What are the Guidelines for Using Protective Film for Deep-Drawing?

As a PE Protective Film Manufacturer, share with you. When using stretch film, pay attention to the related instructions. After all, there are various packaging materials on the market. In order to be able to choose more suitable stretch film products, we must have a systematic understanding of stretch film products. In order to understand the performance advantages of stretch film.

First: size, specifications and appearance

PE Self-Adhesive Protective Film

The size and specifications of the stretched film are the basic specifications when the customer orders. The width deviation, thickness deviation, core length, inner diameter deviation and quality deviation of the stretched film are specified. The appearance requirements of stretched films are an important part of my country's product standards. Among them, the flatness requirements for heads, bubbles, perforations, breaks, lumps, fish eyes and stretched films are very high.

Second: tensile and elongation at break

Tensile strength and elongation at break are also called tensile properties. Tensile performance is an important indicator of tensile film. The width is 15 mm, the distance between the chuck of the tensile testing machine is 50 mm, the gauge length is 50 mm, and the test speed is 250 mm/ min±25 mm/min. The use of long strip specimens does not need to stretch the film, and at the same time avoids the defect that the stretched film is very thin, and the stretched film has a great influence on the friction of the sample and easily leads to breakage.

Third: Water vapor permeability

It is used to describe whether the stretch film can protect the product from moisture in the ocean or humid environment, that is, winding and sealing. The detection of water vapor permeability is very important. Use the GB/T1037-1988 plastic film standard and the test method for moisture permeability of the sheet to determine the moisture permeability of water vapor.

Fourth: Physical and mechanical properties

The physical and mechanical properties of the conveying stretch film are mainly defined as tensile force, elongation at break, viscosity, permanent deformation, elastic recovery, tensile force retention, F force value, penetration resistance, mass deviation per unit area, light transmittance, haze, Technical indicators such as water vapor permeability.

Fifth: Other actual indicators

Viscosity, tensile retention, permanent deformation, elastic recovery and penetration resistance is a special tensile film test method developed by the ASTM organization of the United States of America.

Stretch film is widely used in foreign trade, papermaking, hardware, plastic chemicals, building materials, food and other industries. It is mainly used for packaging goods with good elasticity and good viscosity. It is relatively safe and reliable, and the application of stretch film is also relatively simple and convenient. , Will not affect the quality of the product, will not stick twice, so it is more superior in use.

Our company also has PE Self-Adhesive Protective Film on sale, welcome to contact us.