I.    Production of polythene heat-shrinkable film The production of polyethylene heat-shrinkable film for packaging can be carried out either by the single-bubble method (direct blow-mould...

1. Polyethylene Polyethylene is the most commonly used resin in co-extruded barrier multilayer laminated films. According to the different densities, polyethylene is divided into low-density polyethy...

Long-term film production needs to be carried out in advance of the necessary maintenance and maintenance of equipment. For cast film unit maintenance is introduced as follows. I. Multi-laye...

I. Characteristics PET plastic molecular structure is highly symmetric, has a certain crystalline orientation ability, so it has a high film and into the sex. PET plastic has good optical propertie...

Causes. 1. The coating roller and bearing precision is not enough to form a regular crossbar path; 2. When the coating roller is the active drive, the choice of speed control programme is not appr...

I.   Comparison between wrap-around and shrink films There is a lot of overlap between the application areas of wrap-around films and shrink films, especially in the area of integrated pa...

There are many moulding methods for plastic films, such as calendering, casting, blow moulding and stretching. Among them, bi-directional stretching has become one of the most popular methods in recen...

I. Brief description PE, full name Polyethylene, is the structure of the simplest polymer organic compounds, the world's most widely used polymer materials, protective film, special polyethylene (P...