Apparatus for forming a continuous plastic sheet
AssigneePMC, Inc.
InventorFrank E. Ives
Life of this patent
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AssigneePMC, Inc.
InventorFrank E. Ives
Estimating the term…
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.
An apparatus for forming a sheet of fiber-reinforced plastic and laying said sheet on a prepared terrain surface, said apparatus comprising:
An apparatus for forming a sheet of fiber-reinforced plastic and laying said sheet on a prepared terrain surface, said apparatus comprising:
An apparatus for forming a sheet of fiber-reinforced plastic and laying said sheet on a prepared terrain surface, said apparatus comprising:
Dependencies are inferred from the claim text.