Method and system for forming a packaging material

Patent metadata

Field	Value
Publication number	US-12358017-B2
Application number	US-202217825069-A
Country	US
Kind code	B2
Filing date	May 26, 2022
Priority date	May 28, 2021
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

A method for forming a resultant material. The method can include obtaining a base material including a fibrous material with a plurality of fiber portions extending from a face of the base material. The method further can include treating at least the face of the base material, the treating at least the face including applying heat along at least a portion of the face with a treatment unit to at least partially remove the plurality of fiber portions extending from the face.

First claim

What is claimed is:

1. A method for forming a resultant material, the method comprising:
obtaining a base material comprising a fibrous material with a plurality of fiber portions extending from a face of the base material;
treating the face of the base material using a first treatment comprising applying heat along at least a portion of the face to at least partially remove the plurality of fiber portions extending from the face;
applying a first polymer layer to the face of the base material;
treating the first polymer layer using a second treatment comprising applying heat along at least a portion of the first polymer layer; and
applying a second polymer layer to the first polymer layer.

2. The method of claim 1 , further comprising moving at least one of the base material and the treatment unit relative to the other during the treating at least the face of the base material.

3. The method of claim 1 , further comprising moving the base material in a machine direction through a treatment station comprising a treatment unit that at least partially removes the plurality of fiber portions extending from the face.

4. The method of claim 3 , further comprising moving the base material through a coating apparatus downstream from the treatment unit, and applying the first polymer layer to the face of the base material with the coating apparatus.

5. The method of claim 1 , further comprising moving the base material in a machine direction through a coating apparatus, applying the first polymer layer to the face of the base material with the coating apparatus to form an initial coated material, and moving the initial coated material past a treatment unit that applies the heat along the at least the portion of the first polymer layer.

6. The method of claim 5 , wherein at least some of the plurality of fiber portions extends at least partially through the first polymer layer after the applying the first polymer layer and wherein the applying heat along the at least the portion of the first polymer layer removes the at least some of the plurality of fiber portions and wherein the applying heat along the at least the portion of the first polymer layer causes at least a portion of the first polymer layer to at least partially move into spaces formed in the first polymer layer by the removing the at least some of the plurality of fiber portions.

7. The method of claim 5 , wherein the applying heat along the at least the portion of the first polymer layer comprises applying a flame from the treatment unit to a surface of the first polymer layer.

8. The method of claim 1 , wherein the first polymer comprises at least one of a renewable material, a compostable material, or a bio-derived material.

9. The method of claim 1 , wherein the first polymer layer is applied via a water-based emulsion disposed on the face of the base material, wherein the water-based emulsion comprises a polymer, and wherein the water-based emulsion is at least partially dried to form the first polymer layer on the face of the base material.

10. The method of claim 1 wherein the first polymer layer comprises at least one of polylactic acid (PLA), polyhydroxyalkanoate (PHA), or polybutylene succinate (PBS).

11. The method of claim 1 , wherein the first treatment is performed with a flame treatment unit, and the applying heat along at least a portion of the face of the base material comprises applying a flame from the flame treatment unit along at least a portion of the face of the base material.

12. A method for forming a resultant
material, the method comprising:
obtaining a base material comprising a fibrous material;
applying a first polymer layer to a face of the base material to form an initial coated material; and
treating the initial coated material by applying localized heat to the first polymer layer, and
applying a second polymer layer on the first polymer layer.

13. The method of claim 12 , wherein the applying localized heat to the first polymer layer causes the first polymer layer to at least partially coalesce.

14. The method of claim 12 , wherein the applying the first polymer layer to the face of the base material comprises applying a water-based emulsion to the base material, the water-based emulsion comprising a polymer, and wherein the applying the localized heat to the first polymer layer at least partially dries the water-based emulsion and at least partially causes the polymer to coalesce.

15. The method of claim 14 , wherein the first polymer layer comprises polyhydroxyalkanoate (PHA).

16. The method of claim 12 , wherein fiber portions at least partially extend from the face of the base material, the fiber portions extending at least partially through the first polymer layer prior to the treating, and wherein the applying localized heat to the first polymer layer at least partially removes the fiber portions causing voids to form in the first polymer layer, wherein the applying localized heat causes at least a portion of the first polymer layer to at least partially fill the voids.

17. The method of claim 12 , wherein the first polymer layer comprises at least one of a renewable material, a compostable material, or a bio-derived material.

18. The method of claim 12 , wherein the applying the first polymer layer comprises moving the base material through a coating apparatus, and wherein the treating the initial coated material comprises moving the initial coated material in relation to a treatment unit.

Assignees

• Graphic Packaging Int Llc

Inventors

• Sloat Jeffrey T
• Crooks Corey Desmond

Classifications

• B05D3/0254

  After-treatment · CPC title

• B05D2252/02

  of indefinite length · CPC title

• B05D2201/04

  Laminate · CPC title

• B05D2350/30

  Change of the surface · CPC title

• B05D3/007

  After-treatment · CPC title