Method for manufacturing fiber reinforced elastic sheet, apparatus for manufacturing the same and mold to be used
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United States of America Patent
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-
Jan 25, 1994
Grant Date -
N/A
app pub date -
Jul 10, 1991
filing date -
Jul 12, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for manufacturing a fiber reinforced elastic sheet by extruding and processing an elastomer containing staples by 25 volume % or less. The elastomer, which uniformly flows in a sheet width direction, passes through a slight clearance of a molding die in the vertical direction of the sheet, and then the elastomer flow is enlarged in the vertical direction of the sheet. A flow adjustment portion is provided in a passage of the elastomer to flow uniformly in the sheet width direction, and a weir portion is provided on the downstream side of the flow adjustment portion. A clearance Wo of an outlet in the vertical direction of the sheet, a clearance Wi formed by the weir portion in the vertical direction of the sheet and a distance l between the weir portion and the outlet have the relationship of Wo/Wi.gtoreq.2 l.gtoreq.3Wo 0.3 mm.ltoreq.Wi.ltoreq.5 mm.
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