Abstract: Monoaxially oriented polypropylene is coated with a pigmented polymer dispersion which imparts good print quality, ink adhesion, and smudge resistance to the ultimate biaxially oriented film.

Abstract: The use of anionic polysilicate microgels with an organic polymer to flocculate pulp and filler fines, such that water removal is easier and fines retention is greater and a new silicated cationic starch composition.

Abstract: Coextruded multilayer sheets comprising a first outer layer consisting of a blend containing polyvinylidene fluoride having an average mollecular weight (Mw) not higher than 250,000 and an acrylic resin and at least a layer of a homo or copolymer of an alkylmethacrylate, having a Vicat degree (49N, 50.degree. C/h) of at least 90.degree. C., in mixture with 5-40% by weight of an elastomer in the grafted form.

Abstract: Disclosed are biaxially oriented, coextruded multilayer barrier films wherein a substantial degree of oxygen impermeability is retained after orientation. The barrier layer of the films comprise a copolymer of vinylidene chloride and an alkyl acrylate, wherein the copolymer has a melting point about equal to or less than the melting point of the thermoplastic material comprising the outer layers of the film and has an oxygen permeability of less than 0.25 cc-mil/100 sq. in.-atm-day based upon the thickness of the barrier layer. Further disclosed are biaxially oriented nonshrinkable multilayer barrier films having barrier layers of a copolymer of vinylidene chloride and from more than 6 to about 10 weight percent methyl acrylate. Further disclosed is a process for making the biaxially oriented, coextruded barrier films.

Abstract: Packages containing articles with smooth surfaces can be prepared without entrapment of air between the packaging film and the smooth surface of the articles by selecting a packaging film having at least one surface which comprises a polymer which in film form exhibits a specular gloss of at least about 20, measured at an angle of 20 degrees and a synthetic amorphous silica having particle size of about 0.5 to about 50 micrometers.

Abstract: Compositions of matter, sheet material, and packages made therefrom. Novel compositions of polypropylene and high density polyethylene are useful as sealant materials for flexible sheet material structures wherein the sheet material is sealable to a preformed container, to form a lid therefor, and is peelable therefrom, with cohesive failure of the sealant layer in the area of the formed seal. The novel sealant layer compositions provided for package closure and sealing which is capable of withstanding retort conditions while maintaining the integrity of the package closure and seal. Concurrently the lid is readily peeled from the package to provide access to the interior of the package. The peelability comprises cohesive failure of the sealant material in a novel blend of a polypropylene polymer with an ethylene polymer having a density of at least 0.940.

Abstract: Polymeric, oriented films can be made by the use of a combination of a hot blown process and a blown bubble process. Styrene butadiene copolymer (SBC) forms two outer layers of the preferred embodiment, with a core layer of very low density polyethylene (VLDPE) or blends thereof, and intermediate polymeric adhesive layers such as ethylene vinyl acetate copolymer (EVA) bonding the core layer to the outer layers. A monoaxially or biaxially oriented film is produced with excellent optics.

Abstract: An innerliner for tubeless tires is comprised of at least one non-elastomeric barrier layer such as poly(vinylidene chloride) or ethylene--vinyl alcohol copolymer film with each barrier layer sandwiched between two layers of an elastomeric material adhering to the rubber stock employed in the carcass of the tire. The innerliner has the advantage of imparting equal or better air retention properties to the tire with a substantial reduction in the thickness and weight relative to conventional halobutyl rubber innerliners.

Abstract: A thermoplastic film is provided which is especially suited for use in stretch/cling applications such as, for example, the bundling, packaging and unitizing of foods and other goods. The film comprises a cling layer comprising (i) a polymer of at least ethylene and acrylate or vinyl acetate, blended with (ii) a compatible, non-migratory tackifier. The film may further comprise a non-cling layer comprising a thermoplastic material essentially free of tackifier, with or without an anticling (slip and/or antiblock) additive. Preferred thermoplastic materials include linear low density polyethylene and polypropylene.

Abstract: This invention is to provide a composite material for dielectric lens antennas which contains 3-70 percent by volume of a high dielectric constant ceramic and 30-97 percent by volume of a macromolecular material. At this time it is desirable that the mean particle diameter of the high dielectric constant ceramic is 1-50 .mu.m. It is also preferable that the macromolecular material is a thermoplastic macromolecular material. A dielectric lens is made of this composite material for the dielectric lens antennas. Further, the dielectric lens antenna is preferably produced forming a matching layer on the dielectric lens surface.

Abstract: A reactive oligoimide, which may serve as an adhesive for bonding at least one layer or film to another layer, preferably a flexible metallic layer to a flexible layer of a polyimide, in order to form a flexible multilayer metal-clad laminate.

Abstract: A coated color particle with extremely low susceptibility to decoloring is provided. The coated color particle comprises a colored core particle and a coating layer formed on the surface of the core particle, wherein the coating layer is formed by treatment of the core particle with an agent selected from the group consisting of silane compounds, silyl isocyanates, and organic titanium compounds.

Abstract: A metallized film combination of a polymer substrate at least one surface of which includes a maleic acid anhydride modified propylene homopolymer or copolymer, that at least one surface having a skin layer thereon of ethylene vinyl alcohol copolymer and said skin layer having an aluminum layer directly thereon.

Abstract: Pattern coloring material for synthetic resins, comprising particulate matter of a cross-linked olefin polymer containing pigment, which is useful as a material for producing synthetic resin molded products with colored patterns. The material is produced by kneading crosslinkable olefin polymer with pigment, granulating the kneaded mixture and subjecting the particulate matter thereby obtained to a cross-linking treatment.

Abstract: A stretch wrap multi-layer film having a sound dampening property wherein the sound dampening property is provided by a layer of ULDPE or LLDPE and high strength and puncture resistance are provided by a second layer containing a LLDPE. The neck in characteristic of linear polymers is overcome by blending into the second layer a minor amount of a non-linear LDPE.

Abstract: Plastic objects are exposed to a gas mixture containing fluorine and a gaseous oxidizing agent, to produce an extremely smooth surface on the objects. The oxidizing agent can be oxygen, and the object is preferably exposed to the gaseous mixture for about 10-30 seconds. The surface of the object treated according to the present invention is found to be considerably more smooth and glossy than objects treated with fluorine alone, without the oxidizing agent. The surface formed according to the present invention therefore minimizes the contact area between the treated object and the surrounding media.

Abstract: A thermoplastic film is provided which is especially suited for use in stretch/cling applications such as, for example, the bundling, packaging and unitizing of foods and other goods. The film comprises a cling layer comprising a polymer of at least ethylene and acrylate, preferably without a tackifying additive. The film further comprises a slip layer comprising a polyolefin preferably including an anticling (slip and/or antiblock) additive. Preferred polyolefins include linear low density polyethylene and polypropylene.

Abstract: The composite film contains individual layers of polyvinyl alcohol, a polyolefin, an ethylene/vinyl alcohol and a polyolefin in that order and is comparable in its barrier properties to water vapor and gas with composite films containing metal layers without having any of their disadvantages.

Abstract: Flexible, creased material in sheet or web form for use in the manufacture of liquid-tight packing containers of good dimensional rigidity comprises one or more base layers laminated to one another. The base layer is a mineral-filled thermoplastics material comprising between 50 and 80% calculated on the total weight of the mixture, of an inorganic, particulate mineral filler. The thermoplastics material is chosen among propylene-based polymers with a melt index of between 0.5 and 5 according to ASTM (2.16 kg, 230.degree. C.) and the base layer or base layers are provided with a pattern of crease lines which have been formed by plastic deformation in connection with or immediately after the extrusion of the base layer or base layers.

Abstract: A thermoplastic film is provided which is especially suited for use in stretch/cling applications such as, for example, the bundling, packaging and unitizing of foods and other goods. The film comprises a cling layer comprising (i) a non-cling polymer of at least ethylene and acrylate or vinyl acetate, blended with (ii) a compatible, non-migratory tackifier. The film may further comprise a non-cling layer comprising a polyolefin essentially free of tackifier, with or without an anticling (slip and/or antiblock) additive. Preferred polyolefins include linear low density polyethylene and polypropylene.