B29L9/00

Biaxially oriented polypropylene film with improved breakdown strength

The present invention is directed to a biaxially oriented polypropylene (BOPP) film with improved breakdown strength and to a capacitor comprising an insulation film comprising a layer of the biaxially oriented polypropylene film of the present invention. The present invention is further directed to a process for producing a biaxially oriented polypropylene film. Finally, the present invention is further directed to the use of a biaxially oriented polypropylene film of the present invention as layer of an insulation film of a capacitor. The BOPP film comprises a polypropylene composition, wherein the polypropylene composition comprises a high isotactic homopolymer of propylene and a polymeric -nucleating agent. The BOPP film has a dielectric breakdown field strength Eb63.2 of at least 595 kV/mm. The process for producing a biaxially oriented polypropylene film comprises the steps of extruding a polypropylene composition to a flat film and orienting the flat film simultaneously in the machine direction and in the transverse direction.

Multilayer assemblies with surface depressions and methods of producing and using them
11858221 · 2024-01-02 · ·

Certain configurations of multilayer assemblies are described. In certain embodiments, the multilayer assembly can include a core layer, a skin layer and one or more depressions in a surface of the multilayer assembly. In other configurations, the multilayer assembly can include a core layer, a skin layer, one or more depressions in a surface of the multilayer assembly and one or more additional layers.

Machine and method for forming articles
11865760 · 2024-01-09 · ·

A machine and method of forming an article generally comprising extruding a molten bead of thermoplastic material along x, y and z axes in forming an article consisting of a strata of such material, and passing a roller over each applied portion of such molten bead to compress such bead portion, enhancing the fusion of engaging plies of such extruded material.

Method for preparing multi-layer optical laminates

Methods for preparing multi-layer optical laminates include placing an optical film that is free form an adhesive layer between first and second glass substrates that are free of an adhesive layer, placing this laminate under vacuum, and then heating the laminate under pressure to a temperature above the softening temperature of the optical film. The glass substrates are free of an adhesive layer but may include a silane surface treatment. The resulting multi-layer laminate is optically clear and does not show scattering of reflected light by the optical film.

Multilayer composite composition, its manufacturing process, and article obtained thereof

The present invention relates to a multilayer composition comprising a surface layer comprising a thermoplastic polymer A and a substrate layer comprising a polymeric composite material based thermoplastic (meth)acrylic matrix and a fibrous material as reinforcement. The multilayer composition is suitable for mechanical or structured parts or articles with a decorative surface aspect The present invention concerns also a manufacturing process for multilayer mechanical or structured parts or articles and three-dimensional mechanical or structured parts.

Multi-layer polymer foam film for packaging applications and the method of making the same

A multilayer foam film suitable for direct and non-direct food contact and aseptic packaging application is disclosed.

Container and structure
11964794 · 2024-04-23 · ·

A container capable of suppressing the unexpected opening of a pair of upper walls including a first side wall and a second side wall facing each other; a third side wall provided therebetween; a first upper wall and a second upper wall; and a locking member. The first side wall and the second side wall face each other. The first upper wall and the second upper wall are configured to be rotatable with respect to the first side wall and the second side wall, respectively. The locking member includes a fixed portion and an engagement portion, the fixed portion being fixed to the third side wall, the engagement portion being engaged with at least one of the first upper wall and the second upper wall to prevent the first upper wall and the second upper wall from opening.

Cationic polymerizable compositions and methods of use thereof

An inkjet printing method and inkjet compositions are disclosed. The method includes selectively depositing by inkjet printing, layer by layer, a first composition and a second composition onto a receiving media from different dispensers to form polymerizable deposited layers. The first composition includes one or more free-radical polymerizable compounds and a cationic photoinitiator and is devoid of compounds able to undergo cationic photopolymerization within the first composition. The second composition includes one or more cationic polymerizable compounds and is devoid of cationic photoinitiators. At least one of the compositions includes a radical photoinitiator. The method further includes exposing the deposited layers to actinic radiation to initiate polymerization of the free-radical polymerizable compounds and the cationic polymerizable compounds within the deposited layers.

Film to hold a metal layer, metallic decorative sheet intermediate product, metallic decorative sheet, extruded laminate product, metallic molded product, injection molded product, method for producing a metallic molded product, method for producing injection molded product, and method for producing an extruded laminate product

An objective of the present invention is to provide a film to hold a metal layer, a metallic decorative sheet intermediate product, a metallic decorative sheet, a metallic molded product, and a method for producing a metallic molded product which prevent the occurrence of the whitening phenomena or the like of the metallic molded product which occur during production of the metallic molded products by using a metallic decorative sheet, as well as enables molding in a wider temperature range. A film to hold a metal layer comprises a thermoplastic resin having a melting point of 230? C. to 250? C. is provided, wherein the film to hold a metal layer has transparency.

Resin-based composite material of three-layer structure and use thereof
11987014 · 2024-05-21 · ·

This invention disclosed a resin-based composite material has a three-layer structure and the application thereof. According to the invention, an oriented carbon nanotube bundle/epoxy resin composite material (denoted as layer B) is prepared with the microwave curing method, a barium titanate nanofiber/epoxy resin composite material (denoted as layer E) is prepared by means of a blade coating-heat curing method, and a composite material of a B-E-B three layer structural is formed by means of a layer-by-layer curing technology. Compared to the composite material of the conductor-insulating layer/polymer layer structural prepared in the prior art, the resin-based composite material has a three-layer structure provided by the invention has with high energy storage density, and low dielectric loss and high permittivity; and the preparation process therefor is controllable and easy to operate, short in production cycle, and suitable for large-scale application.