| Patent application number | Description | Published |
|---|
| 20080205800 | TRANSPARENT BIAXIALLY ORIENTED POLYPROPYLENE FILM WITH LOW MOISTURE VAPOR AND OXYGEN TRANSMISSION RATE - A laminate film comprising a polyetheramine resin-containing layer, an adhesion-promoting tie-layer, and a core layer comprising of high crystalline propylene homopolymer and crystalline Fischer-Tropsch wax with an optional amount of hydrocarbon resin which exhibits excellent transparency and oxygen and moisture barrier properties. The laminate film could further have additional layers such as a second polyolefin resin-containing layer, or combinations thereof. | 08-28-2008 |
| 20090045543 | METHOD OF MAKING BIAXIALLY ORIENTED POLYOLEFIN FILM FOR COLD SEAL APPLICATIONS - 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. | 02-19-2009 |
| 20090148713 | BIAXIALLY ORIENTED POLYLACTIC ACID FILM WITH HIGH BARRIER - 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. | 06-11-2009 |
| 20090311544 | METHOD TO PRODUCE MATTE AND OPAQUE BIAXIALLY ORIENTED POLYLACTIC ACID FILM - 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. | 12-17-2009 |
| 20100040904 | BIAXIALLY ORIENTED POLYLACTIC ACID FILM WITH HIGH BARRIER - A multilayer film including a first layer including a polylactic acid polymer, a second layer of a metal primer, deposited upon one surface of the first polylactic acid polymer layer, and a third metal layer deposited on the second metal primer layer. This metal-primed and metallized polylactic acid film exhibits improved moisture barrier properties versus a non-metal-primed and metallized polylactic acid film and can be used as part of a lamination structure for food packaging applications. | 02-18-2010 |
| 20100247886 | BIAXIALLY ORIENTED METALLIZED POLYLACTIC ACID FILM WITH HIGH METAL ADHESION AND HIGH BARRIER PROPERTIES - 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. | 09-30-2010 |
| 20100323196 | BIAXIALLY ORIENTED POLYLACTIC ACID FILM WITH IMPROVED HEAT SEAL PROPERTIES - 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). | 12-23-2010 |
| 20100330382 | BIAXIALLY ORIENTED POLYLACTIC ACID FILM WITH IMPROVED MOISTURE BARRIER - A biaxially oriented multilayer film comprising a skin layer of polyhydroxyalkanoate, a core layer of polylactic acid polymer and a sealant layer with a metal deposited upon one surface of the skin layer of polyhydroxyalkanoate polymer. This metallized, polyhydroxyalkanoate-coextruded polylactic acid film exhibits improved moisture barrier property versus a metallized, non-polyhydroxyalkanoate-coextruded polylactic acid film. | 12-30-2010 |
| 20110081543 | BIODEGRADABLE COMPOSITE BARRIER FILM - The present invention is directed to a multilayer film having, as its main component, a hydroxy acid polymer with improved gas barrier and optional heat sealability. The oriented film of predominately hydroxy acid polymer having controlled shrink can be produced by melting and coextruding a hydroxy acid polymer with a much thinner layer of an amorphous aromatic copolyester to form a multilayer film that is quench cooled, then biaxially stretched at a process temperature above the glass transition and below the cold crystallization temperature of the hydroxy acid polymer. A heat-setting treatment with a controlled relaxation of the film above the hydroxy acid polymer glass transition temperature and below its melt temperature may be used to control shrinkage. The films thus obtained are vacuum metallized on the aromatic copolyester surface to produce environmentally friendly packaging from predominately renewable resources having improved gas barrier properties. | 04-07-2011 |
