Os materiais e a composição dos sacos plásticos de PE

What is the name of the main raw material for PE plastic bags? Its full name is Polyethylene, also known as Polyethylene in Chinese. It is a structurally simple polymer organic compound widely used in the world today. It is polymerized from ethylene and divided into high-density polyethylene, linear low-density polyethylene, and low-density polyethylene according to density. The production process of Pe plastic bags mainly includes the following points: Um、 Slurry method. Polymerization in diluents (such as hexane) is an early industrialized and currently high-yielding method. B、 Liquid phase ontology method. Polymerization in liquid propylene at 70 ℃ and 3MPa. C、 Gas phase method. Polymerization of propylene under gaseous conditions. The latter two methods do not use diluents, have short processes, and low energy consumption. O método de ontologia em fase líquida demonstrou agora vantagens de recuperação por trás. Os sacos de plástico PE podem ser divididos em sacos planos de PE, sacos lineares de PE, sacos autoadesivos de PE, sacos com fecho éclair de PE, sacos com osso de ferro de PE, sacos auto-selantes de PE, sacos de órgão de PE, e sacos com alça de PE de acordo com os diferentes estilos de sacos de plástico fabricados. As características de formação dos sacos de plástico PE: Um、 Os materiais cristalinos têm baixa absorção de humidade e são propensos a fratura por fusão. Eles são propensos à decomposição quando em contacto prolongado com metais quentes. B、 Boa fluidez, mas grande gama e valor de encolhimento, propensos a encolhimento, amolgadelas e deformações. C、 A velocidade de arrefecimento é rápida, o sistema de vertimento e o sistema de arrefecimento devem ser dispersos lentamente, and attention should be paid to controlling the molding temperature When the material temperature is low or high, it is easy to orient. When the mold temperature is below 50 degrees, the plastic parts are not smooth and prone to poor welding, flow marks, and warping deformation above 90 degrees. D、 The plastic wall thickness must be uniform, avoiding missing glue and sharp corners to prevent stress concentration. PE plastic bags can be made as thin as 2.5 threads on one side, while on the market they are usually as thin as 3 threads, greatly reducing product costs. A 2.5 thread PE sealed pocket still has good sealing performance. Easy to use (simply insert the product and lock the bone strip). Customization is available for any thickness between 2.5 and 15 threads. The thick PE sealed bag is firm on both sides and has non explosive edges. O saco de plástico PE tem boa transparência e pode ser reutilizado. Os sacos selados de PE podem ser impressos e perfurados (anti-inflação), e a boca do saco de plástico pode ser feita em vermelho (borda vermelha) ou branca (white edge). The quantity is accurate, not small, not small in thickness. One hundred per pack, neatly packaged. The main characteristics of PE plastic bags are non-toxic, inodoro, low density, and superior strength, stiffness, hardness, and heat resistance compared to low-pressure polyethylene. They can be used at around 100 degrees Celsius Has good electrical performance and high-frequency insulation that is not affected by humidity, but becomes brittle, wear-resistant, and prone to aging at low temperatures Suitable for making general mechanical parts, corrosion-resistant parts, and insulation parts. Common acidic and alkaline organic solvents have almost no effect on it, and can be used for tableware, artesanato, toys, hardware, electronics, vestuário, agriculture, food, and gifts.