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Adhesive tape for batteries

A tape and battery technology, applied in the direction of secondary batteries, secondary battery manufacturing, non-aqueous electrolyte storage batteries, etc., can solve the problems of battery productivity reduction, poor insertion, etc., and achieve the effect of improving productivity

Active Publication Date: 2019-07-16
TERAOKA SEISAKUSHO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional adhesive tapes have poor insertion properties of battery parts, which may reduce battery productivity
Such a subject has not been studied in Patent Documents 1 and 2

Method used

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  • Adhesive tape for batteries
  • Adhesive tape for batteries
  • Adhesive tape for batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0059] The static friction coefficient and dynamic friction coefficient of a biaxially stretched polypropylene film with a thickness of 20 μm [Toray Co., Ltd., TORAYFAN (registered trademark)] (OPP film, before application of release agent) used as a substrate were measured by the following method As a result, the maximum value is 0.43.

[0060] (Determination of the maximum value of static friction coefficient and dynamic friction coefficient)

[0061] Measure the maximum value of static friction coefficient and dynamic friction coefficient according to JIS K7125. Specifically, using a friction coefficient measuring machine (manufactured by Toyo Seiki Seisakusho Co., Ltd.), the static friction coefficient and the coefficient of static friction were measured under the conditions of a weight of the sliding sheet of 200 g, a contact area of ​​6.3 m×6.3 m, and a stretching speed of 100 mm / min. For the coefficient of dynamic friction, set the highest value to the "maximum value".

[00...

Embodiment 7～8 and comparative example 1

[0066] As the mold release agent, a silicone mold release agent (manufactured by Shin-Etsu Chemical Co., Ltd., KS-847T) was used, and the dry coating amount was applied to the amount described in Table 2. Otherwise, the same as in Examples 1 to 6 In the same manner, a rubber-based adhesive tape and an acrylic adhesive tape were produced.

Embodiment 9～10 and comparative example 2～3

[0068] As the base material, a polyimide film with a thickness of 25μm [manufactured by Toray-DuPont Co., Ltd., KAPTON (registered trademark) 100H] (PI film, maximum friction coefficient = 1.45) is used, and the dry coating amount is Except for applying the long-chain alkyl-based release agent as the release agent in the amount described in Table 3, the same procedure as in Examples 1 to 6 was carried out to produce a rubber-based adhesive tape and an acrylic adhesive tape.

[0069]

[0070] As the mold release agent, a silicone mold release agent (manufactured by Shin-Etsu Chemical Co., Ltd., KS-847T) was used, and the dry coating amount was applied to the amount described in Table 4. Other than that, the same as in Examples 9 to 10 In the same manner, a rubber adhesive tape and an acrylic adhesive tape were produced.

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Abstract

Disclosed is an adhesive tape for batteries, the adhesive tape having a base material and an adhesive layer provided to one surface of the base material, wherein the adhesive tape for batteries, whichis capable of improving battery productivity by improving the insertability of battery components, is characterized in that a release agent is applied to the surface opposite the surface of the basematerial on which the adhesive layer is provided, and the maximum value of the static friction coefficient and dynamic friction coefficient according to JIS K7125:1999 of the surface to which the release agent is applied is 0.6 or lower.

Description

Technical field [0001] The present invention relates to an adhesive tape for batteries, and more specifically, to an adhesive tape for batteries that can improve the productivity of the battery by improving the insertability of battery components. Background technique [0002] Conventionally, in secondary batteries such as lead storage batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and lithium-ion batteries, adhesive tapes have been used for various purposes such as core fixation, insulation of electrode extraction ports, terminal fixation, and insulating spacers. The secondary battery is manufactured, for example, by using an adhesive tape to fix the components, inserting the electrode group into the battery case, and sealing the electrolyte. [0003] Patent Document 1 describes an adhesive tape for a secondary battery, which is characterized in that a polypropylene film substrate with a thickness of 30 to 300 μm is provided in the form of a layer with a thic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/20C09J109/00C09J133/00C09J183/04C09J201/00H01M10/04H01M10/058
CPCC09J2203/33C09J2400/226C09J2421/00C09J2433/00C09J2483/00C09J2483/005C09J109/00C09J133/00C09J183/04C09J201/00C09J7/201C09J2301/122H01M10/04Y02E60/10Y02P70/50C09J121/00C09J123/22C09J7/20C09J7/22C09J2301/312C09J2409/00C09J2423/106C09J7/243C09J7/383C09J7/385C09J7/401H01M10/049Y10T428/14
Inventor 枝广隆志
Owner TERAOKA SEISAKUSHO
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