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    • 7. 发明申请
    • CONTINUOUS ROTARY THERMOFORMER
    • 连续旋转恒温器
    • WO01072500A1
    • 2001-10-04
    • PCT/US2000/023654
    • 2000-08-29
    • B29C51/22B29C51/42B29C71/00
    • B29C51/428B29C51/225B29C51/426B29K2067/00B29K2995/0041
    • An apparatus for thermoforming a thermoplastic article comprises an extrusion die for extruding a sheet of thermoplastic and a rotating wheel having at least one mold member. The mold member includes a male mold or forming cavity for receiving at least a portion of a substantially non-oriented (i.e., non-tensioned) thermoplastic sheet. The mold member is selectively heated and/or cooled during thermoforming to maintain the sheet in a molten or thermoformable state. The mold member also comprises a stripper plate maintained at a predetermined temperature or temperature distribution for inducing a predetermined degree of crystallinity to the sheet. The stripper plate enables the articles to be separated from the mold without distortion. In one embodiment, the thermoformed article has at least two and preferably at least three distinct regions of thermally-induced crystallinity.
    • 一种用于热成型热塑性制品的装置包括用于挤出热塑性塑料片的挤出模具和具有至少一个模具构件的旋转轮。 模具构件包括阳模或成形腔,用于容纳至少一部分基本上未定向(即未张紧)的热塑性片。 在热成型期间,模具构件被选择性地加热和/或冷却以将片材保持在熔融或可热成形状态。 模具构件还包括保持在预定温度或温度分布的剥离板,用于诱导片材的预定的结晶度。 脱模板使得物品能够与模具分离而不变形。 在一个实施方案中,热成型制品具有热诱导结晶度的至少两个且优选至少三个不同的区域。