Recyclable blanks and containers made therefrom having controlled fluid permeability

Patent metadata

Field	Value
Publication number	US-12589929-B2
Application number	US-202217878195-A
Country	US
Kind code	B2
Filing date	Aug 1, 2022
Priority date	Aug 2, 2021
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

A blank for a package can include a substrate comprising a recyclable paper, the substrate having a first side and a second side opposite the first side. The blank can include one or more recyclable fluid resistant layers on the first side of the substrate configured to prevent water and/or oxygen from passing through to the substrate. The one or more recyclable fluid resistant layers can be configured to be an outside of the package. The blank can include a recyclable fluid permeable layer disposed on the second side and configured to allow a controlled amount of a fluid transmissibility and/or absorption by or through the fluid permeable layer.

First claim

What is claimed is:

1 . A blank for a package comprising:
a substrate comprising a recyclable paper, the substrate having a first side and a second side opposite the first side; one or more recyclable fluid resistant layers on the first side of the substrate configured to prevent water and/or oxygen from passing through to the substrate, the one or more recyclable fluid resistant layers configured to be an outside of the package, wherein the one or more recyclable fluid resistant layers include at least two layers comprising a first layer and a second layer, wherein the first layer includes adhesive and is bonded to the substrate with the adhesive; and a recyclable fluid permeable layer comprising coating directly disposed on the second side and configured to allow a controlled amount of a fluid transmissibility and/or absorption by or through the fluid permeable layer.

2 . The blank of claim 1 , wherein the recyclable fluid permeable layer has or provides a 30-minute Cobb of about 10 g/m 2 to 15 g/m 2 .

3 . The blank of claim 1 , wherein the recyclable fluid permeable layer is made of acrylic.

4 . The blank of claim 3 , wherein the recyclable fluid permeable layer has a coat weight of about 1.5 lbs/MSF to about 2.5 lbs/MSF.

5 . The blank of claim 4 , wherein the recyclable fluid permeable layer has a coat weight of about 2 lbs/MSF.

6 . The blank of claim 3 , wherein the recyclable fluid permeable layer is the only layer on the second side of the substrate.

7 . The blank of claim 6 , wherein the one or more recyclable fluid resistant layers have or provides a 30-minute Cobb of less than about 2 g/m 2 .

8 . The blank of claim 7 , wherein the one or more recyclable fluid resistant layers have or provides a 30-minute Cobb of about 0 g/m 2 such that the one or more recyclable fluid resistant layers are substantially water impermeable.

9 . The blank of claim 1 , wherein the
the first layer is disposed on the substrate; and the second layer is disposed on the first layer.

10 . The blank of claim 9 , wherein the at least two layers are polymeric layers.

11 . The blank of claim 10 , wherein the first layer includes pigment.

12 . The blank of claim 9 , wherein the first layer is an adhesive backed double reflective air and vapor control layer (AVCL).

13 . The blank of claim 1 , wherein the substrate is paperboard.

14 . The container of claim 13 , wherein the recyclable fluid permeable layer is an inside surface of container, wherein the coated paperboard that contacts a food product allows for ease of release.

15 . The blank of claim 13 , wherein the paperboard is 100% virgin paperboard.

16 . The blank of claim 1 , wherein one or more recyclable fluid resistant layers on the first side of the substrate comprising a coating.

17 . The blank of claim 1 , wherein the fluid permeable layer is a continuous layer.

18 . A container for holding a frozen item, comprising:
a substrate comprising a recyclable paper, the substrate having a first side and a second side opposite the first side; one or more recyclable fluid resistant layers on the first side of the substrate configured to prevent water and/or oxygen from passing through to the substrate, the one or more recyclable fluid resistant layers configured to be an outside of the package, wherein the one or more recyclable fluid resistant layers include at least two layers comprising a first layer and a second layer, wherein the first layer includes adhesive and is bonded to the substrate with the adhesive; and a recyclable fluid permeable layer comprising coating directly disposed on the second side and configured to allow a controlled amount of a fluid transmissibility and/or absorption by or through the fluid permeable layer, wherein the container is configured such that the recyclable fluid permeable layer is an inside surface on which the frozen item sits.

19 . The container of claim 18 , wherein one or more recyclable fluid resistant layers on the first side of the substrate is configured to prevent water and/or oxygen from passing through to the substrate, wherein the one or more recyclable fluid resistant layers on the first side of the substrate comprising a coating.

20 . A method for forming a blank, comprising:
coating a first side of a water absorptive substrate with one or more recyclable water resistant or recyclable water impermeable layers; and coating a second side of the substrate with one or more recyclable fluid permeable layer having a controlled amount of fluid permeability configured to allow a controlled amount of a fluid transmissibility and/or absorption by or through the fluid permeable layer, wherein the one or more recyclable fluid resistant layers include at least two layers comprising a first layer and a second layer, wherein the first layer includes adhesive and is bonded to the substrate with the adhesive.

Assignees

• Westrock Mwv Llc

Inventors

• Benson John D
• Mcdonnell William T

Classifications

• B32B29/00

  Layered products comprising {a layer of} paper or cardboard · CPC title

• B65D81/264

  for absorbing liquids · CPC title

• B65D65/42 Primary

  Applications of coated or impregnated materials · CPC title

• D21H11/14

  Secondary fibres (working-up waste paper D21C5/02) · CPC title

• D21H27/10 Primary

  Packing paper (packaging materials of special type or form B65D65/38) · CPC title