A wasteless die cutting method for a product area

Abstract

This invention provides a die-cutting method with zero waste in the product area, which can completely remove PSA waste in a single waste removal process, improving the die-cutting production efficiency of discontinuous PSA product components. The method uses a first cutting edge to punch PSA products to obtain irregularly shaped PSA strips on the upper surface of the product film. Each irregularly shaped PSA strip includes a set of convex contour strips for each PSA product area and convex connecting strips for connecting adjacent convex contour strips. The first cutting edge is a series of linear cutting edges arranged sequentially along the width of the PSA strip. The surface area of ​​each convex contour strip covers the corresponding PSA product. A gap is left between the rear edge of each set of convex connecting strips and the front boundary of the width area of ​​the PSA product. The second cutting edge is a closed blade structure that conforms to the overall outer contour of the PSA product. The second cutting edge punches the discontinuous PSA products on the irregularly shaped PSA strips onto the product film. Afterwards, the waste from the product film is completely removed by the PSA waste punched by the second cutting edge.

Description

Technical Field

[0001] This invention relates to the technical field of die-cutting waste removal, specifically a die-cutting method that eliminates waste in the product area. Background Technology

[0002] In the die-cutting industry, existing technologies are undergoing changes such as... Figure 1 In the die-cutting process of the product shown, the existing technology cuts rectangular strips from the PSA on the first carrier belt using the first cutting edge. Then, the second cutting edge cuts several discontinuous sets of PSA products within the area of ​​the regularly shaped rectangular strips. These discontinuous PSA products are then laminated onto the product film. A second carrier belt is located at the bottom of the product film. After waste removal, the waste material on the product film and the PSA waste are discharged together. However, in this process, the width of the rectangular strips is greater than the width of the PSA products. Therefore, the second cutting edge needs to separate the outer and inner widths of the product. As a result, while forming several discontinuous PSA products, the second cutting edge also cuts the PSA waste into multiple discontinuous structures. This means that discontinuous PSA waste is simultaneously placed between each discontinuous PSA product. Consequently, multiple waste removal structures are required to completely remove the PSA waste during subsequent waste removal operations. Therefore, the removal of die-cutting waste from discontinuous PSA products has become a major problem hindering the efficiency of die-cutting. Summary of the Invention

[0003] To address the aforementioned issues, this invention provides a die-cutting method with zero waste in the product area, which can completely remove PSA waste in a single waste removal process, thereby improving the die-cutting production efficiency of discontinuous PSA product components.

[0004] A die-cutting method for producing waste-free product areas is characterized by: punching PSA products with a first cutting edge to obtain irregularly shaped PSA strips on the upper surface of the product film, wherein the irregularly shaped PSA strips include a set of convex contour strips for each PSA product area and a forward connecting strip for connecting adjacent convex contour strips; the first cutting edge is a line cutting edge arranged sequentially along the width of the PSA strip; the surface area of ​​the convex contour strips covers the PSA product at the corresponding position; the rear end edge of each set of forward connecting strips is spaced from the front boundary of the width area of ​​the PSA product; the second cutting edge is a closed blade structure that conforms to the overall outer contour of the PSA product; the second cutting edge punches discontinuous PSA products on the irregularly shaped PSA strips onto the product film; and the waste material from the PSA strips punched by the second cutting edge is then completely discharged from the product film.

[0005] Its further features are: The first and second cutting edges are integrated on the same tool holder and arranged at intervals; The punching stroke of the PSA through the first blade is Y, which is the corresponding width of the rear convex shaping strip and the front convex connecting strip of the irregular PSA. Y is greater than the width of the PSA product, which ensures that no excess waste is generated after punching the irregular PSA strip. The second carrier belt drives the product film to move a step distance of X, where X is greater than Y, ensuring that the product film moves forward a certain distance each time, so that the two sets of blades can perform reliable die-cutting operations. Alignment holes are pre-set on both sides of the product film in the width direction. Guide posts are set on both sides of the blade holder in the width direction corresponding to the second blade. During die cutting, the guide posts are inserted into the alignment holes to ensure accurate and reliable die cutting. One end of the irregular PSA strip is provided with a contoured punching edge obtained by die cutting with the first blade, corresponding to the starting end of the PSA product. The second blade is provided with a rearward protruding blade part corresponding to the position of the contoured punching edge, which ensures that no independent PSA waste will remain after the second blade is die-cut. The first carrier belt drives the PSA strip to step onto the upper surface of the product film, and at the rear of the product film, the first carrier belt is peeled off from the lower surface of the PSA strip, ensuring that the die-cut irregular PSA strip of a set width is reliably laminated to the product film. The width of the PSA strip covers the width range of the molded PSA product; The width of the PSA is smaller than the width range of the product film; The length of the first blade completely cuts through the width of the PSA strip; The length range of the second blade is less than the width of the PSA strip, and the length range of the second blade corresponds exactly to the length range of the PSA product.

[0006] By adopting this invention, the first cutting edge is set as a non-straight-edge cutting edge, and the PSA product is punched through the first cutting edge to obtain irregularly shaped PSA strips on the upper surface of the product film. The irregularly shaped PSA strips include a set of convex contour strips for each PSA product area and a convex connecting strip for connecting adjacent convex contour strips. The first cutting edge is a line cutting edge arranged sequentially along the width of the PSA strip. The surface area of ​​the convex contour strips covers the PSA product at the corresponding position. The rear end edge of each set of convex connecting strips and the front boundary of the width area of ​​the PSA product are separated. Then, the second cutting edge is set as a closed cutting edge structure that is contoured along the overall outer contour of the PSA product. The discontinuous PSA product on the irregularly shaped PSA strip is punched onto the product film through the second cutting edge. After that, the waste of the product film will be completely discharged by the PSA waste punched by the second cutting edge. The waste can be discharged in a single discharge, which improves the die-cutting production efficiency of discontinuous PSA product components. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the PSA product corresponding to this invention; Figure 2 Obtained by die cutting using existing technology Figure 1 A top view of the product's manufacturing process; Figure 3 for Figure 2 The main view; Figure 4 A schematic diagram of discontinuous PSA waste generated by existing die-cutting technology; Figure 5 This is a structural diagram of a cutting die from existing technology; Figure 6 The method of the present invention is used for die cutting. Figure 1 A top view of the product; Figure 7 for Figure 6 The main view; Figure 8 This is a structural diagram of the die-cutting mold for the method of the present invention; Figure 9 This is a top view schematic diagram of the present invention after one waste discharge; The names corresponding to the serial numbers in the diagram are as follows: PSA product 100, interval L; Tool holder 10, first cutting edge 11, second cutting edge 12, rearward protruding cutting edge 121, guide post 13, irregular PSA strip 20, contour punching edge 201, rearward protruding contour strip 21, front protruding connecting strip 22, product coating 30, alignment hole 31, PSA material strip 40, second carrier strip 50, first carrier strip 60. Detailed Implementation

[0008] A waste-free die-cutting method for the product area, see Figure 1 , Figures 6-9 The first cutting edge 11 punches PSA products to obtain irregularly shaped PSA strips 20 on the upper surface of the product film 30. The irregularly shaped PSA strips 20 include a set of rear-convex contour strips 21 for each PSA product area and a front-convex connecting strip 22 for connecting adjacent rear-convex contour strips 21. The first cutting edge 11 is a line cutting edge arranged sequentially along the width of the PSA strip 40. The surface area of ​​the rear-convex contour strips 21 covers the corresponding PSA product 100. The rear end edge of each set of front-convex connecting strips 22 and the front boundary of the width area of ​​the PSA product 100 are separated by a gap L. The second cutting edge 12 is a closed cutting edge structure that is set to conform to the overall outer contour of the PSA product 100. The second cutting edge 12 punches the discontinuous PSA products on the irregularly shaped PSA strips 20 onto the product film 30. After that, the waste material of the product film 30 is completely discharged by the PSA waste punched by the second cutting edge 12.

[0009] In practice, the first cutting edge 11 and the second cutting edge 12 are integrated on the same tool holder 10 and arranged at intervals. The stamping stroke of the PSA strip 40 each time it passes through the first blade 11 is Y. Y is the corresponding width of the rear convex shaping strip 21 and the front convex connecting strip 22 of the irregular PSA strip 20. Y is greater than the width of the PSA product 100, which ensures that no excess waste is generated after the irregular PSA strip 20 is punched. The second carrier belt 50 drives the product heavy film 30 by a step distance of X, where X is greater than Y, ensuring that the product heavy film 30 moves forward a certain distance each time, so that the two sets of blades can perform reliable die-cutting operations. Alignment holes 31 are pre-set on both sides of the product film 30 in the width direction. Guide posts 13 are set on both sides of the blade holder 10 in the width direction corresponding to the second blade 12. During die cutting, the guide posts 13 are inserted into the alignment holes 31 to ensure accurate and reliable die cutting. One end of the irregular PSA strip 20 is provided with a contoured punching edge 201 obtained by die cutting with the first blade, corresponding to the starting end of the PSA product 100. The second blade 12 is provided with a rearward protruding blade portion 121 corresponding to the position of the contoured punching edge 201, which ensures that no independent PSA waste will remain after the second blade 121 is die-cut. The first carrier belt 60 drives the PSA material strip 40 to step onto the upper surface of the product film 30, and at the rear of the product film 30, the first carrier belt 60 is peeled off from the lower surface of the PSA material strip 40, ensuring that the PSA material strip of the set width after punching is reliably laminated onto the product film 30.

[0010] In a specific embodiment, the width of the PSA strip 40 covers the width range of the molded PSA product 100; the width of the PSA strip 40 is smaller than the width range of the product film 30. The length of the first cutting edge 11 completely cuts off the width of the PSA strip 40; The length of the second blade 12 is less than the width of the PSA strip 40, and the length of the second blade 12 corresponds exactly to the length of the PSA product 100.

[0011] The first cutting edge is set as a non-straight edge, and the PSA product is punched through the first cutting edge to obtain irregular PSA strips on the upper surface of the product film. The irregular PSA strips include a set of convex contour strips for each PSA product area and a convex connecting strip for connecting adjacent convex contour strips. The first cutting edge is a line cutting edge arranged sequentially along the width of the PSA strip. The surface area of ​​the convex contour strips covers the PSA product at the corresponding position. The rear end edge of each set of convex connecting strips is separated from the front boundary of the width area of ​​the PSA product. The second cutting edge is a closed cutting edge structure set along the overall outer contour of the PSA product. The discontinuous PSA products on the irregular PSA strips are punched onto the product film through the second cutting edge. After that, the waste of the product film will be completely discharged by the PSA waste punched by the second cutting edge. The waste can be discharged in a single discharge, which improves the die-cutting production efficiency of discontinuous PSA product components.

[0012] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0013] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A die-cutting method with zero waste in the product area, characterized in that: The process involves punching PSA products with a first cutting edge to obtain irregularly shaped PSA strips on the upper surface of the product film. The irregularly shaped PSA strips include a set of convex contour strips for each PSA product area and a forward connecting strip for connecting adjacent convex contour strips. The first cutting edge is a line cutting edge arranged sequentially along the width of the PSA strip. The surface area of ​​the convex contour strips covers the corresponding PSA product. The rear end edge of each set of forward connecting strips is spaced from the front boundary of the width area of ​​the PSA product. The second cutting edge is a closed blade structure that conforms to the overall outer contour of the PSA product. The process involves punching discontinuous PSA products on the irregularly shaped PSA strips onto the product film, and then the waste material from the product film is completely discharged by the PSA waste punched by the second cutting edge.

2. The die-cutting method for a waste-free product area according to claim 1, characterized in that: The first and second cutting edges are integrated on the same tool holder and arranged at intervals.

3. The die-cutting method for a waste-free product area according to claim 1, characterized in that: The stamping stroke of the PSA each time it passes through the first blade is Y, where Y is the corresponding width of the rear convex contour strip and the front convex connecting strip of the irregular PSA, and Y is greater than the width of the PSA product.

4. The die-cutting method for a waste-free product area according to claim 3, characterized in that: The second carrier belt drives the product film to move a step distance of X, where X is greater than Y.

5. The die-cutting method for a waste-free product area according to claim 1, characterized in that: Alignment holes are pre-set on both sides of the product film in the width direction, and guide posts are set on both sides of the blade holder in the width direction corresponding to the second blade. During die cutting, the guide posts are inserted into the alignment holes.

6. The die-cutting method for a waste-free product area according to claim 1, characterized in that: One end of the irregular PSA strip is provided with a contoured punching edge obtained by die cutting with a first blade, corresponding to the starting end of the PSA product. The second blade is provided with a rearward protruding blade portion corresponding to the position of the contoured punching edge.

7. The die-cutting method for a waste-free product area according to claim 1, characterized in that: The first carrier belt drives the PSA material belt to step onto the upper surface of the product heavy film, and at the rear of the product heavy film, the first carrier belt is peeled off from the lower surface of the PSA material belt.

8. The die-cutting method for a waste-free product area according to claim 1, characterized in that: The width of the PSA strip covers the width range of the molded PSA product; the width of the PSA is smaller than the width range of the product film.

9. The die-cutting method for a waste-free product area according to claim 1, characterized in that: The length of the first blade completely cuts through the width of the PSA strip.

10. The die-cutting method for a waste-free product area according to claim 1, characterized in that: The length range of the second blade is less than the width of the PSA strip, and the length range of the second blade corresponds exactly to the length range of the PSA product.

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