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    • 3. 发明授权
    • Microwave-activatable hot-melt adhesive
    • 微波激活热熔胶
    • US4906497A
    • 1990-03-06
    • US267048
    • 1988-11-04
    • Horst D. HellmannRoland Krieger
    • Horst D. HellmannRoland Krieger
    • C09J11/04C09J7/00H01B1/22H01B1/24
    • C09J7/00H01B1/22H01B1/24Y10S412/90Y10S428/913Y10T428/1338Y10T428/1355Y10T428/1372Y10T428/166Y10T428/167Y10T428/23921Y10T428/23993Y10T428/25Y10T428/256Y10T428/2826Y10T428/2878Y10T428/2887
    • A hot-melt adhesive comprising at least one component which under the action of microwaves on the dry hot-melt adhesive leads to an increased heating-up rate compared with a corresponding dry hot-melt adhesive without said component contains with a view to universal application with highest possible activatability and constant property characteristic as microwave-activatable component electrically conductive substances with an electrical conductivity higher than that of the dry hot-melt adhesive without said component. Provided as electrically conductive substances are in particular carbon fibres, carbon black, graphite, antistatic agents and metal particles, either on their own or in mixtures adapted to the use. Hot-melt adhesive coatings or self-supporting hot-melt adhesive films having these additives have a heating-up rate by microwaves which is greater by a factor of up to 400 than that of conventional microwave-activatable adhesives. This results in an appreciable reduction of the consumption of electrical energy when adhering by microwave activation or a corresponding increase in the laying capacity of the material to be stuck. The new hot-melt adhesive is suitable preferably for microwave-activated hot-melt adhering of sheet substrates, in particular floor coverings, and by rendering the activatability largely independent of the water content of usual adhesives also achieves the uniformity and reproduceability of the activation and melting-on behavior necessary for industrial uses and production.
    • 包含至少一种在干燥热熔粘合剂的作用下在微波作用下的组分的热熔粘合剂导致与没有所述组分的相应的干热熔粘合剂相比增加的升温速率包含为了普遍应用 具有最高可能的可激活性和恒定性能特征,作为导电性高于不含所述组分的干热熔粘合剂的电导率的微波可激发组分导电物质。 提供的导电物质特别是碳纤维,炭黑,石墨,抗静电剂和金属颗粒,其本身或适于使用的混合物。 具有这些添加剂的热熔粘合剂涂层或自支撑热熔粘合剂膜的微波加热速率比常规微波激活粘合剂高达400倍。 这导致当通过微波激活附着或相应地增加被卡住材料的敷设能力时,电能的消耗明显降低。 新的热熔粘合剂优选适用于片状基材,特别是地板覆盖物的微波激活热熔粘附,并且通过使得在很大程度上独立于通常粘合剂的水含量的活化性也实现了活化的均匀性和可再现性, 工业用途和生产所需的融化行为。