WO2011025810A1 - Environmentally friendly toothbrush - Google Patents

Environmentally friendly toothbrush Download PDF

Info

Publication number
WO2011025810A1
WO2011025810A1 PCT/US2010/046602 US2010046602W WO2011025810A1 WO 2011025810 A1 WO2011025810 A1 WO 2011025810A1 US 2010046602 W US2010046602 W US 2010046602W WO 2011025810 A1 WO2011025810 A1 WO 2011025810A1
Authority
WO
WIPO (PCT)
Prior art keywords
cornstarch
psm
polypropylene
weight ratio
toothbrush
Prior art date
Application number
PCT/US2010/046602
Other languages
French (fr)
Inventor
Nancy Mantell
Steven Zaken
Richard Wagoner
Original Assignee
Gmz Associates, Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gmz Associates, Ltd filed Critical Gmz Associates, Ltd
Priority to US13/576,329 priority Critical patent/US20130198986A1/en
Publication of WO2011025810A1 publication Critical patent/WO2011025810A1/en

Links

Classifications

    • 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
    • A46D1/02—Bristles details
    • A46D1/0215—Bristles characterised by the material being biodegradable
    • 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

  • toothbrushes have a negative impact on the environment. For example, more than 50,000,000 pounds of toothbrushes pile up in landfills in this country annually. On an individual basis, a person who lives to be 80 years of age and follows his dentist's advice to change toothbrushes every three months, which is also the interval recommended by the American Dental Association, will use more than 300 brushes in his lifetime.
  • Plant-derived biodegradable polymers are a renewable resource and an environmentally friendly alternative to traditional plastic.
  • recycled materials helps to protect our natural resources, such as oil, water, coal, and natural gas.
  • Using recycled polypropylene also means a reduction in the emission of greenhouse gasses.
  • the combined ingredients used in the making of the Ecosafe Toothbrush contribute to the zero waste movement by reducing the quantity of material in our landfills.
  • This invention provides a toothbrush comprising a solid handle and bristled filaments operably affixed thereto, wherein the solid handle is made of a composition of matter comprising an admixture of biodegradable
  • cornstarch (PSM) and recycled polypropylene the weight ratio of cornstarch (PSM) to recycled polypropylene being from 50:50 to 80:20.
  • This invention also provides a method for making a solid, environmentally friendly composition of matter suitable for use as a toothbrush handle comprising the step of admixing biodegradable cornstarch (PSM) and recycled polypropylene under suitable conditions, wherein the weight ratio of cornstarch (PSM) to polypropylene is from 50:50 to 80:20.
  • PSM biodegradable cornstarch
  • a non-disposable toothbrush can be constructed using environmentally friendly material such that the handle retains the physical features desirable in a toothbrush.
  • toothbrushes are made entirely of recycled material and/or material from a renewable source that can be completely recycled. When the toothbrush has completed its usable lifecycle, it can be returned to the manufacturer or seller, where the components can then be separated and recycled.
  • this invention provides a toothbrush comprising a solid handle and bristled filaments (also referred to simply as "bristles”) operably affixed thereto, wherein the solid handle is made of an
  • composition of matter comprising an admixture of biodegradable cornstarch (PSM)
  • PSM biodegradable cornstarch
  • the solid handle may optionally contain additional components such as coloring agents (ideally added at the mixing stage) and texture-enhancing agents. Preferably all coloring and other agents are biodegradable.
  • This handle made from the cornstarch (PSM) /recycled polypropylene composition biodegrades to a more thorough extent than would a handle made only from polypropylene.
  • the bristles are affixed so that there are eight pounds of pull per bristle.
  • the weight ratio of cornstarch (PSM) to recycled polypropylene is from 50:50 to 75:25, Preferably, the weight ratio of cornstarch (PSM) to recycled polypropylene is 65:35.
  • the solid handle is made of an environmentally friendly composition of matter consisting of an admixture of biodegradable cornstarch (PSM) and recycled polypropylene (and optionally a coloring agent) , the weight ratio of cornstarch (PSM) to polypropylene being from 50:50 to 80:20. In a further embodiment, the weight ratio of cornstarch (?SM) to recycled
  • polypropylene is from 50:50 to 75:25, and preferably is 65:35.
  • This invention also provides a method for making a solid, environmentally friendly composition of matter suitable for use as a toothbrush handle comprising the step of admixing biodegradable cornstarch (PSM) and recycled polypropylene under suitable conditions, wherein the weight ratio of cornstarch (PSM) to polypropylene is from 50:50 to 80:20. In one embodiment, the weight ratio of cornstarch (PSM) to recycled polypropylene is from 50:50 to 75:25, and preferably is 65:35.
  • the cornstarch and polypropylene are preferably solid before mixing, and no solvents are required for mixing. It is not necessary for either of the cornstarch and polypropylene to exist at a specified particle size prior to mixing.
  • the mixing apparatus preferably is capable of weighing each component
  • the mixing occurs at a temperature of between 350° F and 4GO 0 F.
  • the mixture is molded in a press that exerts between 200 and 300 tons of pressure.
  • this invention also provides a solid, environmentally friendly composition of matter comprising an admixture of
  • the weight ratio of cornstarch (PSM) to polypropylene is from 50:50 to 80:20.
  • the weight ratio of cornstarch (PSM) -Q polypropylene is from 50:50 to 75:25, and the polypropylene is recycled polypropylene.
  • the weight ratio of cornstarch (PSM) to recycled polypropylene is 65:35.
  • This composition may optionally contain additional components such as coloring agents and texture-enhancing agents (preferably all biodegradable) .
  • this composition consists of an admixture of polypropylene (preferably recycled! and cornstarch (PSM) (and optionally a coloring agent), and the weight ratio of cornstarch (PSM) to polypropylene is preferably 65:35.
  • This invention further provides articles of manufacture (such as consumer products) comprising a solid component, wherein the solid component is an environmentally friendly composition of matter comprising an admixture of biodegradable cornstarch (PSM) and recycled polypropylene, the weighz ratio of cornstarch (PSM) to recycled polypropylene being from 50:50 to 80:20, preferably from 50:50 to 75:25, and most preferably 65:35.
  • PSM biodegradable cornstarch

Abstract

This invention provides a non-disposable, environmentally friendly toothbrush comprising a solid handle and bristled filaments operably affixed thereto, wherein the solid handle is made of an environmentally friendly composition of matter comprising an admixture of cornstarch (PSM) and recycled polypropylene, the weight ratio of biodegradable cornstarch (PSM) to recycled polypropylene being from 50:50 to 80:20.

Description

ENVIRONMENTALLY FRIENDLY TOOTHBRUSH
This application claims the benefit of U.S. Provisional Application No. 61/237,075, filed August 26, 2009, and U.S. Provisional Application No. 61/263,189, filed
November 20, 2009, the contents of both of these
applications being incorporated herein by reference.
Throughout this application, various publications are cited. The disclosure of these publications is hereby incorporated by reference into this application to describe more fully the state of the art to which this invention pertains.
Background of the Invention
Conventional toothbrushes have a negative impact on the environment. For example, more than 50,000,000 pounds of toothbrushes pile up in landfills in this country annually. On an individual basis, a person who lives to be 80 years of age and follows his dentist's advice to change toothbrushes every three months, which is also the interval recommended by the American Dental Association, will use more than 300 brushes in his lifetime.
In addition to excessive landfill use, the use of conventional toothbrushes can lead to (i) damage to the atmosphere upon burning, and (ii) destruction of trees, a significant factor in that a mature tree removes approximately 48 pounds of CO2 from the atmosphere per year.
Plant-derived biodegradable polymers are a renewable resource and an environmentally friendly alternative to traditional plastic.
Our use of recycled materials helps to protect our natural resources, such as oil, water, coal, and natural gas. Using recycled polypropylene also means a reduction in the emission of greenhouse gasses.
The combined ingredients used in the making of the Ecosafe Toothbrush contribute to the zero waste movement by reducing the quantity of material in our landfills.
Summary of the Invention
This invention provides a toothbrush comprising a solid handle and bristled filaments operably affixed thereto, wherein the solid handle is made of a composition of matter comprising an admixture of biodegradable
cornstarch (PSM) and recycled polypropylene, the weight ratio of cornstarch (PSM) to recycled polypropylene being from 50:50 to 80:20.
This invention also provides a method for making a solid, environmentally friendly composition of matter suitable for use as a toothbrush handle comprising the step of admixing biodegradable cornstarch (PSM) and recycled polypropylene under suitable conditions, wherein the weight ratio of cornstarch (PSM) to polypropylene is from 50:50 to 80:20.
Detailed Description of the Invention
In the present invention, it has now been found that a non-disposable toothbrush can be constructed using environmentally friendly material such that the handle retains the physical features desirable in a toothbrush.
The growing environmental burden caused by conventional toothbrush use is directly addressed by the subject invention, namely, an "Eco Safe" environmentally friendly toothbrush. These toothbrushes are made entirely of recycled material and/or material from a renewable source that can be completely recycled. When the toothbrush has completed its usable lifecycle, it can be returned to the manufacturer or seller, where the components can then be separated and recycled.
These toothbrushes made from biodegradable and recycled materials have numerous advantages, such as the
following: (i) the toothbrushes are made with
biodegradable materials, and thus use less landfill space than conventional toothbrushes; (ii) toothbrushes made with recycled materials reuse resources, and thereby limit the need to use virgin raw materials; (iii) the plants from which the toothbrushes are derived actually absorb harmful gases fron the atmosphere, and thus act as a positive influence on the environment, and (iv) these toothbrushes are more than six-times less damaging to the atmosphere when burned than conventional polypropylene- based plastic brushes. Specifically, this invention provides a toothbrush comprising a solid handle and bristled filaments (also referred to simply as "bristles") operably affixed thereto, wherein the solid handle is made of an
environmentally friendly composition of matter comprising an admixture of biodegradable cornstarch (PSM)
(available, for example, from PSM North America) and recycled polypropylene, the weight ratio of cornstarch (PSM) to recycled polypropylene being from 50:50 to 80:20. Although some percentage of the polypropylene used can be non-recycled, it is preferred that the
"recycled polypropylene" be 100% recycled. The solid handle may optionally contain additional components such as coloring agents (ideally added at the mixing stage) and texture-enhancing agents. Preferably all coloring and other agents are biodegradable. This handle made from the cornstarch (PSM) /recycled polypropylene composition biodegrades to a more thorough extent than would a handle made only from polypropylene.
In the preferred embodiment, the bristles are affixed so that there are eight pounds of pull per bristle.
In one embodiment of the subject toothbrush, the weight ratio of cornstarch (PSM) to recycled polypropylene is from 50:50 to 75:25, Preferably, the weight ratio of cornstarch (PSM) to recycled polypropylene is 65:35.
In another embodiment, the solid handle is made of an environmentally friendly composition of matter consisting of an admixture of biodegradable cornstarch (PSM) and recycled polypropylene (and optionally a coloring agent) , the weight ratio of cornstarch (PSM) to polypropylene being from 50:50 to 80:20. In a further embodiment, the weight ratio of cornstarch (?SM) to recycled
polypropylene is from 50:50 to 75:25, and preferably is 65:35.
This invention also provides a method for making a solid, environmentally friendly composition of matter suitable for use as a toothbrush handle comprising the step of admixing biodegradable cornstarch (PSM) and recycled polypropylene under suitable conditions, wherein the weight ratio of cornstarch (PSM) to polypropylene is from 50:50 to 80:20. In one embodiment, the weight ratio of cornstarch (PSM) to recycled polypropylene is from 50:50 to 75:25, and preferably is 65:35.
In this method, the cornstarch and polypropylene are preferably solid before mixing, and no solvents are required for mixing. It is not necessary for either of the cornstarch and polypropylene to exist at a specified particle size prior to mixing. The mixing apparatus preferably is capable of weighing each component
precisely and consistently to ensure product uniformity.
For a short period of time prior to injecting the resulting mixture into a toothbrush handle mold, the mixing occurs at a temperature of between 350° F and 4GO0F. The mixture is molded in a press that exerts between 200 and 300 tons of pressure.
Although the primary commercial embodiment of this invention is an environmentally friendly toothbrush, this invention also provides a solid, environmentally friendly composition of matter comprising an admixture of
biodegradable cornstarch (PSM) and polypropylene
(preferably recycled) , wherein the weight ratio of cornstarch (PSM) to polypropylene is from 50:50 to 80:20. In one embodiment of this composition, the weight ratio of cornstarch (PSM) -Q polypropylene is from 50:50 to 75:25, and the polypropylene is recycled polypropylene. Preferably, the weight ratio of cornstarch (PSM) to recycled polypropylene is 65:35. This composition may optionally contain additional components such as coloring agents and texture-enhancing agents (preferably all biodegradable) .
Alternatively, in another embodiment, this composition consists of an admixture of polypropylene (preferably recycled! and cornstarch (PSM) (and optionally a coloring agent), and the weight ratio of cornstarch (PSM) to polypropylene is preferably 65:35.
This invention further provides articles of manufacture (such as consumer products) comprising a solid component, wherein the solid component is an environmentally friendly composition of matter comprising an admixture of biodegradable cornstarch (PSM) and recycled polypropylene, the weighz ratio of cornstarch (PSM) to recycled polypropylene being from 50:50 to 80:20, preferably from 50:50 to 75:25, and most preferably 65:35.

Claims

What is claimed is:
1. A toothbrush comprising a solid handle and bristled filaments operably affixed thereto, wherein the solid handle is made of a composition of matter comprising an admixture of biodegradable cornstarch (PSM) and recycled polypropylene, the weight ratio of cornstarch (?SM) to recycled polypropylene being from 50:50 to 80:20.
2. The toothbrush of claim 1, wherein the weight ratio of cornstarch (PSM) to recycled polypropylene is from 50:50 to 75:25.
3. The toothbrush of claim 1, wherein the weight ratio of cornstarch (PSM) to recycled polypropylene is 65:35.
4. The toothbrush of claim 1, wherein the solid handle is made of a composition of matter consisting of an admixture of biodegradable cornstarch (PSM) and recycled polypropylene, the weight ratio of cornstarch (PSM) to polypropylene being from 50:50 to 80:20.
5. The toothbrush of claim 4, wherein the weight ratio of cornstarch (PSM) to recycled polypropylene is from 50:50 to 75:25.
6. The toothbrush of claim 4, wherein the weight ratio of cornstarch (PSM) to recycled polypropylene is 65:35.
7. A method for making a solid composition of matter suitable for use as a toothbrush handle comprising the step of admixing biodegradable cornstarch (PSM) and recycled polypropylene under suitable
conditions, wherein the weight ratio of cornstarch (PSM) to polypropylene is from 50:50 to 80:20.
8. The method of claim 7, wherein the weight ratio of cornstarch (PSM) to recycled polypropylene is from 50:50 to 75:25.
9. The method of claim 7, wherein the weight ratio of cornstarch (PSM) to recycled polypropylene is 65:35.
PCT/US2010/046602 2009-08-26 2010-08-25 Environmentally friendly toothbrush WO2011025810A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/576,329 US20130198986A1 (en) 2009-08-26 2010-08-25 Environmentally Friendly Toothbrush

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US23707509P 2009-08-26 2009-08-26
US61/237,075 2009-08-26
US26318909P 2009-11-20 2009-11-20
US61/263,189 2009-11-20

Publications (1)

Publication Number Publication Date
WO2011025810A1 true WO2011025810A1 (en) 2011-03-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/046602 WO2011025810A1 (en) 2009-08-26 2010-08-25 Environmentally friendly toothbrush

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WO (1) WO2011025810A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120272468A1 (en) * 2011-04-26 2012-11-01 The Procter & Gamble Company Oral Care Device Comprising A Synthetic Polymer Derived From A Renewable Resource And Methods Of Producing Said Device
WO2013172834A1 (en) 2012-05-17 2013-11-21 Colgate-Palmolive Company Oral care implement and method of manufacturing an oral care implement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9980557B2 (en) 2012-05-17 2018-05-29 Colgate-Palmolive Company Oral care implement and method of forming an oral care implement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5881425A (en) * 1996-09-03 1999-03-16 Recycline, Inc. Recycled and recyclable toothbrush having bristle and handle configurations for improved oral hygiene
US20080014010A1 (en) * 2004-09-22 2008-01-17 Trisa Holding Ag Brush, In Particular Toothbrush, And Associated Production Method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5881425A (en) * 1996-09-03 1999-03-16 Recycline, Inc. Recycled and recyclable toothbrush having bristle and handle configurations for improved oral hygiene
US20080014010A1 (en) * 2004-09-22 2008-01-17 Trisa Holding Ag Brush, In Particular Toothbrush, And Associated Production Method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SHEN ET AL.: "Product Overview and Market Projection Of Emerging Bio-Based Plastics.", GROUP SCIENCE TECHNOLOGY AND SOCIETY (STS), June 2009 (2009-06-01), UTRECHT UNIVERSITY., pages 1 - 245 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120272468A1 (en) * 2011-04-26 2012-11-01 The Procter & Gamble Company Oral Care Device Comprising A Synthetic Polymer Derived From A Renewable Resource And Methods Of Producing Said Device
WO2013172834A1 (en) 2012-05-17 2013-11-21 Colgate-Palmolive Company Oral care implement and method of manufacturing an oral care implement
CN104284610A (en) * 2012-05-17 2015-01-14 高露洁-棕榄公司 Oral care implement and method of manufacturing oral care implement

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Publication number Publication date
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