US2017080640A1PendingUtilityA1

Delivery tube for irrigation and fertilization system and method for manufacturing same

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Assignee: RESPONSIVE DRIP IRRIGATION LLCPriority: Aug 16, 2013Filed: Dec 1, 2016Published: Mar 23, 2017
Est. expiryAug 16, 2033(~7.1 yrs left)· nominal 20-yr term from priority
Inventors:Janice K GouldDavid A. Conklin
B32B 2307/728B29C 66/73172B32B 38/0004B32B 1/08B29C 2793/009B29C 66/21B29C 66/232B29C 66/1122B29L 2031/7004B29C 65/08B32B 37/0076B29C 66/7294B29C 65/18B29C 66/71B29C 66/432B32B 2386/00B32B 2325/00B29C 66/83411A01G 25/02B29C 66/133B29C 65/02B32B 2597/00B29C 66/712
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Claims

Abstract

The invention is directed generally to improvements in irrigation and fertilization assessment and delivery. More specifically, embodiments of the invention provide an improved fluid delivery tube, method to manufacture such tube, and systems that include such tube. The delivery tube is beneficial at least because it minimizes the life cycle cost of a responsive delivery tube.

Claims

exact text as granted — not AI-modified
We claim: 
     
         1 . A method for manufacturing a delivery tube, the method comprising:
 preparing a hydrophilic polymer solution;   coating a portion of a substrate with the hydrophilic polymer solution to produce a responsive substrate;   drying the responsive substrate; and   welding the responsive substrate to a backer to form the delivery tube, the coating being a surface treatment, the welding not operating on the portion of the substrate coated with the hydrophilic polymer.   
     
     
         2 . The method of  claim 1 , wherein the substrate includes nonwoven polyethylene and the backer includes polyethylene. 
     
     
         3 . The method of  claim 2 , wherein the backer includes nonwoven polyethylene. 
     
     
         4 . The method of  claim 2 , wherein the backer includes metallocene polyethylene.

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