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Product and method for wire seal

A technology for wire and tubular products, applied in the field of wire sealing, can solve problems such as being unsuitable for high temperature environment, slow down the manufacturing process, cost loss, etc., and achieve the effects of good installation time, slow installation time, and good high temperature resistance.

Active Publication Date: 2010-08-11
TYCO ELECTRONICS (UK) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesive in such spliced ​​glands typically overflows when operating at the rated temperature, making them unsuitable for use in high temperature environments
Alternatively, high temperature splice glands tend to be manufactured with adhesives that have a higher viscosity at the operating temperature, making them suitable for use in high temperature environments, but such adhesives slow down the rate at which the product is installed, thus Undesirably slows down the manufacturing process
Specifically, while the manufacturing process is only slowed by a few seconds by high-temperature rated spliced ​​glands, compared to those that are installed quickly, when doing large-scale manufacturing, such as in the automotive industry, the additional delay causes significant cost loss

Method used

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Examples

Experimental program
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Embodiment 1

[0038] An EVA adhesive comprising 92% EVA copolymer (28% vinyl acetate, MFI 500 dg / min), 5% tackifier and 3% antioxidant was employed. The adhesive has been used in quick shrink splice seal products and typically produces a splice seal in about 5 seconds. However, at temperatures of 120°C or higher, when the splice seal is suspended vertically, the adhesive flows and drips from the seal splice area, making it unsuitable for some European applications.

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Abstract

A heat-shrinkable tubular article for forming a wire splice comprising (i) a heat-shrinkable jacket material, and (ii) a thixotropic heat-flowable inner adhesive layer, the tubular article having at least one of a maximum internal diameter of no more than 15mm or a maximum length of no more than 100mm.

Description

technical field [0001] The present invention relates to methods and products for sealing electrical wires. [0002] Wire splicing is commonly used in electrical harnesses in the automotive industry. The invention is particularly advantageous in this application, but the invention may also find application in other applications where a sealed splice is required in a manufacturing environment. Background technique [0003] Dimensionally recoverable fittings are often used to protect spliced ​​wires in wiring harnesses in the automotive industry. One of the most common splice settings is "in-line splice". In serial splicing, each wire to be spliced ​​is stripped of the electrically insulating sheath, eg, at one end or at one or more other locations, to expose a bare conductive wire. The wires to be connected and all exposed bare wires are then arranged substantially parallel or overlapping each other as desired. Some other types of splices do not involve the removal of insu...

Claims

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Application Information

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IPC IPC(8): H01R4/72B29C61/02
CPCB29C61/0616H01R4/72B60R16/0207Y10T428/131Y10T428/1328
Inventor 菲利普·哈蒙德马丁·普里德尔贾尔斯·罗德韦
Owner TYCO ELECTRONICS (UK) LTD
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