Pe film: the difference between protective film, winding film and composite film

There are many kinds of protective film materials, such as PE PET OPP, which are mainly used in the manufacturing process and finished product delivery, and play the role of protective film; Plastic wrap is made of PE material, which is a very thin film with high tensile strength and is used for packaging. Like this logistics freight express company, it is used for packaging. The composite film is composed of several materials such as pe and PET, and its temperature resistance is stronger than that of ordinary PE.

PE breathable film:

Permeable membranes in all fields of human life contain a large proportion of ultra-fine density inorganic fillers. After the process of tape casting, micro-embossing and stretching, micropores are formed, and the density of micropores is high, which makes the breathable film have high moisture permeability, and it only permeates gas without leaking liquid. It is a new material developed rapidly in the world, which is called breathable film, and is widely used in various fields of human beings because of its breathable and airtight characteristics. Such as personal care, clothing and textiles, medical care, agriculture, food packaging and other fields of construction, packaging, outdoor equipment.

Characteristics of PE film:

Compared with impermeable membrane, it has the following characteristics:

1. Excellent air permeability has excellent and uniform air permeability, effectively isolating moisture and discharging hot air and moisture.

2. It is more skin-friendly and soft, and feels excellent, making the product softer and more comfortable.

3. The best physical and mechanical properties have excellent tensile and elongation properties.

4.PE has good chemical resistance and is not easy to corrode and print.

Classification of polyethylene film:

PE material is polyethylene, which is the most variety of plastic materials. It is a polymer material synthesized from polyethylene. Basically divided into two categories: low density polyethylene LDPE；; High density polyethylene

High-density polyethylene and PE materials are divided into five grades according to international unified standards: PE32, PE40, PE63, PE80, PE 100. PE pipes used in water supply pipelines are made of high-density polyethylene (HDPE) with the grade of PE80, and the PE80 MRS of PE 100 reaches 8MPA. The MRS of PE 100 reached 10MPA. MRS refers to the circumferential tensile stress intensity of the pipeline.

Polyethylene is a typical crystalline polymer. There are many kinds of it, such as LDPE, HDPE, etc., which are translucent plastics with low strength and specific gravity of 0.94g/cm3 (smaller than water). LDPE is soft, HDPE is hard and soft. Harder than LDPE, poor light transmittance and high crystallinity.