会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Apparatus for the continuous extrusion of small cross-section
thermoplastic foam profiles
    • 用于连续挤出小横截面热塑性泡沫塑料型材的装置
    • US3966373A
    • 1976-06-29
    • US542973
    • 1975-01-22
    • Keith G. Johnson
    • Keith G. Johnson
    • B29C44/30B29G7/00
    • B29C44/30Y10S264/05
    • Thermoplastic polymers containing a blowing agent are extruded into an unconfined zone and allowed to partially expand. The polymers are then conveyed through a confined moving passage of predetermined configuration formed, for example, by intermeshing cooled rolls, to shape the extrudate to the predetermined configuration and solidify the surface layers. The extrudate is further cooled by subjecting alternate surfaces to cooled roll surfaces, whereby a continuous ribbon, or shaped extrudate, having a dense skin and a foamed core is formed. The method is particularly applicable to small cross-section profiles which can be cut into short lengths to be useful as ice-cream sticks or tongue depressors.
    • 将含有发泡剂的热塑性聚合物挤出到无约束区域并使其部分膨胀。 然后将聚合物通过例如通过相互啮合的冷却辊形成的预定构型的受限运动通道输送,以将挤出物成形为预定构型并固化表面层。 通过使替代的表面经受冷却的辊表面进一步冷却挤出物,由此形成具有致密表皮和泡沫芯的连续的带状或成形的挤出物。 该方法特别适用于可被切成较短长度以用作冰淇淋棒或舌抑制剂的小横截面轮廓。