Patent classifications
B32B23/08
Polyurethane adhesive with chemical resistant
There is provided a pressure sensitive adhesive composition comprising a polyurethane polymer that comprises the reaction product of a polyisocyanate component and a polyol component. The polyol component has a hydrophilic-lipophilic balance (HLB) less than 10. The polyurethane further comprises 0.5 to 10 wt.-% of hydrophilic polymerized units having an HLB greater than 12, such as a reaction product of a polyethylene glycol polymer. In another embodiment, the polyurethane further comprises pendent ethylenically unsaturated groups. Also described are articles such as laminating tapes and protective films as well as methods of bonding substrates with the pressure sensitive adhesive and laminating tape.
Tearable film laminate made with cellulose acetate for packaging and container purposes
A polymeric laminate film structure having a cellulose acetate film, and optionally blended with foil and a sealant layer.
Tearable film laminate made with cellulose acetate for packaging and container purposes
A polymeric laminate film structure having a cellulose acetate film, and optionally blended with foil and a sealant layer.
DEGRADABLE CONTAINMENT FEATURES
A degradable containment includes an outer structural layer constructed of a pulp material, a central carrier layer constructed of a biopolymer, and an interior nanomaterial layer constructed of a nanomaterial.
DEGRADABLE CONTAINMENT FEATURES
A degradable containment includes an outer structural layer constructed of a pulp material, a central carrier layer constructed of a biopolymer, and an interior nanomaterial layer constructed of a nanomaterial.
Laminated packaging material, packaging containers manufactured therefrom
The present invention relates to a method for manufacturing of a laminated cellulose-based liquid or semi-liquid food packaging material, wherein the laminated packaging material has a bulk material layer of paper, paperboard or other cellulose-based material, an innermost, heat sealable and liquid-tight layer of a thermoplastic polymer, the innermost polymer layer intended to be in direct contact with the packaged food product, a barrier layer laminated between the bulk layer and the innermost layer. The invention further relates the laminated packaging materials obtained by the method and to a packaging container for liquid food packaging, comprising the laminated packaging material or being made from the laminated packaging material obtained by the method.
Laminated packaging material, packaging containers manufactured therefrom
The present invention relates to a method for manufacturing of a laminated cellulose-based liquid or semi-liquid food packaging material, wherein the laminated packaging material has a bulk material layer of paper, paperboard or other cellulose-based material, an innermost, heat sealable and liquid-tight layer of a thermoplastic polymer, the innermost polymer layer intended to be in direct contact with the packaged food product, a barrier layer laminated between the bulk layer and the innermost layer. The invention further relates the laminated packaging materials obtained by the method and to a packaging container for liquid food packaging, comprising the laminated packaging material or being made from the laminated packaging material obtained by the method.
Method for producing multilayer film
Embodiments provide a method for producing a multilayer film, the method including: (A) a step for continuously coextruding from a T die (3) a molten film (4) of a multilayer film in which a first acrylic resin layer (α1), an aromatic polycarbonate resin layer (β), and a second acrylic resin layer (α2) are directly laminated in the stated order using a coextrusion apparatus; (B) a step for feeding and pressing the molten film of the multilayer film between a first mirror surface body (5) that rotates or revolves and a second mirror surface body (6) that rotates or revolves so that the first acrylic resin layer (α1) is disposed on the first-mirror-surface-body side; and (C) a step for holding the pressed multilayer film against the first mirror surface body and sends the pressed multilayer film to the subsequent third mirror surface body (8) that rotates or revolves, where TR1 (surface temperature of first mirror surface body), TR2 (surface temperature of second mirror surface body), Tα1 (glass transition temperature of first acrylic resin), Tα2 (glass transition temperature of second acrylic resin), and Tβ (glass transition temperature of aromatic polycarbonate resin) satisfy a prescribed relationship.
ARTICLE COMPRISING MULTIPLE MATERIAL LAYERS WITH REDUCED THICKNESS
Proposed is an apparatus and method for creating a formed article comprised of at least one layer of thermoplastic and at least one layer of cellulose fibers to create a composite article. The formed article may additionally be compressed to further reduce its thickness and improve its look and feel as well as mechanical properties.
ARTICLE COMPRISING MULTIPLE MATERIAL LAYERS WITH REDUCED THICKNESS
Proposed is an apparatus and method for creating a formed article comprised of at least one layer of thermoplastic and at least one layer of cellulose fibers to create a composite article. The formed article may additionally be compressed to further reduce its thickness and improve its look and feel as well as mechanical properties.