Bending-resistant single-sided adhesive tape and preparation method thereof

A bending-resistant and adhesive tape technology, applied to adhesives, film/sheet adhesives, adhesive types, etc., can solve problems such as inability to fully rebound, improve experience comfort, facilitate operation, and simple process Effect

Pending Publication Date: 2022-04-29
潍坊同有新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a device that can enhance the stiffness of the hinge, improve the bending resilience of the hinge, prevent the hinge from being deformed and cannot fully rebound, and ensure that the two rigid screens of the folding screen electronic product can be fully unfolded. The preparation method of anti-bending single-sided adhesive tape, to solve the problems raised in the above-mentioned background technology

Method used

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  • Bending-resistant single-sided adhesive tape and preparation method thereof
  • Bending-resistant single-sided adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add TPEE elastomer Hytrel 3078 to the dryer of No. 1 extruder, the drying temperature is 110°C, and the drying time is 4h; then add MMA elastomer LA-2330 (acrylate block copolymer) to No. 2 extruder In the drying machine of the machine, the drying temperature is 90°C, and the drying time is 4h.

[0027] The temperature of the No. 1 extruder is 220°C, and the speed of the extruder is 120rpm; the temperature of the No. 2 extruder is 220°C, the speed of the extruder is 100rpm, and the temperature of the die is 230°C. 20µm TPEE film and 10µm MMA composite film.

[0028] After the composite film is extruded through the die, the TPEE film layer is cast on the OPP film, the MMA pressure-sensitive adhesive layer is laminated with the silicone release film (organic silicon OPP film) layer, and the bottom film layer-20μmTPEE is obtained after cooling and winding. -10µm MMA -Four layers of anti-bending single-sided adhesive tape with release film layer.

Embodiment 2

[0030] Add SEBS elastomer to the dryer of No. 1 extruder, the drying temperature is 110°C, and the drying time is 4h; then add MMA elastomer LA-2250 (acrylate block copolymer) to the dryer of No. 2 extruder In the dryer, the drying temperature is 90° C., and the drying time is 4 hours.

[0031] The temperature of the No. 1 extruder is 210°C, and the speed of the extruder is 100rpm; the temperature of the No. 2 extruder is 200°C, the speed of the extruder is 120rpm, and the temperature of the die head is 200°C. 20µm SEBS film and 15µm MMA composite film.

[0032] After the composite film is extruded through the die, the TPEE film layer is cast on the matte OPP film, the MMA pressure-sensitive adhesive layer is laminated with the silicone release film (organic silicon OPP film), and the bottom film layer is obtained after cooling and winding -20µmSEBS-15µmMMA -Four layers of anti-bending single-sided adhesive tape with release film layer.

Embodiment 3

[0034] Add TPEE elastomer Hytrel 3078 into the dryer of No. 1 extruder, the drying temperature is 110°C, and the drying time is 4h; then MMA elastomer LA-2330 (acrylic acid) mixed with terpene resin and antioxidant 264 Ester block copolymer) into the dryer of No. 2 extruder, the drying temperature is 90°C, and the drying time is 4h.

[0035] The temperature of the No. 1 extruder is 240°C, and the speed of the extruder is 150rpm; the temperature of the No. 2 extruder is 210°C, the speed of the extruder is 130rpm, and the temperature of the die head is 220°C. 20µm TPEE film and 20µm MMA composite film.

[0036] After the composite film is extruded through the die, the TPEE film layer is cast on the PE coated paper, the MMA pressure-sensitive adhesive layer is laminated with the silicone release film (organic silicon PET film), and the bottom film layer is obtained after cooling and winding. -20µmTPEE-20µmMMA -Four layers of anti-bending single-sided tape with release film layer...

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Abstract

The invention belongs to the technical field of electroacoustic materials, and particularly relates to a bending-resistant single-sided adhesive tape and a preparation method thereof, and the preparation method comprises the following steps: (1) drying raw materials; (2) preparing a composite membrane; and (3) preparing the bending-resistant single-sided adhesive tape. The bending-resistant single-sided adhesive tape sequentially comprises a release layer, a bending-resistant pressure-sensitive adhesive layer, a bending-resistant elastomer layer and a bottom film layer from top to bottom. The process is simple, the operation is convenient, the structure can be designed according to customer requirements, and bending-resistant single-sided adhesive tape products of different types, different thicknesses and different structures can be prepared; the prepared bending-resistant single-sided adhesive tape can support a hinge of a folding screen electronic product, the stiffness of the hinge part is enhanced, the bending resilience of the hinge is improved, and the situation that the hinge cannot be completely rebounded due to deformation caused by excessive bending of two rigid screens is avoided; meanwhile, it is guaranteed that the two rigid screens of the folding screen electronic product can be completely unfolded, and the experience comfort of a user for the folding screen electronic product is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of electroacoustic materials, and in particular relates to a bending-resistant single-sided adhesive tape and a preparation method thereof. Background technique [0002] With the development of science and technology, electronic products such as mobile phones and tablet computers with folding screens are becoming more and more popular. Folding screens can be bent or even twisted 360 degrees. The screens of folding screen electronic products need to meet 200,000 times of folding and still remain intact. [0003] Folding screen electronic products are composed of two or more rigid screens hinged through hinges, and the hinge must ensure that the distance extended in the unfolded state is just enough to fully unfold the two adjacent rigid screens. Since the thickness of the hinge is often inconsistent with the thickness of the rigid screen, if the width of the hinge is too large, the adjacent two rigid screens ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/29C09J7/38C09J7/40C09J133/12
CPCC09J7/29C09J7/385C09J7/40C09J2301/16C09J2301/302C09J2301/122C09J2203/326C09J2203/318C09J2453/006
Inventor 汪勇刘波郝峰李生平
Owner 潍坊同有新材料科技有限公司
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