Collapsible shipping container

Claim 2

A collapsible corrugated shipping container with a selfcontained corrugated liner comprising a. an outer container portion including four consecutively hinged outer side walls of predetermined height; b. top and bottom outer closing flaps hinged to said outer side walls; c. a liner portion including four separate inner side walls, each having a spacing extension means projecting laterally from one end thereof; d. L-shaped connecting means articulated at the other ends of said liner walls; e. fastening means joining inner legs of said connecting means to the extension means of adjacent liner walls and joining outer legs of said connecting means to each of said outer walls thereby mutually spacing said inner and outer walls; and f. top and bottom liner closing flaps articulated to said inner walls.

Claim 3

The collapsible container of claim 1, in which a. said inner and outer container portiOns are fabricated from heat sealable plastic sheet material; and b. said fastening means are welds.

Claim 4

A collapsible container as recited in claim 1, in which a. each of said extension means projects vertically beyond the edges of said liner walls and is substantially equal in height to the height of said outer walls.

Claim 5

A collapsible container as recited in claim 1, including a. beam forming portions included at free edge portions of said inner closing flaps; b. said beam forming portions including score lines defining four consecutively articulated panels which when folded upon themselves form a beam-like member of substantially square cross-section, and c. each of said spacer flaps has a plurality of cutouts forming locking tabs for receiving and retaining a folded free edge of said spacer flap in beam forming relation.

Claim 6

A collapsible container as recited in claim 4, in which a. the beam-like members formed by said beam forming portions are abutted in face-to-face relation.

Claim 7

In a collapsible container for storing and shipping articles having an outer portion of consecutively hinged outer side walls and end walls, each of said walls having top and bottom closing flaps; an improved closed inner container including a. a liner portion comprising four separate inner walls having top and bottom closing flaps hinged thereto; and b. connecting means articulated to each of said four inner walls simultaneously joining adjacent ends of said four walls permanently integrating said liner to said outer side walls; c. said connecting means including spacing means maintaining a predetermined spaced relationship between said inner and outer walls; d. each of said connecting means extends vertically beyond the upper and lower edges of said inner walls and laterally beyond the side edges of said inner walls.

Claim 8

In a collapsible container for storing and shipping articles having an outer portion of consecutively hinged outer side walls and end walls, each of said walls having top and bottom closing flaps; an improved closed inner container including a. a liner portion comprising four separate inner walls having top and bottom closing flaps hinged thereto; and b. connecting means articulated to each of said four inner walls simultaneously joining adjacent ends of said four walls permanently integrating said liner to said outer side walls; c. said connecting means including spacing means maintaining a predetermined spaced relationship between said inner and outer walls; d. each of said connecting means extends vertically beyond the upper and lower edges of said inner walls and laterally beyond the side edges of said inner walls.