A preparation mold for a narrow frame double-sided adhesive product

Abstract

The present invention relates to a preparation mold for a narrow frame double-sided adhesive product, comprising a first cutting die and a second cutting die arranged in sequence according to the direction of a die-cutting assembly line, wherein the first cutting die comprises a first cutting die panel and an inner ring blade protruding from the first cutting die panel; the second cutting die comprises a second cutting die panel and an outer ring blade protruding from the second cutting die panel, wherein a protruding pressing area is arranged inside the outer ring blade. Compared with the prior art, the present invention uses a large pressure to make a serrated line segment protrusion to press a protective film onto a release film, so that the release film in the middle area to be discharged is tightly connected to the protective film at the line segment protrusion, and in the subsequent discharge process, only the adhesion between the protective film and the release film in the middle area to be discharged is increased, and the viscosity at the cutting point is not increased, thereby achieving an ideal waste discharge effect.

Description

Technical Field

[0001] The invention relates to a die-cutting die, in particular to a preparation die for a narrow-frame double-sided adhesive product. Background Art

[0002] Double-sided adhesive products with narrow outer frames have a large hollow area inside, see Figure 1 and Figure 2 There is a release film underneath the double-sided adhesive product. During the production process, the protective film on the back of the release film cannot be discarded immediately after being cut off. If this layer of protective film is discarded, the hollow area of ​​the product will be too large and unsupported, which will cause the overall deformation of the product.

[0003] When the finished product is attached to the release film of the finished material, the product is supported by the release film of the material, so the protective film can be removed at this step, and the blue release film can be discarded with this layer of protective film. For the specific process flow, please refer to the attached Figure 3 .

[0004] However, the viscosity of this layer of protective film cannot be too high. When the viscosity is too high, the cut part will still have great viscosity. The reason is that the viscosity of the protective film is related to the adhesive material of its bonding surface. The more bonding material, the stronger the viscosity. Although the enhanced viscosity can easily take away the release film during discharge, the adhesive material at the cut part will take away the release film on the product. When the viscosity is low, although the release film on the product will not be taken away, the release film inside the product cannot be discharged 100%. The release film that is not discharged cleanly needs to be removed manually, which will cause partial dirt on the product. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a preparation mold for a narrow frame double-sided adhesive product.

[0006] The technical solution of the present invention is based on the use of a low-viscosity protective film. Through the design of the mold, only the adhesion of the protective film and the release film in the middle area to be discharged is increased, while the viscosity of the cutting part is not increased, so as to achieve an ideal waste discharge effect.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] The mold for preparing the narrow frame double-sided adhesive product of the present invention comprises a first cutting die and a second cutting die which are sequentially arranged in the direction of the die-cutting assembly line, wherein:

[0009] The first cutting die comprises a first cutting die panel and an inner ring cutting edge protruding from the first cutting die panel;

[0010] The second cutting die comprises a second cutting die panel and a raised outer ring blade arranged on the second cutting die panel, wherein a raised pressing area is arranged inside the outer ring blade. The first cutting die panel and the second cutting die panel are also provided with fixing holes of the die around them.

[0011] Furthermore, the inner ring blade and the outer ring blade both form a closed geometric figure.

[0012] Furthermore, the area enclosed by the outer blade is larger than the area enclosed by the inner blade, that is, the outer blade is die-cut to obtain the outer contour of the narrow frame double-sided adhesive product, wherein a handle is also provided on the outer contour.

[0013] Furthermore, the pressing area includes a plurality of line segment-shaped protrusions.

[0014] Furthermore, the line segment type protrusion is one or more of a curve, a straight line or a return line protrusion. Designing a line segment type protrusion is the core point of the technical solution of the present invention, which is aimed at the fact that the existing narrow frame double-sided adhesive product mold cannot realize a single discharge of waste in the middle without affecting the release film on the product from being taken off. The line segment type protrusion in the present technical solution is a relatively blunt embossing knife, which is a regular or irregular line segment type with a narrow width. Its line segment type structure can generate a large pressure during molding while ensuring that it has a large contact area with the protective film. Through the large pressure, the line segment type protrusion presses the protective film onto the release film, so that the release film in the middle area to be discharged is tightly connected with the protective film at the protrusion. In the subsequent discharge process, only the adhesion between the protective film and the release film in the middle area to be discharged is increased, and the viscosity at the cutting point is not increased, thereby achieving an ideal waste discharge effect.

[0015] Furthermore, the minimum distance between the line segment protrusion and the inner ring blade is 0.5 to 2 mm. Within this range, a better pressing effect can be achieved without affecting the die cutting of the inner frame.

[0016] Furthermore, a plurality of line segment-shaped protrusions are distributed in parallel.

[0017] Furthermore, the geometric shapes enclosed by the inner ring blade and the outer ring blade are both rectangles, and the length of the pressing area is smaller than the length of the inner ring blade.

[0018] Compared with the prior art, the present invention uses a high pressure to make the line segment protrusion press the protective film onto the release film, so that the release film in the middle area to be discharged is tightly connected with the protective film at the line segment protrusion. In the subsequent discharge process, only the adhesion between the protective film and the release film in the middle area to be discharged is increased, and the viscosity of the cutting point is not increased, thereby achieving an ideal waste discharge effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the structure of a narrow frame double-sided adhesive product;

[0020] Figure 2 This is a schematic diagram of the structure of a narrow frame double-sided adhesive product when the release film has not been removed;

[0021] Figure 3 It is a molding process flow chart of a narrow frame double-sided adhesive product in the prior art;

[0022] Figure 4 It is a structural schematic diagram of a mold for preparing a narrow frame double-sided adhesive product in the present invention.

[0023] In the figure: 1, first cutting die, 2, second cutting die, 3, fixing hole, 11, first cutting die panel, 12, inner circle blade, 21, second cutting die panel, 22, outer circle blade, 23, pressing area, 231, line segment protrusion. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example

[0026] The mold for preparing the narrow frame double-sided adhesive product of the present invention comprises a first cutting die 1 and a second cutting die 2 which are arranged in sequence along the direction of the die-cutting assembly line. Figure 4 .

[0027] The first cutting die part 1 comprises a first cutting die panel 11 and an inner ring blade 12 protruding from the first cutting die panel 11 .

[0028] The second die plate 2 includes a second die plate panel 21 and a raised outer blade 22 on the second die plate panel 21. The outer blade 22 has a raised pressing area 23. The first die plate panel 11 and the second die plate panel 21 are also surrounded by mold fixing holes 3, see Figure 4 The inner blade 12 and the outer blade 22 both form a closed geometric figure. The area enclosed by the outer blade 22 is larger than the area enclosed by the inner blade 12. That is, the outer blade 22 is die-cut to obtain the outer contour of the narrow frame double-sided adhesive product, wherein the outer contour is also provided with a handle, see Figure 2 The pressing area 23 includes a plurality of line segment protrusions 231. The geometric shapes formed by the inner ring blade 12 and the outer ring blade 22 are both rectangular, and the length of the pressing area 23 is less than the length of the inner ring blade 12.

[0029] Design of line segment protrusion: The line segment protrusion 231 is one or more of a curve, a straight line or a return line protrusion. The design of the line segment protrusion 231 is the core point of the technical solution of the present invention. It is aimed at the existing narrow frame double-sided adhesive product mold that cannot realize a single discharge of waste in the middle without affecting the release film on the product from being taken off. The line segment protrusion 231 in the present technical solution is a relatively blunt embossing knife, which is a regular or irregular line segment with a narrow width. Its line segment structure will generate a large pressure during molding while ensuring that it has a large contact area with the protective film. Through the high pressure, the line segment protrusion 231 presses the protective film onto the release film, so that the release film in the middle area to be discharged is tightly connected with the protective film at the protrusion. In the subsequent discharge process, only the adhesion between the protective film and the release film in the middle area to be discharged is increased, and the viscosity at the cutting point is not increased, so as to achieve an ideal waste discharge effect.

[0030] The minimum distance between the line segment protrusion 231 and the inner ring blade 12 is 0.5-2 mm. Within this range, a better pressing effect can be achieved without affecting the die cutting of the inner frame. In specific implementation, multiple line segment protrusions 231 can be distributed in parallel.

[0031] In the specific application process of the lamination process, the first cutting die 1 and the second cutting die 2 in this embodiment are applied to the existing die cutting process, see Figure 3 The die-cutting of the outer contour of the product is realized through the die-cutting in the first step, and the auxiliary release film is removed after passing through the laminating machine. In the second step of die-cutting, the second cutting die 2 is used to press the protective film onto the release film through the serrated line segment protrusion 231 with a large pressure, so that the release film in the middle area to be discharged is tightly connected with the protective film at the line segment protrusion 231. In the subsequent discharge process, only the adhesion between the protective film and the release film in the middle area to be discharged is increased, and the viscosity of the cutting point is not increased. The protective film is removed on the laminating machine, thereby achieving an ideal waste discharge effect.

[0032] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A mold for preparing a narrow frame double-sided adhesive product, characterized in that: Including the following arranged in sequence according to the die-cutting line direction: A first cutting die (1) comprises a first cutting die panel (11) and an inner ring cutting edge (12) protruding from the first cutting die panel (11); A second cutting die (2) comprises a second cutting die panel (21) and a raised outer ring cutting edge (22) provided on the second cutting die panel (21), wherein a raised pressing area (23) is provided inside the outer ring cutting edge (22); The inner ring blade (12) and the outer ring blade (22) both form a closed geometric figure; The pressing area (23) comprises a plurality of line segment-shaped protrusions (231).

2. The mold for preparing a narrow frame double-sided adhesive product according to claim 1, characterized in that: The area enclosed by the outer ring blades (22) is larger than the area enclosed by the inner ring blades (12).

3. The mold for preparing a narrow frame double-sided adhesive product according to claim 1, characterized in that: The line segment protrusion (231) is one or more of a curve, a straight line or a return line protrusion.

4. The mold for preparing a narrow frame double-sided adhesive product according to claim 1, characterized in that: The minimum distance between the line segment-shaped protrusion (231) and the inner ring blade (12) is 0.5 to 2 mm.

5. The mold for preparing a narrow frame double-sided adhesive product according to claim 1, characterized in that: A plurality of line segment-shaped protrusions (231) are distributed in parallel.

6. The mold for preparing a narrow frame double-sided adhesive product according to claim 1, characterized in that: The geometric shapes enclosed by the inner ring blade (12) and the outer ring blade (22) are both rectangular, and the length of the pressing area (23) is smaller than the length of the inner ring blade (12).

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