Shanghai Daoqin Plastics Co., Ltd.

  in 2014 year full polyurethane ester 总产销 amount to 2150 10,000 tons, its in elastomer 约200 10,000 tons, amount 9.3%. 2014 year China polyurethane ester 总消费 amount 960 10,000 tons, its in elastomer amount 82 10,000 tons, 占总消费 amount 8.6%, 而TPU消费 amount is 28 10,000 tons. China TPU 十三五规划 main/primary target/goal is medical, automotive, film high 端TPU product .

 
图 TPU current situation

is what TPU in and film high 端TPU product 会逐渐 by 人 青睐? lower 面我们先 from 认识TPU开始?

TPU is separation in has 氨基甲 acid ester 基团（-NHCOO-) polymer, is types has hard and soft 段 嵌段 copolymer, tool has plastics can property and force strong/high degree, also tool has elastic property. due to this type of has structure, therefore TPU can widely used in: footwear materials, anti water wet film, film, extrusion pipe/tube, hydrolysis resistant film, automotive, flame retardant and other.

versus for/regarding other material 而言, TPU force property can tool has can adjustment property, Shore hardness in 30A-80D between, wear resistance, strong/high degree, resistant strong/high degree, fracture elongation high, resistant 曲挠, oil resistant 污, resistant aging, weather resistant, high anti water, high wet degree, hydrolysis resistant and other property can excellent; and environmental protection 污染, material versus property good, 无毒, 无致癌 and other features.

table/sheet TPU材 material and other material property can comparison

therefore currently 而言, TPU is substitute/replace PVC most good selection. this main/primary not only is tensile strength large large excellent 于PVC, low temperature resistance property more is PVC不 can ratio 拟; in addition, biodegradable property, antimicrobial property, increase agent and other property can, ratio PVC excellent. for/regarding in high product upper, TPU取代PVC is selection.

table/sheet TPU and PVC property can comparison  

currently, TPU材 material already widely used in type, clothing/apparel, medical use product, industrial use product, use product and other field/area, especially is medical field/area.

table/sheet TPU application

TPU film tool has low temperature resistance, high toughness, high strength, environmental protection can separation understanding, “ can property ” and other advantages, positive in field/area 取代PVC, EVA, 人造革 and other material, in China consumption amount is growth. full environmental protection 意识 不断 reinforcement, meanwhile technology 进一步 development, TPU application scope expand large. 2010 year 至2014 year overall market growth rate in 15%每 year.

1.TPU film features

TPU film is TPU raw materials pellets melt extrusion molding formed, its film tool has low temperature resistance, high toughness, high strength, environmental protection can separation understanding, “ can property ” and other advantages, currently positive 逐步取代PVC, EVA, 人造革 and other material, especially is in film field/area. ratio 如:

鞋 type due to use TPU film thick degree comparison thick （0.5~2 mm), 各 type 运动鞋, outer 登山鞋 a large amount of use from 而占据 most large consumption amount;

sports equipment main/primary in in water upper 冲锋艇, gas 艇, water upper 风筝, main/primary use polyether type TPU film;

used for 家纺, 冲锋衣, outer use product, medical use product （手术衣） anti water wet TPU thin film.

 
图  TPU应 used for outer clothing/apparel

2.TPU film processing process and features

TPU can through blow molding, and other molding methods, production TPU film.

blow molding method : raw materials hot extrusion machine melt 塑化, from machine 头进入模头, pressure shrink gas 吹涨, 牵引, rear and separation 切;

流延 method : raw materials hot extrusion machine melt 塑化, from machine through 狭缝式模口 extrusion, to cooling upper, make raw materials cooling, rear tensile, separation 切, 卷取.

table/sheet  TPU extrusion process: blow molding, comparison

 
图 显 micro lower film 晶点

crystallization property for/regarding film effect/influence

combined crystallization, film appearance good, and force property can excellent.

图 TPU film crystallization property in

if crystallization property strong/high, 会导致 melt 破裂, extrusion generate poly, 如图 示, film poly more, and film appearance coarse 糙, force property can good.

图 TPU film crystallization property strong/high

3.TPU film extrusion speed rate for/regarding film effect/influence

TPU film in extrusion speed rate increase large 至临界 speed rate rear, sample 都会发生 extrusion 畸变. main/primary performance can separation is: surface and overall 畸变. therefore, in ensure film appearance property can good conditions lower, 选取适当 extrusion speed rate, for/regarding improve/increase production has 一定 帮助.

4. high wet property can TPU film features

micro film: generally is 以 PTFE is raw materials, 经 膨化 tensile rear formed types tool has micro property film 本身 tool has more structure, 孔径0.2~10um, can water gas, this 样人体 inner dispersion water gas can has through toward outer expand dispersion, water method 渗透, from to anti water 透视效果;

hydrophilic water property film: 以 polyurethane acid ester （TPU） is main/primary material, hydrophilic water 基, surface and uniform structure, surface has hydrophilic water property 基团, hydrogen 键形式“捕获”人体 dispersion water gas separation 子, through separation 子链段以 and film inner outer pressure water gas “传递”出, from to excellent anti water wet property can.

  separation wet film and micro wet film comparison

TPU separation wet film versus for/regarding micro film 而言, tool has resistant surface active property agent, has relatively high water pressure, can selection property 渗透, has relatively strong/high resistant property can, full fine and odor, relatively low cost and other has 点

table/sheet separation wet film and micro wet film comparison

table/sheet high wet property can TPU property can

TPU anti water wet film currently main applications 于赛车服, machine 车装, high 尔夫装, anti water 服, 登山鞋, 浴帘, 桌布, 雨衣, 婴儿围嘴, 航海服, 钓鱼裤, 雪褛, 风衣, anti 寒夹克, slip 雪服, slip sleeve/set, 登山服, 打猎服, 冲浪服, 马衣, 冲锋衣, 战斗服, parts, machine anti water parts and other.