US20090229063A1 - Toothbrush - Google Patents
Toothbrush Download PDFInfo
- Publication number
- US20090229063A1 US20090229063A1 US12/305,673 US30567307A US2009229063A1 US 20090229063 A1 US20090229063 A1 US 20090229063A1 US 30567307 A US30567307 A US 30567307A US 2009229063 A1 US2009229063 A1 US 2009229063A1
- Authority
- US
- United States
- Prior art keywords
- oral hygiene
- flavouring substance
- hygiene implement
- thermoplastic elastomer
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000463 material Substances 0.000 claims abstract description 54
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 31
- 239000000126 substance Substances 0.000 claims abstract description 23
- NOOLISFMXDJSKH-UTLUCORTSA-N (+)-Neomenthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@@H]1O NOOLISFMXDJSKH-UTLUCORTSA-N 0.000 claims abstract description 19
- 239000004014 plasticizer Substances 0.000 claims abstract description 16
- NOOLISFMXDJSKH-UHFFFAOYSA-N DL-menthol Natural products CC(C)C1CCC(C)CC1O NOOLISFMXDJSKH-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229940041616 menthol Drugs 0.000 claims abstract description 15
- 241000907903 Shorea Species 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 24
- 235000019198 oils Nutrition 0.000 claims description 24
- 229920003023 plastic Polymers 0.000 claims description 16
- 239000004033 plastic Substances 0.000 claims description 16
- -1 menthyl acetate Chemical class 0.000 claims description 14
- 230000004888 barrier function Effects 0.000 claims description 12
- 239000001525 mentha piperita l. herb oil Substances 0.000 claims description 11
- 238000004806 packaging method and process Methods 0.000 claims description 11
- 235000019477 peppermint oil Nutrition 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 150000002148 esters Chemical class 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- YGWKXXYGDYYFJU-SSDOTTSWSA-N (+)-menthofuran Chemical compound C1[C@H](C)CCC2=C1OC=C2C YGWKXXYGDYYFJU-SSDOTTSWSA-N 0.000 claims description 6
- 239000001745 (6R)-3,6-dimethyl-4,5,6,7-tetrahydro-1-benzofuran Substances 0.000 claims description 6
- YGWKXXYGDYYFJU-UHFFFAOYSA-N Menthofuran Natural products C1C(C)CCC2=C1OC=C2C YGWKXXYGDYYFJU-UHFFFAOYSA-N 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- NFLGAXVYCFJBMK-RKDXNWHRSA-N (+)-isomenthone Natural products CC(C)[C@H]1CC[C@@H](C)CC1=O NFLGAXVYCFJBMK-RKDXNWHRSA-N 0.000 claims description 5
- NFLGAXVYCFJBMK-UHFFFAOYSA-N Menthone Chemical compound CC(C)C1CCC(C)CC1=O NFLGAXVYCFJBMK-UHFFFAOYSA-N 0.000 claims description 5
- 229930007503 menthone Natural products 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 239000000049 pigment Substances 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- XHXUANMFYXWVNG-ADEWGFFLSA-N (-)-Menthyl acetate Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@H]1OC(C)=O XHXUANMFYXWVNG-ADEWGFFLSA-N 0.000 claims description 4
- 239000001605 (5-methyl-2-propan-2-ylcyclohexyl) acetate Substances 0.000 claims description 2
- XHXUANMFYXWVNG-UHFFFAOYSA-N D-menthyl acetate Natural products CC(C)C1CCC(C)CC1OC(C)=O XHXUANMFYXWVNG-UHFFFAOYSA-N 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical class CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 239000005030 aluminium foil Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000000796 flavoring agent Substances 0.000 description 4
- 235000019634 flavors Nutrition 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- NZGWDASTMWDZIW-MRVPVSSYSA-N (+)-pulegone Chemical compound C[C@@H]1CCC(=C(C)C)C(=O)C1 NZGWDASTMWDZIW-MRVPVSSYSA-N 0.000 description 2
- 206010006326 Breath odour Diseases 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229920006132 styrene block copolymer Polymers 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229940076292 aquafresh Drugs 0.000 description 1
- 239000001055 blue pigment Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
- A46B15/0081—Brushes with a scraper, e.g. tongue scraper
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
- A46B9/04—Arranged like in or for toothbrushes
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
- A46D1/006—Antimicrobial, disinfectant bristles, handle, bristle-carrier or packaging
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
Definitions
- This invention relates to oral hygiene devices.
- the invention relates to toothbrushes of the type which incorporate elastomeric lamellae on the surface of their head opposite to the surface from which bristles project.
- lamellae are provided primarily for the purposes of tongue cleaning, i.e. for gently removing deposits which might cause bad breath from the tongue.
- Toothbrushes of this type are known, see for example GB-A-2 391 462 which discloses a toothbrush having a head with bristles extending from one surface of its head, and thermoplastic elastomeric lamellae extending from the opposite surface, and these elastomeric lamellae may incorporate a flavour.
- a toothbrush though not incorporating a flavour into its elastomeric lamellae, is sold by the present applicant for example under the trade mark Dr.BESTTM Duo Protekt.
- an oral hygiene implement having at least one elastomeric oral hygiene element made of a thermoplastic elastomer material having a hardness in the range ShoreA 20-50 and a composition comprising 100-200 parts of a thermoplastic elastomer base material and 10-100 parts of a plasticiser comprising a mixture of a plasticising oil and a lipophilic flavouring substance which comprises menthol and/or derivatives thereof, the lipophilic flavouring substance being 5-15 wt % of the mixture.
- An improvement provided by the invention is the enhanced oral experience provided by the pleasant flavour resulting from the presence of the lipophilic flavouring substance.
- the oral hygiene implement preferably comprises a plastics material handle part upon which the one or more oral hygiene element is mounted.
- Suitable plastics materials include the plastics materials from which toothbrushes are made, typically polypropylene.
- the oral hygiene implement is preferably a toothbrush comprising a grip handle and an integral or replaceable head with bristles extending from one surface of its head.
- the at least one elastomeric oral hygiene element comprises thermoplastic elastomeric lamellae extending from the opposite surface of the head.
- lamellae may be of a known shape.
- lamellae may be in the form of strips having a length direction perpendicular to the head-handle length direction of the toothbrush, a width direction perpendicular to the said opposite surface, and a thickness direction parallel to said head-handle direction.
- a typical form of such lamellae is those of the known Dr.BESTTM Duo Protekt toothbrush.
- the oral hygiene implement may be a tongue cleaning device other than a toothbrush.
- a tongue cleaning device other than a toothbrush.
- An example of such a device is for example disclosed in PCT/EP06/000181 and DE-G-202 005 004291.9, relating to the “Zitch Rlick” tongue cleaning device sold under the “DrBESTTM” trade mark.
- Thermoplastic elastomer materials are well known materials which combine the characteristics of both thermoplastics on the one hand and elastomers on the other.
- Numerous types of thermoplastic elastomer base material are known for use in the oral hygiene implement of this invention, for example styrene block copolymers.
- a suitable base material is that which is used as the base thermoplastic elastomer material used for the tongue-cleaning lamellae of the AQUAFRESH DUO CLEANTM toothbrush marketed by the present applicant.
- Examples of such materials are he Thermolast KTM family of thermoplastic elastomer materials available from the supplier Kunststoffwerk Kraiburg GmbH & Co. KG, Germany, for example the material TF 3 AAH. These are based on hydrogenated styrene block copolymers.
- thermoplastic elastomer material preferably has a hardness in the range ShoreA 30+/ ⁇ 3.
- the thermoplastic elastomer material contains 20-80 parts of the plasticiser.
- the composition range of the plasticiser i.e. 5-15 wt % of the lipophilic flavouring substance in the plasticiser mixture appears to be important in optimising the taste perceived by the user of the oral hygiene implement of this invention.
- a preferred proportion is 10+/ ⁇ 2%. For example it is typically found that if less than 5% is used little benefit in taste may be experienced, and if more than 15% is used the taste may be undesirable.
- plasticising oil used herein is intended to encompass all oils which are capable of plasticising the thermoplastic elastomer material.
- oil as used herein is intended to encompass all organic liquids having a plasticising function, including paraffinic, hydrocarbon and ester-based oils. The viscosity of such oils may vary between a mobile liquid and a wax.
- a suitable plasticising oil is so called medical white oil.
- Medical white oil is a known plasticising oil for thermoplastic elastomer materials and is preferred.
- a medical white oil comprises a highly refined mineral oil conforming to the quality requirements of the British and US Pharmacopoeias.
- oils comply with the quality requirements of “Mineral Hydrocarbons in Food Regulations” 1996; (S.I.No. 1073), and United States F & D. A Regulations No. 178.3620(a) and 172.878.
- oils have the following properties:
- the lipophilic flavouring substance comprises 70 weight % or more, preferably 80 weight % or more of menthol and/or derivatives thereof.
- the derivative For use in the head of a toothbrush the derivative must be of a non-toxic orally acceptable type. Many such non-toxic orally acceptable compounds derived from the menthol nucleus are known. Suitable derivatives may include esters of menthol, e.g. C 1-5 alkanoic acid esters, ether and ketone derivatives in which the hydroxyl group of the menthol nucleus is replaced by a carbonyl moiety or is cyclised into an ether, e.g. furan, moiety.
- the lipophilic flavouring substance comprises 40-60 weight % of menthol, preferably in mixture with 20-35 weight % of menthone, preferably in mixture with 5-8 weight % of one or more menthyl ester, particularly menthyl acetate, preferably in mixture with 1-5 weight & of menthofuran.
- menthol preferably in mixture with 20-35 weight % of menthone, preferably in mixture with 5-8 weight % of one or more menthyl ester, particularly menthyl acetate, preferably in mixture with 1-5 weight & of menthofuran.
- Menthofuran is an example of such a substance.
- Peppermint Oil generally comprises the composition:
- the menthofuran is the (R)-(+)-isomer.
- a further constituent of peppermint oil is the menthol derivative (R)-(+)-pulegone.
- flavour of menthol and menthol derivatives also conveys a feeling of oral freshness, and can assist in overcoming any problem of bad breath.
- the lipophilic flavouring substance may be admixed with the plasticising oil to form the plasticiser, and the mixture then blended with the thermoplastic elastomer.
- the lipophilic flavouring substance and the plasticising oil may be blended separately with the thermoplastic elastomer.
- the oral hygiene implement with its oral hygiene element may be made according to any of the known processes for making such an implement.
- a typical manufacturing process comprises co-moulding of the implement from a plastics material and the thermoplastic elastomer material.
- the thermoplastic elastomer material defined above for use in the invention may be co-moulded by a moulding process analogous to that used for conventional materials.
- An example of such a co-moulding process is disclosed in WO-A-2005/084487.
- the present invention therefore provides a process for making an oral hygiene implement comprising a plastics material handle part and an oral hygiene element, comprising co-moulding the plastics material handle part and an oral hygiene element made of a thermoplastic elastomer material having a hardness in the range ShoreA 20-50 and a composition comprising 100-200 parts of the thermoplastic elastomer base material and 10-100 parts of a plasticiser comprising a mixture of a plasticising oil and a lipophilic flavouring substance which comprises menthol and/or derivatives thereof, the lipophilic flavouring substance being 5-15 wt % of the mixture.
- the process may be otherwise generally conventional.
- a process comprises firstly making a plastics material part of the toothbrush in a first injection mould, then enclosing the so-made plastics material part in a second injection mould having a mould cavity which defines the shape of the elastomeric oral hygiene element, then injecting the thermoplastic elastomer material into the second mould under conditions which achieve a bond between the plastics material and the thermoplastic elastomer.
- Typical plastics materials are known in the art of toothbrush manufacture, e.g. the plastics materials from which the plastics material parts of the Dr.BESTTM Duo Protekt toothbrush is made and include polypropylene.
- the oral hygiene implement of this invention is preferably provided for sale in some suitable packaging, e.g. blister packaging. It has been found that some lipophilic flavouring substances, particularly those including menthol, can adversely affect pigments used on packaging, especially blue pigments, and the invention further addresses this problem.
- a package comprising a packaging layer having a surface on which is printed matter incorporating a pigment, and this printed matter is covered by a barrier layer comprising at least one layer each of polyvinyl alcohol and polyethylene, the barrier layer being situated between the printed matter and the oral hygiene implement.
- a product comprising an oral hygiene implement as defined above, enclosed within a package comprising a packaging layer having a surface on which is printed matter incorporating a pigment, this printed matter is covered by a barrier layer comprising at least one layer each of polyvinyl alcohol and polyethylene, and this barrier layer is situated between the printed material and the oral hygiene element.
- the packaging layer may comprise a cardboard-aluminium foil laminate, with the printed matter printed on the surface of the aluminium foil layer.
- the barrier layer comprises two layers of polyethylene sandwiching a layer of polyvinyl alcohol intermediate between these two layers.
- FIG. 1 shows an overall side view of an oral hygiene device of this invention, being a toothbrush.
- FIG. 2 shows an overall side view of a package for the oral hygiene device of FIG. 1 .
- FIG. 3 shows an enlarged cross section of the construction of part of the package of FIG. 2
- an oral hygiene implement 1 overall is shown, being a toothbrush, comprising a grip handle 2 and an integral head 3 with bristles 4 extending from one surface 5 of its head 3 .
- the handle 2 and head 3 are made of a known polypropylene material, e.g. Moplen EP 548 TTM used in toothbrush manufacture.
- Elastomeric oral hygiene elements 6 are provided on head 3 , being thermoplastic elastomeric lamellae extending from the opposite surface 7 of the head 3 from which the bristles 4 extend.
- the lamellae 6 are identical in construction to those of the known Dr.BESTTM Duo Protekt toothbrush, i.e. extending ca. 2 mm from the surface 7 , and about 1 mm wide at their base where they meet the surface 7 .
- the lamellae 6 are formed integrally in one piece with a covering 8 of elastomer over the head 3 .
- the lamellae 6 and covering 8 are made of a thermoplastic elastomer material having a hardness of ShoreA 30 comprising 100-200 parts of a thermoplastic elastomer base material, for example Thermolast KTM TF 3AAH, and 10-100 parts of plasticiser.
- thermoplastic elastomer materials comprising respectively 120 parts of the thermoplastic elastomer base material and 20 parts of the plasticiser; and 200 parts of the thermoplastic elastomer base material and 100 parts of the plasticiser were used.
- the plasticiser comprises a mixture of Medical white oil complying with the quality requirements of “Mineral Hydrocarbons in Food Regulations” 1996; (S.I.No. 1073), and United States F & D. A Regulations No. 178.3620(a) and 172.878, with the following properties:
- the peppermint oil amounts to 10 weight % of the white medical oil-peppermint oil mixture.
- the plastics material part of the toothbrush i.e. the handle 2 and head 3 were made by a conventional injection moulding process. This plastics material part was then enclosed in an injection mould (not shown) having a mould cavity (not shown) defining the shape of the lamellae 6 , and thermoplastic elastomer material of this composition was injection moulded to form the lamellae 6 .
- the procedure was exactly the same way as the known elastomer material compositions which use the same white medical oil without the peppermint oil as plasticiser, i.e. in the same way as the lamellae of the known Dr.BESTTM Duo Protekt toothbrush.
- a package 10 overall suitable for a toothbrush 1 above is shown.
- This package comprises a polyethylene terephthalate blister 11 being 250 microns thick defining a typical blister cavity 12 suitable to enclose the toothbrush 1 .
- the blister cavity 12 is closed by a packaging layer 13 , which comprises a cardboard 13 A-aluminium foil 13 B laminate, with the printed matter 14 printed on the surface of the aluminium foil layer 13 B.
- This packaging layer 13 is typically 300-400 microns thick, for example ca. 350 microns thick.
- This printed matter 14 is covered by a barrier layer 15 comprising two layers 15 A, 15 B of polyethylene sandwiching a layer of polyvinyl alcohol 15 C intermediate between these two layers 15 A, 15 B.
- the barrier layer 15 is typically 40-60 microns thick, typically ca. 50 microns thick.
Abstract
An oral hygiene implement, typically a toothbrush, having an oral hygiene element made of a thermoplastic elastomer material having a hardness in the range ShoreA 20-50 and a composition comprising 100-200 parts of a thermoplastic elastomer base material and 10-100 parts of a plasticiser comprising a mixture of a plasticising oil and a lipophilic flavouring substance which comprises menthol and/or derivatives thereof, the lipophilic flavouring substance being 5-15 wt % of the mixture.
Description
- This invention relates to oral hygiene devices.
- In particular the invention relates to toothbrushes of the type which incorporate elastomeric lamellae on the surface of their head opposite to the surface from which bristles project. Such lamellae are provided primarily for the purposes of tongue cleaning, i.e. for gently removing deposits which might cause bad breath from the tongue.
- Toothbrushes of this type are known, see for example GB-A-2 391 462 which discloses a toothbrush having a head with bristles extending from one surface of its head, and thermoplastic elastomeric lamellae extending from the opposite surface, and these elastomeric lamellae may incorporate a flavour. Such a toothbrush, though not incorporating a flavour into its elastomeric lamellae, is sold by the present applicant for example under the trade mark Dr.BEST™ Duo Protekt.
- There remains an ongoing need to provide improved forms of such toothbrushes, and it is an objective of this invention to provide such an improvement.
- According to this invention an oral hygiene implement is provided, having at least one elastomeric oral hygiene element made of a thermoplastic elastomer material having a hardness in the range ShoreA 20-50 and a composition comprising 100-200 parts of a thermoplastic elastomer base material and 10-100 parts of a plasticiser comprising a mixture of a plasticising oil and a lipophilic flavouring substance which comprises menthol and/or derivatives thereof, the lipophilic flavouring substance being 5-15 wt % of the mixture.
- An improvement provided by the invention is the enhanced oral experience provided by the pleasant flavour resulting from the presence of the lipophilic flavouring substance.
- The oral hygiene implement preferably comprises a plastics material handle part upon which the one or more oral hygiene element is mounted. Suitable plastics materials include the plastics materials from which toothbrushes are made, typically polypropylene.
- The oral hygiene implement is preferably a toothbrush comprising a grip handle and an integral or replaceable head with bristles extending from one surface of its head. Preferably the at least one elastomeric oral hygiene element comprises thermoplastic elastomeric lamellae extending from the opposite surface of the head. Such lamellae may be of a known shape. For example such lamellae may be in the form of strips having a length direction perpendicular to the head-handle length direction of the toothbrush, a width direction perpendicular to the said opposite surface, and a thickness direction parallel to said head-handle direction. A typical form of such lamellae is those of the known Dr.BEST™ Duo Protekt toothbrush.
- Alternatively the oral hygiene implement may be a tongue cleaning device other than a toothbrush. An example of such a device is for example disclosed in PCT/EP06/000181 and DE-G-202 005 004291.9, relating to the “Zungen Reiniger” tongue cleaning device sold under the “DrBEST™” trade mark.
- Thermoplastic elastomer materials are well known materials which combine the characteristics of both thermoplastics on the one hand and elastomers on the other. Numerous types of thermoplastic elastomer base material are known for use in the oral hygiene implement of this invention, for example styrene block copolymers. A suitable base material is that which is used as the base thermoplastic elastomer material used for the tongue-cleaning lamellae of the AQUAFRESH DUO CLEAN™ toothbrush marketed by the present applicant. Examples of such materials are he Thermolast K™ family of thermoplastic elastomer materials available from the supplier Gummiwerk Kraiburg GmbH & Co. KG, Germany, for example the material TF 3 AAH. These are based on hydrogenated styrene block copolymers.
- The thermoplastic elastomer material preferably has a hardness in the range ShoreA 30+/−3.
- Preferably the thermoplastic elastomer material contains 20-80 parts of the plasticiser. The composition range of the plasticiser, i.e. 5-15 wt % of the lipophilic flavouring substance in the plasticiser mixture appears to be important in optimising the taste perceived by the user of the oral hygiene implement of this invention. A preferred proportion is 10+/−2%. For example it is typically found that if less than 5% is used little benefit in taste may be experienced, and if more than 15% is used the taste may be undesirable.
- The term “plasticising oil” used herein is intended to encompass all oils which are capable of plasticising the thermoplastic elastomer material. The term “oil” as used herein is intended to encompass all organic liquids having a plasticising function, including paraffinic, hydrocarbon and ester-based oils. The viscosity of such oils may vary between a mobile liquid and a wax. For use in the head of a toothbrush the oil must be of a non-toxic orally acceptable type, and a suitable plasticising oil is so called medical white oil. Medical white oil is a known plasticising oil for thermoplastic elastomer materials and is preferred. Typically a medical white oil comprises a highly refined mineral oil conforming to the quality requirements of the British and US Pharmacopoeias. Typically such oils comply with the quality requirements of “Mineral Hydrocarbons in Food Regulations” 1996; (S.I.No. 1073), and United States F & D. A Regulations No. 178.3620(a) and 172.878. Typically such oils have the following properties:
-
ISO 15 ISO 68 Relative Density @ 60° F. 0.850 0.880 Viscosity @ 20° C. (cS) 25.0 235 Viscosity @ 40° C. (cS) 15.0 69.0 - Suitably the lipophilic flavouring substance comprises 70 weight % or more, preferably 80 weight % or more of menthol and/or derivatives thereof. For use in the head of a toothbrush the derivative must be of a non-toxic orally acceptable type. Many such non-toxic orally acceptable compounds derived from the menthol nucleus are known. Suitable derivatives may include esters of menthol, e.g. C1-5 alkanoic acid esters, ether and ketone derivatives in which the hydroxyl group of the menthol nucleus is replaced by a carbonyl moiety or is cyclised into an ether, e.g. furan, moiety. Preferably the lipophilic flavouring substance comprises 40-60 weight % of menthol, preferably in mixture with 20-35 weight % of menthone, preferably in mixture with 5-8 weight % of one or more menthyl ester, particularly menthyl acetate, preferably in mixture with 1-5 weight & of menthofuran. An example of such a substance is Peppermint Oil. Peppermint oil generally comprises the composition:
-
Minimum Maximum Total menthol 52 wt. % 56 wt. % Menthone 22 wt. % 30 wt. % Menthyl esters 5.8 wt. % 7.8 wt. % Menthofuran 1.7 wt. % 3.7 wt. % - Typically in peppermint oil the menthofuran is the (R)-(+)-isomer. A further constituent of peppermint oil is the menthol derivative (R)-(+)-pulegone.
- In addition to being pleasant, the flavour of menthol and menthol derivatives also conveys a feeling of oral freshness, and can assist in overcoming any problem of bad breath.
- The lipophilic flavouring substance may be admixed with the plasticising oil to form the plasticiser, and the mixture then blended with the thermoplastic elastomer. Alternatively the lipophilic flavouring substance and the plasticising oil may be blended separately with the thermoplastic elastomer.
- The oral hygiene implement with its oral hygiene element may be made according to any of the known processes for making such an implement. A typical manufacturing process comprises co-moulding of the implement from a plastics material and the thermoplastic elastomer material. In such a process the thermoplastic elastomer material defined above for use in the invention may be co-moulded by a moulding process analogous to that used for conventional materials. An example of such a co-moulding process is disclosed in WO-A-2005/084487.
- In a further aspect the present invention therefore provides a process for making an oral hygiene implement comprising a plastics material handle part and an oral hygiene element, comprising co-moulding the plastics material handle part and an oral hygiene element made of a thermoplastic elastomer material having a hardness in the range ShoreA 20-50 and a composition comprising 100-200 parts of the thermoplastic elastomer base material and 10-100 parts of a plasticiser comprising a mixture of a plasticising oil and a lipophilic flavouring substance which comprises menthol and/or derivatives thereof, the lipophilic flavouring substance being 5-15 wt % of the mixture.
- The process may be otherwise generally conventional. Typically such a process comprises firstly making a plastics material part of the toothbrush in a first injection mould, then enclosing the so-made plastics material part in a second injection mould having a mould cavity which defines the shape of the elastomeric oral hygiene element, then injecting the thermoplastic elastomer material into the second mould under conditions which achieve a bond between the plastics material and the thermoplastic elastomer. Typical plastics materials are known in the art of toothbrush manufacture, e.g. the plastics materials from which the plastics material parts of the Dr.BEST™ Duo Protekt toothbrush is made and include polypropylene.
- The oral hygiene implement of this invention is preferably provided for sale in some suitable packaging, e.g. blister packaging. It has been found that some lipophilic flavouring substances, particularly those including menthol, can adversely affect pigments used on packaging, especially blue pigments, and the invention further addresses this problem.
- This problem is addressed by a package comprising a packaging layer having a surface on which is printed matter incorporating a pigment, and this printed matter is covered by a barrier layer comprising at least one layer each of polyvinyl alcohol and polyethylene, the barrier layer being situated between the printed matter and the oral hygiene implement.
- Further there is provided a product comprising an oral hygiene implement as defined above, enclosed within a package comprising a packaging layer having a surface on which is printed matter incorporating a pigment, this printed matter is covered by a barrier layer comprising at least one layer each of polyvinyl alcohol and polyethylene, and this barrier layer is situated between the printed material and the oral hygiene element.
- It is found that the interposition of such a barrier layer between the oral hygiene element and the printed matter helps to prevent adverse effects of the flavouring on typical pigments used in printed matter on packaging.
- Suitably the packaging layer may comprise a cardboard-aluminium foil laminate, with the printed matter printed on the surface of the aluminium foil layer. Preferably the barrier layer comprises two layers of polyethylene sandwiching a layer of polyvinyl alcohol intermediate between these two layers.
- The present invention will now be illustrated by way of example only with reference to the accompanying drawings.
-
FIG. 1 shows an overall side view of an oral hygiene device of this invention, being a toothbrush. -
FIG. 2 shows an overall side view of a package for the oral hygiene device ofFIG. 1 . -
FIG. 3 shows an enlarged cross section of the construction of part of the package ofFIG. 2 - Referring to
FIG. 1 an oral hygiene implement 1 overall is shown, being a toothbrush, comprising agrip handle 2 and an integral head 3 withbristles 4 extending from onesurface 5 of its head 3. Thehandle 2 and head 3 are made of a known polypropylene material, e.g. Moplen EP 548 T™ used in toothbrush manufacture. - Elastomeric
oral hygiene elements 6 are provided on head 3, being thermoplastic elastomeric lamellae extending from theopposite surface 7 of the head 3 from which thebristles 4 extend. Thelamellae 6 are identical in construction to those of the known Dr.BEST™ Duo Protekt toothbrush, i.e. extending ca. 2 mm from thesurface 7, and about 1 mm wide at their base where they meet thesurface 7. Thelamellae 6 are formed integrally in one piece with acovering 8 of elastomer over the head 3. - The
lamellae 6 and covering 8 are made of a thermoplastic elastomer material having a hardness of ShoreA 30 comprising 100-200 parts of a thermoplastic elastomer base material, for example Thermolast K™ TF 3AAH, and 10-100 parts of plasticiser. Specifically thermoplastic elastomer materials comprising respectively 120 parts of the thermoplastic elastomer base material and 20 parts of the plasticiser; and 200 parts of the thermoplastic elastomer base material and 100 parts of the plasticiser were used. - In each of these compositions of the thermoplastic elastomer material the plasticiser comprises a mixture of Medical white oil complying with the quality requirements of “Mineral Hydrocarbons in Food Regulations” 1996; (S.I.No. 1073), and United States F & D. A Regulations No. 178.3620(a) and 172.878, with the following properties:
-
ISO 15ISO 68 Relative Density @ 60° F. 0.850 0.880 Viscosity @ 20° C. (cS) 25.0 235 Viscosity @ 40° C. (cS) 15.0 69.0
This oil is mixed with peppermint oil of a composition: -
Minimum Maximum Total menthol 52 wt. % 56 wt. % Menthone 22 wt. % 30 wt. % Menthyl esters 5.8 wt. % 7.8 wt. % Menthofuran 1.7 wt. % 3.7 wt. % - In the mixture the peppermint oil amounts to 10 weight % of the white medical oil-peppermint oil mixture.
- The plastics material part of the toothbrush, i.e. the
handle 2 and head 3 were made by a conventional injection moulding process. This plastics material part was then enclosed in an injection mould (not shown) having a mould cavity (not shown) defining the shape of thelamellae 6, and thermoplastic elastomer material of this composition was injection moulded to form thelamellae 6. The procedure was exactly the same way as the known elastomer material compositions which use the same white medical oil without the peppermint oil as plasticiser, i.e. in the same way as the lamellae of the known Dr.BEST™ Duo Protekt toothbrush. This is advantageous in enabling a 1:1 replacement of the known thermoplastic elastomer material of the Dr.BEST™ Duo Protekt toothbrush with the peppermint oil containing material described above. The proportion of 10 weight % peppermint oil in the plasticiser is found to be optimal in achieving a taste that is satisfactory to consumers. - Referring to
FIGS. 2 and 3 apackage 10 overall suitable for atoothbrush 1 above is shown. This package comprises apolyethylene terephthalate blister 11 being 250 microns thick defining atypical blister cavity 12 suitable to enclose thetoothbrush 1. Theblister cavity 12 is closed by apackaging layer 13, which comprises acardboard 13A-aluminium foil 13B laminate, with the printedmatter 14 printed on the surface of thealuminium foil layer 13B. Thispackaging layer 13 is typically 300-400 microns thick, for example ca. 350 microns thick. This printedmatter 14 is covered by abarrier layer 15 comprising twolayers polyvinyl alcohol 15C intermediate between these twolayers barrier layer 15 is typically 40-60 microns thick, typically ca. 50 microns thick.
Claims (12)
1. An oral hygiene implement, having at least one elastomeric oral hygiene element made of a thermoplastic elastomer material having a hardness in the range ShoreA 20-50 and a composition comprising 100-200 parts of a thermoplastic elastomer base material and 10-100 parts of a plasticiser comprising a mixture of a plasticising oil and a lipophilic flavouring substance which comprises menthol and/or derivatives thereof, the lipophilic flavouring substance being 5-15 wt % of the mixture.
2. An oral hygiene implement according to claim 1 being a toothbrush comprising a grip handle and an integral or replaceable head with bristles extending from one surface of its head, and the at least one elastomeric oral hygiene element comprises thermoplastic elastomeric lamellae extending from the opposite surface of the head.
3. An oral hygiene implement according to claim 1 wherein the plasticizing oil comprises medical white oil.
4. An oral hygiene implement according to claim 1 wherein the lipophilic flavouring substance comprises 10+/−2% of the plasticiser.
5. An oral hygiene implement according to claim 1 wherein the lipophilic flavouring substance comprises 70 weight % or more of menthol and/or one or more derivative thereof.
6. An oral hygiene implement according to claim 5 wherein the lipophilic flavouring substance comprises 40-60 weight % of menthol, in mixture with 20-35 weight % of menthone, 5-8 weight % of one or more menthyl ester particularly menthyl acetate, and 1-5 weight of menthofuran.
7. An oral hygiene implement according to claim 6 wherein the lipophilic flavouring substance comprises the composition:
8. An oral hygiene implement according to claim 1 wherein the lipophilic flavouring substance comprises peppermint oil.
9. A process for making an oral hygiene implement comprising a plastics material handle part and an oral hygiene element, comprising co-moulding the plastics material handle part and an oral hygiene element made of a thermoplastic elastomer material having a hardness in the range ShoreA 20-50 and a composition comprising;
100-200 parts of a thermoplastic elastomer base material and 10-100 parts of a plasticiser comprising a mixture of a plasticising oil and a lipophilic flavouring substance which comprises menthol and/or derivatives thereof, the lipophilic flavouring substance being 5-15 wt % of the mixture.
10. An article comprising an oral hygiene implement according to claim 1 provided in packaging comprising a packaging layer having a surface on which is printed matter incorporating a pigment, and this printed matter is covered by a barrier layer comprising at least one layer each of polyvinyl alcohol and polyethylene, the barrier layer being situated between the printed matter and the oral hygiene implement.
11. An article according to claim 10 wherein the barrier layer comprises two layers of polyethylene sandwiching a layer of polyvinyl alcohol intermediate between these two layers of polyethylene.
12. An article according to claim 10 wherein the barrier layer has a thickness 40-60 microns.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0613135.3 | 2006-06-30 | ||
GBGB0613135.3A GB0613135D0 (en) | 2006-06-30 | 2006-06-30 | Toothbrush |
PCT/EP2007/056498 WO2008000800A1 (en) | 2006-06-30 | 2007-06-28 | Toothbrush |
Publications (1)
Publication Number | Publication Date |
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US20090229063A1 true US20090229063A1 (en) | 2009-09-17 |
Family
ID=36888492
Family Applications (1)
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---|---|---|---|
US12/305,673 Abandoned US20090229063A1 (en) | 2006-06-30 | 2007-06-28 | Toothbrush |
Country Status (16)
Country | Link |
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US (1) | US20090229063A1 (en) |
EP (1) | EP2034868B8 (en) |
JP (1) | JP5374369B2 (en) |
KR (1) | KR101412970B1 (en) |
CN (1) | CN101484042B (en) |
AR (1) | AR061724A1 (en) |
AU (1) | AU2007263701B2 (en) |
BR (1) | BRPI0713073A2 (en) |
CA (1) | CA2654917C (en) |
GB (1) | GB0613135D0 (en) |
MX (1) | MX2009000095A (en) |
MY (1) | MY150714A (en) |
NZ (1) | NZ573529A (en) |
TW (1) | TWI422342B (en) |
WO (1) | WO2008000800A1 (en) |
ZA (1) | ZA200810613B (en) |
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WO2012022464A1 (en) * | 2010-08-16 | 2012-02-23 | Kraiburg Tpe Gmbh & Co. Kg | Process for producing a masterbatch comprising tpe compound and masterbatch |
USD680748S1 (en) | 2010-02-26 | 2013-04-30 | Colgate-Palmolive Company | Oral care implement |
USD690518S1 (en) | 2010-02-26 | 2013-10-01 | Colgate-Palmolive Company | Head portion of an oral care implement |
USD749855S1 (en) | 2013-11-05 | 2016-02-23 | Colgate-Palmolive Company | Oral care implement |
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USD753922S1 (en) | 2013-12-16 | 2016-04-19 | Colgate-Palmolive Company | Toothbrush |
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USD764804S1 (en) | 2013-11-05 | 2016-08-30 | Colgate-Palmolive Company | Oral care implement |
USD765985S1 (en) | 2013-12-16 | 2016-09-13 | Colgate-Palmolive Company | Toothbrush |
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US20160262532A1 (en) * | 2013-11-05 | 2016-09-15 | Colgate-Palmolive Company | Oral care implement |
US9731882B2 (en) | 2011-05-27 | 2017-08-15 | Colgate-Palmolive Company | Oral care kit for displaying a portion of a toothbrush |
US10238204B2 (en) | 2013-11-05 | 2019-03-26 | Colgate-Palmolive Company | Oral care implement |
US10743645B2 (en) | 2013-11-05 | 2020-08-18 | Colgate-Palmolive Company | Oral care implement |
CN114271598A (en) * | 2022-01-04 | 2022-04-05 | 许耿防 | Toothbrush with high-efficiency Bass tooth brushing method and preparation method thereof |
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US8510893B2 (en) * | 2008-06-20 | 2013-08-20 | Colgate-Palmolive Company | Toothbrush with visual and/or other sensory effects |
NZ591593A (en) * | 2008-08-29 | 2013-02-22 | Schulman A Inc | Optimized flavored polymeric compositions |
AU2013205831B2 (en) * | 2008-08-29 | 2015-07-30 | A. Schulman, Inc. | Optimized flavored polymeric compositions |
USD654270S1 (en) | 2009-12-18 | 2012-02-21 | Colgate-Palmolive Company | Toothbrush handle |
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US8549691B2 (en) | 2009-12-18 | 2013-10-08 | Colgate-Palmolive Company | Oral care implement having multi-component handle |
CH703340B1 (en) * | 2010-06-28 | 2014-02-14 | Pb Swiss Tools Gmbh | Hand tool with fragrances. |
BR112013000077A2 (en) * | 2010-06-30 | 2016-05-17 | Braun Gmbh | oral care product packaging |
JP2016112126A (en) * | 2014-12-12 | 2016-06-23 | 株式会社ペッツルート | Toothbrush having flavor |
IT201900011355A1 (en) * | 2019-07-10 | 2021-01-10 | Melo S R L | DEVICE FOR ORAL HYGIENE |
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US20090215476A1 (en) * | 2008-02-27 | 2009-08-27 | Research In Motion Limited | System and method for enabling instant messages to be exchanged between mobile devices |
US8320943B2 (en) * | 2008-02-27 | 2012-11-27 | Research In Motion Limited | System and method for enabling instant messages to be exchanged between mobile devices |
USD680748S1 (en) | 2010-02-26 | 2013-04-30 | Colgate-Palmolive Company | Oral care implement |
USD690518S1 (en) | 2010-02-26 | 2013-10-01 | Colgate-Palmolive Company | Head portion of an oral care implement |
USD692242S1 (en) | 2010-02-26 | 2013-10-29 | Colgate-Palmolive Company | Oral care implement |
USD713151S1 (en) | 2010-02-26 | 2014-09-16 | Colgate-Palmolive Company | Head portion of an oral care implement |
USD848154S1 (en) | 2010-02-26 | 2019-05-14 | Colgate-Palmolive Company | Head portion of an oral care implement |
USD771953S1 (en) | 2010-02-26 | 2016-11-22 | Colgate-Palmolive Company | Head portion of an oral care implement |
WO2012022464A1 (en) * | 2010-08-16 | 2012-02-23 | Kraiburg Tpe Gmbh & Co. Kg | Process for producing a masterbatch comprising tpe compound and masterbatch |
US9731882B2 (en) | 2011-05-27 | 2017-08-15 | Colgate-Palmolive Company | Oral care kit for displaying a portion of a toothbrush |
US20160262532A1 (en) * | 2013-11-05 | 2016-09-15 | Colgate-Palmolive Company | Oral care implement |
USD783290S1 (en) | 2013-11-05 | 2017-04-11 | Colgate-Palmolive Company | Oral care implement |
US10743645B2 (en) | 2013-11-05 | 2020-08-18 | Colgate-Palmolive Company | Oral care implement |
USD764804S1 (en) | 2013-11-05 | 2016-08-30 | Colgate-Palmolive Company | Oral care implement |
USD749855S1 (en) | 2013-11-05 | 2016-02-23 | Colgate-Palmolive Company | Oral care implement |
US10238204B2 (en) | 2013-11-05 | 2019-03-26 | Colgate-Palmolive Company | Oral care implement |
US10039370B2 (en) * | 2013-11-05 | 2018-08-07 | Colgate-Palmolive Company | Oral care implement |
USD751295S1 (en) | 2013-11-05 | 2016-03-15 | Colgate-Palmolive Company | Oral care implement |
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USD753922S1 (en) | 2013-12-16 | 2016-04-19 | Colgate-Palmolive Company | Toothbrush |
USD760499S1 (en) | 2013-12-16 | 2016-07-05 | Colgate-Palmolive Company | Toothbrush |
USD765986S1 (en) | 2013-12-16 | 2016-09-13 | Colgate-Palmolive Company | Toothbrush |
USD765983S1 (en) | 2013-12-16 | 2016-09-13 | Colgate-Palmolive Company | Toothbrush |
USD764175S1 (en) | 2013-12-16 | 2016-08-23 | Colgate-Palmolive Company | Toothbrush |
USD765985S1 (en) | 2013-12-16 | 2016-09-13 | Colgate-Palmolive Company | Toothbrush |
USD764805S1 (en) | 2013-12-16 | 2016-08-30 | Colgate-Palmolive Company | Toothbrush |
CN114271598A (en) * | 2022-01-04 | 2022-04-05 | 许耿防 | Toothbrush with high-efficiency Bass tooth brushing method and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
AR061724A1 (en) | 2008-09-17 |
ZA200810613B (en) | 2010-08-25 |
GB0613135D0 (en) | 2006-08-09 |
MY150714A (en) | 2014-02-28 |
CA2654917C (en) | 2015-02-10 |
KR20090023646A (en) | 2009-03-05 |
JP2009540990A (en) | 2009-11-26 |
JP5374369B2 (en) | 2013-12-25 |
TW200812525A (en) | 2008-03-16 |
CN101484042A (en) | 2009-07-15 |
NZ573529A (en) | 2012-01-12 |
EP2034868B8 (en) | 2017-04-19 |
BRPI0713073A2 (en) | 2012-07-17 |
TWI422342B (en) | 2014-01-11 |
KR101412970B1 (en) | 2014-06-27 |
AU2007263701B2 (en) | 2012-07-12 |
EP2034868B1 (en) | 2017-03-01 |
MX2009000095A (en) | 2009-01-26 |
WO2008000800A1 (en) | 2008-01-03 |
CA2654917A1 (en) | 2008-01-03 |
EP2034868A1 (en) | 2009-03-18 |
CN101484042B (en) | 2011-11-23 |
AU2007263701A1 (en) | 2008-01-03 |
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Legal Events
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AS | Assignment |
Owner name: GLAXOSMITHKLINE CONSUMER HEALTHCARE GMBH & CO KG, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MERL, JOSEF;MUELLER, WOLF-DIETER;REEL/FRAME:029370/0131 Effective date: 20070918 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION |