Shanghai Daoqin Plastics Co., Ltd.

PE safety 无毒, use its made formed film water, gas in, combined food 保鲜, 但普通PE保鲜 film 存 in below/following disadvantages: transparent degree low, anti 雾效果差, can very good packaging inner material; flexibility property 差, difficult tensile; shrink property 差, packaging product versus 差; shallow 盘底面黏 property 差, easy dispersion 盘. film use raw materials full 无毒, indicators 化验均 through technology 监督部门 testing combined 格. suitable for various food packaging. combined in ultra- 市, large sales.
保鲜 film tool has gas property good, resistant property, anti water 份流失, time long, good, has relatively high tough property, viscous property. suitable for 家庭冰箱, micro 波炉, 餐厅, 宾馆, 酒楼, food 厂, 西饼屋. price 实惠

       generate upper disadvantages causes has 两: its 一, PE is crystallization material, easy crystallization, from 而导致PE film transparent degree, flexibility property, shrink property relatively 差, difficult tensile; crystallization difficult obtain good anti 雾效果; its 二, PE材 material 本身不 tool has property, therefore property 差, therefore shallow 盘底面黏 property 差, easy dispersion 盘. therefore for upper causes has below/following 3 改进 direction: is reduce PE film crystallization degree improve/increase film transparent degree, flexibility degree, shrink property; is improve/increase film property; is selection anti agent. mono pure crystallization degree reduce and property improve/increase very difficult to technology requirements, must is property can balanced.

       for 普通PE保鲜 film in disadvantages, from processing methods, 基材, increase agent and anti agent types type selection and use amount 确定, flexibility degree and shrink property and other several 方面进行 research, high transparency soft/flexible PE保鲜 film formulation design 时应该 attention/notes:

       （1）PE safety 无毒, its film water, gas in, combined food 保鲜, therefore selection PE;
       （2）PE本身不 tool has property, therefore add increase agent 以便于 shallow packaging;
       （3） is reduce PE film crystallization degree, improve/increase its flexibility property, shrink property, add ratio/proportion flexibility agent;
       （4）PE film anti 雾效果, add amount anti agent.

       process conditions: according to material features and production features, melt temperature degree control in 250~270℃, 流延辊 temperature degree control in 23~28℃, 收卷张 force control is 98N以 inner. specific process parameters according to production 实际进行 adjustment.