B - Operations – Transporting – 29 – F
Patent
B - Operations, Transporting
29
F
18/708
B29F 1/00 (1980.01)
Patent
CA 1046719
METHOD AND APPARATUS FOR MAKING MOLDED ARTICLES OF EXPANDED CELLULAR MATERIAL AND PRODUCT THEREOF Abstract of the Disclosure Complemental male and female mold sections are supported in spaced relation to define a cavity that has a shape corres- ponding to the shape of the article to be molded, the mold sections being relatively movable away from one another to afford ejection of a completed article. A recess in the sur- face of at least one of the mold sections in a wall thereof generally parallel to the direction of the mold separation. An ejector bar sized to fit within the recess, the ejector bar having a surface discontinuity that is the mirror image of a surface discontinuity to be formed on the wall or the molded article. Means for roving the ejector bar along an oblique path after the mold sections are separated so that the ejector bar performs the dual function of separating the molded article from the mold section and effecting disengagement between the surface discontinuity on the ejector bar and its mirror image on the molded part. A product having surface discontinuities on the side walls thereof that is constructed in accordance with the method and apparatus. -1-
226744
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