Continuous fanfolded joined corrugated

Patent metadata

Field	Value
Publication number	US-11897223-B2
Application number	US-202217703769-A
Country	US
Kind code	B2
Filing date	Mar 24, 2022
Priority date	Apr 3, 2019
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

A bale of stock packaging material includes a continuous tube of paperboard material, the continuous tube of paperboard material being flattened and folded back and forth on itself into a fan-folded bale. The continuous tube of paperboard can be a single piece of paperboard with two opposed edges that are folded to overlap with each other. The paperboard material can include a corrugated layer. The opposed edges can be adhered together to form a single seam that runs lengthwise along the continuous tube of paperboard. The adhesive can be applied between the two edges which can join to form the single seam.

First claim

What is claimed is:

1. A system comprising:
a ramp;

two or more rails operatively connected to the ramp, to guide a pair of opposed edges of a web to fold in towards each other and overlap, with a first edge being underneath the opposite second edge; and
an adhesive applicator operatively connected to the rails to receive a folded over continuous web.

2. The system as recited in claim 1 , further comprising a conveyor operatively connected to the adhesive applicator to receive the continuous tube of web.

3. The system as recited in claim 1 further comprising a folder operatively connected to the adhesive applicator to receive a continuous flattened tube of paperboard.

4. The system as recited in claim 1 , further comprising one or more skis and a pair of anvils which are operatively connected between the ramp and the rails, wherein the skis create a pair of fold lines running the length of the continuous paperboard.

5. The system as recited in claim 1 , further comprising a scoring unit operatively connected between the ramp and the rails, wherein the scoring unit creates a set of scores running down the length of the continuous paperboard.

6. The system as recited in claim 2 , wherein the conveyor is configured to drive a stock of continuous paperboard including corrugated paperboard.

7. The system as recited in claim 5 , wherein the scoring unit includes a set of rotary slitter scorers.

8. The system as recited in claim 1 , further comprising a flattener operatively connected to the two or more rails to apply pressure to one or more of the first edge and the opposite second edge.

9. The system of claim 8 wherein the flattener is configured to flatten, smooth, and position the folded continuous web prior to receipt by the adhesive applicator.

10. The system of claim 1 wherein the adhesive applicator is configured to apply a layer of adhesive to the first edge and applies a downward force onto the opposite second edge to bond the pair of opposed second edges together along a seam to create the continuous web.

Assignees

• Westrock Shared Services Llc

Inventors

• Magnell Greg P

Classifications

• B31B50/26 Primary

  Folding sheets, blanks or webs · CPC title

• B31D5/04

  including folding or pleating, e.g. Chinese lanterns · CPC title

• B31F7/004

  Making tubes · CPC title

• B32B1/08

  Tubular products · CPC title

• B65D65/403

  with at least one corrugated layer · CPC title