Disclosed herein is a bonding method for bonding two adherends using an adhesive main agent that contains a thermoplastic resin having a cross-linkable group and a catalyst. The bonding method includes the steps of forming a main agent layer on one of the adherends; applying a catalyst onto the main agent layer; laminating the main agent layer and another adherend; and heating and pressing a laminated body in a layer thickness direction. Another embodiment of the bonding method may include a step of applying a catalyst onto one of the adherends, a step of forming a main agent layer on a surface onto which the catalyst has been applied, a step of laminating the two adherends, and a step of heating and pressing a laminated body in a layer thickness direction.

An adhesive for forming a water tight seal, including: a resin, being insoluble in water; a wax, being moldable and combined with the resin to form a combination, the wax combine with the resin to increase the ductility of the combination; and a binding agent, the binding agent being combined with the combination to increase the viscosity of the combination; where the resin, the wax, and binding agent are combined to form the adhesive.

An adhesive for forming a water tight seal, including: a resin, being insoluble in water; a wax, being moldable and combined with the resin to form a combination, the wax combine with the resin to increase the ductility of the combination; and a binding agent, the binding agent being combined with the combination to increase the viscosity of the combination; where the resin, the wax, and binding agent are combined to form the adhesive.

Systems and methods for controlling adhesive application are disclosed. The systems and methods may include a controller and one or more sensors configured to measure an amount of adhesive applied to a plurality of substrates by a pump, detect a number of the substrates, determine an amount of adhesive applied per substrate, compare the adhesive applied per substrate to a target value, and adjust a pressure of the pump based on the comparison. The sensor(s) may include one or more of a valve sensor coupled to an adhesive supply, a flow rate sensor coupled to a manifold, a flow rate sensor coupled to one or more hoses, and a flow rate sensors coupled to a gun.

The present invention relates to a two-component composition comprising: —a composition A comprising: —at least one reducing agent; —at least one (meth)acrylate monomer; —a composition B comprising: —at least one oxidising agent; and—optionally at least one (meth)acrylate monomer; the composition being characterised in that: —it comprises at least one radical photoinitiator in composition A and/or B; —it comprises at least one polymerisation inhibitor in an amount less than or equal to 0.3% by weight relative to the total weight of the composition.

The present invention relates to a two-component composition comprising: —a composition A comprising: —at least one reducing agent; —at least one (meth)acrylate monomer; —a composition B comprising: —at least one oxidising agent; and—optionally at least one (meth)acrylate monomer; the composition being characterised in that: —it comprises at least one radical photoinitiator in composition A and/or B; —it comprises at least one polymerisation inhibitor in an amount less than or equal to 0.3% by weight relative to the total weight of the composition.

A pressure-sensitive adhesive sheet capable of allowing a small electronic part to be temporarily fixed in a satisfactory manner and satisfactorily peeled. The pressure-sensitive adhesive sheet includes: a gas-generating layer; and a gas barrier layer arranged on at least one side of the gas-generating layer, wherein the gas barrier layer is a layer that is deformed through laser light irradiation of the pressure-sensitive adhesive sheet, wherein a thickness (μm) of a highly elastic portion of the gas barrier layer is equal to or smaller than a value calculated by the following expression (1), and wherein the thickness (μm) of the highly elastic portion of the gas barrier layer is equal to or larger than a value calculated by the following expression (2): 12546×EXP(−0.728×log.sub.10(Er×10.sup.6)) . . . (1); 18096×EXP(−0.949×log.sub.10(Er×10.sup.6)) . . . (2), where Er represents a modulus of elasticity (MPa) of the highly elastic portion of the gas barrier layer by a nanoindentation method at 25° C.

A pressure-sensitive adhesive sheet capable of allowing a small electronic part to be temporarily fixed in a satisfactory manner and satisfactorily peeled. The pressure-sensitive adhesive sheet includes: a gas-generating layer; and a gas barrier layer arranged on at least one side of the gas-generating layer, wherein the gas barrier layer is a layer that is deformed through laser light irradiation of the pressure-sensitive adhesive sheet, wherein a thickness (μm) of a highly elastic portion of the gas barrier layer is equal to or smaller than a value calculated by the following expression (1), and wherein the thickness (μm) of the highly elastic portion of the gas barrier layer is equal to or larger than a value calculated by the following expression (2): 12546×EXP(−0.728×log.sub.10(Er×10.sup.6)) . . . (1); 18096×EXP(−0.949×log.sub.10(Er×10.sup.6)) . . . (2), where Er represents a modulus of elasticity (MPa) of the highly elastic portion of the gas barrier layer by a nanoindentation method at 25° C.

The invention relates to an adhesive dual-component composition based on polyurethane, comprising an —NCO component and an —OH component such that: the —NCO component is a composition comprising: A) at least one polyurethane prepolymer comprising at least two NCO terminal groups obtained by the polyaddition reaction of at least one dissymmetric diisocyanate monomer and at least one diol, and B) at least one triisocyanate selected from isocyanurates, biurets, diisocyanate and triol adducts, and the mixtures thereof; the —OH component is a composition comprising at least one polyol; at least one of the polyols or diols is selected from polyether polyols (or polyether diols); at least one of the polyols or diols is selected from polyester polyols (or polyester diols); and the weight ratio of the quantity of polyether polyol(s) to the quantity of polyester polyol(s), defined as r.sub.4, ranges from 0.6 to 2.2.

The invention relates to an adhesive dual-component composition based on polyurethane, comprising an —NCO component and an —OH component such that: the —NCO component is a composition comprising: A) at least one polyurethane prepolymer comprising at least two NCO terminal groups obtained by the polyaddition reaction of at least one dissymmetric diisocyanate monomer and at least one diol, and B) at least one triisocyanate selected from isocyanurates, biurets, diisocyanate and triol adducts, and the mixtures thereof; the —OH component is a composition comprising at least one polyol; at least one of the polyols or diols is selected from polyether polyols (or polyether diols); at least one of the polyols or diols is selected from polyester polyols (or polyester diols); and the weight ratio of the quantity of polyether polyol(s) to the quantity of polyester polyol(s), defined as r.sub.4, ranges from 0.6 to 2.2.