Backing films for adhesive tapes are presented, as well as adhesive tapes comprising such backing films, which may include tapes used in construction such as seam sealing tapes, roofing tapes, and flashing tapes. The backing film comprises a core layer, a first skin layer, and optionally a second skin layer, where the backing film has a coefficient of thermal expansion of less than 90 ppm/° C. measured in at least one direction within the plane of the film, and, in some embodiments, a Young's modulus of less than 550 MPa as measured in at least one direction. In some embodiments, the backing film has a coefficient of thermal expansion of not more than 91.8 ppm/° C. and a Young's modulus of not more than 540 MPa as measured in any direction within the plane of the film. In some embodiments, the core layer comprises a polyolefin, and skin layers comprise a thermoplastic elastomer.

Surface protection systems, methods of forming, and methods of applying are described. A surface protection system includes a damage resistant polymer film having a major surface and an adhesive deposited on the major surface of the damage resistant polymer film. The damage resistant polymer film has a thickness of about 8 mils to about 20 mils.

A pressure-sensitive adhesive for bonding to various surfaces, such as metals, plastics, and also vehicle finishes, with rapid wetting and high adhesion, with good shear strengths and bond strengths under different conditions and without undergoing dewetting even under lasting mechanical load, comprises: a) at least 50 wt % of at least one polymer A whose monomer basis comprises the following monomers: a1) at least one (meth)acrylic ester having a homopolymer glass transition temperature of not more than −60° C. and an alcohol component based on a branched, primary alcohol, having an iso index of 1; a2) at least one (meth)acrylic ester having an alcohol component based on a linear C.sub.1-C.sub.18 alcohol; a3) acrylic acid; b) at least 5 wt % of at least one synthetic rubber; and c) at least 10 wt % of at least one peel adhesion-reinforcing resin.

Also disclosed is an adhesive tape comprising a foamed carrier and the pressure-sensitive adhesive.

A powerful pressure-sensitive adhesive which is notable by way of good wetting and dewetting behaviour on surfaces having different surface energies comprises at least 50 wt %, based on the total weight of the pressure-sensitive adhesive, of at least one polymer A which may be derived from the following monomer composition: a1) 55 to 75 wt % of at least one (meth)acrylic ester having a homopolymer glass transition temperature of not more than −60° C. and an alcohol component based on a branched, primary alcohol, having an iso index of 1; a2) 20 to 40 wt % of at least one (meth)acrylic ester having an alcohol component based on a linear C.sub.1-C.sub.18 alcohol; a3) 5 to 15 wt % of acrylic acid.

The pressure-sensitive adhesive of the invention reveals particularly good properties when combined with a foamed carrier.

The present disclosure relates to an adhesive film, and adhesive film includes: a photothermal conversion layer including a light absorbing agent and a pyrolytic resin; an adhesive base film layer disposed on the photothermal conversion layer; a buffer layer disposed on the adhesive base film layer; and an adhesive layer disposed on the buffer layer, and the buffer layer includes a polysiloxane resin, and the adhesive layer includes a silicon-based adhesive, and the silicon-based adhesive includes a silicon-based tackifier and a polysiloxane resin. The adhesive film according to the present disclosure can simplify a process of processing a substrate, and can prevent a damage of the substrate and a circuit or an element formed on the substrate.

This disclosure discloses an adhesive tape having a dimension in a thickness direction, comprising a tape base layer, an adhesive layer, a separation material, and a separation layer. The adhesive layer is disposed on one side of the tape base layer in the thickness direction and is including a predetermined adhesive. The separation material separably adheres to the adhesive layer, and is provided on the one side of the adhesive layer in the thickness direction. The separation layer is provided on the other side of the tape base layer in the thickness direction and is including an olefin resin separating agent or an acrylic resin separating agent having a long-chain alkyl group.

A method for increasing the adhesion between the first surface of a first web-type material and a first surface of a second web-type material, the first web-type material and the second web-type material being supplied to a lamination nip continuously and with the same direction of the web. In said nip, the first surface of the first web-type material and of the second web-type material are laminated together and both first surfaces are treated with a plasma over the whole surface. The lamination nip is formed by a pressure roller and a counter-pressure roller and at least one of the surfaces of the rollers or both are equipped with a dielectric. The first web-type material comprises an adhesive compound layer arranged in the first web-type material such as to form the first surface of the first web-type material.

A method for increasing the adhesion between the first surface of a first web-type material and a first surface of a second web-type material, the first web-type material and the second web-type material being supplied to a lamination nip continuously and with the same direction of the web. In said nip, the first surface of the first web-type material and of the second web-type material are laminated together and both first surfaces are treated with a plasma over the whole surface. The lamination nip is formed by a pressure roller and a counter-pressure roller and at least one of the surfaces of the rollers or both are equipped with a dielectric. The plasma or the corona is produced by a nozzle. The first web-type material comprises an adhesive compound layer arranged in the first web-type material such as to form the first surface of the first web-type material.

The present invention provides an adhesive film hardly suffering from fisheyes and deposition of dirt and dusts thereonto and having excellent mechanical strength and heat resistance as well as good adhesion properties, which can be suitably used as various surface protective films, etc. The present invention relates to an adhesive film comprising a polyester film and an adhesive layer formed on at least one surface of the polyester film, in which the adhesive layer comprises a resin having a glass transition point of not higher than 0° C., and an antistatic agent, and a thickness of the adhesive layer is not more than 10 μm.

A method for increasing the adhesion between the self-adhesive surface of a web-shaped material and a surface of a substrate, to which substrate the web-shaped material having the self-adhesive surface should be applied, wherein the web-shaped material is continuously fed to a laminating gap, in which the web-shaped material having the self-adhesive surface is laminated onto the surface of the substrate, the self-adhesive surface of the web-shaped material and the surface of the substrate are treated with a plasma over the entire area, and namely in such a way that the plasma is applied continuously to the two surfaces, starting from before the laminating gap into the laminating gap, the laminating gap being formed by a pressing element and the substrate and the surface of the pressing element being equipped with a dielectric.