A method of making a multi-layer die cut product

Abstract

The present application relates to a kind of preparation methods of multilayer die-cutting product, comprising: first, the die-cutting area to be die-cutting material band and mirror image die-cutting area are divided into parallel arrangement, and the die-cutting processing of two areas is carried out respectively, and the preliminary product material band is obtained;The die-cutting area and mirror image die-cutting area share the same material band bottom layer;After that, along the boundary between die-cutting area and mirror image die-cutting area, preliminary product material band is folded to make the die-cutting product on two areas be assembled, that is, multilayer die-cutting product is obtained.Compared with prior art, the present application divides the die-cutting material band into parallel arrangement of die-cutting area and mirror image die-cutting area, and simultaneously carries out die-cutting processing, and finally, the die-cutting product of two parts is assembled by folding, that is, multilayer die-cutting product is obtained, with the advantages of simple operation, easy to realize, and avoid the problem that double-sided adhesive is easily damaged due to manual operation in die-cutting / assembly process, thereby affecting the yield.

Description

Technical Field

[0001] This invention belongs to the field of die-cutting technology and relates to a method for preparing multi-layer die-cut products. Background Technology

[0002] In the die-cutting industry, with technological advancements, the materials and shapes of die-cut products used in the electronics industry are becoming increasingly diverse, and products composed of multiple materials are becoming more numerous and complex. For example... Figures 1 to 3 The multi-layer die-cut product shown includes, from bottom to top, an L-shaped handle film layer 5, a convex single-sided adhesive layer 4, a strip-shaped double-sided adhesive layer 2, and a strip-shaped Mylar layer 1. The long sides of the L-shaped handle film layer 5 and the convex single-sided adhesive layer 4 overlap with the other two strip-shaped layers. The L-shaped handle film layer 5 and the convex single-sided adhesive layer 4 extend in opposite directions along the overlapping portion, respectively. The other two strip-shaped layers extend to one side along their length. A release film 3 with no adhesive area is also attached to the bottom surface of the extended end of the strip-shaped double-sided adhesive layer 2. The non-release surface of the release film faces downward and there is a gap between its edge and the edge of the convex single-sided adhesive layer 4.

[0003] For the aforementioned die-cut products, the manufacturing methods typically include two types: unidirectional die-cutting and die-cutting / assembly. Unidirectional die-cutting includes: ① Forward die-cutting: The corresponding material layers are laid sequentially from bottom to top, and then die-cut layer by layer. However, due to the gap between the release liner and the single-sided adhesive in the adhesive-free area, the material thickness at the bottom is uneven, making it easy to cut through the product and resulting in a low yield. ② Reverse die-cutting: Using the Mylar layer as the bottom layer, the corresponding material layers are laid sequentially from top to bottom according to the product structure, and then die-cut layer by layer. When the product is horizontal, after the Mylar and double-sided adhesive are bonded, the release liner 3 for the adhesive-free area needs to be bonded. At this time, the non-release side needs to be bonded to the adhesive surface. If a whole sheet is bonded, it will cover the double-sided adhesive area, and the bonding of the non-release side makes it difficult to remove the release liner waste, rendering the double-sided adhesive area unusable. When the product is vertical, the release liner 3 for the adhesive-free area can only be bonded manually, but the bonding accuracy is difficult to guarantee. The die-cutting / assembly method includes: grouping the strip-shaped double-sided adhesive layer 2, the strip-shaped Mylar layer 1, and the adhesive-free release film 3 into one group, and the L-shaped handle film layer 5 and the convex-shaped single-sided adhesive layer 4 into another group, and then die-cutting them in groups (the die-cutting tools correspond to...). Figure 4-5 ,and Figure 6-7 The protective film 6 also has a release liner 15 attached to it. Then, the strip-shaped product assembly is embedded with the adhesive side facing up using double-sided adhesive. Figure 8 The product is then pressed into the jig slot 16 in the jig plate shown, and then onto another set of single-sided adhesive to obtain the die-cut product described above. However, in this method, the manual placement of the jig slot increases labor costs and results in lower positioning accuracy. At the same time, since the adhesive area of ​​the double-sided adhesive is exposed, operators are bound to accidentally touch it during assembly, which makes the double-sided adhesive prone to deformation, wrinkles, detachment, or damage, seriously affecting production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preparing multi-layer die-cut products, which solves the problem of difficulty in aligning two sets of products in the existing die-cutting / assembly process.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A method for preparing a multi-layer die-cut product includes the following steps:

[0007] 1) Divide the strip to be die-cut into a parallel die-cutting area and a mirror die-cutting area, and perform die-cutting on the two areas respectively to obtain the initial product strip; the die-cutting area and the mirror die-cutting area share the same bottom layer of the strip;

[0008] 2) Fold the initial product strip along the boundary line between the die-cut area and the mirror die-cut area to assemble the die-cut products in the two areas, thus obtaining a multi-layer die-cut product.

[0009] As a preferred technical solution, the bottom layer of the material strip can be provided with material strip layers of corresponding materials (including release film, Mylar, double-sided tape, single-sided tape and other commonly used materials for die-cutting) according to the actual die-cutting product structure requirements, and form the same or different multi-layer material structure.

[0010] In this invention, the die-cutting task performed by the "mirror die-cutting area" is as follows: assuming the die-cutting area is a conventional unidirectional die-cutting area, a portion of the upper-layer die-cutting task is inverted and symmetrically moved to the other side to form the die-cutting task.

[0011] As a preferred technical solution, in order to improve the stability of the overall structure of the strip during the die-cutting process, if both the die-cutting area and the mirror die-cutting area have the same multi-layer material structure, the corresponding strip layers can be shared.

[0012] Furthermore, in step 1), the initial product material strip has multiple die-cut products in the die-cutting area and the mirror die-cutting area respectively.

[0013] Furthermore, on the initial product material strip, the multiple die-cut products in the die-cutting area and the mirror die-cutting area are arranged in parallel, axially symmetrical, or centrally symmetrical arrangements, respectively.

[0014] Furthermore, in step 2), before folding, the initial product strip is punched to form a dividing line, and then folded along the dividing line.

[0015] Furthermore, in step 2), before folding, the initial product strip is punched with reference holes to form multiple reference holes symmetrically on both sides of the dividing line; during folding, the corresponding reference holes in the die-cut area and the mirror die-cut area pass through the same reference post, thereby assembling the die-cut products.

[0016] A method for preparing a multi-layer die-cut product includes the following steps:

[0017] 1) Divide the strip to be die-cut into a die-cutting area and a mirror die-cutting area arranged in parallel, wherein the die-cutting area and the mirror die-cutting area share the same protective film layer;

[0018] Within the die-cutting area, a handle release film layer is provided on the protective film layer; within the mirror die-cutting area, a Mylar material layer, a double-sided adhesive material layer, and a release cover film layer are sequentially provided on the protective film layer.

[0019] The first punching is performed to form the handle release film outline on the handle release film layer and the first adhesive-free release film outline on the release cover film layer. The waste material outside the handle release film outline and inside the first adhesive-free release film outline is discharged to obtain a punched product strip.

[0020] 2) In the mirror die-cutting area, the release film material layer of the adhesive-free area is attached to the first die-cut product strip and then punched a second time to form a second release film outline of the adhesive-free area that coincides with the outline of the first release film of the adhesive-free area. The waste material outside the outline is discharged to obtain the second die-cut product strip.

[0021] 3) Perform a third punching to form U-shaped scribe lines on the Mylar raw material layer and its upper layer. One side of the two opposite sides of the U-shaped scribe line is located within the outline of the release film of the second adhesive-free area, or coincides with one side of the outline of the release film of the second adhesive-free area. Discharge the waste material on the back side of the opening of the U-shaped scribe line to obtain the three-punch product strip.

[0022] 4) On the three-punch product strip, a single-sided adhesive material layer is bonded in the die-cutting area, and a cover film layer is bonded in the mirror die-cutting area. Then, a fourth punching is performed to form single-sided adhesive lines on the single-sided adhesive material layer. Straight lines that can be combined with U-shaped lines to form Mylar contour lines are formed on the Mylar material layer and its upper layer. Waste material outside the single-sided adhesive lines and Mylar contour lines is discharged to obtain the initial product strip.

[0023] 5) Fold the initial product strip along the dividing line between the die-cutting area and the mirror die-cutting area to assemble the die-cut products on both sides, thus obtaining the multi-layer die-cut product.

[0024] Further, in step 1), after the first punching, two sets of centrally symmetrical handle film outlines are formed on the handle release film layer, and correspondingly, two sets of centrally symmetrical first adhesive-free area release film outlines are formed on the release cover film layer.

[0025] Furthermore, along the conveying direction of the material belt, the outline of the handle film is a flat L-shape, and the front and rear ends of the L-shaped handle film outline are respectively provided with openings;

[0026] In step 4), after the fourth punching, a closed supplementary engraving line is provided on the handle release film layer to match the opening of the L-shaped handle film outline.

[0027] Furthermore, in step 5), before folding, the initial product strip is punched to form a dividing line, and then folded along the dividing line.

[0028] Furthermore, in step 5), before folding, the initial product strip is punched with reference holes to form multiple reference holes symmetrically on both sides of the dividing line; during folding, the corresponding reference holes in the die-cut area and the mirror die-cut area pass through the same reference post, thereby aligning and assembling the die-cut products.

[0029] Compared with the prior art, the present invention has the following characteristics:

[0030] 1) This invention divides the strip to be die-cut into a parallel die-cutting area and a mirror die-cutting area, and performs die-cutting on them simultaneously. Finally, the two die-cut products are assembled by folding to obtain a multi-layer die-cut product. It has the advantages of simple operation and easy implementation, and avoids the problem of double-sided tape being easily damaged due to manual operation in the die-cutting / assembly process, which affects the yield.

[0031] 2) Before folding, the present invention forms a dividing line and a reference hole by punching. The dividing line is used as the folding standard line and the reference hole is used as a reference. This effectively ensures the alignment accuracy of the die-cutting area and the mirror die-cutting area during the folding process, thus ensuring product quality.

[0032] 3) During the molding process of the release film in the adhesive-free area, a release cover layer with a hollow structure of the design shape of the release film in the adhesive-free area is formed by punching between the double-sided adhesive material layer and the release film material layer in the adhesive-free area. This ensures that after the release film material layer in the adhesive-free area is attached, only the designed area comes into contact with the double-sided adhesive. This effectively avoids the problem of double-sided adhesive failure caused by large-area adhesion of the non-release surface of the double-sided adhesive material layer and the release film material layer in the waste material.

[0033] 4) Multiple die-cutting product processing tasks are arranged in the die-cutting area and the mirror die-cutting area in the form of parallel arrangement, axial symmetry or central symmetry, which effectively improves the utilization rate of raw materials and production efficiency. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the main structure of a multi-layer die-cut product.

[0035] Figure 2 This is an exploded front view of a multi-layer die-cut product; the top and bottom positions in the diagram correspond to the top and bottom positions of the assembly.

[0036] Figure 3 A cross-sectional schematic diagram of a multi-layer die-cut product;

[0037] Figure 4 A schematic diagram of the handle die-cutting mold (left) and the punching structure (right) in the die-cutting / assembly method for multi-layer die-cut products;

[0038] Figure 5 A schematic diagram of a single-sided adhesive two-punch die (left) and punching structure (right) in the die-cutting / assembly method for multi-layer die-cut products;

[0039] Figure 6 A schematic diagram of the three-punch die (left) and punching structure (right) at the edge of the release film in the glue-free area of ​​a multi-layer die-cut product in the die-cutting / assembly method;

[0040] Figure 7 A schematic diagram of the Mylar and double-sided adhesive four-punch die (left) and punching structure (right) in the die-cutting / assembly method for multi-layer die-cut products;

[0041] Figure 8 A schematic diagram of the fixture plate structure in the die-cutting / assembly method for multi-layer die-cut products;

[0042] Figure 9 This is a schematic diagram of a punching die (left) and a punching structure (right) in the method for preparing multi-layer die-cut products in the embodiment;

[0043] Figure 10 This is a schematic diagram of the two-punch die (left) and punching structure (right) in the preparation method of multi-layer die-cut products in the embodiment;

[0044] Figure 11 This is a schematic diagram of the three-punch die (left) and punching structure (right) in the preparation method of multi-layer die-cut products in the embodiment;

[0045] Figure 12 This is a schematic diagram of the four-punch die (left) and punching structure (right) in the preparation method of multi-layer die-cut products in the embodiment;

[0046] Figure 13 This is a schematic diagram of the five-punch die (left) and punching structure (right) in the preparation method of multi-layer die-cut products in the embodiment.

[0047] Explanation of markings in the diagram:

[0048] 1-Strip Mylar layer, 2-Strip double-sided adhesive layer, 3-Release film for adhesive-free area, 4-T-shaped single-sided adhesive layer, 5-L-shaped handle film layer, 6-Protective film layer, 7-Handle release film layer, 8-Mylar raw material layer, 9-Double-sided adhesive raw material layer, 10-Release cover film layer, 11-Release film raw material layer for adhesive-free area, 12-Protective bottom film layer, 13-Single-sided adhesive raw material layer, 14-Cover film layer, 15-Release bottom film. Detailed Implementation

[0049] 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.

[0050] Example:

[0051] like Figures 1 to 3 The multi-layer die-cut product shown includes, from bottom to top, an L-shaped handle film layer 5, a convex single-sided adhesive layer 4, a strip-shaped double-sided adhesive layer 2, and a strip-shaped Mylar layer 1. The long sides of the L-shaped handle film layer 5 and the convex single-sided adhesive layer 4 overlap with the other two strip-shaped layers. The L-shaped handle film layer 5 and the convex single-sided adhesive layer 4 extend in opposite directions along the overlapping portion, while the other two strip-shaped layers extend to one side along their length. A release film 3 with no adhesive is also attached to the bottom surface of the extended end of the strip-shaped double-sided adhesive layer 2. This release film is separate from the convex single-sided adhesive layer 4.

[0052] The preparation method of this multi-layer die-cut product includes the following steps:

[0053] S1: Divide the strip to be die-cut into two parallel die-cutting areas, A and B. Die-cutting area A is used to make the L-shaped handle film layer 5 and the convex single-sided adhesive layer 4. Die-cutting area B is used to make the strip double-sided adhesive layer 2, the strip Mylar layer 1, and the release film 3 for the adhesive-free area. The two areas share the same protective film layer 6. The difference is that in die-cutting area A, the upper edge of the protective film layer 6 is flush with the handle release film layer 7. In mirror die-cutting area B, the protective film layer 6 is sequentially provided with a Mylar material layer 8, a double-sided adhesive material layer 9, and a release cover film layer 10. The Mylar material layer 8 is made of Mylar laminated 31mm from the edge.

[0054] Adopting such Figure 9 The die shown performs a first punching cut, forming two sets of centrally symmetrical flat L-shaped handle film outlines on the handle release film layer 7, and forming openings at both ends of each set of flat L-shaped handle film outlines; at the same time, two centrally symmetrical rectangular first adhesive-free area release film outlines are also formed on the release cover film layer 10; then the waste material outside the two handle film outlines and inside the first adhesive-free area release film outlines is discharged to obtain a punched product strip;

[0055] In this embodiment, the waste material outside the outline of the handle film on both sides is discharged by the waste removal single-sided adhesive. Specifically, during the first punching, a single-sided adhesive bonding mark line is formed outside the outline of the two handle films. Then, the waste removal single-sided adhesive is bonded with the mark line as a reference. Afterwards, the waste material on both sides can be removed by pulling up the waste removal single-sided adhesive.

[0056] S2: Within the mirror die-cutting area B, the release film material layer 11 of the adhesive-free area is bonded to the strip of the die-cut product, with the non-release side facing down, and using the following method... Figure 10 The two-stroke die shown performs a second punching, forming a second release film outline on the release film material layer 11 in the adhesive-free area that coincides with the outline of the first release film in the adhesive-free area. The waste material outside the outline is discharged to obtain the two-stroke product strip.

[0057] S3: Attach the protective bottom film layer 12 to the bottom of the protective film layer 6, using the following method... Figure 11 The three-punch die shown performs a third punching, forming two U-shaped etched lines on the Mylar raw material layer 8 and all its upper layers. One side of the two opposite sides of the U-shaped etched line coincides with one side of the outline of the second adhesive-free release film. Then the waste material between the U-shaped etched lines is discharged to obtain the three-punch product strip.

[0058] S4: On the three-punch product strip, a single-sided adhesive material layer 13 is bonded in the die-cutting area A, and a cover film layer 14 is bonded in the mirror die-cutting area B.

[0059] Then adopt such as Figure 12 The four-punch die shown performs the fourth punching cut, forming a convex single-sided adhesive outline on the single-sided adhesive material layer 13. The handle release film layer 7 and all its upper layers are also provided with closed supplementary engraving lines that surround the opening of the L-shaped handle film outline to form an L-shaped handle film outline. Straight engraving lines that can surround the U-shaped engraving lines to form strip-shaped Mylar outlines and strip-shaped double-sided adhesive outlines are formed on the Mylar material layer 8 and all its upper layers. A dividing engraving line is formed in the middle of the strip, and six reference holes are symmetrically formed on both sides of the dividing engraving line.

[0060] Waste material outside the reference hole, the convex single-sided adhesive outline, the L-shaped handle film outline, the strip Mylar outline, and the strip double-sided adhesive outline is discharged to obtain the initial product strip.

[0061] S5: Adopt as follows Figure 13 The five-punch die shown performs a fifth punching cut, forming an L-shaped folding etched line on the protective film layer 6 and all its upper layers. This etched line extends to the dividing etched line, and with two adjacent fifth punching cuts, the mirror die-cutting area B can be flipped.

[0062] S6: Pass the three reference holes in the die-cutting area A through the three fixed reference pillars respectively, then flip the mirror die-cutting area B along the dividing line and make the three reference pillars pass through the corresponding three reference holes. After pressing and bonding, the above-mentioned multi-layer die-cutting product is obtained.

[0063] 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 method for preparing a multi-layer die-cut product, characterized in that, The method includes the following steps: 1) Divide the strip to be die-cut into a die-cutting area and a mirror die-cutting area arranged in parallel, wherein the die-cutting area and the mirror die-cutting area share the same protective film layer (6). Within the die-cutting area, a handle release film layer (7) is provided on the protective film layer (6); within the mirror die-cutting area, a Mylar raw material layer (8), a double-sided adhesive raw material layer (9), and a release cover film layer (10) are sequentially provided on the protective film layer (6). The first punching is performed to form a handle release film outline on the handle release film layer (7) and a first adhesive-free release film outline on the release cover film layer (10). The waste material outside the handle release film outline and inside the first adhesive-free release film outline is discharged to obtain a punched product strip. 2) In the mirror die-cutting area, the release film material layer (11) of the glue-free area is attached to the first die-cut product strip and then punched a second time to form the second release film outline of the glue-free area that coincides with the outline of the first release film of the glue-free area. The waste material outside the outline is discharged to obtain the second die-cut product strip. 3) Perform a third punching to form U-shaped lines on the Mylar raw material layer (8) and its upper layer. One side of the two opposite sides of the U-shaped line is located within the outline of the release film of the second adhesive-free area, or coincides with one side of the outline of the release film of the second adhesive-free area. Discharge the waste material on the back side of the opening of the U-shaped line to obtain the three-punch product strip. 4) On the three-punch product strip, the single-sided adhesive material layer (13) is bonded in the die-cutting area, and the cover film layer (14) is bonded in the mirror die-cutting area. Then, the fourth punching is performed to form single-sided adhesive lines on the single-sided adhesive material layer (13). Straight lines that can be combined with U-shaped lines to form Mylar contour lines are formed on the Mylar material layer (8) and its upper layer. The waste material outside the single-sided adhesive lines and outside the Mylar contour lines is discharged to obtain the initial product strip. 5) Fold the initial product strip along the dividing line between the die-cutting area and the mirror die-cutting area to assemble the die-cut products on both sides, thus obtaining the multi-layer die-cut product.

2. The method for preparing a multi-layer die-cut product according to claim 1, characterized in that, In step 1), after the first punching, two sets of centrally symmetrical handle film outlines are formed on the handle release film layer (7), and correspondingly, two sets of centrally symmetrical first adhesive-free area release film outlines are formed on the release cover film layer (10).

3. The method for preparing a multi-layer die-cut product according to claim 2, characterized in that, Along the conveying direction of the material belt, the outline of the handle film is in the shape of a flat L, and the front and rear ends of the handle film outline are respectively provided with openings; In step 4), after the fourth punching, a closed supplementary engraving line that matches the opening of the handle film outline is also provided on the handle release film layer (7).

4. The method for preparing a multi-layer die-cut product according to claim 1, characterized in that, In step 5), before folding, the initial product strip is punched to form a dividing line, and then folded along the dividing line.

5. The method for preparing a multi-layer die-cut product according to claim 3, characterized in that, In step 5), before folding, the initial product strip is punched with reference holes to form multiple reference holes symmetrically on both sides of the dividing line; during folding, the corresponding reference holes in the die-cut area and the mirror die-cut area pass through the same reference post, so that the die-cut products are aligned and assembled.

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