A composite article comprises a base layer and an adhesive layer disposed thereon. The base layer comprises the reaction product of a polyamide and an anhydride-functional copolymer, and an ionomer. The adhesive layer comprises a cationic polymer and an adhesive.

A barrier tape comprises a barrier section comprising one or more barrier layers and one or more adhesive layers adhered to a face of the barrier section. The barrier tape can be used to join together adjacent barrier sheets or to patch a breach in a barrier sheet to form a barrier assembly.

A polyolefin bonding adhesive film includes a support base layer and a bonding adhesive layer formed on a side surface of the support base layer by co-extrusion. The support base layer is a polypropylene film. The bonding adhesive layer is formed of a first polyolefin copolymer modified by maleic anhydride. The first polyolefin copolymer is formed by copolymerization of at least two kinds of C2 to C4 olefin molecules, a first graft ratio of the maleic anhydride grafted onto the first polyolefin copolymer is between 0.5% and 5%, and a first melt index of the first polyolefin copolymer is between 3 g/10 min and 5 g/10 min.

Disclosed is a coating material comprising 100 parts by mass of an acid-modified polypropylene (A) and at least 450 parts by mass of organic solvents (B), wherein the acid-modified polypropylene has a melting point of 90? C. or lower and the organic solvents (B) comprises 80-99 mass % aromatic hydrocarbon solvent (B1) and 20-1 mass % one or more solvents (B2) selected from the group consisting of ester-based solvents, ketone-based solvents, and alcohol-based solvents, the sum of the proportion of the ingredient (B1) and the proportion of the ingredient (B2) being 100 mass %. The coating material may further contain a compound (C) having, in the molecule, two or more functional groups capable of forming a chemical bond with a carboxyl group, in an amount of 0.1-20 parts by mass. The compound (C) having, in the molecule, two or more functional groups capable of forming a chemical bond with a carboxyl group may be one having no hydrolyzable group. Also disclosed are: a coating film formed from the coating material; a layered product comprising the coating film and a substrate film; and a flexible flat cable including the layered product.

Polylactic acid film or sheet having tear strength so as not to break or tear during, for example, production or processing of the film or sheet or winding thereof into a roll, and causing neither melt nor deformation at high temperatures more than 100 C. In the polylactic acid film or sheet, the tear strength is not less than 100 N/mm when the film or sheet is torn at least in a flow direction (MD), a rate of dimensional change due to heating is not more than 3% in the flow direction (MD) and a transverse direction (TD), and a rate of dimensional change due to loaded heating is not more than 3% in the flow direction (MD).

A barrier tape comprises a barrier section comprising one or more barrier layers and one or more adhesive layers adhered to a face of the barrier section. The barrier tape can be used to join together adjacent barrier sheets or to patch a breach in a barrier sheet to form a barrier assembly.

A composite article comprises a base layer and an adhesive layer disposed thereon. The base layer comprises the reaction product of a polyamide and an anhydride-functional copolymer, and an ionomer. The adhesive layer comprises a cationic polymer and an adhesive.

The present invention relates to an inflation film and a method for manufacturing the inflation film, wherein the inflation film includes a base film, including: a polyamide-based resin; a copolymer containing polyamide-based segments and poly-ether-based segments; and an olefin-based polymer compound, and has a small variation in physical properties between a machine direction (MD) and a transverse direction (TD) of the film.

An adhesive sheet for laser dicing is provided that is capable of, in laser dicing by irradiation with laser light through the adhesive sheet, suppressing laser light scattering in the adhesive sheet while allowing easy chip division by expanding the adhesive sheet and enables inhibition of dust attachment during chip division for chip production in high yields. The present invention provides an adhesive sheet for laser dicing, including a substrate film having a back layer containing a friction reducing agent and an antistatic agent on one surface and having an adhesive layer on another surface, wherein the back layer has a surface with arithmetic mean roughness Ra of 0.1 m or less, the sheet has a tensile modulus of elasticity at 23 C. from 50 to 200 MPa, and the sheet has a parallel transmittance of 85% or more in a wavelength range from 400 to 1400 nm.

An adhesive sheet for laser dicing is provided that is capable of, in laser dicing by irradiation with laser light through the adhesive sheet, suppressing laser light scattering in the adhesive sheet while allowing easy chip division by expanding the adhesive sheet and enables inhibition of dust attachment during chip division for chip production in high yields. The present invention provides an adhesive sheet for laser dicing, including a substrate film having a back layer containing a friction reducing agent and an antistatic agent on one surface and having an adhesive layer on another surface, wherein the back layer has a surface with arithmetic mean roughness Ra of 0.1 m or less, the sheet has a tensile modulus of elasticity at 23 C. from 50 to 200 MPa, and the sheet has a parallel transmittance of 85% or more in a wavelength range from 400 to 1400 nm.