THERMALLY RECOVERED ARTICLE, WIRE SPLICE AND WIRE HARNESS

• Main Authors: EMOTO YASUTAKA, YAMAZAKI SATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 11.05.2015
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; CONVEYING; ELECTRICITY; HANDLING THIN OR FILAMENTARY MATERIAL; INSULATORS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PACKING; PERFORMING OPERATIONS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; UNPACKING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PROBLEM TO BE SOLVED: To provide a thermally recovered article thermally shrunk in a suitable temperature range and also hard to be cracked, and a wire splice and a wire harness using the thermally recovered article.SOLUTION: Provided is a thermally recovered article, being a cylindrical thermally recovered article including a base material layer, in which the base material layer contains two or more kinds of polyolefin resins and a fire retardant, the base material layer has one melting point peak temperature, the melting point peak temperature is 112 to 128°C, and also, the fusion calorie is 60 to 85 J//g. It is preferable that the fusion calory on the whole of the resin component of the base material layer is 80 to 135 J/g. It is preferable that, in the polyolefin resin, the melting point peak temperature of at least one kind of the polyolefin resin is 112°C or higher, and the melting point peak temperature of at least the other one kind of polyolefin resin is below 112°C or the melting point peak temperature is not present. 【課題】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。【解決手段】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。上記ポリオレフィン系樹脂のうち、少なくとも１種のポリオレフィン系樹脂の融点ピーク温度が１１２℃以上であり、少なくとも他の１種のポリオレフィン系樹脂の融点ピーク温度が１１２℃未満であるか又は融点ピーク温度が存在しないとよい。【選択図】図１