| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | PLASTIC BAGS, ROLLS OF PLASTIC BAGS, AND TUBULAR BLOWN FILM PROCESSES OF MAKING THE SAME | US14294353 | 2014-06-03 | US20140353192A1 | 2014-12-04 | Brian C. Dais; Jose Porchia; Juan M. Garces |
| Plastic bags, rolls of plastic bags, and tubular blown film processes for making rolls of plastic bags. The rolls of plastic bags include a tubular blown film with a plurality of perforation lines along which plastic bags are separated from the roll. The perforation lines are formed so that portions of the lips of the plastic bags are offset from each other. The offset portions of the lips facilitate opening of the bags. | ||||||
| 22 | Tri-fold side seamed plastic produce bag, method and apparatus for making same | US13566491 | 2012-08-03 | US08708879B2 | 2014-04-29 | Greg Tan |
| A trifold side seamed film produce bag includes a front wall and a back wall, first and second side edges sealed together and a seamless bag bottom. The bag is joined at the side edges to additional bags by a perforation. The bag is corona treated on at least one wall and promotional material is printed on the treated surface. The bags are folded to one third of their height to fit compact bag roll dispensers. The bags are folded in a Z-fold or C-fold configuration. The method includes manufacturing the bags and winding them onto cores or forming the bags into coreless rolls. An apparatus for forming the side seamed bags includes an extruder, a tubing flattener, a perforator, a sealer, a corona treater, a printer and a slitter. The treated, printed bags may be stored on rolls for later slitting into two bag streams and folding into thirds. | ||||||
| 23 | Tri-fold side seamed plastic produce bag, method and apparatus for making same | US13101946 | 2011-05-05 | US08317670B2 | 2012-11-27 | Greg Tan |
| A trifold side seamed plastic produce bag includes a front wall and a taller back wall, first and second side edges sealed together and a seamless bag bottom. The taller back wall provides means for finding the bag opening. The bag is joined at the side edges to additional bags by a perforation. The bag is corona treated on at least one wall and promotional material is printed on the treated surface. The bags are folded to one third of their height to fit compact bag roll dispensers. The bags are folded in a Z-fold or C-fold configuration. The method and apparatus for producing the bags includes a slitter that removes a strip of plastic from only the top layer of the bag stream to form an extended flap on each bag. The method includes manufacturing the bags and winding them onto cores or forming the bags into coreless rolls. | ||||||
| 24 | TRI-FOLD SIDE SEAMED PLASTIC PRODUCE BAG, METHOD AND APPARATUS FOR MAKING SAME | US13566491 | 2012-08-03 | US20120294552A1 | 2012-11-22 | Greg Tan |
| A trifold side seamed film produce bag includes a front wall and a back wall, first and second side edges sealed together and a seamless bag bottom. The bag is joined at the side edges to additional bags by a perforation. The bag is corona treated on at least one wall and promotional material is printed on the treated surface. The bags are folded to one third of their height to fit compact bag roll dispensers. The bags are folded in a Z-fold or C-fold configuration. The method includes manufacturing the bags and winding them onto cores or forming the bags into coreless rolls. An apparatus for forming the side seamed bags includes an extruder, a tubing flattener, a perforator, a sealer, a corona treater, a printer and a slitter. The treated, printed bags may be stored on rolls for later slitting into two bag streams and folding into thirds. | ||||||
| 25 | 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. | ||||||
| 26 | 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. | ||||||
| 27 | 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. | ||||||
| 28 | Packaging material, apparatus and method | US423219 | 1995-04-17 | US5474208A | 1995-12-12 | Joseph F. Ball |
| A coil of an interconnected chain of open bags is provided in which the coil has a center opening having a diameter at least as great as the transverse dimension of the bags. A dispenser is provided on which a coil of bags is mounted. An end of the chain is pulled from the center opening and fed around a tapered mandrel and thence over a feed control mandrel oriented in angular relationship with the tapered mandrel. The web is then fed to a bagging machine for dispensing, loading and closing of the bags. The table on which the coil is mounted is rotatable so that the orientation of a span of bags running from the coil to the tapered mandrel remains substantially constant as the web is fed. | ||||||
| 29 | 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. | ||||||
| 30 | Method and apparatus for maintaining proper perforation phasing | US214066 | 1994-03-15 | US5417638A | 1995-05-23 | Danford C. Anderson; Peter J. Hatchell; Emiel Lambrecht |
| In an apparatus for making plastic bags or the like from a continuous film of material comprising a sealing drum having at least one seal bar for imparting transverse seals to the film at regularly spaced intervals and a perforator having a rotatable perforator blade for imparting transverse perforations to the film at regularly spaced intervals, an apparatus and method are disclosed for tracking the positions of each seal and each perforation and comparing the difference between these positions to a desired difference and thereafter adjusting the rate of rotation of the perforator blade until the difference between the positions of each seal and each perforation is equal to the desired difference to thereby maintain a desired spacing between each seal and each perforation. | ||||||
| 31 | Packaging material, apparatus and method | US847662 | 1992-03-05 | US5310056A | 1994-05-10 | Joseph F. Ball |
| A coil of an interconnected chain of open bags is provided in which the coil has a center opening having a diameter at least as great as the transverse dimension of the bags. A dispenser is provided on which a coil of bags is mounted. An end of the chain is pulled from the center opening and fed around a tapered mandrel and thence over a feed control mandrel oriented in angular relationship with the tapered mandrel. The web is then fed to a bagging machine for dispensing, loading and closing of the bags. The table on which the coil is mounted is rotatable so that the orientation of a span of bags running from the coil to the tapered mandrel remains substantially constant as the web is fed. | ||||||
| 32 | Maintaining perforation phasing | US23992 | 1993-02-26 | US5292299A | 1994-03-08 | Danford C. Anderson; Peter J. Hatchell; Emiel Lambrecht |
| In an apparatus for making plastic bags or the like from a continuous film of material comprising a sealing drum having at least one seal bar for imparting transverse seals to the film at regularly spaced intervals and a perforator having a rotatable perforator blade for imparting transverse perforations to the film at regularly spaced intervals, the film comprising print marks appearing thereon at regularly spaced intervals, an apparatus and method are disclosed for tracking the positions of each print mark and each perforation and comparing the difference between these positions to a desired difference and thereafter adjusting the angular position of the perforator blade until the difference between the positions of each print mark and each perforation is equal to the desired difference to thereby maintain a desired spacing between each print mark and each perforation. | ||||||
| 33 | Center feed roll | US809048 | 1991-12-16 | US5174449A | 1992-12-29 | Joseph F. Ball |
| A coil of an interconnected chain of open bags is provided in which the coil has a center opening having a diameter at least as great as the transverse dimension of the bags. A dispenser is provided on which a coil of bags is mounted. An end of the chain is pulled from the center opening and fed around a tapered mandrel and thence over a feed control mandrel oriented in angular relationship with the tapered mandrel. The web is then fed to a bagging machine for dispensing, loading and closing of the bags. The table on which the coil is mounted is rotatable so that the orientation of a span of bags running from the coil to the tapered mandrel remains substantially constant as the web is fed. | ||||||
| 34 | Web of interconnected bags | US470982 | 1990-01-26 | US5077957A | 1992-01-07 | Fritz Brinkmann |
| A method for manufacturing a web of interconnected bags from a semitubular web of material, in which pockets are formed at a first side of the web and a second side of the web adjacent a first of two longitudinal outer edges of the web. At least one continuous strip is inserted into the pockets before separation of the bags. The strips are cut to predetermined lengths, and their ends are fastened together. The web is welded together along transverse lines substantially perpendicular to the pockets for producing one bag at a time, which is conveyed transversely substantially perpendicular to the direction motion of the web. The pockets project at one of the two sides of the web beyond the pockets on the other side of the web substantially perpendicular to the direction of motion of the web. Each bag is welded and conveyed substantially perpendicular to the direction of motion of the web. | ||||||
| 35 | Method and device for joining foil hoses | US324316 | 1989-03-16 | US5009632A | 1991-04-23 | Bernhard Kruessel |
| A transverse-welding station [(12)] is provided for joining the hose parts [(11a, 11b)] of foil hoses [(11)] that are welded to bag lengths [(BL)] by transverse welds [(21, 22)]. In this station, the hose parts are superimposed such that the joining weld is laid exactly on the superimposed transverse welds [(22) ] of the two hose parts. This results in a joining of the hose ends that does not use adhesive tape and observes the pitch determined by the length of the bags. The invention provides a joining that is practically imperceptible and does not at all impair the quality of the bags made. In particular, the occurrence of single bags that would have to be considered as waste is avoided. The method is applicable for cutting out imperfections from a foil hose, as well as for connecting the beginning of one hose roll to the end of the preceding hose roll. | ||||||
| 36 | Method for manufacturing film rolls | US360927 | 1989-03-22 | US4994128A | 1991-02-19 | Isao Toshima |
| A roll film (1) rolled around a winding core (2), having resin made fastener claws (3) and (4) of an engagement tool along with both edges of the film. The claws are melt-bonded to the film. The film (1) is wound in a serpentine manner relative to the winding core (2). This roll film may be incorporated into an automatic bag producing and filling machine without any intricate operation. When the roll film is paid off, it is possible to smoothly supply the film at a constant speed and to form a fastener claw provided bag with a high efficiency. | ||||||
| 37 | Chain of laterally interconnected bags | US693095 | 1985-01-22 | US4584706A | 1986-04-22 | Steven Ausnit |
| An improved method and mechanism for forming a chain of laterally interconnected plastic bags which have confronting releasably interlocking rib and groove profile elements on the inner confronting wall surfaces or at the edge of said surface including advancing a tube or a folded film of plastic bag material having interlocked rib and groove profile elements, forming spaced spot seals at the profile element and alternately at another location to permanently join the layers of material and permanently join the rib and groove elements over the area of the spot, forming lateral seals extending the width of the material at the location of the spot seals to provide side seams for the adjacent bags, and cutting through the material along the center of the seam to partially separate the bags with the cuts extending a predetermined distance partially into the spot seals to control their remaining strength and control the separation force needed to separate adjacent bags. | ||||||
| 38 | Method of forming a bag chain | US441243 | 1982-11-12 | US4523918A | 1985-06-18 | Steven Ausnit |
| An improved method and mechanism for forming a chain of laterally interconnected plastic bags which have confronting releasably interlocking rib and groove profile elements on the inner confronting wall surfaces or at the edge of said surface including advancing a tube or a folded film of plastic bag material having interlocked rib and groove profile elements, forming spaced spot seals at the profile element and alternately at another location to permanently join the layers of material and permanently join the rib and groove elements over the area of the spot, forming lateral seals extending the width of the material at the location of the spot seals to provide side seams for the adjacent bags, and cutting through the material along the center of the seam to partially separate the bags with the cuts extending a predetermined distance partially into the spot seals to control their remaining strength and control the separation force needed to separate adjacent bags. | ||||||
| 39 | Method of making plastic bag construction in serial roll form | US6239 | 1979-01-24 | US4232589A | 1980-11-11 | Edwin F. Ernst |
| A plurality of expandable bags are serially connected lengthwise in roll form. Each bag is of substantially long length and has an expandable gusset near one end thereof and traversely of the length. The gusset end of each bag is respectively connected to the filling or open end of the next bag by perforated or weakened structure. Various modifications of the position of the opening are incorporated. Also, the bags are rolled into serial form in a compact package for distribution and use with the gusset and opening portions of each bag being rolled inwardly to the inside of the roll, or outwardly to the outside of the roll. The method of making these serially connected bags in roll form is also included. | ||||||
| 40 | Apparatus for making tear resistant separable end-connected bags | US696297 | 1976-06-15 | US4064776A | 1977-12-27 | Charles R. Walitalo; Alvin E. Ericson |
| Continuous strip closed-bottom open-mouthed packaging bags are produced by continually making, at spaced intervals in a continuous flattened tubular oriented plastic film supply, a transversely extending heat seal to define a bag bottom, and, adjacent each heat seal, perforating the two plies of the film supply with a blade heated to effect annealing of the edges of the perforations and having a serrated cutting edge with spaced deep recesses to define connecting tabs between perforations. | ||||||
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