Pouch film and manufacturing method therefor
A technology of polymer layer and gas barrier, which is applied in the direction of final product manufacturing, secondary battery manufacturing, chemical instruments and methods, etc., can solve the problems of gas barrier layer corrosion, easy penetration and damage of moisture and other foreign matter, and achieve water resistance and electrolyte resistance improvement effect
Active Publication Date: 2019-11-12
LG ENERGY SOLUTION LTD
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- Description
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- Application Information
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Problems solved by technology
However, since gaps are created between deposited metal particles, there is a problem of easy penetration of moisture and other foreign substances
In particular, there is a problem that the electrolyte injected into the bag penetrates between the metal particles causing corrosion and damage of the gas barrier layer
Method used
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manufacture example 1
[0096] An adhesive was applied to one surface of a surface protective layer made of polyethylene terephthalate (PET), and each had a thickness of 0.1 μm by depositing by using the plasma atomization method (Plasma Atomization Method). Aluminum (Al) metal particles up to 10 μm in diameter. Then, maintaining a temperature of 150° C. and a pressure of 200 MPa, the metal particles were sintered by using a pressure sintering method to form a gas barrier layer. Here, the thickness of the formed gas barrier layer was measured to be 10 μm. Then, an adhesive was applied on one surface of the gas barrier layer, and a sealant layer made of polypropylene (PP) was laminated to manufacture a pouch film.
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Abstract
In order to solve the purpose, a method for manufacturing a pouch film according to an embodiment of the present invention comprises the steps of: applying an adhesive to one surface of a first polymer layer; depositing metal particles on the applied adhesive; sintering the deposited metal particles by applying heat and pressure thereto to form a gas barrier layer; and stacking a second polymer onone surface of the gas barrier layer.
Description
technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of priority from Korean Patent Application No. 10-2018-0004212 filed on Jan. 12, 2018, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a bag film and a method of manufacturing the bag film, and more particularly, to a bag film in which the bag has excellent flexibility, water resistance, and electrolyte resistance and a method of manufacturing the bag film. Background technique [0004] Generally, secondary batteries include nickel-cadmium batteries, nickel-hydrogen batteries, lithium-ion batteries, and lithium-ion polymer batteries. This secondary battery is being applied and used in such as digital camera, P-DVD, MP3P, mobile phone, PDA, portable game device (Portable Game Device), electric tool (Power Tool), electric bicycle (E-bike) Small products, such as electric vehicles and hyb...
Claims
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IPC IPC(8): H01M2/02C23C24/08B32B7/12B32B27/06H01M50/119H01M50/121H01M50/129H01M50/131H01M50/55H01M50/557
CPCB32B7/12B32B27/06C23C24/087H01M10/0431C23C26/00C23C28/023Y02E60/10H01M50/557H01M50/124Y02P70/50H01M50/121H01M50/129H01M50/55H01M50/119H01M50/131C23C24/08B32B2307/7242B32B2457/10H01M50/105B32B2439/46
Inventor 黃隨枝金橡熏庾亨均崔龙洙金奈润姜旻亨金龙
Owner LG ENERGY SOLUTION LTD
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