Die cutting process and die cutting production line

Abstract

The invention discloses a die cutting process and a die cutting production line. The die cutting process comprises the following steps: compounding a film material on a first backing film; die cutting is conducted on the film material so that the film material can form a first set of products and a middle film material; wherein the first group of products comprises a plurality of products which are uniformly distributed at intervals in the length direction of the membrane material, cutting areas are formed in the positions, corresponding to the products in the first group of products, of the middle membrane material, and the distance between any two adjacent cutting areas in the length direction of the membrane material is equal to the size of the products in the length direction of the membrane material; separating the middle membrane material from the first bottom supporting membrane, so that each product in the first group of products is separated from the middle membrane material and falls on the first bottom supporting membrane; the part, located between every two adjacent cutting areas, of the middle film material is subjected to die cutting, so that a second set of products and film material waste are formed, and the second set of products comprise a plurality of products evenly distributed in the length direction of the film material at intervals; and separating the second group of products from the membrane material waste. The utilization rate of the membrane material can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of die cutting, and in particular to a die cutting process and a die cutting production line. Background Art

[0002] When cutting sticky film materials, a certain gap is set between two adjacent products. When the gap between the products is small, the products will stick together, affecting the separation of the products. In the related art, in order to facilitate the separation of the products from the film material, the gap between the two adjacent products is set larger, which results in more waste after the film material is die-cut, reducing the utilization rate of the film material. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first aspect of the present invention provides a die-cutting process capable of improving the utilization rate of film materials.

[0004] The second aspect of the present invention also provides a die-cutting production line.

[0005] A die-cutting process according to an embodiment of the first aspect of the present invention comprises the following steps:

[0006] Compounding the membrane material on the first supporting membrane;

[0007] The film material is die-cut to form a first group of products and an intermediate film material; wherein the first group of products includes a plurality of products evenly spaced along the length direction of the film material, and the intermediate film material is provided with a cut-out area at a position corresponding to each product in the first group of products, and the distance between any two adjacent cut-out areas in the length direction of the film material is equal to the size of the product in the length direction of the film material;

[0008] Separating the intermediate film material from the first supporting film so that each product in the first group of products is separated from the intermediate film material and falls on the first supporting film;

[0009] Die-cutting the portion of the intermediate film material between two adjacent cut-off areas to form a second group of products and film material waste, wherein the second group of products includes a plurality of products evenly spaced along the length direction of the film material;

[0010] The second group of products is separated from the membrane waste.

[0011] A die-cutting process according to an embodiment of the first aspect of the present invention has at least the following technical effects:

[0012] In the die-cutting process of the present application, a film material is compounded on a first supporting film and then the film material on the first supporting film is die-cut, so that the film material is die-cut to form a first group of products and an intermediate film material, wherein the first group of products includes a plurality of products evenly spaced along the length direction of the film material, and a cut-out area is formed on the intermediate film material corresponding to the position of each product in the first group of products, and the distance between any two adjacent cut-out areas in the length direction of the film material is equal to the size of the product in the length direction of the film material. At this time, the first supporting film is compounded with the intermediate film material and the first group of products, and the intermediate film material is separated from the first supporting film, so that each product in the first group of products attached to the first supporting film is separated from the intermediate film material, and the portion of the intermediate film material located between each two adjacent cut-out areas is continuously die-cut, so that the intermediate film material is die-cut into a second group of products and film material waste, wherein the second group of products includes a plurality of products evenly spaced along the length direction of the film material, and then each product in the second group of products is separated from the film material waste. It can be learned from the above die-cutting process that the embodiment of the present invention forms the first group of products and the second group of products respectively through two die-cutting operations, and adjacent products in each group of products obtained by each die-cutting have a gap with the same size as the product in the length direction of the film material, thereby effectively avoiding the adhesion of products; and since each product in the second group of products is formed by partial die-cutting between every two adjacent cut-out areas on the intermediate film material, and since the distance between any two adjacent cut-out areas in the length direction of the film material is equal to the size of the product in the length direction of the film material, the film material can be efficiently utilized in the length direction of the film material with basically no waste, thereby improving the utilization rate of the film material.

[0013] According to a die-cutting process of an embodiment of the first aspect of the present invention, the intermediate film material and the first base film are separated, comprising the following steps:

[0014] Compounding the support film on the side of the intermediate film material away from the first supporting film;

[0015] The first base film with the first group of products attached thereto is separated from the intermediate film material.

[0016] According to a die-cutting process of an embodiment of the first aspect of the present invention, a portion of the intermediate film material located between two adjacent cut-off areas is die-cut to form a second group of products and film material waste, including the following steps:

[0017] Laminating the side of the intermediate film material away from the supporting film onto the second supporting film;

[0018] Separate the support film and the intermediate film material;

[0019] The intermediate film material is die-cut so that the portion of the intermediate film material between two adjacent cut-off areas is die-cut to form each product in the second group of products, and the remaining portion of the intermediate film material forms film material waste.

[0020] According to a die-cutting process of an embodiment of the first aspect of the present invention, the second group of products is separated from the film material waste, comprising the following steps:

[0021] The waste film material is separated from the second supporting film, so that the second group of products is separated from the waste film material and falls on the second supporting film.

[0022] According to a die-cutting process of an embodiment of the first aspect of the present invention, the product includes a first sheet and a second sheet attached to the first sheet, the contour of the second sheet projected on the first sheet is located inside the contour range of the first sheet; the film includes a first film layer and a second film layer, and the film is composited on a first base film through the first film layer;

[0023] Die-cutting the film material to form the first group of products and the intermediate film material includes the following steps:

[0024] The first film layer and the second film layer are die-cut at the same time, so that the film material is cut into a plurality of composite sheets and an intermediate film material, the plurality of composite sheets are evenly spaced along the length direction of the film material, and the composite sheets each include a first sheet material formed by cutting the first film layer and a semi-finished sheet material formed by cutting the second film layer; wherein the contour of the semi-finished sheet material projected on the first sheet material coincides with the contour of the first sheet material; and a cutting area is formed at the position of the intermediate film material corresponding to each composite sheet material;

[0025] The semi-finished sheet is die cut to form a second sheet.

[0026] According to a die-cutting process of an embodiment of the first aspect of the present invention, a portion of the intermediate film material located between two adjacent cut-off areas is die-cut to form a second group of products and film material waste, including the following steps:

[0027] Die-cutting a portion of the second film layer in the intermediate film material between two adjacent cut-off areas to form a second sheet material;

[0028] The portion of the first film layer in the intermediate film material located between two adjacent cut-off areas is die-cut to form a first sheet material.

[0029] According to a die-cutting process of an embodiment of the first aspect of the present invention, each product is provided with a process hole group, and the following steps are included before the film material is composited on the first base film:

[0030] Die-cutting the film material to form a plurality of positioning holes;

[0031] The film material is die-cut to form a plurality of process hole groups.

[0032] According to a die-cutting process of an embodiment of the first aspect of the present invention, die-cutting a film material to form a plurality of positioning holes includes the following steps:

[0033] The film material is positioned through the 2n+2m positioning holes formed by the previous die-cutting, and 2n positioning holes are formed by die-cutting on the film material, wherein n≥1 and m≥1.

[0034] According to a die-cutting process of an embodiment of the first aspect of the present invention, the process hole group includes first process holes and second process holes that are alternately distributed, and die-cutting the film material to form a plurality of process hole groups includes the following steps:

[0035] The die cutting is performed in two steps to respectively form a first process hole and a second process hole on the film material.

[0036] A die-cutting production line according to a second embodiment of the present invention is used to implement the die-cutting process of the first embodiment.

[0037] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0039] Figure 1 This is a flow chart of a die-cutting process according to one embodiment of the present application;

[0040] Figure 2 A top view of a product formed by one embodiment of the present application;

[0041] Figure 3 A schematic diagram of the structure of a product formed by one embodiment of the present application;

[0042] Figure 4 This is a schematic diagram of the structure of a film material before being laminated to a first supporting film according to one embodiment of the present application;

[0043] Figure 5 for Figure 4 A schematic diagram of the structure after the film material is die-cut to form the first group of products and the intermediate film material;

[0044] Figure 6 for Figure 5 Schematic diagram of the structure of the intermediate film material;

[0045] Figure 7 for Figure 6 A schematic diagram of the structure of the second sheet material of the second group of products formed by die-cutting the second film layer of the intermediate film material;

[0046] Figure 8 for Figure 7A schematic diagram of the structure of the first sheet material of the second group of products formed by die-cutting the first film layer of the intermediate film material;

[0047] Fig. 9 for Figure 5 Schematic diagram of the structure of the film waste formed by die-cutting of the intermediate film material.

[0048] Reference numerals:

[0049] Membrane material 100, positioning hole 110;

[0050] The first group of products 200;

[0051] Intermediate film material 300, cut-away area 310;

[0052] Product 400, first sheet 410, second sheet 420, process hole group 430, first process hole 431, second process hole 432;

[0053] The second group of products 500;

[0054] Membrane material waste 600. DETAILED DESCRIPTION

[0055] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0056] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, front, back, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0058] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0059] Reference below Figures 1 to 9 A die-cutting process of an embodiment of the first aspect of the present invention is described in detail.

[0060] refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 8 , according to a die-cutting process of an embodiment of the first aspect of the present invention, the die-cutting process includes but is not limited to step S100, step S200, step S300, step S400 and step S500:

[0061] Step S100, compounding the film material 100 on the first supporting film;

[0062] Step S200, die-cutting the film material 100 so that the film material 100 forms a first group of products 200 and an intermediate film material 300; wherein the first group of products 200 includes a plurality of products 400 evenly spaced along the length direction of the film material 100, and the intermediate film material 300 is formed with a cut-out area 310 at a position corresponding to each product 400 in the first group of products 200, and the distance between any two adjacent cut-out areas 310 in the length direction of the film material 100 is equal to the size of the product 400 in the length direction of the film material 100;

[0063] Step S300, separating the intermediate film material 300 and the first supporting film, so that each product 400 in the first group of products 200 is separated from the intermediate film material 300 and falls on the first supporting film;

[0064] Step S400, die-cutting the portion of the intermediate film 300 between two adjacent cut-off areas 310 to form a second group of products 500 and film waste 600, wherein the second group of products 500 includes a plurality of products 400 evenly spaced along the length direction of the film 100;

[0065] Step S500 , separating the second group of products 500 from the waste film material 600 .

[0066] In the die-cutting process of the present application, the film material 100 is laminated on the first base film, and then the film material 100 on the first base film is die-cut, so that the film material 100 is die-cut to form a first group of products 200 and an intermediate film material 300, wherein the first group of products 200 includes a plurality of products 400 evenly spaced along the length direction of the film material 100, and the intermediate film material 300 is formed with a cut-out area 310 at the position corresponding to each product 400 in the first group of products 200, and the distance between any two adjacent cut-out areas 310 in the length direction of the film material 100 is equal to the size of the product 400 in the length direction of the film material 100. At this time, the film material 100 on the first base film is An intermediate film material 300 and a first group of products 200 are compounded. The intermediate film material 300 is separated from the first base film, thereby separating the individual products 400 in the first group of products 200 attached to the first base film from the intermediate film material 300. The portion of the intermediate film material 300 between every two adjacent cut-off areas 310 is continuously die-cut, thereby die-cutting the intermediate film material 300 into a second group of products 500 and film material waste 600, wherein the second group of products 500 includes a plurality of products 400 evenly spaced along the length direction of the film material 100. Then, the individual products 400 in the second group of products 500 are separated from the film material waste 600. It can be seen from the above die-cutting process that each product 400 in the second group of products 500 is formed by partial die-cutting between every two adjacent cut-out areas 310 on the intermediate film material 300. Since the distance between any two adjacent cut-out areas 310 in the length direction of the film material 100 is equal to the size of the product 400 in the length direction of the film material 100, the arrangement of each product 400 on the film material 100 is closely connected, thereby improving the utilization rate of the film material 100.

[0067] It can be understood that by dividing the products 400 into the first group of products 200 and the second group of products 500, the individual products 400 in the first group of products 200 are first die-cut on the film material 100, and then the individual products 400 in the first group of products 200 attached to the first base film are separated from the intermediate film material 300. At this time, since the distance between any two adjacent products 400 in the first group of products 200 in the length direction of the film material 100 is equal to the size of the product 400 in the length direction of the film material 100, the gap between the two products 400 is large, so that the individual products 400 in the first group of products 200 can be smoothly separated from the intermediate film material 300; and then the part between every two adjacent cut-out areas 310 on the intermediate film material 300 is die-cut to form the individual products 400 in the second group of products 500 and the film material waste 600. At this time, there is no connection relationship between the individual products 400 in the second group of products 500, and the individual products 400 in the second group of products 500 can also be smoothly separated from the film material waste 600.

[0068] refer to Figure 5 and Figure 6 In some embodiments of the present invention, step S300 includes but is not limited to the following steps:

[0069] Step S310, compounding the support film on the side of the intermediate film material 300 away from the first supporting film;

[0070] Step S320 , separating the first base film to which the first group of products 200 are attached from the intermediate film material 300 .

[0071] It is understandable that after the film material 100 is die-cut to form the first group of products 200 and the intermediate film material 300, the first group of products 200 and the intermediate film material 300 are both attached to the first base film, and the support film is compounded on the side of the intermediate film material 300 away from the first base film, and then the intermediate film material 300 attached to the support film is separated from the first base film attached with the first group of products 200, so that each product 400 in the first group of products 200 can be smoothly separated to the first base film. The intermediate film material 300 is supported and protected by the support film to reduce the deformation of the intermediate film material 300 during separation, thereby reducing the possibility of positional displacement of the product 400 when the intermediate film material 300 is die-cut.

[0072] refer to Figure 6 and Figure 8 In some embodiments of the present invention, step S400 includes but is not limited to the following steps:

[0073] Step S410, laminating the side of the intermediate film material 300 away from the supporting film onto the second base film;

[0074] Step S420, separating the support film and the intermediate film material 300;

[0075] Step S430 , die-cutting the intermediate film material 300 , so that the portion of the intermediate film material 300 between two adjacent cut-off areas 310 is die-cut to form each product 400 in the second group of products 500 , and the remaining portion of the intermediate film material 300 forms film material waste 600 .

[0076] It can be understood that after the intermediate film material 300 is separated from the first backing film, the intermediate film material 300 is attached to the second backing film, the second backing film is compounded on the side of the intermediate film material 300 away from the support film, and then the support film is separated from the intermediate film material 300, and then the intermediate film material 300 on the second backing film is die-cut, and the portion of the intermediate film material 300 located between every two adjacent cut-off areas 310 is die-cut to form each product 400 in the second group of products 500, and the remaining portion of the intermediate film material 300 is die-cut to form film material waste 600.

[0077] refer to Figure 8 and Fig. 9 In one embodiment of the present invention, step S500 includes but is not limited to the following steps:

[0078] Step S510: Separate the waste film material 600 from the second supporting film, so that the second group of products 500 are separated from the waste film material 600 and fall onto the second supporting film.

[0079] It can be understood that after die-cutting the intermediate film 300 on the second backing film, film waste 600 and the second group of products 500 are attached to the second backing film. By separating the second backing film from the film waste 600, the film waste 600 is separated from the individual products 400 in the second group of products 500 attached to the second backing film.

[0080] refer to Figure 2 , Figure 3 and Figure 4 In some embodiments of the present invention, the product 400 includes a first sheet 410 and a second sheet 420 attached to the first sheet 410, and the contour of the second sheet 420 projected on the first sheet 410 is located inside the contour range of the first sheet 410; the film 100 includes a first film layer and a second film layer, and the film 100 is composited on the first base film through the first film layer; step S200 includes but is not limited to the following steps:

[0081] Step S210, die-cutting the first film layer and the second film layer at the same time, so that the film material 100 is cut to form a plurality of composite sheets and an intermediate film material 300, the plurality of composite sheets are evenly spaced along the length direction of the film material 100, and the composite sheets each include a first sheet 410 formed by cutting the first film layer and a semi-finished sheet formed by the second film layer; wherein the contour of the orthographic projection of the semi-finished sheet on the first sheet 410 coincides with the contour of the first sheet 410; and the positions of the intermediate film material 300 corresponding to each composite sheet each form a cut-out area 310;

[0082] Step S220 , die-cutting the semi-finished sheet to form a second sheet 420 .

[0083] It can be understood that when the film material 100 is die-cut to form the first group of products 200 and the intermediate film material 300, the first film layer and the second film layer of the film material 100 are die-cut at the same time to form a plurality of composite sheets and the intermediate film material 300, wherein the plurality of composite sheets are evenly spaced along the length direction of the film material 100, and the composite sheets include a first sheet 410 formed by cutting the first film layer and a semi-finished sheet formed by cutting the second film layer, and the semi-finished sheet is die-cut to form a second sheet 420, so that each of the composite sheets corresponds to each product 400 in the first group of products 200.

[0084] It can be understood that step S210 and step S220 can also be performed simultaneously, and the first film layer and the second film layer are die-cut at the same time, so that the first film layer of the film material 100 is cut to form a plurality of first sheets 410 evenly spaced along the length direction of the film material 100, and the second film layer of the film material 100 is cut to form a plurality of second sheets 420 evenly spaced along the length direction of the film material 100, and the first sheets 410 and the second sheets 420 are arranged one by one, so that each first sheet 410 and the second sheet 420 attached to the corresponding first sheet 410 together form each product 400 in the first group of products 200.

[0085] refer to Figure 3 , Figure 7 , Figure 8 and Fig. 9 In some embodiments, step S400 includes but is not limited to the following steps:

[0086] Step S440, die-cutting the portion of the second film layer in the intermediate film 300 between two adjacent cut-away areas 310 to form a second sheet 420;

[0087] Step S450 , die-cutting the portion of the first film layer in the intermediate film 300 between two adjacent cut-out areas 310 to form a first sheet 410 .

[0088] It can be understood that when die-cutting the portion of the intermediate film material 300 located between two adjacent cut-out areas 310, the portion between every two adjacent cut-out areas 310 on the second film layer of the intermediate film material 300 is first die-cut to form a second sheet 420, and then the portion between every two adjacent cut-out areas 310 on the first film layer of the intermediate film material 300 is die-cut to form a first sheet 410. After the intermediate film material 300 completes the above two die-cuttings, the remaining portions of the first film layer and the second film layer together constitute the film material waste 600, and after the die-cutting is completed, the two originally adjacent cut-out areas 310 will be connected to each other.

[0089] refer to Figures 2 to 4 In some embodiments of the present invention, each product 400 is provided with a process hole group 430, and the following steps are included before step S100:

[0090] Die-cutting the film material 100 to form a plurality of positioning holes 110;

[0091] The film material 100 is die-cut to form a plurality of process hole groups 430 .

[0092] It can be understood that the positioning holes 110 are formed by die-cutting on the film material 100 to facilitate the positioning of the film material 100 in subsequent processes.

[0093] Specifically, the portions of the membrane 100 close to the two edges of the membrane 100 in the width direction are each provided with a plurality of positioning holes 110 arranged along the length direction of the membrane 100 , and the positioning holes 110 arranged close to the two edges of the membrane 100 are symmetrically distributed with respect to the length direction of the membrane 100 .

[0094] refer to Figure 4 In one embodiment of the present invention, “die-cutting the film material 100 to form a plurality of positioning holes 110” includes the following steps:

[0095] The film material 100 is positioned by the 2n+2m positioning holes 110 formed by the previous die-cutting, and 2n positioning holes 110 are formed by die-cutting on the film material 100 , wherein n≥1 and m≥1.

[0096] It can be understood that in the process of die-cutting the film material 100 to form multiple positioning holes 110, each time the die-cutting is performed, it is necessary to die-cut each edge in the width direction of the film material 100 to form n positioning holes 110, and each time the die-cutting is performed, the film material 100 is positioned by the 2n+2m positioning holes 110 formed by the previous die-cutting (for example, when m=n, that is, the positioning holes 110 formed by the first two die-cuttings), thereby improving the position accuracy of the positioning holes 110 die-cut on the film material 100.

[0097] Specifically, when the film material 100 is die-cut to form a plurality of positioning holes 110, each time the die-cutting is performed, two positioning holes 110 are formed by die-cutting at each edge in the width direction of the film material 100, and at the same time, the three positioning holes 110 formed by die-cutting at each edge in the width direction of the film material 100 are positioned.

[0098] refer to Figures 2 to 4 In one embodiment of the present invention, the process hole group 430 includes first process holes 431 and second process holes 432 that are alternately distributed, and “die-cutting the film material 100 to form a plurality of process hole groups 430” includes the following steps:

[0099] The die-cutting is performed twice to form the first process hole 431 and the second process hole 432 on the film material 100 respectively.

[0100] It can be understood that by dividing the process hole group 430 into a plurality of first process holes 431 and a plurality of second process holes 432 , and the first process holes 431 and the second process holes 432 are alternately distributed, the operational difficulty during die-cutting is reduced.

[0101] Specifically, the process hole group 430 includes three first process holes 431 and three second process holes 432 .

[0102] A die-cutting production line according to an embodiment of the second aspect of the present invention is described in detail below.

[0103] A die-cutting production line according to an embodiment of the second aspect of the present invention is used to implement the die-cutting process of the embodiment of the first aspect. The die-cutting production line includes a first compound machine, a first die-cutting machine, a second compound machine, a second die-cutting machine, a third compound machine, a third die-cutting machine and a fourth compound machine which are arranged in sequence along the production line; wherein the first compound machine is used to compound the first film layer and the second film layer to form a film material 100, the first die-cutting machine is used to die-cut a plurality of positioning holes 110 and a plurality of process hole groups 430 on the film material 100, the second compound machine is used to compound a first base film on the film material 100, and to discharge the hole waste formed when the first die-cutting machine die-cuts the positioning holes 110 and the process hole groups 430 on the film material 100, and the second die-cutting machine is used to die-cut the film material 100 attached to the first base film to form a first group of products 200 and the intermediate film material 300, the third compounding machine includes a first laminating mechanism, a peeling mechanism and a second laminating mechanism which are sequentially arranged along the production line, the first laminating mechanism being used for laminating the upper supporting film on the side of the intermediate film material 300 which is away from the first base film, the peeling mechanism being used for separating the first base film from the intermediate film material 300 so as to separate the first group of products 200 on the first base film from the intermediate film material 300, the second laminating mechanism being used for compounding the intermediate film material 300 separated from the first base film on the second base film, the third die-cutting machine being used for die-cutting on the film material 100 to form the second group of products 500 and the film material waste 600, and the fourth compounding machine being used for separating the second group of products 500 from the film material waste 600.

[0104] It can be understood that at least two groups of tools are arranged on the punch of the first die-cutting machine, and the two groups of tools are respectively used for die-cutting to form the first process hole 431 and the second process hole 432 of the process hole group 430, and the distance between the two groups of tools in the length direction of the film material 100 is equal to several times the size of the product 400 in the length direction of the film material 100, and the size of the product 400 in the length direction of the film material 100 is the moving step distance of the film material 100.

[0105] It is understandable that the die-cutting production line also includes a fifth compound machine. When the second die-cutting machine die-cuts the film material 100 to form the first group of products 200, sheet waste will be generated. The fifth compound machine is used to discharge the film waste 600 remaining on the first group of products 200.

[0106] Specifically, the die-cutting machines in the die-cutting production line all adopt flat die machines.

[0107] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A die cutting process, characterized in that: The following steps are included: Compounding the film material (100) on the first supporting film; The film material (100) is die-cut so that the film material (100) forms a first group of products (200) and an intermediate film material (300); wherein the first group of products (200) includes a plurality of products (400) evenly spaced along the length direction of the film material (100), and the intermediate film material (300) is formed with a cut-out area (310) at a position corresponding to each product (400) in the first group of products (200), and the distance between any two adjacent cut-out areas (310) in the length direction of the film material (100) is equal to the size of the product (400) in the length direction of the film material (100); Separating the intermediate film material (300) from the first supporting film, so that each product (400) in the first group of products (200) is separated from the intermediate film material (300) and falls onto the first supporting film; Die-cutting the portion of the intermediate film material (300) located between two adjacent cut-off areas (310) to form a second group of products (500) and film material waste (600), wherein the second group of products (500) includes a plurality of products (400) evenly spaced and distributed along the length direction of the film material (100); The second group of products (500) is separated from the membrane material waste (600).

2. A die-cutting process according to claim 1, characterized in that: The step of separating the intermediate film material (300) from the first supporting film comprises the following steps: Compounding a support film on a side of the intermediate film material (300) away from the first supporting film; The first base film to which the first group of products (200) are attached is separated from the intermediate film material (300).

3. A die-cutting process according to claim 2, characterized in that: The die-cutting of the portion of the intermediate film (300) located between two adjacent cut-off areas (310) to form a second group of products (500) and film waste (600) comprises the following steps: Laminating the side of the intermediate film material (300) away from the supporting film onto the second supporting film; Separating the support film and the intermediate film material (300); The intermediate film material (300) is die-cut so that the portion of the intermediate film material (300) located between two adjacent cut-off areas (310) is die-cut to form each product (400) in the second group of products (500), and the remaining portion of the intermediate film material (300) forms the film material waste (600).

4. A die-cutting process according to claim 3, characterized in that: The step of separating the second group of products (500) from the waste film material (600) comprises the following steps: The waste film material (600) is separated from the second supporting film, so that the second group of products (500) is separated from the waste film material (600) and falls on the second supporting film.

5. A die-cutting process according to claim 1, characterized in that: The product (400) comprises a first sheet material (410) and a second sheet material (420) attached to the first sheet material (410), wherein the contour of the second sheet material (420) projected on the first sheet material (410) is located inside the contour range of the first sheet material (410); the film material (100) comprises a first film layer and a second film layer, and the film material (100) is composited onto the first base film via the first film layer; The die-cutting of the film material (100) so as to form the film material (100) into a first group of products (200) and an intermediate film material (300) comprises the following steps: The first film layer and the second film layer are die-cut simultaneously, so that the film material (100) is cut to form a plurality of composite sheets and the intermediate film material (300), the plurality of composite sheets are evenly spaced along the length direction of the film material (100), and the composite sheets each include the first sheet (410) formed by cutting the first film layer and a semi-finished sheet formed by the second film layer; wherein the contour of the semi-finished sheet projected onto the first sheet (410) coincides with the contour of the first sheet (410); and the position of the intermediate film material (300) corresponding to each of the composite sheets forms the cut-out area (310); The semi-finished sheet is die-cut to form the second sheet (420).

6. A die-cutting process according to claim 5, characterized in that: The die-cutting of the portion of the intermediate film (300) located between two adjacent cut-off areas (310) to form a second group of products (500) and film waste (600) comprises the following steps: Die-cutting a portion of the second film layer in the intermediate film material (300) located between two adjacent cut-out areas (310) to form the second sheet material (420); The portion of the first film layer in the intermediate film material (300) located between two adjacent cut-out areas (310) is die-cut to form the first sheet material (410).

7. A die-cutting process according to claim 1, characterized in that: Each product (400) is provided with a process hole group (430), and the steps of compounding the film material (100) on the first supporting film include: Die-cutting the film material (100) to form a plurality of positioning holes (110); The film material (100) is die-cut to form a plurality of process hole groups (430).

8. A die-cutting process according to claim 7, characterized in that: The die-cutting of the film material (100) to form a plurality of positioning holes (110) comprises the following steps: The film material (100) is positioned by using the 2n+2m positioning holes (110) formed by the previous die cutting, and 2n positioning holes (110) are formed by die cutting on the film material (100), wherein n≥1 and m≥1.

9. A die-cutting process according to claim 7, characterized in that: The process hole group (430) includes first process holes (431) and second process holes (432) that are alternately distributed, and the die-cutting of the film material (100) to form a plurality of the process hole groups (430) includes the following steps: The die cutting is performed twice to form the first process hole (431) and the second process hole (432) on the film material (100) respectively.

10. A die-cutting production line, characterized in that: Used to implement the die-cutting process as described in any one of claims 1 to 9.

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