Abstract: Disclosed is a film having antistatic characteristics and a method to make the film. The film comprises a blend of polyether block amide copolymer with an aromatic sulfonamide antistatic agent.

Abstract: Disclosed is a thermoplastic polymeric composition having antistatic characteristics and a method to make same. The composition comprises a thermoplastic polymer in admixture with an antistatic agent. In one embodiment the polymer is polyethylene and the agent is a mixture of polyethoxylated cetyl alcohol and glyceryl monostearate. Also disclosed is the antistatic polymeric composition in a film, which is useful for packaging static sensitive devices such as electronic circuit boards, or for packaging devices that must be protected from static electricity such as devices in a medical operating room where explosive oxygen and/or ether are present.

Abstract: A multi-layer highly moisture and gas permeable packaging film comprising a core layer of a butadiene-styrene copolymer with a styrene content of 60 to 80% by weight and at least two outer layers having heat sealable and gas permeability properties.

Abstract: A flexible film suitable for medical solution pouches and parenteral materials generally includes a core layer of high density polyethylene, two intermediate layers comprising very low density polyethylene, an outer layer comprising an ethylene propylene copolymer or flexible copolyester, a sealant layer comprising a heat sealable polymeric material such as modified ethylene propylene copolymer, and two polymeric adhesive layers bonding the intermediate layers to the outer and sealant layers respectively.

Abstract: Thermoplastic film is fed from a roll and pleated by passing the film across a series of rigid guides. As the film is drawn down across the guides, the film is pleated and then gathered onto a wind up roll. A J-shaped roll rack is preferably pneumatically activated to bring a fresh roll of film into a position for feeding the pleating arrangement.

Abstract: The present invention involves a method of making a multilayer film suitable for medical solution applications. Solution pH is controlled by the addition of a carbonate of an alkali metal to an ethylene ester or modified ethylene ester copolymer to form a blend, followed by the coextrusion of a core layer, first and second adhesive layers, and a sealant and outer layer to form a multilayer film having the blend in at least one of the adhesive layers. Alternatively, the blend may be present in the core layer.

Abstract: Disclosed is a thermoplastic polymeric composition having antistatic characteristics and a method to make same. The composition comprises a thermoplastic polymer in admixture with an antistatic agent. In one embodiment the polymer is nylon 12 and the agent is N-butyl benzenesulfonamide. Also disclosed is the antistatic polymeric composition in a film, which is useful for packaging static sensitive devices such as electronic circuit boards, or for packaging devices that must be protected from static electricity such as devices in a medical operating room where explosive oxygen and/or ether are present.

Abstract: A method for packaging a product includes the steps of placing the product on a first metallic sheet; placing a second metallic sheet over the product; placing the first sheet, product, and second sheet on a supporting member; applying a top web over the second sheet and in sealing arrangement with the supporting member, by a vacuum skin packaging process; and bringing the first and second sheet together to substantially enclose the product between the two sheets. Alternatively, a packet having a first metallic sheet, a product on the sheet, and a second metallic sheet disposed over the product is placed on a supporting member; a top web is placed over the packet by a vacuum skin packaging process; and the first and second sheets are brought together to substantially enclose the product between the sheets. In another embodiment, the product may be placed within a pouch which is then placed on a first sheet with a second sheet placed over the pouch.

Abstract: HB polymers, such as copolymers of hydroxy butyric acid and hydroxy valeric acid, are provided as melt extruded films having a thickness of 5 to 200 .mu.m. Sheet materials may consist of such a film or the film may be laminated with other films to increase strength or impermeability. The films are best made by co-extrusion with a thermoplastic that is substantially non-tacky upon solidification. The sheet materials are of particular value as diaper backsheets and ostomy bags. They may include a layer of non-woven material.

Abstract: A coextruded multiple layer film is oriented in primarily the longitudinal direction, and comprises a core layer comprising butadiene styrene copolymer or copolyester, outer layers comprising ethylene propylene copolymer, polypropylene, or blends thereof, and intermediate layers which bond the outer layers to the core layer and comprise an ethylene copolymer.

Abstract: In order to reduce splitting in a perforated, heat shrinkable, thermoplastic bags made from seamless tubing, rather than employ needle punched perforations, it has been discovered that slits cut by a knife blade will surprisingly reduce the splitting when a product, such as a meat product, is cooked within the bag.

Abstract: An easily opened package suitable for food products such as ring sausage and the like includes a first web with a sealant layer of ethylene vinyl acetate copolymer and an ionomer, and a second web including a sealant layer of an ionomer. A resulting package exhibits good self-welding characteristics and seal strength, and an easily peelable seal.

Abstract: Meat, especially pork, is cured by injection of saturated brine having microfine salt suspended therein. The method is especially advantageous when the meat is subsequently to be cured in a sealed plastic bag, and makes it possible to achieve salt contents not readily obtainable by other means.

Abstract: A blow-molded notebook binder provides protection from mechanical shock and abuse. When antistatic and/or conductive agents are blended into the polymeric material to make up the parison for the notebook binder, protection from electrostatic discharge is also provided. This invention finds special use in clean room environments.

Abstract: A pouch and a method and apparatus for forming an easy open pouch in a vertical form-fill-seal process wherein a pouch is formed from a sheet of thermoplastic film and a heat seal between pouches as they are filled serves as the top closure for the lower pouch and a bottom closure for the upper pouch, the easy open feature being provided by a U-shaped portion having a plurality of seal ribs, and a tear initiation notch.

Abstract: A first web having an ionomer, or ionomer/ethylene vinyl acetate copolymer (EVA) sealant layer, heat sealed to a second web having an EVA/ethylene butene copolymer (EBC)/polypropylene (PP) sealant layer, forms an easily opened package. A layer adjacent the sealant layer of the second web optionally includes PP or ethylene propylene copolymer. With this optional layer, the sealant layer of the first web may comprise a polymeric material which forms strong interweb adhesion upon heat sealing.

Abstract: Disclosed is a multiple-layer cook-in film from which packages such as bags or casings can be made. The films have a first food contact layer that bindingly adheres during cook-in to a contained meat product. The first layer comprises a polyamide composition, which is preferably (I) a polyamide or (II) a blend of a polyamide and (i) polyethylene, or a blend of a polyamide and (ii) a copolymer of an alpha-olefin having the formula RHC.dbd.CH.sub.2 wherein R is H or C.sub.1 to C.sub.8 alkyl and an alpha,beta-ethylenically unsaturated carboxylic acid.

Abstract: Disclosed is a heat-shrinkable, oriented, multi-layer packaging film. The film has at least two layers comprising EVA. One of the EVA layers is of EVA having a melt index different from the melt index of the EVA of the other layer or layers.

Abstract: A laminate useful in thermoforming and VSP processes comprises a surface film, barrier film, and sealant film bonded together by, for example, corona bonding. At least one of the films comprises a hot blown high molecular weight polymeric material. Preferably, at least one of the films is cross-linked by irradiation or chemical cross-linking.

Abstract: A blow molded container provides protection for electrically sensitive devices by including antistatic agents in the outer layer and electrically conductive agents in the inner layer of a multilayer parison used to form a container. The invention renders the use of separate antistatic foam pads unnecessary by providing an antistatic surface in the container when closed.