Bulk flux bag hybrid liner bag

Patent metadata

Field	Value
Publication number	US-11767158-B2
Application number	US-202016909108-A
Country	US
Kind code	B2
Filing date	Jun 23, 2020
Priority date	Aug 16, 2019
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

A liner bag for, for example, a flexible intermediate bulk container (FIBC) includes a body portion formed by at least two sheets. The body portion has a first end and a second end defining a cavity therebetween. The first end has an opening for receiving a product. The liner bag also includes at least one seal (e.g., a vertical seal) joining the two sheets. The liner bag further includes at least one polymer flange secured to the two sheets and extending outward from the vertical seal to provide at least one fastening location to secure the liner bag to the container.

First claim

What is claimed is:

1. A liner bag for a container, comprising:
a body portion formed by at least two sheets, the body portion having a first end and a second end defining a cavity therebetween, the first end having an opening for receiving a product;
at least one vertical seal joining the at least two sheets; and
at least one polymer flange secured to the at least two sheets and extending outward from the at least one vertical seal to provide at least one fastening location to secure the liner bag to the container, wherein the at least one polymer flange is integral to at least one sheet of the at least two sheets,
wherein each of the at least two sheets is a foil laminate sheet which includes a foil element and a polymer element, and
wherein a portion of the polymer element extends beyond an edge of the foil element to create a polymer flange of the at least one polymer flange.

2. The liner bag of claim 1 , wherein the at least one polymer flange is secured between the at least two sheets.

3. The liner bag of claim 1 , wherein the at least one polymer flange is secured on top of or below the at least two sheets.

4. The liner bag of claim 1 , wherein the at least one vertical seal extends from the first end to the second end to join the at least two sheets.

5. The liner bag of claim 1 , wherein the second end is closed.

6. The liner bag of claim 1 , including a closed second end, wherein at least the closed second end of the liner bag is rectangular in shape.

7. The liner bag of claim 1 , wherein the liner bag is configured to fit into an interior of the container to line the container.

8. The liner bag of claim 1 , including a closed second end, wherein at least the closed second end of the liner bag is circular in shape.

9. The liner bag of claim 1 , including a closed second end, wherein at least the closed second end of the liner bag is polygonal in shape.

10. The liner bag of claim 1 , wherein the at least one polymer flange is made of polyethylene or polypropylene material configured to resist tearing when secured to the container.

11. The liner bag of claim 1 , wherein the at least two sheets include four sheets, and wherein two sheets of the four sheets are each configured to be folded along a centerline and secured to other two sheets of the four sheets to create a collapsible liner bag.

12. The liner bag of claim 1 , wherein the at least two sheets and the at least one polymer flange are configured to be joined via at least one of an adhesive or heat sealing.

13. The liner bag of claim 1 , wherein the polymer element includes a coating on the foil element.

14. A method for creating and securing a liner bag to a container, comprising:
joining at least two sheets of foil laminate to form a liner bag for a container, wherein each of the at least two sheets of foil laminate are comprised of a foil element and a polymer element, the at least two sheets of foil laminate having at least one polymer flange extending outward from the at least two sheets of foil laminate, wherein the at least one polymer flange is integral to at least one sheet of the at least two sheets;
forming the at least one polymer flange by extending a portion of the polymer element beyond an edge of the foil element; and
sewing the liner bag to the container through the at least one polymer flange.

15. The method of claim 14 , further comprising coating the polymer element onto the foil element.

16. The method of claim 14 , further comprising joining the at least one polymer flange to the at least two sheets of foil laminate via at least one of heat sealing or applying an adhesive.

Assignees

• Lincoln Global Inc

Inventors

• Weissbrod Paul A

Classifications

• B65D88/1618 Primary

  double-walled or with linings · CPC title

• B65D65/42 Primary

  Applications of coated or impregnated materials · CPC title

• B65D31/02 Primary

  with laminated walls · CPC title

• B65D88/1631 Primary

  with shape keeping flexible elements · CPC title

• B65D31/06

  with rigid end walls · CPC title