A production method of an ultra-narrow frame type double-sided adhesive assembly

Abstract

The present application relates to a kind of production methods of ultra-narrow frame type double-sided adhesive assembly, comprising the following steps: a, first double-sided adhesive tape is asynchronous slitting to the release surface of first release film tape along the direction of tape travel;B, respectively compound a second double-sided adhesive tape along the direction of tape travel at the two sides edge area of the first release film tape at the two ends of first double-sided adhesive strip;C, the compound tape formed in step b is die-cut, and the first double-sided adhesive block, second double-sided adhesive block of required shape are formed;D, compound second release film, and then slitting to form finished product.The present application first uses asynchronous slitting, saves raw material, then a set of knife mould with different height inside and outside knife edge is used to complete product forming, reduces waste disposal difficulty, controls product tolerance size precision, in addition, by coating silicone in the knife cavity outside knife edge and carrying out baking drying setting, the probability of glue layer and knife mould back sticking is reduced, product appearance and size are ensured while improving waste disposal efficiency.

Description

Technical Field

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[0001] The present invention belongs to the technical field of composite die-cutting production, and specifically relates to a production method for a super-narrow frame-shaped double-sided adhesive component. Background Art

[0002] For some narrow-frame adhesive products, due to the high viscosity of the adhesive layer and high requirements for dimensional tolerances, problems such as poor product dimensions, displacement, and glue dropping are likely to occur during the production process. The conventional solution is to increase the peeling force between the protective release film and the double-sided adhesive to reduce the probability of the adhesive layer shifting and glue dropping. However, this will simultaneously increase the difficulty of peeling the protective release film and reduce the convenience of product use. Another solution is to separately design the cutting die, and perform nested die-cutting through two sets of dies with different cutting edges. Although this solution reduces the difficulty of waste discharge and improves the condition of adhesive layer displacement, the dimensional defect rate increases due to tolerance accumulation. Summary of the Invention

[0003] The purpose of the present invention is to provide a production method for a super-narrow frame-shaped double-sided adhesive component in view of the above problems of the prior art.

[0004] The present invention is realized through the following technical solutions: A production method for a super-narrow frame-shaped double-sided adhesive component, the production method comprising the following steps:

[0005] Step a: Composite a first release film tape on a first bottom film tape, and asynchronously slit a first double-sided adhesive tape along the tape traveling direction onto the release surface of the first release film tape to form first double-sided adhesive strips arranged at equal intervals along the tape traveling direction on the first release film tape;

[0006] Step b: Composite a second double-sided adhesive tape along the tape traveling direction on both side edge regions of the first release film tape at both ends of the first double-sided adhesive strip, that is, the first double-sided adhesive strip and the second double-sided adhesive tape are arranged perpendicularly; the two second double-sided adhesive tapes and the first double-sided adhesive strip are distributed in a continuous "eye" shape along the tape traveling direction;

[0007] Step c: Perform die-cutting on the composite tape formed in step b to respectively form first double-sided adhesive blocks and second double-sided adhesive blocks with the required shapes from the first double-sided adhesive strip and the second double-sided adhesive tape, and discharge the waste on the first double-sided adhesive blocks and the second double-sided adhesive blocks;

[0008] Step d: Composite a second release film, and then slit to form the finished product.

[0009] Furthermore, the production method is carried out using a high-speed rotary die-cutting machine;

[0010] Step a: The first base film strip and the first release film strip are laminated by the first composite roller group. Then, the first double-sided adhesive strip, after its own film has been peeled off, is asynchronously cut onto the release surface of the first release film strip by the asynchronous die-cutting roller group above the first release film strip, forming the first double-sided adhesive strips arranged at equal intervals along the direction of the strip's travel on the first release film strip; and the first positioning mark line is formed on the first release film strip.

[0011] Step b: Then, the second composite roller group applies a second double-sided adhesive strip along the direction of the strip's travel to the edge areas of the first release film strip at both ends of the first double-sided adhesive strip, and peels off the film from the second double-sided adhesive strip.

[0012] Step c: First transition film strip and second transition film strip are sequentially laminated above the first double-sided adhesive strip and the second double-sided adhesive strip, while second support film strip is laminated below the first support film strip. The mixture is then die-cut using a first circular die-cutting roller group. After die-cutting, the outline of the first double-sided adhesive block is formed on the first double-sided adhesive strip, the outline of the second double-sided adhesive block is formed on the second double-sided adhesive strip, and the outline of the outer frame of the first release film is formed on the first release film strip. The outer edge outlines of the first and second double-sided adhesive blocks coincide with the outline of the outer frame of the first release film. A through inner frame outline is also formed on the first release film strip, and a second positioning mark line is formed. After die-cutting by the first circular die, the inner frame outline... The waste material is directly discharged from below through the second bottom film strip; above the composite strip, the waste material outside the frame of the second double-sided adhesive strip and the waste material of the second transition film on the second double-sided adhesive block are discharged through two first row waste film strips at both sides. Then, the waste material outside the frame of the first double-sided adhesive block, the waste material outside the frame of the first release film strip, the waste material inside the frame of the first release film, and the waste material of the second transition film on the first double-sided adhesive block are discharged through the second row waste film strip. Then, the waste material of the first transition film inside the frames of the first double-sided adhesive block and the second double-sided adhesive block are discharged through the third row waste film strip. Thus, a sheet-like first release film, a first double-sided adhesive block, and a second double-sided adhesive block are formed on the first bottom film strip, and a through inner frame is formed inside the frame of the first release film.

[0013] Step d: Above the main material belt traveling direction in step c, in the opposite direction to the main material belt traveling direction, the third composite roller group first composites the third support film belt, the reverse adhesive film belt, and the second release film belt from bottom to top. Then, the second circular die-cutting roller group performs die-cutting, forming the outer contour line of the second release film and the third positioning mark line on the second release film belt. After being flipped by the flipping roller, the second release film belt is positioned and composited onto the main material belt in step c, so that the second release film belt covers the first double-sided adhesive block, the second double-sided adhesive block, and the first release film. Then... The third support film strip is peeled off from the top, and the first support film strip is peeled off from the bottom. Then, the release paper strip and the fourth support film strip are laminated under the first release film by the fourth composite roller group. Then, the reverse film strip and the waste material outside the second release film frame are peeled off from the top. Finally, the third circular die-cutting roller group is used for slitting. The slitting blade cuts the release paper strip, and then the fourth support film strip is peeled off to obtain the finished product. The finished product consists of release paper, first release film, first double-sided adhesive block and second double-sided adhesive block distributed in a frame shape on the edge of the first release film, and second release film from bottom to top.

[0014] In the above production method, in step c, silicone is coated on the die of the circular die-cutting roller group that performs die cutting on the composite strip formed in step b, both in the blade area other than the blade edge and inside the die cavity.

[0015] In the above production method, the coated silicone is a neutral silicone sealant.

[0016] In the above production method, the height of the silicone does not exceed the height of the nearest blade edge, and the blade edge remains exposed.

[0017] In the above production method, after the silicone coating roller is coated with silicone, the silicone-coated die is baked to dry and set the silicone.

[0018] In the above production method, the baking temperature of the die is 100℃ and the baking time is 2 hours.

[0019] In the above production method, the die-cutting mold is provided with a first cutting edge, a second cutting edge, and a third cutting edge. The first cutting edge forms the inner contour lines of the first and second double-sided adhesive blocks, the second cutting edge forms the outer contour lines of the first and second double-sided adhesive blocks and the outer contour line of the first release film, and the third cutting edge forms the inner frame contour line of the inner region of the first release film. The cutting edge height of the first cutting edge is less than that of the second cutting edge, that is, the die-cutting depth of the first cutting edge is less than that of the second cutting edge. The first cutting edge does not cut through the first release film material strip, while the second cutting edge cuts through the first release film material strip.

[0020] In the above production method, the cutting edges of the first and second cutting edges of the die are right-angled triangles or approximately right-angled triangles, and the direction of the hypotenuse of the cutting edge is towards the waste material.

[0021] In the above production method, the angle of the cutting edge of the die towards the waste material is 30-35°, and the angle of the other side is 0-5°.

[0022] This invention employs the above-mentioned technical solution, first using asynchronous slitting to save raw materials, and then completing product molding through a set of die-cutting molds with blades of different inner and outer heights, reducing waste removal difficulty and controlling product dimensional tolerance accuracy. In addition, by coating silicone on the blade cavity outside the blades and baking and drying it for shaping, the probability of the adhesive layer sticking back to the die-cutting mold is reduced, improving waste removal efficiency while ensuring product appearance and size. Thus, it can meet the high-efficiency production of double-sided adhesive strip assemblies with a width of 0.5mm-1mm and ensure product qualification rate. Attached Figure Description

[0023] Figure 1 This is an exploded perspective view of an embodiment of an ultra-narrow frame double-sided adhesive assembly produced by the present invention;

[0024] Figure 2 This is the book Figure 1 Schematic diagram of the planar structure of the embodiment;

[0025] Figure 3-1 This is the present invention. Figure 1 A schematic diagram of the production process flow of the embodiment;

[0026] Figure 3-2 This is a schematic diagram of the production process of another embodiment of the present invention;

[0027] Figures 4-1 to 4-4 This is a schematic diagram showing the blade unfolding and die-cutting effect of each die-cutting roller group in the production process of this invention;

[0028] Figure 4-5 This is a schematic diagram showing the superimposed die-cutting effects of four sets of die-cutting modules;

[0029] Figure 5-1 , Figure 5-2 , Figure 5-3 This is a schematic diagram of the cutting edge of the die in this invention; Detailed Implementation

[0030] The invention will be further illustrated below with reference to specific examples and accompanying drawings.

[0031] like Figure 1 , Figure 2As shown, the present invention is used to produce an ultra-narrow frame type double-sided adhesive component, which sequentially includes a first release film 1, an ultra-narrow double-sided adhesive layer 2 distributed in a frame shape at the edge of the first release film 1, and a second release film 3 covering the ultra-narrow double-sided adhesive layer 2 and the first release film 1. Among them, the ultra-narrow double-sided adhesive layer 2 is divided into a group of opposite first double-sided adhesive blocks S101 and another group of opposite second double-sided adhesive blocks S201, and there is a break between the first double-sided adhesive blocks S101 and the second double-sided adhesive blocks S201; the first release film 1 has several hollow inner frames 101 with the same or different shapes inside.

[0032] Combined with Figure 3-1 As shown, for the production method of the above ultra-narrow frame type double-sided adhesive component, the production method includes the following basic steps:

[0033] Step a: Compound the first release film tape L1 on the first bottom film tape T1, and asynchronously slit the first double-sided adhesive tape S1 along the tape running direction onto the release surface of the first release film tape L1 to form first double-sided adhesive strips S11 arranged at equal intervals along the tape running direction on the first release film tape L1;

[0034] Step b: Compound a second double-sided adhesive tape S2 along the tape running direction on both side edge areas of the first release film tape L1 at both ends of the first double-sided adhesive strip S11. That is, the first double-sided adhesive strip S11 and the second double-sided adhesive tape S2 are perpendicularly arranged and do not contact; the two second double-sided adhesive tapes S2 and the first double-sided adhesive strip S11 are distributed in a continuous "eye" shape along the tape running direction;

[0035] Step c: Die-cut the composite tape formed in step b so that the first double-sided adhesive strip S11 and the second double-sided adhesive tape S2 are respectively formed into first double-sided adhesive blocks S101 and second double-sided adhesive blocks S201 with the required shapes, and remove the waste on the first double-sided adhesive blocks S101 and the second double-sided adhesive blocks S201;

[0036] Step d: Compound the second release film and then slit it to form the finished product.

[0037] Combined with Figure 3-2 And Figures 4-1 to 4-5 As shown, further, the production method is carried out by a high-speed rotary die-cutting machine;

[0038] Step a: Compound the first bottom film tape T1 and the first release film tape L1 through the first compounding roller group F1, and then asynchronously slit the first double-sided adhesive tape S1 from which the self-carrying film S12 has been peeled onto the release surface of the first release film tape L1 above the first release film tape L1 through the asynchronous die-cutting roller group Y1 to form first double-sided adhesive strips S11 arranged at equal intervals along the tape running direction on the first release film tape L1; and form a first positioning mark line Y101 on the first release film tape L1;

[0039] Step b: Then, the second composite roller group F2 applies a second double-sided adhesive strip S2 along the direction of the strip travel to the edge areas of the first release film strip L1 at both ends of the first double-sided adhesive strip S11, and peels off the film S21 that comes with the second double-sided adhesive strip S2.

[0040] Step c: First transition film strip G1 and second transition film strip G2 are sequentially laminated above the first double-sided adhesive strip S11 and the second double-sided adhesive tape S2, respectively. Simultaneously, second support film strip T2 is laminated below the first support film strip T1. The mixture is then die-cut using the first circular die-cutting roller group M1. After die-cutting, a first double-sided adhesive block outline M101 is formed on the first double-sided adhesive strip S11, and a second double-sided adhesive block outline M102 is formed on the second double-sided adhesive tape S2. The first release film... A first release film outer frame outline M103 is formed on the first release film strip L1, and the outer edge outlines of the first double-sided adhesive block S101 and the second double-sided adhesive block S201 coincide with the first release film outer frame outline M103; a through inner frame outline M104 is also formed on the first release film strip L1, and a second positioning mark line M105 is formed thereon. In this embodiment, there are 3 second positioning mark lines, of which the first positioning mark line coincides with the first positioning mark line on the first release film strip L1. The marking lines correspond; after the first circular die-cutting, the waste inside the inner frame outline M104 is directly discharged from below through the second bottom film strip T2; above the composite strip, the waste outside the frame of the second double-sided adhesive strip S2 and the waste of the second transition film on the second double-sided adhesive block S201 are discharged through two first row waste film strips P1 at both sides, and then the waste outside the frame of the first double-sided adhesive block S101 and the waste outside the frame of the first release film strip L1 are discharged through the second row waste film strip P2. The waste material, waste material in the first release film frame, and waste material of the second transition film on the first double-sided adhesive block S101 are discharged through the third row of waste film material belt P3. The first transition film waste material in the frames of the first double-sided adhesive block S101 and the second double-sided adhesive block S201 is discharged. Thus, a sheet-like first release film 1, the first double-sided adhesive block S101 and the second double-sided adhesive block S201 distributed at the edge of the first release film 1 are formed on the first bottom film material belt T1, and a through hollow inner frame 101 is formed in the frame of the first release film 1.

[0041] Step d: Above the main material belt traveling direction in step c, the third composite roller group F3 first composites the third support film material belt T3, the reverse adhesive film material belt B1, and the second release film material belt L2 from bottom to top in the opposite direction to the main material belt traveling direction. Then, the second circular die-cutting roller group M2 performs die-cutting, forming the outer contour line M201 of the second release film and the third positioning mark line M202 (which corresponds to the second positioning mark line No. 2 in the second positioning mark line) on the second release film material belt L2. After being flipped by the flipping roller Z, the second release film material belt L2 is positioned and composited onto the main material belt in step c, so that the second release film material belt L2 covers the first double-sided adhesive block S101 and the second double-sided adhesive block S2. 01 and the first release film 1; then peel off the third bottom film strip T3 from the top and peel off the first bottom film strip T1 from the bottom, then composite the release paper strip L3 and the fourth bottom film strip T4 under the first release film 1 through the fourth composite roller group F4, then peel off the reverse film strip B1 and the waste material outside the second release film frame from the top, and finally cut it through the third circular knife die-cutting roller group M3. The cutting blade cuts the release paper strip L3, and then peels off the fourth bottom film strip T4 to obtain the finished product. The finished product consists of release paper 4, first release film 1, first double-sided adhesive block S101 and second double-sided adhesive block S201 distributed in a frame shape on the edge of the first release film 1, and second release film 3 from bottom to top.

[0042] like Figure 5-1 As shown, in the above production method, in step c, silicone 5 is coated on the die of the first circular die-cutting roller group M1 that performs die cutting on the composite strip formed in step b, covering both the blade body area (excluding the blade edge) and the cavity. The coated silicone 5 is a neutral silicone sealant. The height of the silicone 5 does not exceed the height of the nearest blade edge, ensuring the blade edge is exposed. After the silicone coating is completed, the die with the silicone coating is baked to dry and set the silicone. The baking temperature is 100°C, and the baking time is 2 hours.

[0043] Combination Figure 5-2 As shown, in the above production method, the die of the first circular die-cutting roller group M1 is provided with a first blade R101, a second blade R102 and a third blade R103. The first blade R101 forms the inner contour lines of the first double-sided adhesive block S101 and the second double-sided adhesive block S201, and the second blade R102 forms the outer contour lines of the first double-sided adhesive block S101 and the second double-sided adhesive block S201 and the outer contour line of the first release film 1. The third blade R103 forms the inner frame contour line M104 of the inner region of the first release film 1. The blade height of the first blade R101 is less than the blade height of the second blade R102 (i.e., the die-cutting depth of the first blade R101 is less than the die-cutting depth of the second blade R102, the first blade R101 does not cut through the first release film strip L1, while the second blade R102 cuts through the first release film strip L2).

[0044] Combination Figure 5-3 As shown, in the above production method, the first blade R101 and the second blade R102 of the first circular die-cutting roller group M1 have a right-angled triangle or an approximately right-angled triangle cross section, and the direction of the hypotenuse of the blade is towards the waste material. The angle of the die blade towards the waste material is 30-35°, and the angle of the other side is 0-5°. That is, the angle between the two blade faces relative to the cutting direction, the angle between the blade face towards the main material and the cutting direction is 0°-5°, and the angle between the blade face towards the waste material and the cutting direction is 30°-35°. This blade setting can ensure accuracy and facilitate waste removal.

[0045] In summary, the present invention adopts the above-mentioned technical solution, firstly using asynchronous cutting to save raw materials, and then using a set of die-cutting molds with blades of different heights inside and outside to complete product molding, reducing the difficulty of waste removal and controlling the dimensional accuracy of product tolerances. In addition, by coating silicone on the blade cavity outside the blades and baking and drying it for shaping, the probability of the adhesive layer sticking back to the die-cutting mold is reduced, improving waste removal efficiency while ensuring product appearance and size. Thus, it can meet the high-efficiency production of double-sided adhesive strip assemblies with a width of 0.5mm-1mm and ensure product qualification rate.

[0046] The above embodiments are merely preferred embodiments of the present invention and are used only to explain the present invention, not to limit the present invention. Any changes, substitutions, combinations, simplifications, modifications, etc., made by those skilled in the art without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A method for producing an ultra-narrow frame double-sided adhesive assembly, wherein the method employs a high-speed rotary die-cutting machine; characterized in that: The production method comprises the following steps: Step a: The first base film tape and the first release film tape are compounded by the first composite roller group, and then the first double-sided adhesive tape without its own film is asynchronously slit onto the release surface of the first release film tape above the first release film tape by the asynchronous die-cutting roller group, forming first double-sided adhesive strips arranged at equal intervals along the tape running direction on the first release film tape; and a first positioning mark line is formed on the first release film tape; Step b: Then, a second double-sided adhesive tape along the tape running direction is compounded on each of the two side edge regions of the first release film tape at both ends of the first double-sided adhesive strip by the second composite roller group, and the self-adhesive film of the second double-sided adhesive tape is peeled off; the two second double-sided adhesive tapes and the first double-sided adhesive strip are distributed in a continuous "mesh" shape along the tape running direction; Step c: The first transition film tape and the second transition film tape are successively compounded above the first double-sided adhesive strip and the second double-sided adhesive tape, and at the same time, the second base film tape is compounded below the first base film tape, and die-cutting is performed by the first round knife die-cutting roller group. After this die-cutting, a first double-sided adhesive block contour line is formed on the first double-sided adhesive strip, a second double-sided adhesive block contour line is formed on the second double-sided adhesive tape, a first release film outer frame contour line is formed on the first release film tape, and the outer edge contour lines of the first double-sided adhesive block and the second double-sided adhesive block coincide with the first release film outer frame contour line; a penetrating inner frame contour line is also formed on the first release film tape, and a second positioning mark line is formed; after the first round knife die-cutting, the waste material inside the inner frame contour line is directly discharged from below through the second base film tape; above the composite tape, the waste material outside the frame of the second double-sided adhesive tape and the waste material of the second transition film on the second double-sided adhesive block are discharged through two first waste discharge film tapes at both side edges first, then the waste material outside the frame of the first double-sided adhesive block, the waste material outside the frame of the first release film tape, the waste material inside the frame of the first release film, and the waste material of the second transition film on the first double-sided adhesive block are discharged through the second waste discharge film tape, and then the waste material of the first transition film inside the frames of the first double-sided adhesive block and the second double-sided adhesive block is discharged through the third waste discharge film tape; thereby forming a sheet-shaped first release film, first double-sided adhesive blocks and second double-sided adhesive blocks distributed at the edges of the first release film on the first base film tape, and a penetrating inner frame is formed inside the first release film frame; Step d: Above the main material belt traveling direction in step c, in the opposite direction to the main material belt traveling direction, the third composite roller group first composites the third support film belt, the reverse adhesive film belt, and the second release film belt from bottom to top. Then, the second circular die-cutting roller group performs die-cutting, forming the outer contour line of the second release film and the third positioning mark line on the second release film belt. After being flipped by the flipping roller, the second release film belt is positioned and composited onto the main material belt in step c, so that the second release film belt covers the first double-sided adhesive block, the second double-sided adhesive block, and the first release film. Then... The third support film strip is peeled off from the top, the first support film strip is peeled off from the bottom, and then the release paper strip and the fourth support film strip are laminated under the first release film by the fourth composite roller group. Then the reverse film strip and the waste material outside the second release film frame are peeled off from the top. Finally, the third circular die-cutting roller group is used for slitting. The slitting blade cuts the release paper strip, and then the fourth support film strip is peeled off to obtain the finished product. The finished product consists of release paper, first release film, first double-sided adhesive block and second double-sided adhesive block distributed in a frame shape on the edge of the first release film, and second release film from bottom to top. In step c, silicone is applied to the die of the circular die-cutting roller group that performs die cutting on the composite strip formed in step b, covering the area of ​​the blade body other than the blade edge and the inside of the die cavity; the height of the silicone does not exceed the height of the nearest blade edge, and the blade edge is kept exposed. The die on the first circular die-cutting roller assembly is provided with a first blade, a second blade, and a third blade. The first blade forms the inner contour lines of the first and second double-sided adhesive blocks, the second blade forms the outer contour lines of the first and second double-sided adhesive blocks and the outer contour line of the first release film, and the third blade forms the inner frame contour line of the inner region of the first release film. The blade height of the first blade is less than that of the second blade, that is, the die-cutting depth of the first blade is less than that of the second blade. The first blade does not cut through the first release film material strip, while the second blade cuts through the first release film material strip. The first and second cutting edges of the first circular die-cutting roller group have a cross-section of a right-angled triangle or an approximately right-angled triangle, and the direction of the hypotenuse of the cutting edge is towards the waste material.

2. The method for producing the ultra-narrow frame double-sided adhesive assembly according to claim 1, characterized in that: The coated silicone is a neutral silicone sealant.

3. The method for producing the ultra-narrow frame double-sided adhesive assembly according to claim 1, characterized in that: After the silicone coating roller is coated with silicone, the silicone-coated die is baked to dry and set the silicone.

4. The method for producing the ultra-narrow frame double-sided adhesive assembly according to claim 1, characterized in that: The die-cutting mold is baked at a temperature of 100°C for 2 hours.

5. The method for producing the ultra-narrow frame double-sided adhesive assembly according to claim 1, characterized in that: The blade of the first circular die-cutting roller group faces the waste material at an angle of 30~35° on the other side and at an angle of 0~5° on the other side.

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