Hollow structure plate, manufacturing method thereof, manufacturing device thereof, and sound absorbing structure plate
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 13, 2010
Grant Date -
Jun 16, 2005
app pub date -
Mar 26, 2003
filing date -
Mar 26, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Introduction guides 12 are provided above and below a sheet-introduction opening portion of a pressure-reduced chamber 10, and heating means 17 is provided between the introduction guides. Each resin sheet 3 is attracted and attached respectively to the circumferential surface of a corresponding emboss roller 11 by reducing pressure. Pins 112 of the emboss roller 11 are truncated cone-shaped. The ratio of the total area of the lower bases of the pins 112 to the area of the circumferential surface of the emboss roller is 0.5 or more. The rising angle .theta. of the pin side face, in the vertical plane including the central axis of the pins 112, is in the range from 50 degrees to 70 degrees. Furthermore, a multilayered hollow structure plate 140 is formed by attaching non-air-permeable sheets 130 onto both the front and back of a core member obtained by fusing together hollow protrusions 112 in two thermoplastic resin sheets. A sound absorbing material 150 is provided on at least one of the front and back side thereof, and small holes 114a opened in the multilayered hollow structure plate are formed in liner portions 114 and the non-air permeable sheet 130 only in the positions that matches the liner portions 114.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully