Title:
土木構築資材用プラスチック製格子材とその製造方法及び装置
Document Type and Number:
Japanese Patent JP4320103
Kind Code:
B2
Abstract:
The rods used are molecularly-orientated and of high tensile strength. They are laid in a single layer. Welding takes place cyclically, at successive adjacent crossing locations, using vibro-welding technology (friction welding). An Independent claim is included for the grid or mesh so produced. The vibro-welding system is also claimed Preferred features: 500-8000 intersections are welded simultaneously. Vibro-welders are operated simultaneously, applying uniform mechanical pressure, with the same amplitude (0.5-2.5 mm, preferably 1-2 mm) and oscillation frequency (60-300 Hz, preferably 150-180 Hz). Mutually-parallel rods run across the direction of feed (transverse rods). Others run parallel to each other and the feed (longitudinal rods). Their intersections are at 45 degrees to 90 degrees . Spacings side to side, are 10-100 mm, preferably 20-80 mm. Rods are located in numbers suitable to make grid or mesh 3-6 m wide, preferably 5 m wide. Total length is 25-500 m, preferably 50-100 m. Tensile strength is 300-800 N/mm<2>. Dimensions are quoted for square or rectangular rod cross sections, their sides ranging from 1 mm up to as much as 40 mm. Rods employed have embossments (to 0.5%-30% of their thickness) on top and/or underneath, for keying. Longitudinal rods are wider and/or thicker than transverse rods. In addition, fleece, fabric, knit or sheet is welded to one or both sides, using a hot iron, hot air or adhesive.
Inventors:
Georg Härten
Volkhard Mueller
Stefan Plewig
Werner Wehlemann
Volkhard Mueller
Stefan Plewig
Werner Wehlemann
Application Number:
JP2000086088A
Publication Date:
August 26, 2009
Filing Date:
March 27, 2000
Export Citation:
Assignee:
NAUE GMBH & CO., KG
International Classes:
B29C65/06; B09B1/00; E02D17/18; B29C55/06; B29C65/02; B29C65/08; B29C65/38; B29C65/56; B29C65/72; B29C70/00; B29D28/00; B32B3/14; B32B7/04; E01C3/06; E01F7/00; E02B3/12; E02B11/00; E02D3/00; E02D7/20; E02D17/20; E02D29/02; E02D31/08; E04H17/16; B29L31/10; B29C; B29D; E02B
Domestic Patent References:
| JP8041878A | ||||
| JP6270256A | ||||
| JP6270257A | ||||
| JP2041462A | ||||
| JP2129451U | ||||
| JP2122091U | ||||
| JP2082793U | ||||
| JP60114833U |
Attorney, Agent or Firm:
Tadashi Sato
Toshiya Sato
Toshiya Sato