Heat shrinkable tubing
专利汇可以提供Heat shrinkable tubing专利检索，专利查询，专利分析的服务。并且PURPOSE: To provide a means for the complete gas-tight sealing of a connecting part of electrical cables, etc., by the use of a heat shrinkable tubing together with a polyamide-based adhesive, characterized in that the heat-shrinkage-initiating temperature of the tubing is lower than the softening point of the adhesive by a specific temperature.
CONSTITUTION: A heat shrinkable tubing is used in combination with a polyamide- based thermoplastic adhesive having a softening point of higher than the shrinkage initiation temperature of the tubing by 0W40°C. The soltening point is a temperature at which the viscosity of the adhesive shows abrupt decrease. For example, a polyamide-based adhesive having a softening point of 144°C measured by ASTM- D1238 (the viscosity of the adhesive decreases abruptly at about 150°C) is coated to the inner surface of a polyethylene tubing composed of a low density polyethylene having a density of 0.919 g/cm
3 measured by ASTM-D1505 and a melt index of 0.25g/10 min mesured by ASTM-D1238, and containing about 2.65% of cabon black (the shrinkage-initiating temperature of the tubing is about 110°C).
COPYRIGHT: (C)1979,JPO&Japio，下面是Heat shrinkable tubing专利的具体信息内容。
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