Paper core technology and paper core thereof

Abstract

The invention discloses a paper core technology. The technology has the advantages that step one, the outer side of a paper core bottom tube is coated with a layer of glue; step two, negative pressureattraction is conducted on the outer circumference of an elastic sleeve tube to allow the inner diameter of the elastic sleeve tube to be in a constant enlarging state; step three, the elastic sleevetube sleeves the paper core bottom tube along the axis; step four, the negative pressure at the outer circumference of the elastic sleeve tube is released to allow the inner diameter of the elastic sleeve tube to start retraction, and therefore the inner wall of the elastic sleeve tube is retracted to fit the outer wall of the paper core bottom tube. The technology has the advantages that an elastic sleeve tube structure is adopted, the linear precision of a paper core winding face can be effectively increased by the elastic sleeve tube, a certain shaping effect on the spirally wound paper core bottom tube is achieved by the elastic sleeve tube, and the combining strength, and the flatness and linearity of the paper core are enhanced by the elastic sleeve tube through the cooperation of abinding agent and a spiral structure of the paper core sleeve tube.

Description

technical field [0001] The invention belongs to the field of paper cores. Background technique [0002] The rolling of the lithium battery separator has high requirements on the straightness and stiffness of the rolling paper core. If the existing paper core is mostly made of pure paper, in the process of winding the lithium battery separator, the straightness of the paper core made of pure paper will and rigidity cannot be effectively guaranteed; the existing technology is to roll a layer of film layer on the surface of the paper core bottom tube to form a composite elastic material to enhance its precision and structural strength. Due to the internal stress of the paper tube, During the rolling process, the film-coated winding material will wrinkle, thereby reducing the yield rate. Contents of the invention [0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a paper core process with simple process an...

AI Technical Summary

Problems solved by technology

[0002] The rolling of the lithium battery separator has high requirements on the straightness and stiffness of the rolling paper core. If the existing paper core is mostly made of pure paper, in the process of winding the lithium battery separator, the straightness of the paper core made of pure paper will and rigidity cannot be effectively guaranteed; the existing technology is to roll a layer of film layer on the surface of the paper core bottom tube to form a composite elastic material to enhance its precision and structural strength. Due to the internal stress of the paper tube, During the rolling process, the film-coated winding material will wrinkle, thereby reducing the yield rate

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