Manufacturing method of copper foil die cutting piece

A production method and technology of die-cutting parts, which are applied in chemical instruments and methods, lamination auxiliary operations, lamination devices, etc., can solve the problem of copper foil knife marks, misalignment of protective film edges and copper foil gaps, and unsatisfactory products. Customer requirements and other issues to achieve the effect of high machining accuracy

Active Publication Date: 2021-12-03
上海昊佰智造精密电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current copper foil products have increasingly strict requirements on appearance and size, requiring that copper foil with a thickness of about 0.05 should not have any pits or creases after production; figure 1 The copper foil products shown include protective film layer, copper foil layer, double-sided adhesive layer and release paper layer; the protective film layer is rectangular, the copper foil layer is rectangular with a gap, and the three sides of the protective film layer are in contact with the copper The boundary of the foil layer coincides, and these three sides are coincident sections; the other side of the protective film layer is just on the surface of the copper foil layer, and this side is a staggered section; during the punching process of the staggered section of the protective film layer, Since the staggered section is just on the surface of the copper foil layer, direct punching will cause knife marks on the copper foil, causing the product to fail to meet customer requirements; The solution of attaching the protective film layer to the copper foil layer has a lamination accuracy of ±1, and products with small tolerances cannot be produced. This product will cause misalignment between the edge of the protective film and the notch of the copper foil

Method used

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  • Manufacturing method of copper foil die cutting piece
  • Manufacturing method of copper foil die cutting piece
  • Manufacturing method of copper foil die cutting piece

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A kind of manufacturing method of copper foil die-cut piece, such as figure 1 As shown, the copper foil die-cut piece processed in this embodiment includes a protective film layer 1, a copper foil layer 2, a double-sided adhesive layer 3 and a release paper layer 4 arranged in sequence from top to bottom, wherein the release paper layer 4. The outer contours of the double-sided adhesive layer 3 and the copper foil layer 2 overlap, and they are all rectangular shapes with missing corners, which are formed by splicing two rectangles; the protective film layer 1 is rectangular, and is attached to the copper foil layer 2 The surface of the surface is exactly the same as one of the rectangular shapes of the copper foil layer 2, that is, the protective film layer 1 is a rectangle whose three sides coincide with the outline of the copper foil layer 2; the protective film sheet 11 is an insulating single-sided adhesive, and the insulating sheet The adhesive surface of the adhes...

Embodiment 2

[0037] A kind of manufacturing method of copper foil die-cut piece, such as figure 1As shown, the copper foil die-cut piece processed in this embodiment includes a protective film layer 1, a copper foil layer 2, a double-sided adhesive layer 3 and a release paper layer 4 arranged in sequence from top to bottom, wherein the release paper layer 4. The outer contours of the double-sided adhesive layer 3 and the copper foil layer 2 overlap, and they are all rectangular shapes with missing corners, which are formed by splicing two rectangles; the protective film layer 1 is rectangular, and is attached to the copper foil layer 2 The surface of the surface is exactly the same as one of the rectangular shapes of the copper foil layer 2, that is, the protective film layer 1 is a rectangle whose three sides coincide with the outline of the copper foil layer 2; the protective film sheet 11 is an insulating single-sided adhesive, and the insulating sheet The adhesive surface of the adhesi...

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Abstract

The invention relates to a manufacturing method of a copper foil die cutting piece, the copper foil die cutting piece comprises a protective film layer, a copper foil layer, a double-faced adhesive tape layer and a release paper layer which are sequentially arranged from top to bottom, the contour of the protective film layer comprises a coincident section and a staggered section, the coincident section coincides with the contour of the copper foil layer, the staggered section is positioned on the surface of the copper foil layer and is staggered from the outline of the copper foil layer; in the preparation process, a layer of first auxiliary release film sheet is additionally arranged at the to-be-punched position of the protective film sheet, the to-be-punched protective film sheet and the to-be-punched copper foil sheet are separated, and the copper foil is protected against influence and no tool mark exists during punching. Compared with the prior art, the method has the advantages of no tool mark on the surface of the copper foil, high precision of the protective film layer, high product size precision and the like.

Description

technical field [0001] The invention relates to the technical field of die-cutting, in particular to a method for manufacturing a die-cut piece of copper foil. Background technique [0002] The current copper foil products have increasingly strict requirements on appearance and size, requiring that copper foil with a thickness of about 0.05 should not have any pits or creases after production; figure 1 The copper foil products shown include protective film layer, copper foil layer, double-sided adhesive layer and release paper layer; the protective film layer is rectangular, the copper foil layer is rectangular with a gap, and the three sides of the protective film layer are in contact with the copper The boundary of the foil layer coincides, and these three sides are coincident sections; the other side of the protective film layer is just on the surface of the copper foil layer, and this side is a staggered section; during the punching process of the staggered section of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/02B32B38/00B32B38/10
CPCB32B37/02B32B38/0004B32B38/10
Inventor 刘晓鹏蒋建国周姿
Owner 上海昊佰智造精密电子股份有限公司
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