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| Number | Title | Issue Date |
| 4778557 | Multi-stage corona laminator A multi-stage corona laminator may be used to produce a relatively thick, i.e., 10 mils or greater corona bonded laminate characterized by low dielectric build-up, and preferably the presence of one or more oriented layers within the laminate material.... | 10/18/1988 |
| 4778715 | Inter-ply adhesion between saran and linear ethylene copolymers Disclosed are multi-layer films having improved adhesion between layers. A film layer comprising vinylidene chloride copolymer is directly adhered to a film layer comprising a blend of ethylene/butyl-acrylate copolymer with linear ethylene/alpha-olefin co... | 10/18/1988 |
| 4768411 | Easy-open bag and apparatus and method for making same A bag and a method and apparatus for forming an easy open bag in a vertical form-fill-seal process wherein a bag is formed from a sheet of thermoplastic film and a heat seal betwee bags as they are filled serves as the top closure for the lower bag and a ... | 09/06/1988 |
| 4765857 | Protective patch for shrinkable bag Disclosed is a protective patch for biaxially a heat shrinkable, thermoplastic vacuum bag for protecting the bag from puncture by sharp protruding bones in bone-in cuts of meat which are vacuum packaged within the bags. The patch is made from multi-layer ... | 08/23/1988 |
| 4761080 | Multilayer gusseted bag with reverse fin seals A gusseted bag is provided which, according to a preferred mode, is constructed of thermoplastic multilayer film with an outer sealing layer and has a seamless folded bottom and reverse-fin-sealed sides. Advantageously, the starting material for such bags... | 08/02/1988 |
| 4755403 | Protective patch for shrinkable bag Disclosed is a protective patch for a biaxially heat shrinkable, thermoplastic vacuum bag for protecting the bag from puncture by sharp protruding bones in bone-in cuts of meat which are vacuum packaged within the bags. The patch is made from multi-layer ... | 07/05/1988 |
| 4755419 | Oxygen barrier oriented shrink film A coextruded multiple layer oriented film comprises a core layer of ethylene vinyl alcohol copolymer, and two intermediate layers each comprising a polyamide. Two outer layers comprising polymeric materials or blends of polymeric materials such as (a) lin... | 07/05/1988 |
| 4755436 | Inter-ply adhesion between saran and linear ethylene copolymers A multi-layer film is disclosed having improved adhesion between layers and consisting essentially of the following elements: (a) a layer consisting essentially of vinylidene chloride copolymer; and, (b) a layer consisting essentially of about 5-40 wt. % of et... | 07/05/1988 |
| 4755402 | Thermoplastic multi-layer barrier packaging film and bags made therefrom Disclosed is a multi-layer heat-shrinkable (oriented) film having a barrier layer of polyvinylidene chloride copolymer and having an outer layer of polyamide. The polyamide layer is directly adhered to the barrier layer. Also disclosed is a method to make... | 07/05/1988 |
| 4753700 | Packaging film A multilayer film useful in the packaging of high acid food products at elevated temperatures comprises a core layer of ethylene vinyl alcohol copolymer, two intermediate layers each comprising a polyamide; outer blend layers of linear low density polyeth... | 06/28/1988 |
| 4746562 | Packaging film A multilayer film useful in the packaging of high acid food products at elevated temperatures comprises a core layer of ethylene vinyl alcohol copolymer, two intermediate layers each comprising a polyamide; outer blend layers of linear low density polyeth... | 05/24/1988 |
| 4743324 | Printing plate mounter An apparatus for mounting a flexible printing plate on a printing cylinder comprises a table comprising a planar surface and two separable sections, whereby the sections when separated can accommodate therebetween an upper surface of the printing cylinder... | 05/10/1988 |
| 4735855 | Thermoformable laminate A thermoformable polymeric laminate with good optical properties, extended shelf life, and memory characteristics comprises a core layer comprising an oxygen barrier material; a polyamide layer disposed on each surface respectively of the core layer, the ... | 04/05/1988 |
| 4729209 | Apparatus and method for inserting pouches into boxes An apparatus and method for inserting pouches into boxes or lining boxes with pouches is disclosed. Rather than manually line boxes, the apparatus takes a pouch from a horizontal stack of pouches, opens the pouch over an open box, partially inflates the p... | 03/08/1988 |
| 4729926 | Packaging material for long-term storage of shelf stable food products and method of making same A thermoplastic laminate suitable for long-term storage of shelf stable food products includes a first substrate comprising a layer of ethylene vinyl alcohol copolymer and a layer of a polyamide; and a second substrate bonded to the first substrate and co... | 03/08/1988 |
| 4726997 | Chemically stabilized film In a multilayer flexible film suitable for medical solution packaging, film-derived extractables are controlled by the use of a small amount of a high molecular weight stabilizer in the outer layer of the film. Solution pH can be controlled by the additio... | 02/23/1988 |
| 4724185 | Oxygen barrier oriented film A coextruded multiple layer oriented film comprises a core layer of a blend of ethylene vinyl alcohol copolymer and polyamide, two intermediate adhesive layers, and two outer layers of a blend of linear low density polyethylene, linear medium density poly... | 02/09/1988 |
| 4719741 | Cross seal cooling for vertical form fill seal apparatus A method and apparatus for improving transverse seal strength in a vertical form-fill-seal machine includes directing a cooling medium on a just formed transverse seal from an area beneath and on either side of the film, in an arcuate pattern to effect co... | 01/19/1988 |
| 4709532 | Vertical form-fill seal process and machine with product catching device A vertical form, fill, and seal process and apparatus for individually packaging easily bruised articles of produce such as apples, pears, tomatoes, etc. by catching each article as it is dropped through a tube of thermoplastic, heat sealable film and sim... | 12/01/1987 |
| 4704843 | Apparatus and method for packaging articles Conventional horizontal form-fill-seal equipment for packaging articles such as cheese can be improved by the use of shrink barrier films. In conjunction with the use of such films, the improvement includes means for supporting the film prior to longitudi... | 11/10/1987 |
| 4698111 | Vinylidene chloride composition and film made therefrom This invention relates to films made from vinylidene chloride polymers or copolymers. Specifically, this invention relates to a method and composition for lowering the oxygen permeability and enhancing the thermal stability of mono-layer and multi-layer p... | 10/06/1987 |
| 4693372 | Taped bag chain with cassette A bag chain for feeding packaging bags to a bag loader includes bags 2a,2b,2c imbricated and carried by a pair of parallel carrier tapes 3 and 4 which are wound up on spools 8 and 9 of a cassette 5. Loading the bag chain is a bag indexing drive unit invol... | 09/15/1987 |
| 4687711 | Silent film for ostomy pouches This invention relates to films which have a high degree of silence and pliability and comprise at least one layer formed from a polymeric blend which includes about 40% to 60% by weight of any ethylene and vinyl-acetate copolymer and about 60% to 40% by ... | 08/18/1987 |
| 4686148 | Vinylidene chloride composition and film made therefrom This invention relates to films made from vinylidene chloride polymers or copolymers. Specifically, this invention relates to a method and composition for lowering the oxygen permeability and enhancing the thermal stability of mono-layer and multi-layer p... | 08/11/1987 |
| 4684573 | High oxygen barrier composite film High oxygen barrier characteristics over a wide range of humidity conditions are obtained by providing a combination of ethylene vinyl alcohol copolymer and vinylidene chloride copolymer in separate component films of a composite film.... | 08/04/1987 |
| 4680340 | Easy to open package and a method of making same A seal layer for an easy open package consisting essentially of 40% or less, by weight, of a first polymer having a melt flow index of less than 5 selected from the group consisting of ionomers and ethylene-vinyl acetate copolymers, and 60% or more by wei... | 07/14/1987 |
| 4671047 | Form-fill-seal machine A forming shoulder for an HFFS machine comprises a pair of side wires 3a and 3b each comprising an upper limb 11 joined to a lower limb 14 at an elbow 12 and each supported near a respective end of a support bar 16. The width of the tube, defined by side ... | 06/09/1987 |
| 4643943 | Multi-layer polyolefin shrink film A five layered thermoplastic film may be utilized to form storm windows or packaging material. A preferred embodiment of the film comprises a core layer consisting essentially of either (a) a copolymer of ethylene and vinyl acetate or (b) a three componen... | 02/17/1987 |
| 4643926 | Flexible medical solution pouches A flexible film suitable for medical solution pouches and parenteral materials generally includes a sealant layer of ethylene propylene copolymer, modified ethylene propylene copolymer, or flexible copolyester; one or more interior layers including elasto... | 02/17/1987 |
| 4640856 | Multi-layer packaging film and receptacles made therefrom Improved shrink, toughness and barrier properties are achieved by a multi-layer, thermoplastic, shrink film having a substrate layer of very low density polyethylene and a gas barrier layer of vinylidene chloride copolymer or ethylene-vinyl-alcohol. The f... | 02/03/1987 |
| 4638913 | Multiply package having delaminating easy open seal Disclosed is a package for cheese, luncheon meat and the like having an easy open seal. The package comprises a pouch-like receptacle constructed from flexible thermoplastic film having at least two layers wherein the outer surface layer has a tensile str... | 01/27/1987 |
| 4635295 | Taped bag with extended side seals The invention is directed to an improvement in flexible side-sealed taped bags having an extended lip rear panel. The external surface of the rear panel is releasably secured, at least at one point, to at least one tape (preferably two tapes) whereby a pl... | 01/06/1987 |
| 4616472 | Method and apparatus for loading side-seal bags A method and apparatus for automatically loading side seal bags, at least two at a time, which comprises delivering the bags to a first position below a rod conveyor which has a gap therein through which the bags are pulled and loaded in a second position... | 10/14/1986 |
| 4617241 | Linear polyethylene stretch/shrink films A multi-layered thermoplastic polyolefin film having an improved combination of physical characteristics is disclosed. In particular, the multi-layered film evidences an improved combination of elongation, elastic memory, tear resistance and heat shrinkab... | 10/14/1986 |
| 4612245 | Blown bubble process for producing oriented thin films The present invention comprises an improvement upon the blown bubble process for forming thin heat sealable films from an extruded tubular structure. The utilization of a spray nozzle, internal to the extruded tubular structure, to provide a thin inner co... | 09/16/1986 |
| 4611456 | Process for making a vacuum skin package and product formed thereby The invention relates to a method of forming containers useful in vacuum packaging applications which require that the packaged product be wrapped in an air-impervious enclosure. According to one aspect of the invention, the method comprises a step wherei... | 09/16/1986 |
| 4611728 | Bag dispensing package A package of imbricated bags is provided that is adapted for dispensing and opening such bags one at a time. The package includes a chain of adhesively imbricated bags in overlying sequence, each bag being adhesively but releasably attached to adjacent ba... | 09/16/1986 |
| 4608302 | Oriented films from propylene copolymers and unplasticized saran A heat-shrinkable thermoplastic film includes a food contact layer; a second layer of propylene homopolymer or copolymer, ethylene copolymer, butylene homopolymer or blends thereof; an adhesive layer; a layer of unplasticized vinylidene chloride copolymer... | 08/26/1986 |
| 4606922 | Cook-in meat packaging A method is provided for enhancing yield of a cook-in packaged meat product that includes first providing an adhering cook-in container including a flexible thermoplastic envelope being substantially conformable to a contained meat product and having an i... | 08/19/1986 |
| 4605460 | Method of laminating high barrier shrink film There is provided a heat shrinkable, high barrier laminate film which includes a hot blown, melt oriented high oxygen barrier film, of relatively high crystallinity and correspondingly relatively low ultimate elongation, laminated to a stretch oriented ba... | 08/12/1986 |
