Production process suitable for 0.01 mm ultrathin single-sided adhesive tape

Abstract

The invention relates to a production process suitable for a 0.01 mm ultrathin single-sided adhesive tape, which adopts a high-speed rotary die-cutting machine for production, a one-time die-cutting process is divided into three die-cutting processes, and a transition release film is eliminated at intervals in two times, so that although the processes are more, higher overall production efficiency can still be maintained, and the production cost is reduced. Through a transition protective film broken line mode and a step-by-step waste discharge mode, on one hand, the ultrathin double-sided adhesive tape can be directly compounded with a product release film under the condition of not repasting, and on the other hand, a knife mark can be prevented from being formed on a finished product release film material belt, so that the condition that the adhesive is leaked into the knife mark during long-time storage is avoided, and the production efficiency is improved. The ultrathin single-sided adhesive tape can be stripped more conveniently in subsequent use, the yield of the product in normal use is finally increased to more than 96%, waste in use is greatly reduced, and the cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of precision die-cutting component production, in particular to a production process suitable for 0.01mm ultra-thin single-sided adhesive tape. Background Art

[0002] With the development of the electronic products industry, the precision requirements for spare parts are getting higher and higher. Some high-precision products need to use ultra-thin single-sided adhesive components with a thickness of 0.01mm. There are only single-sided adhesive layers and release film layers. They are small in thickness and small in specifications. In the existing production process, they are often rolled up with isolation paper after one-time die-cutting and waste discharge. Although the process is simple, it is not easy to transfer due to the small thickness of the product itself. After one-time die-cutting, the release film tape will inevitably have knife marks. After rolling up, as the storage time increases, the glue on the single-sided adhesive tape is easy to penetrate into the knife marks, making it difficult to peel off the single-sided adhesive block, which makes the defective rate of the product reach 60% in subsequent use, causing great waste of materials and costs. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a production process suitable for 0.01 mm ultra-thin single-sided adhesive tape.

[0004] The technical solution adopted by the present invention is: a production process suitable for 0.01mm ultra-thin single-sided adhesive tape, including a release film tape and ultra-thin single-sided adhesive blocks arranged on the release film tape, the production process adopts a high-speed rotary die-cutting machine, the running direction of the release film tape is the running direction of the main tape, and the release surface of the release film tape faces upward, and the production process includes the following steps: Step a, in front of the release film tape, in the direction opposite to the running direction of the main tape and from bottom to top, the first supporting film tape and the first protective film tape containing the self-contained film are compounded in sequence, and the first circular knife die-cutting roller group is used for the first die-cutting, and the first protective film tape is cut into a plurality of thin strips of the first protective film tape along the length direction of the tape by the first die-cutting; then, the self-contained film of the first protective film tape is removed, and then the ultra-thin single-sided adhesive tape and the first transition release film tape are compounded in sequence, with the adhesive surface of the ultra-thin single-sided adhesive tape facing upwards. At this time, the composite tape is, from bottom to top, the first supporting film tape, a plurality of thin strips of the first protective film tape arranged adjacent to each other along the length direction of the tape, the ultra-thin single-sided adhesive tape, the first transition release film tape film material strip; and then the composite material strip is die-cut for the second time by the second circular knife die-cutting roller group, and the first transition release film material strip and the ultra-thin single-sided adhesive material strip are cut out and formed into ultra-thin single-sided adhesive material blocks by the second die-cutting, and the ultra-thin single-sided adhesive material blocks are arranged in several rows along the length direction of the material strip, and it is ensured that there is a straight die-cutting line generated by the first die-cutting below each row of ultra-thin single-sided adhesive material blocks, that is, there are two thin strips of the first protective film material strip supporting each row of ultra-thin single-sided adhesive material blocks; then the first transition release film material strip waste, the ultra-thin single-sided adhesive material strip waste outside the ultra-thin single-sided adhesive material block, and the first transition release film waste in the ultra-thin single-sided adhesive material block area are excluded, and then the material strip is turned over by the turning roller to compound with the release film material strip below; At this time, the main material strips are, from bottom to top, a release film material strip with the release surface facing upward, an ultra-thin single-sided adhesive material block with the adhesive surface facing downward, a plurality of thin first protective film material strips completely covering the ultra-thin single-sided adhesive material block, and a first bottom film material strip; Step b, after the main material strip runs out of the front of the first circular knife die-cutting roller group, the waste is removed from the top in two steps. The first step is to remove the first bottom film strip and part of the thin first protective film strip, and ensure that there is still a thin first protective film strip compounded on each row of ultra-thin single-sided adhesive blocks; after a roller position is separated, the remaining thin first protective film strip is removed; at this time, the main material strip is from bottom to top: the release film strip with the release surface facing up, and the ultra-thin single-sided adhesive block with the adhesive surface facing down; Step c: Compound a second bottom film strip under the release film strip, and then perform a third die-cutting through a third circular knife die-cutting roller group, the third die-cutting forming the contour lines on both sides of the release film strip and a row of positioning holes; then remove the waste of the second bottom film strip and the inner holes of the positioning holes, and remove the waste on both sides of the release film strip; finally, compound a release paper strip under the release film strip and roll it up to obtain a finished product.

[0005] In step a, after the first die-cutting to remove the self-contained film of the first protective film tape and before laminating the ultra-thin single-sided adhesive tape, the first surface of the thin strip of the first protective film tape is subjected to a first surface anti-static treatment; In step b, after the third die-cutting to remove the upper and lower waste materials and before winding, the material strip is subjected to a second surface antistatic treatment.

[0006] In step a, the die of the first circular die-cutting roller group is provided with a plurality of first blades which can die-cut parallel straight die-cutting lines, and the blade depth of the first blade just cuts through the first protective film strip; the self-contained film of the first protective film strip is removed by the first row of waste rollers.

[0007] In step a, the knife die of the second circular knife die-cutting roller group is provided with several groups of second blades that can die-cut the closed contour line of the ultra-thin single-sided adhesive block, and the blade depth of the second blade just cuts through the ultra-thin single-sided adhesive tape; the first transition release film tape waste, the ultra-thin single-sided adhesive tape waste outside the ultra-thin single-sided adhesive block, and the first transition release film waste in the ultra-thin single-sided adhesive block area are removed by the first row of waste tapes and the third row of waste rollers; in step b, the first bottom film tape and part of the thin strips of the first protective film tape are removed by the fourth row of waste rollers, and it is ensured that there is still a thin strip of the first protective film tape compounded on each row of ultra-thin single-sided adhesive blocks; after another roller position is separated, the remaining thin strips of the first protective film tape are removed by the fifth row of waste rollers.

[0008] In step c, the cutting die of the third circular die-cutting roller group is provided with two third blades which can die-cut the contour lines on both sides of the release film material strip, and a positioning hole blade which can die-cut a row of closed positioning hole contour lines on one side edge of the release film material strip, and the blade depths of the third blade and the positioning hole blade just cut through the release film material strip; then the second bottom film material strip and the waste inside the positioning holes are removed through the sixth row of waste rollers below, and the waste on both sides of the release film material strip is removed through the seventh row of waste rollers above; a ejector is installed in the positioning hole blade to remove the waste inside the positioning hole together with the second bottom film material strip.

[0009] The process of the present invention splits a die-cutting process into three die-cutting processes and removes the transition release film at intervals twice. Although there are more processes, the high-speed rotary die-cutting process is adopted, but a relatively high overall production efficiency can still be maintained. Through the transition protective film breaking line method and the step-by-step waste discharge method, on the one hand, the ultra-thin double-sided adhesive can be directly compounded with the product release film without transfer, and on the other hand, it can avoid the formation of knife marks on the finished release film material strip, thereby avoiding the situation where glue leaks into the knife marks during long-term storage, so that the ultra-thin single-sided adhesive product can be more conveniently peeled off in subsequent use, and ultimately the yield rate of the product in normal use is increased to more than 96%, which greatly reduces waste during use and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of an ultra-thin single-sided adhesive assembly according to an embodiment of the present invention; Figure 2 It is a schematic diagram of the exploded structure of a single product of an embodiment of the present invention; Figure 3 It is a schematic flow diagram of the process of the present invention; Figure 4-1 , Figure 4-2 , Figure 4-3 They are schematic diagrams of the die-cutting effects of the first circular die-cutting roller group, the second circular die-cutting roller group, and the third circular die-cutting roller group in the present invention; Figure 4-4 yes Figure 4-1 , Figure 4-2 , Figure 4-3 Schematic diagram after superimposing the die-cutting effects. DETAILED DESCRIPTION

[0011] like Figure 1 , Figure 2 As shown, the present invention is a production process suitable for 0.01 mm ultra-thin single-sided adhesive tape, wherein the ultra-thin single-sided adhesive tape comprises a release film strip L1 and an ultra-thin single-sided adhesive material block 1 arranged on the release film strip L1; Combination Figure 3 , Figure 4-1 to Figure 4-4 As shown, the production process adopts a high-speed rotary die-cutting machine, with the running direction of the release film strip 1 as the running direction of the main strip, and the release surface of the release film strip L1 facing upward. The production process includes the following steps: Step a, in front of the release film strip L1, in the opposite direction to the running direction of the main strip and from bottom to top, the first base film strip T1 and the first protective film strip B1 containing the self-contained film are compounded in sequence and die-cut for the first time through the first circular die-cutting roller group M1. The die of the first circular die-cutting roller group M1 is provided with a plurality of first blades R101 which can die-cut parallel straight die-cutting lines M101. The blade depth of the first blade R101 just cuts through the first protective film strip B1, that is, the first die-cutting cuts the first protective film strip B1 along the length direction of the strip. The first protective film material strip B11 is cut into several thin strips; then the first row of waste rollers P1 removes the self-contained film B12 of the first protective film material strip B1, and then the ultra-thin single-sided adhesive material strip D1 (its self-contained film D11 is peeled off by the second row of waste rollers P2), and the first transition release film material strip G1 are compounded in sequence, and the adhesive surface of the ultra-thin single-sided adhesive material strip D1 faces upward. At this time, the composite material strip is, from bottom to top, the first supporting film material strip T1, several thin strips of the first protective film material strip B11 arranged adjacent to each other along the length direction of the material strip, the ultra-thin single-sided adhesive material strip D1, and the first transition release film material strip G1. a transition release film tape G1; and then the composite tape is die-cut for the second time by a second circular die-cutting roller group M2. The die of the second circular die-cutting roller group M2 is provided with a plurality of second blades R201 which can die-cut the closed contour line M201 of the ultra-thin single-sided adhesive material block 1. The blade depth of the second blade R201 just cuts through the ultra-thin single-sided adhesive tape D1. That is, the second die-cutting cuts out the first transition release film tape G1 and the ultra-thin single-sided adhesive tape D1 and forms the ultra-thin single-sided adhesive material block 1. The ultra-thin single-sided adhesive material block 1 is arranged in several rows along the length direction of the tape. Arrange, and ensure that there is a straight die-cutting line M101 generated by the first die-cutting below each row of ultra-thin single-sided rubber blocks, that is, there are two thin strips of first protective film tapes B11 supporting each row of ultra-thin single-sided rubber blocks; then, the first transition release film tape waste, the ultra-thin single-sided rubber tape waste D12 outside the ultra-thin single-sided rubber blocks, and the first transition release film waste in the ultra-thin single-sided rubber block area are removed through the first row of waste tapes P31 and the third row of waste rollers P3, and then the tape is turned over by the turning roller Z1 to compound with the release film tape L1 below; At this time, the main material strips are, from bottom to top, the release film strip L1 with the release surface facing upward, the ultra-thin single-sided adhesive material block 1 with the adhesive surface facing downward, a plurality of thin first protective film strips B11 completely covering the ultra-thin single-sided adhesive material block 1, and the first bottom film strip T1; Step b: After the main material belt runs out of the front of the first circular die-cutting roller group M1, the waste is removed from the top twice, combined with Figure 4-4 As shown, the first time, the first bottom film strip T1 and part of the thin first protective film strip B11 are removed by the fourth row of waste rollers P4, and it is ensured that there is still a thin first protective film strip compound on each row of ultra-thin single-sided adhesive blocks. In this embodiment, a part of the thin first protective film strip is removed at intervals, that is, Figure 4-4The thin strips of the first protective film material B11 in the strip areas shown in 1, 3, and 5; after one roller position is separated, the remaining thin strips of the first protective film material are removed by the fifth row of waste rollers P5, that is, Figure 4-4 The first protective film strip B11 in the strip area shown in 2, 4, and 6; at this time, the main material strips are, from bottom to top: a release film strip L1 with the release surface facing upward, and an ultra-thin single-sided adhesive block 1 with the adhesive surface facing downward; Step c: Compound the second bottom film strip T2 under the release film strip, and then perform the third die-cutting through the third circular die-cutting roller group M3. The third circular die-cutting roller group M3 has two third blades R301 on the die die that can die-cut the contour lines M301 on both sides of the release film strip, and a positioning hole blade R302 that can die-cut a row of closed positioning hole contour lines M302 on one side edge of the release film strip L1. The blade depths of the third blade R301 and the positioning hole blade R302 are just enough to cut through The release film strip L1; that is, the third die-cutting forms the contour lines on both sides of the release film strip L1 and a row of positioning holes L101; then the second bottom film strip T2 and the waste inside the positioning holes are removed by the sixth row of waste rollers P6 at the bottom, and the waste L11 on both sides of the release film strip is removed by the seventh row of waste rollers P7 at the top; a ejector pin is installed in the positioning hole blade to remove the waste L12 inside the positioning hole together with the second bottom film strip T2; finally, the release paper strip L2 is compounded under the release film strip and rolled up to obtain the finished product.

[0012] Furthermore, in step a, after the first die-cutting to remove the self-contained film B12 of the first protective film material strip B1 and before the composite ultra-thin single-sided adhesive material strip D1, the first surface anti-static treatment C1 (for example, by placing an anti-static eliminator or other means) is performed on the thin strip of the first protective film material strip B11; in step b, after the third die-cutting to remove the upper and lower layer waste materials and before winding, the material strip is subjected to a second surface anti-static treatment C2. The surface anti-static treatment can remove static electricity on the material strip, avoid high-voltage discharge from damaging the material, and avoid static electricity from adsorbing dust, etc., to ensure product quality.

[0013] Although the process of the present invention has more steps, it adopts a high-speed rotary die-cutting process, but can still maintain a relatively high overall production efficiency. Through the transition protection film breaking line method and the step-by-step waste discharge method, on the one hand, the ultra-thin double-sided adhesive can be directly compounded with the product release film without transfer, and on the other hand, it can avoid the formation of knife marks on the finished product release film material strip, thereby avoiding the situation where glue leaks into the knife marks during long-term storage, so that the ultra-thin single-sided adhesive product can be more conveniently peeled off in subsequent use, and finally the product yield rate in normal use is increased to more than 96%, which greatly reduces waste during use and saves costs.

[0014] The above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A production process for 0.01 mm ultra-thin single-sided adhesive tape, comprising a release film tape and ultra-thin single-sided adhesive blocks arranged on the release film tape, the production process adopts a high-speed rotary die-cutting machine, and is characterized by: The running direction of the release film strip is the running direction of the main strip, and the release surface of the release film strip faces upward. The production process includes the following steps: Step a, in front of the release film tape, in the direction opposite to the running direction of the main tape and from bottom to top, the first supporting film tape and the first protective film tape containing the self-contained film are compounded in sequence, and the first circular knife die-cutting roller group is used for the first die-cutting, and the first protective film tape is cut into a plurality of thin strips of the first protective film tape along the length direction of the tape by the first die-cutting; then, the self-contained film of the first protective film tape is removed, and then the ultra-thin single-sided adhesive tape and the first transition release film tape are compounded in sequence, with the adhesive surface of the ultra-thin single-sided adhesive tape facing upwards. At this time, the composite tape is, from bottom to top, the first supporting film tape, a plurality of thin strips of the first protective film tape arranged adjacent to each other along the length direction of the tape, the ultra-thin single-sided adhesive tape, the first transition release film tape film material strip; and then the composite material strip is die-cut for the second time by the second circular knife die-cutting roller group, and the first transition release film material strip and the ultra-thin single-sided adhesive material strip are cut out and formed into ultra-thin single-sided adhesive material blocks by the second die-cutting, and the ultra-thin single-sided adhesive material blocks are arranged in several rows along the length direction of the material strip, and it is ensured that there is a straight die-cutting line generated by the first die-cutting below each row of ultra-thin single-sided adhesive material blocks, that is, there are two thin strips of the first protective film material strip supporting each row of ultra-thin single-sided adhesive material blocks; then the first transition release film material strip waste, the ultra-thin single-sided adhesive material strip waste outside the ultra-thin single-sided adhesive material block, and the first transition release film waste in the ultra-thin single-sided adhesive material block area are excluded, and then the material strip is turned over by the turning roller to compound with the release film material strip below; At this time, the main material strips are, from bottom to top, a release film material strip with the release surface facing upward, an ultra-thin single-sided adhesive material block with the adhesive surface facing downward, a plurality of thin first protective film material strips completely covering the ultra-thin single-sided adhesive material block, and a first bottom film material strip; Step b, after the main material strip runs out of the front of the first circular knife die-cutting roller group, the waste is removed from the top in two steps. The first step is to remove the first bottom film strip and part of the thin first protective film strip, and ensure that there is still a thin first protective film strip compounded on each row of ultra-thin single-sided adhesive blocks; after a roller position is separated, the remaining thin first protective film strip is removed; at this time, the main material strip is from bottom to top: the release film strip with the release surface facing up, and the ultra-thin single-sided adhesive block with the adhesive surface facing down; Step c: Compound a second bottom film strip under the release film strip, and then perform a third die-cutting through a third circular knife die-cutting roller group, the third die-cutting forming the contour lines on both sides of the release film strip and a row of positioning holes; then remove the waste of the second bottom film strip and the inner holes of the positioning holes, and remove the waste on both sides of the release film strip; finally, compound a release paper strip under the release film strip and roll it up to obtain a finished product.

2. The production process for 0.01 mm ultra-thin single-sided adhesive tape according to claim 1, characterized in that: In step a, after the first die-cutting to remove the self-contained film of the first protective film tape and before compounding the ultra-thin single-sided adhesive tape, the first surface static elimination treatment is performed on the thin strip of the first protective film tape.

3. The production process for 0.01 mm ultra-thin single-sided adhesive tape according to claim 1, characterized in that: In step b, after the third die-cutting to remove the upper and lower waste materials and before winding, the material strip is subjected to a second surface antistatic treatment.

4. The production process for 0.01 mm ultra-thin single-sided adhesive tape according to claim 1, characterized in that: In step a, the die of the first circular die-cutting roller group is provided with a plurality of first blades which can die-cut parallel straight die-cutting lines, and the blade depth of the first blade just cuts through the first protective film strip; the self-contained film of the first protective film strip is removed by the first row of waste rollers.

5. The production process for 0.01 mm ultra-thin single-sided adhesive tape according to claim 1 or 4, characterized in that: In step a, the knife die of the second circular knife die-cutting roller group is provided with several groups of second blades that can die-cut the closed contour line of the ultra-thin single-sided adhesive block, and the blade depth of the second blade just cuts through the ultra-thin single-sided adhesive tape; the first transition release film tape waste, the ultra-thin single-sided adhesive tape waste outside the ultra-thin single-sided adhesive block, and the first transition release film waste in the ultra-thin single-sided adhesive block area are removed by the first row of waste tapes and the third row of waste rollers; in step b, the first bottom film tape and part of the thin strips of the first protective film tape are removed by the fourth row of waste rollers, and it is ensured that there is still a thin strip of the first protective film tape compounded on each row of ultra-thin single-sided adhesive blocks; after another roller position is separated, the remaining thin strips of the first protective film tape are removed by the fifth row of waste rollers.

6. The production process for 0.01 mm ultra-thin single-sided adhesive tape according to claim 1 or 4, characterized in that: In step c, the cutting die of the third circular die-cutting roller group is provided with two third blades which can die-cut the contour lines on both sides of the release film material strip, and a positioning hole blade which can die-cut a row of closed positioning hole contour lines on one side edge of the release film material strip, and the blade depths of the third blade and the positioning hole blade just cut through the release film material strip; then the second bottom film material strip and the waste inside the positioning holes are removed through the sixth row of waste rollers below, and the waste on both sides of the release film material strip is removed through the seventh row of waste rollers above; a ejector pin is installed in the positioning hole blade to remove the waste inside the positioning hole together with the second bottom film material strip.

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