Multi-layer co-extrusion centrifugal casting film production line

Abstract

The invention discloses a multi-layer co-extrusion centrifugal casting film production line, and relates to the technical field of film production. According to the multi-layer co-extrusion centrifugal casting film production line, a first edge cutting mechanism is arranged between a flow casting mechanism and a corona mechanism, so that the two side edges of the cooled and formed film are cut, and the problem that a rubber layer in the corona mechanism is damaged due to large thickness of the two side edges of the just formed film is solved, so as to reduce the frequency of shutdown maintenance of the corona mechanism. A second edge cutting mechanism is arranged between the corona mechanism and a winding mechanism to cut the two side edges of the thin film coming out of the corona mechanism so as to produce the thin film with the actually needed width. A rim charge recovery device recovers rim charges cut by the first edge cutting mechanism and the second edge cutting mechanism, the rim charges are crushed and then put into an inner layer discharging mechanism, so that the rim charges produced by subsequent processing are used as part of raw materials of the inner layer of the film, online rim charge recovery is realized, the rim charges are recycled, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of film production, in particular to a multilayer co-extrusion centrifugal casting film production line. Background technique [0002] Multi-layer co-extruded film is generally divided into heat-sealing layer, support layer and corona layer. The selection of materials is wide, and materials that meet the requirements of each layer can be selected individually, giving the film different functions and uses. At present, the processes of extrusion, casting, corona and winding are often required in the production process of multi-layer co-extrusion film. However, in the actual production process, the film is unfolded from the middle to both sides during the casting process, so the side edges on both sides of the film are thick, and when passing through the corona roller in the corona mechanism, the rubber of the corona roller will be cut layer, resulting in the need for frequent replacement of the rubber layer, ...

AI Technical Summary

Problems solved by technology

However, in the actual production process, the film is unfolded from the middle to both sides during the casting process, so the side edges on both sides of the film are thick, and when passing through the corona roller in the corona mechanism, the rubber of the corona roller will be cut layer, resulting in the need for frequent replacement of the rubber layer, which is not conducive to the production operation of the production line

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