المواد وتركيب أكياس البلاستيك PE

ما هو اسم المادة الخام الرئيسية لأكياس البلاستيك PE? 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. الطريقتان الأخيرتان لا تستخدمان المخففات, لهما عمليات قصيرة, واستهلاك منخفض للطاقة. لقد أظهرت طريقة الأنطولوجيا في الطور السائل الآن مزايا اللحاق بالركب. يمكن تقسيم أكياس البلاستيك من نوع PE إلى أكياس PE مسطحة, أكياس PE خطية, أكياس PE ذاتية اللصق, أكياس PE بسحاب, أكياس PE بعظم حديدي, أكياس PE قابلة للإغلاق الذاتي, أكياس PE لأعضاء جسمية, وأكياس PE بمقابض وفقًا لأنماط أكياس البلاستيك المختلفة المصنوعة خصائص تشكيل أكياس PE: A、 المواد البلورية تمتص الرطوبة بشكل قليل ومعرضة لحدوث كسور الانصهار. هي عرضة للتحلل عند الاتصال الطويل بالمعادن الساخنة. B、 تتمتع بسيلة جيدة, لكنها ذات نطاق وقيمة انكماش كبيرة, معرضة للانكماش إلى حد الحفر والتشوهات. C、 سرعة التبريد سريعة, ينبغي أن يتم تبديد نظام الصب ونظام التبريد ببطء, 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. ال 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). 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, odorless, 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. المذيبات العضوية الحمضية والقلوية الشائعة ليس لها تأثير تقريبًا عليه, ويمكن استخدامها للأدوات المائدة, الحرف اليدوية, الألعاب, الأجهزة, الإلكترونيات, الملابس, الزراعة, الغذاء, والهدايا.