THERMAL RECOVERY ARTICLE, WIRE SPLICE, AND WIRE HARNESS

• Main Authors: EMOTO, YASUTAKA, YAMASAKI, SATOSHI
• Format: Patent
• Language: English; French; Japanese
• Published: 14.05.2015
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; INSULATORS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

The objective of the present invention is to provide: a thermal recovery article that is difficult to split and that undergoes heat contraction within an appropriate temperature range; and a wire harness and wire splice that use the thermal recovery article. The cylindrical thermal recovery article is provided with a substrate layer, the substrate layer contains at least two types of polyolefin resin and a fire retardant, the substrate layer has one melting point peak temperature, the melting point peak temperature is 112-128°C inclusive, and the heat of fusion of the substrate layer is 60-85 J/g inclusive. The heat of fusion of the entirety of the resin components of the substrate layer may be 80-135 J/g inclusive. L'objectif de la présente invention est de fournir : un article de récupération thermique qui soit difficile à épisser et qui subisse une contraction thermique à l'intérieur d'une plage de températures appropriée ; et un harnais de câble et un raccord de câble qui utilisent l'article de récupération thermique. L'article cylindrique de récupération thermique est muni d'une couche formant substrat, la couche formant substrat contient au moins deux types de résine de polyoléfine et un agent ignifuge, la couche formant substrat présente une température pic de point de fusion, la température pic de point de fusion est de 112 à 128°C inclus, et la chaleur de fusion de la couche formant substrat est de 60 à 85 J/g inclus. La chaleur de fusion de l'entièreté des constituants résine de la couche formant substrat peut être de 80 à 135 J/g inclus. 本発明は、適当な温度範囲で熱収縮し、かつ裂け難い熱回復物品、この熱回復物品を使用したワイヤスプライス及びワイヤハーネスを提供することを目的とする。本発明に係る熱回復物品は、基材層を備える円筒状の熱回復物品であって、上記基材層が２種以上のポリオレフィン系樹脂と難燃剤とを含有し、上記基材層が１つの融点ピーク温度を有し、この融点ピーク温度が１１２℃以上１２８℃以下であり、かつこの基材層の融解熱量が６０Ｊ／ｇ以上８５Ｊ／ｇ以下である。上記基材層の樹脂成分全体の融解熱量が８０Ｊ／ｇ以上１３５Ｊ／ｇ以下であるとよい。