Shanghai Daoqin Plastics Co., Ltd.

本文 main/primary introduction polyurethane ester PU coating production process research, has solution coating material in production process in “挂皮” phenomenon; improvement material flow property, solution high thick degree coating and selection and other issues meet/satisfy demand. 0. front polyurethane ester PU water property coating already formed is textile product new 手段之一. due to product tool has function more, property can high, large, therefore in inner outer textile product material market important 位置. its full water property solvent agent property, 不但改变 操 as 工人 劳动 ring 境, remove safety and environmental protection issues. polyurethane ester coating can formed more function high add value textile product, can used for clothing/apparel, decoration, industry, military industry and other large field/area, its outlook/prospects separation vast. project research by is year degree 家科委“国家 grade new product plan ”, product in year by is “江苏省 excellent new product ”, made production 30 more 万米本 product formed rear USA, Japan, Southeast Asia belt/tape, to good 评. 1. main/primary issues 1.1 solution production in material “挂皮”. water dispersion type polyurethane ester polymer is pellets 状, must need use relatively high temperature degree can formed property can relatively good film. in production use process in, this type of material time, gas 候 变化而 generate local 交链. 发生交链变化 rear material surface formed thick thick 一层皮, 俗称“挂皮”. this 结皮浆 in coating in belt/tape to upper formed color (斑) block, effect/influence formed product quality. fine analysis 发现浆 material in conditions lower generate 自交链而 rear viscosity increase, 继而出现“挂皮”. through how much selection experiment/testing, most rear in material in add wet agent 延缓浆 material “挂皮”, meet/satisfy production need. wet agent use amount how much is 宜, also more experiment/testing, specific table/sheet 一: table/sheet 一: wet agent use amount and material time comparison table/sheet screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='Click here to open new windownCTRL+Mouse wheel to zoom in/out';} title=点击图 sheet/slice can in new 窗口打开 style=CURSOR: pointer alt= src=http://www.fibreadd.com/img/2006111163362.gif onload=if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new windownCTRL+Mouse wheel to zoom in/out';} border=0>由此 can obvious 看出: in material in add wet agent has obvious function, use amount to 6%, use amount again increase, its 效果也不 large, therefore selection 6% 保 wet agent in material in has solution production “挂皮” phenomenon. 1.2 improvement material flow property. 我 injection molding processing processing use polyurethane ester PU coating material solid amount high 达50%, thick degree high, in coating in belt/tape flow property issues; in production in rigid coating also relatively positive 常, 但开 几百米 rear 布面就会出现“鱼鳞状” strip/profile and toward 挡子印, heavy effect/influence coating quality; can in material in add combined 介质, through improvement material flow property improve/increase coating quality, according to material property can use types 介质, 结果如 table/sheet 二: table/sheet 二: material in add different comparison. screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='Click here to open new windownCTRL+Mouse wheel to zoom in/out';} title=点击图 sheet/slice can in new 窗口打开 style=CURSOR: pointer alt= src=http://www.fibreadd.com/img/2006111163415.gif onload=if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new windownCTRL+Mouse wheel to zoom in/out';} border=0> from table/sheet in 出: has has machine solvent agent can versus solvent material, can improvement and improve/increase material in coating flow property, solution upper 述 提 疵病. 1.3 solution high thick degree coating difficult 题. coating processing process has dry method, wet method, hot solvent method, method, bonding method and other, its in dry method application most more, dry method is will coating use coating device uniform coating in upper, add hot (如烘 dry or 焙烘) make solvent agent or water 挥发, coating agent in material surface formed film, injection molding processing processing using/adopting dry method process. injection molding processing processing more function coating machine 系奥 利J.Zimer company 引进, equipment is upper 刮刀式 and 园网两 use. upper tool has can function, is different requirements coating product, in upper below/following experiment/testing. (1) hard hard method: hard hard 刀即刀口以 by in degree adjustment is 零, is coating 刮, suitable 此刀距 main/primary advantages is coating material in upper film thick soft/flexible, 经二遍 coating rear its coating film thick degree can 达5 filament above, this thick degree in generally coating equipment upper is for to, using/adopting 此刮刀 coating rear temperature degree can high, 否则会 reduce 剥离牢 degree, temperature degree 以130℃, speed is 15米／ separation use hard hard can solution high thick degree coating difficult 题. (2)浮刀 method: 浮刀即刀口 and by in degree adjustment is 20～30, coating generally suitable for in upper coating formed film thin process, 经二遍 coating rear its thick degree in 3 filament left right; 浮刀式 coating main/primary advantages is can improve/increase material coating uniform degree and cover/cap property, 浮刀式 coating rear temperature degree can improve/increase to 150℃ left right, speed 20～25米／ separation, relatively combined large production. in by 衬辊 清洁工 as relatively 方便. 1.3 solution semi anti water quality. polyurethane ester PU coating textile product requirements has relatively high resistant water property can, mono coating processing is difficult to; is need in coating front upper semi anti water 整理 达 to formed product resistant water requirements and improve/increase formed product 手感. injection molding processing processing currently can anti water equipment sheet/plate or 布铗式两 types type machine, due to this types equipment in anti water 整理时基布 两边 in 经 针铗 or rear generate 针眼间距 and 铗头皱印 in coating grade easy generate 边皱印, but also difficult remove 而直接 effect/influence coating 刮; is 此我们就 according to design simple semi anti water equipment — belt/tape has 轧槽 整理车, in equipment upper semi anti water rear 基布 两边不但不 generate 绉印, but also very 平挺, to rear coating 刮工序 provide quality good 基布. 2.结论: through for polyurethane ester PU coating material film “挂皮” solution, improvement material flow property, solution semi anti water quality and high thick degree coating difficult 题, product types production process already basic 完善, made product already 顺利完 formed 30万米, formed product quality in 95% left right, its inner in quality combined standards, indicators to requirements, product formed rear USA and Southeast Asia and other 国, to 客户 欢迎. 3.结束语: as is tool has high add value new generation textile product —— polyurethane ester PU coating material, tool has series function flame retardant, hot, light, anti-static and other, this has lower research and discussion, will in stability this product quality upper force development more more function property coating textile product, make coating product property can 进一步 increase and 完善, application areas 进一步拓 wide, meet/satisfy inner outer textile product market demand, make injection molding processing processing obtain more good 效益.