A kind of detection method of aluminum-plastic film material
A detection method and technology of aluminum-plastic film, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of inconvenient production line rapid judgment, affecting product production efficiency, product performance not up to standard, etc., to shorten the test cycle, facilitate operation, reduce testing cost effect
Active Publication Date: 2018-10-19
LIYANG EXCELLENCE NEW MATERIAL TECH CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, there are mainly two different options for the selection of the bonding layer between the PP layer and the aluminum foil layer: one is to use polyurethane glue to bond the aluminum foil layer and PP layer; the other is to use modified polypropylene to bond the aluminum foil layer and PP layer , and the properties of these two materials are significantly different, and they have different directions in the use of lithium batteries. The mixed use of materials will lead to substandard performance of the product
The traditional method of distinguishing mainly adopts the performance comparison test and component analysis of aluminum-plastic film, which leads to a long test cycle, which is not convenient for the quick judgment of the production line, and affects the production efficiency of the product
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] Such as figure 1 As shown, the aluminum-plastic film 10 sequentially includes a PA layer 11 , a first adhesive layer 12 , an aluminum foil layer 13 , a second adhesive layer 14 and a PP layer 15 from outside to inside. At present, there are mainly two different options for the second adhesive layer 14: one is to use a polyurethane glue layer to bond the aluminum foil layer 13 and the PP layer 15; the other is to use a modified polypropylene layer to bond the aluminum foil layer 13 and the PP layer 15.
[0020] A kind of aluminum-plastic film material detection method, described method comprises the following steps:
[0021] Place the aluminum-plastic film to be tested with the side of the PP layer facing up on the test platform;
[0022] Use a polarizer to block vertically above the aluminum-plastic film to be tested, and rotate the polarizer at a constant speed of 30-120 R / min. The preferred rotation speed of the polarizer is 60 R / min. Observe the light changes on the...
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
Login to View More Abstract
The invention discloses an aluminum plastic film material test method. An aluminum plastic film comprises a PA layer, a first adhesive layer, an aluminum foil layer, a second adhesive layer and a PP layer sequentially from outside to inside. The method includes steps: horizontally putting a to-be-tested aluminum plastic film with the PP layer up on a test platform; perpendicularly arranging a polarizer above the to-be-tested aluminum plastic film, rotating the polarizer at a certain rotation speed, observing surface light ray changes of the polarizer, determining that the second adhesive layer is a modified polypropylene adhesive layer if the surface light ray changes of the polarizer are evident, and otherwise, determining that the second adhesive layer is a polyurethane glue layer. The aluminum plastic film material test method has advantages that aluminum plastic film material test period is greatly shortened, quick judgment of aluminum plastic film types is facilitated, product production efficiency is improved, mixed utilization of materials is avoided, and product quality is guaranteed; in addition, specific test analysis equipment is not needed in a test process, so that test cost is reduced, and economic benefits can be increased for enterprises beneficially.
Description
technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a method for detecting aluminum-plastic film materials. Background technique [0002] The function of the outer packaging material of the lithium-ion battery is to provide a closed space for containing the active material of the battery, and at the same time provide certain mechanical strength and mechanical protection. With the increasingly higher requirements for the weight volume density and capacity volume density of lithium-ion batteries, more and more lithium-ion batteries use aluminum-plastic packaging shells. Existing aluminum-plastic film products mainly include an aluminum foil layer located in the middle, a PA layer located outside the aluminum foil layer, and a PP layer located inside the aluminum foil layer. The PA layer and the PP layer are respectively connected to the aluminum foil layer through an adhesive layer. At present, there are mainly t...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/29
CPCG01N21/29
Inventor 张武林王晓明
Owner LIYANG EXCELLENCE NEW MATERIAL TECH CO LTD