Abstract: Described are biaxially oriented polylactic acid (BOPLA) films with a novel formulation that exhibits a softer feel and quieter sound, without jeopardizing film making stability. The films can be used, for example, in packaging applications. The films can be metallized, or combined with barrier coatings or layers, for improved gas barrier properties particularly for moisture vapor transmission barrier desired in packaging applications. The films can also be printing films for packaging applications and may be transparent or matte in appearance. The films have characteristics that are beneficial to converting processes, are economical, and maintain bio-compostability similar to typical BOPLA films.

Abstract: Described are metallized biaxially oriented polylactic acid (BOPLA) films with a novel formulation that exhibits a softer feel and quieter sound, without jeopardizing film making stability. It has been found that when these films are metallized, moisture barrier properties are surprisingly improved compared to conventional metallized BOPLA films. Specifically, the moisture barrier of the films may be 2.0 g/m2/day or less at 38° C. and 90% relative humidity. The films can be used, for example, in packaging applications. The films have characteristics that are beneficial to converting processes, are economical, and maintain bio-compostability similar to typical BOPLA films.

Abstract: The present invention relates to methods of manufacturing multi-layered polyolefin films that provide excellent adhesion to cold seal cohesive formulations. A surface of the film is discharge-treated. It has been found that when the discharge-treated surface has at least 0.3% nitrogen functional groups, it provides an excellent cold seal receptive surface. A biaxially oriented polypropylene film made according the invention may also have a second skin layer, opposite the first layer, which may be used for metallizing, laminating, or printing.

Abstract: A metallized laminate film exhibiting improved moisture barrier property as well as maintaining a high bio-polymer content and degradability property is disclosed. The laminate film includes a first core layer of polylactic acid polymer and a second skin layer comprising a polyolefin metal receiving layer. The metal receiving layer or the core layer, or both, may be blended with an amount of polar-modified tie-resin to improve bonding. Alternatively, a discrete tie-resin layer may be interposed between the polyolefin metal receiving layer and the crystalline polylactic acid polymer core layer. The polyolefin metal receiving layer may be discharge-treated on the side opposite the core layer and metallized.

Abstract: Multi-layer biaxially oriented polylactic acid (BOPLA) film with a novel formulation improves the heat seal initiation temperature and heat seal performance of BOPLA films while maintaining good optical clarity. The film may include a core layer including polylactic acid base polymer resin, and a heat sealable layer including amorphous polylactic acid base polymer and a modifier comprising polycaprolactone or poly(butylene-adipate-co-butylene terephthalate).

Abstract: Metallized multi-layer biaxially oriented polylactic acid base polymer (BOPLA) films that exhibits improved barrier properties and metal adhesion. The films include a core layer including crystalline polylactic acid base polymer, a first skin layer consisting essentially of amorphous polylactic acid base polymer, and a metal layer on the first skin layer. The films may include a second skin layer consisting essentially of amorphous polylactic acid base polymer.

Abstract: A monoaxially oriented film including heat sealable layer including an ethylene-propylene impact copolymer and a metallocene-catalyzed propylene-butene elastomer. The heat sealable layer may include a metallocene-catalyzed ethylene-butene elastomer. The film is oriented at least 4 times in the machine direction and exhibits excellent linear directional tear properties in the machine direction and excellent heat seal performance. This film formulation and orientation is suitable for pouch applications requiring an “easy-tear” linear tear feature and excellent hermetic seal properties, particularly for retort pouches.

Abstract: A biaxially oriented laminate film including a core layer including a blend of crystalline polylactic acid polymer and a minority amount of polyolefin with a compatibilizing resin which is biaxially oriented such that a matte or opaque appearance is obtained. The laminate film may further have additional layers such as a heat sealable layer disposed on one side of the core layer including an amorphous polylactic acid resin and/or a polylactic acid resin-containing layer disposed on the side of the core layer opposite the heat sealable layer, a metal layer, or combinations thereof.

Abstract: A biaxially oriented laminate film including a core layer including a blend of crystalline polylactic acid polymer and an inorganic antiblock particle which is biaxially oriented at low transverse direction orientation temperatures to impart a degree of cavitation around the particles such that a matte or opaque appearance is obtained. The laminate film may further have additional layers such as a heat sealable layer disposed on one side of the core layer including an amorphous polylactic acid resin and/or a polylactic acid resin-containing layer disposed on the side of the core layer opposite the heat sealable layer, a metal layer, or combinations thereof.

Abstract: A metallized laminate film exhibiting improved moisture barrier property as well as maintaining a high bio-polymer content and degradability property is disclosed. The laminate film includes a first core layer of polylactic acid polymer and a second skin layer comprising a polyolefin metal receiving layer. The metal receiving layer or the core layer, or both, may be blended with an amount of polar-modified tie-resin to improve bonding. Alternatively, a discrete tie-resin layer may be interposed between the polyolefin metal receiving layer and the crystalline polylactic acid polymer core layer. The polyolefin metal receiving layer may be discharge-treated on the side opposite the core layer and metallized.

Abstract: A biaxially oriented laminate film including a first amorphous polylactic acid polymer heat sealable resin layer and a second core layer including a blend of crystalline polylactic acid polymer and 2-10 wt % of the core layer of an ethylene-acrylate copolymer. The laminate film, exhibiting the property to be transverse oriented in excess of 6 times its original width, typically 8 to 10 times its original width with excellent operability and relatively low haze, is disclosed. The laminate film may further have additional layers such as a third polylactic acid resin-containing layer disposed on the side of the core layer opposite the heat sealable layer, a metal layer, or combinations thereof.

Abstract: A laminate film including a first polyolefin heat sealable resin layer and a second core layer including of a blend of 5-15 wt % of a metallocene-catalyzed butene-propylene or ethylene-propylene thermoplastic elastomer or ethylene-propylene plastomer or blends thereof which exhibit an isothermal crystallization temperature of 60° C. or less and 95-85 wt % of a crystalline propylene homopolymer is disclosed. The laminate film may include additional layers such as a third polyolefin resin-containing layer disposed on the side of the core layer opposite the heat sealable layer, a metal layer, or combinations thereof.

Abstract: The present invention relates to methods of manufacturing multi-layered polyolefin films that provide excellent adhesion to cold seal cohesive formulations. A surface of the film is discharge-treated. It has been found that when the discharge-treated surface has at least 0.3% nitrogen functional groups, it provides an excellent cold seal receptive surface. A biaxially oriented polypropylene film made according the invention may also have a second skin layer, opposite the first layer, which may be used for metallizing, laminating, or printing.

Abstract: The invention relates to a high oxygen barrier, multilayer flexible packaging structure having a vacuum metallized, biaxially oriented polypropylene (met-BOPP) or metallized polyester (met-PET) film substrate; a high barrier EVOH layer coextruded or laminated directly on the metal-containing layer; and optionally an adjacent layer of anhydride modified polyolefin such as blend of LDPE, or MDPE, or PP and maleic anhydride modified adhesive resin on the EVOH layer.

Abstract: A polyolefin multilayer film containing a polyolefinic core layer and a first polyolefin skin layer of a blend, wherein the first polyolefin skin layer does not contain a thermoplastic or natural rubber and provides a cold seal receptive surface for a cold seal adhesive is disclosed. The blend includes an ethylene propylene random copolymer at 50-90 wt. % of the skin layer and metallocene catalyzed plastomer at 10-50% wt. % of the skin layer, a metallocene catalyzed isotactic polypropylene polymer or a butene propylene copolymer that contains from 5 wt % to 22 wt % of butene.

Abstract: A polyolefin multilayer film containing a polyolefinic core layer and a first polyolefin skin layer of a blend, wherein the first polyolefin skin layer does not contain a thermoplastic or natural rubber and provides a cold seal receptive surface for a cold seal adhesive is disclosed. The blend includes an ethylene propylene random copolymer at 50-90 wt. % of the skin layer and metallocene catalyzed plastomer at 10-50% wt. % of the skin layer, a metallocene catalyzed isotactic polypropylene polymer or a butene propylene copolymer that contains from 5 wt % to 22 wt % of butene.

Abstract: A polyolefin multilayer film containing a polyolefinic core layer and a first polyolefin skin layer of a blend, wherein the first polyolefin skin layer does not contain a thermoplastic or natural rubber and provides a cold seal receptive surface for a cold seal adhesive is disclosed. The blend includes an ethylene propylene random copolymer at 50-90 wt. % of the skin layer and metallocene catalyzed plastomer at 10-50% wt. % of the skin layer, a metallocene catalyzed isotactic polypropylene polymer or a butene propylene copolymer that contains from 5 wt % to 22 wt % of butene.

Abstract: A laminate film comprising a polymer core layer; a resin layer disposed on a surface of the polymer layer; and a metal layer deposited on a surface of said resin layer; wherein the laminate film has excellent adhesion between the resin layer and the metal layer and barrier durability is disclosed.

Abstract: The invention relates to a high oxygen barrier, multilayer flexible packaging structure having a vacuum metallized, biaxially oriented polypropylene (met-BOPP) or metallized polyester (met-PET) film substrate; a high barrier EVOH layer coextruded or laminated directly on the metal-containing layer; and optionally an adjacent layer of anhydride modified polyolefin such as blend of LDPE, or MDPE, or PP and maleic anhydride modified adhesive resin on the EVOH layer.

Abstract: A polyolefin multilayer film containing a polyolefinic core layer and a first polyolefin skin layer of a blend, wherein the first polyolefin skin layer does not contain a thermoplastic or natural rubber and provides a cold seal receptive surface for a cold seal adhesive is disclosed. The blend includes an ethylene propylene random copolymer at 50-90 wt. % of the skin layer and metallocene catalyzed plastomer at 10-50% wt. % of the skin layer, a metallocene catalyzed isotactic polypropylene polymer or a butene propylene copolymer that contains from 5 wt % to 22 wt % of butene.