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plastics in rotational molding process 旋转 molding 旋转浇铸 molding
Date: 2019-11-18 10:03
Views: 2554
Source: Internet
rotational molding process
also 称旋转 molding , 旋转浇铸 molding. is types thermoplastic property plastics in molding methods.
rotational molding molding is manufacturing various in plastics parts more use process. rotational molding molding process utilizing add hot and strip/profile 轴线 旋转 production in mono parts. will plastics positive in mold inner, force make plastics in mold inner upper.
即先 will powder or 糊状 material material 注入模 inner, through for plastics material property mold add hot and toward 滚动旋转, make material material 借自身 heavy force function and force function uniform mold inner and 熔 melt , cooling rear demolding 而 in products. due to rotational molding speed high, equipment comparison simple, product 几乎无 internal stress , easy 发生 deformation , 凹陷 and other disadvantages. most main/primary used for polyvinyl chloride (PVC) plastics production toys , 皮球, bottle and other small type products, in large type products upper has relatively more application, use resin already has polyamide (PA) , polyethylene (PE) , modified polystyrene (PS) polycarbonate (PC) and other.
similar 于旋转铸塑 types molding methods, different is its use material material is liquid 体, is property dry powder material. its process is powder material mold in make it 绕两 互 versus 垂直 轴旋转. hot uniform in mold inner upper formed is 一体, rear again cooling can from mold in 取 空心 products.
也叫旋转 molding or molding. will powder plastics (如LLDPE) add to combined mold in, mold in meanwhile hot, plastics melt uniform mold cavity surface, mold cooling rear can to and mold cavity same plastics in products, 如船, 箱, 桶, 盆, and other. usually add material, 封模, add hot, cooling, demolding, mold and other basic steps formed. method tool has products shrinkage rate small, products thick easy control and mold cost relatively low advantages, 但 production efficiency relatively low.
production process
in rotational molding made as process front, need good 一 quality 良 good 模子, will its in Formosa Plastics machine upper, this 台铸造 machine inner also separation has made hot and made cold plant/unit. in 安置妥当之 rear, 首先 几 block mold in machine upper 面. rear, in mold inner 放入早期规则 type plastics resin, again will mold from and water 平 两 角 degree slow slow 旋转放至烤箱 in. melt resin will hot mold and outer packaging uniform bonding in 一起. rear, again will mold made cold ring equipment in, mold in its in 继续旋转直至 its 每一部 separation thick degree maintain 一致. mold by cold 冻完毕之 rear, will its from machine upper lower. in made as process in, mold speed degree, add hot and cooling time need 经 严格 精确 control .
design advantages
and other mold process versus ratio, rotational molding process is provide more more design 空间. in positive design 理念之 lower, can will separation parts combined formed 一 完整 mold, this type of method large large reduce high assembly cost.
rotational molding made as 程序 also 包括一 series solid has design 思维 methods, how to and thick degree, how to strong/high external 设置. if also need add 一 附 design 话, that 么我们 also can will add strong/high this step/link add to design in.
rotational molding process is product design 者们 无尽想象. design can in made as process process in selection most good made as material, its in food and material 总局认 can various material. made as process in additives can has 效 抵御 gas 候 侵袭, 静 electrical dry and other outer 界客观 factors. in design process in, 插入口, 螺纹, 手, plant/unit, surface design is its in 看点之一. design 师们同样也 can design formed more mold, its internal can is in 空, also can is foam.
cost advantages
当 cost formed is 我们考虑 factors 之一时, rotational molding process ratio its it type type process more tool has market advantages. in and blow molding process and injection molding process comparison 时, rotational molding process more can in has cost scope/range inner light easy production large small different parts. mold versus for need low many, is it has internal core need made as formed. but also in has internal core lower, need small small 变化就 can made as formed 另一 模 type.
due to made as process in 各 部 parts is in high temperature and process process/workflow lower most molding, different that in heavy pressure lower formed parts, therefore rotational molding mold need 像 injection molding process that also need especially processing can 经受住 heavy pressure 考验.
至于 use production product production cost currently has decline, is light type plastics need 想转换 formed heavy type plastics, need consumption more more Raw Materials. for/regarding rotational molding process 说, 节省消 consumption cost mono type will is its future high output/production volume development toward.
rotational molding process features main/primary has :
· rotational molding mold cost low — and other specifications large small product, rotational molding mold cost is blow molding, injection molding mold cost 1/3 to 1/4, combined molding large type plastics products;
· rotational molding product strong/high degree good — rotational molding can achieve product thick degree ultra- 5 mm, solution in product relatively thin issues;
· rotational molding can various parts;
· rotational molding product can non complex, thick degree can ultra- 5 mm above;
· rotational molding can production full product;
· rotational molding product can filling foaming material, achieve temperature;
·无 must adjustment mold, rotational molding product thick can adjustment （2mm above ）.
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