| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Bag and method of making the same | US160967 | 1998-09-25 | US6090028A | 2000-07-18 | Gilbert N. Yannuzzi, Jr. |
| A bag suitable for use in microwave cooking is constructed of an elongated tube of flexible material closed at one end by means of a cold seal closure and having a heat seal adhesive deposit applied to the other end thereof for use in closing the bag after filling thereof; and methods of making the same are described, including the making of a roll from which said bags can be made. | ||||||
| 142 | Thermoplastic bag structure | US918555 | 1997-08-22 | US5967663A | 1999-10-19 | Edward A. Vaquero; William P. Belias |
| A thermoplastic bag structure and method for making and packaging thermoplastic bags such that their tops are easily identified and the bags are easily opened. The method for producing these bags begins with cutting a flattened thermoplastic tube into two portions. At least one of the two portions is then collapsed to form a sheet of material having a pair of thermoplastic layers, a straight folded bottom edge and a pair of top edges, at least one of which has a skewed-cut. Bag side structures are formed in the sheet of material at about bag-width distances apart. The bags are then folded a predetermined number of times, in a direction transverse to the bag side structures, so that the skewed-cut top edge(s) of each of the bags remains exposed. | ||||||
| 143 | Method and apparatus for detecting a seal on a plastic bag | US749158 | 1996-11-14 | US5861078A | 1999-01-19 | John J. Huben; John A. Schmidt; Charles H. Sauder; Kevin O. Heindel; Thomas C. Jansen; Stephen A. Saindon |
| A method and apparatus for registration of a seal to a perforation on a plastic bag include a drum for forming a seal on a continuous plastic film and a downstream perforator/cutting station for forming a perforation on the film with respect to the location of the seal. The perforation is properly registered to the seal by sensing the seal location directly, with a seal sensor located near the perforator/cutting station. | ||||||
| 144 | Bag and method of making the same | US278919 | 1994-07-22 | US5786010A | 1998-07-28 | Gilbert N. Yannuzzi, Jr. |
| A bag suitable for use in microwave cooking is constructed of an elongated tube of flexible material closed at one end by a cold seal closure and having a heat seal adhesive deposit applied to the other end thereof for use in closing the bag after filling thereof. | ||||||
| 145 | Zippered film and bag | US821980 | 1997-03-20 | US5782733A | 1998-07-21 | James W. Yeager |
| Reclosable bags, plastic film for making the bags, and a method and apparatus for making the bags are disclosed. The bag has a reclosable fastener (26) connected to a single wall of the bag, and the film (55) has a reclosable fastener (26) connected to one side thereof which does not require attachment to any other portion of the film (55) when making a bag. The fastener (26) has a tamper-proof member attached thereto to indicate if the bag has been previously opened. The film (55) can be wound into a roll (54) suitable for use on conventional bag making machines including form, fill, and seal machines or a chain of coilable reclosable bags can be produced therefrom since the fasteners (26) are connected to the web preferably transversely to the bags longitudinal formation axis. The method and apparatus for making the film (55) includes supplying a continuous web of bag making material, feeding from a coil of continuous fastener material enough fastener material to make a single fastener, (26) positioning, cutting, and attaching the fastener (26) to the film (55), with a plurality of fasteners (26) attached thereon. | ||||||
| 146 | Protective holders for disks | US326540 | 1994-10-20 | US5595798A | 1997-01-21 | William R. Miller |
| A device for protectively holding a disk, and in particular a plastic wallet for protectively containing an optical digitally encoded disk such as a compact disc or CD. The wallet is fabricated of flexible thermoplastic sheet material and includes a pocket for containing the CD, as well as pockets arranged for containing a single graphics sheet viewable through the transparent front and rear covers of the wallet. A preferred embodiment of the CD wallet includes an opening through one of the sheets of the CD pocket for assisting in withdrawing the CD from its pocket. | ||||||
| 147 | Wallet for containing a compact disc, and fabrication method | US455015 | 1995-05-31 | US5595293A | 1997-01-21 | William R. Miller |
| A CD wallet with an entrapped graphics sheet and dedicated to the storing of a particular CD corresponding to the graphics on the entrapped graphics sheet, together with a method for fabricating the dedicated CD wallet. The wallet is fabricated of flexible panels of thermoplastic sheet material, and the entrapped graphics sheet includes two parallel scores thereon and is preferably of greater rigidity than the plastic panels, permitting the plastic panels to bend along the scores on the entrapped graphics sheet to form a spine when the graphics sheet is folded along the scores. | ||||||
| 148 | Method and apparatus for registration of a seal on a plastic bag | US228566 | 1994-04-15 | US5518559A | 1996-05-21 | Stephen A. Saindon; Peter Gietman, Jr. |
| A plastic bag making machine includes a cylindrical drum with a variable diameter. A plurality of seal bars define the circumference of the drum, and are substantially parallel to the drum's rotational axis. A controller determines the distance between registration marks on the film using the output of an encoder as a position signal, and adjusts the diameter of the drum in response to the determined distance. The controller also determines the position of the seal bars relative to the registration marks and adjusts the diameter of the drum in response to the relative position. A downstream device includes a perforation to seal registration controller with a registration control input. The controller provides a control signal to the registration control input in response to changes in the diameter of the drum. | ||||||
| 149 | Peel package sealing machine | US54206 | 1993-04-30 | US5458730A | 1995-10-17 | Charles I. Soodak |
| A machine for making bags or pouches for transporting animal organs for transplantation. The invention machine is small and light weight, and completely sterilizable for use in this environment. The invention also includes additional features of a special corona treatment for the films forming the laminates from which the pouches are made, and heat seals added to the finished pouches to facilitate tearing open of the pouch in a proper manner even in the event of delamination of one of the films. | ||||||
| 150 | Bags and method of making same | US133639 | 1993-10-07 | US5417639A | 1995-05-23 | William M. Cronauer |
| A container strip in the form of a chain of interconnected preopened bags with openings having longitudinal dimensions of at least about 1/32 inch is disclosed. The container strip provides greatly enhanced facility for bag registration and opening during packaging operations utilizing the improved container strip. A process of forming a chain of pre-opened bags is also disclosed. Face and back plastic webs are independently fed along individual paths of travel to a common path. The webs are differentially tensioned while in their independent paths by stretching the face web more than the back web such that the face web will retract longitudinally more than the back web upon release of the web tension. While so tensioned edge seals are formed between the webs to convert the webs into a tube and longitudinally spaced transverse seals are formed between the webs to delineate bottoms of bags. Transverse lines of weakness are formed in said back web to facilitate separation of bags from the remainder of the web during a subsequent use. Tension in individual bag sections of the face web is released by forming longitudinally spaced transverse separations of the sections and thereby producing a space between each contiguous pair of sections. | ||||||
| 151 | Method of making resealable packaging material | US192388 | 1994-02-07 | US5401533A | 1995-03-28 | G. Barton Borland |
| A packaging material for reclosable bags and methods for making same. The material includes a standard packaging material substrates including an initial seal layer, typically for forming a heat seal. A layer of a secondary seal material, typically a tacky material such as a pressure sensitive adhesive is applied in localized areas corresponding to the seal area for the bag. The initial seal layer may have a reduced thickness in this localized area to reduce thickness variation in the finished material. An outer seal layer is provided over the secondary seal area. This outer seal layer may be localized to cover only the secondary seal layer. The outer seal layer may additionally or alternatively have a reduced thickness in the localized area of the secondary seal layer to again reduce thickness variation. Various process are available for providing the layers. In one embodiment, the secondary and outer seal layers are applied by use of a ribbon coater. This application may be directly upon the substrate, or upon a release sheet for later transfer to the substrate. | ||||||
| 152 | Method for making, filling and sealing sacks | US970994 | 1992-11-03 | US5282351A | 1994-02-01 | Konrad Tetenborg |
| The invention relates to a method for making, filling and sealing sacks from a tubular film web of thermoplastic material preferably provided with side folds and printed in format print, where the leading end of the tubular film web is each provided with a transverse weld, and from the tubular film web a section constituting an open sack is cut off, and where the sack is then filled and the open end of the sack is sealed by a transverse weld. For the solution of the object to provide a method of this kind, where it is ensured that the filled sacks are always filled tight and full, it is provided that corresponding to the filling level of the sack the length of the formed tubular film web sections is varied, that after making the transverse weld sealing the sack the tubular film web is intermittently advanced up to a printed mark, that the section constituting the sack is cut off by means of a separating cut without at the same time forming the transverse weld sealing the tube section, that the succeeding tubular film web is again advanced by a comparatively short adjustable length, that alternatively the advanced section of the tubular film web is cut off again, and that the transverse weld sealing the succeeding tube section is formed. | ||||||
| 153 | Process of making blocks of bags | US902726 | 1992-06-23 | US5244450A | 1993-09-14 | Uwe Koehn |
| To make blocks of bags having blocked stubs, which are joined by perforation lines substantially only to the lower opening-defining edge of each block, which lower edge is separated by a substantially continuous slit from the upper opening-defining edge, a tubular web of synthetic thermoplastic material is formed in partial regions with perforation lines extending through both plies. Only the upper ply is cut to form separating slits extending substantially throughout the width of that upper ply. The bags are then separated from the tubular web by hot-wire welding and are stacked. To make blocks of bags in which each bag is joined only at its rear wall to the stub, which serves to stack and retain the bag, transverse perforation lines consisting of holes or slits are formed in the upper ply at the opening-defining edges of the bags to be formed, and both plies are subsequently formed with transverse perforation slits, which are so offset that over the width of the initially formed perforation holes the upper ply is entirely separated from the stub and the lower ply is joined to the stub by lands adjacent to the initially formed overlying perforation line. | ||||||
| 154 | Process for manufacturing package having separable overlay | US944195 | 1992-09-11 | US5242365A | 1993-09-07 | Mary C. Counts; Harry Zimmerman, Jr. |
| A package having a separable overlay is formed by a high speed web roll manufacturing method and adapted for multiple marketing of retail goods. The package has at least three layered sheets of flexible material, the outermost sheet being quickly and easily removable from the remainder of the package without disruption thereof. The package may thus be converted from one for marketing goods under a label of a seasonal or special nature to a package for marketing goods under a label of a general or everyday nature, to thereby extend the profitable shelf-life of the package. | ||||||
| 155 | Perforated plastic bag for packaging fruits or vegetables | US936575 | 1992-08-27 | US5226735A | 1993-07-13 | Daniel Beliveau |
| A bag, for packaging fruits or vegetables, is made of opaque, flexible plastic sheet material. The rear wall of the bag is however provided with a tranversal window made of transparent, flexible plastic sheet material, extending over the width of the bag and comprising a plurality of perforations distributed over its surface. The transparent plastic sheet material is thicker than the opaque plastic sheet material; it requires additional mechanical resistance due to the perforations. A method and apparatus fabricate the plastic bag from two strips of opaque plastic sheet material, and a strip of transparent plastic sheet material. In accordance with this method, the three strips are placed side by side with the transparent strip in the center; the adjacent borders of the strips are heat welded together to convert the three strips to a single band; this band is folded to form a two-layer band; and this two-layer band is tranversely cut at longitudinally spaced apart locations thereof with the two layers heat welded on both sides of each cut. | ||||||
| 156 | Method and arrangement in a bag-making machine for forming weld lines in a web fed therethrough | US946131 | 1992-09-17 | US5215514A | 1993-06-01 | Jan Flyghagen; Roland Olsson |
| An arrangement in a bag-making machine for forming weld lines in a web continuously fed through the machine, preferably a flattened plastic film tube, comprises a cylindrical, freely rotatable drum; a driving belt which is adapted to rotate the drum and pressed against part of the circumferential surface of the drum; and a number of transverse sealing jaws which, as the drum rotates, are movable into engagement with and drivable together with the web for welding the web through a predetermined angle of drum rotation. In order to achieve a high speed of the web, preferably about 150 m/min., and high flexibility in respect of the available range of bag length, the sealing jaws are freely movable relative to the drum outside the circumferential surface thereof and controlled by a control device which is adapted to hold each sealing jaw in a stand-by-position out of engagement with the web, and successively to bring each sealing jaw into engagement with the web with a certain time delay relative to each other. The welding is effected over a constant and relatively long welding distance.In a method of producing, in such a bag-making machine, weld lines in a web which is continuously fed through the machine, the sealing jaws are first held in the stand-by position out of engagement with the web and are then brought into engagement with the web and driven around the drum while performing the welding. | ||||||
| 157 | Method and apparatus for the sequential handling and delivery of flexible products | US956571 | 1992-10-05 | US5203556A | 1993-04-20 | David A. Smith; Robert J. Nestle |
| A method and apparatus for the sequential handling and delivery of individual flexible products, such as plastic bags or containers, is provided which enables the use of extended length orbital packer fingers for removing closely spaced flexible products from a transfer drum and delivering them to a stacking table. The apparatus includes a product drum for delivering a series of closely spaced individual flexible products to a transfer point, and a transfer drum positioned at the transfer point for transferring the flexible products to a delivery point while maintaining substantially the same spacing between the products. Adjacent the transfer drum is an orbital packing mechanism including a shaft mounted adjacent the transfer drum for orbital movement and a plurality of packer fingers secured to the shaft and extending into the annular grooves for removing the flexible products sequentially from the transfer drum and delivering them to the delivery point. The fingers are preferably designed to extend and contact across substantially the full width of the flexible products as the products are removed from the transfer drum to prevent bag fold over problems and misalignment in the stacking of the products. | ||||||
| 158 | Methods of preparation of packaging bags for bottles, methods of preparation of packaging bottles and apparatus utilized therefor | US729936 | 1991-07-15 | US5179819A | 1993-01-19 | Ryuzo Sukeyasu; Yoshiyuki Kishina; Masao Okawa; Naoyuki Horigome; Yasuhito Ito |
| A method of preparation of packaging bags for bottles, wherein a scrap piece formed at the closed end of the bag is discharged by mechanical methods. In one method, a long cylindrical film sheet is fed to the apparatus so as to place the portion of the film sheet forming the open end of the bag at the top and both sides of scrap pieces are cut and separated simultaneously. In another method, a long cylindrical film sheet is fed to the apparatus so as to place the portion of the film sheet forming a scrap piece at the top, and the scrap piece and the periphery of a closed end of the bag are cut simultaneously. In the method of packaging bottles, fitting of the packaging bag to the bottle is performed smoothly and automatically by widely opening the open end of the packaging bag by utilizing vacuum pads, inserting the bottle with a rod into the open end of the bag by utilizing a flapper, allowing partial heat shrinking of the bag for temporary fitting of the bag to the bottle and then tightly fitting the bag to the bottle by heating. By the above techniques, the operations are carried out continuously by using a long film sheet with good efficiency, reduced labor and good quality. | ||||||
| 159 | Method and apparatus for manufacturing sacks, and sacks obtained thereby | US547843 | 1990-06-13 | US5114393A | 1992-05-19 | Natale Vettorato |
| A method and apparatus for manufacturing sacks, made of polyethylene or other heat-sealable material, obtained by superposing two films or sheets which are unwound from respective rolls and are submitted to a pair of longitudinal welds to form a tube, and to transverse welds cuts. The edges of one of the sheets are formed with a re-entrant fold whereby the edges will overlap, with a portion of their outer faces, corresponding portions of the inner face of the other sheet. When only one of the sheets is folded at the edges, the welding of the overlapped end portions is effected by a single respective sealing bar acting on the outer face of the edges to be joined and having an opposite stationary contrasting member. In order to concentrate the welding heat only on the edge portions to be secured to each other, and to prevent said heat from reaching the sheet whose edges have been folded and acted upon by the stationary contrasting member, an insert strip of any suitable material, sufficiently flexible and of such a length as to extend over the entire length of the sealing bars, is inserted between the parts of the edge portions. | ||||||
| 160 | Device for transverse cutting and welding of webs | US602950 | 1990-10-25 | US5112289A | 1992-05-12 | Uwe Kohn |
| In a device for transversely welding and cutting tubular film into bags, feed rolls advance the film to a gripping rail which grips the leading end of the film during operation of cutting and welding devices located behind the gripping rail in the direction of feed. To ensure proper tensioning of the film, the feed rollers are reversed after the film is gripped and prior to operation of the cutting and welding devices. | ||||||
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