| 摘要 |
The disclosure relates to an apparatus and method for manufacturing a molded article from plastic material feedstock in a continuous manner. The plastic material feedstock is confined between endless belts that define molded surfaces of the article to be molded. The apparatus 10 comprises a first continuous belt 20 having a first surface configured to define a first surface feature of the plastic article during moulding, said first continuous belt having a second surface opposite said first surface; a second continuous belt 22 having a first surface configured to define a second surface feature of the plastic article during molding, said second continuous belt having a second surface opposite said first surface. A heater 80 to heat at least one of said second surface of said first continuous belt, a cooler 84 configured to cool at least one of said second surface of said first continuous belt. The first continuous belt and said second continuous belt are disposed to cooperatively constrain plastic material therebetween. The apparatus may include a third continuous belt 24 and a fourth continuous belt to cooperate with said first and second continuous belts to constrain granular, powdered, or shredded plastic material therebetween, wherein the first, second, third and fourth continuous belts together form a tubular passageway having a four-sided polygonal cross section. The apparatus may include a force reacting structure comprising rollers 94 in contact with the second surface of said first belt to limit the displacement of said first belt toward said force reacting structure. |
