Abstract: Multilayered barrier structures comprising a gas barrier layer of a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas and a moisture barrier layer of a mesophase propylene-based material are provided. These structures are environmentally compatible and radiation resistant, and exhibit one or more additional properties, including gas barrier properties, moisture barrier properties, toughness, heat sealability, softness, and quietness during wrinkling. Also provided are methods of preparing and using such multilayered barrier structures, and articles, such as films, pouches, and tubings, formed from these structures, as well as multilayer barrier structures with additional graft layers affixed thereto through the application of a dose of ionizing radiation.

Abstract: The present invention relates to novel multi-layer coextruded thermoplastic stretch wrap films useful for the packaging or palletizing of goods. The films of this invention comprise at least three layers, the three layers having first and second outer layers and an intermediate layer positioned between the first and second outer layers, the first outer layer comprising about 70 to about 98 weight percent of a linear low density polyethylene and about 2 to about 30 weight percent of a low density polyethylene produced by high pressure polymerization, the intermediate layer comprising about 65 to about 85 weight percent of a linear low density polyethylene and about 15 to about 35 weight percent of a low density polyethylene produced by high pressure polymerization, and the second outer layer comprising about 90 to about 99 weight percent of a linear low density polyethylene and about 1 to about 10 weight percent of a low density polyethylene produced by high pressure polymerization.

Abstract: A rubber-rubber bonded composite structure is made up of one unvulcanized preform formed from a rubber comprising hydrogenated acrylonitrile-butadiene rubber, either a combination of methacrylic acid and zinc oxide or zinc methacrylate, and an organic peroxide and another unvulcanized preform formed from a rubber composition containing a rubber in common use, both preforms having been laminated together into an integrally bonded structure by vulcanization. The resulting structure exhibits good rubber-to-rubber adhesion.

Abstract: The present invention discloses preadhered, melt-spun, spin-drawn polyester filaments having improved adhesive properties towards rubber and processes for making the same. The process for making these filaments include the following steps:(a) spin-drawing polyester filaments at an up-take speed ranging between about 2,000 and about 6,000 meters per minute by using an integrated spin-drawing process; and(b) immediately after spin-drawing, applying to the polyester filament a composition which has simultaneously about 0.05 to about 0.5% by weight of a polyepoxide and about 5 to about 140 ppm of a tertiary amine with linear functional groups.The resulting polyester filament has a minimum adherence towards rubber in the Strip-test of about 16.0 to about 21.5 daN.

Abstract: A method of manufacturing a biaxially oriented heat-shrinkable food packaging film comprising a three component blend wherein the major constituents are a polyethylene, such as, VLDPE or LLDPE or a mixture thereof, EVA, and an ethylene alpha-olefin plastomer copolymer of a density below about 0.90 g/cm.sup.3.

Abstract: Monolayer and multilayer film structures having at least one layer of a polymer blend comprising at least one branched polymer (e.g., low density polyethylene (LDPE) or ethylene/vinyl actetate copolymer (EVA)) and at least one linear polyethylene (e.g., LLDPE) are disclosed. The film structures have a good overall balance of properties, including high ultimate elongation, excellent load retention and good machine direction tear. The films are especially useful for pallet wrapping applications.

Abstract: An improved biaxially oriented heat-shrinkable film of the type used for packaging food, such as poultry, processed meat, and fresh meat.

Abstract: A biaxially stretched film with very high heat shrink and puncture resistance properties, formed of low density ethylene alpha olefin copolymer having low melt index, low Mw/Mn, low melting point and low Young's Modulus.

Abstract: A thermoplastic resin film having a coated layer thereon, the coating layer comprising a quaternary ammonium salt copolymer comprising (a) a structural unit represented by formula (I): ##STR1## wherein A represents --O-- or --NH--; R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 represents an alkylene group having from 2 to 4 carbon atoms or --CH.sub.2 CH(OH)--CH.sub.2 --; R.sup.3, R.sup.4, R.sup.5, and R.sup.6, which may be the same or different, each represents an alkyl group having from 1 to 3 carbon atoms; R.sup.7 represents an alkyl group having from 1 to 10 carbon atoms or an aralkyl group having from 7 to 10 carbon atoms; n represents an integer of from 1 to 3; and X represents a chlorine atom, a bromine atom or an iodine atom, (b) a structural unit represented by formula (II): ##STR2## wherein R.sup.8 represents a hydrogen atom or a methyl group; and R.sup.

Abstract: There is a need for degradable films, particularily in agricultural mulch applications. The present invention provides for films having a controlled life from 30 to 160 days. The film comprises photodegradable sheet material having a thickness from 0.1 to 10, preferably, from 0.2 to 5, most preferably from 0.3 to 1.0, mils and comprising a polyolefin sheet and from 50 to 1,000 parts per million of cerium salt of a C.sub.16-20 fatty acid and from 1,000 to 20,000 parts per million of titanium dioxide having a particle size less than 0.05 microns.

Abstract: A laminated film including at least one first layer of a polymeric material which has a starchy matrix and is insoluble in water or at most expands in water, constituted by destructured starch and an olefinic copolymer and a second layer of a hydrophobic material adhering to the first. Applications are for the packaging of food products and for colostomy containers, for which a very effective barrier against gases and vapours is needed.

Abstract: A biaxially stretched oriented heat shrinkable film for food packaging comprising an EVOH-nylon 6,66 core layer, second and third intermediate adhesive layers, a self heat sealable fourth outer layer and an abuse-resistant fifth outer layer.

Abstract: According to the present invention, there is provided a thermoplastic elastomer laminate which comprisesa layer comprising a thermoplastic elastomer (A) composed of a crystalline polyolefin and a rubber, anda layer comprising an ultra-high molecular weight polyolefin (B) or an ultra-high molecular weight polyolefin composition.In addition, a glass run channel composed of the thermoplastic elastomer laminate is also provided in the invention.

Abstract: This invention provides a flame-retardant thermoplastic composition comprising a blend of ethylene copolymers, polyethylene, metal hydroxides and optionally a coupling agent and a compatibilizing agent, which is mildly cross-linked during blending with a peroxide and a polyfunctional compound. The composition has superior flame retardancy and a good balance of mechanical properties and electrical insulating properties, and maintains melt processibility for use as a sheath or insulation for wires and cables.

Abstract: A laminated, heat-sealable, three-layer film superior in sealability and difficult to burst even under a reduced pressure when sealed as a bag is provided.The laminated three-layer film is characterized in that a base layer (A) which is a biaxially oriented film formed of a crystalline polypropylene, a cushion layer (B) which is a film of an olefin polymer lower in melting point than the base layer (A), and a heat-sealing layer (C) which is an olefin polymer film, are laminated in the order of (A)/(B)/(C) and have surface orientation degrees falling under the following ranges, and that when the cushion layer (B) and the heat-sealing layer (C) are of the same composition, the degree of surface orientation of the cushion layer (B) is smaller than that of the heat-sealing layer (C):2.0.ltoreq.P.sub.A .ltoreq.15.00.ltoreq.P.sub.B .ltoreq.3.52.0.ltoreq.P.sub.C .ltoreq.4.0where,P.sub.A : degree of surface orientation of the base layer (A)P.sub.B : degree of surface orientation of the cushion layer (B)P.sub.

Abstract: The invention is a multilayer tire sidewall having an outer layer prepared from a blend of isomonoolefin/para-alkylstyrene copolymer and general purpose rubbers. The inner layer comprises general purpose rubber. The resulting sidewall exhibit good ozone resistance and fatigue crack resistance as well as a reduction in staining and discloration.

Abstract: A transparent, coextruded, multilayer polyolefin film which can be heat-sealed at low temperatures and comprises a base layer and at least one top layer applied on one side. The multilayer film has, at 120.degree. C., a longitudinal shrinkage of greater than about 10%, preferably from about 15% to about 35%, and a transverse shrinkage of greater than about 10%, preferably from about 15% to about 35%. The multilayer film has, at 90.degree. C., a longitudinal shrinkage of at most about 10%, preferably from about 3% to about 8%, and a transverse shrinkage of at most about 10%, preferably from about 2% to about 8%. The top layers have a minimum sealing temperature of at most about 124.degree. C., preferably from about 75.degree. C. to about 110.degree. C. The film is useful as a packaging film.

Abstract: This invention relates to a thermoformable laminate comprising a layer of polyolefin selected from the group consisting of homopolymers and copolymers of .alpha.-olefins having up to 8 carbon atoms, a layer of nitrile copolymer, and an adhesive layer interposed between the polyolefin layer and the nitrile copolymer layer.

Abstract: A rubber-rubber bonded composite structure is made up of one unvulcanized preform formed from a rubber comprising hydrogenated acrylonitrile-butadiene rubber, either a combination of methacrylic acid and zinc oxide or zinc methacrylate, and an organic peroxide and another unvulcanized preform formed from a rubber composition containing a rubber in common use both preforms having been laminated together into an integrally bonded structure by vulcanization. The resulting structure exhibits good rubber-to-rubber adhesion.

Abstract: A biaxially oriented multilayer film composed of a base layer and at least one outer layer. The base layer contains a propylene polymer. The outer layer contains two components A and B, the component A being composed of a high-density polyethylene (HDPE) and the component B of a copolymer of ethylene and propylene or ethylene and butylene or propylene and butylene or ethylene and another .alpha.-olefin containing 5 to 10 carbon atoms or propylene and another .alpha.-olefin containing 5 to 10 carbon atoms or of a terpolymer of ethylene and propylene and butylene or ethylene and propylene and another .alpha.-olefin containing 5 to 10 carbon atoms or of a mixture of two or more of the copolymers and/or terpolymers mentioned. The film has excellent properties and is useful, for example, as a packaging film, in a laminate, and as a backing film.