Ziplock bag is machine blown film when blown by a strip of bone directly in the bag for bag sealing the mouth. Ziplock bag material is LDPE, you can add the price of anti-static material Jiangsu ziplock bag, printed ziplock simpler Jiangsu supermarkets, generally used for electronic equipment, powder, gifts, jewelry, documents, fruits, specialty classes ( For example, some small candy) and other related products. The distance from the top of the seal bag is 1.8CM, so when size is generally reported to be an indication of internal or external dimension size. Increasing the pressure can lead to increased density plastic ziplock bag, so shrinkage is reduced. Improve the material temperature, make products handsome volume expansion of the material into the cavity pressure reduction ziplock bag, the shrinkage rate increases; but the material temperature will reduce the viscosity, there is help transmit pressure to the cavity, and so that shrinkage is reduced, the size of the final shrinkage depends on the combined effects of these two effects described above. Generally sensitive to temperature changes the viscosity of the plastic, the latter effect impact, resulting in shrinkage decreases: the viscosity is not sensitive to changes in temperature plastic, former Effect, leading to shrinkage increases. Improve ziplock mold temperature, generally causes shrinkage increases, especially for crystalline plastics. But once the gate has been closed, and then extend the dwell time shrinkage will no longer be affected. Jiangsu ziplock bag, brother of custom plastic packaging manufacturers, Nanjing, Jiangsu plastic ziplock bag provided by the brother of the plastic packaging Limited. Nanjing brother of Plastic Packaging Co., Ltd. (www.nanjingxl.com) is a professional engaged in "non-woven bags, plastic bags, food bags, bags, vest bag, vacuum bag, garbage bags," the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "brother of the bag" brand has a good reputation. We adhere to the "service first, customers first" principle, so that the plastic packaging brother won the trust of customers in a plastic bag in the congregation, and establish a good corporate image. Special Note: This information is for reference pictures and information, please contact us to obtain the most accurate information, thank you!