Apparatus for forming a continuous plastic sheet
First Claim
1. An apparatus for forming a sheet of fiber-reinforced plastic and laying said sheet on a prepared terrain surface, said apparatus comprising:
- a frame;
carrier feed means mounted on said frame for feeding a carrier web through said apparatus in a first direction;
resin and fiber depositing means mounted on said frame for depositing a layer of resin and fiber on said carrier web;
propulsion means associated with said apparatus to move said apparatus over said prepared terrain surface in a second direction opposite said first direction;
carrier guide means for guiding said carrier web from said apparatus to said terrain surface after deposition of said resin and fiber layer; and
pressure roller means mounted on said frame for reciprocating movement over said carrier means in a direction transverse to said first direction in contact with said resin and fiber layer prior to contact of the web with said carrier guide means.
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Accused Products
Abstract
Apparatus for lining an irrigation canal with a sheet of fiber-reinforced plastic includes structure for depositing a layer of resin and fiber on a web of flexible carrier material, partially curing the resin prior to laying the sheet in the canal, and then laying the sheet in the canal while the resin is flexible enough to conform to the shape of the canal. The final curing of the resin takes place after the sheet is placed in the canal. A predetermined-shape wrinkle is induced in the carrier web before it is laid into the canal to assist in conforming the sheet to the canal shape without causing randomly placed wrinkles so that the sheet is smooth in the canal. The apparatus forms the sheet and is propelled so that it travels along the length of the canal, fabricating a continuous sheet as it travels. In one embodiment the carrier is a flexible but nonelastic material like kraft paper, coated on one side with wax or other film to prevent saturation by the resin.
42 Citations
15 Claims
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1. An apparatus for forming a sheet of fiber-reinforced plastic and laying said sheet on a prepared terrain surface, said apparatus comprising:
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a frame; carrier feed means mounted on said frame for feeding a carrier web through said apparatus in a first direction; resin and fiber depositing means mounted on said frame for depositing a layer of resin and fiber on said carrier web; propulsion means associated with said apparatus to move said apparatus over said prepared terrain surface in a second direction opposite said first direction; carrier guide means for guiding said carrier web from said apparatus to said terrain surface after deposition of said resin and fiber layer; and pressure roller means mounted on said frame for reciprocating movement over said carrier means in a direction transverse to said first direction in contact with said resin and fiber layer prior to contact of the web with said carrier guide means. - View Dependent Claims (2)
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3. An apparatus for forming a sheet of fiber-reinforced plastic and laying said sheet on a prepared terrain surface, said apparatus comprising:
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a frame; carrier feed means mounted on said frame for feeding a carrier web through said apparatus in a first direction; resin and fiber depositing means mounted on said frame for depositing a layer of resin and fiber on said carrier web; propulsion means associated with said apparatus to move said apparatus over said prepared terrain surface in a second direction opposite said first direction; carrier guide means for guiding said carrier web from said apparatus to said terrain surface after deposition of said resin and fiber layer; and wrinkle-inducing means for causing a wrinkle to be formed in said carrier web associated with said frame and positioned to contact said carrier web having the resin and fiber layer on it prior to said web being laid on said terrain surface. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for forming a sheet of fiber-reinforced plastic and laying said sheet on a prepared terrain surface, said apparatus comprising:
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a frame; carrier feed means mounted on said frame for feeding a carrier web through said apparatus in a first direction, said carrier web being comprised of a predetermined number of strips of web material positioned adjacent one another; resin and fiber depositing means mounted on said frame for depositing a layer of resin and fiber on said carrier web; propulsion means associated with said apparatus to move said apparatus over said prepared terrain surface in a second direction opposite said first direction; and carrier guide means for guiding said carrier web from said apparatus to said terrain surface after deposition of said resin and fiber layer. - View Dependent Claims (14, 15)
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Specification