A system for spraying hot-melt adhesive onto glued surfaces comprising a melter to heat hot-melt adhesive, an air compressor, a power and control system and a gun. The gun is connected to the melter by a pipe with screw connectors, through which a hot-melt adhesive being heated flows, and the air compressor by an air pipe with screw connectors through which a pressurized compressed air flows. The gun has a nozzle with a hot-melt adhesive outlet or orifice and a compressed air outlet. The pipe through which flows the hot-melt adhesive having a viscosity between 2500 mPa.Math.s and 7000 mPa.Math.s and a temperature between 120 C. and 200 C., and a density between 0.8 kg/dcm.sup.3 and 1.4 kg/dcm.sup.3, and the air pipe are fitted in an insulating layer of a hose.

A system for spraying hot-melt adhesive onto glued surfaces comprising a melter to heat hot-melt adhesive, an air compressor, a power and control system and a gun. The gun is connected to the melter by a pipe with screw connectors, through which a hot-melt adhesive being heated flows, and the air compressor by an air pipe with screw connectors through which a pressurized compressed air flows. The gun has a nozzle with a hot-melt adhesive outlet or orifice and a compressed air outlet. The pipe through which flows the hot-melt adhesive having a viscosity between 2500 mPa.Math.s and 7000 mPa.Math.s and a temperature between 120 C. and 200 C., and a density between 0.8 kg/dcm.sup.3 and 1.4 kg/dcm.sup.3, and the air pipe are fitted in an insulating layer of a hose.

Process for producing a pressure-sensitive adhesive comprising expanded microballoons, wherein the constituents for forming the adhesive are mixed in a first mixing assembly, the mixed adhesive is transferred into a second mixing assembly into which, at the same time, unexpanded microballoons are fed, the microballoons are expanded in the second mixing assembly or on exit from the second mixing assembly, the adhesive mixture with the expanded microballoons is shaped to a layer in a shaping assembly in which expanded microballoons which have broken through the surface are pressed into the layer surface and the layer of adhesive mixture together with the expanded microballoons are optionally applied to a weblike backing material.

Process for producing a pressure-sensitive adhesive comprising expanded microballoons, wherein the constituents for forming the adhesive are mixed in a first mixing assembly, the mixed adhesive is transferred into a second mixing assembly into which, at the same time, unexpanded microballoons are fed, the microballoons are expanded in the second mixing assembly or on exit from the second mixing assembly, the adhesive mixture with the expanded microballoons is shaped to a layer in a shaping assembly in which expanded microballoons which have broken through the surface are pressed into the layer surface and the layer of adhesive mixture together with the expanded microballoons are optionally applied to a weblike backing material.

Provided is a primer for a solar cell module which makes it possible to prevent peeling of a surface protective material from a sealing material over a long time, and a solar cell module manufactured using this primer. The primer includes 40 to 95 parts by mass of a polymerizable ester, 5 to 60 parts by mass of an adhesion promoter, and a polymerization initiator. The polymerizable ester includes at least one of an acryloyl group and a methacryloyl group. The adhesion promoter includes a functional group improvable is adhesion to an acrylic resin or a methacrylic resin, and an alkoxysilyl group. The polymerization initiator is configured to be able to initiate polymerization of the polymerizable ester. The content of the polymerization initiator is 0.1 to 10 parts by mass based on 100 parts by mass as a total of the polymerizable ester and the adhesion promoter.

A protection tape includes a base film, an antistatic layer and an adhesive layer. The antistatic layer is located on the base film. The surface impedance of the antistatic layer is less than 1E+9?, and the antistatic layer includes a first resin and conductive materials dispersed in the first resin. The conductive materials include at least one of metal ions and carbon. The adhesive layer is located on a corona treated surface of the base film. The protection tape provided by the present disclosure has the advantage of having resistant to corona treatment.

A sandwich panel for an automobile includes a core layer, a surface layer, and an adhesive layer. The core layer includes glass fibers and thermoplastic resins and defines an optimal weight and thickness to provide flexural performance and non-flammability. The sandwich panel provides a flame barrier layer, which is a non-combustible layer during ignition and prevents flame from leaking to the outside of the panel.

A sandwich panel for an automobile includes a core layer, a surface layer, and an adhesive layer. The core layer includes glass fibers and thermoplastic resins and defines an optimal weight and thickness to provide flexural performance and non-flammability. The sandwich panel provides a flame barrier layer, which is a non-combustible layer during ignition and prevents flame from leaking to the outside of the panel.

Cure in place pressure sensitive adhesive compositions are described that comprise one or more of a bodying component, a structural diluent, a radical diluent as well as additives such as crosslinkers, external catalysts, photoinitiators and stabilizers/process aids. The bodying component can be acrylic or non-acrylic.

Cure in place pressure sensitive adhesive compositions are described that comprise one or more of a bodying component, a structural diluent, a radical diluent as well as additives such as crosslinkers, external catalysts, photoinitiators and stabilizers/process aids. The bodying component can be acrylic or non-acrylic.