Production process of precise small-size multi-section annular double-sided adhesive assembly

Abstract

This invention relates to a manufacturing process for a precision, small-sized, multi-segment annular double-sided adhesive strip assembly. The assembly comprises, from bottom to top, a heavy-duty release film, a double-sided adhesive layer, and a light-duty release film. Each double-sided adhesive layer unit in the assembly is divided into three spaced regions along the length of the strip, containing several double-sided adhesive strips less than 1 mm wide and several double-sided adhesive blocks. The manufacturing process employs a rotary die-cutting machine. The release film is applied in a sequence of heavy-duty film followed by light-duty film. First, the double-sided adhesive layer is laminated with the heavy-duty release film to increase the weight and thickness of the main film and enhance the adhesion of the double-sided adhesive layer. Then, a light transition film is laminated with the light-duty release film, thereby reducing product damage such as double-sided adhesive layer misalignment during waste removal. Waste from the double-sided adhesive strip is removed in a segmented manner using die-cutting blades, further reducing damage during waste removal and increasing the overall product qualification rate to over 92%.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite die-cutting materials for electronic products, and particularly relates to a production process of a precise small-size multi-segment annular double-sided adhesive assembly. BACKGROUND

[0002] Currently, the design of electronic products such as computers, mobile phones and tablet computers is becoming more and more precise, and the size requirement is becoming higher and higher, so the requirements for various composite die-cutting assemblies used in the electronic products are also becoming higher and higher. In some electronic products, a double-sided adhesive assembly with a width less than 1 mm needs to be used. Since the size is very small, it is difficult to control the separation of the double-sided adhesive and various process films (transition films) during production by using conventional processes. Especially for an assembly containing dozens of millimeter-level double-sided adhesive strips / blocks that exist separately, if one or some of the double-sided adhesive strips / blocks are abnormal, the entire assembly will be scrap. Therefore, in the conventional process, the qualified rate of the product is only less than 70%, which causes great waste of material cost and high overall cost. SUMMARY

[0003] The present application aims to overcome the above-mentioned deficiencies in the prior art, and provides a production process of a precise small-size multi-segment annular double-sided adhesive assembly.

[0004] The technical scheme adopted by the present application is as follows: a production process of a precise small-size multi-segment annular double-sided adhesive assembly, the double-sided adhesive strip assembly includes, from bottom to top, a heavy film release film, a double-sided adhesive layer, and a light film release film, wherein the double-sided adhesive layer unit in each double-sided adhesive assembly is divided into three spaced regions along the length direction of the material belt, the first region on one side has a plurality of first double-sided adhesive strips with a width less than 1 mm and a plurality of first double-sided adhesive blocks, the second region in the middle has a plurality of second double-sided adhesive strips with a width less than 1 mm and surrounding a large space, and a plurality of third double-sided adhesive strips with a width less than 1 mm and surrounding a small space and a plurality of second double-sided adhesive blocks are further provided inside the rectangular space, and the third region on the other side has a third double-sided adhesive block;

[0005] The middle part of the heavy film release film and the light film release film is respectively provided with a first through hole and a second through hole, and the first through hole and the second through hole penetrate the internal area of one third double-sided adhesive strip in the middle of the second region of the double-sided adhesive layer unit;

[0006] The spacing between adjacent regions is 7-9 mm; the thickness of the heavy film release film is 2-4 times the thickness of the light film release film, the thickness of the heavy film release film is 0.08-0.15 mm, and the thickness of the double-sided adhesive layer is 0.04-0.06 mm;

[0007] The production process of the double-sided adhesive assembly is carried out by using a rotary die-cutting machine, which includes the following steps:

[0008] Step one: peel off one layer of self-film of double-sided adhesive tape and compound the exposed side with heavy film release film tape, at the same time, compound the first transition film tape under the surface of heavy film release film tape, then peel off the other layer of self-film of double-sided adhesive tape and compound the second transition film tape, at the same time, compound the third transition film tape under the surface of the first transition film tape, the composite tape is cut by the first circular knife die roller group, the first cutting is from above, the continuous double-sided adhesive layer unit is formed on the double-sided adhesive tape by the several double-sided adhesive blades, at the same time, the several closed partition blades cut off the peripheral waste of the double-sided adhesive tape into several disconnected waste, and the first positioning mark line and the heavy film edge line are formed on the composite tape by the first positioning mark line blade and the heavy film edge line blade which cuts through the heavy film of the heavy film release film tape;

[0009] After the first cutting, the second transition film tape waste is removed from above, and the third transition film tape is removed from below, when the third transition film tape is removed, the needle attached to the closed partition blade area of the knife roller of the first circular knife die roller group is used to remove the heavy film release film waste, double-sided adhesive waste and second transition film waste;

[0010] At this time, the composite tape from bottom to top is: the first transition film tape, the heavy film release film tape, the double-sided adhesive tape,

[0011] Step two: compound the first waste tape on the double-sided adhesive tape after step one, and then extract the waste by the second circular knife die roller group, the knife roller of the second circular knife die roller group is provided with several extraction blades, the double-sided adhesive waste at the corresponding position is adhered to the first waste tape by the extraction blades and then removed directly from above;

[0012] Then compound the second waste tape above the tape, and then remove the second transition film waste by adhering the second transition film waste remaining on the double-sided adhesive strip and double-sided adhesive block to the second waste tape, so that the double-sided adhesive layer is completely exposed;

[0013] Step three: compound the fourth transition film tape above the double-sided adhesive layer of the composite tape after step two, and compound the fifth transition film tape below the first transition film tape, then cut by the third circular knife die roller group, the knife roller of the third circular knife die roller group cuts from above, the cutting depth cuts through the first transition film tape, and a first through hole is formed on the heavy film release film tape corresponding to the central small space in the second area by the third closed blade on the knife roller;

[0014] Then remove the fifth transition film tape and the first transition film waste and heavy film release film waste contained in the central small rectangular space from below, and remove the fourth transition film tape from above, at this time, the composite tape from bottom to top is: the first transition film tape, the heavy film release film tape, the double-sided adhesive layer, the first transition film tape and the heavy film release film tape both have a first through hole;

[0015] Step four: above the running direction of the strip in step three, in the reverse direction, the sixth transition film strip and the seventh transition film strip are sequentially compounded under the light film release film strip, and the fourth circular knife die roller group is used for die cutting on the compounded strip, the knife roller of the fourth circular knife die roller group is inwards from above, and a second through hole corresponding to the first through hole on the heavy film release film strip is cut on the light film release film strip by the fourth closed blade thereon;

[0016] Then the light film release film strip and the sixth transition film strip and the seventh transition film strip are flipped by the flipping roller group and are compounded with the compounded strip after step two, at this time, the compounded strip is sequentially from bottom to top: the first transition film strip, the heavy film release film strip, the double-sided adhesive layer, the light film release film strip, the sixth transition film strip and the seventh transition film strip, the first transition film strip and the heavy film release film strip each have a first through hole, and the light film release film strip has a second through hole contour line;

[0017] Then the seventh transition film strip and the sixth transition film strip are sequentially excluded from above, the sixth transition film strip is accompanied by light film release film waste in the second through hole contour line; at this time, from bottom to top, it is sequentially: the first transition film strip, the heavy film release film strip, the double-sided adhesive layer and the light film release film strip; the heavy film release film strip has a first through hole, and the light film release film strip has a second through hole;

[0018] Step five: the fifth circular knife die roller group is used for die cutting on the compounded strip after step four, the outer contour blade on the knife roller of the fifth circular knife die roller group is inwards from above, the die cutting depth cuts through the heavy film release film strip, the outer contours of the heavy film release film and the light film release film are formed, finally, the peripheral waste of the light film release film strip is excluded from above, the peripheral waste of the first transition film strip and the heavy film release film strip is excluded from below, and a cut double-sided adhesive assembly product is obtained.

[0019] In the above production process, the knife roller of the first circular knife die roller group is provided with double-sided adhesive blades corresponding to the shapes of each double-sided adhesive strip and double-sided adhesive block in the double-sided adhesive layer unit, and a plurality of closed partition blades are further provided on the knife roller of the first circular knife die roller group, wherein two first closed partition blades are respectively arranged in the corresponding intervals of the first region, the second region and the third region, and the two sides of the first closed partition blades are respectively coincided with the corresponding double-sided adhesive blades; one second closed partition blade is respectively arranged at each end of each region, and one side of the second closed partition blade is coincided with the double-sided adhesive blade at the end of the corresponding region; the closed partition blades at the coincided positions are protruded relative to the double-sided adhesive blades; the knife roller of the first circular knife die roller group is further provided with a first positioning mark blade for cutting through the first transition film strip and a heavy film edge line blade for cutting through the heavy film release film strip.

[0020] In the production process, the cutter roller of the second circular knife die cutting roller set is provided with a plurality of extraction knife edges, and the positions of the extraction knife edges include: positions corresponding to waste materials between adjacent first regions, second regions and third regions, a position corresponding to waste materials inside the second region, and a position corresponding to waste materials inside the third double-sided adhesive tape in a small rectangular space.

[0021] In the production process, the cutter roller of the third circular knife die cutting roller set is provided with a third closed knife edge corresponding to the position inside the small space in the middle of the second region, and the side length of the third closed knife edge is smaller than the internal size of the small rectangular space.

[0022] In the production process, the cutter roller of the fourth circular knife die cutting roller set is provided with a fourth closed knife edge corresponding to the position of the third closed knife edge on the third circular knife die cutting roller set; and the cutter roller of the fifth circular knife die cutting roller set is provided with an outer contour line knife edge corresponding to the outer contour of the heavy film release film and the light film release film, and the outer contour line knife edge has a handle part knife edge, and the position of the handle part knife edge protrudes from the heavy film edge line knife edge.

[0023] In the production process, the release film adopts the process sequence of heavy film first and light film later, the double-sided adhesive layer is first compounded with the heavy film release film, the main film weight and thickness are increased, the adhesion of the double-sided adhesive layer is enhanced, and then the light transition film and the light film release film are compounded, the weight difference between the light film waste and the main film is large when the light film waste is stripped, so that the light film waste is more easily stripped, and the phenomenon of double-sided adhesive layer dislocation caused by waste stripping is reduced. damage to the product; on the other hand, the waste removal of the double-sided adhesive tape is realized by the die cutting partition knife edge, which is distributed and removed in a partitioned and segmented manner, which also reduces the damage caused during the waste removal process, thereby increasing the overall qualified rate of the product to more than 92%, greatly reducing the defective product rate, and reducing the overall cost of the product. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 、 Figure 2 is a structure diagram of the double-sided adhesive assembly produced by the process of the present application;

[0025] Figure 3 is a process flow diagram of the present application;

[0026] Figure 3-1 、 Figure 3-2 、 Figure 3-3 、 Figure 3-4 、 Figure 3-5 is a first circular knife die cutting roller set, a second circular knife die cutting roller set, a third circular knife die cutting roller set, a fourth circular knife die cutting roller set, and a fifth circular knife die cutting roller set in the process of the present application. The cutter roller is unfolded and the die cutting effect is shown in the schematic diagram;

[0027] Figure 3-6 is Figure 3-1 ,Figure 3-2 、 Figure 3-3 、 Figure 3-4 、 Figure 3-5 The schematic diagram of superposition effect after die cutting;

[0028] The rollers represented by the letters U1-U11 in the figure represent material receiving rollers for winding the waste material tape or the protective film. DETAILED DESCRIPTION

[0029] As shown in Figures 1-3 The present application relates to a production process of a precise small-size multi-section annular double-sided adhesive tape assembly. The double-sided adhesive tape assembly includes, from bottom to top, a heavy film release film 1, a double-sided adhesive layer 2, and a light film release film 3. The double-sided adhesive layer unit in each double-sided adhesive tape assembly is divided into three spaced regions along the length direction of the tape. The first region 21 on one side has a plurality of first double-sided adhesive strips 211 with a width less than 1 mm and a plurality of first double-sided adhesive blocks 212. The second region 22 in the middle has a plurality of second double-sided adhesive strips 221 with a width less than 1 mm, which enclose a large rectangular space. In this embodiment, six second double-sided adhesive strips 221 non-contactingly enclose a large rectangular space, and inside the rectangular space, there are five third double-sided adhesive strips 222 with a width less than 1 mm, which enclose small rectangular spaces, and four second double-sided adhesive blocks 223. Among them, three larger fully enclosed rectangles, two rectangles with small notches, and four second double-sided adhesive blocks 223 are located at the four corners of the large rectangular space. The third region 23 on the other side has a rectangular third double-sided adhesive block 231. In this embodiment, the double-sided adhesive tape assembly has a total of 21 separate double-sided adhesive strips and blocks.

[0030] The heavy film release film 1 and the light film release film 3 are respectively provided with a first through hole 101 and a second through hole 301, which pass through the interior region of one third double-sided adhesive strip 222 in the middle of the second region 22 of the double-sided adhesive layer 2 unit.

[0031] The spacing between adjacent regions in the double-sided adhesive layer 2 unit is 7-9 mm. The thickness of the heavy film release film 1 is 2-4 times the thickness of the light film release film 3. The thickness of the heavy film release film 1 is 0.08-0.15 mm, and the thickness of the double-sided adhesive layer 2 is 0.04-0.06 mm.

[0032] In this embodiment, the thickness of the heavy film release film is 0.1 mm, the thickness of the light film release film is 0.035 mm, and the thickness of the double-sided adhesive layer is 0.05 mm.

[0033] The production process of the double-sided adhesive tape assembly is carried out by using a rotary die cutting machine, which includes the following steps:

[0034] Step one: peel off one layer of self-film of double-sided adhesive tape S1 and compound the exposed side with heavy film release film tape L1, at the same time, compound the first transition film tape G1 under the heavy film release film tape L1, then peel off the other layer of self-film of double-sided adhesive tape S1 and compound the second transition film tape G2, at the same time, compound the third transition film tape G3 under the first transition film tape G1, then the compound tape is subjected to first die cutting by the first circular knife die roller group M1, the first die cutting is from above the tape, i.e. from the second transition film tape G2, the knife roller of the first circular knife die roller group M1 is provided with double-sided adhesive blade M101 corresponding to the shape of each double-sided adhesive strip and double-sided adhesive block in the double-sided adhesive layer 2 unit, the die cutting depth of the double-sided adhesive blade M101 is just cut through the double-sided adhesive tape S1, so that the adhesive strips and blocks in the double-sided adhesive layer 2 unit are formed on the double-sided adhesive tape S1; the knife roller of the first circular knife die roller group M1 is also provided with a plurality of closed partition blades M102, the die cutting depth of the closed partition blade M102 cuts through the first transition film tape G1, so that the peripheral waste of the double-sided adhesive tape S1 is divided into a plurality of disconnected waste blocks, which is convenient for being removed respectively; if the whole is removed, the waste will be stuck to the adhesive strips, causing defective products;

[0035] In the first region 21, the second region 22 and the third region 23, two first closed partition blades M1021 are respectively arranged in the corresponding intervals, and the two sides of the first closed partition blade M1021 are respectively coincided with the corresponding double-sided adhesive blade M101; one second closed partition blade M1022 is respectively arranged at the two ends of each region, and one side of the second closed partition blade M1022 is coincided with the double-sided adhesive blade M101 at the end of the corresponding region; the closed partition blade protrudes relative to the double-sided adhesive blade at the coincided position; the knife roller of the first circular knife die roller group M1 is also provided with a first positioning mark line blade M103 cutting through the first transition film tape G1 and a heavy film edge line blade M104 cutting through the heavy film release film tape L1, so as to form the first positioning mark line and the heavy film edge line on the compound tape;

[0036] In this embodiment, three groups of blades are arranged on the knife roller of the first circular knife die roller group M1, i.e. three double-sided adhesive layer units are formed at a time; the first positioning mark line has three positioning mark points, which are No. 1, No. 2 and No. 3 positioning mark points;

[0037] After the first die cutting, the peripheral waste of the second transition film tape G2 is removed from above, and the third transition film tape G3 is removed from below; when the third transition film tape G3 is removed, the heavy film release film waste, double-sided adhesive waste and second transition film waste in the area of the closed partition blade M102 are removed by the needle attached to the closed partition blade M102 on the knife roller of the first circular knife die roller group M1;

[0038] At this time, the compound tape is from bottom to top: first transition film tape G1, heavy film release film tape L1, double-sided adhesive tape S1;

[0039] Step two: compound the first row of waste tape P1 on the double-sided tape belt S1 passed through step one, and then extract the waste through the second circular knife die roller group M2. The knife roller of the second circular knife die roller group M2 is provided with a plurality of extraction knife edges M201. The positions of the extraction knife edges M201 include: the positions corresponding to the waste materials between the first region 21, the second region 22, and the third region 23 adjacent to the double-sided tape belt S1, the positions corresponding to the waste materials inside the second region, and the positions corresponding to the waste materials inside the third double-sided adhesive tape in the small rectangular space; the knife roller of the second circular knife die roller group M2 is also provided with a second positioning mark line knife edge M202 to form a second positioning mark line corresponding to the position of the first positioning mark point in the first positioning mark line;

[0040] The double-sided adhesive waste materials at the corresponding positions are adhered to the first row of waste tape P1 and then directly excluded from above through the extraction knife edges M201;

[0041] Then compound the second row of waste tape P2 above the tape, and then exclude the second transition film waste materials through the adhesion of the second row of waste tape P2 and the residual second transition film waste materials on the double-sided adhesive tape and double-sided adhesive block, so that the double-sided adhesive layer 2 is completely exposed;

[0042] Step three: compound the fourth transition film tape G4 above the double-sided adhesive layer 2 of the compound tape passed through step two, and compound the fifth transition film tape G5 below the first transition film tape G1, and then perform die cutting through the third circular knife die roller group M3. The knife roller of the third circular knife die roller group M3 cuts from above, and the die cutting depth cuts through the first transition film tape G1. The knife roller of the third circular knife die roller group M3 is provided with a third closed knife edge M301 corresponding to the internal position of the central small rectangular space in the second region 22, and the side length of the third closed knife edge M301 is smaller than the internal size of the central small rectangular space, so that a first through hole 101 is formed in the central small rectangular space. The knife roller of the third circular knife die roller group M3 is also provided with a third positioning mark line knife edge M302 to form a third positioning mark line corresponding to the position of the third positioning mark point in the first positioning mark line;

[0043] Then, the first transition film waste materials and the heavy film release film waste materials contained in the central small rectangular space and the fourth transition film waste materials are excluded from below, and the fourth transition film tape G4 is excluded from above. At this time, the compound tape is sequentially from bottom to top: the first transition film tape G1, the heavy film release film tape L1, and the double-sided adhesive layer 2. The first transition film tape G1 and the heavy film release film tape L1 both have a first through hole 101;

[0044] Step four: above the running direction of the composite material tape in step three, the sixth transition film material tape G6 and the seventh transition film material tape G7 are sequentially compounded under the light film release film material tape L2 in the opposite direction, and the composite material tape is die-cut by the fourth circular knife die roller group M4. The knife roller of the fourth circular knife die roller group M4 cuts in from above, and the knife roller is provided with a fourth closed blade M401 corresponding to the position of the third closed blade M301 on the third circular knife die roller group M3. The fourth closed blade M401 cuts a second through hole 301 on the light film release film material tape L2 corresponding to the first through hole 101 on the heavy film release film material tape L1. The knife roller of the fourth circular knife die roller group M4 is also provided with a fourth positioning mark line blade M402 to form a fourth positioning mark line, and the fourth positioning mark line corresponds to the position of the No. 2 positioning mark point in the first positioning mark line.

[0045] Then the light film release film material tape L2 and the sixth transition film material tape G6 and the seventh transition film material tape G7 are flipped by the flipping roller group Z1 and then compounded with the composite material tape after step two. At this time, the composite material tape from bottom to top is: the first transition film material tape G1, the heavy film release film material tape L1, the double-sided adhesive layer 2, the light film release film material tape L2, the sixth transition film material tape G6, and the seventh transition film material tape G7. The first transition film material tape G1 and the heavy film release film material tape L1 each have a first through hole 101, and the light film release film material tape L2 has a second through hole contour line.

[0046] Then the seventh transition film material tape G7 and the sixth transition film material tape G6 are sequentially excluded from above, and the sixth transition film material tape G6 is accompanied by light film release film waste within the second through hole contour line. At this time, from bottom to top, it is: the first transition film material tape G1, the heavy film release film material tape L1, the double-sided adhesive layer 2, and the light film release film material tape L2. The heavy film release film material tape L1 has a first through hole 101, and the light film release film material tape L2 has a second through hole 301.

[0047] Step five: the composite material tape after step four is die-cut by the fifth round knife die roller group M5, the knife roller of the fifth round knife die roller group M5 is provided with an outer contour line cutter blade M501 corresponding to the outer contour of the heavy film release film 1 and the light film release film 3, the cutter blade M501 cuts from above, and the die-cutting depth cuts through the heavy film release film tape L1, so that the heavy film release film 1 and the light film release film 3 with the same shape are formed; the knife roller of the fifth round knife die roller group M5 is also provided with a fifth positioning mark line cutter blade M502, so as to form a fifth positioning mark line, the fifth positioning mark line corresponds to the position of the third positioning mark point in the first positioning mark line; and a handle part 11(31) is formed by the handle part cutter blade M503, the handle part of the light film release film 3 protrudes from the heavy film release film 1, so that the light film release film 3 can be peeled off first when used, finally, the peripheral waste of the light film release film tape L2 is removed from above, the peripheral waste of the first transition film tape G1 and the heavy film release film tape L2 is removed from below, and a cut double-sided adhesive assembly finished product is obtained.

[0048] The present application adopts the above process, on the one hand, the release film adopts the process sequence of heavy film first and light film later, the double-sided adhesive layer is first compounded with the heavy film release film, the main film weight and thickness are increased, the double-sided adhesive layer adhesion is enhanced, and then the light transition film and the light film release film are compounded, the weight difference between the light film waste and the main film is large when the light film waste is peeled off, so that the light film waste is more easily peeled off, thereby reducing the phenomenon of double-sided adhesive layer misalignment and other damage to the product caused by waste peeling; on the other hand, the waste of the double-sided adhesive tape is removed by the die-cutting partition cutter blade, which realizes partition and segmented distribution and removal, also reduces the damage caused in the waste removal process, and further improves the overall qualified rate of the product to more than 92%, greatly reduces the defective product rate, and reduces the overall cost of the product.

[0049] It can be understood that the above embodiments are only exemplary embodiments adopted for the purpose of illustrating the principles of the present application, but the present application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present application, and these modifications and improvements are also considered to be within the protection scope of the present application.

Claims

1. A process for producing a precision small size multi-segmented annular double sided tape assembly, characterized by: The double-sided adhesive assembly comprises, from bottom to top, a heavy film release film, a double-sided adhesive layer, and a light film release film, wherein the double-sided adhesive layer unit in each double-sided adhesive assembly is divided into three spaced regions along the length direction of the material tape, the first region on one side has a plurality of first double-sided adhesive strips with a width less than 1 mm and a plurality of first double-sided adhesive blocks, the second region in the middle has a plurality of second double-sided adhesive strips with a width less than 1 mm forming a large rectangular space, and inside the large rectangular space, a plurality of third double-sided adhesive strips with a width less than 1 mm forming a small rectangular space and a plurality of second double-sided adhesive blocks, and the third region on the other side has a third double-sided adhesive block; The middle part of the heavy film release film and the light film release film is respectively provided with a first through hole and a second through hole, and the internal area of one third double-sided adhesive strip in the middle of the second region of the double-sided adhesive layer unit is penetrated; The spacing between adjacent regions is 7-9 mm; the thickness of the heavy film release film is 2-4 times the thickness of the light film release film, the thickness of the heavy film release film is 0.08-0.15 mm, and the thickness of the double-sided adhesive layer is 0.04-0.06 mm; The production process of the double-sided adhesive assembly is carried out by a rotary die cutting machine, which comprises the following steps: Step one: first, peel off one layer of self-film of the double-sided adhesive material tape and compound the exposed side downward with the heavy film release film material tape, at the same time, compound the first transition film material tape under the surface of the heavy film release film material tape, then peel off the other layer of self-film of the double-sided adhesive material tape and compound the second transition film material tape, at the same time, compound the third transition film material tape under the surface of the first transition film material tape, and perform first die cutting on the compound material tape by the first circular knife die roller group, the first die cutting is from above the material tape, a plurality of double-sided adhesive blades on it form a continuous double-sided adhesive layer unit on the double-sided adhesive material tape, at the same time, a plurality of closed partition blades on it divide the peripheral waste of the double-sided adhesive material tape into a plurality of disconnected waste, and a first positioning mark line and a heavy film edge line are formed on the compound material tape by the first positioning mark line blade and the heavy film edge line blade which cuts through the heavy film release film material tape; After the first die cutting, the second transition film material tape waste is excluded from above, and the third transition film material tape is excluded from below, and the needle attached to the closed partition blade area is used to exclude the heavy film release film waste, double-sided adhesive waste, and second transition film waste in the area when the third transition film material tape is excluded; At this time, the compound material tape is, from bottom to top, the first transition film material tape, the heavy film release film material tape, and the double-sided adhesive material tape, Step two: compound the first waste tape on the double-sided adhesive material tape after step one, and then extract the waste by the second circular knife die roller group, the knife roller of the second circular knife die roller group is provided with a plurality of extraction blades, the double-sided adhesive waste at the corresponding position is adhered to the first waste tape by the extraction blades and then directly excluded from above; Then compound the second waste tape above the material tape, and then exclude the second transition film waste by adhering the second transition film waste remaining on the double-sided adhesive strip and double-sided adhesive block to the second waste tape, so that the double-sided adhesive layer is completely exposed; Step three: compound the fourth transition film material tape above the double-sided adhesive layer of the composite material tape after step two, compound the fifth transition film material tape below the first transition film material tape, and then perform die cutting through the third circular knife die roller group. The knife roller of the third circular knife die roller group cuts from above, and the die cutting depth cuts through the first transition film material tape. A first through hole is formed on the heavy release film material tape corresponding to the central small space in the second area through the third closed knife edge on the knife roller. Then, the first transition film waste and the heavy release film waste in the central small rectangular space, the fourth transition film waste are excluded from below, and the fourth transition film material tape is excluded from above. At this time, the composite material tape from bottom to top is: the first transition film material tape, the heavy release film material tape, the double-sided adhesive layer, the first transition film material tape, and the heavy release film material tape both have a first through hole. Step four: compound the sixth transition film material tape and the seventh transition film material tape below the light release film material tape in the opposite direction above the material tape running direction in step three, and then perform die cutting on the composite material tape through the fourth circular knife die roller group. The knife roller of the fourth circular knife die roller group cuts from above, and the fourth closed knife edge on the knife roller cuts a second through hole on the light release film material tape corresponding to the first through hole on the heavy release film material tape. Then, the light release film material tape and the sixth transition film material tape and the seventh transition film material tape are flipped by the flipping roller group and then compounded with the composite material tape after step two. At this time, the composite material tape from bottom to top is: the first transition film material tape, the heavy release film material tape, the double-sided adhesive layer, the light release film material tape, the sixth transition film material tape, and the seventh transition film material tape. The first transition film material tape and the heavy release film material tape both have a first through hole, and the light release film material tape has a second through hole contour line. Then, the seventh transition film material tape and the sixth transition film material tape are excluded from above, and the light release film material waste in the second through hole contour line is also excluded from the sixth transition film material tape. At this time, from bottom to top, it is: the first transition film material tape, the heavy release film material tape, the double-sided adhesive layer, and the light release film material tape. The heavy release film material tape has a first through hole, and the light release film material tape has a second through hole. Step five: perform die cutting on the composite material tape after step four through the fifth circular knife die roller group. The outer contour line knife edge of the knife roller of the fifth circular knife die roller group cuts from above, and the die cutting depth cuts through the heavy release film material tape. The heavy release film and the light release film outer contour are formed, and finally the peripheral waste of the light release film material tape is excluded from above, and the peripheral waste of the first transition film material tape and the heavy release film material tape is excluded from below. The double-sided adhesive assembly product is obtained.

2. The process for producing a precision small size multi-segmented annular double sided tape assembly of claim 1, wherein: The knife roller of the first circular knife die roller set is provided with double-sided adhesive blades corresponding to the shapes of each double-sided adhesive strip and double-sided adhesive block in the double-sided adhesive layer unit. The knife roller of the first circular knife die roller set is also provided with a plurality of closed partition blades. Two first closed partition blades are respectively arranged in the corresponding intervals of the first region, the second region, and the third region, and the two sides of the first closed partition blades respectively coincide with the corresponding double-sided adhesive blades. One second closed partition blade is respectively arranged at each end of each region, and one side of the second closed partition blade coincides with the double-sided adhesive blade at the end of the corresponding region. The closed partition blades protrude relative to the double-sided adhesive blades at the coinciding positions. The knife roller of the first circular knife die roller set is also provided with a first positioning mark line blade for cutting through the first transition film material belt and a heavy film edge line blade for cutting through the heavy film release film material belt.

3. The process for producing a precision small size multi-segmented annular double sided tape assembly of claim 1, wherein: The knife roller of the second circular knife die roller set is provided with a plurality of extraction blades. The positions of the extraction blades include: positions corresponding to the waste materials between adjacent first regions, second regions, and third regions, positions corresponding to the waste materials inside the second regions, and positions corresponding to the waste materials inside the third double-sided adhesive strips in the small rectangular spaces.

4. The process for producing a precision small size multi-segmental annular double- sided tape assembly of claim 1, wherein: The knife roller of the third circular knife die roller set is provided with a third closed blade corresponding to the position inside the small space in the middle of the second region, and the edge length of the third closed blade is smaller than the internal dimension of the small rectangular space.

5. The process for producing a precision small size multi-segmented annular double sided tape assembly of claim 1, wherein: The knife roller of the fourth circular knife die roller set is provided with a fourth closed blade corresponding to the position of the third closed blade on the third circular knife die roller set. The knife roller of the fifth circular knife die roller set is provided with an outer contour line blade corresponding to the outer contour of the heavy film release film and the light film release film. The outer contour line blade has a handle blade, and the position of the handle blade protrudes from the heavy film edge line blade.

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