a film roll

Abstract

The invention belongs to the technical field of winding cores, and specifically relates to a film winding core. The film winding core includes a main body; the main body is provided with a No. Each is equipped with a circular baffle, and the inner ring of the baffle is set on the outer ring at both ends of the body, and the side wall of the inner ring at both ends of the body is provided with a No. 1 disc; the opposite surface between the two No. 1 discs is symmetrical There is a No. 1 rod, and the No. 1 rod is embedded in the slot on the side wall of the inner ring of the body; there is a rolling roller between the two No. 1 circular plates; the two ends of the coiling tube are hinged to the No. 1 circular plate through torsion spring At the center position of the roller, plastic film is wound on the outer ring of the roller; through the cooperation between the No. 1 groove, the torsion spring of the roller and the No. 1 circular plate, the unevenness of the surface of the outer ring of the body is eliminated.

Description

technical field [0001] The invention belongs to the technical field of winding cores, in particular to a film winding core. Background technique [0002] Film core products are suitable for winding, storage and transportation of various optical films, high-performance films, metal foils and high-grade papers, and cylindrical paper or plastic cores are usually used for continuous winding when film winding is performed. Since the film is continuously wound on the core, and the film material will have a certain internal stress during its preparation process, the internal stress of the film after winding will be released slowly over time, which may eventually cause the surface of the film to be damaged. A series of unevenness occurs due to the uneven release of internal stress. [0003] In the application number 2016213261381, a slotted core to improve the flatness of the film is provided. By setting a buffer groove on the core body, the internal stress of the film after windin...

AI Technical Summary

Problems solved by technology

Since the film is continuously wound on the core, and the film material will have a certain internal stress during its preparation process, the internal stress of the film after winding will be released slowly over time, which may eventually cause the surface of the film to be damaged. A series of unevenness occurs due to uneven release of internal stress

[0003] In the application number 2016213261381, a slotted core to improve the flatness of the film is provided. By setting a buffer groove on the core body, the internal stress of the film after winding will be slowly released and squeezed as time goes by. Press the core body to reduce the diameter of the core body, thereby solving the occurrence of a series of uneven phenomena on the surface of the film due to uneven release of internal stress; When returning particles, it will also cause unevenness of the film after winding

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