Flexible container with extendable spout

Patent metadata

Field	Value
Publication number	US-9701456-B2
Application number	US-201514871608-A
Country	US
Kind code	B2
Filing date	Sep 30, 2015
Priority date	Sep 30, 2015
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

The present disclosure provides a flexible container. In an embodiment, a flexible container is provided and includes a first multilayer film and a second multilayer film. Each multilayer film has an inner seal layer. The multilayer films are arranged such that the seal layers oppose each other and the second multilayer film is superimposed on the first multilayer film. The multilayer films are sealed along a common peripheral edge. An orifice is present in one of the multilayer films. The flexible container includes an extendable spout extending through the orifice. The extendable spout has a flange sealed to the inner seal layer of the multilayer film at the orifice. The extendable spout is composed of, or is otherwise formed from, an ethylene/α-olefin multi-block copolymer.

First claim

The invention claimed is:

1. A flexible container comprising:
a first multilayer film and a second multilayer film, each multilayer film comprising an inner seal layer, the multilayer films arranged such that the seal layers oppose each other and the second multilayer film is superimposed on the first multilayer film, the multilayer films sealed along a common peripheral edge;
an orifice in one of the multilayer films;
an extendable spout extending through the orifice and having a flange sealed to the inner seal layer of the multilayer film at the orifice, the extendable spout comprising an ethylene/ α-olefin multi-block copolymer having a melt temperature, Tm1, from 115° C. to 125° C.,
wherein each seal layer comprises an olefin-based polymer having melt temperature, Tm2, and Tm2 is from 10° C. to 40° C. less than Tm1.

2. The flexible container of claim 1 wherein the extendable spout comprises
an outlet; and
a plurality of foldable panels integrally connecting the flange to the outlet.

3. The flexible container of claim 2 wherein the extendable spout has a compressed configuration wherein each foldable panel is folded; and
a seal film is adhesively attached over the flexible spout in the compressed configuration.

4. The flexible container of claim 2 wherein the extendible spout has an extended configuration wherein each panel is unfolded.

5. The flexible container of claim 2 comprising a closure for mated engagement with the outlet.

6. The flexible container of claim 1 wherein the extendable spout defines a channel, and the extendable spout comprises
a flexible valve extending across the channel and having a slit which opens to permit flow therethrough, the flexible valve comprising the ethylene/α-olefin multi-block copolymer.

7. The flexible container of claim 6 wherein the flexible valve is located in the outlet.

8. The flexible container of claim 6 wherein the flexible valve is integral to the extendable spout.

9. The flexible container of claim 1 wherein the extendable spout is an injection molded spout.

10. A flexible container comprising:
a front panel and a rear panel, the front panel superimposed on the rear panel;
a first gusset panel and a second gusset panel located between the front panel and the rear panel, each panel composed of a multilayer film and each multilayer film comprising an inner seal layer, the panels heat sealed along a common peripheral edge;
an orifice in one of panels;
an extendable spout extending through the orifice and having a flange sealed to the inner seal layer of the panel at the orifice, the extendable spout comprising an ethylene/α-olefin multi-block copolymer having a melt temperature, Tm1, from 115° C. to 125° C.,
wherein each seal layer comprises an olefin-based polymer having melt temperature, Tm2, and Tm2 is from 10° C. to 40° C. less than Tm1.

11. The flexible container of claim 10 wherein the extendable spout is located in the front panel.

12. The flexible container of claim 10 wherein the extendable spout is located in a top segment of the flexible container.

13. The flexible container of claim 10 comprising an upper handle.

14. The flexible container of claim 10 comprising a lower handle.

Assignees

• Dow Global Technologies Llc

Inventors

• Franca Marcos
• Pereira Bruno Rufato
• Ma Liangkai
• Crabtree Sam L

Classifications

• B65D31/147

  the filling port being provided in a side wall · CPC title

• B65D31/10

  with gusseted sides · CPC title

• B65D75/5877 Primary

  connected to a planar surface of the package wall · CPC title

• B65D31/04

  with multiple walls (B65D81/3881 takes precedence; for shock absorbing purposes B65D81/03) · CPC title

• B65D47/063

  with flexible parts · CPC title