Substantially rigid collapsible liner and flexible gusseted or non-gusseted liners and methods of manufacturing the same and methods for limiting choke-off in liners

Patent metadata

Field	Value
Publication number	US-9522773-B2
Application number	US-201013382743-A
Country	US
Kind code	B2
Filing date	Jul 9, 2010
Priority date	Jul 9, 2009
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

The present disclosure relates to a blow-molded, rigid collapsible liner that can be suitable particularly for smaller storage and dispensing systems. The rigid collapsible liner may be a stand-alone liner, e.g., used without an outer container, and may be dispensed from a fixed pressure dispensing can. Folds in the rigid collapsible liner may be substantially eliminated, thereby substantially reducing or eliminating the problems associated with pinholes, weld tears, and overflow. The present disclosure also relates to flexible gusseted or non-gusseted liners, which is scalable in size and may be used for storage of up to 200 L or more. The flexible gusseted liner may be foldable, such that the liner can be introduced into a dispensing can. The liner can be made of thicker materials, substantially reducing or eliminating the problems associated pinholes, and may include more robust welds, substantially reducing or eliminating the problems associated weld tears.

First claim

We claim:

1. A liner-based storage system comprising:
an overpack;
a liner configured for containment and dispensation of an ultrapure liquid, the liner comprising a substantially rigid liner wall defining an interior cavity of the liner, the rigid liner wall comprising polyethylene naphthalate (PEN) having a thickness in the range of 0.1 mm to 1.0 mm, the liner being collapsible at a pressure in the range of 3 psi to about 20 psi to dispense fluid from within the interior cavity; and
a dip tube that extends into the interior cavity of the liner,
wherein the fluid is pressure dispensed from the interior cavity by applying a pressure between the overpack and the liner,
wherein a dispensability of the liner is greater than 90%, and
wherein the liner comprises one or more folds or indentations in the substantially rigid liner wall to control a collapsing pattern of the liner wall during dispense of fluid from within the interior cavity.

2. The liner-based storage system of claim 1 , wherein the liner is blow-molded.

3. The liner-based storage system of claim 1 , wherein one or more folds or indentations in the substantially rigid liner wall controls the collapsing of the liner such that the liner collapses in a predetermined pattern during dispense of fluid from within the interior cavity.

4. The liner-based storage system of claim 1 , wherein the one or more folds or indentations in the substantially rigid liner wall control the collapsing pattern to provide a channel within the interior cavity for dispensing fluid from within the interior cavity to substantially eliminate choke-off.

5. The liner-based storage system of claim 1 , further comprising a sump area generally at the bottom of the liner to increase dispensability.

6. The liner-based storage system of claim 1 , wherein the liner further comprises choke-off prevention means.

7. The liner-based storage system of claim 1 , wherein the liner wall comprises metal.

8. The liner-based storage system of claim 1 , wherein the overpack comprises an ultraviolet (UV) blocker.

9. The liner-based storage system of claim 1 , wherein the overpack is formed of two operably connectable parts.

10. The liner-based storage system of claim 9 , wherein the two operably connectable parts are connected by snap-fit.

11. The liner-based storage system of claim 1 , wherein the liner wall has a thickness of less than 3 mm.

12. The liner-based storage system of claim 1 , wherein the liner wall comprises a layer of barrier enhancing material.

13. The liner-based storage system of claim 1 , wherein the ultrapure liquid is a photoresist.

14. The liner-based storage system of claim 1 , wherein the liner is a three-dimensional liner.

15. The liner-based storage system of claim 1 , wherein the one or more folds or indentations is a plurality of folds or indentations, the plurality of folds or indentations crossing each other.

16. The liner-based storage system of claim 13 , wherein the three-dimensional liner is blow-molded into a container having a negative image of the desired liner.

17. A liner-based storage system comprising:
an overpack;
a liner configured for containment and dispensation of an ultrapure liquid, the liner comprising a substantially rigid liner wall defining an interior cavity of the liner, the rigid liner wall comprising polyethylene naphthalate (PEN) having a thickness in the range of 0.1 mm to 1.0 mm, the liner being collapsible at a pressure in the range of 3 psi to about 20 psi to dispense fluid from within the interior cavity; and
a dip tube that extends into the interior cavity of the liner,
wherein the fluid is pressure dispensed from the interior cavity by applying a pressure between the overpack and the liner,
wherein a dispensability of the liner is greater than 90%, and
wherein the liner comprises one or more folds or indentations in the substantially rigid liner wall to deter random collapsing of the liner during dispense of fluid from within the interior cavity.

18. The liner-based storage system of claim 17 , further comprising a sump area generally at the bottom of the liner to increase dispensability.

19. The liner-based storage system of claim 17 , wherein the liner further comprises choke-off prevention means.

20. The liner-based storage system of claim 17 , wherein the liner wall comprises metal.

21. The liner-based storage system of claim 17 , wherein the overpack comprises an ultraviolet (UV) blocker.

22. The liner-based storage system of claim 17 , wherein the liner wall has a thickness of less than 3 mm.

23. The liner-based storage system of claim 17 , wherein the liner is a three-dimensional liner.

24. The liner-based storage system of claim 17 , wherein the liner wall comprises a layer of barrier enhancing material.

25. The liner-based storage system of claim 17 , wherein the ultrapure liquid is a photoresist.

26. The liner-based storage system of claim 17 , wherein the one or more folds or indentations is a plurality of folds or indentations, the plurality of folds or indentations crossing each other.

Assignees

• Tom Glenn
• Baum Thomas H
• Kusz Matthew
• Menning Joseph
• Nelson Greg
• Lee Dongyun
• Liu Wei
• Kim Kanghyun
• Boggs Karl
• Chism Richard
• Entegris Inc

Inventors

• Tom Glenn
• Baum Thomas H
• Kusz Matthew
• Menning Joseph
• Nelson Greg
• Lee Dongyun
• Liu Wei
• Kim Kanghyun
• Boggs Karl
• Chism Richard

Classifications

• B65D83/62

  by membranes, bags or the like · CPC title

• B05B11/10

  Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle · CPC title

• B65D2231/004

  comprising rods or tubes provided with radial openings, ribs or the like, e.g. dip-tubes, spiral rods · CPC title

• B65D83/00

  Containers or packages with special means for dispensing contents (dispensing means incorporated in closures B65D47/00) · CPC title

• B05B11/026

  Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container · CPC title