CN112776086B - Narrow strip die cutting piece capable of preventing poor stripping and manufacturing method thereof - Google Patents

Abstract

The invention relates to a narrow strip die-cutting piece for preventing poor stripping and a manufacturing method thereof, wherein the method comprises the following steps: (1) material belt laminating: attaching the auxiliary release film (1) to the double-sided adhesive without the base material to form a material belt; (2) punching the material belt: utilizing a die cutting machine provided with a cutting board to cut the material belt downwards from the direction of the auxiliary release film (1); (3) a waste discharge process: and discharging waste materials from the punched material belt to obtain a strip die-cutting piece, wherein the strip die-cutting piece sequentially comprises a base material adhesive-free finished product (21) and self-carrying base paper (3). Compared with the prior art, the included angle between the inner edge and the knife board is close to 90 degrees, so that the auxiliary release film is not extruded any more during die cutting, the adhesive tape can be retained on the self-contained release paper, and the problem of poor subsequent stripping is fundamentally solved.

Description

Narrow strip die-cut piece for preventing poor peeling and manufacturing method thereof

technical field

The invention relates to the field of die-cut production, in particular to a narrow die-cut for preventing poor stripping and a manufacturing method thereof.

Background technique

Die-cut parts without substrate double-sided adhesive generally include auxiliary release film, substrate-free adhesive and base paper without substrate from top to bottom, as shown in Figure 2. Due to the auxiliary release film with different peeling force and double-sided adhesive with different viscosities The existence of the surface glue material makes the quality of the produced die-cut parts uneven.

Due to product requirements, it is necessary to punch the non-substrate double-sided adhesive tape into long and narrow strips with a width of about 0.8MM for the next step of production or testing.

After the auxiliary release film is punched, it is easy to shift, and the position without the silicone oil layer on the side sticks to the non-substrate adhesive, so that the narrow strip cannot be retained on the base paper without the substrate, as shown in Figure 6, resulting in subsequent peeling Bad and other defects.

Contents of the invention

The object of the present invention is to provide a narrow strip die-cut piece and its manufacturing method to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

A method for making a narrow strip die-cut piece that prevents poor peeling, the method includes the following steps:

(1) Tape bonding: attach the auxiliary release film to the non-substrate double-sided adhesive to form a tape;

(2) Strip punching: using a die-cutting machine equipped with a knife plate, punch the strip downward from the direction of the auxiliary release film;

(3) Waste discharge process: discharge the waste from the punched strip to obtain narrow die-cut pieces.

Further, the substrate-free double-sided adhesive includes a substrate-free adhesive layer and self-contained base paper. When laminating, the auxiliary release film is bonded to the substrate-free adhesive layer.

Further, multiple pairs of die-cutting knives are fixed on the knife plate, and the distance between each pair of knives is consistent with the width of the narrow die-cut piece.

Further, the punching layer of the cutter includes an auxiliary release film and a substrate-free adhesive layer sequentially from top to bottom.

Further, the waste materials include the waste materials of the frame without substrate adhesive formed after die cutting and the entire auxiliary release film containing the waste materials of the auxiliary release film.

After punching, the auxiliary release film is punched to form auxiliary release film waste, and the non-substrate adhesive layer is die-cut into non-substrate adhesive finished products and non-substrate adhesive frame waste on both sides. The mold waste is located directly above the finished adhesive-free product.

Further, the cutter includes an inner edge close to the auxiliary release film waste and an outer edge far away from the auxiliary release film waste during die-cutting, and the angle between the inner edge and the outer edge is 25-35°.

Further, the angle between the inner front and the outer front is 30°.

Further, the angle between the inner edge and the blade is 90°.

A narrow strip die-cut piece manufactured by the above-mentioned method, the narrow strip die-cut piece sequentially includes a substrate-free glue product and self-contained base paper.

Further, the width of the base-free adhesive finished product is less than or equal to 8mm.

Compared with the prior art, the present invention has the following advantages:

(1) In the present invention, the angle between the inner front and the knife plate is close to 90°, so that the auxiliary release film can no longer be squeezed during die cutting, so that the adhesive tape can be retained on the self-contained release paper, fundamentally The problem of poor subsequent peeling is solved, and the prior art is not aware of this;

(2) In the present invention, only through some small improvements, the peeling failure rate is reduced from nearly 40% in the prior art to less than 4%.

Description of drawings

Fig. 1 is a die-cut product figure of the present invention;

Fig. 2 is a die-cutting hierarchical diagram in embodiment 1;

Fig. 3 is the top view of die cutter in embodiment 1;

Fig. 4 is the front view of die cutter in comparative example 1;

Fig. 5 is the front view of die cutter in embodiment 1;

Fig. 6 is a schematic diagram of die-cutting in Comparative Example 1;

The labels in the figure show: auxiliary release film 1, auxiliary release film waste 11, base material adhesive layer 2, base adhesive adhesive finished product 21, base adhesive adhesive frame waste 22, self-contained base paper 3, cutter 4, outer Forward 41, inside forward 42.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

A kind of manufacture method of the narrow strip die-cut part that prevents peeling off bad, this narrow strip die-cut part, as shown in Figure 1, comprises non-substrate adhesive finished product 21 and self-carrying base paper 3 successively, the width of non-substrate adhesive finished product 21 is 8mm , the method includes the following steps:

(1) Tape lamination: attach the auxiliary release film 1 to the double-sided adhesive without substrate to form a tape; wherein, the double-sided adhesive without substrate includes adhesive layer 2 without substrate and self-contained base paper 3, When bonding, the auxiliary release film 1 is bonded to the substrate-free adhesive layer 2 .

(2) Strip punching: using a die-cutting machine equipped with a knife plate, the strip is punched downward from the direction of the auxiliary release film 1; among them, there are many pairs of knives for die-cutting fixed on the knife plate 4. As shown in Figure 3, the distance between each pair of cutters 4 is consistent with the width of the narrow die-cut piece. The punching layer of the cutter 4 includes an auxiliary release film 1 and a substrate-free adhesive layer 2 sequentially from top to bottom, as shown in FIG. 2 . As shown in Fig. 5 , the cutter 4 includes an inner front 42 close to the auxiliary release film waste 11 and an outer front 41 far away from the auxiliary release film waste 11 during die cutting, and the angle between the inner front 42 and the outer front 41 is 30°. The angle between the inner front 42 and the knife plate is 90°.

(3) Waste discharge process: discharge the waste from the punched strip to obtain narrow die-cut pieces. Wherein, the waste materials include the base material glue-free frame waste 22 formed after punching and the entire auxiliary release film 1 including the auxiliary release film waste 11 . After punching, the auxiliary release film 1 is punched to form auxiliary release film waste 11, and the substrate-free adhesive layer 2 is punched into substrate-free adhesive finished products 21 and substrate-free adhesive frame waste 22 on both sides, Auxiliary release film waste 11 is located directly above the finished product 21 without substrate adhesive.

In this embodiment, the included angle between the inner edge 42 and the knife plate is 90°, so that the auxiliary release film can no longer be squeezed during die cutting, so that the adhesive tape can remain on the self-contained release paper, so that the peeling defect rate Less than 4%.

Comparative example 1

The difference from Example 1 is that, as shown in Figure 4, the angle between the inner edge 42 and the blade is 75°, and the auxiliary release film is squeezed during die-cutting, making it difficult to keep the adhesive tape on the self-contained release paper , making the peeling failure rate as high as 40%.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention to other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or modify the equivalent of equivalent changes. Example. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims (5)

1. A method of making a narrow die cut piece to prevent delamination failure, comprising the steps of:

(1) Material belt laminating: attaching the auxiliary release film (1) to the double-sided adhesive without the base material to form a material belt;

(2) Punching a material belt: utilizing a die cutting machine provided with a cutting board to cut the material belt downwards from the direction of the auxiliary release film (1); a plurality of pairs of cutters (4) for die cutting are fixedly arranged on the cutter plate; the cutter (4) comprises an inner edge (42) close to the auxiliary release film waste (11) and an outer edge (41) far away from the auxiliary release film waste (11) during die cutting, the included angle between the inner edge (42) and the outer edge (41) is 25-35 degrees, the included angle between the inner edge (42) and the cutter board is 90 degrees, and the punching layers of the cutter (4) sequentially comprise the auxiliary release film (1) and the substrate-free adhesive layer (2) from top to bottom;

(3) Waste discharge process: the method comprises the steps of discharging waste materials from a punched material belt to obtain a narrow belt die cutting piece, wherein the narrow belt die cutting piece sequentially comprises a base material adhesive-free finished product (21) and base paper (3) in the belt, the width of the base material adhesive-free finished product (21) is less than or equal to 8mm, and the waste materials comprise base material adhesive-free frame waste materials (22) formed after punching and an auxiliary release film (11) contained in the whole auxiliary release film (1).

2. The method for manufacturing a narrow strip die-cut piece capable of preventing poor peeling as claimed in claim 1, wherein the double-sided adhesive tape without base material comprises a glue layer without base material (2) and a base paper (3), and the auxiliary release film (1) is attached to the glue layer without base material (2) during the attaching.

3. A method of making a narrow strip die cut piece to prevent peeling failure as claimed in claim 1 wherein the spacing of each pair of knives (4) is in accordance with the width of the narrow strip die cut piece.

4. A method of making a narrow strip die cut to prevent peel failure as claimed in claim 1 wherein said inner edge (42) is angled 30 ° to said outer edge (41).

5. A narrow strip die cut article made by the method of any one of claims 1 to 4.

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