Tape-wrapped multilayer tubing and methods for making the same
First Claim
1. A substantially hermetic tubing comprising:
- a. an inner tube; and
b. a diffusion barrier tape laminate substantially hermetically coupled to the outside circumference of the inner tube for substantially the whole length of the inner tube, including;
i. a diffusion barrier material;
ii. a first layer of thermoplastic material applied to a first side of the diffusion barrier material;
iii. a second layer of thermoplastic material applied to a second side of the diffusion barrier material, and;
iv. the first layer and the second layer of thermoplastic material are sealed together;
wherein the diffusion barrier tape laminate more than completely surrounds the circumference of the inner tube and provides a strip of overlapping diffusion barrier tape laminate parallel with the length of the inner tube, further wherein the strip of overlapping diffusion barrier tape laminate couples with underlying diffusion barrier tape laminate and seals the barrier tape laminate around the inner tubing.
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Accused Products
Abstract
The multi-layer tape wrapped tubing for effectively impeding the diffusion of vapor is made in a continuous in-line process and has three distinct layers: an inner tubing layer, a middle diffusion barrier layer and an outer jacketing layer. The inner tubing layer comes into contact with liquid and vapor. Vapor that might ordinarily diffuse through the tubing is impeded by the diffusion barrier layer. The diffusion barrier layer is a laminate comprising a diffusion barrier film with a very low vapor diffusion rate sandwiched between layers of thermoplastic. The diffusion barrier layer is wrapped around the inner tubing one or more times. The outer jacket layer is a polymeric jacket which is extruded onto the diffusion barrier layer wrapped inner tubing.
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Citations
24 Claims
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1. A substantially hermetic tubing comprising:
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a. an inner tube; and b. a diffusion barrier tape laminate substantially hermetically coupled to the outside circumference of the inner tube for substantially the whole length of the inner tube, including; i. a diffusion barrier material; ii. a first layer of thermoplastic material applied to a first side of the diffusion barrier material; iii. a second layer of thermoplastic material applied to a second side of the diffusion barrier material, and; iv. the first layer and the second layer of thermoplastic material are sealed together; wherein the diffusion barrier tape laminate more than completely surrounds the circumference of the inner tube and provides a strip of overlapping diffusion barrier tape laminate parallel with the length of the inner tube, further wherein the strip of overlapping diffusion barrier tape laminate couples with underlying diffusion barrier tape laminate and seals the barrier tape laminate around the inner tubing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A substantially hermetic tubing comprising:
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a. an inner tube; and b. a diffusion barrier tape laminate substantially hermetically coupled to the outside circumference of the inner tube for substantially the whole length of the inner tube, including; i. a diffusion barrier material; ii. a first layer of thermoplastic material applied to a first side of the diffusion barrier material; iii. a second layer of thermoplastic material applied to a second side of the diffusion barrier material, and; iv. the first layer and the second layer of thermoplastic material are sealed together; wherein the diffusion barrier tape laminate does not seal to the inner tubing, wherein the inner tubing is able to slide within the diffusion barrier tape laminate.
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20. A substantially hermetic tubing comprising:
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a. an inner tube; and b. a diffusion barrier tape laminate substantially hermetically coupled to the outside circumference of the inner tube for substantially the whole length of the inner tube, including; i. a diffusion barrier material; ii. a first layer of thermoplastic material applied to a first side of the diffusion barrier material; iii. a second layer of thermoplastic material applied to a second side of the diffusion barrier material, and; iv. the first layer and the second layer of thermoplastic material are sealed together; wherein the layers of thermoplastic coupled to the diffusion barrier tape are low density polyethylene.
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21. A substantially hermetic tubing comprising:
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a. an inner tube; and b. a diffusion barrier tape laminate substantially hermetically coupled to the outside circumference of the inner tube for substantially the whole length of the inner tube, including; i. a diffusion barrier material; ii. a first layer of thermoplastic material applied to a first side of the diffusion barrier material; iii. a second layer of thermoplastic material applied to a second side of the diffusion barrier material, and; iv. the first layer and the second layer of thermoplastic material are sealed together; wherein the diffusion barrier tape laminate is wider than the circumference of the inner tube, further wherein an extra width of the diffusion barrier tape laminate meets at one spot of the inner tube and extends perpendicularly therefrom, creating two perpendicularly extending flags, and further wherein a seal exists between the perpendicularly extending flags. - View Dependent Claims (22, 23)
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24. A substantially hermetic tubing comprising:
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a. an inner tube; and b. a diffusion barrier tape laminate substantially hermetically coupled to the outside circumference of the inner tube for substantially the whole length of the inner tube, including; i. a diffusion barrier material; ii. a first layer of thermoplastic material applied to a first side of the diffusion barrier material; iii. a second layer of thermoplastic material applied to a second side of the diffusion barrier material, and; iv. the first layer and the second layer of thermoplastic material are sealed together; wherein the diffusion barrier tape laminate is wound in a helical fashion around the circumference of the inner tube, wherein the diffusion barrier tape partially overlaps itself as it is wound down the length of the inner tube and is configured with an overlap area, further wherein the overlapping barrier tape laminate seals the barrier tape laminate around the inner tubing, and wherein an additional layer of diffusion barrier tape laminate is wound in the opposite direction around a once-wrapped inner tubing.
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Specification