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Packaging material and molded case

A packaging material, heat-resistant resin technology, used in transportation and packaging, battery box/sleeve materials, electronic equipment, etc., can solve problems such as insufficient adhesion, damage to uniform coloring, etc., to achieve excellent formability, good smoothness sexual effect

Inactive Publication Date: 2015-02-11
SHOWA DENKO PACKAGING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] That is, when the above-mentioned colored packaging material is molded into a container (casing) shape by deep drawing or bulge molding, there is a problem that the heat-resistant resin stretched film layer as the outer layer and the colored layer are closely spaced. Insufficient conformability, so the coloring layer peels off, the bottom layer (not black) is exposed and appears as an appearance, and the uniform coloring (black coloring, etc.) is impaired

Method used

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  • Packaging material and molded case
  • Packaging material and molded case
  • Packaging material and molded case

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] 50 parts by mass of carbon black with an average particle diameter of 0.8 μm, 5 parts by mass of ethylenediamine, and 45 parts by mass of polyester-based polyol (number average molecular weight: 2500) were blended to obtain a main ingredient. An ink composition was obtained by blending 3 parts by mass of toluene diisocyanate (TDI) as a curing agent with respect to 100 parts by mass of the above-mentioned main agent, and further blending 50 parts by mass of toluene.

[0125] The above-mentioned adhesive composition W was coated by a gravure roll coating method on a biaxially stretched nylon (6 nylon) film (resistant to Thermal resin stretch film layer, MD / TD=0.95) 2 side, after drying, place it in 40°C environment for 1 day, so as to carry out curing reaction, and form an easy-bonding layer 30, and its formation amount is 0.1g / m 2 .

[0126] Next, the above-mentioned ink composition was printed (coated) on the surface of the easily-adhesive layer 30 of the above-mention...

Embodiment 2

[0131] A biaxially stretched 6 nylon film (MD / TD=0.9) with a thickness of 15 μm and a shrinkage rate of 2.5% in hot water obtained by stretching by a simultaneous biaxial stretching method was used instead of a film with a thickness of 15 μm and a shrinkage rate of 4.0% in hot water. Biaxially stretched 6 nylon film (MD / TD = 0.95), except that, in the same manner as in Example 1, to obtain figure 1 Packing material 1 shown.

Embodiment 3

[0133] A biaxially stretched 6-nylon film (MD / TD=1.0) with a thickness of 15 μm and a hot water shrinkage rate of 3.5% obtained by stretching by a simultaneous biaxial stretching method was used instead of a film with a thickness of 15 μm and a hot water shrinkage rate of 4.0%. Biaxially stretched 6 nylon film (MD / TD = 0.95), except that, in the same manner as in Example 1, to obtain figure 1 Packing material 1 shown.

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Abstract

A packaging material 1 includes a heat resistant resin stretched film layer 2 as an outer layer, a thermoplastic resin layer 3 as an inner layer, a metal foil layer 4 arranged between these layers, and a colored ink layer 10 arranged between the metal foil layer 4 and the heat resistant resin stretched film layer 2. As the heat resistant resin stretched film, a heat resistant resin stretched film having a hot water shrinkage rate of 2% to 20% is used, and the heat resistant resin stretched film layer 2 and the colored ink layer 4 are integrally laminated via an easily adhesive layer 30. In this packaging material, at the time of forming and sealing, and even being used in a somewhat severe environment such as high-temperature and humid environment, the colored ink layer will not be detached from the heat resistant resin stretched film layer.

Description

technical field [0001] The present invention relates to a battery that can be suitably used as a casing for a notebook computer, a mobile phone, a vehicle, or a stationary secondary battery (lithium ion secondary battery), and is also suitable as a packaging material for food and pharmaceuticals. Packaging materials and molding shells used in packaging materials. Background technique [0002] Batteries such as lithium-ion secondary batteries are increasingly required to be colored in order to match the appearance and color of equipment such as electrical equipment to be loaded. In order to give a sense of massiness and luxury, the equipment is often made black, and in this case, the battery is also usually made black. In addition, coloring in other various colors is also increasing. [0003] In order to color the battery black, there are methods such as: coloring the resin layer used in the battery packaging material; providing a printing layer under the base resin layer, ...

Claims

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Application Information

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IPC IPC(8): B32B15/08H01M2/02H01M50/117H01M50/119H01M50/121H01M50/122H01M50/126H01M50/131
CPCH01M2/0287H01M2/026B29L2031/3468B29C51/08H01M2/0262B29C51/14B32B33/00B32B2457/10B32B37/12B32B2311/00B32B2307/402H01M50/117H01M50/131H01M50/122H01M50/119H01M50/126H01M50/121Y10T428/31678Y10T428/31522Y10T428/25Y10T428/269Y02E60/10H01M50/124H01M50/24
Inventor 南堀勇二王宏琳
Owner SHOWA DENKO PACKAGING CO LTD
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