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Web jointing apparatus, web jointing method, and functional film manufacturing method

A jointing device and jointing method technology, which is applied in the direction of thin material processing, sending objects, winding strips, etc., can solve the problems of discomfort and high cleanliness

Active Publication Date: 2015-05-27
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the butt-joining device for rolls disclosed in Patent Document 1 has a problem that it is not suitable for processes requiring high cleanliness (cleanliness) (for example, the production process of functional films used in liquid crystal display devices).

Method used

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  • Web jointing apparatus, web jointing method, and functional film manufacturing method
  • Web jointing apparatus, web jointing method, and functional film manufacturing method
  • Web jointing apparatus, web jointing method, and functional film manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0088] On the surface of the reel 34 of the old roll 26 sent out at 30m / min by a rod coater with 15cc / m 2 A coating liquid having firm coating properties is applied, dried at 80° C. for 3 minutes, and the dried roll 34 is wound up by the winding device 64 . Next, use figure 1 The illustrated web splicing device 10 performs butt splicing of webs. The upper blade drum 42 has a diameter of 351.9 mm, the lower blade drum 44 has a diameter of 351.9 mm, and the first engagement drum 46 has a diameter of 352.5 mm. The level difference of the surface of the upper blade drum 42 was 5 mm. As the roll, TAC (triacetyl cellulose) having a width of 1490 mm and a thickness of 80 μm was used.

[0089] The joint portion formed by the rear end of the old roll and the front end of the new roll and the front end of the cut old roll were visually observed with a light scope. Figure 15 Indicates the observation result. Such as Figure 15 As shown, scratches 100 are hardly observed within 100...

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Abstract

The present invention provides a web jointing apparatus, a web jointing method and a functional film manufacturing method, wherein the web jointing apparatus has the following advantages: no generation of pollutants such as dust, jointing precision improvement and web quality improvement, wherein, an upper edge drum (42) and a lower edge drum (44) simultaneously cut off the web (34) of an old drum (26) and the web (54) of a new roller (30). The clamping force of the upper edge drum (42) and the lower edge drum (44) to the web (34) and the web (54) are reduced thereby drawing out the web (34) after cutting-off. The web (34) and the web (54) after cutting-off are conveyed through the lower edge drum (44). The lower edge drum (44) and a first bonding drum (46) are clamped, and the bonding strip which is held on the first bonding drum (46) is adhibited to the back end of the web (34) and the front end of the web (54) for bonding.

Description

technical field [0001] The present invention relates to a web bonding device, a web bonding method, and a method for producing a functional film, in particular to bonding the ends of a web of an old roll and a web of a new roll to each other The splicing device of the reel, the splicing method of the reel and the manufacturing method of the functional film. Background technique [0002] As an existing web splicing device, it is known to hang the rear end of the web on the old roll and the front end of the web on the new roll in a state where the web is spliced. A device of a so-called butt-joint method in which tapes are bonded and bonded (Patent Document 1). [0003] The web joining device described in Patent Document 1 includes: a cutting drum provided with a cutting blade and capable of rotating at the same speed as the web transport speed; and a cutting drum capable of rotating at the same speed as the web transport speed. Also a splicing drum; a splicing drum that kee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H19/18B65H19/20
CPCB65H19/18B65H19/20B65H35/06B65H2301/418B65H2301/4631B65H2301/51532B65H2301/5162B65H2301/517
Inventor 松村善仁
Owner FUJIFILM CORP
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