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A collapsible receptacle, such as a beverage cup, that is reconfigurable between expanded and collapsed configurations with an inner sleeve with first and second opposed major walls divided by opposed fold lines, an outer sleeve with first and second opposed major walls divided by opposed fold lines

A collapsible receptacle, such as a beverage cup, that is reconfigurable between expanded and collapsed configurations with an inner sleeve with first and second opposed major walls divided by opposed fold lines, an outer sleeve with first and second opposed major walls divided by opposed fold lines, and a liner retained by the inner and outer sleeves. The receptacle is retained in an expanded configuration when the opposed fold lines of the inner and outer sleeves are not aligned, and the receptacle can be collapsed when the opposed fold lines are aligned. A lid can be removably retained by a retaining ring. The opposed fold lines of the inner and outer sleeves can be disposed in groups, such as groups of two fold lines, so that the sleeves have opposed minor walls. The major walls can taper in thickness from their mid-portions to the opposed fold lines.

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1. A collapsible receptacle reconfigurable between an expanded configuration for retaining a volume of material and a collapsed configuration, the collapsible receptacle comprising: an inner sleeve with first and second opposed major walls divided by opposed fold lines;an outer sleeve engaged with t

1. A collapsible receptacle reconfigurable between an expanded configuration for retaining a volume of material and a collapsed configuration, the collapsible receptacle comprising: an inner sleeve with first and second opposed major walls divided by opposed fold lines;an outer sleeve engaged with the inner sleeve wherein the outer sleeve has first and second opposed major walls divided by opposed fold lines; anda liner retained by the inner and outer sleeves;wherein the receptacle can be retained in the expanded configuration with an open inner volume defined by the liner when the opposed fold lines of the inner sleeve are not aligned with the opposed fold lines of the outer sleeve and wherein the receptacle can be reconfigured to the collapsed configuration when the opposed fold lines of the inner sleeve and the outer sleeve are aligned and wherein the inner sleeve is formed in a substantially flat configuration. 2. A collapsible receptacle reconfigurable between an expanded configuration for retaining a volume of material and a collapsed configuration, the collapsible receptacle comprising: an inner sleeve with first and second opposed major walls divided by opposed fold lines;an outer sleeve engaged with the inner sleeve wherein the outer sleeve has first and second opposed major walls divided by opposed fold lines; anda liner retained by the inner and outer sleeves;wherein the receptacle can be retained in the expanded configuration with an open inner volume defined by the liner when the opposed fold lines of the inner sleeve are not aligned with the opposed fold lines of the outer sleeve and wherein the receptacle can be reconfigured to the collapsed configuration when the opposed fold lines of the inner sleeve and the outer sleeve are aligned and wherein the first and second major walls of at least the inner sleeve or the outer sleeve taper in thickness from mid-portions of the first and second major walls toward the opposed fold lines. 3. A collapsible receptacle reconfigurable between an expanded configuration for retaining a volume of material and a collapsed configuration, the collapsible receptacle comprising: an inner sleeve with first and second opposed major walls divided by opposed fold lines;an outer sleeve engaged with the inner sleeve wherein the outer sleeve has first and second opposed major walls divided by opposed fold lines; anda liner retained by the inner and outer sleeves;wherein the receptacle can be retained in the expanded configuration with an open inner volume defined by the liner when the opposed fold lines of the inner sleeve are not aligned with the opposed fold lines of the outer sleeve and wherein the receptacle can be reconfigured to the collapsed configuration when the opposed fold lines of the inner sleeve and the outer sleeve are aligned;wherein the inner and outer sleeves are generally cylindrical with open upper and lower ends when the receptacle is in the expanded configuration and wherein the opposed fold lines of the inner and outer sleeves are substantially longitudinal. 4. The collapsible receptacle of claim 3 wherein the receptacle comprises a beverage cup. 5. The collapsible receptacle of claim 3 further comprising a lid structure removably and replaceably engageable with the liner to enclose the open inner volume. 6. The collapsible receptacle of claim 3 wherein the opposed fold lines of the inner and outer sleeves comprise living hinges. 7. The collapsible receptacle of claim 3 wherein the opposed fold lines of the outer sleeve are disposed in groups with at least two fold lines to a first side of the outer sleeve and at least two fold lines to a second side of the outer sleeve opposite the first side whereby the outer sleeve has opposed minor walls. 8. The collapsible receptacle of claim 7 wherein the opposed fold lines of the inner sleeve are disposed in groups with at least two fold lines to a first side of the inner sleeve and at least two fold lines to a second side of the inner sleeve opposite the first side whereby the inner sleeve has opposed minor walls. 9. The collapsible receptacle of claim 3 wherein the first and second major walls of at least the inner sleeve or the outer sleeve taper in thickness from mid-portions of the first and second major walls toward the opposed fold lines. 10. The collapsible receptacle of claim 3 wherein the opposed fold lines of the inner sleeve are disposed in groups with at least two fold lines to a first side of the inner sleeve and at least two fold lines to a second side of the inner sleeve opposite the first side whereby the inner sleeve has opposed minor walls. 11. The collapsible receptacle of claim 10 wherein the first and second major walls of at least the inner sleeve or the outer sleeve taper in thickness from mid-portions of the first and second major walls toward the opposed fold lines. 12. The collapsible receptacle of claim 3 further comprising fastening formations disposed on the inner sleeve and wherein the liner is coupled to the inner sleeve by the fastening formations. 13. The collapsible receptacle of claim 3 wherein the liner comprises a flexible sleeve of material with sealed side edges, a sealed bottom edge, and an open top. 14. The collapsible receptacle of claim 13 wherein the liner has a rim portion adjacent to the open top of the liner and wherein the rim portion is coupled to the inner sleeve. 15. The collapsible receptacle of claim 14 wherein the liner and the inner sleeve are formed as separate components. 16. The collapsible receptacle of claim 3 wherein the open inner volume has a top and further comprising a flap retained by the inner or outer sleeve wherein the flap can be disposed against the outer sleeve when the collapsible receptacle is in the expanded configuration and wherein the flap can be folded over the top of the open inner volume when the collapsible receptacle is in the collapsed configuration. 17. The collapsible receptacle of claim 16 wherein the flap comprises an extension of the liner. 18. The collapsible receptacle of claim 16 further comprising a retaining mechanism for selectively retaining the flap against the outer sleeve. 19. The collapsible receptacle of claim 3 wherein the inner sleeve and the outer sleeve are relatively rotatable from a first relative orientation wherein the opposed fold lines of the inner sleeve are not aligned with the opposed fold lines of the outer sleeve to a second relative orientation wherein the opposed fold lines of the inner sleeve are aligned with the opposed fold lines of the outer sleeve. 20. The collapsible receptacle of claim 19 wherein the first relative orientation and the second relative orientation are separated by approximately 90 degrees of rotation of the outer sleeve relative to the inner sleeve. 21. The collapsible receptacle of claim 3 wherein the opposed fold lines of the inner and outer sleeves are longitudinal. 22. A collapsible receptacle reconfigurable between an expanded configuration for retaining a volume of material and a collapsed configuration, the collapsible receptacle comprising: an inner sleeve with first and second opposed major walls divided by opposed fold lines;an outer sleeve engaged with the inner sleeve wherein the outer sleeve has first and second opposed major walls divided by opposed fold lines;a liner retained by the inner and outer sleeves;wherein the receptacle can be retained in the expanded configuration with an open inner volume defined by the liner when the opposed fold lines of the inner sleeve are not aligned with the opposed fold lines of the outer sleeve and wherein the receptacle can be reconfigured to the collapsed configuration when the opposed fold lines of the inner sleeve and the outer sleeve are aligned;a lid structure removably and replaceably engageable with the liner to enclose the open inner volume; anda retaining ring disposed on the liner for engaging and retaining the lid structure. 23. A collapsible receptacle reconfigurable between an expanded configuration for retaining a volume of material and a collapsed configuration, the collapsible receptacle comprising: an inner sleeve with first and second opposed major walls divided by opposed fold lines;an outer sleeve rotatably engaged with the inner sleeve wherein the outer sleeve has first and second opposed major walls divided by opposed fold lines;a liner retained by the inner and outer sleeves; anda rotation limiting formation on the inner sleeve and a rotation limiting formation on the outer sleeve wherein the rotation limiting formations prevent over-rotation of the inner sleeve relative to the outer sleeve;wherein the receptacle can be retained in the expanded configuration with an open inner volume defined by the liner when the opposed fold lines of the inner sleeve are not aligned with the opposed fold lines of the outer sleeve and wherein the receptacle can be reconfigured to the collapsed configuration when the opposed fold lines of the inner sleeve and the outer sleeve are aligned. 24. The collapsible receptacle of claim 23 wherein one rotation limiting formation comprises at least one protuberance from the inner sleeve or the outer sleeve and wherein one rotation limiting formation comprises a delimited channel on the other of the inner sleeve or the outer sleeve. 25. A collapsible beverage cup that is reconfigurable between an expanded configuration for retaining a volume of material and a collapsed configuration, the collapsible beverage cup comprising: an inner sleeve with first and second opposed major walls divided by opposed, longitudinal fold lines;an outer sleeve engaged with the inner sleeve wherein the outer sleeve has first and second opposed major walls divided by opposed, longitudinal fold lines wherein the opposed fold lines of the outer sleeve are disposed in groups with at least two fold lines to a first side of the outer sleeve and at least two fold lines to a second side of the outer sleeve opposite the first side whereby the outer sleeve has opposed minor walls; anda liquid-tight liner retained by the inner and outer sleeves;wherein the beverage cup can be retained in the expanded configuration with an open inner volume defined by the liner when the opposed fold lines of the inner sleeve are not aligned with the opposed fold lines of the outer sleeve and wherein the beverage cup can be reconfigured to the collapsed configuration when the opposed fold lines of the inner sleeve and the outer sleeve are aligned. 26. The collapsible beverage cup of claim 25 wherein the opposed fold lines of the inner sleeve are disposed in groups with at least two fold lines to a first side of the inner sleeve and at least two fold lines to a second side of the inner sleeve opposite the first side whereby the inner sleeve has opposed minor walls. 27. The collapsible beverage cup of claim 25 wherein the first and second major walls of at least the inner sleeve or the outer sleeve taper in thickness from mid-portions of the first and second major walls toward the opposed fold lines.