Abstract: Coated multilayer polyethylene films having improved sealability and barrier properties are provided. The films include a substrate which has been oriented in the machine direction to a degree of from about 5:1 to about 8:1 and in the direction transverse to the machine direction to a degree of from about 6:1 to about 15:1, and a coating selected from the group including polyvinylidene chloride, low temperature seal coating, polyvinyl alcohol polymer and acrylic coating. The substrate has a high density polyethylene base layer and at least a first skin layer adhered to a first side of the base layer.

Abstract: The present invention relates to a matte surface film comprising: (a) a base layer comprising a polyolefin; and (b) a matte surface layer comprising a blend of a non-hydrocarbon polymer with at least one incompatible polyolefin, wherein said non-hydrocarbon polymer includes monomeric units with polar functional groups. The film may be used for packaging and label applications.

Abstract: A laminated multilayer film substrate for use in the production of banknotes having an oriented polypropylene core layer and at least one high density polyethylene layer on each side of the oriented polypropylene layer. The core layer contains microcavities formed by the addition of a cavitating agent. The resultant films exhibit good embossability, dead-fold characteristics and other properties, making them highly suited for the production of bank notes and other security documents.

Abstract: An oriented multilayer film comprises: (a) a base layer containing a thermoplastic polymer; (b) at least one tie layer; and (c) at least one outer layer containing a metallocene catalyzed polyethylene chosen for its performance as an adhesion layer and having improved processability. The multilayer films are useful for various end uses including printing, metallization, adhesive lamination, and cold sealing.

Abstract: The present invention is a high barrier multilayer film particularly suitable for packaging. The high barrier multilayer film is a film including (a) a core substrate layer having an isotactic polypropylene produced from Ziegler-Natta catalysts, and (b) an adjacent layer on at least one surface of the core substrate layer, wherein the adjacent layer (b) comprises an isotactic polypropylene produced from metallocene catalysts; or the high barrier multilayer film includes (a′) a core substrate layer having an isotactic polypropylene produced from metallocene catalysts, and (b′) an adjacent layer on at east one surface of the core substrate layer, wherein the adjacent layer (b′) comprises an isotactic polypropylene produced from Ziegler-Natta catalysts.

Abstract: A heat-sealable multilayer film comprising: (a) an upper heat-sealable layer comprising (I) an ethylene polymer, copolymer, or terpolymer and (ii) a particulate, crosslinked hydrocarbyl-substituted polysiloxane having a mean particle size of from about 0.5 &mgr;m to about 20.0 &mgr;m, as a combined slip agent and antiblocking agent; (b) an intermediate core layer comprising a propylene polymer; and (c) a lower heat-sealable layer consisting essentially of (I) an ethylene polymer, copolymer, or terpolymer, (ii) a particulate, crosslinked hydrocarbyl-substituted polysiloxane having a mean particle size of from about 0.5 &mgr;m to about 20.0 &mgr;m, as a combined slip agent and antiblocking agent; and (iii) from about 0.15 wt% to about 1.5 wt% of a liquid, hydrocarbyl-substituted polysiloxane. The upper heat-sealable sealable layer does not contain a liquid polysiloxane, but may have a coating of liquid polysiloxane transferred from the lower heat-sealable layer.

Abstract: A sealable film comprises: (a) an inner layer comprising an olefin polymer; (b) a sealing layer; and (c) a separable layer positioned between the inner layer and the sealing layer, the separable layer comprising (1) ethylene-propylene block copolymer or (2) a blend of polyethylene and another olefin which is incompatible with the polyethylene, specifically either (i) polypropylene homopolymer or (ii) ethylene-propylene block copolymer. Methods of making the sealable film are described.

Abstract: An improved PVOH-based coating solution for application to a polymeric substrate. The coating solution includes poly(vinyl alcohol), a formaldehyde-containing crosslinking agent and a crosslinking-promoting acid catalyst which lowers the pH of the solution to about 3.5 or less and, preferably, to about 3 or less. The coating solution exhibits improved viscosity stability, particularly with the addition of a second acid catalyst. The coating solution also provides improved crosslinking and oxygen barrier characteristics upon drying.

Abstract: A skin layer of a thermoplastic polymer includes an additive to promote metal adhesion to the surface of this layer. This additive is one or more compounds of the formula, R-X, where R is an aliphatic hydrocarbyl group having an average of from 20 to 200 carbon atoms and X is a polar group, such as —COOH or —CH2OH. The film may be biaxially oriented and include a polypropylene core layer. The film may be metallized with an appropriate metal, such as aluminum. A heat sealable skin layer may be provided on the opposite side of the film from the metallizable skin layer.

Abstract: Readily castable high density polyethylene (HDPE) films, preferably containing broad molecular weight distribution HDPE resin having treated upper skin layers and untreated lower skin layers, preferably coextruded, on each side, wherein a particulate cross-linked hydrocarbyl-substituted polysiloxane is present in the untreated lower skin layer to reduce coefficient of friction and enhance machinability. The treated upper skin layer is derived from a polymer, e.g., ethylene-propylene-butene-1 terpolymer, and the lower skin layer is derived from a polymer such as ethylene-propylene-butene-1 terpolymer and LDPE compounded with silicone oil.

Abstract: A multi-layer film includes a base layer comprising a polyolefin and at least one additional layer comprising a metallocene-catalyzed syndiotactic polypropylene, wherein the base layer and the at least one additional layer comprising a metallocene-catalyzed syndiotactic polypropylene are not suitable for use as a heat sealable film. The multi-layer films of the present invention have improved metallizable surfaces and the metallized films exhibit excellent gas (e.g., oxygen and water vapor) barrier properties, as well as good pick off, optical properties (optical density, haze, and gloss), and coefficient of friction (COF).

Abstract: A cast film comprises a layer comprising a metallocene-catalyzed substantially syndiotactic propylene polymer. Optionally, the cast film has on at least one side an outer skin layer.

Abstract: An embossed, cast polyolefin film or an embossed, oriented polyolefin film comprises: (a) a core layer comprising a propylene polymer; (b) an embossed outer layer on one side of the core layer, the embossed outer layer comprising an olefin polymer capable of being embossed; and (c) an additional outer layer on a side of the core layer opposite to the embossed outer layer, the additional outer layer comprising an olefin polymer. The embossed film can then be metallized to produce a shiny, metallic film having a prismatic or holographic appearance.

Abstract: The present invention relates to a biaxially oriented multilayer film structure having (i) a core substrate of high density polyethylene; and (ii) an additional layer of syndiotactic polypropylene on at least one surface of the core substrate. Optionally, the film of the present invention includes at least one heat sealable layer on the outer surface of the additional layer.

Abstract: A coating for a polyolefin film is made from an acrylic polymer or ionomer resin and an ink receptive particulate such as a molecular sieve and/or a carbohydrate polymer such as cellulose, carboxymethyl cellulose or corn starch. The coating composition facilitates adhesion of ink to the polyolefin film.

Abstract: The invention discloses an ink-based-image-bearing substrate. This substrate includes a coextruded thermoplastic film having at least one layer made from a polymer derived from polypropylene and another layer made from an acidic functional group-bearing polymer. The layer which includes the polymer derived from the polypropylene is oriented in at least the machine direction. The layer which includes the acidic function group-bearing polymer is the print-receiving layer. The acidic functional group bearing-polymer is preferably ethylene-acrylic acid or ethylene-methacrylic acid, and the acidic functional group-bearing polymer-containing layer has a softening point in a range of 180° to 220° F. Liquid toner ink is electrostatically printed on the layer which includes the acidic functional group-bearing polymer. Additionally, the invention includes a method for providing the ink-based-image-bearing substrate.

Abstract: A multi-layer film has an improved composite structure for providing hermetic seals to packages manufactured in high speed packaging apparatus. The structure of the multi-layer film includes layers A/B/C/D. Skin layer A is formed from polypropylene copolymer with melt flow rate greater than one or linear high density polyethylene with melt index greater than one. Core layer B is formed from polypropylene. Intermediate layer C has the primary function of compliance during sealing, and sealing layer D has the primary function of providing adhesivity to the completed seal.

Abstract: The present invention relates to a matte surface film comprising: (a) a base layer comprising high density polyethylene (HDPE); and (b) a matte surface layer comprising a blend of two or more incompatible polyolefins. In preferred embodiments, the matte surface layer comprises (i) a propylene homopolymer or propylene interpolymer and (ii) an ethylene homopolymer or ethylene interpolymer. The film possesses easy and improved cuttability and may be used for packaging and label applications.

Abstract: The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated, functionalized, optionally modified, and post treated. The dispersant substances include a copolymer of two different conjugated dienes. The polymers are selectively hydrogenated to produce polymers which have highly controlled amounts of unsaturation, permitting highly selective functionalization. The polymers may be blended with lower molecular weight components. Also provided are lubricant fluids, such as mineral and synthetic oils, which have been modified in their dispersancy and/or viscometric properties by means of the dispersant substances of the invention. The addition of minor amounts of lower molecular weight components improves compatibility and reduces haze. Also provided are methods of modifying the dispersancy and/or viscometric properties of lubricating fluids such as mineral and synthetic lubricating oils.

Abstract: A multi layer film having enhanced barrier properties with respect to oxygen and water vapor transmission as well as an excellent surface for film laminating, printing and coating processes is provided. The multi layer film includes a polyolefin core layer having a wax therein, a first surface layer including a polyolefin copolymer or terpolymer layer, and a second surface layer including a polar layer having ester functionality. Multi layer films according to the present invention are particularly useful as packaging films for food products, and are particularly well suited for subsequent laminating, printing or coating operations.