子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Air separation method and apparatus for pleating a plastic film web | US926320 | 1992-08-10 | US5246416A | 1993-09-21 | Michael Demura; James LaCombe; Roger A. Novak; Raymond D. Barta |
| An apparatus and method for introducing a pleat into an advancing folded-over film web is provided which utilizes air under low pressure to separate the opposing faces of the web prior to the pleat being made. By unblocking the faces of the folded-over web, the web may be readily advanced and pleated without hang ups, misalignment, or tearing of the web. The apparatus includes a pair of substantially aligned and spaced-apart receiving plates over which opposing faces of the film web pass, a generally circular wheel positioned between the receiving plates and extending into the space therebetween for forming a pleat in the folded-over film, and an air passage positioned between the receiving plates for directing a flow of air between the opposing faces of the film web to separate the opposing faces of the web prior to passing over the receiving plates. | ||||||
| 82 | Air separation method and apparatus for pleating a plastic film web | US414844 | 1989-09-29 | US5147278A | 1992-09-15 | Michael Demura; James LaCombe; Roger A. Novak; Raymond D. Barta |
| An apparatus and method for introducing a pleat into an advancing folded-over film web is provided which utilizes air under low pressure to separate the opposing faces of the web prior to the pleat being made. By unblocking the faces of the folded-over web, the web may be readily advanced and pleated without hang ups, misalignment, or tearing of the web. The apparatus includes a pair of substantially aligned and spaced-apart receiving plates over which opposing faces of the film web pass, a generally circular wheel positioned between the receiving plates and extending into the space therebetween for forming a pleat in the folded-over film, and an air passage positioned between the receiving plates for directing a flow of air between the opposing faces of the film web to separate the opposing faces of the web prior to passing over the receiving plates. | ||||||
| 83 | Delivery device for bags with freshly glued bases | US599798 | 1990-10-19 | US5131973A | 1992-07-21 | Richard Feldkamper |
| A delivery device is disclosed for bags having freshly glued bases. A series of squeeze cylinders and endless squeeze belts are provided to define a conveying path having the shape of a twin S. As a procession of bags traverses each cylinder, the opposite bag edges are squeezed between pairs of the belts. | ||||||
| 84 | Process for making draw tape bags with integrally formed draw tapes | US448152 | 1989-12-08 | US5057065A | 1991-10-15 | James E. Buchman |
| A process for manufacturing draw tape bags, unique tubular films used in the process and the resulting draw tape bags are disclosed. The process begins with the step of forming a tubular film having a longitudinal region with a film strength greater than the film strength of the remainder of the tube. Next, the longitudinal region of greater strength is slit out of the tube and into draw tape ribbons, leaving the remainder of the tube in the form of a continuous sheet with two side edges. A hem with a draw tape access hole is next formed from each of the two side edges, each of the hems encasing a draw tape ribbon. Last, transverse seams are formed in the folded continuous sheet to define individual bag edges and the folded continuous sheets is severed to form individual bags. In one embodiment the longitudinal region of greater strength is made from a resin different than the resin making up the remainder of the tube. In another embodiment the tubular film is formed with the region of greater strength being thicker in its cross-section than the cross-section of the remainder of the film. The resulting bag has a draw tape which is made from film severed from the marginal portion of the bag wall but which has a greater strength than the bag wall film. | ||||||
| 85 | Rotary draw tape bag making apparatus and method | US280027 | 1988-12-05 | US5024642A | 1991-06-18 | James E. Buchman; Kenneth C. Jahnke |
| An apparatus is provided for continuously sealing a thermoplastic draw tape to a thermoplastic bag at a sealing section. The bag forms one of a plurality of bags formed on a continuous web of thermoplastic material. The bag includes a hem defining a channel wherein the draw tape is disposed. The section of the bag which includes the hem and the tape thus includes a plurality of layers of thermoplastic material. The apparatus comprises a conveyor for continuously moving the web; a first sealing station for forming a heat seal through at least two of the layers of the hem and tape, the seal being formed on a first side of the bag; and a second sealing station for forming a heat seal through the rest of the layers of the hem and tape at the sealing section on a second side of the bag. The first and second sealing stations form the seals while the web is continuously moved by the conveyor. | ||||||
| 86 | Manufacturing method of pleated multilayer bag | US269764 | 1988-11-10 | US4915679A | 1990-04-10 | Toyokichi Gotou |
| In a method of manufacturing a pleated multi-layer bag, a tubular synthetic resinous film collapsed flatly, with each side edge of the film folded inwardly to form a pair of pleats extending along the side edge, is laid upon a length of an outer-layer bag material. The film and the bag material are transported while one of the pair of pleats at each side edge of the film is set upright to form an upstanding section. Subsequently, opposite side portions of the outer-layer bag material are folded back toward the tubular synthetic resinous film. The upstanding section is folded down toward the other pleat. A part of each of the opposite side portions is forced into a space between the upstanding section and the other pleat at a corresponding one of the opposite side edges of the tubular synthetic resinous film. The opposite side portions of the outer-layer bag material are folded over the tubular synthetic resinous film in such a manner that the opposite side portions extend along the outer surface of the film. The resinous film and outer-layer bag material are then united and selected lengths thereof cut and sealed at one end to form bags. The method maintains the tubular synthetic resinous film in its collapsed state through the various steps, thereby avoiding entry of dirt, germs or bacterial into the bag as it is being manufactured. | ||||||
| 87 | Tamper evident link bags | US167294 | 1988-03-11 | US4832505A | 1989-05-23 | Steven Ausnit; Per Bentsen |
| Bags with reclosable zippers along their mouth ends and having pull flanges extending above the zippers, have attending upwardly from said pull flanges separably attached tamper evident extensions which are adhesively fixed to one another so that it is necessary to separate the tamper evident extensions from the pull flanges along lines of weakening when it is desired to gain access into the bag through the reclosable zipper. A method of and an apparatus for making the bags in linked chains and a method of and apparatus for filling the linked bags and then completing the filled bags are disclosed. | ||||||
| 88 | Device serving to fashion carrying handles for attachment to sheet wrapping material | US043101 | 1987-04-27 | US4735601A | 1988-04-05 | Andrea Cinotti |
| In a device according to the invention, a roll of relatively narrow strip is unwound, measured into discrete lengths in which two C-shaped incisions are punched, then indexed through a cutting station and conveyed forward singly above the level of the sheet of wrapping film, at right angles to the direction in which it is run through the machine. The two ends of each discrete strip are picked up by suckers that draw together through a plane parallel with the path through which the strip is conveyed, while the strip itself is lifted from the middle; the strip is thus made to assume an upturned `T` profile, with the two incisions sandwiched together, before being offered and heat-sealed to the sheet film from which single wrappings are ultimately formed. | ||||||
| 89 | Method and apparatus for producing drawstring bags | US829808 | 1986-02-14 | US4664649A | 1987-05-12 | James R. Johnson; Mark Hudgens |
| A method and apparatus for forming draw tape bags wherein the bag material moves continuously during the manufacture, except for the last step. A roll of folded web is provided, and the loose edges are turned inwardly to form upper hems for the bags. The web continues to move, and a cutter is actuated to move through a circle and engage the web to punch finger holes in the hem. The web is further carried to a tandem sealer, the web passing over a roll where heated air is directed at the area of the hem. A "Teflon" strip is placed between the hems to prevent sealing them together. The web continues to a second sealing roll where the opposite side is sealed in the same way. The final step utilizes a stop-start apparatus with a side sealing blade. The side sealing blade has one radius for the body of the bag, and a larger radius for the hemmed area. | ||||||
| 90 | Method and apparatus for manufacturing draw tape bags | US652254 | 1984-09-20 | US4624654A | 1986-11-25 | Dana M. Boyd; Franz Bustin |
| A method of forming plastic film bag bodies with draw strips comprises the steps of providing a continuous length of plastic film once folded to provide superposed panels and two free longitudinal edges opposite a fold edge, folding the two longitudinal free edges inwardly between the adjoining panels to provide a pair of longitudinal inwardly turned hems of double thickness, inserting a continuous material draw strip into each hem, joining together longitudinally the double layer thicknesses of each hem to form a channel along a longitudinal edge of each panel containing one of the continuous strips and transversely severing the material and strips at regular intervals to separate individual bag body lengths from the continuous web of material. Holes are punched along the folded hems of the bag before the draw tapes are inserted so as to allow access to the inserted tapes in the manufactured bag. | ||||||
| 91 | Insertion of draw tape strips in draw tape bag manufacture | US652252 | 1984-09-20 | US4597750A | 1986-07-01 | Dana M. Boyd; Vernon C. Catchman; Kevin Broderick |
| A method of inserting a continuous, pliable strip into each hem formed along an edge, an edge of one of a pair of superposed panels forming an elongated, continuous web, the hem being formed by turning an edge portion of a panel inward between the panels. Each strip is fed from a position outside the web on the hemmed side of the web, across the hem(s) to a position between the panels within the web, reversed in direction and fed to a position between the portions of the panel forming a hem. Each strip is then turned from a transverse direction to a longitudinal direction and fed longitudinally into the hem. An apparatus for performing the steps of the method is described for use in the manufacture of thermoplastic film draw strip bags and feeds a pair of extremely thin and flexible plastifilm strips into a pair of hems, each formed in one of a pair of superposed panels, eventually forming the sides of the finished bag. A suitable mechanism such as pinch rollers are provided downstream from the apparatus for advancing the web through the apparatus and drawing the web with inserted strips away from the apparatus. | ||||||
| 92 | Method and apparatus for applying coupon strips to paper bags | US581547 | 1984-02-21 | US4537586A | 1985-08-27 | Ronald S. Gale; William E. Bristol; Carroll Noonan |
| A combination of a self-opening shopping bag and a coupon strip is disclosed together with apparatus and a method for making same. An elongated coupon strip containing coupons is affixed inside the front panel of the bag. The coupon packet is sized and positioned widthwise between the side gussets of the bag. The strip has a perforated margin portion and only the margin is adhered to the bag so that the coupons can be readily detached. The coupon-applying apparatus includes a coupon strip roll stand positioned in line with the bag paper roll stand. A glue applicator is mounted on the coupon strip roll stand for applying glue to the margin of the strip. The coupon strip meets the underside of the bag paper as the paper travels around an outfeed roller of the bag paper roll stand. The coupon roll stand includes a brake for tensioning the strip. Spacers are mounted on the former and spaced apart for the coupon strip to pass between them. The bag paper is formed into a tube enclosing the strip and protecting it during subsequent steps in the bag-making process. A metering pump is operably connected to a rotationally driven element of the bag-making machine for proportioning the discharge of glue from the glue applicator to the rate of bag production. | ||||||
| 93 | Apparatus and method for securing top ends of sack gussets | US599216 | 1984-04-12 | US4534752A | 1985-08-13 | Robert A. Ferrell; Richard G. Rebber |
| The top end of a side gusset of a reclosable sack is securely closed as by means of spots of adhesive on and between the infolded gusset walls, leaving the bag walls free to spread relative to the gusset, and leaving the remainder of the gusset to its opposite end free to expand. A method and apparatus are provided for making the sacks. | ||||||
| 94 | Rotary envelope cutting method | US378279 | 1982-05-14 | US4429603A | 1984-02-07 | William A. Chapman, Jr.; John J. Crowley |
| A rotary envelope machine blank cutter is provided with laterally adjustable, independent frame units for each meshing set of knife rolls for changing the depth of a side cut into a blank for envelope size and style production changes. The rotational and axial meshing of hard and soft knives respective to a single knife roll set is adjusted without disturbing the roll mount of either knife. Changes in envelope length or style are accommodated by the mechanical capacity to adjust the rotational cut timing between the knife roll sets of a two-set unit and also between respective cutting units of two or more two-set units. As in the case of lateral cut adjustments, knife roll mounts are undisturbed by rotational timing adjustments. Consequently, the machine may be quickly and accurately changed for production runs of any of several envelope style and several sizes respective to each style: all adjustments being made without disturbing the knife profile mesh of any knife set. | ||||||
| 95 | Method and apparatus for assembling and attaching zipper closure strips to sacks | US348210 | 1982-02-12 | US4415386A | 1983-11-15 | Robert A. Ferrell; James A. Robinette |
| Apparatus and method for assembling and attaching zipper closure means in strip form to open ends of flat sacks fed serratim into an attachment station. Consecutive sections of the closure means must be in proper registration with the sacks in such station. Assembly of the sections with the sack ends is coordinated by monitoring relative orientation of the sections and the sacks and automatically correcting for deviations from the registration. | ||||||
| 96 | Non-metallic paste sectors and methods of fabricating and utilizing same | US78466 | 1979-09-24 | US4292919A | 1981-10-06 | Walter C. Taylor |
| A paste sector for applying paste in a predetermined pattern to an item being manufactured, such as to the open bottom portion of a partially formed bag in a bag making machine. The paste sector is molded from a substantially resilient non-metallic material, and includes an added-thickness bottom portion adapted to be directly fitted to a paste sector shaft. The paste sector is preferably injection molded from a rubber-like urethane material, and is provided with a Teflon coating having an affinity for the low viscosity paste employed in the fabrication of paper bags. | ||||||
| 97 | Bag making apparatus | US10825 | 1979-02-09 | US4256023A | 1981-03-17 | Umberto Vodarich |
| The present invention provides a bag making apparatus comprising a first and a second pair of abutments, wherein the abutments of each said pair of abutments are co-operable to grip therebetween a part of a sleeve of bag material to be formed into a bag and adhesive applicator means and constructed and arranged whereby, in use, a first portion of a sleeve of bag material to be formed into a bag is gripped adjacent one end by said first pair of abutments, adhesive is applied to said sleeve, said one end is caused to overly a second portion of said sleeve to form a bag having a first fold and which first fold being stabilized by adhesive, a third portion of the bag so formed adjacent the end defined by said first fold is gripped by said second pair of abutments adhesive is applied to the bag, and said end defined by said first fold is caused to overly a fourth portion of the bag so formed to form a second fold and which second fold being stabilized by adhesive. | ||||||
| 98 | Indexing roll drive system | US824938 | 1977-08-15 | US4192705A | 1980-03-11 | Robert J. Wech |
| A short dwell indexing drive system for intermittently moving a web of thermosealing material through a bag machine includes a conjugate cam defined by a pair of disc cams on a continuously driven input or cam shaft which engage cooperating groups of cam followers on an intermittently driven output shaft that yields one web draw/dwell cycle for each revolution of the cam shaft. In the preferred embodiment the contour of the cams smoothly index the web by first accelerating the output shaft from zero velocity through a relatively low peak velocity and thereafter decelerating the web to zero velocity at a point in the cycle in excess of 180.degree. before the output shaft is held stationary to the end of the cycle during a dwell period. Belt drives and an adjustable jackshaft which allows the use of different pulley ratios are connected between the output shaft and a web engaging draw roll for amplifying or reducing motion of the output shaft and for providing articles such as bags of different sizes.If articles such as heat sealed thermoplastic pouches are to be made from webs of thermosealing material or laminate, the drive system may be modified by changing the cam configuration to provide a long dwell that requires in excess of 180.degree. of each cycle of operation with the remaining portion of the cycle being used to advance the web. | ||||||
| 99 | Method and apparatus for securing carrying handles to bags | US685325 | 1976-05-11 | US4133252A | 1979-01-09 | Ernest Eckstein; Anton Helmle; Jordan Perlin; Irving Spitalnik |
| An apparatus for securing handles onto a stream of bags sequentially transported on a first conveyer and then is engaged by a second conveyer. The second conveyer interacts with the first conveyer to receive the bags and take them through a series of stations. At one of these stations, handles are attached to each of the bags. A supply of handle material is cut into flat strips. The flat strips are bent into a U-shape and the legs thereof are fastened onto the bags. | ||||||
| 100 | Bag machine cycle interrupt | US734703 | 1976-10-21 | US4077306A | 1978-03-07 | Robert J. Wech |
| This application discloses an apparatus for preventing heat damage to thermoplastic web material being converted to produce bags. After a selected number of bags have been made, the web feeding rolls are automatically stopped for a short period, which may be for one or more machine cycles or stopped for an indeterminate period on command of the operator, to allow removal or transfer of a completed stack of bags. When web movement is stopped, the web feeding rolls that are driven by a belt, are rotated in a direction opposite to the feed direction to withdraw the leading edge of the web from the plane in which the heated seal bar reciprocates. Withdrawing of the web occurs by applying additional tension to that reach of the belt which will effect reverse rotation of the feeding rolls. Such additional tension is created by freely rotating pulleys mounted on a plate oscillated by an actuator. | ||||||
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