Title:
【発明の名称】凹凸模様を有するコンクリート面形成用化粧型及び凹凸模様を有するコンクリート面の形成方法
Document Type and Number:
Japanese Patent JP2787281
Kind Code:
B2
Abstract:
The present invention relates to a decorative mold (1) having an uneven pattern for forming a concrete surface with an uneven pattern by transfer. The present decorative mold (1) is made of a molded product of polypropylene type foamed particles having a density of 0.02 to 0.06 g/cm<3> and is formed with an uneven pattern (2) on one surface for forming a pattern on a concrete surface by transfer, and in the surface having the uneven pattern (2) for transfer, the total area, in terms of projected plane, of gap sections (4) present in all the projected plane of the decorative mold (1) accounts for less than 0.5% of all the area, in terms of projected plane, of the decorative mold (1). The maximum bending strength of the decorative mold (1) determined by pressing from the undersurface opposite to the side having the uneven pattern (2) is preferably 8.0 kgf/cm<2> or more, and the average particle diameter of the polypropylene type resin foamed particles (3) that are a raw material constituting the decorative mold is preferably 1 to 4 mm. The side walls are preferably spread out from the undersurface side of the decorative mold (1) toward the side of the surface (2) having the uneven pattern. Further the molded product of polypropylene type resin foamed particles that constitutes the decorative mold has preferably such a crystalline structure that the DSC curve obtained by subjecting the molded product to differential scanning calorimetry has a high-temperature peak the amount of heat of which is 13 to 30 J/g. The present decorative mold is obtained by loading a raw material, i.e., polypropylene type resin foamed particles (3) from a loader (15) into the cavity (12) of a mold (7), then introducing heating steam through the steam supply pipes (16) and (17) to heat the foamed particles and molding them.
Inventors:
MITSUMOTO MASANORI
KUWABARA HIDEKI
OOMORI KAZUHIKO
SHIOTANI AKIRA
KIKUCHI WATARU
KUWABARA HIDEKI
OOMORI KAZUHIKO
SHIOTANI AKIRA
KIKUCHI WATARU
Application Number:
JP25149894A
Publication Date:
August 13, 1998
Filing Date:
September 20, 1994
Export Citation:
Assignee:
JEI ESU PII KK
International Classes:
B28B7/00; E02D29/02; B28B7/34; E04G9/10; (IPC1-7): E04G9/10
Attorney, Agent or Firm:
Hosoi Isamu