公开(公告)号：US3632461A

公开(公告)日：1972-01-04

申请号：US3632461D

申请日：1969-05-16

Applicant: ALUMINUM CO OF AMERICA

Inventor： GAYNER HERBERT ,  DEMSEY JOHN N JR

IPC: B21D51/38 ,  B21D51/44 ,  B32B15/08 ,  B65D8/16 ,  B65D17/34 ,  B65D65/42 ,  B65D83/14 ,  B32B31/20

CPC classification number: B21D51/44 ,  B21D51/383 ,  B32B15/08 ,  B65D17/404 ,  Y10T156/1064 ,  Y10T428/15 ,  Y10T428/24612 ,  Y10T428/269

Abstract: A method of manufacturing a laminated metal container wall having an integral opening device. Providing a metal sheet, coating the sheet with an adhesive selected from the group consisting of epoxy, polyester and polyurethane and subsequently securing to the sheet by means of the adhesive a continuous layer of barrier material selected from the group consisting of lowdensity polyethylene, high-density polyethylene and cast polypropylene. Subsequently scoring said sheet to define a severable and/or removable sector and leaving residual metal along the score line of a thickness of about 0.002 to 0.006 inch. Effecting the scoring while preserving the integrity of the barrier by maintaining continuity of the layer of barrier material. Simultaneously with the scoring operation reducing the thickness of the barrier material in the regions underlying the scoring through compressibly established flow without penetrating entirely through the layer. This compressibly established flow serves to reduce the shear resistance to severance of the barrier when the laminated container wall is opened. An outer protective material selected from the group consisting of a polyester, polyvinylidene chloride, polyvinyl chloride and medium- or highdensity polyethylene may be continuously secured to the barrier material. A laminated metal container wall made by the above method having a barrier material thickness of about 0.002 to 0.003 inch in the portion not underlying the score line and a reduced thickness in the portion underlying the score line. The barrier material having a continuous panel covering structure. An outer protective material selected from the medium- consisting of a polyester, polyvinylidene chloride, polyvinyl chloride and medium- or highdensity polyethylene secured to the barrier material.

Abstract translation: 一种具有整体打开装置的层压金属容器壁的制造方法。 提供一种金属片材，用选自环氧树脂，聚酯和聚氨酯的粘合剂涂覆片材，然后通过粘合剂将粘合剂固定在片材上，连续的阻挡材料层选自低密度聚乙烯， 高密度聚乙烯和流延聚丙烯。 随后对所述片材进行刻痕以限定可分离和/或可移除的扇区，并沿着刻痕线留下残余金属，厚度为约0.002至0.006英寸。 通过保持屏障材料层的连续性来实现评分，同时保持屏障的完整性。 与评分操作同时，通过可压缩建立的流动而不渗透穿过该层，从而减小了评分下方区域中的阻隔材料的厚度。 这种可压缩建立的流动用于当打开层压的容器壁时降低对屏障切断的抗剪切性。 选自聚酯，聚偏二氯乙烯，聚氯乙烯和中密度或高密度聚乙烯的外部保护材料可以连续地固定在阻挡材料上。