The present invention provides an adhesive composition that shows good adhesion to a polyolefin resin substrate and a metal substrate, and good electrolyte solution resistance, and also exhibits excellent heat resistance. The present invention also provides a laminate including an adhesive layer comprising the adhesive composition, a packaging material using the laminate for which heat resistance and electrolyte solution resistance are required, and a packaging material for a lithium-ion battery comprising the laminate as a constituent member. The adhesive composition comprises an acid-modified polyolefin (A), an isocyanate curing agent (B), and an acid anhydride group-containing compound (C), the acid anhydride group-containing compound (C) being present in an amount of 0.1 parts by mass or more and 20 parts by mass or less based on 100 parts by mass of the acid-modified polyolefin (A).

The present disclosure relates to a multilayer composite that may include a first barrier layer and a first foam layer. The first foam layer may include a polyurethane-based matrix component, and a flame retardant filler component. The multilayer component may also have a HBF flammability rating as measured according to ASTM D4986.

Tear and heat resistant foams used in packaging, protective packaging bags and related methods are provided. The tear and heat resistant foam can include a nonwoven substrate, a polyethylene film, and a base layer of polyethylene foam joined together by applying at least one of heat or heat and pressure to the top nonwoven substrate, the polyethylene film and the polyethylene foam to heat the first surface of the top nonwoven substrate to a temperature that is above the melting point of polyethylene film but below the melting point of top nonwoven substrate. The temperature of the polyethylene film rises causing the polyethylene film to melt and bind the top nonwoven substrate to the polyethylene foam to form the heat and tear resistant packaging foam.

To provide a molded product, a metal-clad laminate and a printed wiring board, each of which contains a tetrafluoroethylene type polymer, whereby an decrease in electrical characteristics is inhibited and a hole can be easily bored with UV-YAG laser; and methods for their production. A molded product containing a tetrafluoroethylene type polymer, in which the content of components other than the tetrafluoroethylene type polymer is at most 0.9 mass %, and which has a wavelength range where the extinction coefficient becomes to be from 1.2 to 4.5 at from 200 to 380 nm; and a method for its production. A metal-clad laminate having a conductive metal layer and a layer of the molded product; and a method for its production. A printed wiring board provided with the metal-clad laminate and having through-holes in the thickness direction of the polymer layer.

The present invention is directed to an acoustic ceiling panel having a first major exposed surface opposite a second major exposed surface, the acoustic ceiling panel comprising: a first layer having an upper surface opposite a lower surface, the first layer comprising: a first body comprising a first major surface opposite a second major surface and a side surface extending between the first and second major surfaces, the first body being air-permeable; and a first attenuation coating applied to the first body; a second layer having an upper surface opposite a lower surface, the second layer comprising: a second body comprising a first major surface opposite a second major surface and a side surface extending between the first and second major surfaces, the second body being air-permeable; and a second attenuation coating applied to the second body; and an adhesive present between the first and second layers.

Disclosed is a preparation method for a copper clad laminate comprising: (1) dissolving a polymer in an organic solvent, heating and stirring to obtain a pre-impregnation liquid; (2) impregnating a liquid crystal polymer cloth in the pre-impregnation liquid, and drying to obtain a liquid crystal polymer impregnated cloth; and (3) laminating the liquid crystal polymer impregnated cloth and a copper foil to prepare the copper clad laminate, wherein the polymer in step (1) is at least one selected from the group consisting of fully aromatic polyesteramide, epoxy resin, and polyimide; and the liquid crystal polymer cloth in step (2) is prepared from a liquid crystal polymer having a melting point greater than 280° C., a dielectric constant less than 3.2, and a dielectric loss tangent angle less than 0.0025. The preparation method for the copper clad laminate has a simple preparation process and a low manufacturing cost.

A multilayer tube is provided which includes a layer including a specific aliphatic polyamide composition and a layer including a semi-aromatic polyamide composition including a semi-aromatic polyamide with a specific structure, these layers being adjacent to each other, wherein the aliphatic polyamide composition includes an aliphatic polyamide having a specific ratio of the number of methylene groups to the number of amide groups, a polyamide having a specific difference in absolute value of solubility parameter SP from the aliphatic polyamide, and an elastomer polymer including a structural unit derived from an unsaturated compound having a carboxyl group and/or an acid anhydride group.

A coated sheet metal strip includes a rolled sheet metal strip having a first flat side and a second flat side. A first layer over the first flat side includes a carrier layer. The carrier layer contains a reaction accelerator for an adhesive and stores the reaction accelerator on a physical basis. A second layer, including the adhesive, is applied over the second flat side. The second layer is free of the reaction accelerator or any reaction accelerator.

An electromagnetic wave shielding sheet according to the disclosure is configured by a protection layer, a metal layer, and a conductive adhesive layer. The metal layer has a plurality of openings, and an aperture ratio of the opening is 0.1%-20%. In addition, a tensile breaking strength of the electromagnetic wave shielding sheet is 10 N/20 mm-80 N/20 mm.

A method for making a layered structure without any defects, including a first support layer, a second support layer, and an adhesive intermediate layer interposed between the first layer and the second layer which is adapted to fix the layers on each other. The intermediate layer embeds operatively at least a three-dimensional macroscopic element being made of crystal glass or precious stones, and the intermediate layer is made of a thermoplastic resin having a melting temperature.