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Separator paper for alkaline-battery

A technology of alkaline batteries and separator paper, applied in the field of separator paper, can solve the problems of being unsuitable for high-power discharge, hindered ion diffusion, etc., and achieve the effects of enhancing liquid permeability, increasing absorption speed, and being beneficial to productivity.

Inactive Publication Date: 2005-02-02
NIPPON KODOSHI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tightness of the cellophane film is greater than 10,000 seconds / 100 ml, which is too large, so the diffusion of ions will be hindered, so the film is not suitable for high-power discharge

Method used

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  • Separator paper for alkaline-battery
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  • Separator paper for alkaline-battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0112] Embodiment 1: by figure 1 Double structure tight ply + liquid impregnated ply produced on cylinder paper machine shown.

[0113] For the compact layer, 63% by weight of mercerized hardwood pulp was beaten to up to 290ml CSF by a double disc refiner, mixed with 25% by weight of vinylon (fineness 0.5 denier x fiber length 2mm), and mixed with 12% by weight of Polyvinyl alcohol fibers (fineness 1 denier x fiber length 3mm) were mixed to provide furnish. In addition, for the liquid impermeable layer, 63% by weight of polynosic rayon (fineness 0.5 denier × fiber length 2mm), 25% by weight of vinylon (fineness 0.5 denier × fiber length 2mm) and 12% by weight By weight polyvinyl alcohol fibers (1 denier x 3 mm fiber length) were mixed together to provide the furnish. It should be noted that unbeaten polynosic rayon was used and had a CSF value of 740 ml. These raw materials are sent to two cylinder tanks respectively, and then laminated. During the papermaking process, th...

Embodiment approach 2

[0117] Embodiment 2 A triple structure of liquid impregnated layer+tight layer+liquid impregnated layer produced by the cylinder multilayer paper machine shown in the figure.

[0118] For the compact layer, 50% by weight of cotton linter pulp was beaten to up to 200ml CSF by double disc refiner, and mixed with 40% by weight of vinylon (0.5 denier x fiber length 2mm) and 10% by weight of polyvinyl alcohol fibers (fineness 1 denier x fiber length 3 mm) were mixed to provide a furnish. In addition, for the liquid impermeable layer, 60% by weight of common rayon (fineness 0.7 denier × fiber length 3mm), 28% by weight of vinylon (fineness 0.5 denier × fiber length 2mm) and 12% by weight poly Vinyl alcohol fibers (1 denier x 3 mm fiber length) were mixed together to provide the furnish. It should be noted that normal, unbeaten rayon was used and had a CSF value of 760 ml. These raw materials are sent to the three cylinders of the paper machine respectively, so that the figure 2 ...

Embodiment approach 3

[0121] Embodiment 3 consists of image 3 The two-layer compact layer + liquid impregnated layer produced by the cylinder wire-fourdrinier composite paper machine shown.

[0122] For the compact layer, solvent spun rayon (fineness 1.5 denier x fiber length 4mm): 70% by weight of Tencel (Tencel is a trade mark of Coutlouse Co., UK) was beaten to at most 10 ml CSF by a double disc mill and mixed with 25% by weight of vinylon (0.5 denier x fiber length 2 mm) was mixed with 5% by weight polyvinyl alcohol fibers (fineness 1 x fiber length 3 mm) to provide a furnish. In addition, for the liquid impermeable layer, 60% by weight of polynosic rayon (fineness 0.5 denier × fiber length 2mm), 25% by weight of vinylon (fineness 0.5 denier × fiber length 2mm) and 15% by weight By weight polyvinyl alcohol fibers (1 denier x 3 mm fiber length) were mixed together to provide the furnish. It should be noted that unbeaten polynosic rayon was used and had a CSF value of 740 ml. These raw materi...

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Abstract

A separator paper is provided which simultaneously satisfies the requirements to have a high denseness that can prevent internal shortage due to such as the deposition of the zinc oxide dendrite accompanied by not adding mercury, and a high liquid impregnate properties that can improve heavy discharging properties. Said separator paper comprises a dense layer having a certain degree of denseness, and a liquid impregnate layer having a certain degree of liquid impregnate properties, said dense layer and said liquid impregnate layer being integrally laminated, and said dense layer being made by mixing alkali proof cellulose fibers which is applicable for beating with synthetic fibers such that said alkali proof cellulose fibers be included in the range of 20 to 80 weight % with the beating degree of 500 ml to 0 ml at CSF value, and said liquid impregnate layer being made by mixing alkali proof cellulose fibers with synthetic fibers such that said alkali proof cellulose fibers be included in the range of 20 to 80 weight % with the beating degree of more than 700 ml at CSF value.

Description

field of invention [0001] The present invention relates to separator paper for use in separating anode active material and cathode active material in several types of alkaline batteries, each of which uses an alkaline electrolyte, such as alkaline manganese batteries, silver oxide batteries and air-zinc batteries; More specifically, it relates to a release paper having a high density capable of preventing internal short circuits caused by zinc oxide dendrites due to no addition of mercury, and which simultaneously has a greater Power discharge performance. Background technique [0002] The properties required for the separator paper used to separate the anode active material and the cathode active material of the alkaline battery are to prevent internal short circuit due to the contact of the anode active material with the cathode active material, and to have The desired durability arises from the fact that a depolarizer such as manganese dioxide does not cause shrinkage or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/26D21H11/12D21H11/18D21H13/08D21H13/14D21H13/16D21H13/26D21H27/38H01M6/06H01M50/414H01M50/429H01M50/457H01M50/489H01M50/494
CPCY02E60/12D21H13/14B32B5/26D21H13/16D21H11/12D21H27/38H01M2300/0014H01M2/162H01M2/1686D21H11/18D21H13/26D21H13/08Y02E60/10H01M50/44Y02P70/50H01M50/429H01M50/457H01M50/414H01M50/494H01M50/489H01M50/449H01M50/59H01M50/586H01M50/4295H01M6/06H01M10/28
Inventor 久保好世山野上基沟渊章夫
Owner NIPPON KODOSHI
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