A high-performance extrusion device for ldpe film material

Abstract

The invention discloses a high-performance LDPE film material extrusion device, which belongs to the film field. It is a high-performance LDPE film material extrusion device. The scheme uses a motor to drive the rotating shaft to rotate, and the centrifugal force generated by the rotating speed of the rotating shaft , separate the magnetic piece at the left end of the grinding piece from the magnet, and throw the grinding piece out of the installation groove to a length that matches the centrifugal force moment, and use the grinding piece to better grind the LDPE film material. When the grinding piece is thrown by centrifugal force When grinding with the LDPE film material, the processing temperature of the extruder is 100°C at the feed port 1, and the carbon dioxide gas is heated at a high temperature, and the air pressure rod is pushed into the inside of the limiting groove by air pressure to fix the limiting groove. In order to improve the light transmittance of the film, the balls at the outer end of the grinding sheet are in full contact with the film material to improve the grinding effect. The balls and the film material rub and roll, and the irregular lines will bring out the elastic body inside the storage cavity and fully mix the film material. Thereby improving the toughness of the film material.

Description

technical field [0001] The invention relates to the field of films, more specifically, to a high-performance extrusion device for LDPE film materials. Background technique [0002] LDPE film is low-density polyethylene film, the full English name is Low Density Polyethylene, which is a low-density polyethylene film that is blown after polymerizing ethylene through a polymerization process. [0003] Low-density polyethylene film is generally made by two processes of blow molding and casting. The thickness of cast polyethylene film is uniform, but due to its high price, it is rarely used. Blow-molded polyethylene film is made of blown grade PE particles. It is blown by a blow molding machine and has low cost, so it is the most widely used. Low-density polyethylene film is a translucent, glossy, soft film with excellent chemical stability, heat sealability, and water resistance. Its main disadvantage is that it has poor barrier properties to oxygen. It is often used as the inn...

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Problems solved by technology

[0003] Low-density polyethylene film is generally made by two processes of blow molding and casting. The thickness of cast polyethylene film is uniform, but due to its high price, it is rarely used. Blow-molded polyethylene film is made of blown grade PE particles. It is blown by a blow molding machine and has low cost, so it is the most widely used. Low-density polyethylene film is a translucent, glossy, soft film with excellent chemical stability, heat sealability, and water resistance. Its main disadvantage is its poor barrier to oxygen. It is often used as the inner layer film of composite flexible packaging materials, and it is also the most widely used and most used plastic packaging film at present. It accounts for more than 40% of the consumption of plastic packaging film

[0004] Low-density polyethylene (LDPE) is a general-purpose thermoplastic polymer material with good physical and mechanical properties. It is widely used in packaging, film, daily necessities, etc. LDPE is the most widely used film material. Due to the crystal nuclei with different growth rates on the surface and inside of the film, the internal crystal nuclei gradually grow to the surface and become large spherulites, causing unevenness on the surface of the film and increasing the scattering of light. Therefore, the haze of the unmodified LDPE film is relatively low. Large, low light transmittance, usually by blending method, in the LDPE film material formula, add nucleating agent such as dibenzylidene sorbitol to improve the transparency of LDPE film, but the effect is not good

[0005] LDPE is the most widely used film material. The unmodified LDPE film produces crystal nuclei with different growth rates on the surface and inside, and the internal crystal nuclei gradually grow to the surface and become large spherulites, which makes the surface of the film uneven and increases the ability to absorb light. Scattering, so the unmodified LDPE film has a large haze and low light transmittance

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