阅读说明：本技术 一种耐环测薄型化防水双面胶带的制备方法 (Preparation method of environment-proof thin waterproof double-sided adhesive tape ) 是由 刘杰 万中梁 李鑫 刘伟 廖继科 于 2020-07-27 设计创作，主要内容包括：本发明涉及双面胶带生产加工相关技术领域,具体公开了一种耐环测薄型化防水双面胶带的制备方法,包括以下步骤：用甲苯将溶剂型丙烯酸压敏胶固含量稀释到30％-40％,加入异氰酸酯固化剂并充分混合搅拌均匀,得到混合胶液,取双面离型纸,所述双面离型纸为本白双塑双硅离型纸,所述双面离型纸两面即第一离型面与第二离型面的离型力比例为1：1-1：5之间,将步骤1中所制得的所述混合胶液真空脱泡处理后,该耐环测薄型化防水双面胶带的制备方法,在保证所制得胶带的强度和防水等性能的同时减少了PET作为补强层这一机构,简化了生产工序,同时由于无需PET这一结构满足了电子产品轻薄化发展方向,且价格低廉,可以作为手机、IPAD边框的双面胶粘带使用。(The invention relates to the technical field related to production and processing of double-sided adhesive tapes, and particularly discloses a preparation method of a ring-testing-resistant thinned waterproof double-sided adhesive tape, which comprises the following steps: diluting the solid content of the solvent type acrylic pressure-sensitive adhesive to 30-40% by using toluene, adding an isocyanate curing agent, fully mixing and stirring uniformly to obtain a mixed glue solution, taking double-sided release paper, wherein the double-sided release paper is white double-plastic double-silicon release paper, and the release force ratio of a first release surface to a second release surface on two sides of the double-sided release paper is 1: 1-1: 5, after the mixed glue solution prepared in the step 1 is subjected to vacuum defoaming treatment, the preparation method of the ring-measurement-resistant thinned waterproof double-sided tape reduces a mechanism of taking PET as a reinforcing layer while ensuring the strength, the waterproof performance and the like of the prepared tape, simplifies the production process, meets the development direction of thinning electronic products due to the fact that the structure does not need the PET, is low in price, and can be used as a double-sided adhesive tape of a mobile phone and an IPAD frame.)

1. A preparation method of a thin waterproof double-sided tape with loop test resistance is characterized by comprising the following steps:

step 1: diluting the solid content of the solvent type acrylic pressure-sensitive adhesive to 30-40% by using toluene, adding an isocyanate curing agent, and fully mixing and stirring uniformly to obtain a mixed adhesive solution;

step 2: get two-sided from type paper, two-sided from type paper is white two moulds two silicon from type paper, two-sided from type paper two sides is that the first profile of leaving is 1 from the type force proportion that the profile is followed to the second: 1-1: 5, performing vacuum defoaming treatment on the mixed glue solution prepared in the step 1, aligning the mixed glue solution by using a 200-mesh filter screen for filtering, coating the filtered mixed glue solution on a first release surface of the release paper, and drying the release paper in an oven at 80-100 ℃ for 2-3 min at a speed of 10-20m/min to obtain a first pressure-sensitive glue layer;

and step 3: corona treatment is carried out on two sides of the foam base material, the first pressure-sensitive adhesive layer prepared in the step 2 is attached to the foam base material which is subjected to corona treatment, and a semi-finished product is obtained by rolling;

and 4, step 4: and (3) coating a second release surface of the release paper by the same method as the method in the step (2) to obtain a second pressure-sensitive adhesive layer, laminating the second pressure-sensitive adhesive layer and the semi-finished product prepared in the step (3), removing the release paper on the first pressure-sensitive adhesive layer, and rolling to obtain the ring-testing-resistant thinned waterproof double-sided adhesive tape.

2. The method for preparing the ring-proof thin waterproof double-sided tape according to claim 1, wherein the solvent used for the solvent-based acrylic pressure-sensitive adhesive is one or more of organic solvents of isopropanol, propylene glycol methyl ether, ethyl acetate, acetone, butanone, butyl acetate, toluene and xylene.

3. The preparation method of the ring-proof thin waterproof double-sided tape according to claim 1, wherein the foam base material is one of PU foam, PE foam and EVA foam, the thickness of the foam base material is 80-200 μm, and the foaming ratio of foam collection is 3-5 times.

4. The method for preparing the ring-test-resistant thinned waterproof double-sided tape as claimed in claim 1, wherein the thickness of the first pressure-sensitive adhesive layer and the thickness of the second pressure-sensitive adhesive layer are both 50 μm to 110 μm.

Technical Field

The invention relates to the technical field related to production and processing of double-sided adhesive tapes, in particular to a preparation method of a ring-test-resistant thinned waterproof double-sided adhesive tape.

Background

The double-sided adhesive tape is a roll-shaped adhesive tape which is prepared by taking paper, cloth and a plastic film as base materials and uniformly coating an elastomer type pressure-sensitive adhesive or a resin type pressure-sensitive adhesive on the base materials, and Chinese patent discloses a waterproof foam cotton double-sided adhesive tape (No. CN210215216U) and a waterproof foam cotton double-sided adhesive tape (No. CN106987217A), wherein the waterproof foam cotton double-sided adhesive tape and the waterproof foam cotton double-sided adhesive tape both have good waterproof performance and bonding strength, but the waterproof foam cotton double-sided adhesive tape and the waterproof foam cotton double-sided adhesive tape are complicated in manufacturing process and difficult to meet the design requirement of lightening and thinning of electronic products at the present stage because PET films are additionally.

Disclosure of Invention

In view of the defects in the prior art, the invention aims to provide a preparation method of a ring-detection-resistant thinned waterproof double-sided adhesive tape, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a preparation method of a thin waterproof double-sided tape with loop test resistance comprises the following steps:

step 1: diluting the solid content of the solvent type acrylic pressure-sensitive adhesive to 30-40% by using toluene, adding an isocyanate curing agent, and fully mixing and stirring uniformly to obtain a mixed adhesive solution;

step 2: get two-sided from type paper, two-sided from type paper is white two moulds two silicon from type paper, two-sided from type paper two sides is that the first profile of leaving is 1 from the type force proportion that the profile is followed to the second: 1-1: 5, performing vacuum defoaming treatment on the mixed glue solution prepared in the step 1, aligning the mixed glue solution by using a 200-mesh filter screen for filtering, coating the filtered mixed glue solution on a first release surface of the release paper, and drying the release paper in an oven at 80-100 ℃ for 2-3 min at a speed of 10-20m/min to obtain a first pressure-sensitive glue layer;

and step 3: corona treatment is carried out on two sides of the foam base material, the first pressure-sensitive adhesive layer prepared in the step 2 is attached to the foam base material which is subjected to corona treatment, and a semi-finished product is obtained by rolling;

and 4, step 4: and (3) coating a second release surface of the release paper by the same method as the method in the step (2) to obtain a second pressure-sensitive adhesive layer, laminating the second pressure-sensitive adhesive layer and the semi-finished product prepared in the step (3), removing the release paper on the first pressure-sensitive adhesive layer, and rolling to obtain the ring-testing-resistant thinned waterproof double-sided adhesive tape.

Preferably, the preparation method of the ring-proof thinned waterproof double-sided adhesive tape is characterized in that the solvent used by the solvent type acrylic pressure-sensitive adhesive is one or more of organic solvents of isopropanol, propylene glycol methyl ether, ethyl acetate, acetone, butanone, butyl acetate, toluene and xylene.

Preferably, the foam base material is one of PU foam, PE foam and EVA foam, the thickness of the foam base material is 80-200 μm, and the foaming ratio of foam collection is 3-5 times.

Preferably, the thickness of each of the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer is 50 μm to 110 μm.

Compared with the prior art, the invention has the beneficial effects that:

the preparation method of the ring-testing-resistant thinned waterproof double-sided tape ensures the strength, the waterproof performance and other performances of the prepared tape, reduces a mechanism of taking PET as a reinforcing layer, simplifies the production process, meets the development direction of lightening and thinning electronic products due to the fact that the structure does not need PET, is low in price, and can be used as a double-sided tape of a mobile phone and an IPAD frame.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the figure: 1. a release layer; 12. a first pressure-sensitive adhesive layer; 3. soaking a cotton layer; 4. and a second pressure sensitive adhesive layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described by taking four sets of fixed values as examples within the range of the preparation conditions illustrated in the drawings and the preparation schemes proposed in the schemes of the present invention and proposing two sets of comparative examples for analysis, and it is apparent that the described examples are only a part of the embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.