公开(公告)号：US3861976A

公开(公告)日：1975-01-21

申请号：US28921572

申请日：1972-09-15

Applicant: ALUMINUM CO OF AMERICA

Inventor： GAYNER HERBERT ,  SMITH DAVID A

IPC: B21D51/38 ,  B32B15/08 ,  B32B31/20

CPC classification number: B21D51/44 ,  B21D51/383 ,  B32B15/08 ,  B65D17/4012 ,  B65D17/404 ,  Y10T156/1064 ,  Y10T156/1082

Abstract: A method of fabricating a laminated metal container wall provided with an opening device including providing a metal sheet having a layer of protective material secured thereto by means of an adhesive selected from the group consisting of epoxy, polyester and polyurethane. The protective material is selected from a group consisting of a copolymer of a polyolefin and ethylene and ionomers of polyolefin. A preferred form of copolymer has polypropylene as the polyolefin employed with the ethylene. A preferred polypropylene ethylene copolymer may have an ethylene content of about 2 to 10%. The laminated metal sheet is scored to define a removable sector therein. The scoring is preferably effected to such a depth as to provide residual metal along the score line of about 2 to 6 mils. Simultaneously with the scoring operation, reducing the thickness of the layer of protective material without penetrating entirely through the layer. The protective layer may have an initial thickness of about 1.5 to 4 mils and preferably about 2.5 to 3.5 mils. A laminated metal container wall having a score line defined removable sector. An adhesive material secured to one surface of the container wall. A continuous layer of protective material secured to the metal panel portion by means of the adhesive. The protective layer may have a thickness of about 1.5 to 4 mils and is selected from a group consisting of a copolymer of a polyolefin and ethylene and ionomers of polyolefins.

Abstract translation: 一种制造层压金属容器壁的方法，其具有开口装置，其包括通过选自环氧树脂，聚酯和聚氨酯的粘合剂提供具有固定到其上的保护材料层的金属片。 保护材料选自聚烯烃和乙烯的共聚物和聚烯烃的离聚物组成的组。 共聚物的优选形式是聚丙烯作为与乙烯一起使用的聚烯烃。 优选的聚丙烯乙烯共聚物可以具有约2-10％的乙烯含量。 对层压的金属片进行刻痕以在其中限定可移除的扇区。 评分优选地进行到这样的深度，以便沿着刻痕线提供约2至6密耳的残余金属。 与评分操作同时，减少保护材料层的厚度，而不会完全穿过该层。 保护层可以具有约1.5至4密耳，优选约2.5至3.5密耳的初始厚度。

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。