Hardener hardener, also known as a curing agent or a curing agent. Its main role is to make the linear molecular structure of the polymer cross-linked into the molecular structure of the food bag sealing body, so that the resin has thermoset. Phenolic resin curing agent is commonly used methenamine (hexamethylene tetramine). Epoxy curing agents are commonly used amines, anhydrides 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-resistant, easily oxidized, easy to shrink and wrinkle, this material is suitable for installation similar bone products. PET film: This film is ultra-transparent, hard material, and high temperature, good food bags printing printing effect, more suitable as food packaging bags, PET film feels crisp feel special, in our hands can rustling crisp ring. PE film: Transparency slightly less cpp custom food bags, 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 Material relatively tough food bags, transparency and wear puncture-resistant, easily oxidized, easy to shrink and wrinkle, this material is suitable for installation similar bone products. Food bag production | food bags | Red Plastic Factory provided by Xiong Red Plastic Factory. Xiong Red Plastic Factory (corp.1688.com/page/index.htm?memberId=poqwe321&fromSite=company_site&tab=companyWeb_detail) strong, credible, Hebei Baoding bag industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Red plastic factory and you hand into the brilliant, for a better future!