Oral pouch packaging material, oral pouch manufactured using the same, and method of preparing oral pouch packaging material

Patent metadata

Field	Value
Publication number	US-2025072487-A1
Application number	US-202418816193-A
Country	US
Kind code	A1
Filing date	Aug 27, 2024
Priority date	Aug 31, 2023
Publication date	Mar 6, 2025
Grant date	—

Abstract

An oral pouch packaging material, an oral pouch manufactured using the oral pouch packaging material, and a method of preparing an oral pouch packaging material are provided. The oral pouch packaging material includes 0% by weight (wt %) to 40 wt % of a cellulose-based staple fiber, 20 wt % to 80 wt % of a pulp fiber, 20 wt % to 60 wt % of a thermoplastic resin fiber, and 0 wt % to 5 wt % of a binder, and is prepared by a wet method.

First claim

What is claimed is:

1 . An oral pouch packaging material comprising:
0% by weight (wt %) to 40 wt % of a cellulose-based staple fiber; 20 wt % to 80 wt % of a pulp fiber; 20 wt % to 60 wt % of a thermoplastic resin fiber; and 0 wt % to 5 wt % of a binder, wherein the oral pouch packaging material is prepared by a wet method.

2 . The oral pouch packaging material of claim 1 , wherein the cellulose-based staple fiber comprises at least one selected from a group consisting of viscose and lyocell.

3 . The oral pouch packaging material of claim 1 , wherein the pulp fiber comprises at least one of a soft pulp or a hard pulp.

4 . The oral pouch packaging material of claim 1 , wherein the thermoplastic resin fiber comprises at least one selected from a group consisting of polypropylene (PP), polyethylene (PE), PE/PP, polyethylene terephthalate (PET), low-melting point polyethylene terephthalate (LMPET), and polylactic acid (PLA).

5 . The oral pouch packaging material of claim 1 , wherein
the thermoplastic resin fiber comprises a dual component fiber comprising two selected from a group consisting of PP, PE, PET, and PLA, and the thermoplastic resin fiber forms a core-shell structure.

6 . The oral pouch packaging material of claim 1 , wherein the binder comprises at least one selected from a group consisting of an acrylic binder, PLA, polybutylene succinate (PBS), polyhydroxyalkanoates (PHA), a vinyl acetate copolymer, a vinyl acrylic copolymer, a styrene-butadiene copolymer, and a natural material derived from plants.

7 . The oral pouch packaging material of claim 1 , wherein the oral pouch packaging material has a tensile strength of 0.4 newtons per millimeter (N/mm) to 2 N/mm, an elongation of 1% to 10%, a porosity of 10,000 Cooperation Center for Scientific Research Relative to Tobacco (CORESTA) unit (CU) to 70,000 CU, and an airtightness of 0 milligrams (mg) to 60 mg.

8 . The oral pouch packaging material of claim 1 , wherein the oral pouch packaging material has a basis weight of 10 to 50 grams per square meter (g/m 2 ) and a thickness of 50 micrometers (μm) to 300 μm.

9 . The oral pouch packaging material of claim 1 , wherein
the cellulose-based staple fiber is rayon and in an amount of 15 to 25 wt %, the pulp fiber is soft pulp and in an amount of 35 to 45 wt %, and the thermoplastic resin fiber is LMPET or PE/PP and in an amount of 35 to 45 wt %.

10 . An oral pouch comprising the oral pouch packaging material of claim 1 .

11 . A method of preparing the oral pouch packaging material of claim 1 , the method comprising:
step S1 of beating a pulp fiber; step S2 of forming a web by mixing the beaten pulp fiber, a cellulose fiber, thermoplastic resin fiber; and step S3 of performing dehydration and drying.

12 . The method of claim 11 , further comprising:
adding a binder.

13 . The method of claim 12 , wherein the adding of the binder is applied by size pressing during step S3, or applied by a coating method after step S3.

Assignees

• Kt & G Corp

Inventors

• Cha Sung Je
• Ki Sung Jong
• Jeoung Eun Mi
• Shin Jun Won

Classifications

• Y02W90/10

  Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics · CPC title

• D21H19/20

  comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• D21H23/24

  during paper manufacture · CPC title

• D21H13/24

  Polyesters · CPC title

• D21H13/12

  from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title