公开(公告)号：US4600163A

公开(公告)日：1986-07-15

申请号：US448614

申请日：1982-12-10

申请人： John E. Hummel ,  William E. Baab

发明人： John E. Hummel ,  William E. Baab

IPC分类号： B65B67/08 ,  B65H23/06 ,  B65H75/18 ,  B25B33/00

CPC分类号： B65H23/06 ,  B65B67/085 ,  B65H75/185 ,  B65H2402/412 ,  B65H2701/5122

摘要： A hand grip member for insertion in the end of a tubular core for flexible rolled material such as plastic stretch film includes opposed handle portions projecting from one side of a support web which includes cylindrical bearing shoe segments projecting from the other side of the support web. The handle portions are spaced apart and may be squeezed to move toward each other thereby deflecting the web to cause the bearing shoes to expand radially into gripping engagement with the inner wall of the roll core to selectively control the drag on the roll as the material is unrolled in the stretch wrapping process. The hand grip members are preferably used in pairs and are preferably molded in one piece of a suitable elastic material such as nylon.

摘要翻译： 用于插入用于诸如塑料拉伸膜的柔性卷材的管状芯的端部中的手把构件包括从支撑腹板的一侧突出的相对的手柄部分，该支撑腹板包括从支撑腹板的另一侧突出的圆柱形轴承瓦段。 手柄部分间隔开并且可以被挤压以朝向彼此移动，从而使幅材偏转以使轴承鞋径向膨胀以与辊芯的内壁保持接合，以选择性地控制辊上的阻力，因为材料是 在拉伸包装过程中展开。 手握构件优选成对使用，并且优选地模制成一片合适的弹性材料，例如尼龙。

公开(公告)号：US4526565A

公开(公告)日：1985-07-02

申请号：US469028

申请日：1983-02-23

申请人： John E. Hummel ,  William E. Baab

发明人： John E. Hummel ,  William E. Baab

IPC分类号： B29C53/00 ,  B29C53/10 ,  B29C53/26 ,  B29C53/30 ,  B29C65/00 ,  B29C65/02 ,  B29C65/18 ,  B29C65/20 ,  B29C65/74 ,  B29C67/00 ,  B31B1/64 ,  B31B1/88 ,  B31B37/00 ,  B31B37/60 ,  B31B45/00 ,  B65D30/16 ,  B65D30/18 ,  B65D30/20 ,  B31B35/00

CPC分类号： B29C53/265 ,  B29C53/10 ,  B29C53/30 ,  B29C65/02 ,  B29C65/18 ,  B29C65/223 ,  B29C65/228 ,  B29C65/305 ,  B29C65/7433 ,  B29C65/7453 ,  B29C66/004 ,  B29C66/21 ,  B29C66/4312 ,  B29C66/438 ,  B29C66/80 ,  B29C66/81435 ,  B29C66/8322 ,  B29C66/83413 ,  B29C66/8432 ,  B29C67/0014 ,  B31B37/00 ,  B31B45/00 ,  B65D31/08 ,  B29C2793/0027 ,  B29C66/1122 ,  B29C66/431 ,  B29C66/4322 ,  B29C66/71 ,  B29L2023/001 ,  B29L2031/7128 ,  B31B2219/146 ,  B31B2219/23 ,  B31B2219/269 ,  B31B2219/6053 ,  B31B2219/6076 ,  B31B2237/20 ,  B31B2237/403 ,  B31B2237/60 ,  Y10S493/936

摘要： A flat bottom plastic film bag includes triangular gusset portions formed by a plurality of parallel heat welds which fuse portions of opposed pleats together and cooperate with a transverse central bottom seam to form a flat bottom bag from a seamed or seamless plastic film tube. The longitudinal side and end walls of the bag are provided with heat embossed corrugations which enhance the freestanding characteristics of the bag and a transverse crease is formed along the fold line between the sidewalls of the bag and the bottom wall to enhance the bottom forming characteristics of the bag when it is snapped from a folded position to an opened position. The bag may be made by an improved process wherein a blown film tube is continuously slit sealed into a plurality of tubes which are reinflated, then collapsed to form opposed double pleat folds, followed by corrugation of the side and end walls of the tube, formation of the transverse crease defining the fold line between the bottom and sidewalls and, finally, formation of the gusset welds, the transverse bottom seal and perforation or cutoff to form the individual bags.

摘要翻译： 平底塑料薄膜袋包括由多个平行的热焊缝形成的三角形角形部分，其将相对褶皱的部分融合在一起，并与横向中心底部接缝配合以从缝合的或无缝的塑料薄膜管形成平坦的底部袋。 袋的纵向侧壁和端壁设置有热压花纹，其增强袋的独立特性，并且沿着袋的侧壁和底壁之间的折叠线形成横向折痕，以增强底部成形特性 该袋当从折叠位置被卡扣到打开位置时。 该袋可以通过改进的方法制成，其中将吹塑薄膜管连续狭缝地密封成多个管，这些管被再膨胀，然后折叠形成相对的双褶皱褶皱，随后是管的侧壁和端壁的波纹形成 横向折痕限定了底部和侧壁之间的折叠线，最后形成角撑板焊缝，横向底部密封件和穿孔或切口以形成单独的袋子。