Polylactic acid sheet material and production equipment thereof
A polylactic acid and polylactic acid resin technology, applied in the field of manufacturing and plasticizing molding materials, can solve the problems that polylactic acid sheets are not easy to form and process, and achieve the effect of excellent processing performance
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[0039] Figure 2 is a schematic view of the screw. Fig. 3 is a sectional view of Fig. 2B-B. As shown in Figures 2 and 3, the screw 11 is a barrier screw. In front of the thread of the barrier screw 11, that is, to the left of the thread in Figure 2, a barrier section 12 is provided. The center line of the barrier groove 13 and the screw The axis forms a certain angle. Between the barrier section 12 and the top of the screw, there are formed three radially parallel grooves 15 that are equidistantly recessed toward the center of the screw. The three convex rings 14 next to the grooves 15 are all 10 mm wide. The height of 5 mm, the convex ring 14 is formed with 12 uniformly distributed shallow grooves 14a recessed into the center of the convex ring on the outer peripheral surface. The center line of the shallow groove 14a forms a certain angle with the axis of the convex ring 14. The section of the shallow groove The shape is round, and the width and depth of the sh...
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