The invention relates to a foamed adhesive mass layer comprising a) 41.7 to 62.0 wt. % of an elastomer component, b) 37.7 to 58.0 wt. % of an adhesive resin component, c) 0 to 15 wt. % of a soft resin component, d) 0 to 18 wt. % further additives, and e) microballoons with a proportion of preferably 0.3 to 2.5 wt. %, preferably 0.5 to 2.0 wt. % and particularly preferably 0.7 to 1.7 wt. %, wherein the microballoons are at least partially expanded, wherein the elastomer component (a) consists of up to at least 90 wt. % polyvinyl aromatic compound polydine block copolymer, wherein the adhesive resin component (b) contains up to 4 to 100 wt. % of at least one type K1 if a rosin oligomer with a softening temperature (Ring & Ball, Test VI) of at least 90° C., and wherein the density (Text IX) of the foamed adhesive mass layer is at least 600 kg/m.sup.3 and max. 920 kg/m.sup.3.

An adhesive tape with high repeelability from the state that a portion of the adhesive tape has already been peeled from an adherend is provided. The adhesive tape includes a substrate layer and an adhesive layer. The substrate layer has a breaking stress in a range of 1 to 90 MPa and an elongation at break in a range of 400% to 3000%. The adhesive tape satisfies the following relational expression (i): [Math. 1] P.sub.400/P.sub.0≤0.9 (i). P.sub.0 denotes an initial cleavage strength N/cm.sup.2 of the adhesive tape, and P.sub.400 denotes a cleavage strength N/cm.sup.2 when the adhesive tape is stretched by 400%.

A protective film 10 of the present invention includes a base material layer and a pressure sensitive adhesive layer, and is used by being attached to a resin substrate 21 at the time of performing heat bending on the resin substrate 21. The pressure sensitive adhesive layer contains a polyolefin having a melting point of lower than 125° C. The base material layer has a first layer which contains a polyolefin having a melting point of 150° C. or higher, and a second layer which contains an adhesive resin. In a case of heating the protective film 100 having such a configuration, in a state of being interposed between two attaching substrates which are formed of polycarbonate, at 145° C. for 30 minutes, peeling off one attaching substrate on the side of the pressure sensitive adhesive layer at 25° C., and then viewing a surface of the one attaching substrate in a plan view, a residual ratio of an area where the pressure sensitive adhesive layer remains is 5% or less.

The invention relates to a sealing element with high sealing effect against air and moisture, which is easy to apply, and which moreover offers the possibility to reopen the sealed gap in an uncomplicated manner. Said solution is provided by an adhesive tape with differing adhesive power on the two main sides, which comprises a) a polymer foam layer and b) an outer adhesive compound layer and/or an outer thermoplastic film on one side of the polymer foam layer and is characterized in that, where the adhesive tape comprises an outer adhesive compound layer, the tape has a greater adhesive power on the side provided with the outer adhesive compound layer than on the opposing side and/or, where the adhesive tape comprises an outer thermoplastic film, the tape has a lower adhesive power on the side provided with the outer thermoplastic film than on the opposing side. The invention furthermore relates to the use of an adhesive tape according to the invention for sealing a joint between two components.

A protective film of the present invention is used at the time of performing heat bending on the resin substrate, and includes a base material layer and a pressure sensitive adhesive layer adhered to a resin substrate, in which the base material layer includes a first layer which is positioned on an opposite side of the pressure sensitive adhesive layer and has a melting point of 150° C. or higher, and includes a second layer which is positioned on a pressure sensitive adhesive layer side and has a melting point of lower than 150° C., the pressure sensitive adhesive layer has a melting point of lower than 150° C., and MFR of a thermoplastic resin contained in the second layer, which is measured in conformity with JIS K7210, is in a range of 0.5 g/10 min to 4.0 g/10 min.

Multilayer films and adhesive tapes that include such films, wherein the multilayer films include plasticized polyvinyl chloride and optionally one or more fillers.

The present invention relates to a thermoplastic elastomer for carbon fiber reinforced plastic bonding lamination, which is contained in a layer to be laminated on a layer composed of a carbon-fiber reinforced plastic, wherein the thermoplastic elastomer for carbon fiber reinforced plastic bonding lamination contains a styrene-based thermoplastic elastomer and a polymer modified by an α,β-unsaturated carboxylic acid, the styrene-based thermoplastic elastomer contains components (a) to (d), and a concentration of an α,β-unsaturated carboxylic acid derived from the polymer modified by the α,β-unsaturated carboxylic acid is 0.01 to 10% by mass.

A tackifier composition comprising at least one thermoplastic hydrocarbon resin and an antioxidant composition is provided; wherein a portion of the volatile organic compounds in the thermoplastic hydrocarbon resin has been removed; wherein the antioxidant composition comprises at least one primary antioxidant and at least one secondary antioxidant; and wherein the levels of individual volatile organic compound monitored in the tackifier composition are less than about 0.5 ppm as measured by GC/MS headspace analysis. Processes for producing the tackifier composition are also provided as well as adhesives comprising the tackifier compositions.

Multilayer films and adhesive tapes that include such films, wherein the multilayer films include plasticized polyvinyl chloride and optionally one or more fillers.

Tape constructions having a pressure sensitive adhesive containing a block copolymer component that includes a midblock segment and a plurality of end block segments, each end block segment comprising polystyrene, a (meth)acrylic functional additive having a glass transition temperature of from 50° C. to 160° C., a first tackifier compatible with the midblock segment and containing a hydrocarbon, and a second tackifier compatible with the end block segments and containing a polyphenylene ether that can be incorporated into articles. The pressure sensitive adhesive is subjected to electron beam radiation.