A die cutting process for preventing cockling of a product

Abstract

The present application relates to a kind of anti-convolution product warping die cutting processing method, including first, handle release film is attached to auxiliary bearing film and carries out first punching, forms handle film contour line, then attach single-sided adhesive;Second punching is carried out, and T-shaped contour line is formed on single-sided adhesive, then discharge the waste material of single-sided adhesive outside T-shaped contour line, and auxiliary protective film is attached on single-sided adhesive, after winding, second punching material belt is obtained;Finally, discharge the waste material of auxiliary bearing film on second punching material belt and handle film contour line outside, and attach bearing material belt, then cutting is carried out to the edge of bearing material belt, and discharge edge waste material, after winding, it is obtained winding product.Compared with prior art, the present application improves the adhesion of die cutting product as a whole by using adhesive silicone film as discharge bearing film, and the die cutting product is clamped and fixed by cooperating with auxiliary protective film, to avoid product displacement or end warping, to ensure product quality.

Description

Technical Field

[0001] This invention belongs to the field of die-cutting technology and relates to a die-cutting method for preventing warping of rolled products. Background Technology

[0002] Die-cutting is widely used in industries such as electronics, automotive manufacturing, and flat panel displays due to its advantages of simple processing steps, ease of operation, and wide adjustable range. Its ease of processing is particularly prominent in the preparation of layered thin materials such as insulating materials, shock-absorbing materials, heat-resistant materials, adhesive materials, dustproof materials, and shielding materials. For example... Figure 1 The roll product shown includes a carrier strip 1 and a plurality of die-cut products 3 attached along the length direction of the carrier strip 1; wherein the die-cut products are as follows: Figure 2-4 As shown, it includes a T-shaped single-sided adhesive 301 and rectangular handle films 302 attached to the three ends of the T-shaped single-sided adhesive 301. The three sides of the rectangular handle films 302 are all located outside the T-shaped single-sided adhesive 301, and the three handle films 302 are separated from each other, forming an exposed adhesive area in the middle of the T-shaped single-sided adhesive 301. The die-cut product 3 adheres to the carrier strip 1 through this exposed adhesive area. Figure 4 As shown, due to the small bonding area, the edge of the die-cut product is prone to curling or even displacement during the winding and unwinding process, resulting in poor material handling efficiency and success rate in downstream automated processing, which in turn seriously affects the finished product yield. Summary of the Invention

[0003] The purpose of this invention is to provide a die-cutting method for preventing warping of rolled products in order to address the above-mentioned technical problems.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] A die-cutting process to prevent warping of rolled products, wherein the rolled product includes a carrier strip, an auxiliary protective film, and a plurality of die-cut products attached along the length direction between the carrier strip and the auxiliary protective film;

[0006] The die-cut product includes a T-shaped single-sided adhesive and handle films attached to the three ends of the T-shaped single-sided adhesive. The three handle films are separated from each other so that the middle part of the T-shaped single-sided adhesive is exposed and attached to the carrier strip.

[0007] The die-cutting process includes the following steps:

[0008] S1: The handle release film is attached to the auxiliary carrier film and the first punching is performed to form the handle film outline. Then, single-sided adhesive is attached to the handle release film to obtain the first punching strip.

[0009] S2: The first punched strip is punched a second time to form a T-shaped outline on the single-sided adhesive. Then, the single-sided adhesive waste outside the T-shaped outline is discharged, and an auxiliary protective film is attached to the single-sided adhesive. After winding, the second punched strip is obtained.

[0010] S3: Discharge the auxiliary carrier film and the waste material outside the outline of the handle film on the second punching strip, and attach the carrier strip. Then, trim and punch the edges of the carrier strip and discharge the edge waste. After winding, the roll product is obtained.

[0011] The carrier strip is an adhesive silicone film. Compared to commonly used carrier release films, adhesive silicone film can effectively improve the adhesion to die-cut products, especially the glue leakage area in the middle of the die-cut product, as well as the film on the three end handles, thereby preventing product displacement or end lifting.

[0012] Furthermore, the handle film is a rectangular handle film.

[0013] Furthermore, the three sides of the rectangular handle film are all located outside the T-shaped single-sided adhesive to facilitate the removal of the die-cut product from the carrier strip.

[0014] Furthermore, the handle film is a blue handle release film.

[0015] Further, in step S1, during the first punching, the first punching die includes a first die base plate, and a first rectangular cutter line, a second rectangular cutter line, and a third rectangular cutter line respectively disposed on the first die base plate. The first rectangular cutter line and the second rectangular cutter line are colinearly spaced along the length direction, and the third rectangular cutter line is perpendicularly disposed between the first rectangular cutter line and the second rectangular cutter line.

[0016] Furthermore, in step S2, during the second punching, the second punching die used includes a second die base plate and a T-shaped cutter line disposed on the second die base plate.

[0017] Furthermore, in step S3, the trimming and punching die used includes a trimming die base plate and a pair of straight cutter lines arranged side by side on the trimming die base plate.

[0018] Furthermore, the two ends of the straight blade line bend outwards and extend.

[0019] Furthermore, in step S3, the 180° peel strength of the adhesive silicone film is 1-10 g / ft (refer to standard GB / T2792-1998). Within this adhesive range, it provides good adhesion to prevent the die-cut product from shifting or lifting, while also ensuring that the die-cut product is easy to handle.

[0020] Furthermore, in step S3, the waste removal process for the second punching strip is as follows: using the auxiliary carrier film as the upper film material and the auxiliary protective film as the lower film material, the second punching strip is inverted and unwound, and then the auxiliary carrier film is pulled up and wound up, thereby collecting and discharging the waste material outside the outline of the handle film attached to the auxiliary carrier film.

[0021] Compared with existing technologies, this invention has the advantages of simple preparation process, easy operation, and high production efficiency. Furthermore, this invention uses an adhesive silicone film as the product shipping carrier film, which can cooperate with the exposed adhesive area of ​​the single-sided adhesive in the product to improve the adhesion to the product. At the same time, it also ensures the adhesion of the handle film on the three ends of the product, increases the bonding area of ​​the product, and ensures the positioning effect of the product. In addition, the area of ​​the adhesive silicone film that is not bonded to the product can be bonded with the auxiliary protective film, thereby achieving the effect of clamping and fixing the product, and avoiding the problem of large unwinding resistance in the downstream production process due to excessive exposed adhesive area of ​​the adhesive silicone film. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a roll material product;

[0023] Figure 2 This is a schematic diagram showing the distribution structure of the handle film in a die-cut product.

[0024] Figure 3 This is a schematic diagram of the T-shaped cutter line in die-cut products;

[0025] Figure 4 This is a structural diagram of the die-cut product;

[0026] Figure 5 This is a schematic diagram showing the curled-up state of a die-cut product.

[0027] Figure 6 This is a process flow diagram of step S1 in a die-cutting method for preventing the above-mentioned roll material product from warping, as described in the embodiment.

[0028] Figure 7 This is a schematic diagram of the first punching operation in the embodiment;

[0029] Figure 8 This is a schematic diagram of the structure of the first punching die in the embodiment;

[0030] Figure 9 This is a process flow diagram of step S2 in a die-cutting method for preventing the above-mentioned roll material product from curling up, as described in the embodiment.

[0031] Figure 10 This is a schematic diagram of the second punching operation in the embodiment;

[0032] Figure 11 This is a schematic diagram of the structure of the second punching die in the embodiment;

[0033] Figure 12 This is a process flow diagram of step S3 in a die-cutting method for preventing the above-mentioned roll material product from curling up, as described in the embodiment.

[0034] Figure 13 This is a schematic diagram of the edge trimming and punching process in the embodiment.

[0035] Figure 14 This is a schematic diagram of the edge trimming and punching die in the embodiment;

[0036] Figure 15 This is a diagram showing the adhesion effect of the adhesive silicone film on the die-cut product as a whole.

[0037] Explanation of markings in the diagram:

[0038] 1-Carrying material strip, 2-Auxiliary protective film, 3-Die-cut product, 301-T-type single-sided adhesive, 3011-Single-sided adhesive, 302-Handle film, 3021-Handle release film, 4-Auxiliary carrying film, 5-First die base plate, 6-First rectangular cut line, 7-Second rectangular cut line, 8-Third rectangular cut line, 9-Second die base plate, 10-T-type cut line, 11-Edge trimming die base plate, 12-Straight cut line. Detailed Implementation

[0039] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0040] Example:

[0041] A roll product includes a carrier strip 1, an auxiliary protective film 2, and a plurality of die-cut products 3 attached along the length direction between the carrier strip 1 and the auxiliary protective film 2; wherein the die-cut products are as follows: Figure 2-4 As shown, it includes a T-shaped single-sided adhesive 301 and rectangular handle films 302 attached to the three ends of the T-shaped single-sided adhesive 301. The three sides of the rectangular handle films 302 are all located outside the T-shaped single-sided adhesive 301, and the three handle films 302 are separated from each other so that the middle part of the T-shaped single-sided adhesive 301 is exposed and attached to the carrier strip 1.

[0042] A die-cutting process to prevent the aforementioned roll products from warping includes the following steps:

[0043] S1: As Figure 6 As shown, the blue handle release film 3021 is adhered to the auxiliary carrier film 4 and a first punching is performed (as shown). Figure 7As shown, three rectangular handle film outline lines are formed on the handle release film 3021, and then single-sided adhesive 3011 is attached to the handle release film 3021 to obtain the first punching strip;

[0044] The first punching die used is as follows: Figure 8 As shown, it includes a first die base plate 5, and a first rectangular die line 6, a second rectangular die line 7 and a third rectangular die line 8 respectively disposed on the first die base plate 5; the first rectangular die line 6 and the second rectangular die line 7 are arranged collinearly and spaced apart along the length direction, and the third rectangular die line 8 is perpendicularly disposed between the first rectangular die line 6 and the second rectangular die line 7.

[0045] S2: As Figure 9 As shown, the first punched strip is subjected to a second punching (e.g.) Figure 10 As shown, a T-shaped contour line is formed on the single-sided adhesive 3011, then the single-sided adhesive waste outside the T-shaped contour line is discharged, and an auxiliary protective film 2 is attached to the single-sided adhesive 3011. After winding, the second punching strip is obtained.

[0046] The second punching die used is as follows: Figure 11 As shown, it includes a second die base plate 9 and a T-shaped die line 10 disposed on the second die base plate 9;

[0047] S3: As Figure 12 As shown, with the auxiliary carrier film 4 as the upper film material and the auxiliary protective film 2 as the lower film material, the second punching strip is inverted and unwound, then pulled up and wound up the auxiliary carrier film 4, thereby collecting and discharging the waste material outside the outline of the handle film attached to the auxiliary carrier film 4. Then, the carrier strip 1 is attached to the upper layer, and the carrier strip 1 is trimmed and punched (e.g., ...). Figure 13 As shown), the edge waste is discharged, and the roll product is obtained after winding; wherein, the carrier material 1 used is an adhesive silicone film, and the 180° peel strength of the adhesive silicone film is 8g / ft.

[0048] The edge trimming and punching die used is as follows: Figure 14 As shown, it includes a trimming die base plate 11 and a pair of straight cutting lines 12 arranged side by side on the trimming die base plate 11, and the two ends of the straight cutting lines 12 bend outwards.

[0049] In the resulting roll product, an adhesive silicone film, which serves as the discharge carrier film, is used to improve the overall adhesion to the die-cut product (e.g., Figure 15 As shown in the figure, the die-cut product is clamped and fixed by cooperating with the auxiliary protective film 2 to avoid product displacement or end lifting, thus ensuring the quality of the finished product.

[0050] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any 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 invention should be within the protection scope of the present invention.

Claims

1. A die-cutting process for preventing warping of rolled products, characterized in that, The roll product includes a carrier strip (1), an auxiliary protective film (2), and multiple die-cut products (3) attached along the length direction between the carrier strip (1) and the auxiliary protective film (2); The die-cut product includes a T-shaped single-sided adhesive (301) and handle films (302) attached to the three ends of the T-shaped single-sided adhesive (301). The three handle films (302) are separated from each other so that the middle part of the T-shaped single-sided adhesive (301) is exposed and attached to the carrier strip (1). The die-cutting process includes the following steps: S1: The handle release film (3021) is attached to the auxiliary carrier film (4) and the first punching is performed to form the handle film outline on the handle release film (3021). Then, single-sided adhesive (3011) is attached to the handle release film (3021) to obtain the first punching strip. S2: The first punched strip is punched a second time to form a T-shaped outline on the single-sided adhesive (3011). Then, the single-sided adhesive waste outside the T-shaped outline is discharged, and an auxiliary protective film (2) is attached to the single-sided adhesive (3011). After winding, the second punched strip is obtained. S3: Discharge the auxiliary carrier film (4) and the waste material outside the outline of the handle film on the second punching strip, and attach the carrier strip (1), then trim and punch the carrier strip (1) and discharge the edge waste. After winding, the roll product is obtained; wherein, the carrier strip (1) is an adhesive silicone film.

2. The die-cutting method for preventing warping of rolled products according to claim 1, characterized in that, The handle film (302) is a rectangular handle film.

3. The die-cutting method for preventing warping of rolled products according to claim 2, characterized in that, The three sides of the rectangular handle film are all located outside the T-shaped single-sided adhesive (301).

4. The die-cutting method for preventing warping of rolled products according to claim 2, characterized in that, The handle film (302) is a blue handle release film.

5. A die-cutting method for preventing warping of rolled products according to claim 2, characterized in that, In step S1, during the first punching, the first punching die used includes a first die base plate (5), and a first rectangular cutter line (6), a second rectangular cutter line (7), and a third rectangular cutter line (8) respectively disposed on the first die base plate (5). The first rectangular cutter line (6) and the second rectangular cutter line (7) are arranged collinearly and spaced apart along the length direction, and the third rectangular cutter line (8) is perpendicularly disposed between the first rectangular cutter line (6) and the second rectangular cutter line (7).

6. The die-cutting method for preventing warping of rolled products according to claim 1, characterized in that, In step S2, during the second punching, the second punching die used includes a second die base plate (9) and a T-shaped cutter line (10) provided on the second die base plate (9).

7. The die-cutting method for preventing warping of rolled products according to claim 1, characterized in that, In step S3, the trimming and punching die used includes a trimming die base plate (11) and a pair of straight cutter lines (12) arranged side by side on the trimming die base plate (11).

8. A die-cutting method for preventing warping of rolled materials according to claim 7, characterized in that, The straight blade line (12) is bent outward at both ends.

9. A die-cutting method for preventing warping of rolled products according to claim 1, characterized in that, In step S3, the 180° peel strength of the adhesive silicone film is 1-10 g / ft.

10. A die-cutting method for preventing warping of rolled products according to claim 1, characterized in that, In step S3, the waste removal process of the second punching strip is as follows: with the auxiliary carrier film (4) as the upper film material and the auxiliary protective film (2) as the bottom film material, the second punching strip is inverted and unwound, and then the auxiliary carrier film (4) is pulled up and wound up, so that the waste material outside the handle film outline on the auxiliary carrier film (4) is collected and discharged together.

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