KR20010055446A - foam composition of polyolefin for shoes - Google Patents
foam composition of polyolefin for shoes Download PDFInfo
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- KR20010055446A KR20010055446A KR1019990056656A KR19990056656A KR20010055446A KR 20010055446 A KR20010055446 A KR 20010055446A KR 1019990056656 A KR1019990056656 A KR 1019990056656A KR 19990056656 A KR19990056656 A KR 19990056656A KR 20010055446 A KR20010055446 A KR 20010055446A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/02—Ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
- C08F2500/12—Melt flow index or melt flow ratio
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
- C08F2500/18—Bulk density
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
본 발명은 신발용 폴리올레핀 발포 조성물에 관한 것으로서, 더욱 상세하게는 흡착력이 우수하고 인체에 유익한 원적외선과 음이온을 대량 방출하는 숯을 함유하여 살균 및 습기, 땀, 냄새 등의 제거 효과가 뛰어난 신발용 폴리올레핀 발포 조성물에 관한 것이다.The present invention relates to a polyolefin foam composition for shoes, more specifically, a polyolefin for shoes having excellent adsorptive power and charcoal that emits large amounts of far-infrared rays and anions, which are beneficial to the human body, and excellent in sterilization and removal effect of moisture, sweat, odor, etc. It relates to a foam composition.
종래 신발의 안창 및 중창으로 이용되는 발포체의 제조방법으로는 에틸렌비닐아세테이트 수지 또는 폴리우레탄 수지 등에 발포제, 가교제 및 기타 첨가제들을 배합시킨 조성물을 쉬트(sheet)상으로 제조하여 밀폐된 금형안에 투입시킨 후 프레스기를 이용하여 고온·가압하에서 가공하여 가교제와 발포제를 분해시킨 다음 금형을 순간적으로 열어 압력을 제거함으로써 압력차이를 이용하여 급팽창시키는 프레스 몰딩법에 의한 발포성형법이 제안되어 있다.As a method of manufacturing foams used as insoles and midsoles of conventional shoes, a composition in which a foaming agent, a crosslinking agent, and other additives are mixed with ethylene vinyl acetate resin or polyurethane resin is prepared in a sheet, and then put into a closed mold. The foam molding method by the press molding method which processes under high temperature and pressure using a press machine, decomposes a crosslinking agent and a foaming agent, and opens a metal mold | die instantaneously and removes a pressure and expands rapidly using a pressure difference is proposed.
또한, 매트릭스 수지로서 에틸렌비닐아세테이트나 초저밀도폴리에틸렌(VLDPE)를 사용하여 발포체를 사용하는 방법 등이 제안되어 있으나 상기 발포체들은 신발 착용시에 발에서 배출되는 땀을 흡수·제거할 수는 없었으며, 신발을 장시간 벗지 않고 계속 착용함으로써 발에 발생되는 각종 피부 질환 및 악취 등을 방지하지는 못할 뿐만 아니라, 밀도와 결정화도가 서로 수평관계인 고분자 수지의 특성상 초저밀도폴리에틸렌 수지를 사용한 경우는 낮은 결정화도로 인한 기계적 강도의 저하로 제품 품질이 기대에 미치지 못하여 이에 대한 해결책이 요구되어 왔다.In addition, a method of using a foam using ethylene vinyl acetate or ultra low density polyethylene (VLDPE) as a matrix resin has been proposed, but the foams could not absorb and remove the sweat emitted from the foot when the shoes were worn. Not only does the shoe not wear off for a long time, it prevents various skin diseases and odors from occurring on the feet, and the mechanical strength due to low crystallinity is obtained when ultra low density polyethylene resin is used due to the characteristics of polymer resin having a horizontal relationship between density and crystallinity. Due to the lower quality of the product, the product quality did not meet expectations, and a solution for this has been required.
본 발명은 상기와 같은 문제점들을 해결하기 위하여 안출된 것으로서, 기계적 강도가 우수하면서 살균 효과 및 습기, 땀, 냄새 등의 흡수·제거 효과를 겸비한 신발용 폴리올레핀 발포체를 제공하는 것을 목적으로 한다.The present invention has been made to solve the above problems, an object of the present invention is to provide a polyolefin foam for shoes having excellent mechanical strength and combines the effect of sterilization and absorption and removal of moisture, sweat, odor and the like.
본 발명의 이와 같은 목적은, 음이온과 원적외선을 대량 방출하여 강력한 흡습성과 살균력을 발휘하는 숯을 함유하는 폴리올레핀 발포체를 제공함으로써 달성되는데, 본 발명의 신발용 발포체는 비중, 경도, 인장강도, 신율, 파열인열강도 등이 우수할 뿐 아니라 세균번식이 억제되고 땀, 악취 등의 흡수 제거능이 뛰어나 위생적이며, 모세혈관을 확장시켜 혈액순환을 원활하게 함으로써 발의 피로를 방지할 수 있다.This object of the present invention is achieved by providing a polyolefin foam containing charcoal that exhibits strong hygroscopicity and bactericidal power by releasing large amounts of anions and far infrared rays, wherein the foam for footwear of the present invention has a specific gravity, hardness, tensile strength, elongation, It is not only excellent in tear tear strength, but also hygienic because it suppresses bacterial propagation and absorbs and removes sweat and odors. It is hygienic and prevents foot fatigue by expanding capillaries to facilitate blood circulation.
본 발명의 조성물은 폴리올레핀 수지 100 중량부에 대하여, 발포제 0.5∼30 중량부와, 가교제 0.1∼5 중량부와, 숯 분말 0.5∼50 중량부를 혼합하여 구성되는 신발용 폴리올레핀 발포 조성물이다.The composition of this invention is a polyolefin foam composition for shoes comprised by mixing 0.5-30 weight part of foaming agents, 0.1-5 weight part of crosslinking agents, and 0.5-50 weight part of charcoal powder with respect to 100 weight part of polyolefin resins.
본 발명에서 사용되는 폴리올레핀 수지는 에틸렌비닐아세테이트수지(ethylene vinyl acetate, EVA), 저밀도 폴리에틸렌(lowdensity polyethylene, LDPE) 및 선형 저밀도 폴리에틸렌(linear low density polyethylene, LLDPE)으로부터 1종 이상이 선택되어 사용되는데, 융점 70∼150℃, 밀도 0.92∼0.98g/㎤, 용융지수(MI) 0.3∼30g/10min의 물성을 갖도록 구성되는 것이 바람직하다.The polyolefin resin used in the present invention is selected from ethylene vinyl acetate resin (ethylene vinyl acetate, EVA), low density polyethylene (lowdensity polyethylene, LDPE) and linear low density polyethylene (linear low density polyethylene, LLDPE) is used, It is preferable that it is comprised so that it may have a physical property of melting | fusing point 70-150 degreeC, density 0.92-0.98g / cm <3>, melt index (MI) 0.3-30g / 10min.
본 발명에서 사용되는 수지로서 더욱 바람직하게는 에틸렌비닐아세테이트 수지와 저밀도폴리에틸렌 수지를 혼합하여 사용하는 것을 들 수 있는데, 이와 같이 수지를 혼합하여 사용함으로서 수지의 융점이 70∼150℃로 넓은 범위를 가질 수 있게 되어 발포공정에 따른 작업이 용이하게 된다.As the resin used in the present invention, more preferably, an ethylene vinyl acetate resin and a low density polyethylene resin are mixed and used, and by mixing the resin in this way, the melting point of the resin has a wide range of 70 to 150 ° C. It becomes easy to work according to the foaming process.
수지의 밀도는 0.92 내지 0.98g/㎤가 바람직한데, 이 때 수지의 밀도가 0.92g/㎤ 미만인 경우에는 결정화도가 낮아 기계적 물성이 저하되는 단점이 있고 0.98g/㎤를 초과하는 경우 유연성이 저하되어 바람직하지 않다. 즉, 본 발명에서 제안되어 있는 밀도의 범위를 가짐으로서 적정한 결정화도로 인해 수지의 기계적 물성이 양호하게 된다.The density of the resin is preferably 0.92 to 0.98 g / cm 3, but when the resin density is less than 0.92 g / cm 3, the crystallinity is low and mechanical properties are degraded. When the resin density exceeds 0.98 g / cm 3, the flexibility is reduced. Not desirable That is, the mechanical properties of the resin are good due to the proper degree of crystallinity by having a range of density proposed in the present invention.
또한, 본 발명 수지의 용융지수(MI)가 0.3g/10min 미만인 경우에는 수지의 유동성이 저하되어 작업이 어렵고, 30g/10min을 초과하는 경우에는 수득된 성형품의 강도, 신장율, 내충격성, 내마모성 등이 저하되어 바람직하지 않다.In addition, when the melt index (MI) of the resin of the present invention is less than 0.3g / 10min, the fluidity of the resin is lowered, so that the work is difficult, and when it exceeds 30g / 10min, the strength, elongation, impact resistance, abrasion resistance, etc. of the obtained molded article This lowers and is not preferable.
따라서, 본 발명에서 제시되어 있는 용융지수를 갖는 수지를 사용함으로서 최종제품의 성형성이 향상되고 표면광택이 우수한 제품을 수득할 수 있게 된다.Therefore, by using the resin having a melt index proposed in the present invention it is possible to improve the moldability of the final product and to obtain a product having excellent surface gloss.
본 발명의 폴리올레핀 조성물을 팽창시키기 위해 사용되는 발포제는 아조디카르본아미드(azodicarbonamide, ADCA) 등의 아조계 화합물, 디니트로소펜타메틸테트라아민(dinitroxo penta-methyl tetra-amine, DPT) 등의 니트로소계 화합물, 아조비스이소부틸니트릴(azobisiso-butyl nitrile, ABBN), p-톨루엔설포닐히드라지드(p-tolune sulfonyl hydrazid, TSH) 등을 폴리올레핀 조성물 100 중량부에 대하여 0.5∼30 중량부를 사용하는데, 가장 바람직한 것은 아조계인 아조디카본아미드로서 분해온도가 150∼250℃이며 가스발생량이 150∼280g/㏄인 것이다.The blowing agent used to expand the polyolefin composition of the present invention is azo-based compound such as azodicarbonamide (ADCA), nitroso-based such as dinitroxo penta-methyl tetra-amine (DPT) The compound, azobisisobutyl nitrile (ABBN), p-tolune sulfonyl hydrazid (TSH), and the like are used in an amount of 0.5 to 30 parts by weight based on 100 parts by weight of the polyolefin composition. Preferred are azo dicarbonamides having an decomposition temperature of 150 to 250 캜 and a gas generation amount of 150 to 280 g / cc.
이 때, 가교제의 함량이 0.1 중량부 미만인 경우에는 가교 겔(gel)%가 낮아 발포가 불량하게 되고, 5 중량부를 초과하는 경우에는 발포체 성형시에 표면이 터지며 성형자체가 어렵게 된다.In this case, when the content of the crosslinking agent is less than 0.1 part by weight, the crosslinked gel (gel)% is low, and the foaming is poor. When the content of the crosslinking agent is more than 5 parts by weight, the surface bursts during foam molding, and the molding itself becomes difficult.
본 발명에 있어서 사용가능한 가교 방법으로는 조성물에 유기과산화물을 첨가하고 가열하여 자유라디칼을 생성시키는 화학적 가교법과 조성물에 다관능성 화합물 및 일관능성 모노머를 첨가하고 전자선을 조사하는 전자선 가교법을 들 수 있다.Examples of the crosslinking method usable in the present invention include a chemical crosslinking method in which an organic peroxide is added to the composition and heated to generate free radicals, and an electron beam crosslinking method in which a polyfunctional compound and a monofunctional monomer are added to the composition and irradiated with an electron beam. .
상기 가교 방법 중 화학적 가교법을 실시할 때에는 디큐밀퍼옥사이드(DCP), t-부틸퍼옥시라우릴레이트, t-디부틸퍼옥시말레인산, t-부틸히드로퍼옥사이드, 2,5-디메틸-2,5-디(t-부틸퍼옥시)핵산, 디-t-부틸퍼옥사이드 및 1,3-비스(t-부틸퍼옥시이소프로필렌)벤젠 등의 유기과산화물을 첨가하는데, 가장 바람직한 것은 디쿠밀퍼옥사이드(dicumylperoxide, DCP)를 폴리올레핀 수지 100 중량부에 대하여 0.1∼5 중량부 첨가하는 것이며, 전자선 가교법을 실시할 때에는 가교제를 첨가하지 않는다.When performing the chemical crosslinking method among the crosslinking methods, dicumyl peroxide (DCP), t-butylperoxylaurylate, t-dibutylperoxymaleic acid, t-butylhydroperoxide, 2,5-dimethyl-2, Organic peroxides such as 5-di (t-butylperoxy) nucleic acid, di-t-butylperoxide and 1,3-bis (t-butylperoxyisopropylene) benzene are added, most preferably dicumylperoxide ( 0.1-5 weight part of dicumylperoxide (DCP) is added with respect to 100 weight part of polyolefin resins, and a crosslinking agent is not added when carrying out an electron beam crosslinking method.
본 발명의 실시에 있어서 기본 구성성분은 아니나 필요에 따라 충진제인 탄산칼슘, 탄산마그네슘, 황산바륨, 카본 화이트, 발포 및 가교 분해 촉진조제인 산화아연, 백색도를 향상시키기 위한 이산화티타늄, 이형 및 분산을 용이하게 하기 위해 사용되는 스테아린산, 형광제, 안정제, 색소 등의 첨가제가 1 내지 20 중량부 범위내에서 선택되어 첨가될 수 있다.In the practice of the present invention, the filler is calcium carbonate, magnesium carbonate, barium sulfate, carbon white, zinc oxide, a foaming and crosslinking accelerator, and titanium dioxide, mold release and dispersion for improving whiteness, if necessary. Additives such as stearic acid, fluorescent agents, stabilizers, pigments, etc. used to facilitate may be selected and added within the range of 1 to 20 parts by weight.
또한, 본 발명에서는 종래의 신발 밑창에서 요구되는 물성 외에 세균번식을 억제하고, 땀, 악취 등을 흡수제거할 수 있도록 탄소결정체인 숯이 첨가되는데, 상기 숯은 산화와 부패를 막고 신선한 상태를 유지시켜 주는 음이온과 세포를 활성화시켜 신진대사 등 생리작용을 촉진시키고 유해물질을 제거시키는 원적외선을 방출하며 강한 흡착력을 발취하는 다공성 물질로서 분말 형태로 폴리올레핀 조성물 100 중량부에 대하여 0.5∼50 중량부가 첨가된다.In addition, in the present invention, in addition to the physical properties required in the shoe sole of the prior art, it is added to the charcoal carbon crystals to suppress the growth of bacteria, to absorb and remove sweat, odors, etc. The charcoal prevents oxidation and decay and maintains a fresh state It is a porous material that activates anion and cells to promote metabolism such as metabolism, removes harmful substances, activates cells, and extracts strong adsorption, and adds 0.5 ~ 50 parts by weight to 100 parts by weight of polyolefin composition in powder form. .
이 때, 숯 분말의 첨가량이 0.5 중량부 미만인 경우에는 숯을 첨가함으로서 발휘되는 효과가 부족하고 50 중량부를 초과하는 경우에는 과다한 숯의 첨가로 발포체의 충격강도, 인장강도 등 기계적 물성이 저하되는 단점이 있어 바람직하지 못하다.At this time, when the amount of the charcoal powder is less than 0.5 parts by weight, the effect exerted by the addition of charcoal is insufficient, and when it exceeds 50 parts by weight, the mechanical properties such as impact strength and tensile strength of the foam are lowered by the addition of excessive charcoal. This is undesirable.
이하, 본 발명에 의한 조성물을 이용하여 신발 안창이나 중창용으로 사용하기 위한 발포체의 제조방법을 설명하면 다음과 같다.Hereinafter, the manufacturing method of the foam for use for shoe insole or midsole using the composition according to the present invention.
본 발명의 조성물을 구성하는 저밀도폴리에틸렌 수지 100 중량부에 대하여 발포제 0.5∼30 중량부, 가교제 0.1∼5 중량부, 숯 분말 0.5∼50 중량부를 발포제 및 가교제의 분해온도 이하에서 혼합기를 이용하여 용융상태로 배합시킨 후 배합된조성물을 특수 압출기를 이용하여 솔리드 쉬트(solid sheet)로 성형시킨 다음 발포오븐에서 발포시켜 발포체를 얻는다.0.5 to 30 parts by weight of foaming agent, 0.1 to 5 parts by weight of crosslinking agent, and 0.5 to 50 parts by weight of charcoal powder based on 100 parts by weight of the low density polyethylene resin constituting the composition of the present invention in a molten state by using a mixer below the decomposition temperature of the foaming agent and the crosslinking agent. After mixing, the blended composition is molded into a solid sheet using a special extruder and then foamed in a foam oven to obtain a foam.
이 때, 바람직한 압출온도는 90∼130℃이며, 발포온도는 190∼260℃이다.At this time, preferable extrusion temperature is 90-130 degreeC, and foaming temperature is 190-260 degreeC.
상기와 같이 제조되는 본 발명의 조성물로부터 얻어지는 발포체는 천 또는 부직포를 점착(dry-laminate) 또는 열융착(frame-laminate)시켜 진공성형 또는 열압착성형함으로써 신발용 깔창(insole), 중창(midsole), 전면·후면·측면 가피 또는 보강재, 안감 등 용도에 따라 다양하게 사용될 수 있다.Foam obtained from the composition of the present invention prepared as described above is a shoe insole, midsole (midsole) by vacuum or thermocompression molding by dry-laminate or frame-laminate cloth or nonwoven fabric It can be used in various ways depending on the application such as front, rear and side skin or reinforcement and lining.
이하 본 발명을 실시예를 들어 상세히 설명하고자 하나, 본 발명이 기술된 실시예에 제한되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to the described embodiments.
실시예 1Example 1
에틸렌비닐아세테이트 수지(EVA) 66.55 중량부와 저밀도 폴리에틸렌(LDPE) 33.45 중량부와 발포제 아조디카르본아미드 3.16 중량부와 가교제 디쿠밀퍼옥사이드 1.26 중량부와 숯 분말 10 중량부를 화학적 가교법을 실시하여 90∼110℃ 온도의 압출기에서 솔리드 쉬트(solid sheet)로 성형시킨 후 특수발포오븐을 이용하여 발포온도 180∼240℃에서 발포시켜 두께 2∼5㎜의 발포체를 제조하였다.66.55 parts by weight of ethylene vinyl acetate resin (EVA), 33.45 parts by weight of low density polyethylene (LDPE), 3.16 parts by weight of blowing agent azodicarbonamide, 1.26 parts by weight of crosslinking agent dicumyl peroxide and 10 parts by weight of charcoal powder were subjected to chemical crosslinking. A foam having a thickness of 2 to 5 mm was prepared by forming a solid sheet in an extruder having a temperature of 110 ° C. and then foaming at a foaming temperature of 180 to 240 ° C. using a special foam oven.
실시예 2Example 2
에틸렌비닐아세테이트 수지(EVA) 70 중량부와 선형 저밀도 폴리에텔렌(LLDPE) 30 중량부와 발포제 아조디카르본아미드 9 중량부와 가교제 디쿠밀퍼옥사이드 0.8 중량부와 숯 분말 20 중량부 및 탄산칼슘 20 중량부, 스테아린산 1 중량부를 화학적 가교법을 실시하여 90∼110℃ 온도의 압출기에서 솔리드 쉬트(solid sheet)로 성형시킨 후 특수 발포오븐을 이용하여 발포온도 180∼250℃로 발포시켜 두께 2∼5㎜의 발포체를 제조하였다.70 parts by weight of ethylene vinyl acetate resin (EVA), 30 parts by weight of linear low density polyetherene (LLDPE), 9 parts by weight of blowing agent azodicarbonamide, 0.8 parts by weight of crosslinker dicumyl peroxide, 20 parts by weight of charcoal powder and 20 parts by weight of calcium carbonate 1 part by weight of stearic acid was chemically crosslinked to form a solid sheet in an extruder at a temperature of 90 to 110 ° C., and then foamed to a foam temperature of 180 to 250 ° C. using a special foam oven to be 2 to 5 mm thick. Foam was prepared.
실시예 3Example 3
에틸렌비닐아세테이트 수지(EVA) 60 중량부와 선형 저밀도 폴리에틸렌(LLDPE) 30 중량부와 저밀도 폴리에틸렌(LDPE) 10 중량부와 발포제 아조디카르본아미드 4 중량부와 숯 분말 5 중량부 및 스테아린산 2 중량부를 95∼113℃ 온도의 압출기에서 성형시켜 되는 솔리드 쉬트(solid sheet)에 4∼8 Mrad의 전자선을 조사하여 가교시킨 솔리드 쉬트(solid sheet)를 특수 발포오븐(발포온도 200∼240℃)에서 발포시켜 두께 2∼5㎜의 발포제품을 제조하였다.60 parts by weight of ethylene vinyl acetate resin (EVA), 30 parts by weight of linear low density polyethylene (LLDPE), 10 parts by weight of low density polyethylene (LDPE), 4 parts by weight of blowing agent azodicarbonamide, 5 parts by weight of charcoal powder and 2 parts by weight of stearic acid 95 The solid sheet formed by the extruder at a temperature of ˜113 ° C. was crosslinked by irradiation with an electron beam of 4 to 8 Mrad, and then foamed in a special foam oven (foaming temperature 200 to 240 ° C.). A foamed product of 2 to 5 mm was prepared.
실시예 4Example 4
에틸렌비닐아세테이트 수지(EVA) 66.55 중량부와 저밀도 폴리에틸렌(LDPE) 33.45 중량부와 발포제 아조디카르본아미드 3.16 중량부와 가교제 디쿠밀퍼옥사이드 1.26 중량부와 숯 분말 10 중량부를 화학적 가교법을 실시하여 90∼110℃ 온도의 압출기에서 용융상태로 배합시킨 후 배합된 조성물을 가압 프레스를 이용하여 발포온도 180∼240℃로 팽창시켜 두께 2∼5㎜의 발포체를 제조하였다.66.55 parts by weight of ethylene vinyl acetate resin (EVA), 33.45 parts by weight of low density polyethylene (LDPE), 3.16 parts by weight of blowing agent azodicarbonamide, 1.26 parts by weight of crosslinking agent dicumyl peroxide and 10 parts by weight of charcoal powder were subjected to chemical crosslinking. After blending in a molten state in an extruder at a temperature of 110 ° C, the blended composition was expanded to a foaming temperature of 180 to 240 ° C using a pressure press to prepare a foam having a thickness of 2 to 5 mm.
실시예 5Example 5
에틸렌비닐아세테이트 수지(EVA) 70 중량부와 선형 저밀도 폴리에텔렌(LLDPE) 30 중량부와 발포제 아조디카르본아미드 9 중량부와 가교제 디쿠밀퍼옥사이드 0.8 중량부와 숯 분말 20 중량부 및 탄산칼슘 20 중량부, 스테아린산 1 중량부를 화학적 가교법을 실시하여 90∼110℃ 온도의 압출기에서 용융상태로배합시킨 후 배합된 조성물을 가압 프레스를 이용하여 발포온도 140∼180℃로 팽창시켜 두께 2∼5㎜의 발포체를 제조하였다.70 parts by weight of ethylene vinyl acetate resin (EVA), 30 parts by weight of linear low density polyetherene (LLDPE), 9 parts by weight of blowing agent azodicarbonamide, 0.8 parts by weight of crosslinker dicumyl peroxide, 20 parts by weight of charcoal powder and 20 parts by weight of calcium carbonate 1 part by weight of stearic acid was chemically crosslinked to mix in a molten state in an extruder at a temperature of 90 to 110 ° C., and then the blended composition was expanded to a foam temperature of 140 to 180 ° C. using a pressure press to obtain a thickness of 2 to 5 mm. Foams were prepared.
실시예 6Example 6
에틸렌비닐아세테이트 수지(EVA) 60 중량부와 선형 저밀도 폴리에틸렌(LLDPE) 30 중량부와 저밀도 폴리에틸렌(LDPE) 10 중량부와 발포제 아조디카르본아미드 4 중량부와 숯 분말 5 중량부 및 스테아린산 2 중량부를 4∼6M RAD의 방선선을 조사하여 95∼113℃ 온도의 압출기에서 용융상태로 배합시킨 후 배합된 조성물을 가압 프레스를 이용하여 발포온도 200∼240℃로 팽창시켜 두께 2∼5㎜의 발포체를 제조하였다.60 parts by weight of ethylene vinyl acetate resin (EVA), 30 parts by weight of linear low density polyethylene (LLDPE), 10 parts by weight of low density polyethylene (LDPE), 4 parts by weight of blowing agent azodicarbonamide, 5 parts by weight of charcoal powder and 2 parts by weight of stearic acid 4 After irradiating the radiation of ˜6M RAD and mixing in a molten state in an extruder at a temperature of 95-113 ° C., the blended composition was expanded to a foaming temperature of 200-240 ° C. using a pressure press to prepare a foam having a thickness of 2-5 mm. It was.
비교예 1Comparative Example 1
에틸렌비닐아세테이트(EVA) 100 중량부, 아조디카르본아미드 9 중량부, 디쿠밀퍼옥사이드 0.8 중량부, 탄산칼슘 20 중량부, 스테아린산 1 중량부를 화학적 가교법을 실시하여 90∼110℃ 온도의 압출기에서 용융상태로 배합시킨 후 배합된 조성물을 가압 프레스를 이용하여 발포온도 140∼180℃로 팽창시켜 발포체를 제조하였다.100 parts by weight of ethylene vinyl acetate (EVA), 9 parts by weight of azodicarbonamide, 0.8 part by weight of dicumyl peroxide, 20 parts by weight of calcium carbonate, and 1 part by weight of stearic acid were melted in an extruder at a temperature of 90 to 110 ° C. After blending in a state, the blended composition was expanded to a foaming temperature of 140 to 180 ° C. using a pressure press to prepare a foam.
상기 실시예 1 내지 3 및 비교예 1에 의해 제조된 발포체 조성물을 신발 안창으로 성형한 후 물성을 측정하여 표 1에 나타내었다.The foam compositions prepared according to Examples 1 to 3 and Comparative Example 1 were molded into shoe insoles, and then physical properties thereof were measured and shown in Table 1 below.
본 발명 신발용 폴리올레핀 발포 조성물은 상기 표 1에 나타난 바와 같이 비교예 1과 대비하였을 때 신발용 발포 조성물로서의 중요한 물성인 비중, 경도, 인장강도, 신율, 파열인열강도 및 영구압축율 등이 매우 우수할 뿐만 아니라, 인체에 활력을 주는 음이온과 세포를 활성화시켜 생리작용을 촉진시키는 원적외선을 방출하고 강력한 흡착력을 갖는 숯의 효능이 최대로 발휘될 수 있는 최적의 상태로 제조되어 발의 혈액순환을 원활하게 하고 신발내의 세균번식을 억제하며 땀, 악취 등을 흡수 제거하는 효과가 뛰어나므로 신발용 깔창(insole), 중창(midsole), 전면·후면·측면 가피 또는 보강재, 안감 등에 다양하게 사용될 수 있다.Polyolefin foam composition for footwear of the present invention is very excellent in specific properties, specific gravity, hardness, tensile strength, elongation, tear tear strength and permanent compression rate, etc., which are important physical properties as foam composition for shoes as shown in Table 1 above In addition, it activates negative ions and cells that energize the human body to release far-infrared rays that promote physiological effects, and is manufactured in an optimal state to maximize the efficacy of charcoal with strong adsorption power. In addition, it suppresses the growth of bacteria in shoes and absorbs and removes sweat and odors. Therefore, it can be used in various ways such as insole, midsole, front, rear, side skin or reinforcement and lining.
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Cited By (7)
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| KR20010056212A (en) * | 1999-12-17 | 2001-07-04 | 김종목 | bubbling frame and manufacture method |
| KR20030026374A (en) * | 2001-09-06 | 2003-04-03 | 통일공업 주식회사 | cross foam polyolefine composition for shoes |
| KR20030046996A (en) * | 2001-12-07 | 2003-06-18 | 남상국 | Charcoal powder added foam and buff material using thereof |
| WO2003076504A1 (en) * | 2002-03-08 | 2003-09-18 | Ho Sam Park | Eva polymer comprising charcoal and method to manufacture the said eva polymer |
| KR101875883B1 (en) * | 2016-10-28 | 2018-07-06 | (주)타이리젠 | Foam composition of low density resins |
| CN108559170A (en) * | 2018-05-11 | 2018-09-21 | 芜湖风雪橡胶有限公司 | Eva shoe material masterbatch and preparation method thereof |
| CN108586904A (en) * | 2018-05-11 | 2018-09-28 | 芜湖风雪橡胶有限公司 | EVA shoe material expanded material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030062936A (en) * | 2002-01-21 | 2003-07-28 | 김완수 | Footgear phylon making memhod by solid seet |
| KR100747084B1 (en) | 2005-11-16 | 2007-08-07 | 학교법인 동서학원 | dustproof shoe with electric conducting outsole |
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1999
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010056212A (en) * | 1999-12-17 | 2001-07-04 | 김종목 | bubbling frame and manufacture method |
| KR20030026374A (en) * | 2001-09-06 | 2003-04-03 | 통일공업 주식회사 | cross foam polyolefine composition for shoes |
| KR20030046996A (en) * | 2001-12-07 | 2003-06-18 | 남상국 | Charcoal powder added foam and buff material using thereof |
| WO2003076504A1 (en) * | 2002-03-08 | 2003-09-18 | Ho Sam Park | Eva polymer comprising charcoal and method to manufacture the said eva polymer |
| KR101875883B1 (en) * | 2016-10-28 | 2018-07-06 | (주)타이리젠 | Foam composition of low density resins |
| CN108559170A (en) * | 2018-05-11 | 2018-09-21 | 芜湖风雪橡胶有限公司 | Eva shoe material masterbatch and preparation method thereof |
| CN108586904A (en) * | 2018-05-11 | 2018-09-28 | 芜湖风雪橡胶有限公司 | EVA shoe material expanded material and preparation method thereof |
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|---|---|
| KR100358073B1 (en) | 2002-10-25 |
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