Hot melt adhesive tape for speaker mesh bonding and preparation method of hot melt adhesive tape

A technology of hot melt adhesive and horn mesh, which is applied in the direction of heat-activated film/sheet, film/sheet without carrier, pressure-sensitive film/sheet, etc. It can solve the problems of high cost, troublesome process, thick product, etc., and achieve thickness can be achieved. adjustment, simplification of process, and cost reduction

Inactive Publication Date: 2021-11-09
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

"Although this patent solves the problem of easy positioning and does not affect the original appearance of electronic products, it has the disadvantages of troublesome process, thicker product and higher cost.

Method used

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  • Hot melt adhesive tape for speaker mesh bonding and preparation method of hot melt adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 100 parts of water-based polyurethane heat-activated resin to 5 parts of blocked isocyanate curing agent, 3 parts of water-based black paste, and 2 parts of fumed silica matting powder, put them in a container, and after high-speed dispersion, filter to prepare Obtain thermosetting polyurethane glue;

[0027] (2) Coat the thermosetting polyurethane glue prepared above on the matte OPP film by knife-edge or CED coating methods. The thickness of the matte OPP film is 50µm, the coating thickness is 25µm, and the oven temperature is set at 60°C , 80°C, 100°C, 110°C, 110°C, 85°C, 60°C, the coating speed is 20m / min, after the drying is complete, it is rewound from the back to obtain a black matte thermosetting polyurethane layer (semi-finished product);

[0028] (3) Take 100 parts of high-viscosity acrylate pressure-sensitive adhesive glue, 2.5 parts of isocyanate curing agent, 3 parts of black paste, and 10-40 parts of solvent, put them in a container, disperse at hi...

Embodiment 2

[0031] (1) Add 100 parts of water-based polyurethane heat-activated resin to 5 parts of blocked isocyanate curing agent, 3 parts of water-based black paste, and 2 parts of fumed silica matting powder, put them in a container, and after high-speed dispersion, filter to prepare Obtain thermosetting polyurethane glue;

[0032] (2) Coat the thermosetting polyurethane glue prepared above on the matte CPP film by knife-edge or CED coating methods. The thickness of the matte CPP film is 50µm, the coating thickness is 45µm, and the oven temperature is set at 60°C , 80°C, 100°C, 110°C, 110°C, 85°C, 60°C, the coating speed is 10m / min, after the drying is complete, it is rewound from the back to obtain a black matte thermosetting polyurethane layer (semi-finished product);

[0033] (3) Take 100 parts of high-viscosity acrylate pressure-sensitive adhesive glue, 2.5 parts of isocyanate curing agent, 3 parts of black paste, and 10-40 parts of solvent, put them in a container, disperse at hi...

Embodiment 3

[0036] (1) Add 8 parts of blocked isocyanate curing agent, 3 parts of water-based black paste, and 2 parts of fumed silica matting powder to 100 parts of water-based polyurethane heat-activated resin, put them in a container, disperse at high speed, and filter to prepare Obtain thermosetting polyurethane glue;

[0037] (2) Coat the thermosetting polyurethane glue prepared above on the matte PP synthetic paper by knife edge or CED coating method. The thickness of the matte PP synthetic paper is 100µm, the coating thickness is 30µm, and the oven temperature is set 60°C, 80°C, 100°C, 110°C, 110°C, 85°C, 60°C, the coating speed is 14m / min, after drying completely, it is rewound from the back to obtain a black matte thermosetting polyurethane layer (semi-finished product) ;

[0038] (3) Take 100 parts of high-viscosity acrylate pressure-sensitive adhesive glue, 3.5 parts of isocyanate curing agent, 3 parts of black paste, and 10-40 parts of solvent, put them in a container, disper...

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Abstract

The invention belongs to the technical field of hot melt adhesive tapes, and particularly relates to a hot melt adhesive tape for speaker mesh bonding and a preparation method thereof, the hot melt adhesive tape comprises a release layer, a hot melt adhesive layer, a pressure-sensitive adhesive layer and a release film layer; the preparation method comprises the following steps: (1) preparing a semi-finished product; (2) preparing a hot melt adhesive tape; and (3) curing to obtain a finished product. The hot melt adhesive tape prepared through the method is soft in material, can be perfectly attached to any curved surface or special-shaped speaker mesh material, has an excellent extinction effect, does not affect the original attractiveness of an electronic product after being attached to the speaker mesh, adopts the hot melt adhesive film and the pressure-sensitive adhesive to be compounded, does not need to be additionally attached to other base materials, is adjustable in product thickness, the cost is reduced, and the process is simplified.

Description

technical field [0001] The invention belongs to the technical field of adhesive tapes, and in particular relates to a hot-melt adhesive tape for speaker mesh bonding and a preparation method thereof. Background technique [0002] Hot-melt tape for speaker nets is mainly used for speaker nets of various types and materials. There are special requirements for the appearance and functionality of the speaker nets. The hot-melt tape used to paste the speaker mesh must exert its excellent adhesive force after high-temperature hot pressing to make the speaker mesh with uneven and rough surfaces adhere firmly, and the speaker mesh and the hot-melt tape are hot-pressed After being firmly adhered, the glue surface should not be shiny, so as not to damage the overall beauty of the product and also cause visual disturbance to users when using electronic products. [0003] It is difficult for the existing hot-melt tapes for speaker nets to meet the above special requirements in terms of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10C09J7/35C09J7/38C09J7/40
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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