Die cutting method for improving material utilization rate

Abstract

According to the die cutting method for improving the material utilization rate, through the continuous strip-shaped forming process, waste materials of auxiliary materials on the surface of a product can be automatically stripped through equipment. A step-by-step re-pasting technology is adopted, and the double-faced adhesive tape is exposed in two times, so that a waste material part in a traditional process is converted into an available product. According to the method, the material utilization rate is increased, the production cost is reduced while the product quality is guaranteed, and the method is suitable for double-sided tape products needing precision machining.

Description

Technical Field

[0001] The present invention relates to the field of die-cutting technology, in particular to a die-cutting method for improving material utilization. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and may not constitute prior art.

[0003] In the existing double-sided tape die-cutting process, after the tape is cut, the gaps between the tape sheets are discarded as waste. This conventional die-cutting solution in the industry also creates waste around the product during molding, wasting material. This is especially true for narrow products, such as those with a width of less than 3mm, where waste can occur around the 2mm gap, resulting in very low material utilization.

[0004] With the growing demand for double-sided tape in industries such as electronics and automobiles, the requirements for material utilization, production costs, and environmental performance are also becoming increasingly stringent. Therefore, it is urgent to develop a new die-cutting process that can significantly improve material utilization and reduce production costs.

[0005] It should be noted that the above technical background is merely provided to provide a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. Simply because these solutions are described in the technical background section of the present invention, it should not be assumed that the above technical solutions are well known to those skilled in the art. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a die-cutting method for improving material utilization.

[0007] In order to solve the above technical problems, the present invention provides a die-cutting method for improving material utilization. The raw materials used in the die-cutting method include, from top to bottom, ① a first release film, ② a double-sided tape, ③ a second release film and ④ a weak adhesive film.

[0008] The die-cutting method comprises the following steps:

[0009] Step 1: Cutting along the width direction from top to bottom, cutting the raw material into multiple sections along the length direction to form intermediate product 1;

[0010] Step 2: Peel off the first release film of layer ① of the intermediate product 1, and re-attach the third release film on the top layer to form the intermediate product 2;

[0011] Step 3: Cut the intermediate product 2 in the length direction, cutting the three layers ①②③ into strips to form the intermediate product 3;

[0012] Step 4: peel off the third release film of layer ① of the intermediate product 3 to expose the strip-shaped double-sided adhesive layer, and cover the top layer with the fourth release film to form the intermediate product 4;

[0013] Step 5. Peel off the fourth release film of layer ① of intermediate product 4. The fourth release film will take away the double-sided adhesive layer and the corresponding second release film layer that are not covered by the third release film to form finished product 1. The double-sided adhesive layer covered by the third release film and the corresponding second release film, as well as the weak adhesive film at the bottom, form intermediate product 5.

[0014] Step 6, intermediate product 5: After peeling off the third release film of layer ①, cover the top with the fifth release film. The fifth release film, double-sided tape, second release film and weak adhesive film form finished product 2.

[0015] Preferably, step 1 is specifically to use a cutter 1 to cut from top to bottom along the width direction, cutting the raw material into multiple sections in the length direction to form an intermediate product 1,

[0016] The tool comprises a blade 1 and a blade 2,

[0017] The blade 1 cuts the raw material into three layers ①②③.

[0018] The second blade cuts the raw material into two layers ① and ②.

[0019] Preferably, the third release film is a light peeling release film with a peeling force of 1-3 g / in.

[0020] Preferably, the fourth release film is a heavy-peel release film with a peeling force of 20-30 g / in.

[0021] The present application also provides an adhesive tape made using the die-cutting method, the adhesive tape comprising the finished product 1, the finished product 1 comprising ① a fourth release film, ② a double-sided tape, and ③ a second release film, the double-sided tape of the ② layer being arranged in strips at intervals, the double-sided tape of the ② layer being cut by a tool with a second incision and a third incision, the second release film of the ③ layer being the same shape as the double-sided tape of the ② layer, the second release film of the ③ layer being covered on the surface of the double-sided tape of the ② layer, the second release film of the ③ layer being cut by a tool with a first incision, the first incision dividing the second release film into a plurality of small segments, and the double-sided tape corresponding to each segment of the second release film being divided into an effective adhesive segment and a waste segment by the third incision.

[0022] The present application also provides a tape made using the die-cutting method, the tape including the finished product 2, the finished product 2 including ① a fifth release film, ② a double-sided tape, ③ a second release film and a bottom layer of weak adhesive film, the double-sided tape of the ② layer is arranged in strips at intervals, the double-sided tape of the ② layer is cut by a tool with a second incision and a third incision, the second release film of the ③ layer is the same shape as the double-sided tape of the ② layer, the second release film of the ③ layer is covered on the surface of the double-sided tape of the ② layer, the second release film of the ③ layer is cut by a tool with a first incision, the first incision divides the second release film into multiple small segments, and the double-sided tape corresponding to each segment of the second release film is divided into an effective glue segment and a waste segment by the third incision.

[0023] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0024] This invention provides a die-cutting method that improves material utilization. Through a continuous strip-forming process, the auxiliary material on the product surface can be automatically stripped away by the equipment to remove waste. Using a step-by-step transfer technique, the double-sided tape is exposed twice, thereby converting some of the waste in the traditional process into usable product. This method improves material utilization, reduces production costs while ensuring product quality, and is suitable for double-sided tape products requiring precision processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a strip of raw material being cut by a tool.

[0026] Figure 2 It is a top view of the intermediate product formed after the raw material is cut by the tool.

[0027] Figure 3 It is a longitudinal cross-sectional view of the intermediate product formed after the raw material is cut by the tool.

[0028] Figure 4 This is a top view of the intermediate product after the first release film of layer ① is peeled off.

[0029] Figure 5 This is the structural diagram of intermediate product 2.

[0030] Figure 6 This is the structural diagram of intermediate product three.

[0031] Figure 7 is a cross-sectional diagram of intermediate product three.

[0032] Figure 8 This is a schematic diagram of the structure after the third release film of the intermediate product ① layer is peeled off to expose the strip-shaped double-sided adhesive layer.

[0033] Figure 9 This is the structural diagram of intermediate product four.

[0034] Figure 10 This is a structural diagram of finished product one.

[0035] Figure 11 This is a structural diagram of finished product 2.

[0036] Figure 12 This is a structural diagram of finished product one.

[0037] Figure 13 It is a strip of adhesive with a release film that is peeled off from the finished product during use.

[0038] Figure 14 yes Figure 13 Schematic diagram of the transverse section.

[0039] Figure 15 It is a structural diagram of tool one.

[0040] Figure 16 It is a structural diagram of tool 2.

[0041] Among them: 1. Cutter 1; 11. Blade 1; 12. Blade 2; 2. Double-sided tape; 3. Second release film; 4. Third release film; 5. Fourth release film; 61. First incision; 62. Second incision; 63. Third incision; 21. Effective adhesive segment; 22. Waste segment. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] It should be noted that, in the description of the present invention, the terms "first," "second," etc., are used solely for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0044] This application provides a die-cutting method for improving material utilization.

[0045] like Figure 1 As shown, the strip-shaped raw material has four layers, from top to bottom, ① the first release film, ② double-sided tape, ③ the second release film and ④ weak adhesive film.

[0046] The die-cutting method comprises the following steps,

[0047] Step 1: Figure 1 As shown, a cutter 1 is used to cut from top to bottom along the width direction, and the raw material is cut into multiple sections in the length direction to form an intermediate product 1.

[0048] The tool comprises a blade 11 and a blade 2 12.

[0049] The blade 11 cuts the raw material into three layers ①②③.

[0050] The blade 2 12 cuts the raw material into two layers ① and ②.

[0051] like Figure 2 1 is a top view of an intermediate product 1 formed after the raw material is cut by a tool 1, which is divided into multiple segments in the length direction.

[0052] like Figure 3 As shown, this is a longitudinal cross-sectional view of an intermediate product 1 formed after the raw material is cut by a tool 1. The raw material is divided into multiple segments in the length direction. The three layers ①②③ are cut by blade 11, and the two layers ①② are cut by blade 2 12.

[0053] Step 2: Figure 4 As shown, the first release film of the intermediate product 1 layer ① is peeled off.

[0054] like Figure 5 As shown, a third release film is re-applied. The third release film is a light peeling release film with a peeling force of 1-3 g / in, forming an intermediate product 2.

[0055] Step 3: Figure 6 As shown, use cutter 2 to cut along the length direction of intermediate product 2, cutting the three layers ①②③ into strips to form intermediate product 3. Figure 7 The figure shows a cross-sectional view of intermediate product three.

[0056] Step 4: Peel off the third release film of the intermediate product 3 layer ① to reveal the double-sided adhesive layer ( Figure 8 As shown), the fourth release film (as shown) is covered on the double-sided adhesive layer. Figure 9 As shown), the fourth release film is a heavy peelable release film with a peel force of 20-30 g / in, forming an intermediate product four.

[0057] In this step, since the third release film of the peeled layer ① is in a continuous strip, the auxiliary material on the surface of the product can be automatically peeled off as waste by the equipment.

[0058] Step 5: peel off the fourth release film of the intermediate product 4. The fourth release film takes away the double-sided adhesive layer and the corresponding second release film layer that are not covered by the third release film, forming a finished product 1 (such as Figure 10As shown), the double-sided adhesive layer covered by the third release film and the corresponding second release film, as well as the weak adhesive film at the bottom form an intermediate product five.

[0059] Step 6: After peeling off the third release film of the intermediate product 5, the fifth release film is covered on the top. The fifth release film, double-sided tape, second release film and weak adhesive film form the finished product 2 (such as Figure 11 shown).

[0060] like Figure 10 He Ru Figure 12 As shown, the finished product 1 includes ① layer of the fourth release film, ② layer of double-sided adhesive tape 2, and ③ layer of the second release film 3. The double-sided adhesive tape 2 of the ② layer is arranged in strips at intervals. The double-sided adhesive tape 2 of the ② layer is cut by a tool 1 with a second incision 6262 and a third incision 63. The second release film 3 of the ③ layer is the same shape as the double-sided adhesive tape 2 of the ② layer. The second release film 3 of the ③ layer covers the surface of the double-sided adhesive tape 2 of the ② layer. The second release film 3 of the ③ layer is cut by a tool 1 with a first incision 61. The first incision 61 divides the second release film 3 into multiple small segments. The double-sided adhesive tape 2 corresponding to each segment of the second release film 3 is divided into an effective adhesive segment 21 and a waste segment 22 by the third incision 63. As shown Figure 13 and 14 As shown, when it is necessary to peel off a small section of the second release film 3, first peel off the second release film 3 and the waste section 22 of the double-sided adhesive tape 2 from the first incision 61 to form a pulling means. The peeled pulling means has no double-sided adhesive tape 2. The pulling means is pulled to peel off the effective adhesive of the double-sided adhesive tape 2 from the fourth release film.

[0061] The method of using the finished product 2 is the same as that of the finished product 1. After removing the weak adhesive film, the second release film and the waste section 22 of the double-sided tape are peeled off from the first incision 61 to form a pulling means. The peeled pulling means has no double-sided tape. Pull the pulling means to peel off the effective adhesive of the double-sided tape from the fifth release film.

[0062] The above embodiments are merely preferred embodiments for the purpose of fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

Claims

1. A die-cutting method for improving material utilization, characterized in that: The raw materials used in the die-cutting method include, from top to bottom, ① a first release film, ② a double-sided tape, ③ a second release film and ④ a weak adhesive film. The die-cutting method comprises the following steps: Step 1: Cutting along the width direction from top to bottom, cutting the raw material into multiple sections along the length direction to form intermediate product 1; Step 2: Peel off the first release film of layer ① of the intermediate product 1, and re-attach the third release film on the top layer to form the intermediate product 2; Step 3: Cut the intermediate product 2 in the length direction, cutting the three layers ①②③ into strips to form the intermediate product 3; Step 4: peel off the third release film of layer ① of the intermediate product 3 to expose the strip-shaped double-sided adhesive layer, and cover the top layer with the fourth release film to form the intermediate product 4; Step 5. Peel off the fourth release film of layer ① of intermediate product 4. The fourth release film will take away the double-sided adhesive layer and the corresponding second release film layer that are not covered by the third release film to form finished product 1. The double-sided adhesive layer covered by the third release film and the corresponding second release film, as well as the weak adhesive film at the bottom, form intermediate product 5. Step 6, intermediate product 5: After peeling off the third release film of layer ①, cover the top with the fifth release film. The fifth release film, double-sided tape, second release film and weak adhesive film form finished product 2.

2. The die-cutting method according to claim 1, characterized in that: Step 1 specifically includes using a cutter 1 to cut from top to bottom along the width direction, cutting the raw material into multiple sections along the length direction to form an intermediate product 1. The tool comprises a blade 1 and a blade 2, The blade 1 cuts the raw material into three layers ①②③. The second blade cuts the raw material into two layers ① and ②.

3. The die-cutting method according to claim 2, characterized in that: The third release film is a light peeling release film with a peeling force of 1-3 g / in.

4. The die-cutting method according to claim 2, characterized in that: The fourth release film is a heavy-peel release film with a peeling force of 20-30 g / in.

5. An adhesive tape made by the die-cutting method according to any one of claims 2 to 4, characterized in that: The adhesive tape includes the finished product 1, which includes ① a fourth release film, ② a double-sided tape, and ③ a second release film. The double-sided tape of the ② layer is arranged in strips at intervals. The double-sided tape of the ② layer is cut by a tool with a second incision and a third incision. The second release film of the ③ layer is the same shape as the double-sided tape of the ② layer. The second release film of the ③ layer is covered on the surface of the double-sided tape of the ② layer. The second release film of the ③ layer is cut by a tool with a first incision. The first incision divides the second release film into multiple small segments. The double-sided tape corresponding to each segment of the second release film is divided into an effective glue segment and a waste segment by the third incision.

6. An adhesive tape made by the die-cutting method according to any one of claims 2 to 4, characterized in that: The adhesive tape includes the finished product 2, which includes ① a fifth release film, ② a double-sided tape, ③ a second release film and a bottom layer of weak adhesive film. The double-sided tape of the ② layer is arranged in strips at intervals. The double-sided tape of the ② layer is cut by a tool with a second incision and a third incision. The second release film of the ③ layer is the same shape as the double-sided tape of the ② layer. The second release film of the ③ layer is covered on the surface of the double-sided tape of the ② layer. The second release film of the ③ layer is cut by a tool with a first incision. The first incision divides the second release film into multiple small segments. The double-sided tape corresponding to each segment of the second release film is divided into an effective glue segment and a waste segment by the third incision.

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