Patent
Heat sealable laminated propylene polymer packaging material
TLDR
In this article, the authors define an excellent seal packaging material, which comprises a base layer consisting of a stretched film made of a polymer composition comprising a propylene polymer, and a surface layer made of polymeric mixture comprising a polymer blend provided on at least one surface of the base layer.Abstract:
A packaging material having an excellent seal packaging property, which comprises (A) a base layer consisting of a stretched film made of a polymer composition comprising a propylene polymer and (B) a surface layer consisting of a stretched film made of a polymeric mixture comprising a polymer blend provided on at least one surface of said base layer, said polymer blend comprising a copolymer of ethylene and propylene and a copolymer of butene and any other polymerizable monomer having an ethylenic unsaturation in a weight proportion of 5:95 to 95:5.read more
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Patent
Miscible blend of polyolefin and polyolefin block copolymer
TL;DR: In this paper, a process for preparing the melt-miscible polyolefins is described, and a broad range of polyolefin blend compositions are defined, all of the blend compositions having at least one melting phase.
Patent
Biaxially and monoaxially oriented polypropylene cold seal release film
TL;DR: In this paper, the authors presented a new use for modified polypropylene films, wherein the films are cold sealable for heat sensitive packaging operations, and the film comprises a laminate having at least one cold seal release layer and a cold seal receptive layer.
Patent
Coated microwave heating sheet for packaging
TL;DR: In this paper, a microwave interactive layer is applied to the smoothed surface from a fluid or vapor state, which can comprise carbon, a semiconductive metal coating or other microwave interactive material.
Patent
Dulled stretched molding and process for producing the same
TL;DR: A heat shrinkable foamed molding having a density of not more than 0.85 and a heat shrinkability at 100°C of at least 10%, produced by melt-kneading and melt-extruding a blend composition comprising a crystalline propylene-α-olefin copolymer having a crystal melting point of at most 150°C and 5 to 40 wt.%, based on the copolym, of a hydrogenated cyclopentadiene type petroleum resin obtained by heat polymerization of a cyclopentaene fraction obtained by steam
Patent
Biaxially oriented polypropylene metallized white film
TL;DR: In this article, an oriented, polyolefin film with a white-opaque skin layer on one side of a core layer and a vacuum-deposition metal layer on the other side of the core layer is described.
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Patent
Coextruded heat sealable laminar thermoplastic films
TL;DR: In this article, thermoplastic films are provided which exhibit improved heat seal strengths as well as heat seal temperature ranges, the laminates comprise a predominantly propylene-based polymer substrate or core, the propylene core layer being coated with continuous skins, the skins being fabricated from ethylene based resin with a density of less than 0.939.
Patent
Packaging film comprising a blended self-welding layer
TL;DR: In this article, a self-welding packaging film made by blending at least two ethylene polymers, one of the polymers having a melt flow substantially greater than any of the other polymers in the blend, and thereafter extruding a film from the blend.
Patent
Biaxially stretched five-layer film for packaging food
TL;DR: In this article, a biaxially stretched five-layer film suitable for packaging fatty foodstuffs of irregular shape is disclosed, which has a first (outermost) layer made of an ionomer, an olefin homopolymer, an OE copolymer or a mixture of the oE homopolymers with the oLEF copolymers.
Patent
Laminar thermoplastic film constructions
TL;DR: In this paper, a layer of low density polyethylene bonded to a dissimilar polymer or blend of polymers is used for bag constructions, which are particularly suitable for bag construction.