| 摘要 |
In a molding machine (130), exemplified in FIG. 4, lateral and angled offsetting of a twin screw extruder (26) from a shooting pot assembly (24) permits shortening of a transfer channel (56). To additionally reduce shear effects arising from melt residence time a nozzle adaptor (52), the transfer channel (56) is located within a hollow cone (102) of a platen (90), the hollow cone (102) typically formed by an arch-shaped intermediate support structure (154) coupling together front (150) and rear (152) walls of the platen (90). To address bulk material removal brought about by the introduction of a barrel head, transfer channel (56) and extruder barrel tip within the hollow cone (102), reinforcement of an upper region of the rear wall (152) of the platen (90) is accomplished using a cross-member (160, 164 ). In an in-line compounding application, decreased lengths for the transfer channel (56) and nozzle adaptor (52) both reduce shear effects on the melt ( by decreasing melt residence time) and thus an increased average fibre length i n a molded part is achieved.
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