| 摘要 |
<p>Thin-walled plastic products often have poor wall-strenght. The mold, method and product of the inventions herein provide as a remedy, reinforcing ribs (43) on the bottom and side walls of the product. Mold-parts (10, 11) provide mold cavity (14) therebetween primary flow channels (23) and secondary channels (27) provide increased bottom strength and wall strength by forming regions (25) of increased bottom thickness and ribs (43) which reinforce the side-wall (41).</p> |
