利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN1886243A 弹性带状材料及其制造方法和装置 无效 - 撤回

弹性带状材料及其制造方法和装置
摘要：
[问题]一种弹性带状材料，其具有适于用作密封或缓冲材料的多种形状中的任一种，并可以根据期望用途而具有任何期望的截面形状；以及可以以低成本有效地大规模制造所述材料的方法和装置。[解决问题的手段]该弹性带状材料是这样获得的，即，制备可热凝固的组合物，该组合物的主要组分是聚氨酯预聚合物和通过使固体聚胺减活而获得的潜凝固剂，使该组合物与加压气体混合从而获得混合组合物流体(a)，使该混合组合物流体(a)发泡，并将该泡沫加热到不低于临界凝固温度的温度，以使该泡沫凝固从而将其模制成具有期望截面形状的带状。所述方法包括通过树脂挤压机(1)挤压出混合组合物流体(a)以使其发泡，将该泡沫引入液体或气体加热区(2)中，在传送期间使该泡沫凝固并成形为任何期望的外部形状，然后将其从加热区(2)取出。
摘要（英）：

An elastic strip material which has any of various shapes suitable for use as sealing or cushioning materials and which can have any desired sectional shape according to the intended use; and a process and apparatus which can efficiently mass-produce the material at low cost. The elastic strip material is one obtained by preparing a heat-solidifiable composition comprising as major ingredients a polyurethane prepolymer and a latent solidifying agent obtained by deactivating a solid polyamine, mixing the composition with a gas with pressurizing to thereby obtain a mixture composition fluid (a), foaming the mixture composition fluid (a), and heating the foam to a temperature which is not lower than the critical solidification temperature to solidify the foam so as to mold it into a strip form having a desired sectional shape. The process comprises extruding the mixture composition fluid (a) with a resin extruder (1) to foam it, introducing the foam into a liquid or gaseous heating zone (2), solidifying and shaping the foam into any desired external shape during transfer, and then taking it out of the heating zone (2).

0/0