Bobbin cloth-based adhesive tape containing perforated release layer

Abstract

The invention relates to a bobbin cloth-based adhesive tape containing a perforated release layer. Specifically, by arranging the perforation structure on the release layer, the problems of slippage and difficult forming in the winding process of the bobbin cloth-based adhesive tape can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the field of tapes, and particularly to a spool cloth-based tape with a perforated release layer. Background Art

[0002] With the automation of high-voltage wire harness production, the spool cloth-based tape has a length of more than 2000 meters while maintaining the same performance as that of ordinary small rolls, thus being favored by current vehicle manufacturers and wire harness factories. It can bring benefits such as efficient wrapping and reduced changeover time.

[0003] The spool cloth-based tape usually consists of an adhesive layer (necessary structure) and a base material (polyester cloth base). Although the structure is simple, its winding form has changed greatly, from the common 25-meter small roll to the spool form of reciprocating winding of more than 2000 meters. This form has posed great challenges to the adhesive layer and the base material layer, and many problems have arisen due to the special structure of the cloth base and the special winding method: flying filaments and overflowing glue, shortened storage life, etc.

[0004] To solve the above problems, a release layer is introduced into the spool cloth-based tape. The structural evolution is as Figure 1 shown: Currently, the spool cloth-based tape consists of a base material layer, an adhesive layer, and a release layer. The design method of this spool cloth-based tape is very simple, but it has the following three disadvantages: 1. Winding slippage, that is, it is not easy to form after winding, and it is easy to slip between layers; 2. Large consumption of the release layer, that is, in order to solve the slippage problem, a design with the area of the release layer being twice that of the base material layer is adopted ( Figure 2 ); 3. Low production efficiency, that is, the equipment that could originally produce 21 spools at a time can only produce half of the original number of spools due to the limited width of the release paper. Summary of the Invention

[0005] The purpose of the present invention is to provide a spool cloth-based tape with a perforated release layer.

[0006] In the first aspect of the present invention, a spool cloth-based tape is provided, which sequentially includes the following structures:

[0007] 1) A base material layer located at the bottom layer;

[0008] 2) An adhesive layer located in the middle layer; and

[0009] 3) A release layer located at the top layer;

[0010] A perforation structure is provided on the release layer.

[0011] In another preferred example, the material of the release layer is selected from the following group: PEK release paper, Glassine release paper, PET release film, PE release film, OPP release film, or a combination thereof.

[0012] In another preferred example, the thickness of the release layer is 2.5 microns to 260 microns.

[0013] In another preferred example, the length of the base material layer and the length of the adhesive layer are greater than or equal to the length of the release layer.

[0014] In another preferred example, the width of the base material layer and the width of the adhesive layer are greater than or equal to the width of the release layer.

[0015] In another preferred example, on the release layer, the total area of the region of the perforated structure accounts for 3% - 95% of the total area of the release layer before perforation.

[0016] In another preferred example, the perforated structures are uniformly distributed or randomly distributed on the release layer.

[0017] In another preferred example, the shape of the perforated structure is selected from the following group: circular, oval, triangular, quadrilateral, polygonal, composite figure, strip-shaped.

[0018] In another preferred example, the equivalent width of a single perforated structure is 10% - 90% of the width of the tape; and / or

[0019] The equivalent diameter of a single perforated structure is 10% - 90% of the width of the tape.

[0020] In another preferred example, the tape is in the form of a roll;

[0021] The number of winding times of the tape is 30 times - 50000 times.

[0022] It should be understood that within the scope of the present invention, the above-mentioned various technical features of the present invention and the various technical features specifically described below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be elaborated one by one here. Description of the Drawings

[0023] Figure 1 Shows the structural evolution of the spool cloth-based tape. The left figure is the structure of a common product on the current market, and the right figure is the structure of the preliminary improvement of the present invention.

[0024] Figure 2 Shows the structure of the spool cloth-based tape of the preliminary improvement of the present invention.

[0025] Figure 3 Shows the structure of the spool cloth-based tape with a perforated release layer of the present invention. Detailed Embodiments

[0026] After long-term and in-depth research, the inventor of the present invention obtained the spool cloth-based tape with a perforated release layer described in the present invention by optimizing the structural design. Specifically, by providing a perforated structure on the release layer, part of the adhesive layer material can adhere to the adjacent cloth-based substrate layer through the holes, thereby playing an anti-slip role. In this way, there is almost no requirement for the friction force on the non-release surface of the release layer; at the same time, the area of the release layer is equal to or smaller than the area of the substrate layer, which can significantly reduce material loss and significantly improve production efficiency. On this basis, the inventor completed the present invention.

[0027] Spool cloth-based tape with a perforated release layer

[0028] The present invention provides a spool cloth-based tape, which sequentially includes the following structures:

[0029] 1) A substrate layer located at the bottom layer;

[0030] 2) An adhesive layer located in the middle layer; and

[0031] 3) A release layer located at the top layer;

[0032] A perforated structure is provided on the release layer.

[0033] In another preferred example, the substrate layer is a fabric produced by weaving, knitting, non-woven or braiding from a material selected from the following group: polyester fiber (polyester), polyamide fiber (nylon or polyamide), polyvinyl alcohol fiber (vinylon), polyacrylonitrile fiber (acrylic), polypropylene fiber (polypropylene), polyvinyl chloride fiber (chloroprene), rayon, inorganic fiber, natural fiber.

[0034] In another preferred example, the thickness of the substrate layer is 20 μm - 1000 μm, preferably 52 μm - 500 μm, more preferably 130 μm - 270 μm.

[0035] In another preferred example, the width of the substrate layer is 5 mm - 2500 mm, preferably 9 mm - 1650 mm, more preferably 19 mm - 50 mm.

[0036] In another preferred example, the length of the substrate layer is 0.297 m - 100000 m, preferably 25 m - 5000 m, more preferably 2000 m - 4000 m.

[0037] In another preferred example, the density of the substrate layer is 15 roots / cm² - 600 roots / cm², preferably 50 roots / cm² - 350 roots / cm², more preferably 65 roots / cm² - 100 roots / cm².

[0038] In another preferred example, the lower limit of the tensile strength of the substrate layer is selected from the following group: 50 N / cm, 60 N / cm, 70 N / cm, 100 N / cm, 130 N / cm, 160 N / cm, 240 N / cm.

[0039] In another preferred example, the upper limit of the tensile strength of the substrate layer is selected from the following group: 300 N / cm, N / cm, 350 N / cm, 390 N / cm, 500 N / cm.

[0040] In another preferred example, the adhesive layer is made of an adhesive selected from the following group: acrylic adhesive, polyurethane adhesive, polystyrene adhesive, ethylene-vinyl acetate copolymer adhesive, butyl rubber, vinyl acetate resin, polyacrylate, epoxy resin, modified silane polymer adhesive.

[0041] In another preferred example, the thickness of the adhesive layer is 5 μm - 100 μm, preferably 20 μm - 90 μm, more preferably 25 μm - 75 μm.

[0042] In another preferred example, the width of the adhesive layer is 5 mm - 2500 mm, preferably 9 mm - 1650 mm, more preferably 19 mm - 50 mm.

[0043] In another preferred example, the length of the adhesive layer is 0.297 m - 100000 m, preferably 25 m - 5000 m, more preferably 2000 m - 4000 m.

[0044] In another preferred example, the material of the release layer is selected from the following group: PEK release paper, Glassine release paper, PET release film, PE release film, OPP release film, or a combination thereof.

[0045] In another preferred example, the thickness of the release layer is 2.5 μm - 260 μm, preferably 12 μm - 150 μm, more preferably 23 μm - 120 μm.

[0046] In another preferred example, the width of the release layer is 5 mm - 2500 mm, preferably 9 mm - 1650 mm, more preferably 19 mm - 60 mm.

[0047] In another preferred example, the length of the release layer is 0.297 m - 100000 m, preferably 25 m - 5000 m, more preferably 2000 m - 4000 m.

[0048] In another preferred example, the length L1 of the substrate layer and the length L2 of the adhesive layer are greater than or equal to the length L3 of the release layer.

[0049] L3 / L1 is 0.6 - 1, preferably 0.7 - 0.95, more preferably 0.8 - 0.9.

[0050] L3 / L2 is 0.6 - 1, preferably 0.7 - 0.95, more preferably 0.8 - 0.9.

[0051] In another preferred example, the width W1 of the substrate layer and the width W2 of the adhesive layer are greater than or equal to the width W3 of the release layer.

[0052] W3 / W1 is 0.6 - 1, preferably 0.7 - 0.95, more preferably 0.8 - 0.9.

[0053] W3 / W2 is 0.6 - 1, preferably 0.7 - 0.95, more preferably 0.8 - 0.9.

[0054] In another preferred example, on the release layer, the lower limit of the total area of the regions of the perforation structure accounting for the total area of the release layer before perforation is selected from the following group: 3%, 5%, 7%, 10%, 15%, 20%, 25%, 30%, 35%, 40%.

[0055] In another preferred example, on the release layer, the upper limit of the total area of the regions of the perforation structure accounting for the total area of the release layer before perforation is selected from the following group: 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 70%, 80%, 90%, 95%.

[0056] In another preferred example, the perforation structure is uniformly distributed or randomly distributed on the release layer.

[0057] In another preferred example, the "uniform distribution" means that the density of the perforation structure on any unit area of the release layer is d1, and the density of the perforation structure on the entire release layer is d2, and d1 / d2 is 0.9 - 1.1, preferably 0.95 - 1.05, and preferably 1.

[0058] In another preferred example, when the perforation structure is circular, d2 is 80 - 200 per meter, preferably 120 - 180 per meter, more preferably 130 - 150 per meter.

[0059] In another preferred example, when the perforation structure is strip-shaped, d2 is 1 - 10 strips per meter, preferably 1 - 5 strips per meter, more preferably 1 - 3 strips per meter.

[0060] In another preferred example, the shape of the perforation structure is selected from the following group: circular, oval, triangular, quadrilateral, polygonal, composite figure, strip-shaped.

[0061] In another preferred example, the lower limit of the equivalent length of a single said perforation structure is selected from the following group: 1 mm, 3 mm, 5 mm, 7 mm, 10 mm, 15 mm, 20 mm, 30 mm, 50 mm, 80 mm, 100 mm, 200 mm, 300 mm, 500 mm, 800 mm, 1000 mm.

[0062] In another preferred example, the upper limit of the equivalent length of a single said perforation structure is selected from the following group: 20 mm, 30 mm, 50 mm, 80 mm, 100 mm, 200 mm, 300 mm, 500 mm, 800 mm, 1000 mm, 5000 mm, 10000 mm, 50000 mm, 100000 mm, 500000 mm, 1000000 mm, 1500000 mm, 2000000 mm, 2500000 mm, 3000000 mm, 5000000 mm, 8000000 mm.

[0063] In another preferred example, the equivalent width of a single said perforation structure is 10%-90% of the tape width (for descriptions of non-circular shapes, such as strips), preferably 15%-85%, more preferably 20%-80%.

[0064] In another preferred example, the lower limit of the equivalent width of a single said perforation structure is selected from the following group: 1 mm, 3 mm, 5 mm, 7 mm, 10 mm, 15 mm, 20 mm, 30 mm, 50 mm, 80 mm, 100 mm, 200 mm, 300 mm, 500 mm, 800 mm, 1000 mm.

[0065] In another preferred example, the upper limit of the equivalent width of a single said perforation structure is selected from the following group: 20 mm, 30 mm, 50 mm, 80 mm, 100 mm, 200 mm, 300 mm, 500 mm, 800 mm, 1000 mm.

[0066] In another preferred example, the equivalent diameter of a single said perforation structure is 10%-90% of the tape width (for descriptions of circles), preferably 15%-70%, more preferably 20%-40%.

[0067] In another preferred example, the lower limit of the equivalent diameter of a single said perforation structure is selected from the following group: 1 mm, 3 mm, 5 mm, 7 mm, 10 mm, 15 mm, 20 mm, 30 mm, 50 mm, 80 mm, 100 mm, 200 mm, 300 mm, 500 mm, 800 mm, 1000 mm.

[0068] In another preferred example, the upper limit of the equivalent diameter of a single said perforated structure is selected from the following group: 10 mm, 15 mm, 20 mm, 30 mm, 50 mm, 80 mm, 100 mm, 200 mm, 300 mm, 500 mm, 800 mm, 1000 mm.

[0069] In another preferred example, the thickness of the tape is 25 μm - 1100 μm, preferably 50 μm - 500 μm, more preferably 200 μm - 310 μm.

[0070] In another preferred example, the width of the tape is 5 mm - 2500 mm, preferably 9 mm - 1650 mm, more preferably 19 mm - 50 mm.

[0071] In another preferred example, the lower limit of the length of the tape is selected from the following group: 0.297 m, 10 m, 20 m, 50 m, 80 m, 100 m, 150 m, 200 m, 250 m, 300 m, 500 m, 800 m, 1000 m, 1200 m, 1500 m, 1800 m, 2000 m, 2250 m, 2500 m.

[0072] In another preferred example, the upper limit of the length of the tape is selected from the following group: 3000 m, 3500 m, 4000 m, 4500 m, 5000 m, 6000 m, 7000 m, 8000 m, 100000 m.

[0073] In another preferred example, the tape is in the form of a roll.

[0074] In another preferred example, the diameter of the paper tube serving as the support for the roll is 10 - 20 cm, preferably 13 - 17 cm.

[0075] In another preferred example, the number of winding times of the tape is 30 - 50000 times, preferably 2000 - 10000 times, more preferably 5000 - 9000 times.

[0076] In another preferred example, in the roll, the base material layer is on the outside and the release layer is on the inside, or the base material layer is on the inside and the release layer is on the outside.

[0077] In another preferred example, the roll has a fly - wire property selected from the following group:

[0078] 1) After aging at 20 - 30 °C for 1 month, during the complete unwinding process, there is no fly - wire in the whole roll (i.e., the number of fly - wires is 0);

[0079] 2) After aging at 40 °C for 1 month, during the complete unwinding process, there is no fly - wire in the whole roll (i.e., the number of fly - wires is 0).

[0080] In another preferred example, no flying filaments occur during the entire unwinding process of the coil material.

[0081] In another preferred example, the number of flying filaments of the coil material during the entire unwinding process is ≤ 5 filaments / 3000 m, preferably ≤ 3 filaments / 3000 m, more preferably ≤ 1 filament / 3000 m.

[0082] In another preferred example, after aging at room temperature for 1 month, no flying filaments occur during the entire unwinding process of the coil material.

[0083] In another preferred example, after aging at room temperature for 1 month, the number of flying filaments of the coil material during the entire unwinding process is ≤ 5 filaments / 3000 m, preferably ≤ 3 filaments / 3000 m, more preferably ≤ 1 filament / 3000 m.

[0084] In another preferred example, the unwinding speed of the unwinding is 3 - 20 m / min, preferably 5 - 15 m / min, more preferably 8 - 12 m / min.

[0085] In another preferred example, after being vertically placed for 12 months (preferably 6 months, more preferably 15 min), the tape has no longitudinal slippage (i.e., the slippage distance is 0 mm).

[0086] In another preferred example, in the transverse slippage test, after 12 months (preferably 6 months, more preferably 15 min), the tape has no transverse slippage (i.e., the slippage distance is 0 mm).

[0087] In another preferred example, after storing at 20 - 30°C for 12 months, no glue overflow occurs in the coil material.

[0088] In another preferred example, after storing at 20 - 30°C for 12 months, the 180° steel plate peeling force performance of the coil material is greater than 1.4 N / cm, that is, it is still effective.

[0089] Compared with the prior art, the present invention has the following main advantages:

[0090] (1) The tape of the present invention is provided with a perforation structure in the release layer, which can effectively avoid the coiling slippage of the tape. The tape obtained by coiling is very easy to form, and there is basically no slippage problem between layers;

[0091] (2) The tape of the present invention is provided with a perforation structure in the release layer, which can optimize the production process flow, improve production efficiency, and reduce labor costs;

[0092] (3) The tape of the present invention is provided with a perforation structure in the release layer, which effectively avoids the problems of flying filaments and glue overflow, and at the same time extends the storage life of the tape.

[0093] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. The experimental methods without specific conditions noted in the following embodiments are generally carried out under conventional conditions or according to the conditions recommended by the manufacturer. Unless otherwise stated, percentages and parts are calculated by weight.

[0094] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to the described content can be applied to the method of the present invention. The preferred implementation methods and materials described herein are only for demonstration purposes.

[0095] General test methods

[0096] Flying fiber test

[0097] Place the reel tape (i.e., the coil) in a room temperature environment (20 - 30 °C) and an aging environment of 40 °C. After aging for 1 month and 3 months respectively, take out the tape and use the automatic unwinding device for the reel tape to unwind the tape at a speed of 10 m / min until the tape is completely unwound (during the unwinding process, the reel tape is unwound horizontally). The online monitoring system automatically detects the number of warp yarns flying out from the base material layers on both sides of the tape. Monitor the feasibility of this method according to the standard of 5 roots / 3000 meters.

[0098] Slip test

[0099] Longitudinal slip : In a room temperature environment, place the reel tape vertically on a horizontal test bench, parallel to the measuring scale, and observe the downward displacement distance of the reel tape every 15 minutes according to the detection system. The initial position of the reel tape is in the middle of the paper tube, with spaces left at both ends (i.e., no tape is wound).

[0100] Transverse slip : Install the reel tape on the automatic unwinding device (i.e., the reel tape is unwound horizontally), use the sweeping component (friction coefficient 0.6 - 0.78) to rub the surface of the tape, observe the displacement distance of the tape strip and measure it. Monitor the feasibility of this method according to the standard that the displacement distance is less than the winding gap of the tape strip.

[0101] Glue overflow : The glue on the front side of the base material overflows to the side of the base material or the back side of the lower base material.

[0102] Lifespan : From the date when the tape leaves the production line until the date of performance failure, that is, until the 180° steel plate peeling force ≤ 1.4 N / cm.

[0103] Example 1 Tape 1 and Coil 1

[0104] The tape 1 sequentially includes the following structures:

[0105] 1) Substrate layer: a polyester fiber fabric with a thickness of 200 microns, a width of 19 mm, a density of 75 threads per square centimeter, and a tensile strength of 280 N / cm;

[0106] 2) Adhesive layer: a polyacrylate adhesive with a thickness of 50 microns and a width of 19 mm;

[0107] 3) Release layer: a PET release film with a thickness of 23 microns and a width of 19 mm. The perforated structure has the following characteristics: evenly distributed, circular in shape, with a diameter of 5 mm, a density of 132 per meter, and the total area of the perforated structure accounts for 13.63% of the area of the release layer before perforation.

[0108] The thickness of the tape 1 is 273 microns and the width is 19 mm.

[0109] The roll 1 is prepared as follows: by winding the tape 1 8018 times on a shaft with a diameter of 6 inches (i.e., a diameter of 15.24 cm and a circumference of 47.85 cm), with the substrate layer on the outside and the release layer on the inside.

[0110] Example 2: Tape 2 and Roll 2

[0111] The tape 2 sequentially includes the following structures:

[0112] 1) Substrate layer: a polyester fiber fabric with a thickness of 200 microns, a width of 19 mm, a density of 75 threads per square centimeter, and a tensile strength of 280 N / cm;

[0113] 2) Adhesive layer: a polyacrylate adhesive with a thickness of 50 microns and a width of 19 mm;

[0114] 3) Release layer: a glassine single-sided release paper (the dynamic friction coefficient of the non-release surface is 0.536 and the static friction coefficient is 0.578), with a thickness of 60 microns and a width of 19 mm. The perforated structure has the following characteristics: evenly distributed, strip-shaped, with a length of 95 mm and a width of 15 mm for each single strip, a density of 2 per meter, and the total area of the perforated structure accounts for 15% of the area of the release layer before perforation.

[0115] The thickness of the tape 2 is 310 microns and the width is 19 mm.

[0116] The roll 2 is prepared as follows: by winding the tape 2 7060 times on a shaft with a diameter of 6 inches, with the substrate layer on the outside and the release layer on the inside.

[0117] Example 3: Tape 3 and Roll 3

[0118] The tape 3 sequentially includes the following structures:

[0119] 1) Substrate layer: Polyester fiber fabric, with a thickness of 150 microns, a width of 19 mm, a density of 65 threads per square centimeter, and a tensile strength of 70 N / cm;

[0120] 2) Adhesive layer: Polyacrylate adhesive, with a thickness of 25 microns and a width of 19 mm;

[0121] 3) Release layer: PE release film, with a thickness of 25 microns and a width of 19 mm. The perforated structure has the following characteristics: evenly distributed, strip-shaped in shape, the length of a single strip is 266 mm, the width is 5 mm, the density is 1 strip per meter, and the total area of the perforated structure accounts for 7% of the area of the release layer before perforation.

[0122] The thickness of Tape 3 is 200 microns and the width is 19 mm.

[0123] Roll 3 is prepared as follows: obtained by winding Tape 3 8755 times on a shaft with a diameter of 6 inches, with the substrate layer on the outside and the release layer on the inside.

[0124] Comparative Example 1: Tape C1 (without release layer) and Roll C1

[0125] Same as Example 1, except that: Tape C1 has no release layer;

[0126] Roll C1 is prepared as follows: obtained by winding Tape C1 9266 times on a shaft with a diameter of 6 inches, with the substrate layer on the outside and the release layer on the inside.

[0127] Result: As shown in Table 1, Roll C1 has serious flying fiber problems, and with the extension of the aging time, the flying fiber situation becomes more serious.

[0128] In addition, Roll C1 has obvious glue overflow, and its lifespan is very short.

[0129] Comparative Example 2: Tape C2 and Roll C2

[0130] Same as Example 1, except that: the release layer has a thickness of 120 microns, a width of 35 mm, and no perforated structure;

[0131] Roll C2 is prepared as follows: obtained by winding Tape C2 5016 times on a shaft with a diameter of 6 inches, with the substrate layer on the outside and the release layer on the inside.

[0132] Conclusion: Using a release layer for the tape in Comparative Example 2 can avoid flying fibers, glue overflow, and lateral slippage, but it cannot prevent longitudinal slippage. At the same time, it is not conducive to improving production efficiency and reducing costs.

[0133] Specifically, in Comparative Example 2, the area of the release layer is twice that of the adhesive layer. The adhesive layer is located in the middle of the release layer. Through a special winding method, the upper adhesive strip presses the excess release layer at the edge of the lower adhesive strip, effectively avoiding the slippage between the adhesive strips. The width of the entire reel tape is 350 mm, the width of the paper tube shaft is 380 mm, and there is a 15-mm blank on both sides. During the vertical test, in less than 4 hours, the reel tape had slipped from the middle of the paper tube to the bottom of the paper tube, that is, the bottom distance was 0 cm and the top distance was 3 cm. This solution can effectively improve the problems of flying filaments and glue overflow. At the same time, there is no lateral slippage phenomenon, but the problem of longitudinal slippage is inevitable. At the same time, due to the area requirement of the release layer, the production capacity is halved, the release layer is excessively wasted, and the cost increases.

[0134] Comparative Example 3: Tape C3 and Coil C3

[0135] Same as Example 2, the difference is that: in Comparative Example 3, the release layer uses Graffix single-sided release paper (the dynamic friction coefficient of the non-release surface is 0.536, and the static friction coefficient is 0.578) (the area of the release layer is the same as that of the adhesive layer), with a thickness of 60 microns and a width of 19 mm, and there is no perforated structure.

[0136] Coil C3 is prepared as follows: It is obtained by winding Tape C3 7060 times on a shaft with a diameter of 6 inches. The base material layer is located on the outside and the release layer is located on the inside.

[0137] Result: Although the use of the release layer in Comparative Example 3 can avoid the problems of flying filaments and glue overflow, the friction coefficient of this release layer is relatively large, so the holding force on the base material layer cannot be improved, and the spool cloth-based tape still has a slippage problem.

[0138] The performances of the tapes and coils obtained in Examples 1-3 and Comparative Examples 1-3 are shown in Table 1.

[0139] Table 1

[0140]

[0141] Instructions:

[0142] 1. 0 roots, that is, no warp yarns of the base material layer fly out during the entire unwinding process.

[0143] 2. The longitudinal slippage distance is the maximum distance that the tape in the coil moves downward during the test.

[0144] 3. The lateral slippage distance is the maximum distance that the outermost tape of the coil slips during the test.

[0145] As can be seen from Table 1:

[0146] 1) Examples 1-3 combine the advantages of Comparative Examples 1-3, that is, the upper tape is adhered to the lower tape substrate layer through the holes using the adhesiveness of the original adhesive layer of the tape, effectively avoiding the problems of slippage and edge flying filaments, and achieving excellent performance of the spool cloth-based tape.

[0147] 2) Examples 1-3 reduce the peeling force of the adhesive layer of the upper tape on the substrate layer of the lower tape. Regardless of how the storage time and temperature of the tape change, it will not affect the material of the substrate layer, thereby affecting the problem of flying filaments caused by the loosening of the substrate layer structure.

[0148] All documents mentioned in the present invention are cited herein as references, as if each document was individually cited as a reference. In addition, it should be understood that after reading the above teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. A spool cloth-based tape, characterized in that, The tape sequentially includes the following structures: 1) A base material layer located at the bottom layer; 2) An adhesive layer located at the middle layer; and 3) A release layer located at the top layer; A perforation structure is provided on the release layer.

2. The spool base tape according to claim 1, wherein The material of the release layer is selected from the following group: PEK release paper, Glassine release paper, PET release film, PE release film, OPP release film, or a combination thereof.

3. The spool base tape according to claim 1, wherein, The thickness of the release layer is 2.5 microns - 260 microns.

4. The spool cloth-based tape according to claim 1, characterized in that, The length of the base material layer and the length of the adhesive layer are greater than or equal to the length of the release layer.

5. The spool cloth-based tape according to claim 1, wherein The width of the base material layer and the width of the adhesive layer are greater than or equal to the width of the release layer.

6. The spool base tape according to claim 1, characterized in that, On the release layer, the total area of the region of the perforation structure accounts for 3% - 95% of the total area of the release layer before perforation.

7. The spool base tape according to claim 1, characterized in that, The perforation structure is uniformly distributed or randomly distributed on the release layer.

8. The spool base tape according to claim 1, characterized in that, The shape of the perforation structure is selected from the following group: circular, oval, triangular, quadrilateral, polygonal, composite figure, strip-shaped.

9. The spool base tape according to claim 1, wherein The equivalent width of a single perforation structure is 10% - 90% of the width of the tape; and / or The equivalent diameter of a single perforation structure is 10% - 90% of the width of the tape.

10. The spool base tape according to claim 1, wherein The tape is in a roll form; The number of winding times of the tape is 30 times - 50000 times.

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