Environment-friendly aluminum plastic film for lithium battery

An aluminum-plastic film, lithium battery technology, applied in secondary batteries, battery pack parts, circuits, etc., can solve the problems of exhaust gas, waste water discharge, difficult operation, complex process, etc., to achieve simple production process and stable product performance. Effect

Inactive Publication Date: 2018-01-30
JIANGSU BEST RIEL PACKAGING MATERIALS CO LTD
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present in this new method uses strong acids or solvents like nitric acid for treating metals on their surface before applying them onto another material called PVOH. This results in better adhesion between layers made from different types of materials without damaging any surrounding areas. Additionally, there are no harmful substances involved when producing these films compared to existing techniques that require expensive equipment. Overall, this technology improves both safety and efficiency while reducing waste and impact on air quality and workers' health.

Problems solved by technology

The patented technique described in this patents solves two main issues: firstly it addresses the issue with traditional plastisol type packages made up mostly of polypropylene (PP) resin; secondly, while still being able to provide flexibility at least within certain limits due to its use in making thin films instead of thick ones. This allows for more efficient production processes without causing harmful pollution during manufacturing process.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Environment-friendly aluminum plastic film for lithium battery
  • Environment-friendly aluminum plastic film for lithium battery
  • Environment-friendly aluminum plastic film for lithium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A polyamide (PA) outer layer film (Cangzhou Mingzhu Company) with a thickness of 25 μm is produced by bidirectional stretching with a plastic extrusion salivating machine, and chemically modified polyvinyl alcohol with a thickness of 1 μm is coated on one side of a 40 μm aluminum foil with a coating machine (PVA) coating solution (Hebei Bairuier Company), on the other side of the aluminum foil coating thickness of 1 μm physically modified polyvinyl alcohol (PVA) coating solution (Hebei Bairuier Company), then the salivating polyamide ( PA) film, use a dry compound machine, use epoxy, phenolic resin adhesive, thickness 5μm (Jiangsu Bairuier Company) and aluminum foil coated with chemically modified polyvinyl alcohol (PVA) coating surface compound, the compounded semi-finished product is placed Put it into a curing chamber with a temperature set at 45°C for 48 hours.

[0021] Polypropylene (CPP) films with a thickness of 41 μm (Jiangsu Bairuier Co., Ltd.) were manufactured w

Embodiment 2

[0028] Manufacture polyester (PET) outer layer film (Jiangsu Shuangxing) with a thickness of 25 μm through two-way stretching with a plastic extrusion salivating machine, and use a coating machine to coat a chemically modified polyvinyl alcohol with a thickness of 1 μm on one side of an aluminum foil of 40 μm ( PVA) coating solution (Hebei Bairuier Company), on the other side of the aluminum foil coating thickness 1μm physical modification polyvinyl alcohol (PVA) coating solution (Hebei Bairuier Company), then pour the salivating polyester (PET ) film, use a dry compound machine, use epoxy, phenolic resin adhesive, thickness 5μm (Jiangsu Bairuier Company) and aluminum foil coated with chemically modified polyvinyl alcohol (PVA) coating surface compound, the compounded semi-finished product is put into Matured for 48 hours in a curing chamber set at 45°C.

[0029] A film with a thickness of 80 μm, which can be thermally bonded with polyvinyl alcohol (PVA) coating, is produced by a

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
Login to view more

PUM

PropertyMeasurementUnit
Total thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

Currently aluminum plastic film wrapping materials applied to soft-package lithium-ion batteries are mainly provided by Japan and generally adopts dry composition or extrusion composition. Mostly strong acid and the like needs to be used perform chemical treatment such as oxidization and passivation on a metal foil layer in the prior art, the chemical treatment process and a later washing processare complex in process and high in operation difficulty and generate a large amount of waste gas and wastewater which are extremely harmful to environments. The inventor of the invention researches and discovers that after the metal foil layer is coated with polyvinyl alcohol (PVA) modified coating liquid which has high barrier performance on various gas including steam and various organic solvents, a good protecting effect on the metal foil layer is achieved, and the adhering strength between the coated metal foil layer and the inner layer and the outer layer of the metal foil layer is also increased greatly. Due to the fact that polyvinyl alcohol (PVA) is an environment-friendly material, the whole coating process is free of pollution emission, simple in process and easy to operate.

Description

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
Login to view more

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
Owner JIANGSU BEST RIEL PACKAGING MATERIALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap