Method and system for forming packages

• US 10,640,271 B2
• Filed: 04/29/2016
• Issued: 05/05/2020
• Est. Priority Date: 04/29/2015
• Status: Active Grant

• Current Assignee: Graphic Packaging International Incorporated
• Original Assignee: Graphic Packaging International Incorporated
• Inventors: Walsh, Joseph C.
• Primary Examiner(s): Chukwurah, Nathaniel C
• Assistant Examiner(s): Palmer, Lucas E. A.
• Application Number:
  US15/142,435
• Publication Number:
  US 20160318275A1
• Time in Patent Office: 1,467 Days
• CPC Class Codes: A47G 21/00 Table-ware crumb trays A47L13/52; table knives B26B
• CPC Class Codes: A47G 21/001 Holders or wrappers as eating aids for fast food, e.g. hamburgers
• CPC Class Codes: B31B 2155/0014 having their openings facing transversally to the direction of movement
• CPC Class Codes: B31B 70/008 Stiffening or reinforcing B31B70/876 takes precedence
• CPC Class Codes: B31B 70/262 involving longitudinally folding, i.e. along a line parallel to the direction of movement
• CPC Class Codes: B31B 70/8131 Making bags having interengaging closure elements
• CPC Class Codes: B65D 65/14 with areas coated with adhesive
• CPC Class Codes: B65D 65/22 Details
• CPC Class Codes: B65D 75/525 External rigid or semi-rigid supports

Abstract

A system and method for forming reinforced packages. The method can comprise forming an attached web by adhering a construct to a web of material, and moving the attached web in a downstream direction through at least a web edge forming assembly. The moving the attached web can comprise moving the construct with the web of material. The method further can include at least partially forming a folded web by folding at least a portion of the web of material as the attached web moves through the web folding assembly and forming a reinforced package comprising a liner and the construct by separating the liner from a remainder of the folded web. The construct is adhered to the liner.

Claims

1. A method of forming reinforced packages, the method comprising:

forming an attached web by adhering a construct to a web of material, wherein the construct comprises a paperboard blank and the web of material comprises a flexible sheet of material;

moving the attached web in a downstream direction through at least a portion of a web edge forming assembly prior to a construct forming assembly, the moving the attached web comprising moving the construct with the web of material;

at least partially forming a folded web by folding at least a portion of the web of material as the attached web moves through the web edge forming assembly;

forming a folded construct after the at least partially forming the folded web, the forming the folded construct comprising folding at least a portion of the construct to extend at least partially over the folded web as the attached web moves through the construct forming assembly; and

forming a reinforced package comprising a liner and the construct by separating the liner from a remainder of the folded web, the construct being adhered to the liner.

2. The method of claim 1, wherein the at least partially forming the folded web comprises forming a pouch, and the method further comprises at least partially forming at least one sealed area adjacent the pouch.

3. The method of claim 2, comprising forming the at least one sealed area in the folded web of material before the separating the liner from the remainder of the folded web.

4. The method of claim 3, wherein the forming the at least one sealed area comprises moving at least a portion of the attached web between a heat seal roller and a heat seal arm.

5. The method of claim 4, wherein the heat seal roller is generally cylindrical, the heat seal arm comprises a curved surface disposed proximate the heat seal roller, the forming the at least one sealed area in the folded web comprises rotating the heat seal roller relative to the heat seal arm with the attached web engaging an outer surface of the heat seal roller, pressing at least a portion of the curved surface of the heat seal arm against at least a portion of the outer surface of the heat seal roller with at least a portion of the folded web disposed between the outer surface of the heat seal roller and the curved surface of the heat seal arm as the heat seal roller rotates, and applying heat to the folded web by heating at least one of the heat seal arm and the heat seal roller.

6. The method of claim 5, further comprising applying a heat-actuated adhesive to at least a portion of the web of material before the at least partially forming the folded web, wherein the applying heat to the folded web at least partially activates the heat-actuated adhesive to form the at least one sealed area.

7. The method of claim 1, further comprising depositing the construct onto a conveyor before the forming the attached web, the conveyor comprising a plurality of lugs, at least one lug engaging the construct after the depositing the construct on the conveyor, the at least one lug moving the construct in the downstream direction.

8. The method of claim 7, wherein the conveyor comprises two spaced apart lug belts, each comprising lugs of the plurality of lugs.

9. The method of claim 7, wherein the adhering the construct to the web of material comprises moving the construct on the conveyor to an adhesive applicator, applying adhesive to at least a portion of the construct by operating the adhesive applicator, and moving the construct on the conveyor to an attachment assembly.

10. The method of claim 9, wherein the adhering the construct to the web of material further comprises bringing the web of material into contact with the construct so that the adhesive applied to the construct secures the construct to the web of material to form the attached web.

11. The method of claim 10, further comprising moving the attached web away from the conveyor over at least one roller to the web edge forming assembly.

12. The method of claim 1, wherein the at least partially forming the folded web comprises folding at least a marginal portion of the web of material to extend at least partially over a central portion of the web of material.

13. The method of claim 12, wherein the web edge forming assembly comprises at least one guide roller and an inner forming plate at least partially extending over the central portion of the web of material, and the folding at least the marginal portion of the web of material comprises engaging the marginal portion between the inner forming plate and the at least one guide roller so that the marginal portion is moved from being generally planar with the central portion upstream from the at least one guide roller to extending over the central portion downstream from the at least one guide roller.

14. The method of claim 13, wherein the inner forming plate is spaced apart from the central portion of the web of material at an upstream end of the web edge forming assembly so that the folded web comprises a gusset portion extending upwardly from the central portion to the marginal portion, the inner forming plate is positioned at an angle with respect to the central portion of the web of material so that the inner forming plate is closer to the central portion proximate a downstream end of the web edge forming assembly than at the upstream end of the web edge forming assembly, and the at least partially forming the folded web comprises moving the marginal portion downwardly toward the central portion on the inner forming plate as the folded web is moved in the downstream direction while pushing at least a portion of the gusset portion inwardly with an outer guide plate to form a gusset between the marginal portion and the central portion of the folded web, the gusset overlapping the central portion and the marginal portion overlapping the gusset.

15. The method of claim 13, wherein the web edge forming assembly further comprises a forming wheel disposed upstream from the at least one guide roller and the inner forming plate, the forming wheel at least partially engaging the central portion of the web of material during at least a portion of the folding at least the marginal portion of the web of material.

16. The method of claim 1, wherein the construct comprises at least an end panel foldably connected to a remainder of the construct, and the forming the folded construct comprises folding at least the end panel relative to the remainder of the construct so that the end panel at least partially overlaps the folded web.

17. The method of claim 16, wherein the forming the folded construct further comprises applying an adhesive to at least the end panel by operating an adhesive applicator prior to the folding at least the end panel so that the end panel is at least partially adhered to the folded web after the folding at least the end panel.

18. The method of claim 16, wherein the at least partially forming the folded web comprises at least partially forming a pouch as the attached web moves through the web edge forming assembly by folding at least a marginal portion of the web of material to at least partially overlap a central portion of the web of material, and the folding at least the end panel comprises positioning at least the end panel to at least partially overlap the pouch of the folded web as the attached web moves through the construct forming assembly.

19. The method of claim 1, wherein the construct and the web of material comprise different materials.

20. A method of forming reinforced packages, the method comprising:

forming an attached web by adhering a construct to a web of material;

moving the attached web in a downstream direction through at least a web edge forming assembly and then a construct forming assembly, the moving the attached web comprising moving the construct with the web of material, wherein the web edge forming assembly comprises an inner forming plate at least partially extending over a central portion of the web of material, the inner forming plate being spaced apart from the central portion of the web of material at an upstream end of the web edge forming assembly and being positioned at an angle with respect to the central portion of the web of material so that the inner forming plate is closer to the central portion proximate a downstream end of the web edge forming assembly than at the upstream end of the web edge forming assembly;

at least partially forming a folded web by folding at least a portion of the web of material as the attached web moves through the web edge forming assembly, wherein the at least partially forming the folded web comprises folding at least a marginal portion of the web of material to engage the inner forming plate at least partially over a central portion of the web of material, a gusset portion of the folded web extending upwardly from the central portion to the marginal portion, and moving the marginal portion downwardly toward the central portion on the inner forming plate as the folded web is moved in the downstream direction while pushing at least a portion of the gusset portion inwardly with an outer guide plate to form a gusset between the marginal portion and the central portion of the folded web, the gusset overlapping the central portion and the marginal portion overlapping the gusset;

forming a folded construct after the at least partially forming the folded web, the forming the folded construct comprising folding at least a portion of the construct to extend at least partially over the folded web as the attached web moves through the construct forming assembly; and

forming a reinforced package comprising a liner and the construct by separating the liner from a remainder of the folded web, the construct being adhered to the liner.