PURPOSE: To mass-produce decorated corrugated sheet having a protective layer, which fully protects patterns, by a method wherein a second synthetic resin sheet is extrusion-formed so as to laminate to a transparent first synthetic resin film, onto which the patterns are reverse-printed, in order to be formed in the shape of a corrugated sheet.
CONSTITUTION: Under the state that a reverse-printed film 1, which is produced by printing pattern 12 on a transparent first synthetic film 11, is prepared, a second synthetic resin sheet 2 is extrusion-formed so as to put on the reverse- printed film 1 in order to be thermowelded together by being pressurized with rolls 4. The resultant laminated body 3 is turned to be a corrugated sheet having the desired crosssectional shape by passing through a group of odd-shaped rolls and dies 6. As the first synthetic resin film, an acrylic resin film, which is excellent in surface physical properties such as weatherability, stain resistance, wear resistance or the like, is preferable and its preferable thickness is from 20 to 500μm for satisfactory protection of pattern. The proper second synthetic resin is polyvinyl chloride, acrylic resin or the like and extruded in the form of a sheet 1W10mm in thickness.
ENOI TOSHIHARU
ONO HARUO
| JPS56125932U | 1981-09-25 | |||
| JPS59123656A | 1984-07-17 |
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