Degradable composite mulching film forming process

Abstract

The invention relates to a degradable composite mulching film forming process, in particular to a degradable composite mulching film forming device. The degradable composite mulching film forming device comprises a bottom plate, a supporting frame, a cooling slitting mechanism and a tensioning winding mechanism, wherein the supporting frame is installed on the bottom plate, and the cooling slitting mechanism is installed at the left side of the upper end face of the supporting frame; and the tensioning winding mechanism is installed at the right side of the upper end face of the supporting frame. According to the degradable composite mulching film forming process and device, the problems that the cooling effect of a mulching film is affected due to the fact that the surface of the mulchingfilm is uneven in temperature caused by the fact that cooling liquid cannot be evenly smeared on the surface of a composite mulching film when the composite mulching film is cooled, and the winding efficiency of the mulching film is affected due to the fact that the part making contact with a knife edge is wrinkled when the mulching film is slit can be solved, and the problems that because the mulching film cannot be tensioned before the composite mulching film is wound and the winding tension cannot be increased, the mulching film cannot be tightly attached to a winding roller during winding, loosening occurs, and even winding disengagement occurs can be solved.

Description

technical field [0001] The invention relates to the technical field of degradable films, and specifically proposes a degradable composite film forming process. Background technique [0002] Composite films play an important role in daily life, and they can be used to prepare food packaging bags, shopping bags, mulch films, garbage bags, etc. However, with the increase in the use of plastic film products, a large amount of pollution has been brought to the natural environment. Conventional plastic film products, such as plastic films made of polypropylene, polyvinyl chloride, polyethylene, etc., are not easy to degrade in the natural environment. After many years, they still exist in the natural environment, and these non-degradable plastic films increase the pollution of the environment. With the strengthening of people's awareness of environmental protection, how to alleviate white pollution has become a topic of increasing concern, and degradable plastic films have gradua...

AI Technical Summary

Problems solved by technology

[0003] During the forming process of the degradable composite mulch film, according to the blow molding method of the composite mulch film, it needs to be cooled and rolled up and collected: the existing degradable composite mulch film forming device has the following defects: 1. The existing degradable composite mulch film forming device has the following defects: The plastic film forming device cannot evenly apply the cooling liquid on the surface of the composite plastic film when cooling the composite plastic film, resulting in uneven cooling and heating of the plastic film surface, which affects the cooling effect of the plastic film, and wrinkles will appear on the part in contact with the knife edge when cutting the plastic film , affecting the winding of the plastic film; 2. The existing degradable composite plastic film forming device cannot tension the plastic film before the composite plastic film is rolled, resulting in loosening during winding, and the winding tension cannot be increased by extrusion The film and the winding roller cannot be tightly attached during winding, and loosening occurs, and even the winding may fall off, which affects the winding efficiency of the film.

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