# US 5,348,525 A · Method of constructing flexible containers with tubular fitments

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- Number: US 5,348,525 A
- Document ID: US5348525A
- Status: Granted
- Kind: A
- Application number: 08/103,569
- Filed: 1993-08-09
- Granted: 1994-09-20
- Earliest claimed: 1993-08-09
- Assignees: Jebco Packaging Systems, Inc.
- Inventors: Jerry E. Buchanan
- Web page: https://patentgrep.com/patent/US5348525A

## CPC

- B29C 66/53262: {Enclosing spouts between the walls of bags, e.g. of medical bags}
- B29C 65/02: by heating, with or without pressure
- B29C 66/1122: {Single lap to lap joints, i.e. overlap joints (B29C66/45, B29C66/472, B29C66/52272 take precedence)}
- B29C 66/244: {said joint lines being non-straight, e.g. forming non-closed contours}
- B29C 66/3452: {Making complete joints by combining partial joints}
- B29C 66/4312: {for making flat seams in tubular or hollow articles, e.g. transversal seams}
- B29C 66/63: {Internally supporting the article during joining (B29C66/49 takes precedence)}
- B29C 66/61: {Joining from or joining on the inside (for making tubes by bending sheets and joining from the inside B29C53/387)}
- B29C 66/71: {characterised by the composition of the plastics material of the parts to be joined (welding bar compositions B29C65/125)}
- B31B 70/844: {Applying rigid valves, spouts, or filling tubes}
- Y10S 493/929: with valve
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- 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)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A method is disclosed for constructing a flexible container (10) with a tubular fitment (13). The method includes placing the fitment upon a mandrel (22), positioning the mandrel supported fitment between the unsealed sides (25, 26) of the container, sealing the top edge (28) of the sides about a base portion (18) of the fitment and fully withdrawing the mandrel from the fitment and from between the sides so that the side edges (29) and top edge of the sides may be sealed to form a completed container.

## Claims

### Claim 1

A method of constructing a container made from a sheet of flexible material with a fitment of the type having a relatively wide tubular base from which a relatively narrow tubular neck extends, and with the method comprising the steps of
(a) forming the sheet into a generally U-shape having a bottom from which two sides extend that have sealable side edges and a sealable top edge,
(b) placing the fitment upon a mandrel,
(c) positioning the fitment base supported on the mandrel between the top edges of the sides,
(d) sealing the top edges to the fitment base,
(e) removing the mandrel from the fitment base by moving it towards the sheet bottom and then from between the sides, and
(f) sealing the sheet along the side edges and top edges, thereby constructing the container.

### Claim 2 (depends on 1)

The method of claim 1 wherein step (d) the top edges are heat sealed to the fitment base.

### Claim 3 (depends on 1)

The method of claim 1 wherein step (b) the fitment is placed on a mandrel having a size and shape which closely conforms to the interior of the fitment.

### Claim 4

A method of constructing a container made from a sheet of flexible material with a fitment of the type having a relatively wide tubular base from which a relatively narrow tubular neck extends, and with the method comprising the steps of:
(a) forming the sheet so as to have a bottom from which two, overlaying container sides extend that have sealable side edges and a sealing top edge,
(b) placing a fitment upon a mandrel;
(c) extending one container side over the mandrel supported fitment while simultaneously extending the other container side over the opposite side of the mandrel supported fitment;
(d) sealing the top edges of the container sides about the mandrel supported fitment;
(e) removing the mandrel from the fitment base by moving it towards the bottom and from between the container sides; and
(f) sealing the side edges and top edge of the overlaying container sides to complete the construction of the container.