CN113733708A - Method for manufacturing copper foil die-cut piece - Google Patents
Method for manufacturing copper foil die-cut piece Download PDFInfo
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- CN113733708A CN113733708A CN202010198053.4A CN202010198053A CN113733708A CN 113733708 A CN113733708 A CN 113733708A CN 202010198053 A CN202010198053 A CN 202010198053A CN 113733708 A CN113733708 A CN 113733708A
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- copper foil
- die
- layer
- protective film
- sheet
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 239000011889 copper foil Substances 0.000 title claims abstract description 126
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 22
- 239000010410 layer Substances 0.000 claims abstract description 89
- 230000001681 protective effect Effects 0.000 claims abstract description 75
- 238000004080 punching Methods 0.000 claims abstract description 68
- 239000012790 adhesive layer Substances 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims description 65
- 239000000853 adhesive Substances 0.000 claims description 57
- 230000001070 adhesive effect Effects 0.000 claims description 57
- 239000002390 adhesive tape Substances 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 31
- 239000002699 waste material Substances 0.000 claims description 25
- 239000013067 intermediate product Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims 2
- 210000000746 body region Anatomy 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Printed Circuit Boards (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention relates to a manufacturing method of a copper foil die-cut piece, which comprises a protective film layer, a copper foil layer, a double-sided adhesive layer and a release paper layer which are sequentially arranged from top to bottom, wherein the outline of the protective film layer comprises a superposition section and a staggered section, the superposition section is superposed with the outline of the copper foil layer, and the staggered section is positioned on the surface of the copper foil layer and is staggered with the outline of the copper foil layer; in the preparation process, the first auxiliary release film sheet is added at the position to be punched of the protective film sheet, so that the protective film sheet to be punched is separated from the copper foil sheet, the copper foil is protected from being influenced during punching, and no knife mark exists. Compared with the prior art, the invention has the advantages of no tool mark on the surface of the copper foil, high precision of the protective film layer, high dimensional precision of the product and the like.
Description
Technical Field
The invention relates to the technical field of die cutting, in particular to a manufacturing method of a copper foil die-cut piece.
Background
The current copper foil products have increasingly strict requirements on appearance and size, and the copper foil with the thickness of about 0.05 is required to be manufactured without any pits and creases; the copper foil product shown in fig. 1 comprises a protective film layer, a copper foil layer, a double-sided adhesive layer and a release paper layer; the protective film layer is rectangular, the copper foil layer is rectangular with a gap, three edges of the protective film layer are overlapped with the boundary of the copper foil layer, and the three edges are overlapped sections; the other edge of the protective film layer is just positioned on the surface of the copper foil layer, and the edge is a staggered section; in the process of punching the staggered section of the punching protective film layer, because the staggered section is just positioned on the surface of the copper foil layer, the direct punching can cause a knife mark on the copper foil, so that the product can not meet the requirements of customers; in addition, if the copper foil layer and the protective film layer are punched and cut at first, then the protective film layer is attached to the copper foil layer by the attaching machine, the attaching precision is +/-1, products with small tolerance cannot be manufactured, and the protective film edge is not aligned with the gap position of the copper foil on the products.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for manufacturing a copper foil die-cut piece.
The purpose of the invention can be realized by the following technical scheme:
a manufacturing method of a copper foil die-cut piece comprises a protective film layer, a copper foil layer, a double-sided adhesive layer and a release paper layer which are sequentially arranged from top to bottom, wherein the outline of the protective film layer comprises an overlapping section and a staggered section, the overlapping section is overlapped with the outline of the copper foil layer, and the staggered section is positioned on the surface of the copper foil layer and is staggered with the outline of the copper foil layer; the manufacturing method comprises the following steps:
(a) sequentially attaching the release paper sheet and the double-sided adhesive tape on the bottom supporting adhesive tape;
(b) sequentially attaching a copper foil sheet, a second auxiliary release film sheet and a protective film sheet to the surface of the double-sided adhesive material of the intermediate product obtained in the step (a), wherein the surface of the copper foil sheet is divided into a die cutting area directly attached to the first auxiliary release film sheet and a main body area directly attached to the protective film sheet; punching the outlines of the staggered sections in the die cutting area by adopting a staggered section punching cutting die, and connecting the outlines of the staggered sections obtained by two adjacent punching processes end to end; the first auxiliary release film sheet is pulled away and the waste material on the protective film sheet is removed; pasting the protective film sheet on the copper foil sheet by using a laminating machine;
(c) and (c) punching the outer contour of the copper foil die-cut piece on the protective film sheet, the copper foil sheet, the double-faced adhesive material and the release paper sheet of the intermediate product in the step (b) by using an outer contour punching cutting die, and discharging waste materials to obtain the copper foil die-cut piece.
And the distance between the boundary of the die cutting area and the main body area and the outline of the staggered section is 1-5 mm.
One side edge of the second auxiliary release film is a boundary line between the die cutting area and the main body area, and the other side edge of the second auxiliary release film is overlapped with the edge of the copper foil sheet.
The double-sided adhesive layer is provided with a strip-shaped adhesive-free area extending along the advancing direction of the bottom supporting material belt, and the strip-shaped adhesive-free area divides the double-sided adhesive layer into two areas; the step (a) is as follows: sequentially attaching the release paper sheet, the double-faced adhesive tape material and the second auxiliary release film to the bottom supporting adhesive tape; and punching the non-adhesive area outline of the double-sided adhesive layer on the surfaces of the second auxiliary release film and the double-sided adhesive material by adopting a double-sided adhesive tape punching cutter die, and connecting the non-adhesive area outlines obtained by two adjacent punching processes end to end.
The protective film sheet is insulating single-sided adhesive, and the adhesive surface of the insulating single-sided adhesive is adhered to the copper foil layer.
The insulating single-sided adhesive is PET single-sided adhesive.
The protective film layer is a rectangle with three sides coinciding with the outline of the copper foil layer.
The thickness of the copper foil layer is 0.05 mm.
According to the invention, the auxiliary release film is arranged between the punching position of the protective film and the copper foil, when the contour of the staggered section of the protective film is punched, the knife mark of the die-cutting prop is on the auxiliary release film and cannot appear on the copper foil, so that the copper foil is protected, then the auxiliary release film is pulled out from the edge part of the protective film sheet, the protective film sheet and the copper foil sheet are completely pasted by the pasting machine, and the production requirement and the quality of the copper foil are met.
In addition, the staggered sections obtained by punching the protective film sheet by the staggered section punching cutter die are all connected end to end, so that the waste material of the protective film sheet is a continuous strip shape and is easy to discharge; similarly, the waste material in the non-adhesive area of the double-sided adhesive material is also a continuous strip, which is also beneficial to waste discharge.
In addition, the staggered section punching cutting die and the double-sided adhesive tape punching cutting die are only used for punching transverse lines along the material belt conveying direction, and all the longitudinal lines are completed by the final outer contour punching cutting die in one step, so that the positioning problem in the transverse direction is not involved among the three cutting dies, and the processing precision of the product is high.
Compared with the prior art, the invention has the following advantages:
(1) the auxiliary release film is adopted to protect the copper foil layer, so that no knife mark is generated on the surface of the copper foil layer, and the quality requirement of a copper foil product is met;
(2) through designing the die-cut cutting die of complex double faced adhesive tape (once die-cut cutting die), the die-cut cutting die of the section of staggering (the die-cut cutting die of secondary) and the die-cut cutting die of outline (the die-cut cutting die of cubic) for whole die-cut process does not relate to the accurate positioning along material area direction of delivery, and the machining precision of copper foil cross cutting spare is high.
Drawings
FIG. 1 is a schematic structural view of a copper foil die-cut piece according to the present invention;
FIG. 2 is a schematic diagram of a manufacturing method according to the present invention;
FIG. 3 is a schematic structural view of a die cutting prop and die cutting levels used in the present invention;
FIG. 4 is a schematic view of a production method in comparative example 1;
FIG. 5 is a schematic structural view of a die-cutting prop and die-cutting levels used in comparative example 1;
FIG. 6 is a schematic view of a production method in comparative example 2;
in the figure, 1 is a protective film layer, 2 is a copper foil layer, 3 is a double-sided adhesive layer, 4 is a release paper layer, 5 is a copper foil die-cutting piece, 6 is a backing tape, 7 is a release paper sheet, 8 is a double-sided adhesive material, 9 is a second auxiliary release film sheet, 10 is a copper foil sheet, 11 is a protective film sheet, 12 is a first auxiliary release film sheet, 15 is a double-sided adhesive tape die-cutting knife die, 16 is a staggered section die-cutting knife die, 17 is an outer contour die-cutting knife, 18 is a contour of a double-sided adhesive-free area, 19 is a staggered section contour, 20 is an outer contour, 21 is waste discharge of the double-sided adhesive-free area, 22 is waste discharge of the second auxiliary release film sheet and the protective film sheet, 23 is a folding line, and 24 is a third auxiliary release film sheet.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
A method for manufacturing a copper foil die-cut piece is shown in figure 1, the copper foil die-cut piece obtained by processing in the embodiment comprises a protective film layer 1, a copper foil layer 2, a double-sided adhesive layer 3 and a release paper layer 4 which are sequentially arranged from top to bottom, wherein the outline of the release paper layer 4, the outline of the double-sided adhesive layer 3 and the outline of the copper foil layer 2 are superposed, and the two layers are rectangular with unfilled corners and formed by splicing two rectangles; the protection film layer 1 is rectangular, is attached to the surface of the copper foil layer 2 and is exactly the same as one rectangular shape of the copper foil layer 2, namely the protection film layer 1 is a rectangle with three edges superposed with the outline of the copper foil layer 2; the protective film sheet 11 is an insulating single-sided adhesive, the adhesive surface of the insulating single-sided adhesive is bonded with the copper foil layer 2, and the insulating single-sided adhesive is a PET single-sided adhesive in the embodiment; the thickness of the copper foil layer 2 was 0.05 mm. The outline of the protective film layer 1 comprises a superposed section and a staggered section, the superposed section is superposed with the outline of the copper foil layer 2, and the staggered section is positioned on the surface of the copper foil layer 2 and is staggered with the outline of the copper foil layer 2; the double-sided adhesive layer 3 is provided with a strip-shaped adhesive-free area which divides the double-sided adhesive layer 3 into two areas.
As shown in fig. 2, the method for manufacturing the copper foil die-cut piece comprises the following steps:
(a) sequentially attaching the release paper sheet 7, the double-faced adhesive material 8 and the second auxiliary release film sheet 9 to the backing adhesive tape 6; adopting a double-sided adhesive tape punching cutting die 15 to punch out the outline of the non-adhesive area of the double-sided adhesive layer 3 on the surfaces of the second auxiliary release film sheet 9 and the double-sided adhesive material 8, enabling the outlines of the non-adhesive areas obtained by two adjacent times of punching to be connected end to end, and then carrying out waste discharge 21 of the double-sided adhesive tape non-adhesive area, wherein the waste discharge 21 of the double-sided adhesive tape non-adhesive area is a continuous strip and is easy to discharge waste due to the end to end connection of the outlines of the non-adhesive areas. The structure of the cutting die of the double-sided adhesive tape punching cutting die 15 is shown in fig. 3, and a die cutting blade for punching the outline 18 of the double-sided adhesive tape non-adhesive area is arranged on the double-sided adhesive tape punching cutting die 15;
(b) sequentially attaching a copper foil sheet 10, a first auxiliary release film sheet 12 and a protective film sheet 11 to the surface of the double-sided adhesive tape material 8 of the intermediate product obtained in the step (a), wherein the surface of the copper foil sheet 10 is divided into a die cutting area directly attached to the first auxiliary release film sheet 12 and a main body area directly attached to the protective film sheet 11, one side edge of the first auxiliary release film is a boundary line between the die cutting area and the main body area, the other side edge of the first auxiliary release film is overlapped with the edge of the copper foil sheet 10, and the distance between the boundary line between the die cutting area and the main body area and the outline of the staggered section is 1 mm; punching the contours of the mistaken opening sections in a die cutting area by using a staggered section punching cutting die 16, and connecting the contours of the staggered sections obtained by two adjacent punching processes end to end; the first auxiliary release film sheet 12 is drawn away and the waste material on the protective film sheet 11 is removed, such as the second auxiliary release film sheet and the protective film sheet waste material waste 22 in fig. 2; a laminating machine is adopted to flatly attach the protective film sheet 11 on the copper foil sheet 10, wherein the structure of the staggered section punching cutting die 16 is shown in fig. 3, and a die cutter for punching out a staggered section outline 19 of the protective film layer is arranged on the staggered section punching cutting die 16;
(c) and (b) punching the outer contour of the copper foil die-cut piece 5 on the protective film sheet 11, the copper foil sheet 10, the double-faced adhesive material 8 and the release paper sheet 7 of the intermediate product in the step (b) by using an outer contour punching cutting die 17, and discharging waste materials to obtain the copper foil die-cut piece 5, wherein the structure of the outer contour punching cutting die 17 is shown as 4, and a die cutter for punching the outer contour 20 is arranged on the outer contour punching cutting die 17.
Example 2
A method for manufacturing a copper foil die-cut piece is shown in figure 1, the copper foil die-cut piece obtained by processing in the embodiment comprises a protective film layer 1, a copper foil layer 2, a double-sided adhesive layer 3 and a release paper layer 4 which are sequentially arranged from top to bottom, wherein the outline of the release paper layer 4, the outline of the double-sided adhesive layer 3 and the outline of the copper foil layer 2 are superposed, and the two layers are rectangular with unfilled corners and formed by splicing two rectangles; the protection film layer 1 is rectangular, is attached to the surface of the copper foil layer 2 and is exactly the same as one rectangular shape of the copper foil layer 2, namely the protection film layer 1 is a rectangle with three edges superposed with the outline of the copper foil layer 2; the protective film sheet 11 is an insulating single-sided adhesive, the adhesive surface of the insulating single-sided adhesive is bonded with the copper foil layer 2, and the insulating single-sided adhesive is a PET single-sided adhesive in the embodiment; the thickness of the copper foil layer 2 was 0.05 mm. The outline of the protective film layer 1 comprises a superposed section and a staggered section, the superposed section is superposed with the outline of the copper foil layer 2, and the staggered section is positioned on the surface of the copper foil layer 2 and is staggered with the outline of the copper foil layer 2; the double-sided adhesive layer 3 is provided with a strip-shaped adhesive-free area which divides the double-sided adhesive layer 3 into two areas.
As shown in fig. 2, the method for manufacturing the copper foil die-cut piece comprises the following steps:
(a) sequentially attaching the release paper sheet 7, the double-faced adhesive material 8 and the second auxiliary release film sheet 9 to the backing adhesive tape 6; adopting a double-sided adhesive tape punching cutting die 15 to punch out the outline of the non-adhesive area of the double-sided adhesive layer 3 on the surfaces of the second auxiliary release film sheet 9 and the double-sided adhesive material 8, enabling the outlines of the non-adhesive areas obtained by two adjacent times of punching to be connected end to end, and then carrying out waste discharge 21 of the double-sided adhesive tape non-adhesive area, wherein the waste discharge 21 of the double-sided adhesive tape non-adhesive area is a continuous strip and is easy to discharge waste due to the end to end connection of the outlines of the non-adhesive areas. The structure of the cutting die of the double-sided adhesive tape punching cutting die 15 is shown in fig. 3, and a die cutting blade for punching the outline 18 of the double-sided adhesive tape non-adhesive area is arranged on the double-sided adhesive tape punching cutting die 15;
(b) sequentially attaching a copper foil sheet 10, a first auxiliary release film sheet 12 and a protective film sheet 11 to the surface of the double-sided adhesive tape material 8 of the intermediate product obtained in the step (a), wherein the surface of the copper foil sheet 10 is divided into a die cutting area directly attached to the first auxiliary release film sheet 12 and a main body area directly attached to the protective film sheet 11, one side edge of the first auxiliary release film is a boundary line between the die cutting area and the main body area, the other side edge of the first auxiliary release film is overlapped with the edge of the copper foil sheet 10, and the distance between the boundary line between the die cutting area and the main body area and the outline of the staggered section is 5 mm; punching the contours of the mistaken opening sections in a die cutting area by using a staggered section punching cutting die 16, and connecting the contours of the staggered sections obtained by two adjacent punching processes end to end; the first auxiliary release film sheet 12 is drawn away and the waste material on the protective film sheet 11 is removed, such as the second auxiliary release film sheet and the protective film sheet waste material waste 22 in fig. 2; a laminating machine is adopted to flatly attach the protective film sheet 11 on the copper foil sheet 10, wherein the structure of the staggered section punching cutting die 16 is shown in fig. 3, and a die cutter for punching out a staggered section outline 19 of the protective film layer is arranged on the staggered section punching cutting die 16;
(c) and (b) punching the outer contour of the copper foil die-cut piece 5 on the protective film sheet 11, the copper foil sheet 10, the double-faced adhesive material 8 and the release paper sheet 7 of the intermediate product in the step (b) by using an outer contour punching cutting die 17, and discharging waste materials to obtain the copper foil die-cut piece 5, wherein the structure of the outer contour punching cutting die 17 is shown as 4, and a die cutter for punching the outer contour 20 is arranged on the outer contour punching cutting die 17.
Comparative example 1
The comparative example is a manufacturing method of a copper foil die-cut piece in the prior art, and as shown in fig. 4, the manufacturing method comprises the following steps:
(a) sequentially attaching the release paper sheet 7, the double-faced adhesive material 8 and the second auxiliary release film sheet 9 to the backing adhesive tape 6; punching the outline of the non-adhesive area of the double-sided adhesive layer 3 on the surfaces of the second auxiliary release film sheet 9 and the double-sided adhesive material 8 by using a double-sided adhesive tape punching cutting die 15, and discharging waste, wherein the structure of the used double-sided adhesive tape punching cutting die 15 is shown in fig. 5;
(b) and (b) sequentially attaching a copper foil sheet 10 and the punched protective film layer 1 to the surface of the double-sided adhesive material 8 of the intermediate product obtained in the step (a), and punching the outer contour of the product by using an outer contour punching cutter die 17 to obtain a copper foil die-cut piece with a protective film.
The protective film on the copper foil is attached, and is not obtained by cutting a cutter, so that a product cannot have a cutter mark, but the protective film on the copper foil is completely attached by using an attaching machine, the attaching precision is +/-1, the product with smaller tolerance cannot be manufactured, and the position of the protective film edge is not aligned with the position of a copper foil notch on the product.
Comparative example 2
The comparative example is a manufacturing method of a copper foil die-cut piece in the prior art, and comprises the following steps:
processing a folding line on the bottom supporting adhesive tape 6, then attaching materials on two sides of the folding line of the bottom supporting adhesive tape 6, attaching the protective film sheet 11 and the third auxiliary release film sheet 24 on one side of the folding line, attaching the release paper sheet, the double-faced adhesive material and the third auxiliary release film sheet 24 on the other side of the folding line, and simultaneously punching and cutting the outline of a double-faced adhesive tape non-adhesive area and the staggered section outline of the protective film by adopting a cutting die as shown in fig. 6; and discharging waste, removing the two auxiliary release film sheets, folding the backing adhesive tape in half, opening the backing adhesive tape to enable the double faced adhesive tape to be attached to the surface of the release paper sheet, forming a layered stacking material of the protective film sheet, the copper foil sheet, the double faced adhesive tape material, the release paper sheet and the backing adhesive tape, and then punching the outer contour of the copper foil die-cut piece.
The protective film on the copper foil is attached to a non-cutter die-cut film after being folded in half, so that the product does not have cutter marks, but the number of materials consumed in folding is large, the folding precision can only reach +/-0.3 MM, and the error is large.
Compared with the processing process in the prior art, the invention attaches the release film on the position of the protective film to be processed on the protective film sheet, then attaches the protective film, and performs the second step of punching, wherein the knife mark of the cutter is on the release film but not on the copper foil, then the release film is drawn out from the protective film, and then the protective film is pasted and leveled by a pasting machine. The mode ensures that the copper foil is not influenced during punching and improves the appearance; but also ensures the dimensional accuracy of the protective film.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (8)
1. The manufacturing method of the copper foil die-cut piece comprises a protective film layer (1), a copper foil layer (2), a double-sided adhesive layer (3) and a release paper layer (4) which are sequentially arranged from top to bottom, wherein the outline of the protective film layer (1) comprises a superposition section and a staggered section, the superposition section is superposed with the outline of the copper foil layer (2), and the staggered section is positioned on the surface of the copper foil layer (2) and is staggered with the outline of the copper foil layer (2); the manufacturing method is characterized by comprising the following steps:
(a) sequentially attaching the release paper sheet (7) and the double-faced adhesive tape material (8) to the bottom supporting adhesive tape (6);
(b) sequentially attaching a copper foil sheet (10), a first auxiliary release film sheet (12) and a protective film sheet (11) to the surface of the double-sided adhesive material (8) of the intermediate product obtained in the step (a), wherein the surface of the copper foil sheet (10) is divided into a die cutting area directly attached to the first auxiliary release film sheet (12) and a main body area directly attached to the protective film sheet (11); punching the profile of the staggered section in the die cutting area by adopting a staggered section punching cutting die (16) and connecting the profiles of the staggered sections obtained by two adjacent punching processes end to end; the first auxiliary release film sheet (12) is pulled away and the waste material on the protective film sheet (11) is removed; flatly pasting the protective film sheet (11) on the copper foil sheet (10) by adopting a laminating machine;
(c) and (b) punching the outer contour of the copper foil die-cut piece (5) on the protective film sheet (11), the copper foil sheet (10), the double-sided adhesive tape material (8) and the release paper sheet (7) of the intermediate product in the step (b) by using an outer contour punching cutter die (17), and discharging waste materials to obtain the copper foil die-cut piece (5).
2. The method of manufacturing a die-cut piece of copper foil according to claim 1, wherein a distance between a boundary line of the die-cut area and the body area and an outline of the offset section is 1 to 5 mm.
3. The method for manufacturing a die-cut piece of copper foil according to claim 2, wherein one side edge of the first auxiliary release film is a boundary line between the die-cut region and the body region, and the other side edge coincides with an edge of the copper foil sheet (10).
4. The method for manufacturing a copper foil die-cut piece according to claim 1, wherein a strip-shaped glue-free area extending along the advancing direction of the backing material tape is provided on the two-side glue layer (3) and divides the two-side glue layer (3) into two areas; the step (a) is as follows: sequentially attaching a release paper sheet (7), a double-sided adhesive material (8) and a second auxiliary release film sheet (9) to the bottom supporting adhesive tape (6); and punching the non-adhesive area outline of the double-sided adhesive layer (3) on the surfaces of the second auxiliary release film sheet (9) and the double-sided adhesive material (8) by adopting a double-sided adhesive tape punching cutter die (15), and connecting the non-adhesive area outlines obtained by two adjacent punching processes end to end.
5. The method for manufacturing a die-cut piece of copper foil according to claim 1, wherein the protective film sheet (11) is an insulating single-sided adhesive, and the adhesive surface of the insulating single-sided adhesive is adhered to the copper foil layer (2).
6. The method for manufacturing the copper foil die-cut piece according to claim 5, wherein the insulating single-sided adhesive is PET single-sided adhesive.
7. The method for manufacturing a die-cut piece of copper foil according to claim 1, wherein the protective film layer (1) has a rectangular shape with three sides coinciding with the outline of the copper foil layer (2).
8. The method for manufacturing a copper foil die-cut piece according to claim 1, wherein the thickness of the copper foil layer (2) is 0.05 mm.
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| CN202010198053.4A CN113733708B (en) | 2020-05-29 | 2020-05-29 | Manufacturing method of copper foil die-cut piece |
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| CN202010198053.4A CN113733708B (en) | 2020-05-29 | 2020-05-29 | Manufacturing method of copper foil die-cut piece |
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| CN115320214A (en) * | 2022-08-10 | 2022-11-11 | 南京金陵金箔集团股份有限公司 | Preparation process of special-shaped gold foil |
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| CN107498981A (en) * | 2017-07-14 | 2017-12-22 | 泛泰大西(常州)电子科技股份有限公司 | A kind of production technology of four side shading rubber belt |
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|---|---|---|---|---|
| CN115320214A (en) * | 2022-08-10 | 2022-11-11 | 南京金陵金箔集团股份有限公司 | Preparation process of special-shaped gold foil |
| CN115320214B (en) * | 2022-08-10 | 2024-02-27 | 南京金陵金箔集团股份有限公司 | Preparation process of special-shaped gold foil |
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| CN113733708B (en) | 2023-05-23 |
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Address after: 201108 the 1 story 1F101 room 2, 2059 metropolitan Road, Minhang District, Shanghai. Patentee after: Shanghai Haobai Zhizao Precision Electronics Co.,Ltd. Address before: 201108 the 1 story 1F101 room 2, 2059 metropolitan Road, Minhang District, Shanghai. Patentee before: HOPINES ELECTRONIC TECHNOLOGY (SHANGHAI) Co.,Ltd. |