Shanghai Daoqin Plastics Co., Ltd.

due to bottle type 各异, therefore different bottle shrinkage process tool has different attention/notes key points. currently using/adopting shrinkage process main/primary has: water method, electrical hot method and method, from 实践 看, is from shrinkage 效果方面, also is from production efficiency 方面, gas process more tool has excellent property. upper small lower large bottle type bottle type relatively more used for 花生酱, 牛奶, and other food industry in, type bottle type in 进行商标 hot shrinkage 时, most solution/scheme is use gas process. shrinkage 底部, but also need make shrinkage force to most large value, anti to in upper shrinkage process in generate toward upper amount force effect/influence, generate toward upper 位移, formed bottle lower 部商标覆 cover/cap upper defect. upper large lower small bottle type bottle type relatively more make used for fast and 冰淇淋 and other industry in, type type tool has surface relatively light slip has and other features, generally using/adopting packaging electrical hot process 进行商标 shrinkage. due to method adjustment hot 源位置, therefore shrinkage process is upper and lower meanwhile 进行, 此时会因 shrinkage process in generate amount force label lower 移. through local 杯体 形状 can from upper remove type phenomenon. large in small bottle type bottle type relatively more used for 牛奶, material and other industry, type bottle type generally using/adopting gas process, if use electrical hot process difficult control, very difficult label toward in 间移动. in use gas is need lower — in — upper 顺序进行 shrinkage. if bottle surface has toward strip/profile is light slip 面时, is 避免空 gas poly in label in 间位置 dispersion 不出, need in label surface 打出若 dry gas 孔. small in large bottle type bottle type more used for material industry, type bottle type generally using/adopting gas process, 按“ in — lower — upper ” 顺序 shrinkage, can ensure label 位置 准确 property. 　　 hot shrinkage film as is label packaging materials tool has advantages: 节约森林资源, reduce cost, anti 潮, 卫生, use 方便; packaging rear product 美观, 节约空间, 且适于 large amount production and other features, 越 越 more by various product use. hot shrink film use material main/primary is various thermoplastic property film. most 初以PVC shrinkage film is 主, market demand development, PVC shrinkage film decrease/reduce, various PE, PP, PET, OPP, PVDC, POF and other more 层共挤 hot shrink film development speed, formed is market 主流. PVC film label has excellent 良 墨 property can, can made formed different color, resistant property, resistant property, soft/flexible property, chemical resistant property, transparent degree, hot shrinkage property can good features can good, widely used in material, day use product packaging. 但PVC材 material in has chlorine formed 份, environmental protection relatively 差. polypropylene (PP) （OPP）珠 light film label is environmental protection product, tool has printing color 泽鲜明, cover/cap force strong/high, slip property can good features, especially suitable for high speed 自动贴标 machine use, widely used in can can 乐, can and other material outer packaging. polyethylene (PE) by is 无毒材 material, especially suitable for food, product, material and other industry product label. high transparency polyethylene (PE) hot shrinkage label printing film is high transparency polyethylene (PE) hot shrinkage film is 基材, 以国际 upper flexible 印版刷 processing made as formed film is using/adopting formulation, substitute/replace low density polyethylene (PE) resin heavy packaging material, made formed high transparency, processing properties good, strong/high degree large hot shrinkage film. to “贴体” packaging, make product tool has and different appearance.