Layered product olefin foam and use

A foamed laminate based on olefin in which a substrate layer is laminated with a non-foamed skin layer, wherein the foamed laminate is a co-extruded product in which the substrate layer and the skin layer are heat fused and the substrate layer is foamed by co-extrusion by multilayer extrusion molding machine, wherein

• said substrate layer comprises a foamed body (XF1) comprising an uncrosslinked ethylenic thermoplastic elastomer (A) comprising 5-60 parts by weight of a polyethylene resin (a-1)and 40-95 parts by weight of a copolymer based on ethylene/α-olefin (a-2), with said constituents (a-1)and (a-2) summing up to 100 parts by weight, and
• said skin layer comprises an olefinic thermoplastic elastomer composition (Z1),
• wherein said ethylenic thermoplastic elastomer (A) consists of a thermoplastic elastomer obtained by subjecting a mixture of the polyethylene resin (a-1) and the copolymer based on ethylene/α-olefin (a-2) to a dynamic heat treatment in the absence of a cross-linking agent, and
• wherein said copolymer based on ethylene/α-olefin (a-2) is a copolymer of ethylene, an α-olefin and, optionally incorporated, non-conjugated polyene and has a Mooney viscosity ML1+4 (100° C.) of 90-250 and an ethylene content of 70-95 mole %, and
• wherein the ethylenic thermoplastic elastomer (A) is one which has a compression set of 60% or less as determined according to JIS K 6262 (at 70° C., 22 hours) and a melt flow rate of 0.1 g/10 min. or higher as determined according to JIS K 7120 (at 230° C., 10 kg load), and
• wherein the foamed body (XF1) is formed by subjecting a foamable ethylenic thermoplastic elastomer composition (X1) comprising the ethylenic thermoplastic elastomer (A) and 0.5-20 parts by weight of an organic or inorganic foaming agent of a heat decomposition type (B) per 100 parts by weight of the ethylenic thermoplastic elastomer (A) and the foaming agent (B) to foaming by co-extrusion with the foaming expansion ratio of the foamed body (XF1) of at least twofold and
• wherein the foamed laminate is formed by co-extrusion of the foamable ethylenic thermoplastic elastomer composition (X1) and the skin layer comprises an olefinic thermoplastic elastomer composition (Z1) wherein the foamable ethylenic thermoplastic elastomer composition (X1) foams by heat fusing to form the substrate layer of the foamed body (XF1), and
• wherein said olefinic thermoplastic elastomer composition (Z1) is one which comprises, per 100 parts by weight of an olefinic thermoplastic elastomer (C), at least one kind of lubricant selected from the group consisting of 0.5-25 parts by weight of an organopolysiloxane (D), 0.5-10 parts by weight of a fluorine-containing polymer (E) and 0.5-10 parts by weight of an antistatic agent (F), each in a proportion as given above.

A foamed laminate based on olefin in which a substrate layer is laminated with a non-foamed skin layer, wherein the foamed laminate is a co-extruded product in which the substrate layer and the skin layer are heat fused and the substrate layer is foamed by co-extrusion by multilayer extrusion molding machine, wherein

• said substrate layer comprises a foamed body (XF1) comprising an uncrosslinked ethylenic thermoplastic elastomer (A) comprising 5-60 parts by weight of a polyethylene resin (a-1)and 40-95 parts by weight of a copolymer based on ethylene/α-olefin (a-2), with said constituents (a-1) and (a-2) summing up to 100 parts by weight, and
• said skin layer comprises an olefinic thermoplastic elastomer composition (Z2),
• wherein said ethylenic thermoplastic elastomer (A) consists of a thermoplastic elastomer obtained by subjecting a mixture of the polyethylene resin (a-1)and the copolymer based on ethylene/α-olefin (a-2) to a dynamic heat treatment in the absence of a cross-linking agent, and
• wherein said copolymer based on ethylene/α-olefin (a-2) is a copolymer of ethylene, an α-olefin and, optionally incorporated, non-conjugated polyene and has a Mooney viscosity ML1+4(100° C.) of 90-250 and an ethylene content of 70-95 mole %, and
• wherein the ethylenic thermoplastic elastomer (A) is one which has a compression set of 60% or less as determined according to JIS K 6262 (at 70° C., 22 hours) and a melt flow rate of 0.1 g/10 min. or higher as determined according to JIS K 7120 (at 230° C., 10 kg load), and
• wherein the foamed body (XF1)is formed by subjecting a foamable ethylenic thermoplastic elastomer composition (X1) comprising the ethylenic thermoplastic elastomer (A) and 0.5-20 parts by weight of an organic or inorganic foaming agent of a heat decomposition type (B) per 100 parts by weight of the ethylenic thermoplastic elastomer (A) and the foaming agent (B) to foaming by co-extrusion with the foaming expansion ratio of the foamed body (XF1) of at least twofold and
• wherein the foamed laminate is formed by co-extrusion of the foamable ethylenic thermoplastic elastomer composition (X1) and the skin layer comprises an olefinic thermoplastic elastomer composition (Z2) wherein the foamable ethylenic thermoplastic elastomer composition (X1) foams by heat fusing to form the substrate layer of the foamed body (XF1), and
• wherein the said olefinic thermoplastic elastomer composition (Z2) is one which comprises, per 100 parts by weight of an olefinic thermoplastic elastomer (C), a polyolefin resin (G) in an amount of 5 -200 parts by weight.

A foamed laminate based on olefin in which a substrate layer is laminated with a non-foamed skin layer, wherein the foamed laminate is a co-extruded product in which the substrate layer and the skin layer are heat fused and the substrate layer is foamed by co-extrusion by multilayer extrusion molding machine, wherein

• said substrate layer comprises a foamed body (XF1) comprising an uncrosslinked ethylenic thermoplastic elastomer (A) comprising 5-60 parts by weight of a polyethylene resin (a-1)and 40-95 parts by weight of a copolymer based on ethylene/α-olefin (a-2), with said constituents (a-1)and (a-2) summing up to 100 parts by weight, and
• said skin layer comprises an olefinic thermoplastic elastomer composition (Z3),
• wherein said ethylenic thermoplastic elastomer (A) consists of a thermoplastic elastomer obtained by subjecting a mixture of the polyethylene resin (a-1)and the copolymer based on ethylene/α-olefin (a-2) to a dynamic heat treatment in the absence of a cross-linking agent, and
• wherein said copolymer based on ethylene/α-olefin (a-2) is a copolymer of ethylene, an α-olefin and, optionally incorporated, non-conjugated polyene and has a Mooney viscosity ML1+4(100° C.) of 90-250 and an ethylene content of 70-95 mole %, and
• wherein the ethylenic thermoplastic elastomer (A) is one which has a compression set of 60% or less as determined according to JIS K 6262 (at 70° C., 22 hours) and a melt flow rate of 0.1 g/10 min. or higher as determined according to JIS K 7120 (at 230° C., 10 kg load), and
• wherein the foamed body (XF1) is formed by subjecting a foamable ethylenic thermoplastic elastomer composition (X1) comprising the ethylenic thermoplastic elastomer (A) and 0.5-20 parts by weight of an organic or inorganic foaming agent of a heat decomposition type (B) per 100 parts by weight of the ethylenic thermoplastic elastomer (A) and the foaming agent (B) to foaming by co-extrusion with the foaming expansion ratio of the foamed body (XF1) of at least twofold and
• wherein the foamed laminate is formed by co-extrusion of the foamable ethylenic thermoplastic elastomer composition (X1) and the olefinic thermoplastic elastomer composition (Z3) wherein the foamable ethylenic thermoplastic elastomer composition (X1) foams by heat fusing to form the substrate layer of the foamed body (XF1), and
• wherein said olefinic thermoplastic elastomer composition (Z3) is one which comprises, per 100 parts by weight of an olefinic thermoplastic elastomer (C), at least one kind selected from the group consisting of 0.5-25 parts by weight of an organopolysiloxane (D), 0.5-10 parts by weight of a fluorine-containing polymer (E), 0.5-10 parts by weight of an antistatic agent (F), 0.01-5 parts by weight of a fatty acid amide, 0.01-5 parts by weight of a metal soap, 0.01-5 parts by weight of an ester, 0.01-5 parts by weight of calcium carbonate and 0.01-5 parts by weight of a silicate, each in a proportion given above, and which further comprises a polyolefin resin (G) in an amount of 5-200 parts by weight.

A foamed laminate based on olefin in which a substrate layer is laminated with a non-foamed skin layer, wherein the foamed laminate is a co-extruded product in which the substrate layer and the skin layer are heat fused and the substrate layer is foamed by co-extrusion by multilayer extrusion molding machine, wherein

• said substrate layer comprises a foamed body (XF1) comprising an uncrosslinked ethylenic thermoplastic elastomer (A) comprising 5-60 parts by weight of a polyethylene resin (a-1) and 40-95 parts by weight of a copolymer based on ethylene/α-olefin (a-2), with said constituents (a-1) and (a-2) summing up to 100 parts by weight, and
• said skin layer comprises an olefinic thermoplastic elastomer composition (Z),
• wherein said ethylenic thermoplastic elastomer (A) consists of a thermoplastic elastomer obtained by subjecting a mixture of the polyethylene resin (a-1) and the copolymer based on ethylene/α-olefin (a-2) to a dynamic heat treatment in the absence of a cross-linking agent, and
• wherein said copolymer based on ethylene/α-olefin (a-2) is a copolymer of ethylene, an α-olefin and, optionally incorporated, non-conjugated polyene and has a Mooney viscosity ML1+4(100° C.) of 90-250 and an ethylene content of 70-95 mole %, and
• wherein the ethylenic thermoplastic elastomer (A) is one which has a compression set of 60% or less as determined according to JIS K 6262 (at 70° C., 22 hours) and a melt flow rate of 0.1 g/10 min. or higher as determined according to JIS K 7120 (at 230° C., 10 kg load), and
• wherein the foamed body (XF1) is formed by subjecting a foamable ethylenic thermoplastic elastomer composition (X1) comprising the ethylenic thermoplastic elastomer (A) and 0.5-20 parts by weight of an organic or inorganic foaming agent of a heat decomposition type (B) per 100 parts by weight of the ethylenic thermoplastic elastomer (A) and the foaming agent (B) to foaming by co-extrusion with the foaming expansion ratio of the foamed body (XF1) of at least twofold and
• wherein the foamed laminate is formed by co-extrusion of the foamable ethylenic thermoplastic elastomer composition (X1) and the olefinic thermoplastic elastomer composition (Z) wherein the foamable ethylenic thermoplastic elastomer composition (X1) foams by heat fusing to form the substrate layer of the foamed body (XF1), and
• wherein said olefinic thermoplastic elastomer composition (Z) is one which comprises, per 100 parts by weight of an olefinic thermoplastic elastomer (C), at least one kind of lubricant (ZL) selected from the group consisting of 0.5-25 parts by weight of an organopolysiloxane (D), 0.5-10 parts by weight of a fluorine-containing polymer (E), 0.5-10 parts by weight of an antistatic agent (F), 5-200 parts by weight of a polyolefin resin (G), 0.01-5 parts by weight of a fatty acid amide, 0.01-5 parts by weight of a metal soap, 0.01-5 parts by weight of an ester, 0.01-5 parts by weight of calcium carbonate and 0.01-5 parts by weight of a silicate, each in a proportion as given above.

A foamed laminate based on olefin in which a substrate layer is laminated with a non-foamed skin layer, wherein the foamed laminate is a co-extruded product in which the substrate layer and the skin layer are heat fused and the substrate layer is foamed by co-extrusion by multilayer extrusion molding machine, wherein

• said substrate layer comprises a foamed body (XF2) comprising an uncrosslinked olefinic thermoplastic elastomer composition (X2) comprising 100 parts by weight of an olefinic thermoplastic elastomer (J) and 1-20 parts by weight of an olefinic thermoplastic resin (K),
• said skin layer comprises an ultrahigh molecular weight polyolefin resin (Y), and optionally at least one of a softening agent, heat-resisting stabilizer, antistatic agent, weathering stabilizer, antioxidant, filler, coloring agent or a lubricant,
• wherein said olefinic thermoplastic elastomer (J) is one which is obtained by subjecting a mixture comprising 5-60 parts by weight of a polyolefin resin (j-1) and 40-95 parts by weight of an ethylene/α-olefin copolymer rubber (j-2) resulting from copolymerization of ethylene, an α-olefin and, optionally incorporated, a non-conjugated polyene, with said constituents (j-1) and (j-2) summing up to 100 parts by weight, to a dynamic heat treatment,
• said ethylene/α-olefin copolymer rubber (j-2) is one which has a Mooney viscosity ML1+4 (100° C.) of 10-250 and an ethylene content of 55-95 mole % and
• said olefinic thermoplastic resin (K) is one which has an olefin content of 50-100 mole % and a melt flow rate (ASTM D-1238-65T, 230° C., 2.16 kg load) of 0.01-2 g/10 min. and said ultrahigh molecular weight polyolefin resin (Y) is one which has an intrinsic viscosity (η) of 3.5 -8.3 dl/g determined in decalin at 135° C., and
• wherein the olefinic thermoplastic elastomer composition (X2) is one which has a compression set of 60% or less as determined according to JIS K 6262 (at 70° C., 22 hours) and a melt flow rate of 0.1 g/10 min. or higher as determined according to JIS K 7120 (at 230° C., 10 kg load), and
• wherein the foamed body (XF2) is formed by foaming a foamable composition based on olefin (X3) comprising 100 parts by weight of the olefinic thermoplastic elastomer (J), 1-20 parts by weight of the olefinic thermoplastic resin (K) and 0.5-20 parts by weight of an organic or an inorganic foaming agent of heat-decomposition type (B) per 100 parts by weight of total sum of the olefinic thermoplastic elastomer (J) and the olefinic thermoplastic resin (K) by co-extrusion with the foaming expansion ratio of the foamed body (XF2) of at least twofold, and
• wherein the foamed laminate is formed by co-extrusion of the foamable composition based on olefin (X3) and the ultrahigh molecular weight polyolefin resin (Y) wherein the foamable composition based on olefin (X3) foams by heat fusing to form the substrate layer of the foamed body (XF2).

A foamed laminate based on olefin in which a substrate layer is laminated with a non-foamed skin layer, wherein the foamed laminate is a co-extruded product in which the substrate layer and the skin layer are heat fused and the substrate layer is foamed by co-extrusion by multilayer extrusion molding machine, wherein

• said substrate layer comprises a foamed body (XF2) comprising an uncrosslinked olefinic thermoplastic elastomer composition (XF2) comprising 100 parts by weight of an olefinic thermoplastic elastomer (J) and 1-20 parts by weight of an olefinic thermoplastic resin (K), and
• said skin layer comprises an olefinic thermoplastic elastomer composition (Z1),
• wherein said olefinic thermoplastic elastomer (J) is one which is obtained by subjecting a mixture comprising 5-60 parts by weight of a polyolefin resin (j-1) and 40-95 parts by weight of an ethylene/α-olefin copolymer rubber (j-2) resulting from copolymerization of ethylene, an α-olefin and, optionally incorporated, a non-conjugated polyene, with said constituents (j-1) and (j-2) summing up to 100 parts by weight, to a dynamic heat treatment,
• said ethylene/α-olefin copolymer rubber (j-2) is one which has a Mooney viscosity ML1+4 (100° C.) of 10-250 and an ethylene content of 55-95 mole % and
• said olefinic thermoplastic resin (K) is one which has an olefin content of 50-100 mole % and a melt flow rate (ASTM D-1238-65T, 230° C., 2.16 kg load) of 0.01-2 g/10 min., and
• wherein the olefinic thermoplastic elastomer composition (X2) is one which has a compression set of 60% or less as determined according to JIS K 6262 (at 70° C., 22 hours) and a melt flow rate of 0.1 g/10 min. or higher as determined according to JIS K 7120 (at 230° C., 10 kg load), and
• wherein the foamed body (XF2) is formed by foaming a foamable composition based on olefin (X3) comprising 100 parts by weight of the olefinic thermoplastic elastomer (J), 1-20 parts by weight of the olefinic thermoplastic resin (K) and 0.5-20 parts by weight of an organic or an inorganic foaming agent of heat-decomposition type (B) per 100 parts by weight of total sum of the olefinic thermoplastic elastomer (J) and the olefinic thermoplastic resin (K) by co-extrusion with the foaming expansion ratio of the foamed body (XF2) of at least twofold, and
• wherein the foamed laminate is formed by co-extrusion of the foamable composition based on olefin (X3) and the olefinic thermoplastic elastomer composition (Z1) wherein the foamable composition based on olefin (X3) foams by heat fusing to form the substrate layer of the foamed body (XF2), and
• said olefinic thermoplastic elastomer composition (Z1) is one which comprises, per 100 parts by weight of an olefinic thermoplastic elastomer (C), at least one kind of lubricant selected from the group consisting of 0.5-25 parts by weight of an organopolysiloxane (D), 0.5-10 parts by weight of a fluorine-containing polymer (E) and 0.5-10 parts by weight of an antistatic agent (F), each in a proportion as given above.

A foamed laminate based on olefin in which a substrate layer is laminated with a non-foamed skin layer, wherein the foamed laminate is a co-extruded product in which the substrate layer and the skin layer are heat fused and the substrate layer is foamed by co-extrusion by multilayer extrusion molding machine, wherein

• said substrate layer comprises a foamed body (XF 2) comprising an uncrosslinked olefinic thermoplastic elastomer composition (X2) comprising 100 parts by weight of an olefinic thermoplastic elastomer (J) and 1-20 parts by weight of an olefinic thermoplastic resin (K), and
• said skin layer comprises an olefinic thermoplastic elastomer composition (Z2),
• wherein said olefinic thermoplastic elastomer (J) is one which is obtained by subjecting a mixture comprising 5-60 parts by weight of a polyolefin resin (j-1) and 40-95 parts by weight of an ethylene/α-olefin copolymer rubber (j-2) resulting from copolymerization of ethylene, an α-olefin and, optionally incorporated, a non-conjugated polyene, with said constituents (j-1) and (j-2) summing up to 100 parts by weight, to a dynamic heat treatment,
• said ethylene/α-olefin copolymer rubber (j-2) is one which has a Mooney viscosity ML1+4 (100° C.) of 10-250 and an ethylene content of 55-95 mole % and
• said olefinic thermoplastic resin (K) is one which has an olefin content of 50-100 mole % and a melt flow rate (ASTM D-1238-65T, 230° C., 2.16 kg load) of 0.01-2 g/10 min., and
• wherein the olefinic thermoplastic elastomer composition (X2) is one which has a compression set of 60% or less as determined according to JIS K 6262 (at 70° C., 22 hours) and a melt flow rate of 0.1 g/10 min. or higher as determined according to JIS K 7120 (at 230° C., 10 kg load), and
• wherein the foamed body (XF2) is formed by foaming a foamable composition based on olefin (X3) comprising 100 parts by weight of the olefinic thermoplastic elastomer (J), 1-20 parts by weight of the olefinic thermoplastic resin (K) and 0.5-20 parts by weight of an organic or an inorganic foaming agent of heat-decomposition type (B) per 100 parts by weight of total sum of the olefinic thermoplastic elastomer (J) and the olefinic thermoplastic resin (K) by co-extrusion with the foaming expansion ratio of the foamed body (XF2) of at least twofold, and
• wherein the foamed laminate is formed by co-extrusion of the foamable composition based on olefin (X3) and the olefinic thermoplastic elastomer composition (Z2) wherein the foamable composition based on olefin (X3) foams by heat fusing to form the substrate layer of the foamed body (XF2), and
• said olefinic thermoplastic elastomer composition (Z2) is one which comprises, per 100 parts by weight of an olefinic thermoplastic elastomer (C), a polyolefin resin (G) in an amount of 5-200 parts by weight.

A foamed laminate based on olefin in which a substrate layer is laminated with a non-foamed skin layer, wherein the foamed laminate is a co-extruded product in which the substrate layer and the skin layer are heat fused and the substrate layer is foamed by co-extrusion by multilayer extrusion molding machine, wherein

• said substrate layer comprises a foamed body (XF 2) comprising an uncrosslinked olefinic thermoplastic elastomer composition (X2)comprising 100 parts by weight of an olefinic thermoplastic elastomer (J) and 1-20 parts by weight of an olefinic thermoplastic resin (K), and
• said skin layer comprises an olefinic thermoplastic elastomer composition (Z3),
• wherein said olefinic thermoplastic elastomer (J) is one which is obtained by subjecting a mixture comprising 5-60 parts by weight of a polyolefin resin (j-1) and 40-95 parts by weight of an ethylene/α-olefin copolymer rubber (j-2) resulting from copolymerization of ethylene, an α-olefin and, optionally incorporated, a non-conjugated polyene, with said constituents (j-1) and (j-2) summing up to 100 parts by weight, to a dynamic heat treatment,
• said ethylene/α-olefin copolymer rubber (j-2) is one which has a Mooney viscosity ML1∝(100 0C) of 10-250 and an ethylene content of 55-95 mole % and
• said olefinic thermoplastic resin (K) is one which has an olefin content of 50-100 mole % and a melt flow rate (ASTM D-1238-65T, 230° C., 2.16 kg load) of 0.01-2 g/10 min., and
• wherein the olefinic thermoplastic elastomer composition (X2)is one which has a compression set of 60% or less as determined according to JIS K 6262 (at 70° C., 22 hours) and a melt flow rate of 0.1g/10 min. or higher as determined according to JIS K 7120 (at 230° C., 10 kg load), and
• wherein the foamed body (XF2) is formed by foaming a foamable composition based on olefin (X3) comprising 100 parts by weight of the olefinic thermoplastic elastomer (J), 1-20 parts by weight of the olefinic thermoplastic resin (K) and 0.5-20 parts by weight of an organic or an inorganic foaming agent of heat-decomposition type (B) per 100 parts by weight of total sum of the olefinic thermoplastic elastomer (J) and the olefinic thermoplastic resin (K) by co-extrusion with the foaming expansion ratio of the foamed body (XF2) of at least twofold, and
• wherein the foamed laminate is formed by co-extrusion of the foamable composition based on olefin (X3) and the olefinic thermoplastic elastomer composition (Z3) wherein the foamable composition based on olefin (X3) foams by heat fusing to form the substrate layer of the foamed body (XF2), and
• said olefinic thermoplastic elastomer composition (Z3) is one which comprises, per 100 parts by weight of an olefinic thermoplastic elastomer (C), at least one kind of lubricant selected from the group consisting of 0.5-25 parts by weight of an organopolysiloxane (D), 0.5-10 parts by weight of a fluorine-containing polymer (E), 0.5-10 parts by weight of an antistatic agent (F), 0.01-5 parts by weight of a fatty acid amide, 0.01-5 parts by weight of a metal soap, 0.01-5 parts by weight of an ester, 0.01-5 parts by weight of calcium carbonate and 0.01-5 parts by weight of a silicate, each in a proportion given above, and further comprises a polyolefin resin (G) in an amount of 5-200 parts by weight.

A foamed laminate based on olefin in which a substrate layer is laminated with a non-foamed skin layer, wherein the foamed laminate is a co-extruded product in which the substrate layer and the skin layer are heat fused and the substrate layer is foamed by co-extrusion by multilayer extrusion molding machine, wherein

• said substrate layer comprises a foamed body (XF2) comprising an uncrosslinked olefinic thermoplastic elastomer composition (X2) comprising 100 parts by weight of an olefinic thermoplastic elastomer (J) and 1-20 parts by weight of an olefinic thermoplastic resin (K), and
• said skin layer comprises an olefinic thermoplastic elastomer composition (Z),
• wherein said olefinic thermoplastic elastomer (J) is one which is obtained by subjecting a mixture comprising 5-60 parts by weight of a polyolefin resin (j-1) and 40-95 parts by weight of an ethylene/α-olefin copolymer rubber (j-2) resulting from copolymerization of ethylene, an α-olefin and, optionally incorporated, a non-conjugated polyene, with said constituents (j-1) and (j-2) summing up to 100 parts by weight, to a dynamic heat treatment,
• said ethylene/α-olefin copolymer rubber 0-2) is one which has a Mooney viscosity ML1+4 (100° C.) of 10-250 and an ethylene content of 55-95 mole % and
• said olefinic thermoplastic resin (K) is one which has an olefin content of 50-100 mole % and a melt flow rate (ASTM D-1238-65T, 230° C., 2.16 kg load) of 0.01-2 g/10 min., and
• wherein the olefinic thermoplastic elastomer composition (X2)is one which has a compression set of 60% or less as determined according to JIS K 6262 (at 70° C., 22 hours) and a melt flow rate of 0.1 g/10 min. or higher as determined according to JIS K 7120 (at 230° C., 10 kg load), and
• wherein the foamed body (XF2) is formed by foaming a foamable composition based on olefin (X3) comprising 100 parts by weight of the olefinic thermoplastic elastomer (J), 1-20 parts by weight of the olefinic thermoplastic resin (K) and 0.5-20 parts by weight of an organic or an inorganic foaming agent of heat-decomposition type (B) per 100 parts by weight of total sum of the olefinic thermoplastic elastomer (J) and the olefinic thermoplastic resin (K) by co-extrusion with the foaming expansion ratio of the foamed body (XF2) of at least twofold, and
• wherein the foamed laminate is formed by co-extrusion of the foamable composition based on olefin (X3) and the olefinic thermoplastic elastomer composition (Z) wherein the foamable composition based on olefin (X3) foams by heat fusing to form the substrate layer of the foamed body (XF2), and
• said olefinic thermoplastic elastomer composition (Z) is one which comprises, per 100 parts by weight of an olefinic thermoplastic elastomer (C), at least one kind of lubricant (ZL) selected from the group consisting of 0.5-25 parts by weight of an organopolysiloxane (D), 0.5-10 parts by weight of a fluorine-containing polymer (E), 0.5-10 parts by weight of an antistatic agent (F), 5-200 parts by weight of a polyolefin resin (G), 0.01-5 parts by weight of a fatty acid amide, 0.01-5 parts by weight of a metal soap, 0.01-5 parts by weight of an ester, 0.01 -5 parts by weight of calcium carbonate and 0.01-5 parts by weight of a silicate, each in a proportion as given above.