High-temperature-resistant baking varnish adhesive tape for metal baking varnish vehicle and preparation process thereof

Abstract

The invention discloses a high-temperature-resistant stoving varnish adhesive tape for a metal stoving varnish vehicle and a preparation process of the high-temperature-resistant stoving varnish adhesive tape, and relates to the technical field of stoving varnish adhesive tape. The high-temperature-resistant stoving varnish adhesive tape for the metal stoving varnish vehicle comprises a pressure-sensitive adhesive layer, a first heat insulation layer, a first thin film layer, a second heat insulation layer, a second thin film layer, a sponge block, a third thin film layer, a fourth thin film layer and adsorption holes in sequence from bottom to top; the first heat insulation layer is glued to the bottom of the first thin film layer in a gluing mode, the pressure-sensitive adhesive layer is arranged at the bottom of the first heat insulation layer, the second heat insulation layer is glued to the top of the first thin film layer in a hot-pressing mode, and the second thin film layer is glued to the top of the second heat insulation layer in a hot-pressing mode. The third thin film layer is glued to the top of the second thin film layer in a hot pressing mode. The heat insulation layer I and the heat insulation layer II are arranged in the adhesive tape, so that external heat can be effectively blocked, the film layer I is prevented from being heated by the external heat, and further, the wrapping of the pressure-sensitive adhesive layer caused by thermal expansion of the film layer I is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of baking varnish tapes, in particular to a high temperature resistant baking varnish tape for metal baking varnish vehicles and a preparation process thereof. Background Art

[0002] Car paint tape is a kind of tape that is affixed to the car body during painting to cover the parts that do not need to be painted. It can prevent paint from being sprayed on certain parts of the car body, ensure the rationality of the painted parts of the car body, and avoid excessive painting. The plastic film in the paint tape can increase the toughness of the tape, but the thermal expansion coefficients of the plastic film and the car body are different. When the car is painted, the temperature rises, which causes the expansion rate of the paint tape to be greater than the car body, resulting in bulging when the paint tape expands, causing the adhesion of the paint tape to the car body to deteriorate, making it easy to fall off.

[0003] The defects of existing paint tape are: 1. Prior art US20090117361A1 discloses a masking tape, which does not have a structure for insulating the base plastic film on the tape. The outside temperature is easily transferred to the plastic film on the tape through the air or the object to be adhered, thereby causing the plastic film to expand due to the heat, and further causing the tape to bulge due to the expansion, thereby causing the adhesion of the tape to deteriorate and easily fall off from the object to be adhered. Therefore, a high-temperature resistant paint tape for metal paint vehicles that can prevent the heat from the outside air or the object to be adhered from being transferred to the base plastic film on the tape is needed to solve this problem.

[0004] 2. The prior art US5867762A discloses a masking tape, which does not have the function of preventing the external hot air from transferring heat to the base plastic on the tape through the hot air when it flows rapidly. When heat insulating cotton is arranged on the tape for heat insulation, the external hot air can still exchange with the air in the heat insulating cotton when it flows rapidly, thereby transferring the heat of the hot air to the base plastic film in the tape. Therefore, a high-temperature resistant paint tape for metal paint vehicles is needed to solve this problem, which can prevent the external hot air from flowing rapidly and exchanging with the air in the heat insulating cotton.

[0005] 3. The prior art KR101791216B1 discloses a masking tape with improved peelability from an adherend. This technology does not have the function of reducing the influence of irregular impact of external water flow or paint on the adhesive layer of the tape. When the external paint or water flow impacts the tape irregularly, the impact force is easily transmitted directly to the adhesive portion between the tape and the automobile body, causing the adhesive portion to fall off under continuous impact. Therefore, a high-temperature resistant paint tape for metal paint vehicles is needed to solve this problem by buffering the irregular impact of external paint or water flow and reducing the influence of the impact on the adhesive layer of the tape.

[0006] 4. The prior art CN103338924B discloses a multi-layer masking tape, which does not have a structure for absorbing a small amount of paint sprayed on the tape. When a small amount of paint is sprayed on the tape, the paint is easy to slide from the tape onto the car body, thereby causing uneven paint spraying on the car body. Therefore, a high-temperature resistant paint tape for metal paint vehicles is needed to solve this problem, which can prevent the paint from sliding onto the car body when a small amount of paint is sprayed on the tape. Summary of the invention

[0007] One purpose of the present application is to provide a high temperature resistant paint tape for metal paint vehicles and a preparation process thereof, which can solve the technical problems raised in the prior art.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a high-temperature resistant baking paint tape for metal baking paint vehicles, the high-temperature resistant baking paint tape for metal baking paint vehicles comprising, from bottom to top, a pressure-sensitive adhesive layer, a thermal insulation layer one, a film layer one, a thermal insulation layer two, a film layer two, a sponge block, a film layer three, a film layer four and adsorption holes, the thermal insulation layer one is glued to the bottom of the film layer one by gluing, the pressure-sensitive adhesive layer is arranged at the bottom of the thermal insulation layer one, the thermal insulation layer two is glued to the top of the film layer one by hot pressing, the film layer two is glued to the top of the thermal insulation layer two by hot pressing, the film layer three is glued to the top of the film layer two by hot pressing, the sponge block is bonded and arranged in the gap between the film layer two and the film layer three by hot pressing, the film layer four is glued to the top of the film layer three by hot pressing, and the top of the film layer four is evenly spaced with adsorption holes.

[0009] Preferably, the pressure-sensitive adhesive layer comprises 60-100 parts of epoxy resin, 60-100 parts of low-density polyethylene and 2-5 parts of polymerization inhibitor in parts by weight.

[0010] Preferably, the heat insulating layer 1 is formed by a mixture of foam and wood chips, and the foam is one of polyurethane foam, polyester foam and polyethylene foam.

[0011] Preferably, the first film layer is made of a material selected from the group consisting of polyimide film, Teflon film, polyester film and polyvinyl chloride film.

[0012] Preferably, the second heat insulation layer is formed by a mixture of foam and wood chips, and the foam is one of polyurethane foam, polyester foam and polyethylene foam.

[0013] Preferably, the second film layer is made of one of a polyethylene film and a polyvinyl chloride film.

[0014] Preferably, the third material of the film layer is polyvinyl chloride film.

[0015] Preferably, the material of the film layer 4 is one of polyvinyl chloride film, polyimide film and polyester film.

[0016] Preferably, the preparation process of the high temperature resistant paint tape for metal paint vehicles comprises the following steps: S1, laying the foam on the substrate, and then evenly sprinkling the wood chips on the surface of the foam to form a heat insulation layer 1, and then bonding the film layer 1 to the top of the heat insulation layer 1 by hot pressing; S2, then lay new foam on the substrate again, and then sprinkle wood chips evenly on the upper surface of the foam to form a second insulation layer, and then bond the side of the film layer 1 in step S1 that is not bonded to the first insulation layer to the top of the second insulation layer by hot pressing, and then turn the film layer 1 over so that the second insulation layer faces upward; S3, subsequently bonding a portion of the edge region of the second film layer to the top edge region of the second thermal insulation layer by means of heat pressing, and then bonding a plurality of sponge blocks to the top of the second film layer at equal intervals by means of heat pressing; S4, then bonding the film layer 3 to the top of the film layer 2 by heat pressing, and placing the sponge block between the film layer 2 and the film layer 3; S5. Then, adsorption holes are pressed out at equal intervals on the top of the film layer 4 by hot pressing of a mold, and the bottom of the film layer 4 is bonded to the top of the film layer 3 by hot pressing.

[0017] Preferably, the step S5 further includes the following steps: S51, turning the thermal insulation layer 1 upward, and then evenly coating the pressure-sensitive adhesive on the top of the thermal insulation layer 1 to form a pressure-sensitive adhesive layer.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can effectively block external heat by arranging heat insulation layer 1 and heat insulation layer 2 in the adhesive tape, thereby preventing external heat from heating the film layer 1, thereby reducing bulging of the pressure-sensitive adhesive layer caused by thermal expansion of the film layer 1.

[0019] 2. The present invention can effectively reduce the hot air flow caused by the external hot air flow entering the thermal insulation layer 1 and the thermal insulation layer 2 to heat the film layer 1 through the wood chips in the thermal insulation layer 1 and the thermal insulation layer 2, and further avoid the pressure-sensitive adhesive layer from swelling due to the thermal expansion of the film layer 1.

[0020] 3. The present invention can buffer the small impact forces such as irregular airflow and water flow from the outside by setting the film layer three and the sponge block, reduce the impact of water flow and the like on the film layer one and the laminating adhesive layer, and thus reduce the shedding of the pressure-sensitive adhesive layer caused by the impact during painting.

[0021] 4. The present invention can adsorb a certain amount of paint sprayed on the surface of the film layer by setting the film layer four and the adsorption holes, thereby reducing the situation where the paint is easily dripped when sprayed on the tape, and further reducing the situation where the paint on the tape drips onto the car when the baking paint tape is used to stick on the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a front cross-sectional view of the present invention; Figure 3 It is a flow chart of the preparation process of the present invention.

[0023] In the figure: 1. Film layer one; 2. Heat insulation layer one; 3. Pressure-sensitive adhesive layer; 4. Heat insulation layer two; 5. Film layer two; 6. Film layer three; 7. Film layer four; 8. Adsorption holes; 9. Sponge block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1 , Figure 2 and Figure 3A high-temperature resistant paint tape for metal paint vehicles. The high-temperature resistant paint tape for metal paint vehicles includes, from bottom to top, a pressure-sensitive adhesive layer 3, a heat insulation layer 2, a film layer 1, a heat insulation layer 4, a film layer 2 5, a sponge block 9, a film layer 3 6, a film layer 4 7 and adsorption holes 8. The heat insulation layer 2 is glued to the bottom of the film layer 1 by gluing, the pressure-sensitive adhesive layer 3 is arranged at the bottom of the heat insulation layer 2, the heat insulation layer 4 is glued to the top of the film layer 1 by hot pressing, the film layer 2 5 is glued to the top of the heat insulation layer 4 by hot pressing, the film layer 3 6 is glued to the top of the film layer 2 5 by hot pressing, the sponge block 9 is bonded in the gap between the film layer 2 5 and the film layer 3 6 by hot pressing, the film layer 4 7 is glued to the top of the film layer 3 6 by hot pressing, and the top of the film layer 4 7 is evenly spaced with adsorption holes 8.

[0028] The pressure-sensitive adhesive layer 3 comprises 60-100 parts of epoxy resin, 60-100 parts of low-density polyethylene and 2-5 parts of polymerization inhibitor by weight.

[0029] The heat insulation layer 2 is made of a mixture of foam and wood chips, and the foam is one of polyurethane foam, polyester foam and polyethylene foam.

[0030] The material of the film layer 1 is one of polyimide film, Teflon film, polyester film and polyvinyl chloride film.

[0031] The heat insulation layer 2 4 is made of a mixture of foam and wood chips, and the foam is one of polyurethane foam, polyester foam and polyethylene foam.

[0032] The material of the film layer 2 5 is one of a polyethylene film and a polyvinyl chloride film.

[0033] The material of the film layer three 6 is polyvinyl chloride film.

[0034] The material of the film layer 47 is one of polyvinyl chloride film, polyimide film and polyester film.

[0035] The preparation process of high temperature resistant paint tape for metal paint vehicle includes the following steps: S1, laying the foam on the substrate, and then evenly sprinkling the wood chips on the surface of the foam to form a heat insulation layer 2, and then bonding the film layer 1 to the top of the heat insulation layer 2 by hot pressing; S2, then lay new foam on the substrate again, and then sprinkle wood chips evenly on the upper surface of the foam to form a heat insulation layer 2 4, then bond the side of the film layer 1 in step S1 that is not bonded with the heat insulation layer 2 to the top of the heat insulation layer 2 4 by hot pressing, and then turn the film layer 1 over so that the heat insulation layer 2 4 faces upward; S3, then bonding part of the edge area of ​​the second film layer 5 to the top edge area of ​​the second insulation layer 4 by hot pressing, and then bonding a plurality of sponge blocks 9 to the top of the second film layer 5 at equal intervals by hot pressing; S4, then bonding the film layer 3 6 to the top of the film layer 2 5 by hot pressing, and placing the sponge block 9 between the film layer 2 5 and the film layer 3 6; S5. Then, adsorption holes 8 are pressed out at equal intervals on the top of the film layer four 7 by hot pressing with a mold, and the bottom of the film layer four 7 is bonded to the top of the film layer three 6 by hot pressing.

[0036] S5 also includes the following steps: S51. Mix 60 parts of epoxy resin, 60 parts of low-density polyethylene and 3 parts of inhibitor at 130°C to form a pressure-sensitive adhesive, then turn the thermal insulation layer 2 upward, and then evenly apply the pressure-sensitive adhesive on the top of the thermal insulation layer 2 to form a pressure-sensitive adhesive layer 3. Example

[0037] 1. Spread the polyurethane foam on the substrate, and then evenly sprinkle the wood chips on the surface of the foam to form a heat insulation layer 2, and then bond the film layer 1 made of polyvinyl chloride to the top of the heat insulation layer 2 by hot pressing; 2. Then, new polyurethane foam is laid flat on the substrate again, and then wood chips are evenly sprinkled on the upper surface of the polyurethane foam to form a heat insulation layer 2 4. Then, the side of the film layer 1 in step S1 that is not bonded with the heat insulation layer 2 is bonded to the top of the heat insulation layer 2 4 by hot pressing, and then the film layer 1 is turned over so that the heat insulation layer 2 4 faces upward; 3. Then, the second film layer 5 made of polyvinyl chloride is bonded to the top of the second insulation layer 4 by hot pressing, and then a plurality of sponge blocks 9 are bonded to the top of the second film layer 5 at equal intervals by hot pressing; Fourth, the third film layer 6 made of polyvinyl chloride is then bonded to the top of the second film layer 5 by hot pressing, and the sponge block 9 is located between the second film layer 5 and the third film layer 6; 5. Then, adsorption holes 8 are pressed out at equal intervals on the top of the film layer 4 7 made of polyvinyl chloride by hot pressing with a mold, and the bottom of the film layer 4 7 is bonded to the top of the film layer 3 6 by hot pressing; 6. Mix 60 parts of epoxy resin, 60 parts of low-density polyethylene and 3 parts of inhibitor at 130° C. to form a pressure-sensitive adhesive, turn the thermal insulation layer 2 upward, and then evenly apply the pressure-sensitive adhesive on the top of the thermal insulation layer 2 to form a pressure-sensitive adhesive layer 3. Example

[0038] 1. Lay a film layer made of polyvinyl chloride on the substrate; 2. Then, new polyurethane foam is laid flat on the substrate again, and then wood chips are evenly sprinkled on the upper surface of the polyurethane foam to form a heat insulation layer 2 4. Then, the film layer 1 in step 1 is bonded to the top of the heat insulation layer 2 4 by hot pressing, and then the film layer 1 is turned over so that the heat insulation layer 2 4 faces upward; 3. Then, the second film layer 5 made of polyvinyl chloride is bonded to the top of the second insulation layer 4 by hot pressing, and then a plurality of sponge blocks 9 are bonded to the top of the second film layer 5 at equal intervals by hot pressing; Fourth, the third film layer 6 made of polyvinyl chloride is then bonded to the top of the second film layer 5 by hot pressing, and the sponge block 9 is located between the second film layer 5 and the third film layer 6; 5. Then, adsorption holes 8 are pressed out at equal intervals on the top of the film layer 4 7 made of polyvinyl chloride by hot pressing with a mold, and the bottom of the film layer 4 7 is bonded to the top of the film layer 3 6 by hot pressing; 6. Mix 60 parts of epoxy resin, 60 parts of low-density polyethylene and 3 parts of inhibitor at 130° C. to form a pressure-sensitive adhesive, turn the thermal insulation layer 2 upward, and then evenly apply the pressure-sensitive adhesive on the top of the thermal insulation layer 2 to form a pressure-sensitive adhesive layer 3. Example

[0039] 1. Spread the polyurethane foam on the substrate, and then evenly sprinkle the wood chips on the surface of the foam to form a heat insulation layer 2, and then bond the film layer 1 made of polyvinyl chloride to the top of the heat insulation layer 2 by hot pressing; Second, a second film layer 5 made of polyvinyl chloride is bonded to the top of the first film layer 1 by heat pressing, and then a plurality of sponge blocks 9 are bonded to the top of the second film layer 5 at equal intervals by heat pressing; 3. Then, the film layer 3 6 made of polyvinyl chloride is bonded to the top of the film layer 2 5 by hot pressing, and the sponge block 9 is located between the film layer 2 5 and the film layer 3 6; Fourth, adsorption holes 8 are then pressed out at equal intervals on the top of the film layer 4 7 made of polyvinyl chloride by hot pressing with a mold, and the bottom of the film layer 4 7 is bonded to the top of the film layer 3 6 by hot pressing; 5. Mix 60 parts of epoxy resin, 60 parts of low-density polyethylene and 3 parts of inhibitor at 130° C. to form a pressure-sensitive adhesive, turn the thermal insulation layer 2 upward, and then evenly apply the pressure-sensitive adhesive on the top of the thermal insulation layer 2 to form a pressure-sensitive adhesive layer 3. Example

[0040] 1. Spreading polyurethane foam on the substrate to form a heat insulation layer 2, and then bonding a film layer 1 made of polyvinyl chloride to the top of the heat insulation layer 2 by hot pressing; 2. Then, new polyurethane foam is laid flat on the substrate again to form the second heat insulation layer 4. Then, the side of the film layer 1 in step 1 that is not bonded with the second heat insulation layer 2 is bonded to the top of the second heat insulation layer 4 by hot pressing. Then, the film layer 1 is turned over so that the second heat insulation layer 4 faces upward. 3. Then, the second film layer 5 made of polyvinyl chloride is bonded to the top of the second insulation layer 4 by hot pressing, and then a plurality of sponge blocks 9 are bonded to the top of the second film layer 5 at equal intervals by hot pressing; Fourth, the third film layer 6 made of polyvinyl chloride is then bonded to the top of the second film layer 5 by hot pressing, and the sponge block 9 is located between the second film layer 5 and the third film layer 6; 5. Then, adsorption holes 8 are pressed out at equal intervals on the top of the film layer 4 7 made of polyvinyl chloride by hot pressing with a mold, and the bottom of the film layer 4 7 is bonded to the top of the film layer 3 6 by hot pressing; 6. Mix 60 parts of epoxy resin, 60 parts of low-density polyethylene and 3 parts of inhibitor at 130° C. to form a pressure-sensitive adhesive, turn the thermal insulation layer 2 upward, and then evenly apply the pressure-sensitive adhesive on the top of the thermal insulation layer 2 to form a pressure-sensitive adhesive layer 3. Example

[0041] 1. Spread the polyurethane foam on the substrate, and then evenly sprinkle the wood chips on the surface of the foam to form a heat insulation layer 2, and then bond the film layer 1 made of polyvinyl chloride to the top of the heat insulation layer 2 by hot pressing; 2. Then, new polyurethane foam is laid flat on the substrate again, and then wood chips are evenly sprinkled on the upper surface of the polyurethane foam to form a heat insulation layer 2 4. Then, the side of the film layer 1 in step 1 that is not bonded with the heat insulation layer 2 is bonded to the top of the heat insulation layer 2 4 by hot pressing, and then the film layer 1 is turned over so that the heat insulation layer 2 4 faces upward; 3. Then, the second film layer 5 made of polyvinyl chloride is bonded to the top of the second insulation layer 4 by hot pressing, and then a plurality of sponge blocks 9 are bonded to the top of the second film layer 5 at equal intervals by hot pressing; Fourth, adsorption holes 8 are then pressed out at equal intervals on the top of the film layer 4 7 made of polyvinyl chloride by hot pressing with a mold, and the bottom of the film layer 4 7 is bonded to the top of the film layer 2 5 by hot pressing; 5. Mix 60 parts of epoxy resin, 60 parts of low-density polyethylene and 3 parts of inhibitor at 130° C. to form a pressure-sensitive adhesive, turn the thermal insulation layer 2 upward, and then evenly apply the pressure-sensitive adhesive on the top of the thermal insulation layer 2 to form a pressure-sensitive adhesive layer 3. Example

[0042] 1. Spread the polyurethane foam on the substrate, and then evenly sprinkle the wood chips on the surface of the foam to form a heat insulation layer 2, and then bond the film layer 1 made of polyvinyl chloride to the top of the heat insulation layer 2 by hot pressing; 2. Then, new polyurethane foam is laid flat on the substrate again, and then wood chips are evenly sprinkled on the upper surface of the polyurethane foam to form a heat insulation layer 2 4. Then, the side of the film layer 1 in step S1 that is not bonded with the heat insulation layer 2 is bonded to the top of the heat insulation layer 2 4 by hot pressing, and then the film layer 1 is turned over so that the heat insulation layer 2 4 faces upward; 3. Then, the second film layer 5 made of polyvinyl chloride is bonded to the top of the second insulation layer 4 by hot pressing, and then a plurality of sponge blocks 9 are bonded to the top of the second film layer 5 at equal intervals by hot pressing; Fourth, the third film layer 6 made of polyvinyl chloride is then bonded to the top of the second film layer 5 by hot pressing, and the sponge block 9 is located between the second film layer 5 and the third film layer 6; 5. Then, adsorption holes 8 are pressed out at equal intervals on the top of the film layer 4 7 made of polyvinyl chloride by hot pressing with a mold, and the bottom of the film layer 4 7 is bonded to the top of the film layer 3 6 by hot pressing; 6. Mix 60 parts of epoxy resin, 60 parts of low-density polyethylene and 3 parts of inhibitor at 130° C. to form a pressure-sensitive adhesive, turn the thermal insulation layer 2 upward, and then evenly apply the pressure-sensitive adhesive on the top of the thermal insulation layer 2 to form a pressure-sensitive adhesive layer 3. Example

[0043] 1. Spread the polyurethane foam on the substrate, and then evenly sprinkle the wood chips on the surface of the foam to form a heat insulation layer 2, and then bond the film layer 1 made of polyvinyl chloride to the top of the heat insulation layer 2 by hot pressing; 2. Then, new polyurethane foam is laid flat on the substrate again, and then wood chips are evenly sprinkled on the upper surface of the polyurethane foam to form a heat insulation layer 2 4. Then, the side of the film layer 1 in step 1 that is not bonded with the heat insulation layer 2 is bonded to the top of the heat insulation layer 2 4 by hot pressing, and then the film layer 1 is turned over so that the heat insulation layer 2 4 faces upward; 3. Then, the second film layer 5 made of polyvinyl chloride is bonded to the top of the second insulation layer 4 by hot pressing, and then a plurality of sponge blocks 9 are bonded to the top of the second film layer 5 at equal intervals by hot pressing; Fourth, the third film layer 6 made of polyvinyl chloride is then bonded to the top of the second film layer 5 by hot pressing, and the sponge block 9 is located between the second film layer 5 and the third film layer 6; 5. Mix 60 parts of epoxy resin, 60 parts of low-density polyethylene and 3 parts of inhibitor at 130° C. to form a pressure-sensitive adhesive, turn the thermal insulation layer 2 upward, and then evenly apply the pressure-sensitive adhesive on the top of the thermal insulation layer 2 to form a pressure-sensitive adhesive layer 3.

[0044] Performance Test: 1. Heat resistance test: The products of each embodiment are pasted on the same steel plate at a certain angle at the same time, and then the products are baked at the same time using the same specification baking lamp. After 1 hour, observe whether the products pasted on the steel plate have blistering. Then spray the same amount of paint on the products of each embodiment to observe whether the paint on the products of each embodiment slides onto the steel plate; 2. Impact test: The products of various embodiments are horizontally pasted on the same steel plate at the same time, and then water is sprayed from a shower head of the same size on the products of various embodiments from the same height, and the spraying angle is adjusted back and forth. After 10 minutes, observe whether the products fall off; 3. Hot air test: The products of each embodiment are horizontally pasted on the same steel plate at the same time, and then the products are blown and baked at the same time using a hot air machine of the same specification. After 1 hour, observe whether the products pasted on the steel plate have blistering.

[0045] Test data of each embodiment under the same test conditions

[0046] It can be known from the experimental data that by arranging the thermal insulation layer 1 2 and the thermal insulation layer 2 4 in the tape, the external heat can be effectively blocked to prevent the external heat from heating the film layer 1, thereby reducing the bulging of the pressure-sensitive adhesive layer 3 caused by the thermal expansion of the film layer 1. At the same time, the wood chips in the thermal insulation layer 1 2 and the thermal insulation layer 2 4 can effectively reduce the hot air flow caused by the external hot air entering the thermal insulation layer 1 2 and the thermal insulation layer 2 4 to heat the film layer 1. The film layer 3 6 and the sponge block 9 can buffer the small impact forces such as irregular airflow and water flow from the outside, reduce the impact of water flow on the film layer 1 and the pressure-sensitive adhesive layer 3, thereby reducing the shedding of the pressure-sensitive adhesive layer 3 caused by the impact during paint spraying. The film layer 4 7 and the adsorption holes 8 can adsorb a certain amount of paint sprayed on the surface of the film layer 7, thereby reducing the easy dripping of the paint when sprayed on the tape.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference signs in the claims should not be regarded as limiting the rights involved.

Claims

1. A high temperature resistant paint tape for metal paint vehicles, characterized by: The high temperature resistant paint tape for metal paint vehicles comprises, from bottom to top, a pressure sensitive adhesive layer (3), a heat insulation layer 1 (2), a film layer 1 (1), a heat insulation layer 2 (4), a film layer 2 (5), a sponge block (9), a film layer 3 (6), a film layer 4 (7) and adsorption holes (8), wherein the heat insulation layer 1 (2) is glued to the bottom of the film layer 1 (1) by gluing, the pressure sensitive adhesive layer (3) is arranged on the bottom of the heat insulation layer 1 (2), and the heat insulation layer 2 (4) is glued to the bottom of the film layer 1 (1) by hot pressing. The film layer (5) is bonded to the top of the film layer (1), the film layer (5) is bonded to the top of the thermal insulation layer (4) by hot pressing, the film layer (6) is bonded to the top of the film layer (5) by hot pressing, the sponge block (9) is bonded and arranged in the gap between the film layer (5) and the film layer (6) by hot pressing, the film layer (4) is bonded to the top of the film layer (3) by hot pressing, and the top of the film layer (4) is provided with adsorption holes (8) at equal intervals.

2. The high temperature resistant paint tape for metal paint vehicles according to claim 1, characterized in that: The pressure-sensitive adhesive layer (3) comprises 60-100 parts by weight of epoxy resin, 60-100 parts by weight of low-density polyethylene and 2-5 parts by weight of polymerization inhibitor.

3. The high temperature resistant paint tape for metal paint vehicles according to claim 1, characterized in that: The thermal insulation layer 1 (2) is made of a mixture of foam and wood chips, and the foam is one of polyurethane foam, polyester foam and polyethylene foam.

4. The high temperature resistant paint tape for metal paint vehicles according to claim 1, characterized in that: The material of the film layer 1 (1) is one of polyimide film, Teflon film, polyester film and polyvinyl chloride film.

5. The high temperature resistant paint tape for metal paint vehicles according to claim 1, characterized in that: The second heat insulation layer (4) is made of a mixture of foam and wood chips, and the foam is one of polyurethane foam, polyester foam and polyethylene foam.

6. A high temperature resistant paint tape for metal paint vehicles according to any one of claims 1 to 5, characterized in that: The material of the second film layer (5) is one of a polyethylene film and a polyvinyl chloride film.

7. The high temperature resistant paint tape for metal paint vehicles according to claim 1, characterized in that: The material of the film layer three (6) is polyvinyl chloride film.

8. The high temperature resistant paint tape for metal paint vehicles according to claim 1, characterized in that: The material of the film layer four (7) is one of polyvinyl chloride film, polyimide film and polyester film.

9. A process for preparing a high temperature resistant paint tape for metal paint vehicles according to any one of claims 1 to 8, characterized in that: The preparation process of the high temperature resistant paint tape for metal paint vehicle comprises the following steps: S1, laying the foam flat on the substrate, then evenly sprinkling wood chips on the surface of the foam to form a heat insulation layer 1 (2), and then bonding the film layer 1 (1) to the top of the heat insulation layer 1 (2) by hot pressing; S2, then lay new foam on the substrate again, and then evenly sprinkle wood chips on the upper surface of the foam to form the second insulation layer (4), and then bond the side of the film layer (1) in step S1 that is not bonded to the first insulation layer (2) to the top of the second insulation layer (4) by hot pressing, and then turn the film layer (1) over so that the second insulation layer (4) faces upward; S3, subsequently bonding a portion of the edge region of the second film layer (5) to the top edge region of the second thermal insulation layer (4) by means of heat pressing, and then bonding a plurality of sponge blocks (9) at equal intervals to the top of the second film layer (5) by means of heat pressing; S4, then bonding the third film layer (6) to the top of the second film layer (5) by heat pressing, and placing the sponge block (9) between the second film layer (5) and the third film layer (6); S5. Then, adsorption holes (8) are pressed out at equal intervals on the top of the fourth film layer (7) by hot pressing with a mold, and the bottom of the fourth film layer (7) is bonded to the top of the third film layer (6) by hot pressing.

10. The preparation process of the high temperature resistant paint tape for metal paint vehicles according to claim 9, characterized in that: The step S5 also includes the following steps: S51, turning the heat insulation layer 1 (2) upward, and then evenly coating the pressure-sensitive adhesive on the top of the heat insulation layer 1 (2) to form a pressure-sensitive adhesive layer (3).

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