Famous Patents
The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7445590 | Method and apparatus for making bags A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zo... | 11/04/2008 |
| 7311649 | Sculpted perforated header for reclosable packages A machine direction method of manufacture of reclosable packages is disclosed wherein a semi-circular or similarly shaped perforated pattern is punched in the web in registration with the package side seals. Continuous lines of perforation are punched in the web par... | 12/25/2007 |
| 6884208 | Method and apparatus for making reclosable bags having slider-actuated string zippers Methods and apparatus for eliminating unattached remnants or tails of bag making film adjacent a string zipper during manufacture of reclosable bags. Gathered film tails may interfere with slider insertion or slider operation or may cause the film to be pulled off o... | 04/26/2005 |
| 6471818 | Procedure to fix a closed zipper-stripe inside a flexible container during its packaging A process for applying a portion of a closed zipper inside a container of flexible material, in which a segment or portion of a closed zipper-strip is first applied by a fixing device upon the inner sides of a film of flexible material, prior to cutting o... | 10/29/2002 |
| 6267714 | Bag-producing apparatus and method of producing foil bags The present invention relates to a method of producing foil bags, wherein at least two foils are supplied that serve as side foils of the foil bags, the foils are connected to each other and then cut into individual foil bags, wherein possibly existing di... | 07/31/2001 |
| 6168558 | Roll of bags and method and device for producing the same Method and device for producing rolls (17) of bags. At least one longitudinal side edge (15, 16) of a line of overlapping bags (17) is folded towards the centre axis of said line of bags. The line is then winded to rolls (17).... | 01/02/2001 |
| 6139479 | Apparatus and method for manufacture of containers of variable length An apparatus for manufacturing containers or bags includes a sealer that produces seals on a moving film. These seals are spaced at intervals that determine the length of the containers. An operator can change the desired container length while the film i... | 10/31/2000 |
| 6027438 | Method and apparatus for manufacturing a fluid pouch An apparatus for inserting a dip strip within a flexible pouch. The apparatus has a first advance means for advancing a predetermined length of the dip strip material and a punch means for punching a hole in the material. The apparatus has a second advanc... | 02/22/2000 |
| 5993368 | Apparatus for manufacturing shipping pouches The present invention is an apparatus for manufacturing interconnected, easily separable, protective pouches, made from heat-sealable material, and adapted to enclose and protect objects. The pouches are made by feeding a continuous sheet of heat-sealable... | 11/30/1999 |
| 5244450 | Process of making blocks of bags 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, ... | 09/14/1993 |
| 5098364 | Waste container liner and method for manufacturing same A method for manufacturing a liner for a waste container is provided, comprising the steps of extruding a flexible envelope, the envelope having ends; flattening the envelope so as to form a top side and a bottom side; cutting a lengthwise slit in the top... | 03/24/1992 |
| 5080747 | Heat sealing mechanism with linearly movable seal bars Heated seal bars are located on opposite sides of an elongated strip of heat sealable material adapted to be advanced with a step-by-step motion. When the strip dwells, the bars are shifted linearly inwardly into engagement with the strip to form a heat s... | 01/14/1992 |
| 4932932 | Method of and apparatus for cutting blanks from an elastic paper A method of cutting blanks from an elastic paper comprises the following steps: removing a single elastic paper web of indefinite length from a mother roll; longitudinally cutting the single web, as it runs off the mother roll, into a plurality of paper p... | 06/12/1990 |
| 4838977 | Process and apparatus for making plastic carrying bags or sacks To make plastic carrying bags or sacks, sections are cut or are severed by hot wire welding from a gusseted tubular film by a formation of transverse seam welds and transverse severing cuts or by hot wire-welded transverse seam welds. At least in their bo... | 06/13/1989 |
| 4698112 | Process apparatus for making differently-shaped polyethylene bags and the method thereof An apparatus for producing various shapes of polyethylene bags includes a heating mold separating means, a cutting mold separating means and a collecting means. By using such an apparatus for making PE bags, a double-layered polyethylene sheet rolled on a... | 10/06/1987 |
| 4696050 | Package formed as bag to be carried A package which is formed as a bag to be caried has a plurality of lateral walls having upper portions which form a gripping part and lower portions which form a body part, two first opposite walls are folded, two second opposite walls are provided in the... | 09/22/1987 |
| 4588392 | Method of forming a thermoplastic film sack having a stress relieved bottom gusset seal line A plastic film sack having gussetted side walls, and in the bottom of said sack, a heat-seal stripe welding together the four film layers in the gusseted regions of the sack and a heat seal stripe welding together the two film layers between said gusseted... | 05/13/1986 |
| 4385950 | Small ice packs and method of manufacturing the same The specification discloses a refillable sanitary ice pack (10) for single patient use. The ice pack takes the form of a generally rectangular envelope (12) having two sides (14, 16), an open end (18) and a closed end (20). Two pairs of tie strings (22, 2... | 05/31/1983 |
| 4253383 | Labelled fabric, a method and an arrangement for making a labelled fabric A labelled fabric includes a wide-mesh fabric having two opposite surfaces, a first web which is guided against one of the opposite surfaces of the wide-mesh fabric and a second web which is guided against the other of the opposite surfaces of the wide-me... | 03/03/1981 |
| 4126085 | Method of producing a reclosable bag A flexible closure strip capable of being bent manually and retaining the bent shape is interposed between the front ply and the back ply of a thermoplastic bag. The front and back plies are heat sealed to each other to form a pocket in which the stiffene... | 11/21/1978 |
| 4089255 | Method for making a bag-in-carton A method is disclosed which makes a bag-in-carton by successively and intermittently advancing cartons, the upper ends of which are opened, and during the advancement successively supplying each of the cartons with a flattened bag, and subsequently blowin... | 05/16/1978 |
| 4088264 | Multiwall pouch bags for detached packaging of commodities A bag of tubular form open at one end and closed at the other end, consisting essentially in the combination of: an outer tube comprising one or more contiguous plies of non-heat sealable, flexible sheet material, such as paper, and an inner tube comprisi... | 05/09/1978 |
| 4077308 | Control for bag making machine Apparatus for making a succession of bags from a web of sheet material which has been printed with a series of spaced parallel bands of heat activatable adhesive located at intervals corresponding to the lengths of the bags to be made wherein the web is f... | 03/07/1978 |
| 4041851 | Method for making plastic bags The invention provides a novel method of making a plastics bag and a novel plastics bag, the method comprising folding a sheet of plastics material to form a U-shaped blank, welding the longitudinal edges of the blank, and providing either two or four wel... | 08/16/1977 |
| 4003588 | Inflatable protector bag or vehicle safety device An inflatable protector bag of a vehicle safety device for protecting a vehicle occupant during a collision by the vehicle. The protective bag has a collapsed inoperative condition and an expanded operative condition having when unloaded, a generally hexa... | 01/18/1977 |
| 3960062 | Method of making a band of plastic bags A band of bags of plastic material connected with each other by perforation lines. In the two end parts of each perforation line the number of perforations and/or the width of the perforations per unit of width is greater than in the central part of the p... | 06/01/1976 |
