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PRODUCT INTRODUCTION

产品简介

Aluminum Plastic Film

Aluminum-plastic film is the key material for the packaging of lithium battery cells in soft packaging. It is a high-plasticity, high-barrier multilayer composite material composed of a variety of plastics, aluminum foil and adhesives. The aluminum-plastic composite film for soft-pack lithium batteries has good barrier properties, electrolyte stability, cold stamping formability, puncture resistance, and insulation. It protects the contents and is the most critical one in soft-pack lithium batteries. The safety link is a composite material with extremely demanding technical requirements.

PRODUCT FEATURES

产品特点

01

Advantages of soft pack batteries

Category
Aluminum plastic film soft bagSteel shell, aluminum shell hard pack
Safety performance
Safer (when a safety problem occurs, the blast will crack)
Poor safety (easy to explode)
Intrinsic performance
Light weight (40% lighter than steel shell, 20% lighter than aluminum shell), small internal resistance, high energy density
Heavy weight, large internal resistance, low energy density
Service life
Longer cycle life (100 cycles attenuation is 4% -7% less than aluminum shell)
Short cycle life
Designability
The design is more flexible, the shape can be changed to any shape, and the design can be thinner
Square or cylindrical
Consistency
Product performance consistency is relatively poor (resolved by increasing the degree of production automation)
Relatively mature technology and good product consistency
Cost
High cost (solved by large-scale production)
Relatively low cost

02

Aluminum plastic film process advantages

Category
Dry method
Thermal method
Preparation
After bonding Al and CPP with adhesive, they are directly pressed together
MPP is used to connect Al and CPP, and then thermally synthesized under the condition of slow heating and green pressure, the production process is longer. And due to long-term high-temperature baking, ALF is embrittled, resulting in deterioration of drawing performance
Advantage
Deep drawing performance, short circuit resistance performance, appearance (less impurities, pinholes, fish eyes), good cutting performance, simple process
Certainly superior in electrolyte resistance and water resistance
Disadvantage
The resistance to electrolyte and water is not as good as thermal method, but the performance can be basically close to thermal method after process improvement
Poor deep drawing performance, poor short-circuit resistance, poor appearance, poor cutting performance
Application
Mobile phone batteries, smart wearable batteries, new energy vehicle batteries, high-rate batteries, high-capacity batteries
Used in batteries that do not require high capacity
PRODUCT MIX

产品结构

The structure of a typical aluminum plastic film is mainly: ON (surface layer) / Al (aluminum foil layer) / CPP (resin layer). Among them, the outermost layer is usually a nylon layer or a composite layer of PET and nylon, which mainly has the protective function of pollution prevention, corrosion resistance and external damage; the middle aluminum foil layer is the base material, which plays the role of waterproof, barrier and product shape molding; Propylene is the heat-sealing layer, the main function is to seal and bond, and to separate the aluminum layer from the battery core, to prevent the electrolyte leakage of the package and corrode the aluminum foil; the adhesive or adhesive resin composite layer mainly acts as a strong connection between the layers effect.

HG-113

HG-P115

HG-152

HG-P158

PRODUCT PERFORMANCE

基本性能

检测项目
Tested items
单位
Unit
HG-113
HG-P115
HG-152
HG-P158
目标值
Target value
实测值
 Measured value
目标值
Target value
实测值
 Measured value
目标值
Target value
实测值
 Measured value
目标值
Target value
实测值
 Measured value
厚    度 Thickness
μm
113±5
112
115±5
118
152±5
153
158±5
156
剥离强度(PET/ONY)
Laminate strength(PET/ONY)
N/15mm
_
_
≥3
不易剥离
_
_
≥3
不易剥离
剥离强度(ONY/AL)
Laminate strength(ONY/AL)
N/15mm
≥5
不易剥离
≥5
不易剥离
≥5
不易剥离
≥5
不易剥离
剥离强度(AL/CPP)
Laminate strength(AL/CPP)
N/15mm
≥8
12.5
≥8
12.6
≥12
25.6
≥12
24.7
热封强度
Heat seal strength
N/15mm
≥60
105
≥60
137
≥80
145.6
≥80
160.5
上下模185℃,0.3Mpa,3s
Upper and lower dies at 185℃,0.3Mpa,3s
抗拉强度
Tensile strength
MD
N/15mm
≥100
127
≥100
126
≥110
142
≥110
150
TD
N/15mm
137
130
149
157
断裂伸长率
Elongation at break
MD
%
≥70
147
≥70
119
≥80
198
≥80
186
TD
%
114
85
165
148
耐电解液性能(EC:DEC:DMC=1:1:1,LiPF6,1M+H2O1000ppm)85℃浸泡24h
Electrolyte resistance(EC:DEC:DMC=1:1:1,LiPF6,1M+H2O1000ppm),soaking at 85℃ for 24h
剥离强度(AL/CPP)
Laminate strength(AL/CPP)
N/15mm
≥6
11.8
≥6
10.7
≥10
18.5
≥10
19.1
热封强度
Heat seal strength
N/15mm
≥50
95
≥50
88
≥60
112
≥60
125
上下模185℃,0.3Mpa,3s
Upper and lower dies at 185℃,0.3Mpa,3s
ROHS检测
ROHS detection

合     格
Qualified
合     格
Qualified
合     格
Qualified
合     格
Qualified
外观:无针孔、异物、粘连、复合层间分层及损伤、晶点、气泡、皱褶等缺陷
Appearance :  No pinhole,impurity,adhesion,but with obvious delamination and scrtch,crystal spot,bubble,wrinkle and other defects between composite layers.
PERFORMANCE COMPARISON

性能对比

The company's products adopt the most advanced dry process of aluminum-plastic film in the world, and the deep-drawing performance of aluminum-plastic film far exceeds domestic similar products, and is basically close to the performance requirements of Japan's Showa. The electrolyte resistance performance of the dry process aluminum-plastic film is a weak point. Through technology absorption and innovation, product process optimization has significantly improved the electrolyte resistance of the aluminum-plastic film, and has basically reached the electrolyte resistance level of the international thermal process. .