WO2011111881A1 - Biodegradable razor handle, method for manufacturing same, and razor including a biodegradable razor handle manufactured by same - Google Patents

Biodegradable razor handle, method for manufacturing same, and razor including a biodegradable razor handle manufactured by same Download PDF

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Publication number
WO2011111881A1
WO2011111881A1 PCT/KR2010/001465 KR2010001465W WO2011111881A1 WO 2011111881 A1 WO2011111881 A1 WO 2011111881A1 KR 2010001465 W KR2010001465 W KR 2010001465W WO 2011111881 A1 WO2011111881 A1 WO 2011111881A1
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WO
WIPO (PCT)
Prior art keywords
biodegradable
acid
aliphatic
razor handle
razor
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PCT/KR2010/001465
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French (fr)
Korean (ko)
Inventor
서병준
심재호
이형민
Original Assignee
주식회사 도루코
주식회사 엔피아이
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Priority to PCT/KR2010/001465 priority Critical patent/WO2011111881A1/en
Publication of WO2011111881A1 publication Critical patent/WO2011111881A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/52—Handles, e.g. tiltable, flexible
    • B26B21/528—Manufacture of razor handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0059—Degradable
    • B29K2995/006—Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/718—Cosmetic equipment, e.g. hair dressing, shaving equipment
    • B29L2031/7186—Shaving equipment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones

Definitions

  • the present invention relates to a polylactic acid-based polymer biodegradable razor handle having excellent heat resistance in a high temperature and high humidity environment, a manufacturing method thereof, and a razor comprising a biodegradable razor handle manufactured thereby.
  • An object of the present invention is to provide a razor which can shave even at high temperatures by rapidly increasing the crystallinity of the razor handle.
  • the present invention provides a biodegradable razor handle comprising polylactide.
  • the present invention provides a razor comprising a cartridge and the biodegradable razor handle.
  • the present invention provides a method for producing a biodegradable razor handle, comprising the steps of preparing a biodegradable razor handle composition comprising polylactide and injecting the biodegradable razor handle composition.
  • an eco-friendly shaver in the manufacture of a portable wet shaver, can be manufactured through the use of polylactic acid having reduced carbon dioxide generation and biodegradability.
  • FIG. 1 is a diagram illustrating heat resistance simulation results of Example and Comparative Example 2.
  • FIG. 1 is a diagram illustrating heat resistance simulation results of Example and Comparative Example 2.
  • FIG. 2 is a view showing an example of a razor to which a biodegradable razor handle according to the present invention is applied.
  • the biodegradable razor handle according to the invention is characterized in that it comprises polylactide.
  • the weight average molecular weight of the polylactide may be 10,000 to 400,000.
  • the weight average molecular weight of the polylactide is preferably 10,000 to 400,000, and the weight average molecular weight of the aliphatic polyester when mixed with polylactic acid is about 10,000 to 500,000, preferably 3 About 10,000-400,000, More preferably, about 50,000-300,000 are suitable, and when copolymerizing with polylactide, the weight average molecular weight of the copolymer is about 10,000-500,000, Preferably it is 30,000-40 About 10,000, More preferably, about 50,000-300,000 are suitable.
  • biodegradable razor handle according to the present invention may further include an aliphatic polyester or an aliphatic-aromatic polyester.
  • the polylactide is included in 60 to 99 parts by weight, and the aliphatic polyester or aliphatic-aromatic polyester is preferably included in 1 to 40 parts by weight.
  • the amount when the amount is added in an amount greater than the range of the addition amount, the dispersibility may be lowered and the cost may increase.
  • Examples of the aliphatic polyesters or aliphatic-aromatic polyesters include polyhydroxycarboxylic acid, hydroxycarboxylic acid or aliphatic polyesters composed of aliphatic polyhydric alcohols and aliphatic polybasic acids, or aliphatic-aromatic polyesters, Single or mixed or random copolymerization or block copolymerization of random copolymers or block copolymers composed of two or more monomer components selected from aliphatic polyhydric alcohols and two or more monomer components selected from aliphatic polybasic acids It may be.
  • the mixed amount or copolymerization amount of the aliphatic polyester may be 1 to 40 parts by weight based on the total amount of the mixture or copolymer.
  • the amount or copolymerization amount of the aliphatic polyester is about 1 to 10% by weight based on the total amount of the mixture or copolymer, and the amount of TiO 2 is about 1 to 40% by weight based on the total amount of the mixture. 5 to 30% by weight, more preferably 10 to 20% by weight, and the amount of the other additives is suitably about 1 to 5% based on the total amount of the mixture.
  • the aliphatic polyhydric alcohol is ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, 1,3-butanediol, 1,4-butanediol, 3-methyl-1,5-pentanediol, It may include one or more selected from 1,6-hexanediol, 1,9-nonanediol, neopentyl glycol, polytetramethylene glycol, 1,4-cyclohexanedimethanol, 1,4-benzenedimethanol.
  • the aliphatic polybasic acid is succinic acid, oxalic acid, malonic acid, glutaric acid, adipic acid, pimeric acid (pimelic acid), sberic acid, azelaic acid (azelaic acid), sebacic acid, undecane dicarboxylic acid It may include one or more selected from dodecane dicarboxylic acid, phenyl succinic acid, 1,4-phenylene diacetic acid.
  • the biodegradable razor handle may further comprise one or more additives selected from dispersants, plasticizers, organic fillers, inorganic fillers, plasticizers, wetting agents, ultraviolet absorbers, antioxidants, lubricants, and colorants as needed. .
  • the polylactide may include 60 to 80 parts by weight
  • the aliphatic polyester or aliphatic-aromatic polyester may be included in an amount of 1 to 30 parts by weight
  • the additive may include 0.005 to 15 parts by weight.
  • the amount when the amount is added in an amount exceeding the range, the dispersibility may be lowered and the cost may be increased.
  • the amount is added in the amount below the range, the flexibility may be lowered.
  • the method of manufacturing a biodegradable razor handle according to the present invention is characterized in that it comprises the step of preparing a biodegradable razor handle composition comprising polylactide and the step of injecting the biodegradable razor handle composition.
  • biodegradable razor handle composition may further comprise aliphatic polyester or aliphatic-aromatic polyester.
  • the temperature of the mold may be 70 ⁇ 150 °C
  • the cooling time may be 20 ⁇ 120 seconds. If the temperature and cooling time are out of the range, the heat resistance of the injection molded product may not be maintained, and crystals may not be crystallized in the injection process, resulting in deformation.
  • the razor according to the present invention is characterized in that it comprises a cartridge and a biodegradable razor handle manufactured according to the present invention.
  • FIG. 2 An example of a razor according to the present invention is shown in FIG. 2, but it is only shown as one application of the biodegradable razor handle according to the present invention, and the scope of the present invention is not limited thereto.
  • the biodegradable razor handle according to the present invention can be applied in various forms to various types of razors in the art.
  • the razor is largely comprised of a biodegradable razor handle 2 according to the invention; And a cartridge (1) associated with a biodegradable razor handle (2).
  • the cartridge includes a cartridge body, a blade seated on the cartridge body, a guard provided at the front of the blade, a lubrication band provided at the rear of the blade, and a cartridge body to be coupled with the biodegradable razor handle 2.
  • a cartridge body to be coupled with the biodegradable razor handle 2.
  • it may be configured to include a housing, reference numerals of these components are omitted in FIG.
  • composition of the present invention 80 parts by weight of polylactide (Natureworks 2002D), 10 parts by weight of aliphatic polyester (Basf ecoflex7011), 10 parts by weight of inorganic matter (coach, KC-3000), crystallization agent (Nissan Chemical, ecopromote) 0.5 Part by weight, 0.5 parts by weight of a dispersant (Lion Chemtech, LC 140 B) was prepared.
  • the prepared resin was heated with a cooling time of 40 s by heating the mold temperature to 120 ° C. in the injection process.
  • Comparative Composition 1 was prepared by including 80 parts by weight of polylactide (L type), 10 parts by weight of aliphatic polyester, and 10 parts by weight of inorganic material, 1 part by weight of crystallization agent and 0.5 part by weight of dispersant.
  • the prepared resin was worked with a cooling time of 20 s under a mold temperature at room temperature in an injection process.
  • Comparative Composition 2 was prepared including 80 parts by weight of polylactide (type D), 10 parts by weight of aliphatic aromatic polyester, and 10 parts by weight of inorganic material.
  • the prepared resin was worked with a cooling time of 40 s at room temperature under a mold temperature in an injection process.
  • the handle of the shaver after the injection process was subjected to heat resistance simulation and measured after dipping the handle in water at 75 ° C. for 1 minute.
  • the contact part of the handle and cartridge which is used most during shaving was measured by applying a compressive load, and this part is directly affected by the tension.
  • the 1000 times Pivot Test applies the Pivot 1000 times with 1mm extension to the handle and handle contact area before and after the heat test (75 °C dipping) to determine the mechanical properties of the resin against the load.
  • the fatigue degree of the polylactic acid shaver could be improved by adding aliphatic polyester (or aliphatic aromatic polyester).
  • DSC differential scanning analyzer
  • Biodegradation rate was calculated according to Equation 1 by the ratio of the biodegradation value of the sample and the standard material biodegradation value measured for 180 days by KS M3100-1 (2003).
  • the biodegradable razor handle can be improved by adjusting the crystallization degree of polylactide to the problem of the reduction of physical properties in hot water, which is the above problem.
  • the fatigue can be improved by adding an aliphatic polyester (or an aliphatic aromatic polyester) to improve the impact resistance of the razor.
  • the injection time of the shaver is not injection at the crystallization temperature using a conventional injection method, specifically polylactide, but using inorganic and predetermined organic crystallization agent, specifically talc and predetermined organic crystallization agent, More specifically, it was confirmed that the injection time can be shortened by using talc and phosphonate.
  • an eco-friendly shaver in the manufacture of a portable wet shaver, can be manufactured by using carbon dioxide reduction and biodegradable polylactic acid, and the handle is prevented from being easily deformed by external stress in hot water.
  • the shaving handle in a specific injection process using polylactic acid, aliphatic polyester, blending, and nucleating agent, for example, by heating the temperature of the mold to 70-150 ° C., the shaving handle can be shaved even at high temperatures by sharply increasing the crystallinity of the shaver handle. can do.

Abstract

The present invention relates to an environmentally-friendly, portable wet razor manufactured using polylactic acid which is effective in reducing carbon dioxide emissions and is biodegradable, and to a razor that can be used for shaving at high temperatures by drastically increasing the degree of crystallinity of a razor handle in a particular injection molding process of blending polylactic acid with an aliphatic polyester and using a nucleating agent, in order to prevent the handle from being easily deformed by external stresses while in hot water.

Description

생분해성 면도기 핸들, 이의 제조방법, 및 이에 의해 제조된 생분해성 면도기 핸들을 포함하는 면도기Razor comprising a biodegradable razor handle, a method of making the same, and a biodegradable razor handle produced thereby
본 발명은, 고온 다습한 환경에서 내열성이 우수한 폴리락트산계 중합체 생분해성 면도기 핸들, 이의 제조방법, 이에 의해 제조된 생분해성 면도기 핸들을 포함하는 면도기에 관한 것이다.The present invention relates to a polylactic acid-based polymer biodegradable razor handle having excellent heat resistance in a high temperature and high humidity environment, a manufacturing method thereof, and a razor comprising a biodegradable razor handle manufactured thereby.
기존 석유계로부터 유래된 원재료를 사용한 휴대용 면도기는 대부분 사용된 후 별다른 처리 과정없이 그대로 매립되므로, 화학적 또는 생물학적으로 안정한 석유계 수지들은 거의 분해되지 않고 땅 속에 축적되어, 매립지의 수명 단축 및 지구 토양 오염의 원인이 되고 있다.Since portable razors using raw materials derived from conventional petroleum-based materials are mostly used and landfilled without any treatment, chemical or biologically stable petroleum-based resins accumulate in the soil with little degradation, resulting in shorter landfills and global soil pollution. Caused by.
이러한 분해가 되지 않는 석유계 수지를 사용한 면도기의 단점을 보안하기 위해 생분해성이 높은 지방족 폴리에스테르인 폴리락트산 면도기의 생산이 시도되고 판매하고 있으나 60~80℃의 온수에서 폴리락트산의 유리전이 온도가 낮은 관계로 외부 응력에 의하여 너무 쉽게 변형이 일어나는 문제점을 가지고 있다. 이에 고온의 온수에서도 면도가 가능한 면도기 핸들이 요구되고 있다.In order to protect the shortcomings of razors using petroleum-based resins that cannot be decomposed, the production of polylactic acid shavers, which are highly biodegradable aliphatic polyesters, has been attempted and sold, but the glass transition temperature of polylactic acid in hot water of Due to the low relationship, there is a problem that deformation occurs too easily due to external stress. Accordingly, there is a demand for a razor handle capable of shaving even in hot water.
본 발명의 목적은, 면도기 핸들의 결정화도를 급격히 높임으로써, 고온에서도 면도 가능한 면도기를 제공하는 것이다.An object of the present invention is to provide a razor which can shave even at high temperatures by rapidly increasing the crystallinity of the razor handle.
본 발명은, 폴리락티드를 포함하는 것을 특징으로 하는 생분해성 면도기 핸들을 제공한다.The present invention provides a biodegradable razor handle comprising polylactide.
본 발명은, 카트리지 및 상기 생분해성 면도기 핸들을 포함하는 것을 특징으로 하는 면도기를 제공한다.The present invention provides a razor comprising a cartridge and the biodegradable razor handle.
본 발명은, 폴리락티드를 포함하는 생분해성 면도기 핸들 조성물을 준비하는 단계 및 상기 생분해성 면도기 핸들 조성물을 사출하는 단계를 포함하는 것을 특징으로 하는 생분해성 면도기 핸들의 제조방법을 제공한다.The present invention provides a method for producing a biodegradable razor handle, comprising the steps of preparing a biodegradable razor handle composition comprising polylactide and injecting the biodegradable razor handle composition.
본 발명에 따르면, 휴대용 습식 면도기의 제조에 있어 이산화탄소 발생량 절감 및 생분해성이 있는 폴리락트산의 사용을 통하여 친환경 면도기를 제조할 수 있다.According to the present invention, in the manufacture of a portable wet shaver, an eco-friendly shaver can be manufactured through the use of polylactic acid having reduced carbon dioxide generation and biodegradability.
또한, 핸들이 나타나는 온수에서 외부 응력에 쉽게 변형되는 것을 방지하기 위해서, 폴리락트산과 지방족 폴리에스테르와 블렌딩 및 핵제를 이용한 특정 사출공정에서 면도기 핸들의 결정화도를 급격히 높임으로 고온에서도 면도 가능한 면도기를 제공할 수 있다.In addition, in order to prevent the handle from being easily deformed by external stress in hot water, it is possible to provide a shaver capable of shaving even at high temperatures by sharply increasing the crystallinity of the razor handle in certain injection processes using polylactic acid, aliphatic polyester, blending, and nucleating agent. Can be.
도 1은, 실시예 및 비교예 2의 내열 시뮬레이션 결과를 도시한 도면이다.1 is a diagram illustrating heat resistance simulation results of Example and Comparative Example 2. FIG.
도 2는, 본 발명에 따른 생분해성 면도기 핸들이 적용된 면도기의 한 예를 도시한 도면이다.2 is a view showing an example of a razor to which a biodegradable razor handle according to the present invention is applied.
본 발명에 따른 생분해성 면도기 핸들은, 폴리락티드를 포함하는 것을 특징으로 한다.The biodegradable razor handle according to the invention is characterized in that it comprises polylactide.
여기서, 상기 폴리락티드의 중량 평균분자량은 1만∼40만일 수 있다. Here, the weight average molecular weight of the polylactide may be 10,000 to 400,000.
구체적으로 설명하면, 상기 폴리락티드의 중량 평균분자량은 1만∼40만 정도가 바람직하고, 지방족 폴리에스테르는 폴리젖산과 혼합시키는 경우의 중량 평균분자량은 1만∼50만 정도, 바람직하게는 3만∼40만 정도, 더욱 바람직하게는 5만∼30만 정도가 적합하고, 또한 폴리락티드과 공중합시키는 경우에는 그 공중합체의 중량 평균분자량이 1만∼50만 정도, 바람직하게는 3만∼40만 정도, 더욱 바람직하게는 5만∼30만 정도가 적합하다.Specifically, the weight average molecular weight of the polylactide is preferably 10,000 to 400,000, and the weight average molecular weight of the aliphatic polyester when mixed with polylactic acid is about 10,000 to 500,000, preferably 3 About 10,000-400,000, More preferably, about 50,000-300,000 are suitable, and when copolymerizing with polylactide, the weight average molecular weight of the copolymer is about 10,000-500,000, Preferably it is 30,000-40 About 10,000, More preferably, about 50,000-300,000 are suitable.
한편, 본 발명에 따른 생분해성 면도기 핸들은, 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르를 더 포함할 수 있다. Meanwhile, the biodegradable razor handle according to the present invention may further include an aliphatic polyester or an aliphatic-aromatic polyester.
예컨대, 상기 폴리락티드는 60~99중량부로 포함하고, 상기 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르는 1~40중량부로 포함하는 것이 바람직하다.For example, the polylactide is included in 60 to 99 parts by weight, and the aliphatic polyester or aliphatic-aromatic polyester is preferably included in 1 to 40 parts by weight.
여기서, 상기 첨가량 범위 보다 과량으로 첨가되면 분산성이 저하될 수 있고 원가 상승이 초래될 수 있으며, 상기 첨가량 범위 보다 소량으로 첨가되면 유연성이 저하될 수 있다.In this case, when the amount is added in an amount greater than the range of the addition amount, the dispersibility may be lowered and the cost may increase.
상기 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르로는, 폴리히드록시카르본산, 히드록시카르본산 또는 지방족 다가알콜과 지방족 다가염기산으로 이루어지는 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르이거나, 히드록시카르본산이나 지방족 다가알콜에서 선택되는 2종 이상의 모노머 성분 및 지방족 다가염기산에서 선택되는 2종 이상의 모노머 성분으로 이루어지는 랜덤 공중합체 또는 블록 공중합체의 단독 또는 2종 이상을 혼합한 것 또는 랜덤 공중합 또는 블록 공중합 시킨 것일 수 있다. Examples of the aliphatic polyesters or aliphatic-aromatic polyesters include polyhydroxycarboxylic acid, hydroxycarboxylic acid or aliphatic polyesters composed of aliphatic polyhydric alcohols and aliphatic polybasic acids, or aliphatic-aromatic polyesters, Single or mixed or random copolymerization or block copolymerization of random copolymers or block copolymers composed of two or more monomer components selected from aliphatic polyhydric alcohols and two or more monomer components selected from aliphatic polybasic acids It may be.
상기 지방족 폴리에스테르의 혼합량 또는 공중합량은 혼합체 또는 공중합체의 전량에 대하여 1 ∼40 중량부일 수 있다.The mixed amount or copolymerization amount of the aliphatic polyester may be 1 to 40 parts by weight based on the total amount of the mixture or copolymer.
구체적으로 설명하면, 이 지방족 폴리에스테르의 혼합량 또는 공중합량은 혼합체 또는 공중합체의 전량에 대하여 1 ∼10 중량% 정도, TiO2의 혼합량은 혼합체 전량을 기준으로 1∼40 중량% 정도, 바람직하게는 5∼30 중량%, 더욱 바람직하게는 10∼20 중량% 이고, 이 밖의 첨가제의 혼합량은 혼합체 전량을 기준으로 1∼5% 정도가 적합하다.Specifically, the amount or copolymerization amount of the aliphatic polyester is about 1 to 10% by weight based on the total amount of the mixture or copolymer, and the amount of TiO 2 is about 1 to 40% by weight based on the total amount of the mixture. 5 to 30% by weight, more preferably 10 to 20% by weight, and the amount of the other additives is suitably about 1 to 5% based on the total amount of the mixture.
상기 히드록시카르본산은, 글리콜산, L-젖산, D-젖산, D/L-젖산, 3-히드록시브티르산, 4-히드록시브티르산, 3-히드록시발레르산, 5-히드록시발레르산, 6-히드록시카프론산 중에서 선택된 1종 이상을 포함할 수 있다. The hydroxycarboxylic acid, glycolic acid, L- lactic acid, D- lactic acid, D / L- lactic acid, 3-hydroxybutyric acid, 4-hydroxybutyric acid, 3-hydroxy valeric acid, 5- hydrate It may include one or more selected from oxyvaleric acid, 6-hydroxycapronic acid.
상기 지방족 다가알콜은, 에틸렌 글리콜, 디에틸렌 글리콜, 트리에틸렌 글리콜, 폴리에틸렌 글리콜, 프로필렌 글리콜, 디프로필렌 글리콜, 1,3-부탄디올, 1,4-부탄디올, 3-메틸-1,5-펜탄디올, 1,6-헥산디올, 1,9-노난디올, 네오펜틸 글리콜, 폴리테트라메틸렌 글리콜, 1,4-사이클로헥산디메탄올, 1,4-벤젠디메탄올 중에서 선택된 1종 이상을 포함할 수 있다. The aliphatic polyhydric alcohol is ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, 1,3-butanediol, 1,4-butanediol, 3-methyl-1,5-pentanediol, It may include one or more selected from 1,6-hexanediol, 1,9-nonanediol, neopentyl glycol, polytetramethylene glycol, 1,4-cyclohexanedimethanol, 1,4-benzenedimethanol.
상기 지방족 다가염기산은 숙신산, 옥살산, 말론산, 글루타르산, 아디프산, 피메린산(pimelic acid), 스베린산(sberic acid), 아젤라인산(azelaic acid), 세바신산, 운데칸 디카르복시산, 도데칸 디카르복시산, 페닐숙신산, 1,4-페닐렌 디아세트산 중에서 선택된 1종 이상을 포함할 수 있다.The aliphatic polybasic acid is succinic acid, oxalic acid, malonic acid, glutaric acid, adipic acid, pimeric acid (pimelic acid), sberic acid, azelaic acid (azelaic acid), sebacic acid, undecane dicarboxylic acid It may include one or more selected from dodecane dicarboxylic acid, phenyl succinic acid, 1,4-phenylene diacetic acid.
본 발명에 따른, 생분해성 면도기 핸들은, 필요에 따라 분산제, 가소제, 유기 충전제, 무기 충전제, 가소제, 습윤제, 자외선 흡수제, 산화방지제, 활제, 및 착색제 중에서 선택된 1종 이상의 첨가제를 더 포함할 수 있다.In accordance with the present invention, the biodegradable razor handle may further comprise one or more additives selected from dispersants, plasticizers, organic fillers, inorganic fillers, plasticizers, wetting agents, ultraviolet absorbers, antioxidants, lubricants, and colorants as needed. .
예컨대, 이 경우, 상기 폴리락티드는 60~80중량부로 포함하고, 상기 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르는 1~30중량부로 포함하며, 상기 첨가제는 0.005~15중량부로 포함할 수 있다. 여기서, 상기 첨가량 범위 보다 과량으로 첨가되면 분산성이 저하될 수 있고 원가 상승이 초래될 수 있으며, 상기 첨가량 범위 보다 소량으로 첨가되면 유연성이 저하될 수 있다.For example, in this case, the polylactide may include 60 to 80 parts by weight, the aliphatic polyester or aliphatic-aromatic polyester may be included in an amount of 1 to 30 parts by weight, and the additive may include 0.005 to 15 parts by weight. In this case, when the amount is added in an amount exceeding the range, the dispersibility may be lowered and the cost may be increased. When the amount is added in the amount below the range, the flexibility may be lowered.
한편, 본 발명에 따른 생분해성 면도기 핸들의 제조방법은, 폴리락티드를 포함하는 생분해성 면도기 핸들 조성물을 준비하는 단계 및 상기 생분해성 면도기 핸들 조성물을 사출하는 단계를 포함하는 것을 특징으로 한다.On the other hand, the method of manufacturing a biodegradable razor handle according to the present invention is characterized in that it comprises the step of preparing a biodegradable razor handle composition comprising polylactide and the step of injecting the biodegradable razor handle composition.
여기서, 상기 생분해성 면도기 핸들 조성물은 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르를 더 포함할 수 있다. Here, the biodegradable razor handle composition may further comprise aliphatic polyester or aliphatic-aromatic polyester.
그리고, 상기 사출하는 단계에서, 금형의 온도가 70~150℃일 수 있으며, 냉각 시간이 20~120초일 수 있다. 상기 온도 및 냉각시간을 벗어난 경우에는 사출품의 내열성을 유지하지 못하며, 사출공정에서 결정화되지 못하여 변형이 올 수 있다.And, in the step of injecting, the temperature of the mold may be 70 ~ 150 ℃, the cooling time may be 20 ~ 120 seconds. If the temperature and cooling time are out of the range, the heat resistance of the injection molded product may not be maintained, and crystals may not be crystallized in the injection process, resulting in deformation.
한편, 본 발명에 따른 면도기는, 카트리지 및 본 발명에 따라 제조된 생분해성 면도기 핸들을 포함하는 것을 특징으로 한다.On the other hand, the razor according to the present invention is characterized in that it comprises a cartridge and a biodegradable razor handle manufactured according to the present invention.
본 발명에 따른 면도기의 한 예를 도 2에 도시하였으나, 이는 본 발명에 따른 생분해성 면도기 핸들의 하나의 적용예로서 도시한 것일 뿐, 이로 본 발명의 범위가 한정되는 것은 아니다. 본 발명에 따른 생분해성 면도기 핸들은 당업계에 다양한 형태의 면도기에 다양한 형태로 적용될 수 있음은 물론이다.An example of a razor according to the present invention is shown in FIG. 2, but it is only shown as one application of the biodegradable razor handle according to the present invention, and the scope of the present invention is not limited thereto. The biodegradable razor handle according to the present invention can be applied in various forms to various types of razors in the art.
도 2에 도시된 바와 같이 면도기는 크게, 본 발명에 따른 생분해성 면도기 핸들(2); 및 생분해성 면도기 핸들(2)과 결합된 카트리지(1)로 구성된다.As shown in FIG. 2, the razor is largely comprised of a biodegradable razor handle 2 according to the invention; And a cartridge (1) associated with a biodegradable razor handle (2).
참고적으로 카트리지는 카트리지 바디와, 카트리지 바디에 안착되는 블레이드와, 블레이드의 전방에 구비되는 가드와, 블레이드의 후방에 구비되는 윤활밴드와, 카트리지 바디가 생분해성 면도기 핸들(2)과 결합되도록 하는 하우징을 포함하여 구성될 수 있으나, 도 2에서 이들 구성의 참조번호는 생략하였다.For reference, the cartridge includes a cartridge body, a blade seated on the cartridge body, a guard provided at the front of the blade, a lubrication band provided at the rear of the blade, and a cartridge body to be coupled with the biodegradable razor handle 2. Although it may be configured to include a housing, reference numerals of these components are omitted in FIG.
이하에서는 본 발명을 실시예를 통해 구체적으로 설명하기로 하나, 이로 본 발명의 범위가 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to Examples, but the scope of the present invention is not limited thereto.
실시예EXAMPLE
본 발명의 조성물은, 폴리락티드 80 중량부(Natureworks 2002D), 지방족 폴리에스테르(Basf ecoflex7011) 10 중량부, 무기물(코치, KC-3000) 10 중량부에, 결정화제(닛산 화학, ecopromote) 0.5중량부, 분산제(라이온켐텍, L-C 140 B) 0.5중량부를 포함하여 제조하였다.The composition of the present invention, 80 parts by weight of polylactide (Natureworks 2002D), 10 parts by weight of aliphatic polyester (Basf ecoflex7011), 10 parts by weight of inorganic matter (coach, KC-3000), crystallization agent (Nissan Chemical, ecopromote) 0.5 Part by weight, 0.5 parts by weight of a dispersant (Lion Chemtech, LC 140 B) was prepared.
제조한 수지를 사출공정에서 금형 온도를 120℃로 가열하여 40s의 냉각 시간을 가지고 작업하였다.The prepared resin was heated with a cooling time of 40 s by heating the mold temperature to 120 ° C. in the injection process.
비교예 1Comparative Example 1
비교 조성물1은, 폴리락티드 80 중량부(L타입), 지방족 폴리에스테르 10 중량부, 무기물 10 중량부에, 결정화제 1중량부, 분산제 0.5중량부를 포함하여 제조하였다. Comparative Composition 1 was prepared by including 80 parts by weight of polylactide (L type), 10 parts by weight of aliphatic polyester, and 10 parts by weight of inorganic material, 1 part by weight of crystallization agent and 0.5 part by weight of dispersant.
제조한 수지를 사출공정에서 금형 온도를 상온 하에 20s의 냉각 시간을 가지고 작업하였다.The prepared resin was worked with a cooling time of 20 s under a mold temperature at room temperature in an injection process.
비교예 2Comparative Example 2
비교 조성물2는, 폴리락티드 80 중량부(D타입), 지방족 방향족 폴리에스테르10 중량부, 무기물 10 중량부를 포함하여 제조하였다. Comparative Composition 2 was prepared including 80 parts by weight of polylactide (type D), 10 parts by weight of aliphatic aromatic polyester, and 10 parts by weight of inorganic material.
제조한 수지를 사출공정에서 금형 온도를 상온 하에 40s의 냉각 시간을 가지고 작업하였다.The prepared resin was worked with a cooling time of 40 s at room temperature under a mold temperature in an injection process.
실험예Experimental Example
사출공정을 마친 면도기의 핸들은 내열 시뮬레이션을 실시하였으며 75℃의 물에 핸들을 1분간 dipping한 후 측정하였다. Shaving시에 가장 많이 사용되는 핸들과 카트리지의 접촉부위를 Compressive load를 가하여 측정 하였으며, 이 부위는tension에 직접적 영향을 받는 곳이다.The handle of the shaver after the injection process was subjected to heat resistance simulation and measured after dipping the handle in water at 75 ° C. for 1 minute. The contact part of the handle and cartridge which is used most during shaving was measured by applying a compressive load, and this part is directly affected by the tension.
그리고 이때 물성의 변화를 다음 표에 나타내었다.In this case, the physical properties are shown in the following table.
표 1
내열 테스트 전후 변화율
Properties Yield point Tensile stress Secant Modulus
실시예 변화없음 변화없음 변화없음
비교예1 34%감소 46%감소 38% 감소
비교예2 38%감소 53%감소 40% 감소
Table 1
Rate of change before and after heat test
Properties Yield point Tensile stress Secant Modulus
EXAMPLE No change No change No change
Comparative Example 1 34% reduction 46% reduction 38% reduction
Comparative Example 2 38% reduction 53% reduction 40% reduction
본 발명에 따른 제조 공정에 따라 면도기를 제작한 경우 위와 같이 내열 테스트 이후 물성의 변화가 없었다. When the razor was manufactured according to the manufacturing process according to the present invention, there was no change in physical properties after the heat test as described above.
1000회 Pivot Test는 내열 테스트(75℃ dipping) 전후 핸들과 핸들 접촉부분에 extension을 1mm로 1000번의 Pivot을 가하여 하중에 대한 수지의 기계적 물성을 파악한다.The 1000 times Pivot Test applies the Pivot 1000 times with 1mm extension to the handle and handle contact area before and after the heat test (75 ℃ dipping) to determine the mechanical properties of the resin against the load.
테스트 결과 폴리락트산계 면도기의 피로도를 지방족 폴리에스테(또는 지방족 방향족 폴리에스테르)를 추가하여 개선 할 수 있었다.As a result of the test, the fatigue degree of the polylactic acid shaver could be improved by adding aliphatic polyester (or aliphatic aromatic polyester).
열특성 분석은 시차 주사 분석기(DSC)를 이용하였다. 본 장치는 승온 속도를 10℃/분으로 설정하여 시료의 열특성을 측정하고, 초기 흡열 변화를 유리전이 온도(Tc)로, 이후 나타나는 발열 변화를 융점(Tm)으로 나타냈다. 흡열 곡선의 면적을 계산하여 결정 융해열(△Hm)로 결정하였다. Thermal characterization was performed using a differential scanning analyzer (DSC). This apparatus measured the thermal characteristics of the sample by setting the temperature increase rate to 10 ° C./min, and indicated the initial endothermic change as the glass transition temperature (Tc), and the exothermic change shown thereafter as the melting point (Tm). The area of the endothermic curve was calculated and determined by the heat of fusion (ΔHm).
표 2
유리전이온도(℃) 융점(℃) 결정융해열(J/g)
실시예 63 167 45
비교예1 57 160 20
비교예2 56 160 25
TABLE 2
Glass transition temperature (℃) Melting Point (℃) Heat of fusion (J / g)
EXAMPLE 63 167 45
Comparative Example 1 57 160 20
Comparative Example 2 56 160 25
생분해율은 KS M3100-1(2003)에 의해 180일간 측정한 시료의 생분해도 값과 표준 물질의 생분해도 값의 비를 식 1에 따라 계산하였다. Biodegradation rate was calculated according to Equation 1 by the ratio of the biodegradation value of the sample and the standard material biodegradation value measured for 180 days by KS M3100-1 (2003).
[식 1][Equation 1]
Figure PCTKR2010001465-appb-I000001
Figure PCTKR2010001465-appb-I000001
표 3
생분해율(%)
실시예 100
비교예1 100
비교예2 100
TABLE 3
Biodegradation rate (%)
EXAMPLE 100
Comparative Example 1 100
Comparative Example 2 100
이를 통해, 생분해성 면도기 핸들은 앞서의 문제점인 온수에서의 물성 감소의 문제점을 폴리락티드의 결정화도에 조절하여 개선할 수 있는 것을 확인 하였다. 또한, 면도기의 내충격강도를 개선하기 위하여 지방족 폴리에스테르(혹은 지방족 방향족 폴리에스테르)를 추가하여 피로도를 개선할수 있는 것을 확인하였다.Through this, it was confirmed that the biodegradable razor handle can be improved by adjusting the crystallization degree of polylactide to the problem of the reduction of physical properties in hot water, which is the above problem. In addition, it was confirmed that the fatigue can be improved by adding an aliphatic polyester (or an aliphatic aromatic polyester) to improve the impact resistance of the razor.
또한 면도기의 사출시간은 통상적인 사출 방법, 구체적으로는 폴리락티드를 사용하여 결정화 온도에서 사출하는 것 이 아니라 무기물과 소정의 유기 결정화제, 구체적으로는 탈크와 소정의 유기 결정화제를 이용하고, 더욱 구체적으로는 탈크와 포스폰산염을 사용하여 사출시간을 단축시킬 수 있는 것을 확인하였다.In addition, the injection time of the shaver is not injection at the crystallization temperature using a conventional injection method, specifically polylactide, but using inorganic and predetermined organic crystallization agent, specifically talc and predetermined organic crystallization agent, More specifically, it was confirmed that the injection time can be shortened by using talc and phosphonate.
이와 같이 본 발명에 따르면, 휴대용 습식 면도기의 제조에 있어 이산화탄소 발생량 절감 및 생분해성이 있는 폴리락트산의 사용을 통하여 친환경 면도기를 제조할 수 있으며, 이때 핸들이 나타나는 온수에서 외부 응력에 쉽게 변형되는 것을 방지하기 위해, 폴리락트산과 지방족 폴리에스테르와 블렌딩 및 핵제를 이용한 특정 사출공정에서 예컨대 금형의 온도를 70~150℃로 가열하여 작업함으로써, 면도기 핸들의 결정화도를 급격히 높임으로, 고온에서도 면도 가능한 면도기를 제조할 수 있다.As described above, according to the present invention, in the manufacture of a portable wet shaver, an eco-friendly shaver can be manufactured by using carbon dioxide reduction and biodegradable polylactic acid, and the handle is prevented from being easily deformed by external stress in hot water. To do this, in a specific injection process using polylactic acid, aliphatic polyester, blending, and nucleating agent, for example, by heating the temperature of the mold to 70-150 ° C., the shaving handle can be shaved even at high temperatures by sharply increasing the crystallinity of the shaver handle. can do.

Claims (17)

  1. 폴리락티드를 포함하는 것을 특징으로 하는 생분해성 면도기 핸들.A biodegradable razor handle comprising polylactide.
  2. 청구항 1에 있어서,The method according to claim 1,
    지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르를 더 포함하는 것을 특징으로 하는 생분해성 면도기 핸들.A biodegradable razor handle further comprising aliphatic polyester or aliphatic-aromatic polyester.
  3. 청구항 2에 있어서,The method according to claim 2,
    상기 폴리락티드는 60~99중량부로 포함하고,The polylactide includes 60 to 99 parts by weight,
    상기 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르는 1~40중량부로 포함하는 것을 특징으로 하는 생분해성 면도기 핸들.The aliphatic polyester or aliphatic-aromatic polyester is a biodegradable razor handle, characterized in that it comprises 1 to 40 parts by weight.
  4. 청구항 1에 있어서,The method according to claim 1,
    상기 폴리락티드의 중량 평균분자량은 1만∼40만인 것을 특징으로 하는 생분해성 면도기 핸들.Biodegradable razor handle, characterized in that the weight average molecular weight of the polylactide is 10,000 to 400,000.
  5. 청구항 2에 있어서,The method according to claim 2,
    상기 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르로는, 폴리히드록시카르본산, 히드록시카르본산 또는 지방족 다가알콜과 지방족 다가염기산으로 이루어지는 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르 또는 히드록시카르본산이나 지방족 다가알콜에서 선택되는 2종 이상의 모노머 성분 및 지방족 다가염기산에서 선택되는 2종 이상의 모노머 성분으로 이루어지는 랜덤 공중합체 또는 블록 공중합체의 단독 또는 2종 이상을 혼합한 것 또는 랜덤 공중합 또는 블록 공중합 시킨 것을 특징으로 하는 생분해성 면도기 핸들.Examples of the aliphatic polyesters or aliphatic-aromatic polyesters include polyhydroxycarboxylic acids, hydroxycarboxylic acids or aliphatic polyesters composed of aliphatic polyhydric alcohols and aliphatic polybasic acids or aliphatic-aromatic polyesters or hydroxycarboxylic acids or aliphatic compounds. One or more of random copolymers or block copolymers composed of two or more monomer components selected from polyhydric alcohols and two or more monomer components selected from aliphatic polybasic acids, or a mixture of random copolymers or block copolymers Featured biodegradable razor handles.
  6. 청구항 5에 있어서,The method according to claim 5,
    상기 히드록시카르본산은, 글리콜산, L-젖산, D-젖산, D/L-젖산, 3-히드록시브티르산, 4-히드록시브티르산, 3-히드록시발레르산, 5-히드록시발레르산, 6-히드록시카프론산 중에서 선택된 1종 이상을 포함하는 것을 특징으로 하는 생분해성 면도기 핸들.The hydroxycarboxylic acid, glycolic acid, L- lactic acid, D- lactic acid, D / L- lactic acid, 3-hydroxybutyric acid, 4-hydroxybutyric acid, 3-hydroxy valeric acid, 5- hydrate A biodegradable razor handle comprising at least one selected from oxyvaleric acid and 6-hydroxycapronic acid.
  7. 청구항 5에 있어서,The method according to claim 5,
    상기 지방족 다가알콜은, 에틸렌 글리콜, 디에틸렌 글리콜, 트리에틸렌 글리콜, 폴리에틸렌 글리콜, 프로필렌 글리콜, 디프로필렌 글리콜, 1,3-부탄디올, 1,4-부탄디올, 3-메틸-1,5-펜탄디올, 1,6-헥산디올, 1,9-노난디올, 네오펜틸 글리콜, 폴리테트라메틸렌 글리콜, 1,4-사이클로헥산디메탄올, 1,4-벤젠디메탄올 중에서 선택된 1종 이상을 포함하는 것을 특징으로 하는 생분해성 면도기 핸들.The aliphatic polyhydric alcohol is ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, 1,3-butanediol, 1,4-butanediol, 3-methyl-1,5-pentanediol, Characterized in that it comprises one or more selected from 1,6-hexanediol, 1,9-nonanediol, neopentyl glycol, polytetramethylene glycol, 1,4-cyclohexanedimethanol, 1,4-benzenedimethanol Biodegradable razor handle.
  8. 청구항 5에 있어서,The method according to claim 5,
    상기 지방족 다가염기산은 숙신산, 옥살산, 말론산, 글루타르산, 아디프산, 피메린산(pimelic acid), 스베린산(sberic acid), 아젤라인산(azelaic acid), 세바신산, 운데칸 디카르복시산, 도데칸 디카르복시산, 페닐숙신산, 1,4-페닐렌 디아세트산 중에서 선택된 1종 이상을 포함하는 것을 특징으로 하는 생분해성 면도기 핸들.The aliphatic polybasic acid is succinic acid, oxalic acid, malonic acid, glutaric acid, adipic acid, pimeric acid (pimelic acid), sberic acid, azelaic acid (azelaic acid), sebacic acid, undecane dicarboxylic acid Biodegradable razor handle comprising at least one selected from dodecane dicarboxylic acid, phenylsuccinic acid, 1,4-phenylene diacetic acid.
  9. 청구항 2에 있어서,The method according to claim 2,
    분산제, 가소제, 유기 충전제, 무기 충전제, 가소제, 습윤제, 자외선 흡수제, 산화방지제, 활제, 및 착색제 중에서 선택된 1종 이상의 첨가제를 더 포함하는 것을 특징으로 하는 생분해성 면도기 핸들.A biodegradable razor handle further comprising at least one additive selected from dispersants, plasticizers, organic fillers, inorganic fillers, plasticizers, wetting agents, ultraviolet absorbers, antioxidants, lubricants, and colorants.
  10. 청구항 9에 있어서, The method according to claim 9,
    상기 폴리락티드는 60~80중량부로 포함하고,The polylactide includes 60 to 80 parts by weight,
    상기 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르는 1~30중량부로 포함하며,The aliphatic polyester or aliphatic-aromatic polyester includes 1 to 30 parts by weight,
    상기 첨가제는 0.005~15중량부로 포함하는 것을 특징으로 하는 생분해성 면도기 핸들.The additive is a biodegradable razor handle, characterized in that it comprises 0.005 to 15 parts by weight.
  11. 카트리지 및Cartridge and
    폴리락티드를 포함하는 생분해성 면도기 핸들Biodegradable Razor Handle with Polylactide
    을 포함하는 것을 특징으로 하는 면도기.Shaver comprising a.
  12. 카트리지 및Cartridge and
    폴리락티드 및 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르를 포함하는 생분해성 면도기 핸들Biodegradable razor handles comprising polylactide and aliphatic polyester or aliphatic-aromatic polyester
    을 포함하는 것을 특징으로 하는 면도기.Shaver comprising a.
  13. 카트리지 및Cartridge and
    청구항 1 내지 청구항 10 중 어느 한 항에 따른 생분해성 면도기 핸들Biodegradable razor handle according to any one of claims 1 to 10
    을 포함하는 것을 특징으로 하는 면도기.Shaver comprising a.
  14. 폴리락티드를 포함하는 생분해성 면도기 핸들 조성물을 준비하는 단계 및 Preparing a biodegradable razor handle composition comprising polylactide, and
    상기 생분해성 면도기 핸들 조성물을 사출하는 단계를Injecting the biodegradable razor handle composition
    포함하는 것을 특징으로 하는 생분해성 면도기 핸들의 제조방법.Method of producing a biodegradable razor handle, characterized in that it comprises a.
  15. 청구항 14에 있어서,The method according to claim 14,
    상기 생분해성 면도기 핸들 조성물은 지방족 폴리에스테르 또는 지방족-방향족 폴리에스테르를 더 포함하는 것을 특징으로 하는 생분해성 면도기 핸들의 제조방법.Wherein the biodegradable razor handle composition further comprises an aliphatic polyester or an aliphatic-aromatic polyester.
  16. 청구항 14에 있어서,The method according to claim 14,
    상기 사출하는 단계에서, 금형의 온도가 70~150℃인 것을 특징으로 하는 생분해성 면도기 핸들의 제조방법.In the step of injecting, the method of producing a biodegradable razor handle, characterized in that the temperature of the mold is 70 ~ 150 ℃.
  17. 청구항 14에 있어서,The method according to claim 14,
    상기 사출하는 단계에서, 냉각 시간이 20~120초인 것을 특징으로 하는 생분해성 면도기 핸들의 제조방법.In the step of injecting, the biodegradable razor handle manufacturing method characterized in that the cooling time is 20 ~ 120 seconds.
PCT/KR2010/001465 2010-03-09 2010-03-09 Biodegradable razor handle, method for manufacturing same, and razor including a biodegradable razor handle manufactured by same WO2011111881A1 (en)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
EP3797948A1 (en) * 2019-09-30 2021-03-31 BIC Violex S.A. Handle for razor made of bioplastic polymers and vegetable fillers
US11938641B2 (en) 2020-05-20 2024-03-26 BIC Violex Single Member S.A. Razor head with improved spring fingers

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US5714573A (en) * 1995-01-19 1998-02-03 Cargill, Incorporated Impact modified melt-stable lactide polymer compositions and processes for manufacture thereof
US20040034128A1 (en) * 2002-06-17 2004-02-19 National Institute Of Advanced Industrial Science And Technology Biodegradable polylactide resin composition
KR100580228B1 (en) * 2003-10-10 2006-05-16 한국생산기술연구원 Low temperature Injection moldable water-resistant biodegradable plastic compositions and process of producing thereof
KR200437729Y1 (en) * 2006-12-27 2007-12-26 (주) 브러쉬월드 Portable Satety Rozor
WO2008052250A1 (en) * 2006-11-03 2008-05-08 Tristano Pty Ltd Personal grooming tool

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US5714573A (en) * 1995-01-19 1998-02-03 Cargill, Incorporated Impact modified melt-stable lactide polymer compositions and processes for manufacture thereof
US20040034128A1 (en) * 2002-06-17 2004-02-19 National Institute Of Advanced Industrial Science And Technology Biodegradable polylactide resin composition
KR100580228B1 (en) * 2003-10-10 2006-05-16 한국생산기술연구원 Low temperature Injection moldable water-resistant biodegradable plastic compositions and process of producing thereof
WO2008052250A1 (en) * 2006-11-03 2008-05-08 Tristano Pty Ltd Personal grooming tool
KR200437729Y1 (en) * 2006-12-27 2007-12-26 (주) 브러쉬월드 Portable Satety Rozor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3797948A1 (en) * 2019-09-30 2021-03-31 BIC Violex S.A. Handle for razor made of bioplastic polymers and vegetable fillers
US11938641B2 (en) 2020-05-20 2024-03-26 BIC Violex Single Member S.A. Razor head with improved spring fingers

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