Abstract: A multilayer structure with improved permeation for atmospheric diffusion of aromatic products wherein the structure comprises: a permeable membrane wherein said permeable membrane comprises at least two polymeric layers wherein the polymer of each layer is independently selected from the group consisting of polyethylene, very low density polyethylene, low density polyethylene, ethylene methylacrylate copolymer; a release layer wherein said release layer comprises a nylon polymer or a ethylene vinyl alcohol copolymer wherein the release layer is adhered to most inner polymeric layer of the permeable member which comprises the permeable membrane and wherein the adhesion between release layer and the adjacent layer of the polymeric permeable membrane is a relatively weak bond compared to the bond between the layers of the polymeric permeable membrane; and an impermeable membrane wherein said impermeable membrane comprises one or more layers wherein the materials which comprise the individual layers of the imper

Abstract: Film and sheet materials, and articles made therefrom, such as bags, pouches, trays, etc., comprise one or more layers of homogeneous alpha-olefin/vinyl aromatic copolymer, preferably an ethylene/styrene copolymer. The alpha-olefin/vinyl aromatic copolymer has properties which can provide a desired performance characteristics such as impact resistance, printability, RF sealability, free shrink, optics, high permeability, etc. The homogeneous alpha-olefin/vinyl aromatic copolymer may be present in a monolayer film, either alone or in a blend, or may be included in one or more layers of a multilayer film. Also included is a multilayer thermoformable article comprising a web having a film of such alpha-olefin/vinyl aromatic copolymers thereto.

Abstract: A co-layer stretch blow molding preform comprises an outer plastic preform and an inner plastic preform, wherein the inner plastic preform includes an infrared energy absorbing material which is absent from the outer plastic preform.

Abstract: This invention relates to a laminate substrate. An exemplary embodiment comprises a paperboard layer with a heat sealable layer secured substantially adjacent to one side of the paperboard layer. A co-extruded layer is secured substantially adjacent to the other side of the paperboard layer. The co-extruded layer has five layers: a heat sealable layer secured to the paperboard layer, a first tie layer secured adjacent to the heat sealable layer, a semi-crystalline nylon layer secured adjacent to the first tie layer, a second tie layer secured adjacent to the semi-crystalline nylon layer, and a heat sealable layer secured adjacent to the second tie layer. A fourth heat sealable layer is secured adjacent to the co-extruded layer.

Abstract: A composite article is provided which includes a fluoropolymer intimately bonded to a component including a substantially non-fluorinated thermoplastic having pendant phenolic groups in combination with a base. Increased adhesion is observed by a greater peel strength value between the fluoropolymer component and a non-fluorinated thermoplastic having pendant phenolic groups.

Abstract: A multilayer film suitable for cook-in end use includes an outer layer that includes a homo- or co-polymer of propylene and, directly adhered to the outer layer, a layer that includes at least one of: (a) an ethylene/alkyl acrylate copolymer having a high melting point, (b) propylene/&agr;-olefin copolymer having a lower propylene mer content than the outer layer and having a high Vicat softening point, and (c) an ethylene/vinyl acetate copolymer with at least 15% vinyl acetate mer content. The film exhibits good seal strength and good adhesion between the two layers, even in areas where the film is sealed, even after the film is oriented, even when the film is subjected to the elevated temperatures involved in cook-in procedures, and even where the film is subjected to, e.g., grease from fatty foods. The film also can include one or more other layers including, for example, bulk layers, O2-barrier layers, and/or abuse layers.

Abstract: The invention concerns packaging container produced from a composite shaped by cold-forming, the term “packaging containers” including base of lid parts or base and lid parts shaped by cold-forming. The base or lid parts can be shaped by cold-forming, and a lid film or base film, respectively, can form the corresponding closure for the packaging container. In addition, both the base and the lid part can be shaped by cold-forming, the depressions formed in the base and lid parts advantageously lying opposite one another.

Abstract: An improved masking film provides an adequate level of protection to relatively smooth surfaces by providing an adjustable and controlled level of adhesion between the masking film and the surface to be protected without the use of corona treatment or an adhesive under a variety of production and application conditions. The use of various copolymers, comonomers, and blends and percentages thereof, allows for control of the adhesion level produced between the improved masking film and the substrate surface to be protected. Using the improved masking film of the present invention, the masking film can be customized for a set of production conditions and desire application and will remain removably adhered to the substrate following a heat-loading process such as thermoforming, drape-forming or heat-bending.

Abstract: A water-soluble polyvinyl alcohol coating agent for a film contains from 3 to 19 mol % of &agr;-olefin units, wherein each said &agr;-olefin unit contains up to 4 carbon atoms. The polyvinyl alcohol coating agent can be coated on a polyolefin, a polyester or a polyamide substrate film to form a laminate film. A method for producing the laminate film comprises applying an aqueous solution of the coating agent to the substrate film, followed by drying the coating.

Abstract: A multilayer film suitable for cook-in end use includes an outer layer that includes a homo- or co-polymer of propylene and, directly adhered to the outer layer, a layer that includes at least one of: (a) an ethylene/alkyl acrylate copolymer having a high melting point, (b) propylene/&agr;-olefin copolymer having a lower propylene mer content than the outer layer and having a high Vicat softening point, and (c) an ethylene/vinyl acetate copolymer with at least 15% vinyl acetate mer content. The film exhibits good seal strength and good adhesion between the two layers, even in areas where the film is sealed, even after the film is oriented, even when the film is subjected to the elevated temperatures involved in cook-in procedures, and even where the film is subjected to, e.g., grease from fatty foods. The film also can include one or more other layers including, for example, bulk layers, O2-barrier layers, and/or abuse layers.

Abstract: A multi-layer heat resistant film laminate with good optical properties, extended shelflife, and memory characteristics and its method of manufacture, the laminate having the generalized structure of (outside) A/B/C/D/C/B/E (inside), where A is an outer moisture barrier layer, B is an intermediate adhesive layer, C is a polyamide layer D is an oxygen barrier layer, and E is a sealant layer.

Abstract: Extrusion coating structure in which at least one layer is made of a polymer composition comprising a multimodal ethylene polymer, which contains from 80 to 100% by weight of ethylene repeating u nits and from 0 to 20% by weight of C3-C10 alpha-olefin repeating units, has a density of between 0.920 and 0.960 kg/m3, and which is a blend of at least two different ethylene polymers.

Abstract: A composite membrane and method for making the same, comprising a porous support and a crosslinked polyamide surface having polyalkylene oxide groups grafted thereto. The subject membrane provides improved resistance to fouling while offering excellent flux and salt passage performance. The subject method is easily adapted to commercial scale-up and does not require the use of chemical initiators.

Abstract: A multi-layered laminate suitable for production of thermoformed packaging is disclosed. The laminate contains a polyamide-containing layer, a sealing layer and optionally an EVOH-containing layer and is characterized in that it contains water in an amount of 0.5 to 2.5 percent.

Abstract: The present invention relates to a heat sealable, unoriented multi-layer film consisting of a sequence of layers (I) comprising one or more plies on the outer side of the film, a sequence of layers (II) also comprising at least one ply, denoted the heat sealable layer, on the other outer side of the film, optionally together with a coupling sequence of layers (III), also of one or more plies, between the sequences of layers (I) and (II), wherein the multi-layer film is characterized in that the sequence of layers (I) contains at least one layer (i) of a linear alternating copolymer (1) of carbon monoxide and at least one ethylenically unsaturated olefin, optionally together with one or more layers (ii) containing polyamide, characterised in that the ratio between the thicknesses of the sequence of layers (I) and the total multi-layer film is no greater than 0.6 and no less than 0.

Abstract: The invention provides multilayered polymethylpentene-containing release films, processes for making the same and for their use in preparing articles comprises cured fiber reinforced epoxy, phenolic or polyacrylate compositions which file use as aerospace structural elements. The films have improved release properties when exposed to high temperatures. The films are non-oriented and multilayered comprising a polyamide layer, a polymethylpentene layer and an adhesive interlayer therebetween. The a polyamide layer has a heat stabilizer; and polyamide blend composed of from about 30% to about 80% of a nylon 6 polymer having a number average molecular weight of at least about 40,000; from about 10% to about 30% of a nylon 6,66 copolymer having a number average molecular weight of at least about 15,000; and from about 5% to about 40% of a nylon 6,12 copolymer having a number average molecular weight of at least about 10,000.

Abstract: A sealing film and a method of sealing the film to glass is disclosed. The film comprises a layer of ethylene vinyl alcohol (EVOH) or a laminate comprising an outermost ethylene vinyl alcohol (EVOH) layer for adhering to a glass surface, particularly the rim of a glass container, using heat and pressure. The laminate may include in addition to the EVOH layer an adhesive layer, polymeric layer, optional adhesive layer and stock layer. The film has excellent adhesive properties, is food safe and is suitable as a sealing material.

Abstract: A conductive polyamide resin composition containing 6-15 parts of conductive carbon black and 0.3-5 parts of secondary aromatic amines for 100 parts by weight of polyamide resins is excellent in formability and a tube manufactured using the composition is excellent in conductivity, heat-aging resistance and oxygenated-gasoline resistance as well.

Abstract: It is an object of the present invention to provide a highly durable photochromic film retaining a photochromic activity for a long time even when used under high temperture and high humidity conditions. A durable photochromic film comprising a coloring material layer containing a photochromic material and a phototransmissive deposition film laminated to said coloring material layer is disclosed.

Abstract: Conformable multilayer films having alternating layers of a stiff polymeric material and a flexible polymeric material are described.

Abstract: A multilayer heat-sealable chlorine-free film of relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film comprises an odor barrier layer of polyester resin and at least one heat-sealable skin layer, preferably two such skin layers on opposite sides of said odor barrier layer, composed of a homopolymer of ethylene or a copolymer of ethylene and an alpha-olefin or an ester-containing monomer. In a preferred embodiment, the odor barrier layer is formed of polyethylene terephthalate and adhesive tie layers are interposed between the odor barrier layer and the skin layers, resulting in a multilayer film of five layers. Pouches formed of such multilayer films are also disclosed.

Abstract: A sterilizable flexible pouch package includes a non-woven barrier web, a perforated plastic intermediate web, and an imperforate plastic upper web. Line heat seals bonding the webs from a cavity into which a sterilizing fluid may enter after passing through the barrier and intermediate webs. The line heat seal bonding the upper and intermediate webs is of the delamination failure type. An access opening is provided for insertion of an object to be sterilized into the cavity after which the access opening is sealed, enclosing the object in the cavity. After sterilizing, the package is opened by peeling apart the upper web from the intermediate web which causes a delamination failure of the line heat seal. Preferred materials enable steam sterilization at temperature of 270° F.

Abstract: A clear, multilayer polymeric film that is desirable for thermoforming applications. The film in its various embodiments include two inner layers of nylon and/or a core layer of ethylene vinyl alcohol or ethylene vinyl alcohol copolymer sandwiched between the two inner nylon layers. The film also has an outer layer of a heat sealable polymer and may also have an outer layer of nylon. The film is coextruded, blown into a tubular shape, oriented, and cooled by the method of tubular water quenching. The film has various improved physical properties over the prior art, including properties of “memory”, clarity, gloss and low haze.

Abstract: Disclosed are an easy-cleavage shrink laminate film which is harmless to the environment, easy to tear and moderately shrinkable, and a bag made of the laminate film. The easy-cleavage shrink laminate film 22 has a basic, two-layered structure composed of an easy-cleavage shrink film 19 and a sealant film 21, and may optionally comprise an additional sealant film 21 and/or a substrate film 25 to have a multi-layered structure. The easy-cleavage shrink film 19 comprises from 40 to 85 parts by weight of Ny 6 and from 15 to 60 parts by weight of MXD 6, and this is drawn at an orientation ratio of not smaller than 2.8 times both in the MD direction and in the TD direction and thermally fixed at a heat-treating temperature falling between 120 and 195° C. to thereby have a degree of shrinkage of from 15 to 40% when it is put in hot water at 120° C. under pressure of about 2.0 kg/cm2 for 20 minutes.

Abstract: A heat-shrinkable backseamed casing film comprises a first layer, a second layer, and a third layer, with the first and third layers being outer layers and the second layer being between the first layer and the third layer. The first outer layer serves as an inside casing layer, and comprises polyolefin; the second layer comprises polyester and/or polyamide; the third layer serves as an outside casing layer and comprises polyolefin, polystyrene, and/or polyamide. The second layer has a thickness of at least about 5% of a total thickness of the heat-shrinkable casing film. Alternatively, the first layer comprises polyolefin and has a surface energy level of less than about 34 dynes/cm; the second layer comprises a polyamide having a melting point of at least 300° F.; and the third layer comprises polyolefin, polystyrene and/or polyamide. A package comprises a cooked meat product within the backseamed casing.

Abstract: A laminating propylene/1-butene random copolymer composition comprising a propylene/1-butene random copolymer and a low-density polyethylene in a specified proportion. With respect to the propylene/1-butene random copolymer, the content of structural units derived from propylene, content of structural units derived from 1-butene, MFR, Mw/Mn and B-value as a parameter indicating the randomness of copolymer monomer chain distribution fall within specified ranges. With respect to the low-density polyethylene, the MFR and density fall within specified ranges. The invention also provides a composite film comprising a substrate film such as a crystalline polypropylene film and, laminated onto at least one side thereof, a resin layer of the above composition having a thickness of 2 to 200 &mgr;m. The above composition is excellent in laminate moldability and enables producing a composite film having excellent low-temperature sealing properties, blocking resistance and hot tack.

Abstract: Disclosed is a specific adhesive polyethylene composition comprising [1] a modified ethylene/&agr;-olefin copolymer resin or elastomer obtained by modifying a specific ethylene/&agr;-olefin copolymer resin or elastomer, each of which comprises ethylene and an &agr;-olefin of 3 to 20 carbon atoms, with an unsaturated carboxylic acid or anhydride, ester, amide, imide or metallic salt derivative of a unsaturated carboxylic acid thereof, [2] an unmodified ethylene/&agr;-olefin copolymer resin and/or an unmodified ethylene/&agr;-olefin copolymer elastomer and [3] a tackifier. Also disclosed is a multi-layer laminated film of 3 or more layers in which a layer of the above composition is interposed between an ethylene polymer layer and either a polyamide resin layer, an ethylene/vinyl alcohol copolymer layer or a layer of a mixture of polyamide resin and ethylene/vinyl alcohol copolymer.