Corrugated Roof Filler and Method for Making Same
AssigneePak-Lite, Inc.
InventorRichard H. Ford
Life of this patent
Estimating the term…
Abstract
A closure strip, for use with a corrugated material, includes an elongated flat thermoplastic sheet member and a plurality of thermoplastic undulations. The elongated flat thermoplastic sheet member has a bottom surface and an opposite top surface. The elongated flat thermoplastic sheet member defines a plurality of linearly disposed and spaced apart openings therethrough. A plurality of thermoplastic undulations is complimentary in shape to the corrugated material. Each undulation extends upwardly from the flat thermoplastic sheet member and defines a void that opens to a different one of the openings defined by the flat thermoplastic sheet member.
Claims18
A closure strip for use with a corrugated material, comprising:
- a. an elongated flat thermoplastic sheet member, having a bottom surface and an opposite top surface, that defines a plurality of linearly disposed and spaced apart openings therethrough;
- and
- b. a plurality of thermoplastic undulations that are complimentary in shape to the corrugated material, each undulation extending upwardly from the flat thermoplastic sheet member and defining a void that opens to a different one of the openings defined by the flat thermoplastic sheet member.
A device for making a closure strip, comprising:
- a. an undulated mold having a shape that is complimentary to a desired shape of the closure strip;
- and
- b. a thermoforming device configured to thermoform a thermoplastic sheet on the mold.
A method of making a closure strip for use with a corrugated material, comprising the steps of:
- a. placing an undulated mold on a surface of a thermoforming device, the undulated mold having a shape that is complimentary to a desired shape of the closure strip;
- b. heating a sheet of thermoplastic material until the thermoplastic material is suitable for thermoforming;
- c. when the thermoplastic material is suitable for thermoforming, applying the sheet of thermoplastic material to the undulated mold and applying a force to the sheet of thermoplastic material so as to cause the sheet of thermoplastic material to acquire the desired shape of the closure strip;
- d. cooling the sheet of thermoplastic material sufficiently so that the sheet of thermoplastic material maintains the desired shape of the closure strip;
- and
- e. removing the sheet from the mold.
Dependencies are inferred from the claim text.