Pipe with an outer wrap

Patent metadata

Field	Value
Publication number	US-10550963-B2
Application number	US-201715594859-A
Country	US
Kind code	B2
Filing date	May 15, 2017
Priority date	Jun 5, 2015
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

The embodiments of the present disclosure provide a method of applying an outer wrap to a corrugated pipe. The method comprises receiving a corrugated pipe that is cut to length, determining a wrap type to be applied to the corrugated pipe, determining a flow rate for applying a wrap of the wrap type based on a type of plastic used in the wrap, a type of fiber used in the wrap, and the wrap type, and applying a wrap made of the type of fiber and the type of plastic to the corrugated pipe using the determined flow rate.

First claim

What is claimed is:

1. A method of applying an outer wrap to a corrugated pipe comprising:
receiving a corrugated pipe that is cut to length;
determining a wrap type to be applied to the corrugated pipe;
determining a flow rate for applying a wrap of the wrap type based on a type of plastic used in the wrap, a type of fiber used in the wrap, and the wrap type;
extruding the type of plastic at the determined flow rate; and
applying a wrap made of the type of fiber and the type of plastic to the corrugated pipe using the determined flow rate, wherein applying the wrap includes pulling the wrap at a predetermined ratio relative to the determined flow rate.

2. The method of claim 1 , wherein the type of fiber comprises continuous strand fiber.

3. The method of claim 1 , wherein the type of fiber comprises short strands of fiber having a length ranging from about 0.25 inches to about 1 inch.

4. The method of claim 1 , wherein the wrap type is determined based on a required strength and a type of available fiber.

5. The method of claim 1 , wherein the wrap type includes one or more of: oriented continuous strand fiber, semi-oriented non-continuous fiber, or fiberglass impregnation.

6. The method of claim 1 , further comprising:
heating the type of plastic used in the wrap to a predetermined temperature.

7. The method of claim 6 , wherein the determined flow rate ranges from 15 to 25 feet per minute.

8. The method of claim 1 , wherein the corrugated pipe comprises:
an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests connected by corrugation valleys, the corrugation crests and valleys forming a continuous cross-section.

9. The method of claim 8 , wherein applying the wrap further comprises applying the wrap to span the corrugation crests.

10. The method of claim 1 , wherein the corrugated pipe comprises:
an axially extended bore defined by a corrugated outer wall, wherein the corrugated outer wall comprises plastic, and the corrugated outer wall has an axial cross-section that is continuous.

11. The method of claim 10 , wherein applying the wrap further comprises applying the wrap in an overlapping helical pattern to completely cover the outer wall of the corrugated pipe.

12. A method of applying an outer wrap to a corrugated pipe comprising:
receiving an uncut corrugated pipe from a pipe extrusion device;
determining a wrap type to apply to the uncut corrugated pipe;
determining a flow rate for applying a wrap of the wrap type based on a type of plastic used in the wrap, a type of fiber used in the wrap, and the wrap type;
extruding the type of plastic at the determined flow rate; and
applying a wrap made of the type of fiber and the type of plastic to the corrugated pipe using the determined flow rate, wherein applying the wrap includes pulling the wrap at a predetermined ratio relative to the determined flow rate.

13. The method of claim 12 , wherein the type of fiber comprises continuous strand fiber.

14. The method of claim 12 , wherein the type of fiber comprises short strands of fiber having a length ranging from about 0.25 inches to about 1 inch.

15. The method of claim 12 , wherein the wrap type is determined based on a required strength and a type of available fiber.

16. The method of claim 12 , wherein the wrap type includes one or more of: oriented continuous strand fiber, semi-oriented non-continuous fiber, or fiberglass impregnation.

17. The method of claim 12 , wherein applying the wrap comprises:
applying the wrap from a rotating wrap extrusion device that circumscribes an outer surface of the uncut corrugated pipe with the wrap.

18. The method of claim 17 , wherein the rotating wrap extrusion device pulls the wrap by rotating at a velocity that is greater than the flow rate based on the predetermined ratio relative to the flow rate.

19. The method of claim 12 , further comprising:
heating the type of plastic used in the wrap to a predetermined temperature.

20. The method of claim 19 , wherein the determined flow rate ranges from 15 to 25 feet per minute.

21. The method of claim 12 , wherein the corrugated pipe comprises:
an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests connected by corrugation valleys, the corrugation crests and valleys forming a continuous cross-section.

22. The method of claim 21 , wherein applying the wrap further comprises applying the wrap to span the corrugation crests.

23. The method of claim 12 , wherein the corrugated pipe comprises:
an axially extended bore defined by a corrugated outer wall, wherein the outer wall comprises plastic, and the corrugated outer wall has an axial cross-section that is continuous.

24. The method of claim 23 , wherein applying the wrap further comprises applying the wrap in an overlapping helical pattern to completely cover the outer wall of the corrugated pipe.

Assignees

• Advanced Drainage Syst

Inventors

• Vanhoose Bill Russell
• Piazza Nicholas James
• Vitarelli Ronald Robert
• Atchison Owen Michael
• Frost Tyler James

Classifications

• B29D23/00

  Producing tubular articles (B29D24/00 takes precedence) · CPC title

• F16L9/105

  of glass · CPC title

• F16L9/085

  Reinforced pipes · CPC title

• F16L9/06

  Corrugated pipes · CPC title

• F16L9/127 Primary

  the walls consisting of a single layer · CPC title