Baking varnish spraying high-temperature-resistant silica gel belt

Abstract

The utility model discloses a baking varnish spraying high-temperature-resistant silica gel belt, which relates to the technical field of adhesive tapes and comprises a pressure-sensitive colloid, a polyimide film is arranged at the lower end of the pressure-sensitive colloid, the lower end surface of the polyimide film is a non-corona surface, and a non-silicon release layer is coated on the non-corona surface of the polyimide film. The upper end of the polyimide film is provided with a silica gel primer, the silica gel primer is connected with the lower end of a pressure-sensitive colloid, and the edge of the upper end of the pressure-sensitive colloid is provided with an auxiliary sheet body; the high-temperature-resistant silica gel belt for shielding is sprayed on the automobile side plate through baking varnish. By arranging the silica gel primer, the non-silicon release layer and the auxiliary sheet body, the adhesive tape can not leave adhesive on the surface of vehicle paint under the condition of high temperature, and the adhesive tape can be conveniently torn off through the arc-shaped adhesive sheet.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of adhesive tape, specifically to a baking finish spraying high temperature resistant silica gel tape. BACKGROUND

[0002] In order to avoid spraying to the place that does not need to spray paint, the high temperature resistant silica gel tape is usually used when the automobile is baking finish spraying, and the silica gel tape is adhered to the edge of the paint range, so that the over-spraying can be avoided when spraying.

[0003] However, when the adhesive tape is torn off, the glue on the adhesive tape will remain on the vehicle body due to the high temperature of the baking room, and the glue removal work is very cumbersome, which not only reduces the spraying efficiency, but also damages the original paint. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model provides a baking finish spraying high temperature resistant silica gel tape, which solves the problems in the background art.

[0005] To achieve the above object, the utility model realizes the following technical scheme: a baking finish spraying high temperature resistant silica gel tape, comprising a pressure sensitive adhesive, the lower end of the pressure sensitive adhesive is provided with a polyimide film, the lower end face of the polyimide film is a non-corona surface, the non-corona surface of the polyimide film is coated with a non-silicon release layer, the upper end of the polyimide film is provided with a silica gel primer, the silica gel primer is connected with the lower end of the pressure sensitive adhesive, and the upper end edge of the pressure sensitive adhesive is provided with an auxiliary sheet.

[0006] Further, the auxiliary sheet comprises: an arc-shaped adhesive sheet, the lower end of the arc-shaped adhesive sheet is integrally formed with a connecting adhesive sheet, the connecting adhesive sheet is fixedly connected with the upper end of the pressure sensitive adhesive, the arc-shaped adhesive sheet is inwardly curved, and the end of the arc-shaped adhesive sheet is parallel to the end face of the pressure sensitive adhesive.

[0007] Further, the inner side end of the connecting adhesive sheet is provided with a first inclined surface, and the first inclined surface is tangent to the upper end face of the pressure sensitive adhesive.

[0008] Further, the outer side end of the connecting adhesive sheet is provided with a second inclined surface, the end of the second inclined surface is flush with the two side end faces of the pressure sensitive adhesive, the upper end of the second inclined surface is provided with a tear seam, the number of the tear seams is multiple, and the intervals are equal.

[0009] Further, the corona surface of the polyimide film is coated with active hydrogen polydimethylsiloxane.

[0010] The utility model provides a baking finish spraying high temperature resistant silica gel tape, which has the following advantages compared with the prior art:

[0011] The automobile side plate baking varnish spraying shielding high-temperature-resistant silica gel tape; by setting silica gel primer and non-silicon release layer and auxiliary sheet, the tape can not leave glue on the surface of the paint under high temperature, and the arc-shaped glue sheet can facilitate the tearing of the tape. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the overall structure schematic view of the present application;

[0013] Figure 2 It is Figure 1 It is the enlarged structure schematic view of A in the middle;

[0014] Figure 3 It is the plane schematic view of the pressure-sensitive adhesive and the polyimide film of the present application.

[0015] In the figure: 1, pressure-sensitive adhesive; 11, silica gel primer; 12, polyimide film; 13, non-silicon release layer; 2, auxiliary sheet; 21, arc-shaped glue sheet; 22, connecting glue sheet; 23, first inclined surface; 24, second inclined surface; 25, tearing seam. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0017] Please refer to Figures 1-3The utility model provides a technical scheme: a kind of baking finish spraying high-temperature-resistant silica gel tape, including pressure-sensitive adhesive 1, the lower end of pressure-sensitive adhesive 1 is provided with polyimide film 12, the lower end surface of polyimide film 12 is non-corona surface, non-silicon release layer 13 is coated on the non-corona surface of polyimide film 12, the upper end of polyimide film 12 is provided with silica gel primer 11, silica gel primer 11 is connected with the lower end of pressure-sensitive adhesive 1 and is arranged, the upper end edge of pressure-sensitive adhesive 1 is provided with auxiliary sheet body 2;Pressure-sensitive adhesive 1 and polyimide film 12 form adhesive tape, non-silicon release layer 13 is coated on the non-corona surface of polyimide film 12, non-silicon release layer 13 is non-silicon release agent, pressure-sensitive adhesive 1 and polyimide film 12 are solidified and rolled after high-temperature baking, high-adhesive layer is formed after high-temperature baking solidification between silica gel primer 11 and pressure-sensitive adhesive 1;Non-silicon release layer 13 is coated on the non-corona surface of polyimide film 12, when single-layer rolling is coated on adhesive tape, it is easy to roll and exhaust bubble, and when using unrolling, effectively reduce film unrolling force when tearing, facilitate manual operation;And through auxiliary sheet body 2, it is more convenient to pull apart a corner when tearing pressure-sensitive adhesive 1, and when the whole adhesive tape is adhered on vehicle body, better adhesion of the edge of pressure-sensitive adhesive 1 and vehicle body surface is realized by extruding auxiliary sheet body 2, to avoid leakage into the interior and affect the effect of paint spraying when paint spraying.

[0018] As Figure 2 shown, auxiliary sheet body 2 includes: arc-shaped adhesive sheet 21, the lower end of arc-shaped adhesive sheet 21 is integrally formed with connecting adhesive sheet 22, connecting adhesive sheet 22 is fixedly connected with the upper end of pressure-sensitive adhesive 1, arc-shaped adhesive sheet 21 is inwardly curved, and the end of arc-shaped adhesive sheet 21 is parallel with the end surface of pressure-sensitive adhesive 1;Arc-shaped adhesive sheet 21 and connecting adhesive sheet 22 are integrally formed, connecting adhesive sheet 22 is connected with the upper end of pressure-sensitive adhesive 1, arc-shaped adhesive sheet 21 is inwardly curved, so that when the adhesive tape is torn, the corner of the adhesive tape can be pulled up by the inwardly curved arc-shaped adhesive sheet 21, which facilitates the operation of the staff, and the end of arc-shaped adhesive sheet 21 is parallel with the end surface of pressure-sensitive adhesive 1, which facilitates the operator to pull up arc-shaped adhesive sheet 21.

[0019] As Figure 2 shown, the inner side end of connecting adhesive sheet 22 is provided with first inclined surface 23, and the first inclined surface 23 is tangent to the upper end surface of pressure-sensitive adhesive 1;Through first inclined surface 23, it can avoid that the edge of connecting adhesive sheet 22 is accidentally touched when pulling up arc-shaped adhesive sheet 21, and first inclined surface 23 is tangent to pressure-sensitive adhesive 1, which is convenient for operation.

[0020] As Figure 2As shown, the outer side end of the connecting film 22 is provided with a second inclined surface 24, the end of the second inclined surface 24 is flush with the two side end surfaces of the pressure-sensitive adhesive 1, and the upper end of the second inclined surface 24 is provided with a tear seam 25, the number of the tear seam 25 is multiple and the interval is equal, the second inclined surface 24 can also avoid the shielding effect of the spray painting on the edge, and the tear seam 25 is provided on the upper end of the second inclined surface 24, so that the film can be directly torn off when needed.

[0021] As shown in the drawings, Figure 3 As shown, the corona surface of the polyimide film 12 is coated with active hydrogen polydimethylsiloxane, and under the catalysis of platinum gold, a layer of bridging agent is quickly semi-cured at low temperature, which can effectively improve the adhesion between the pressure-sensitive adhesive 1 and the surface of the polyimide film 12, thereby avoiding the risk of film tearing and adhesive failure of the pressure-sensitive adhesive 1 after high-temperature use in the subsequent process.

[0022] Specifically: step 1: coat a non-silicon release layer 13 on the non-corona surface of the polyimide film 12, the composition of the non-silicon release layer 13 is artificial wax 100 parts, a mixed solvent of toluene and isopropyl alcohol 9000-10000 parts, heat and stir in a constant temperature water bath, then uniformly coat on the non-corona surface of the polyimide film 12, and then high-temperature baking and curing and winding;

[0023] Step 2: coat active hydrogen polydimethylsiloxane on the corona surface of the semi-finished polyimide film 12 coated in step 1, remove the solvent on the surface of the silicone primer 11 by low-temperature baking to form a bonding coating, and the coating thickness is 2-4um;

[0024] Step 3: coat the pressure-sensitive adhesive 1 on the surface of the silicone primer 11 coated in step 2, and then high-temperature baking and curing to form a high-adhesion layer.

[0025] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the present application, and any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present application are still within the scope of the present application.

Claims

1. A high-temperature resistant silicone tape for baking paint spraying, comprising a pressure-sensitive adhesive (1), a polyimide film (12) is arranged at the lower end of the pressure-sensitive adhesive (1), characterized in that, The lower end surface of the polyimide film (12) is a non-corona surface, the non-corona surface of the polyimide film (12) is coated with a non-silicon release layer (13), the upper end of the polyimide film (12) is provided with a silica gel primer (11), the silica gel primer (11) is connected and arranged at the lower end of the pressure-sensitive adhesive (1), and the upper end edge of the pressure-sensitive adhesive (1) is provided with an auxiliary sheet body (2).

2. The baking finish sprayable high temperature resistant silicone rubber belt according to claim 1, characterized in that, The auxiliary sheet body (2) comprises: An arc-shaped adhesive sheet (21), the lower end of the arc-shaped adhesive sheet (21) is integrally formed with a connecting adhesive sheet (22), the connecting adhesive sheet (22) is fixedly connected and arranged at the upper end of the pressure-sensitive adhesive (1), the arc-shaped adhesive sheet (21) is inwardly curved, and the end of the arc-shaped adhesive sheet (21) is arranged in parallel with the end surface of the pressure-sensitive adhesive (1).

3. The baking finish sprayable high temperature resistant silicone rubber belt according to claim 2, characterized in that, The inner side end of the connecting adhesive sheet (22) is provided with a first inclined surface (23), and the first inclined surface (23) is tangent to the upper end surface of the pressure-sensitive adhesive (1).

4. The baking finish sprayable high temperature resistant silicone rubber belt according to claim 2, wherein, The outer side end of the connecting adhesive sheet (22) is provided with a second inclined surface (24), the end of the second inclined surface (24) is flush with the two side end surfaces of the pressure-sensitive adhesive (1), and the upper end of the second inclined surface (24) is provided with a tear seam (25), the number of the tear seams (25) is multiple, and the intervals are equal.

5. The baking finish sprayable high temperature resistant silicone rubber belt according to claim 2, wherein, The corona surface of the polyimide film (12) is coated with active hydrogen polydimethylsiloxane.

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