| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an artificial Kaya-like material exhibiting a taste and an appearance closer to natural Kaya by a three-dimensional pattern with large unevenness and having excellent durability as compared with the natural Kaya, and a manufacturing method for the same.SOLUTION: In an artificial Kaya-like material R consisting of a cylindrical body 1 manufactured by extrusion molding of a thermoplastic resin, streak-like recesses and protrusions 11, 11 ... in the longitudinal direction are formed on the surface of the cylindrical body 1 irregularly, and the streak-like recesses and protrusions 11, 11 ... are formed while pushing down them to the side of the cylindrical body when fold-like projections G, G ..., around the cylindrical body, formed in the longitudinal direction in a die of an extruder M are introduced into in a sizing device S.</p> |
