Материалы и состав полиэтиленовых пакетов

Как называется основной сырьевой материал для полиэтиленовых пакетов? 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: A、 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. The liquid-phase ontology method has now shown advantages of catching up from behind. PE plastic bags can be divided into PE flat bags, PE line bags, PE self-adhesive bags, PE пакеты с застежкой-молнией, PE iron bone bags, PE самозапечатывающиеся пакеты, PE organ bags, and PE handle bags according to the different styles of plastic bags made The forming characteristics of Pe plastic bags: A、 Crystalline materials have low moisture absorption and are prone to melt fracture. They are prone to decomposition when in long-term contact with hot metals. B、 Good liquidity, but large shrinkage range and value, prone to shrinkage Dents and deformations. C、 The cooling speed is fast, the pouring system and cooling system should be slowly dispersed, 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. Тем 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. The PE plastic bag has good transparency and can be reused. PE sealed pockets can be printed and perforated (anti inflation), and the plastic bag mouth can be made in red (red edge) or white (white edge). Количество точно, не маленькое, не маленькое по толщине. Сто штук в упаковке, аккуратно упаковано. Основные характеристики пластиковых пакетов из ПЭ — нетоксичные, без запаха, низкая плотность, и высокая прочность, жесткость, прочность, и термостойкость по сравнению с полиэтиленом низкого давления. Их можно использовать при примерно 100 градусах Цельсия. Обладают хорошими электрическими свойствами и высокочастотной изоляцией, не зависящей от влажности, но становятся хрупкими, износостойкими, и склонными к старению при низких температурах. Подходят для изготовления обычных механических деталей, коррозионностойких деталей, и изоляционных деталей. Обычные кислотные и щелочные органические растворители почти не влияют на них, и могут использоваться для посуды, ремесленные изделия, игрушек, металлопроката, электроники, одежда, сельского хозяйства, пищевых продуктов, и подарков.