Hot melt adhesive composition
A hot melt adhesive composition contains a 1-butene homopolymer, an ethylene-based polymer having a melting point of lower than 80° C., an α-olefin copolymer having a melting point 80° C. or higher, a tackifying resin, wax, and a liquid softener, in which the ethylene-based polymer includes at least one type of copolymer selected from the group consisting of an ethylene-α-olefin copolymer and an ethylene-vinyl acetate copolymer.
1. A hot melt adhesive composition, containing:
a 1-butene homopolymer;
an ethylene-based polymer having a melting point of lower than 80° C.;
an α-olefin copolymer having a melting point of 80° C. or higher;
a tackifying resin;
wax; and
a liquid softener,
wherein the ethylene-based polymer includes at least one type of copolymer selected from the group consisting of an ethylene·α-olefin copolymer and an ethylene· vinyl acetate copolymer.
2. The hot melt adhesive composition according to claim 1 ,
wherein the melting point of the ethylene-based polymer is 65° C. or lower.
3. The hot melt adhesive composition according to claim 1 ,
wherein the α-olefin copolymer having a melting point of 80° C. or higher includes a propylene·α-olefin copolymer having a melting point of 80° C. or higher.
4. The hot melt adhesive composition according to claim 1 ,
wherein the tackifying resin includes a hydrogenated tackifying resin.
5. The hot melt adhesive composition according to claim 1 ,
wherein the wax includes polypropylene-based wax.
6. The hot melt adhesive composition according to claim 1 ,
wherein a melt viscosity at 180° C. is 100 Pa·s or less.
7. A precoated skin material for an automobile interior, comprising:
a hot melt adhesive layer containing the hot melt adhesive composition according to claim 1 ; and
a skin material for an automobile interior.
8. An automobile interior material in which the precoated skin material for an automobile interior according to claim 7 and a molded product for an automobile interior are at least bonded to each other.