In almost all plastic synthetic resins. Plastic resins is the main component, the adhesive plays a role, the other ingredients can plastics cemented into a whole. Although the incorporation of additives can change the nature of the plastic, but plastic resin is to determine the type, performance and use of fundamental factors composite food bags for food, electronics, chemicals, pharmaceuticals, tea, precision instruments and defense products, vacuum-packed or sophisticated general packaging. Raw material: OPP, PE, POF, PPE, PP, etc. composite membrane process is divided: while envelope sugar food bags, bottom seal bag, sealed in bags, side seal. Require four different machines. PE film: Transparency slightly less cpp, but softer than cpp, PE film is better tensile properties, tensile strength is better. There are white and transparent PE two kinds of PE (HDPE / LDPE / LLDPE), feel softer. PA film (nylon): PA relatively tough material, transparency and wear puncture Indian food bags, easily oxidized, easy to shrink and wrinkle, this material is suitable for installation similar bone products. Selection and use of qualified food bags, should note the following: 1. Food packaging bags food bags have a Chinese identity, marked name and address, product name food bag factory, and the words in a prominent place marked "food" . Food bag products are accompanied by the factory inspection certificate. 2. The food bag factory is no different smell, no smell, there is a special smell of plastic bags, can not be used in food packaging. Inner sugar food bag _ _ Red plastic grocery bags (certified merchants) provided by Xiong Red Plastic Factory. Xiong Red Plastic Factory (corp.1688.com/page/index.htm?memberId=poqwe321&fromSite=company_site&tab=companyWeb_detail) is specialized in "plastic bags, food bags, garbage bags, bags, craft bags, merchandise bags," the enterprise the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Zhao floor.