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    • 6. 发明授权
    • Method of producing self-supporting plastic bag
    • 生产自支撑塑料袋的方法
    • US4406646A
    • 1983-09-27
    • US241128
    • 1981-03-06
    • Hans G. Jentsch
    • Hans G. Jentsch
    • B65D30/16B31B3/00B31B29/60B65D30/18B31B29/00
    • B65D31/08B31B1/00Y10S493/936
    • A method of producing a synthetic foil flat-bottom bag capable of receiving liquid, fluid or pourable material and capable of standing up-right when filled, in which a bag closed at the bottom and open at the top is spread apart at opposite sides whereby at its bottom, a bottom surface with two outwardly pointed triangular tips is formed. The two tips are compressed flat with their two-foil walls and are folded downwardly by approximately 180.degree. about a fold line laterally spaced from the bottom of the bag, while the tip ends are placed against the underside of the bottom wall. Thereafter the two tip folds are crease-welded. The thus produced bag has a supporting surface which is enlarged by the welded multi-layer folds and is stabilized, and tightly sealed by the crease welds in the area of the tip. The folding of the tip is preferably effected by means of a form plate which has two parallel form edges extending beyond the bottom surface of the bag. Upon folding and prior to crease-welding of the tips the form plate is removed.
    • 一种能够接收液体,流体或可倾倒材料的合成箔平底袋的方法,其能够在填充时立即向右上方竖立,其中在底部封闭的袋子和在顶部开口的袋子在相对侧分开, 在其底部形成具有两个向外尖的三角形尖端的底面。 两个尖端与它们的双箔壁压扁,并围绕与袋底部横向隔开的折叠线向下折叠大约180度,同时顶端靠在底壁的下侧。 此后,两个尖端折痕被折痕焊接。 由此制造的袋具有通过焊接的多层折叠而增大并被稳定的支撑表面,并且通过尖端区域中的折痕紧密地密封。 尖端的折叠优选通过具有延伸超过袋的底表面的两个平行形状边缘的成形板来实现。 在折叠之前和在尖端的折痕焊接之前,去除模板。
    • 8. 发明授权
    • Apparatus for manufacturing a bag and delivering a bag in an open
configuration to a check-out counter
    • US4184413A
    • 1980-01-22
    • US910737
    • 1978-05-30
    • Marinus J. M. LangenEdgar H. Strauss
    • Marinus J. M. LangenEdgar H. Strauss
    • B31B29/60B31B3/28B31B37/00B65D30/00B31B29/02
    • B65D31/005Y10S493/936
    • A method and apparatus for manufacturing a square bottom bag is disclosed herein. The method comprises the steps of driving a web in a first direction and bending the web upon itself across its width as it is driven in the first direction to assume a U-shaped configuration, supporting the main panels of the web in the open U-shaped configuration and folding the side closure forming panels towards one another to an overlapping relationship and securing the side closure panels in the overlapping relationship to form side walls of a bag. The bag forming machine consists of a frame, a former mounted in the frame and a guide means for guiding an unwinding web around the former and drive means for driving the unwinding web around the former. Folding means is provided at opposite sides of the former for engaging the side wall forming portions of a web and folding them inwardly around the former to form closed side walls of a bag. Roll stock specifically designed for use in the method and apparatus is provided wherein a first pair and a second pair of bands of adhesive material of a type which is inactive to form a bond until placed in contact with an adhesive of the same type are applied to the inner and outer faces of the web adjacent said edges thereof. The bands of the first pair are laterally spaced with respect to the bands of the second pair so as to be out of alignment with one another in successive turns of the roll stock such that the successive turns are not adhesively secured to one another. An empty square bottom bag is provided which consists of a front wall, a back wall and a bottom wall formed from a unitary panel and including a band of adhesive on the outer face of said panel extending along the marginal edge portion of each side panel, the panels being folded inwardly so that the band of adhesive on one side panel is disposed at an interface with another side panel and therby secures the side wall panels with respect to one another in an overlapping relationship to close opposite sides of the bag and retain front, bottom and back walls in an open U-shaped configuration.
    • 10. 发明申请
    • ACCORDION-SIDES SQUARE-BOTTOM BAG AND MANUFACTURING METHOD THEREOF
    • ACCORDION-SIDES SQUARE-BOTTOM BAG及其制造方法
    • US20170057699A1
    • 2017-03-02
    • US15123246
    • 2015-02-28
    • Qilin LIN
    • Qilin LIN
    • B65D30/18B31B29/60B65D30/20
    • B65D31/08B31B70/60B31B2150/00B31B2160/20B65D31/10
    • An accordion-sides square-bottom bag and manufacturing method thereof, comprising a paper tube (10) made by a sheet enclosing the sides; accordion sides are folded on two sides of the paper tube (10); the paper tube is provided with a first indentation line (21) and a second indentation line (22), the distance from the second indentation line (22) to the base being greater than the distance between the first indentation line and the second indentation line, but not exceeding twice the distance; two ends of the second indentation line (22) are symmetrically provided with a first crease line (31) and a second crease line (32), the distances between the respective ends of the first and second crease lines and the two edges of the paper tube (10) exceeding the folded depth of the accordion sides; and a first cutting line (41) and a second cutting line (42) are provided from the ends of the first and second crease lines to the base of the paper tube (10). The accordion-sides square-bottom bag enlarges the area of the glued surface of the bottom of the bag, such that the material on the bottom is uniformly distributed, and the bottom is adhered firmly, thus reducing the maximum thickness of the bottom, and reducing the footprint of packaged material during transportation.
    • 一种手风琴侧方底袋及其制造方法,包括由包围所述侧面的片材制成的纸管(10) 手风琴侧折叠在纸管(10)的两侧; 纸管设置有第一压痕线(21)和第二压痕线(22),从第二压痕线(22)到基部的距离大于第一压痕线和第二压痕线之间的距离 ,但不超过距离的两倍; 第二压痕线(22)的两端对称设置有第一折痕线(31)和第二折缝线(32),第一和第二折痕线的各个端部与纸张的两个边缘之间的距离 管(10)超过手风琴侧的折叠深度; 并且从第一和第二折痕线的端部到纸管(10)的基部设置有第一切割线(41)和第二切割线(42)。 手风琴侧方底袋放大袋底部胶合表面的面积,底部材料均匀分布,底部牢固粘合,从而减小了底部的最大厚度, 减少运输过程中包装材料的占地面积。