Bulk material container

Claim 2

A container comprising a shell having an Enclosed wall portion and a bottom portion, a said shell being open at the top edge of the wall portion of the shell, a liner having a wall portion telescoped within the wall portion of the shell, a plurality of flaps integrally formed on the top edge of the wall portion of the liner and folded down over the top edge of the wall portion of the shell, and means for securing the plurality of flaps to the outside of the wall portion of the shell.

Claim 3

A container as claimed in claim 1 wherein there is included a layer of adhesive securing the flaps to the outside of the wall portion of the shell.

Claim 4

A container as claimed in claim 1 wherein the securing means includes a reinforcing ring tightly secured around the container in engagement with the plurality of flaps.

Claim 5

A container as claimed in claim 1 wherein the inner surfaces of the container as well as a portion of the exposed outer surfaces of the flaps are coated with a release coating to aid in emptying the contents of the container by minimizing adherence of the contents to the container walls.

Claim 6

A container as claimed in claim 4 wherein said release coating includes a polymerized silicone.

Claim 7

A container as claimed in claim 2 wherein said release coating includes a polyvinylidene chloride.

Claim 8

A container as claimed in claim 1 wherein the liner includes an elongated member having at least four serially joined planar panels folded to bring the ends of the elongated member in juxtaposition, and a tape joint securing the juxtapositioned ends of the member, said tape joint being positioned between the liner and the shell.

Claim 9

A container as claimed in claim 1 including a top cap enclosing the top and fitted over said flaps to protect the contents of the container and to aid in stacking similar containers on top of each other.

Claim 10

A bulk material container comprising a shell formed from an elongated wall-forming blank of material fixedly attached together and scored to form a series of wall panels, a liner formed from an elongated wall-forming blank of material fixedly attached together and sized and scored to fit within said shell, said liner having formed on the upper portion thereof a plurality of fold-down flaps, first means, associated with said shell and said liner for bonding said shell and liner together, second means, associated with said shell and said fold-down flaps, for bonding said flaps to said shell after said flaps have been folded down and positioned in juxta-position to the upper portion of said shell, third means, associated with said folded-down flaps, for bonding said flaps to said shell in addition to said second bonding means and for reinforcing the upper portion of the container from distortion caused by upending the container to remove the contents thereof, and means, associated with the container, for closing at least the bottom end of the container.

Claim 11

A bulk material container comprising a shell formed from an elongated wall-forming blank of material fixedly attached together and scored to form a series of wall panels, a liner formed from an elongated wall-forming blank of material fixedly attached together and sized and scored to fit within said shell, said liner having formed on the upper portion thereof a plurality of fold-down flaps, first means, associated with said shell and said liner for bonding said shell and liner together, second means, associated with said shell and said fold-down flaps, for bonding said flaps to said shell after said flaps have been folded down and positioned in juxta-position to the upper portion of said shell, third means, associated with said folded-down flaps, for bonding said flaps to said shell in addition to said second bonding means and for reinforcing the upper portion of the container from distortion caused by upending the container to remove the contents thereof, and means, associated with the container, for closing at least the bottom end of the container.

Claim 12

A bulk material container as defined in claim 7 wherein said first and second bonding means comprising an adhesive and said third bonding means comprises a strap surrounding the folded down flaps and positioned against the flaps.

Claim 13

A bulk material container as defined in claim 9 wherein said shell wall-forming blank is fixedly attached together by means of overlapping manufacturer''s joint flaps formed on each end of the elongated blank and fixed to the ends of the shell wall-forming blank.

Claim 14

A bulk material container as defined in claim 9 including an adhesive tape fixedly attaching opposite ends of said liner wall-forming blank together, said adhesive tape being on the outer surface of the liner.

Claim 15

The bulk material container as defined in claim 9 wherein the means for closing the bottom end of the container includes a plurality of flaps hingedly attached to the shell.

Claim 16

The bulk material container as defined in claim 9 including closing means on the top of the container.

Claim 17

The bulk material container as defined in claim 14 whereIn the top closing means comprises a removable top cap positioned over the top of the container and surrounding the fold-down flaps.

Claim 18

The bulk material container as defined in claim 9 including a release coating formed on the inside surfaces of the container.

Claim 19

The bulk material container as defined in claim 16 wherein said release coating includes a silicone polymer.

Claim 20

The bulk material container as defined in claim 16 wherein said release coating includes a polyvinylidene chloride.

Claim 21

A bulk material container comprising four serially joined outer side panels; a manufacturer''s joint flap hinged on one end of the serially joined outer side panels and secured to the panel at the other end of the serially joined outer side panels; four bottom flaps hinged on bottom edges of the respective serially joined outer side panels, said bottom panels being folded and secured to form a bottom on the container; four serially joined inner side panels telescoped with the outher side panels; an adhesive tape extending over outer surface portions of both end panels at the ends of the inner side panels for securing the ends of the inner side panels together; a layer of adhesive bonding each of the inner side panels to each of the outer side panels; four reinforcing flaps; four hinge portions integrally formed between the upper edges of the respective inner side panels and the respective reinforcing flaps; each of the hinge portions and the reinforcing flaps folded over the upper edge of a respective outer side panel; a layer of adhesive bonding each of the reinforcing flaps to outer upper surface portions of each of the outer side panels; a steel band tightly surrounding the upper portion of the container and engaging the reinforcing flaps; a release coating of non-adherent material over the inner surfaces of the inner side panels, the hinge portions, and a portion of the exposed surface of each of the reinforcing flaps contiguous to the inner side panels; and a cover having a top panel and four cover side panels secured to telescope over the reinforcing flaps; said outer side panels, joint flap, bottom flaps, inner side panels, reinforcing flaps and cover being formed from corregated paperboard.

Claim 22

A bulk material container comprising four serially joined outer side panels; a manufacturer''s joint flap hinged on one end of the serially joined outer side panels and secured to the panel at the other end of the serially joined outer side panels; four bottom flaps hinged on bottom edges of the respective serially joined outer side panels, said bottom panels being folded and secured to form a bottom on the container; four serially joined inner side panels telescoped with the outher side panels; an adhesive tape extending over outer surface portions of both end panels at the ends of the inner side panels for securing the ends of the inner side panels together; a layer of adhesive bonding each of the inner side panels to each of the outer side panels; four reinforcing flaps; four hinge portions integrally formed between the upper edges of the respective inner side panels and the respective reinforcing flaps; each of the hinge portions and the reinforcing flaps folded over the upper edge of a respective outer side panel; a layer of adhesive bonding each of the reinforcing flaps to outer upper surface portions of each of the outer side panels; a steel band tightly surrounding the upper portion of the container and engaging the reinforcing flaps; a release coating of non-adherent material over the inner surfaces of the inner side panels, the hinge portions, and a portion of the exposed surface of each of the reinforcing flaps contiguous to the inner side panels; and a cover having a top panel and four cover side panels secured to telescope over the reinforcing flaps; said outer side panels, joint flap, bottom flaps, inner side panels, reinforcing flaps and cover being formed from corregated paperboard.