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Film winding core, and wound film body using same

一种薄膜卷绕、卷芯的技术，应用在薄膜卷绕用卷芯,薄膜卷绕体领域，能够解决薄膜应变、妨碍薄膜放卷等问题，达到降低生产不良、成品率和薄膜的利用率改善、防止弯曲或松弛的效果

Inactive Publication Date: 2013-11-27
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When storing the film after winding it on a cylindrical core, the film may be strained (deformed), which hinders the unwinding of the film

Method used

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  • Film winding core, and wound film body using same
  • Film winding core, and wound film body using same
  • Film winding core, and wound film body using same

Examples

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Embodiment Construction

[0032] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Hereinafter, in this specification, the core for film winding is simply referred to as "core".

[0033] Such as figure 1 with figure 2 As shown, the core 10 is composed of a core body 11 and a plurality of film supporting parts 14 mounted on the core body 11 . The core main body 11 is composed of a bearing portion 12 having a bearing hole 12h, a plurality of blade portions 13 and a plurality of rim portions 15 . Such as image 3 As shown, the film roll body 100 includes a core 10 and a long film 18 wound on the core 10 . The winding core 10 can be rotated around the rotation axis O passing through the bearing hole 12h.

[0034] The bearing portion 12 is a portion into which a shaft (not shown) used to rotate the winding core 10 can be inserted, and has a cylindrical shape. The cross-sectional shape of the bearing portion 12 is not particularly limited, and may be c...

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PUM

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Abstract

A film winding core (10) has: a cylindrical bearing portion (12); a plurality of blade portions (13) extending from the bearing portion (12) in the radial direction thereof; one or a plurality of rim portions (15, 15b, 15d) provided on the tips of the blade portions (13); and a plurality of film support portions (14) that are fixed to the rim portion (15, 15b, 15d) and that support a film (18). The support portions (14) comprise an elastic material such as sponge, rubber, or foam, and are in the shape of a semi-cylinder, a rectangular column, or a hollow semi-cylinder.

Description

technical field [0001] The present invention relates to a film winding core and a film roll using the core. Background technique [0002] The long film is manufactured by a known method such as extrusion molding, and is stored and shipped after being wound up on a cylindrical core. When the film is stored after being wound up on a cylindrical core, the film may be strained (deformed) and unwinding of the film may be hindered. Such a problem is pointed out in Patent Document 1, for example. [0003] Patent Document 1 describes a winding core configured to prevent the strain of the web due to winding. Specifically, after the ribbon is wound around the core so that the outer peripheral portion of the core and the ribbon are attached, the core is shrunk in its radial direction. In addition, the core is expanded in the radial direction to increase the adhesion between the outer peripheral portion of the core and the ribbon, and then the ribbon is unwound from the core. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H75/10
CPCB65H2701/1752B65H75/08B65H18/28B65H2701/535B65H2701/37B65H75/04B65H75/10B65H75/20
Inventor 能见俊祐佐柳俊一郎
Owner NITTO DENKO CORP
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