JPH01274702A - Injection mold composition for foaming sole - Google Patents
Injection mold composition for foaming soleInfo
- Publication number
- JPH01274702A JPH01274702A JP63106475A JP10647588A JPH01274702A JP H01274702 A JPH01274702 A JP H01274702A JP 63106475 A JP63106475 A JP 63106475A JP 10647588 A JP10647588 A JP 10647588A JP H01274702 A JPH01274702 A JP H01274702A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- weight
- sole
- copolymer resin
- foaming agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 21
- 238000002347 injection Methods 0.000 title description 5
- 239000007924 injection Substances 0.000 title description 5
- 238000005187 foaming Methods 0.000 title description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001746 injection moulding Methods 0.000 claims abstract description 11
- 239000004014 plasticizer Substances 0.000 claims abstract description 10
- KRGNPJFAKZHQPS-UHFFFAOYSA-N chloroethene;ethene Chemical compound C=C.ClC=C KRGNPJFAKZHQPS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 229920000642 polymer Polymers 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims description 28
- 239000011347 resin Substances 0.000 claims description 28
- 239000004604 Blowing Agent Substances 0.000 claims description 12
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 claims description 7
- 229920001038 ethylene copolymer Polymers 0.000 claims description 6
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000004088 foaming agent Substances 0.000 abstract description 7
- 229920006026 co-polymeric resin Polymers 0.000 abstract description 4
- 239000004156 Azodicarbonamide Substances 0.000 abstract description 3
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 abstract description 3
- 235000019399 azodicarbonamide Nutrition 0.000 abstract description 3
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 abstract description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001577 copolymer Polymers 0.000 abstract description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 abstract 2
- 238000000354 decomposition reaction Methods 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 abstract 1
- 235000017557 sodium bicarbonate Nutrition 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 10
- 230000007423 decrease Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 239000012778 molding material Substances 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 description 2
- JQCXWCOOWVGKMT-UHFFFAOYSA-N diheptyl phthalate Chemical compound CCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC JQCXWCOOWVGKMT-UHFFFAOYSA-N 0.000 description 2
- MGWAVDBGNNKXQV-UHFFFAOYSA-N diisobutyl phthalate Chemical compound CC(C)COC(=O)C1=CC=CC=C1C(=O)OCC(C)C MGWAVDBGNNKXQV-UHFFFAOYSA-N 0.000 description 2
- KZTYYGOKRVBIMI-UHFFFAOYSA-N diphenyl sulfone Chemical compound C=1C=CC=CC=1S(=O)(=O)C1=CC=CC=C1 KZTYYGOKRVBIMI-UHFFFAOYSA-N 0.000 description 2
- CQSQUYVFNGIECQ-UHFFFAOYSA-N 1-n,4-n-dimethyl-1-n,4-n-dinitrosobenzene-1,4-dicarboxamide Chemical compound O=NN(C)C(=O)C1=CC=C(C(=O)N(C)N=O)C=C1 CQSQUYVFNGIECQ-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- VOWAEIGWURALJQ-UHFFFAOYSA-N Dicyclohexyl phthalate Chemical compound C=1C=CC=C(C(=O)OC2CCCCC2)C=1C(=O)OC1CCCCC1 VOWAEIGWURALJQ-UHFFFAOYSA-N 0.000 description 1
- ZVFDTKUVRCTHQE-UHFFFAOYSA-N Diisodecyl phthalate Chemical compound CC(C)CCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC(C)C ZVFDTKUVRCTHQE-UHFFFAOYSA-N 0.000 description 1
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical class Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- -1 Phthalate ester Chemical class 0.000 description 1
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- VJRITMATACIYAF-UHFFFAOYSA-N benzenesulfonohydrazide Chemical compound NNS(=O)(=O)C1=CC=CC=C1 VJRITMATACIYAF-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 description 1
- 229960001826 dimethylphthalate Drugs 0.000 description 1
- DROMNWUQASBTFM-UHFFFAOYSA-N dinonyl benzene-1,2-dicarboxylate Chemical compound CCCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCCC DROMNWUQASBTFM-UHFFFAOYSA-N 0.000 description 1
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 description 1
- XWVQUJDBOICHGH-UHFFFAOYSA-N dioctyl nonanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCC(=O)OCCCCCCCC XWVQUJDBOICHGH-UHFFFAOYSA-N 0.000 description 1
- YCZJVRCZIPDYHH-UHFFFAOYSA-N ditridecyl benzene-1,2-dicarboxylate Chemical compound CCCCCCCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCCCCCCC YCZJVRCZIPDYHH-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- ALIFPGGMJDWMJH-UHFFFAOYSA-N n-phenyldiazenylaniline Chemical compound C=1C=CC=CC=1NN=NC1=CC=CC=C1 ALIFPGGMJDWMJH-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical class [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、発泡靴底射出成形組成物に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) This invention relates to a foamed shoe sole injection molding composition.
（従来の技術） 従来、塩化ビニル樹脂１００重量部に対して。(Conventional technology) Conventionally, for 100 parts by weight of vinyl chloride resin.
アゾジカルボンアミド等の熱分解型有機発泡剤を０．２
〜２．０重量部を添加したものを主成分とする発泡靴底
射出成形組成物は一般に周知である。しかしながら、こ
れらの組成物で射出成形された発泡靴底は内部気泡は均
一であるが発泡靴底の充実な表層、即ちスキン層が薄く
、その表面に鮮明な凹凸意匠を成形できない欠点があり
、しかも物性的に耐摩耗性。0.2 pyrolyzable organic blowing agent such as azodicarbonamide
Foamed shoe sole injection molding compositions based on additives of up to 2.0 parts by weight are generally well known. However, although the foamed shoe soles injection-molded with these compositions have uniform internal cells, the solid surface layer of the foamed shoe sole, that is, the skin layer, is thin and has the disadvantage that a clear uneven design cannot be formed on the surface. Moreover, it is physically wear resistant.
耐屈曲性、引張り強度等の機械的強度が不足し、またこ
れらの組成物を多層靴底またはダイレクト靴底の成形に
利用した場合、成形される靴底のスキン層が薄いため、
他の靴底部分または胛被に対する接着性が著しく低下す
る欠点があった。Mechanical strengths such as bending resistance and tensile strength are insufficient, and when these compositions are used to mold multilayer soles or direct soles, the skin layer of the molded sole is thin.
This has the disadvantage that adhesion to other shoe soles or shoe covers is significantly reduced.
（発明の解決しようとする問題点）
この発明は、これらの欠点を除去し、スキン層が厚く内
部気泡がスキン層に向って密で耐摩耗性、耐屈曲性、引
張り強度等の機械的強度に優れ、その表面に鮮明な凹凸
意匠を成形した発泡靴底を提供し、さらにこれを多ｍ靴
底またはダイレクト成形の靴底に使用した場合、他の靴
底部分または胛被との接着性に優れた発泡靴底を提供し
ようとするものである。(Problems to be Solved by the Invention) This invention eliminates these drawbacks, and has a thick skin layer with dense internal air bubbles toward the skin layer, which improves mechanical strength such as abrasion resistance, bending resistance, and tensile strength. We provide a foamed shoe sole with excellent surface texture and a clear uneven design, and when used as a multi-meter shoe sole or direct molded shoe sole, it has excellent adhesion to other shoe sole parts or shoe covers. The aim is to provide an excellent foam sole for the market.
（問題点を解決するための手段）
この発明は、塩化ビニル樹脂および／または塩化ビニル
エチレン共重合体樹脂と塩化ビニル酢酸ビニル共重合体
樹脂との配合重量比が３０：７０〜８０：２０の混合ポ
リマー１００重量部に対して可塑剤５０〜１００重量部
と熱分解型有機発泡剤０．１〜２．０重量部と熱分解型
無機発泡剤０゜５〜５．０重量部とを添加したことを特
徴とする発泡靴底射出成形組成物を発明の要旨とするも
のである。(Means for Solving the Problems) This invention provides that the blending weight ratio of vinyl chloride resin and/or vinyl chloride ethylene copolymer resin and vinyl chloride vinyl acetate copolymer resin is 30:70 to 80:20. Add 50 to 100 parts by weight of a plasticizer, 0.1 to 2.0 parts by weight of a thermally decomposable organic blowing agent, and 0.5 to 5.0 parts by weight of a thermally decomposable inorganic foaming agent to 100 parts by weight of the mixed polymer. The gist of the invention is a foamed shoe sole injection molding composition characterized by the following characteristics.
この発明に使用される塩化ビニル樹脂（ストレートレジ
ン）の平均重合度は５００−１５００が。The average degree of polymerization of the vinyl chloride resin (straight resin) used in this invention is 500-1500.
塩化ビニルエチレン共重合体樹脂、塩化ビニル酢酸ビニ
ル共重合体樹脂（コポリ−マレジン）の平均重合度は４
３０〜１７００がそれぞれ好ましい。それぞれの平均重
合度がそれ以下となれば得られる靴底の耐摩耗性、耐屈
曲性。The average degree of polymerization of vinyl chloride ethylene copolymer resin and vinyl chloride vinyl acetate copolymer resin (copoly-maresin) is 4.
30 to 1700 are preferable. The abrasion resistance and bending resistance of the shoe sole that can be obtained if the average degree of polymerization of each is lower than that.
引張り強度等の機械的強度が低下するきらいがある。ま
た平均重合度それ以上となれば成形時の流動性が低下し
、モールドキャビティに対する靴底成形材の充填不足の
原因となり、従ってこのようにして成形された靴底は意
匠面が欠けたり、その表面にひげやフローマークが形成
され、その外観または靴底としての柔軟性が低下するき
らいがある。Mechanical strength such as tensile strength tends to decrease. Furthermore, if the average degree of polymerization is higher than this, the fluidity during molding will decrease, causing insufficient filling of the sole molding material into the mold cavity. Whiskers and flow marks are formed on the surface, which tends to reduce the appearance and flexibility of the shoe sole.
そしてこの発明に使用される塩化ビニル酢酸ビニル共重
合体樹脂としては酢酸ビニルの含有率は５〜２０％のも
のが好ましい。酢酸ビニルの含有率がそれ以下となれば
靴底射出成形時における靴底成形材料の流動性が低下し
、成形される靴の靴底の表面にひげやフローマークが形
成され、得られる靴底の外観が低下するきらいがあり、
また酢酸ビニルの含有率がそれ以上となれば靴底射出成
形時における靴底成形材料の流動性が良くなり過ぎ、成
形型の嵌合部にパリが発生し易くなるきらいがある。こ
の発明において塩化ビニル樹脂および／または塩化ビニ
ルエチレン共重合体樹脂と塩化ビニル酢酸ビニル共重合
体樹脂との配合重量比を３０：７０〜８０：２０に限定
したのは、塩化ビニル酢酸ビニル共重合体樹脂の配合重
量比がそれ以下となれば靴底射出成形時における靴底成
形材料の流動性が低下し、成形される靴底の表面にひけ
やフローマークが形成され、得られる靴底の外観が低下
し、また多層靴底またはダイレクト成形の靴底に使用し
た場合、他の靴底部分または胛被との接着性が低下する
欠点があり、また塩化ビニル酢酸ビニル共重合体樹脂の
配合重量比がそれ以上となれば靴底射出成形時における
靴底成形材料の流動性が良くなりすぎ、成形型の嵌合部
にパリが発生する欠点があるからであるにの発明におい
て、混合ポリマーを塩化ビニル樹脂と塩化ビニルエチレ
ン共重合体樹脂と塩化ビニル酢酸ビニル共重合体樹脂と
の３成分の混合体で構成することによって、成形時の流
動性と得られる靴底の耐摩耗性、耐屈曲性の引張り強度
並びにゴム弾性を一層良好なものとすることが出来る。The vinyl chloride/vinyl acetate copolymer resin used in this invention preferably has a vinyl acetate content of 5 to 20%. If the content of vinyl acetate is lower than this, the fluidity of the sole molding material during shoe sole injection molding will decrease, and whiskers and flow marks will be formed on the surface of the shoe sole to be molded, resulting in the resulting shoe sole It tends to deteriorate the appearance of
Furthermore, if the content of vinyl acetate is higher than that, the fluidity of the sole molding material during sole injection molding becomes too good, and there is a tendency for flakes to occur at the fitting portion of the mold. In this invention, the blending weight ratio of vinyl chloride resin and/or vinyl chloride ethylene copolymer resin and vinyl chloride vinyl acetate copolymer resin is limited to 30:70 to 80:20. If the blending weight ratio of the combined resin is less than that, the fluidity of the sole molding material during sole injection molding will decrease, and sink marks and flow marks will be formed on the surface of the molded sole, resulting in poor quality of the resulting shoe sole. The appearance deteriorates, and when used in multilayer soles or directly molded soles, the adhesion to other sole parts or shoe covers decreases. If the weight ratio is higher than that, the fluidity of the sole molding material during shoe sole injection molding will be too good, resulting in the formation of cracks at the fitting part of the mold. By composing it with a three-component mixture of vinyl chloride resin, vinyl chloride ethylene copolymer resin, and vinyl chloride vinyl acetate copolymer resin, fluidity during molding and abrasion resistance of the resulting shoe sole are improved. Flexible tensile strength and rubber elasticity can be further improved.
そして、この発明に使用される可塑剤としては、通常塩
化ビニル樹脂に使用されるものであって、ジオクチルフ
タレート、ジメチルフタレート、ジエチルフタレート、
ジイソブチルフタレート、ジブチルフタレート、ジヘプ
チルフタレート、ジノニルフタレート、ジイソデシルフ
タレート、ジトリデシルフタレート、ジシクロへキシル
フタレート等のフタル酸エステル系の可塑剤、ジオクチ
ルアジペート、ジオクチルアゼレート、ジオクチルセバ
ケート等の直鎖＝塩酸エステル類、トリクレジルホスフ
ェート、トリキシレニルホスフェート等のリン酸エステ
ル類、ヒマシ浦誘導体。The plasticizers used in this invention are those normally used for vinyl chloride resins, such as dioctyl phthalate, dimethyl phthalate, diethyl phthalate,
Phthalate ester plasticizers such as diisobutyl phthalate, dibutyl phthalate, diheptyl phthalate, dinonyl phthalate, diisodecyl phthalate, ditridecyl phthalate, dicyclohexyl phthalate, linear chains such as dioctyl adipate, dioctyl azelate, dioctyl sebacate, etc. Hydrochloric acid esters, phosphoric acid esters such as tricresyl phosphate and tricylenyl phosphate, and castor derivatives.
エポキシ化植物油、ポリエステル系可塑剤等の可塑剤の
単独または２種以上を組み合わせたものが使用される。Plasticizers such as epoxidized vegetable oil and polyester plasticizers may be used alone or in combination of two or more.
そして可塑剤の添加量を、混合ポリマー１００重量部に
対して、５０〜１００重量部に限定したのは、添加量が
それ以上になれば、成形された発泡靴底は硬度が低下し
、機械的強度が低下するばかりではなく、高温で異常に
軟くなり表面が粘性を帯び、靴底としては不適当となり
、また添加量がそれ以下となれば、硬くて柔軟性に欠け
、しかも耐衝撃性が著しく低下して、靴底として不適当
になるからである。The amount of plasticizer added was limited to 50 to 100 parts by weight per 100 parts by weight of the mixed polymer. Not only will the physical strength decrease, but the surface will become abnormally soft at high temperatures and become viscous, making it unsuitable for shoe soles.If the amount added is less than that, it will become hard, lack flexibility, and become impact resistant. This is because the properties of the material are significantly reduced, making it unsuitable for use as shoe soles.
更にこの発明に使用される熱分解型有機発泡剤としては
、アゾジカルボンアミド、アゾビスイソブチロニトリル
、ジアゾアミノベンゼン、Ｎ、Ｎ’ ジメチル−Ｎ、Ｎ
’ ジニトロソテレフタルアミド、Ｎ、Ｎ’ ジニトロ
ソペンタメチレンテトラミン、ベンゼンスルホニルヒド
ラジド、ベンゼン１．３ジスルホニルヒドラジド、ジフ
ェニルスルホン３．３′ジスルホニルヒドラジジド、４
．４′−オキシビス（ベンゼンスルホニルヒドラジド）
等の有機発泡剤が使用される。この発明において、有機
発泡剤の添加量を混合ポリマー１００重量部に対して、
０．１〜２．０重量部に限定したのは、添加量がそれ以
下となれば得られる靴底の発泡率が小さく、重量が重く
てクツション性に欠け、また、添加量がそれ以上となれ
ば発泡率が大きくなりすぎ得られる靴底の耐屈曲性、耐
摩耗性。Furthermore, the thermally decomposable organic blowing agents used in this invention include azodicarbonamide, azobisisobutyronitrile, diazoaminobenzene, N,N' dimethyl-N,N
'Dinitrosoterephthalamide, N,N' dinitrosopentamethylenetetramine, benzenesulfonylhydrazide, benzene 1.3disulfonylhydrazide, diphenylsulfone 3.3'disulfonylhydrazide, 4
．． 4'-oxybis(benzenesulfonylhydrazide)
Organic blowing agents such as In this invention, the amount of the organic blowing agent added is based on 100 parts by weight of the mixed polymer.
The reason for limiting the amount to 0.1 to 2.0 parts by weight is that if the amount added is less than that, the foaming rate of the resulting shoe sole will be low, it will be heavy and lack cushioning properties, and if the amount added is more than that If the foaming rate becomes too high, the sole will have better bending and abrasion resistance.
引張り強度等の機械的強度が低下し、しかも靴底成形後
の収縮率が大きくなり寸法安定性が悪くなる欠点がある
からである。This is because mechanical strength such as tensile strength decreases, and furthermore, the shrinkage rate after sole molding increases, resulting in poor dimensional stability.
この発明に使用される熱分解型無機発泡剤としては重炭
酸ナトリウム、重炭酸アンモニウム、炭酸アンモニウム
等の無機発泡剤が使用される。この発明において、無機
発泡剤の添加量を混合ポリマー１００重量部に対して０
．５〜５．０重量部に限定したのは、添加量がそれ以下
となれば、成形される発泡靴底のスキン層が薄くなりす
ぎ、その表面に鮮明な凹凸意匠を成形できない欠点があ
り、またこれを多層靴底またはダイレクト靴底の成形に
利用した場合、他の靴底部分または胛被に対する接着性
が低下する欠点があり、また添加量がそれ以上となれば
１発泡靴底の内部気泡が不均一で大きくなりすぎ耐屈曲
性、圧縮強度、寸法安定性が著しく低下し、靴底として
は不適となるからである。そしてこの発明において必要
によって発泡助剤、安定剤、充填剤、滑剤、着色剤等が
添加されてもよい。As the pyrolytic inorganic blowing agent used in this invention, inorganic blowing agents such as sodium bicarbonate, ammonium bicarbonate, and ammonium carbonate are used. In this invention, the amount of the inorganic blowing agent added is 0 to 100 parts by weight of the mixed polymer.
．． The reason for limiting the amount to 5 to 5.0 parts by weight is that if the amount added is less than that, the skin layer of the foamed shoe sole to be molded will become too thin, making it impossible to mold a clear uneven design on its surface. In addition, when this is used to mold multilayer soles or direct soles, there is a drawback that the adhesion to other sole parts or the soles is reduced, and if the amount added is more than that, the inside of the single foam sole This is because the bubbles become uneven and too large, resulting in a significant decrease in bending resistance, compressive strength, and dimensional stability, making it unsuitable for shoe soles. In this invention, foaming aids, stabilizers, fillers, lubricants, colorants, etc. may be added as necessary.
このようにして準備された各成分は、バンバリーミキサ
−、ヘンシェルミキサー、ミキシングロール、ニーダ−
等によって均一に混合されて、靴底射出成形組成物とし
て提供されるものである。Each component prepared in this way can be processed using a Banbury mixer, a Henschel mixer, a mixing roll, or a kneader.
etc., and provided as a shoe sole injection molding composition.
（作用効果） この発明は以上のように構成されているので。(effect) This invention is configured as described above.
組成物中の塩化ビニル酢酸ビニル共重合体樹脂が靴底射
出成形時における可塑化段階での組成物の流動性を著し
く改善し、可塑化シリンダー並びに射出ノズルでの組成
物の流動性が均一となり、靴底成形キャビティに対する
組成物の射出量を均一にすることができ、このため成形
された発泡靴底の表面にひげやフローマーク等が形成さ
れることがなく外観が良好である。またこの発明におい
て組成物中に熱分解型の有機発泡剤と熱分解型の無機発
泡剤を併用して添加したので、得られる発泡靴底のスキ
ン層が厚肉で、その内部気泡がスキン層に向って密な発
泡靴底を得ることができる。従って、発泡靴底表面に鮮
明な凹凸意匠を成形でき、しかも得られた発泡靴底は耐
摩耗性、耐屈曲性、引張り強度等の機械的強度に優れた
ものとすることができる。またこれを多層靴底またはダ
イレフ１−成形靴底の成形に使用した場合、厚肉なスキ
ン層を成形できるので、他の靴底部分または胛被との接
着性に優れた発泡靴底を得ることができる。The vinyl chloride vinyl acetate copolymer resin in the composition significantly improves the fluidity of the composition during the plasticization stage during shoe sole injection molding, and the fluidity of the composition in the plasticizing cylinder and injection nozzle becomes uniform. The amount of the composition injected into the sole molding cavity can be made uniform, and therefore the molded foamed sole does not have whiskers, flow marks, etc. on its surface and has a good appearance. In addition, in this invention, since a pyrolytic organic foaming agent and a pyrolytic inorganic foaming agent are added together to the composition, the skin layer of the resulting foamed shoe sole is thick, and the internal air bubbles in the skin layer are thick. You can get a dense foam sole. Therefore, a clear uneven design can be formed on the surface of the foamed shoe sole, and the resulting foamed shoe sole can have excellent mechanical strengths such as abrasion resistance, bending resistance, and tensile strength. In addition, when this is used to mold multilayer shoe soles or die reflex 1-molded shoe soles, a thick skin layer can be molded, resulting in a foamed shoe sole with excellent adhesion to other shoe sole parts or shoe covers. be able to.
実施例
第１表上段に示す塩化ビニル樹脂（ｐｖｃ樹脂？）８０
０）、または塩化ビニルエチレン共重合体樹脂（ＰＶＣ
／ＰＥ樹脂ｐ ａｏｏ）、塩化ビニル酢酸ビニル共重合
体樹脂（ＰＶＣ／ＶＡ樹脂Ｐ８００ 酢酸ビニル含有
率８％）、可塑剤、熱分解型有機発泡剤と熱分解型無機
発泡剤その他の配合薬品を添加したものをヘンシュルミ
キサ−で均−に混合した組成物を準備した。Example Vinyl chloride resin (PVC resin?) 80 shown in the upper row of Table 1
0), or vinyl chloride ethylene copolymer resin (PVC
/PE resin p aoo), vinyl chloride vinyl acetate copolymer resin (PVC/VA resin P800 vinyl acetate content 8%), plasticizer, pyrolytic organic blowing agent, pyrolytic inorganic blowing agent, and other compounded chemicals. A composition was prepared by uniformly mixing the added ingredients in a Henschel mixer.
そして底面に部分的にＰｖＣ樹脂とＰＶＣ／ＶＡ樹脂を
主成分とする接地底ａ′を成形セットし、しかも底面に
部分的に凹凸意匠１１を刻設したボトムモールド１とサ
イドモールド２．２と胛被５を吊込んだラスト３とによ
って形成されたミツドソール成形キャビティ４に上記に
よって準備された組成物を、常法によって射出ノズルの
温度１９０℃射出圧１５ｋｇ／ｃＪの条件で射出して、
これを発泡させて靴底面に部分的に凹凸意匠ｂ工を露出
させた発泡ミツドソールｂを成形すると同時にミツドソ
ールｂを介して接地底ａと胛被５とを接着させて、接地
底ａと発泡ミツドソールｂからなる多層靴底を成形した
。このようにして成形された発泡ミツドソールｂの機械
的強度、スキン層ｂ２の厚み、凹凸意匠ｂ１の外観、接
地底並びに胛被との接着性を、比較例によって同様にし
て成形された発泡ミツドソールと比較して第１表下段に
示す。A bottom mold 1 and a side mold 2.2 have a grounding sole a' mainly composed of PvC resin and PVC/VA resin partially molded and set on the bottom surface, and an uneven design 11 is partially engraved on the bottom surface. The composition prepared above was injected into the mid-sole molding cavity 4 formed by the last 3 with the sleeve 5 suspended therein by a conventional method at an injection nozzle temperature of 190° C. and an injection pressure of 15 kg/cJ.
This is foamed to form a foamed midsole b that partially exposes the uneven design B on the sole surface of the shoe, and at the same time, the grounding sole a and the cover 5 are adhered via the midsole b, and the grounding sole a and the foamed midsole are bonded together. A multilayer shoe sole consisting of B was molded. The mechanical strength of the foamed midsole b molded in this way, the thickness of the skin layer b2, the appearance of the uneven design b1, and the adhesion to the ground sole and the shoe cover were compared with those of the foamed midsole molded in the same manner as in the comparative example. A comparison is shown in the lower part of Table 1.
注２ ＪＩＳＫ６３０１による。 注５
ＪＩＳに６３０１による。Note 2 According to JISK6301. Note 5
According to JIS 6301.
注３ ＪＩＳＫ６３０１による。Note 3 Based on JISK6301.
図面はこの発明の組成物を使用して、発泡ミツドソール
を射出成形する状態を示す要部断面図である。
符号の説明
１、ボトムモールド １１・・・凹凸意匠２、サ
イドモールド ３．ラスト４、ミツドソール成形
キャビティ
５、胛被 ａ、接地底す、ミツドソー
ル ｂ工・・・凹凸意匠すよ・・・スキン層The drawing is a sectional view of a main part showing a state in which a foamed midsole is injection molded using the composition of the present invention. Explanation of symbols 1. Bottom mold 11... Uneven design 2. Side mold 3. Last 4, midsole molding cavity 5, cover a, ground sole, midsole b construction... uneven design... skin layer
Claims (1)
合体樹脂と塩化ビニル酢酸ビニル共重合体樹脂との配合
重量比が３０：７０〜８０：２０の混合ポリマー１００
重量部に対して可塑剤５０〜１００重量部と熱分解型有
機発泡剤０．１〜２．０重量部と熱分解型無機発泡剤０
．５〜５．０重量部とを添加したことを特徴とする発泡
靴底射出成形組成物。Mixed polymer 100 of vinyl chloride resin and/or vinyl chloride ethylene copolymer resin and vinyl chloride vinyl acetate copolymer resin in a blending weight ratio of 30:70 to 80:20
50 to 100 parts by weight of plasticizer, 0.1 to 2.0 parts by weight of pyrolytic organic blowing agent, and 0 part by weight of pyrolytic inorganic blowing agent.
．． 5 to 5.0 parts by weight of a foamed shoe sole injection molding composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63106475A JPH01274702A (en) | 1988-04-27 | 1988-04-27 | Injection mold composition for foaming sole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63106475A JPH01274702A (en) | 1988-04-27 | 1988-04-27 | Injection mold composition for foaming sole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01274702A true JPH01274702A (en) | 1989-11-02 |
| JPH0470890B2 JPH0470890B2 (en) | 1992-11-12 |
Family
ID=14434536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63106475A Granted JPH01274702A (en) | 1988-04-27 | 1988-04-27 | Injection mold composition for foaming sole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01274702A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002012378A1 (en) * | 2000-08-08 | 2002-02-14 | Kaneka Corporation | Expandable vinyl chloride resin composition |
| US6610757B2 (en) | 2000-03-21 | 2003-08-26 | Kaneka Corporation | Foamable vinyl chloride resin composition |
| US6723762B1 (en) | 1999-09-22 | 2004-04-20 | Kaneka Corporation | Foamable vinyl chloride-base resin compositions |
| US6765033B1 (en) | 1999-01-18 | 2004-07-20 | Kaneka Corporation | Expandable vinyl chloride resin composition |
| CN103909612A (en) * | 2013-01-07 | 2014-07-09 | 泉州三川机械有限公司 | PVC multicolor blowing injection molding apparatus and molding method thereof |
-
1988
- 1988-04-27 JP JP63106475A patent/JPH01274702A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6765033B1 (en) | 1999-01-18 | 2004-07-20 | Kaneka Corporation | Expandable vinyl chloride resin composition |
| US6723762B1 (en) | 1999-09-22 | 2004-04-20 | Kaneka Corporation | Foamable vinyl chloride-base resin compositions |
| US6610757B2 (en) | 2000-03-21 | 2003-08-26 | Kaneka Corporation | Foamable vinyl chloride resin composition |
| WO2002012378A1 (en) * | 2000-08-08 | 2002-02-14 | Kaneka Corporation | Expandable vinyl chloride resin composition |
| US6635687B2 (en) * | 2000-08-08 | 2003-10-21 | Kaneka Corporation | Expandable vinyl chloride resin composition |
| CN103909612A (en) * | 2013-01-07 | 2014-07-09 | 泉州三川机械有限公司 | PVC multicolor blowing injection molding apparatus and molding method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0470890B2 (en) | 1992-11-12 |
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