Gummed paper

A technology of adhesive tape and adhesive layer, applied in the direction of sustainable manufacturing/processing, climate sustainability, non-aqueous electrolyte battery, etc. Meet the needs and other issues, achieve the effect of good adhesion strength and puncture strength, and improve the puncture strength

Inactive Publication Date: 2019-10-25
NINGDE AMPEREX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The adhesive paper in the cell assembly of the lithium-ion battery is mainly used to fix the current collector, cover the coating and protect the welding printing. The common adhesive paper is blue glue and green glue. Its structure includes a layer of base material and a layer of adhesive layer, the toner is dispersed in the adhesive layer, which usually leads to a decrease in the adhesive strength of the adhesive tape and cannot meet the use requirements
The base material provides protection performance, and the puncture strength of the adhesive tape is improved by increasing the thickness of the base material, but due to the requirement of battery energy density, the thickness of the adhesive tape is limited, and the puncture strength of the adhesive tape cannot meet the demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Corona treatment is performed on the first surface 11, the second surface 31, and the third surface 32, and the cobalt titanium green is uniformly dispersed in the first adhesive layer (acrylate), and then scraped by a doctor blade, uniformly Coated on the surface of the first substrate (polyethylene terephthalate PET), after passing through a tunnel furnace at 120°C for 2 minutes, rolling and compounding the second substrate (polyethylene terephthalate PET) ), the rolling pressure is 20kg. The second adhesive layer (acrylate) was coated on the surface of the second substrate by scraping with a doctor blade, passed through a tunnel oven at 120°C for 2 minutes, then rewound, and aged at 60°C for 2 hours. The first substrate, the first adhesive layer, the second substrate, and the second adhesive layer are combined to obtain an adhesive tape, wherein the thickness of the first substrate is 6um, the thickness of the first adhesive layer is 1.5um, and the second The thickne...

Embodiment 2

[0037] The preparation method is the same as in Example 1, except that the first surface 11, the second surface 31 and the third surface 32 are subjected to plasma treatment, and the first base material is polyimide (PI), wherein cobalt titanium green The content of a bonding layer is 20%, and the particle size is 1um.

Embodiment 3

[0039] The same preparation method as in Example 1, the first surface 11, the second surface 31 and the third surface 32 are subjected to plasma treatment, the difference is that the first substrate is biaxially oriented polypropylene (BOPP), wherein cobalt titanium green is The content in the first adhesive layer is 20%, and the particle size is 1um.

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Abstract

The invention discloses gummed paper, and the gummed paper comprises a first base material, a first bonding layer and a second bonding layer, wherein the first bonding layer comprises particles. The first bonding layer is arranged between the first base material and the second bonding layer, and the first bonding layer is in contact with the first base material. The gummed paper is of a multi-layer composite structure, the bonding strength of the gummed paper can be improved through the multi-layer composite structure, the gummed paper is not prone to falling off, and the puncture strength ofthe gummed paper is improved.

Description

technical field [0001] The present application relates to the field of batteries, in particular, to an adhesive tape and a lithium-ion battery. Background technique [0002] The adhesive paper in the cell assembly of the lithium-ion battery is mainly used to fix the current collector, cover the coating and protect the welding printing. The common adhesive paper is blue glue and green glue. Its structure includes a layer of base material and a layer of adhesive layer, the toner is dispersed in the adhesive layer, which usually leads to a decrease in the adhesive strength of the adhesive tape and cannot meet the needs of use. The base material provides protection performance, and the puncture strength of the adhesive paper is improved by increasing the thickness of the base material. However, due to the requirement of battery energy density, the thickness of the adhesive paper is limited, and the puncture strength of the adhesive paper cannot meet the demand. Therefore, under...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): H01M10/058
CPCH01M10/058Y02E60/10Y02P70/50
Inventor 黄智奇
Owner NINGDE AMPEREX TECH
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