# US 5,702,340 A · Method of manufacture of a glued bottom bulk container

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- Number: US 5,702,340 A
- Document ID: US5702340A
- Status: Granted
- Kind: A
- Application number: 08/566,076
- Filed: 1995-12-01
- Granted: 1997-12-30
- Earliest claimed: 1993-12-02
- Assignees: Super Sack Mfg. Corp.
- Inventors: Norwin C. Derby
- Web page: https://patentgrep.com/patent/US5702340A

## CPC

- B65D 88/1612: {Flexible intermediate bulk containers [FIBC]}
- B31B 2105/0022: {Making boxes from tubular webs or blanks, e.g. with separate bottoms, including tube or bottom forming operations}
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B31B: MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER (making wound articles, e.g. wound tubes, B31C; combined making and filling B65B)

## Abstract

A process for the construction of a bulk container including a glued bottom portion. A sidewall blank having a hollow tubular configuration with an upper and lower portion is suspended in the shape of the desired container and is positioned over a bottom wall located on a raised work area. Adhesive or glue is applied to either the bottom wall and/or the sidewall in areas where the sidewall blank will be permanently in contact with the bottom wall. The sidewall blank is lowered into contact with the bottom wall such that the lower portion of the sidewall blank is located below the work area and the upper portion is located above the work area. The sidewall blank is secured to the bottom wall by folding the upper portion of the sidewall blank over the bottom wall thereby contacting the adhesive or glue.

## Claims

### Claim 1

A method of manufacturing a flexible bulk container having a sidewall and bottom wall, said method comprising the steps of:
(a) supplying a sidewall blank having a substantially hollow tubular configuration, said sidewall blank having an upper portion and a lower portion and an inside and an outside, said upper portion being cut in a sawtooth configuration including a plurality of adjacent triangular shaped flaps;
(b) supplying a bottom wall of octagonal horizontal cross-sectional shape;
(c) placing the bottom wail on a raised work area;
(d) applying adhesive to the bottom wall;
(e) positioning the sidewall blank over the raised work area and lowering the sidewall blank such that the lower portion of the sidewall blank is located below the work area and the upper portion is located above the work area; and
(f) subsequent to steps (a) through (e), securing the sidewall blank to the bottom wall by folding the upper portion of the sidewall blank over the bottom wail, such that the inside of the blank contacts the adhesive located on the bottom wall.

### Claim 2 (depends on 1)

The method of manufacturing a flexible bulk container of claim 1 wherein said method further includes:
a raised work area having a horizontal cross-sectional size and shape slightly smaller than the cross-sectional size and shape of the bottom wall.

### Claim 3 (depends on 1)

The method of manufacturing a flexible bulk container of claim 1 wherein in step (d) the adhesive is applied to the inside of the upper portion of the sidewall blank instead of the bottom wall and wherein in step (f) the adhesive located on the inside of the upper portion of the sidewall secures the sidewall blank to the bottom wall.

### Claim 4

A method of manufacturing a flexible bulk container having a sidewall and bottom wall, said method comprising the steps of:
(a) supplying a sidewall blank having a substantially hollow tubular configuration, said sidewall blank having an upper portion and a lower portion and an inside and an outside;
(b) supplying a bottom wall of circular horizontal cross-sectional shape;
(c) placing the bottom wall on a raised work area;
(d) applying adhesive to the bottom wall;
(e) positioning the sidewall blank over the raised work area and lowering the sidewall blank such that the lower portion of the sidewall blank is located below the work area and the upper portion is located above the work area;
(f) forming fins from the upper portion of the sidewall blank;
(g) securing the sidewall blank to the bottom wall by folding the upper portion of the sidewall blank over the bottom wall, such that the inside of the blank contacts the adhesive located on the bottom wall; and
(h) securing the fins to the outside of the folded over lower portion of the sidewall blank.

### Claim 5 (depends on 4)

The method of manufacturing a flexible bulk container of claim 4 wherein said method further includes pre-sewing the fins prior to securing the sidewall blank to the bottom wall.

### Claim 6 (depends on 4)

The method of manufacturing a flexible bulk container of claim 4 wherein in step (d) the adhesive is applied to the inside of the upper portion of the sidewall blank instead of the bottom wall and wherein in step (g) the adhesive located on the inside of the upper portion of the sidewall secures the sidewall blank to the bottom wall.

### Claim 7

A method of manufacturing a flexible bulk container having a sidewall and bottom wall, said method comprising the steps of:
(a) supplying a sidewall blank having a substantially hollow tubular configuration, said sidewall having an upper portion and a lower portion and an inside and an outside;
(b) supplying a bottom wall of predetermined horizontal cross-sectional size and shape having an inside and an outside and an access spout located at the center point of said horizontal cross sectional shape;
(c) placing the bottom wall on a raised work area having a central opening for accommodating said discharge spout;
(d) applying a first component of an adhesive to the outside of the bottom wall and applying a second component of an adhesive to the inside of the upper portion of the sidewall blank;
(e) positioning the sidewall blank over a raised work area such that the lower portion of the sidewall is located below the work area and the upper portion is located above the work area; and
(f) subsequent to steps (a) through (e), securing the sidewall blank to the bottom wall by folding the upper portion of the sidewall blank over the bottom wall, such that said second component of adhesive on the inside of the sidewall blank contacts said first component of adhesive on the outside of the bottom wall.

### Claim 8

A method of manufacturing a flexible bulk container having a sidewall and bottom wall, said method comprising the steps of:
(a) supplying a sidewall blank having a substantially hollow tubular configuration, said sidewall blank having an upper portion and a lower portion and an inside and an outside;
(b) supplying a bottom wall of predetermined horizontal cross-sectional size and shape;
(c) placing the bottom wall on a raised work area;
(d) applying adhesive to the bottom wall;
(e) suspending the sidewall blank over the raised work area using a movable carriage;
(f) positioning the suspended sidewall blank over a raised work area and lowering the sidewall blank such that the lower portion of the sidewall blank is located below the work area and the upper portion is located above the work area; and
(g) subsequent to steps (a) through (f) securing the sidewall blank to the bottom wall by folding the upper portion of the sidewall blank over the bottom wall, such that the inside of the blank contacts the adhesive located on the bottom wall.

### Claim 9 (depends on 8)

The method of manufacturing a flexible bulk container of claim 8 wherein in step (d) the adhesive is applied to the inside of the upper portion of the sidewall blank instead of the bottom wall and wherein in step (g) the adhesive located on the inside of the upper portion of the sidewall secures the sidewall blank to the bottom wall.