# US 12,006,636 B2 · Moisture barrier coated tobacco product packaging

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- Number: US 12,006,636 B2
- Document ID: US12006636B2
- Status: Granted
- Kind: B2
- Application number: 17/671,414
- Filed: 2022-02-14
- Published: 2022-06-02
- Granted: 2024-06-11
- Earliest claimed: 2015-07-24
- Assignees: R. J. Reynolds Tobacco Company
- Applicants: R.J. Reynolds Tobacco Company
- Inventors: Andries D. Sebastian; Craig T. Demarest; Percy D. Phillips; Michael F. Davis; Pankaj C. Patel
- Web page: https://patentgrep.com/patent/US12006636B2

## CPC

- D21H 27/10: Packing paper (packaging materials of special type or form B65D65/38)
- B65D 5/62: External coverings or coatings {(B65D5/4245, B65D5/4262 take precedence)}
- B65D 85/1036: {Containers formed by erecting a rigid or semi-rigid blank}
- B65D 85/1045: {having a cap-like lid hinged to an edge}
- C09D 103/02: Starch; Degradation products thereof, e.g. dextrin
- C09D 167/04: Polyesters derived from hydroxycarboxylic acids, e.g. lactones (C09D167/06 takes precedence)
- D21H 19/82: superposed {(D21H19/84 takes precedence)}
- D21H 19/822: {two superposed coatings, both being pigmented}
- D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

A method of making a package including forming a moisture barrier coated paper material that includes a moisture barrier coated paper material including a base substrate, a first polymer coating, a second polymer coating, and a third polymer coating, the first polymer coating, the second polymer coating, and the third polymer coating applied over a first side of the base substrate, the first polymer coating, the second polymer coating, and the third polymer coating providing a barrier for moisture and air exchange through the paper material, the first polymer coating, the second polymer coating, and the third polymer coating providing heat and pressure sealability capabilities to the paper material, cutting a packaging blank from the paper material; folding the packaging blank into the package, and sealing the package by providing heat and pressure to overlapped portions of the paper material.

## Claims

### Claim 1

A method of making a package comprising:
forming a moisture barrier coated paper material, wherein the moisture barrier coated paper material comprises: a paper-based substrate, a first polymer coating, a second polymer coating, a third polymer coating, and a hydraulic encapsulation layer of microencapsulated humectants or a microencapsulated aqueous-based solution disposed at, at least one of between the first polymer coating and the second polymer coating or between the second polymer coating and the third polymer coating the first polymer coating, the second polymer coating, and the third polymer coating applied over a first side of the paper-based substrate, the first polymer coating, the second polymer coating, and the third polymer coating providing a barrier for moisture and air exchange through the moisture barrier coated paper material, the first polymer coating, the second polymer coating, and the third polymer coating providing heat and pressure sealability capabilities to the moisture barrier coated paper material;
cutting a packaging blank from the moisture barrier coated paper material;
folding the packaging blank into the package; and
sealing the package by providing heat and pressure to overlapped portions of the moisture barrier coated paper material.

### Claim 2 (depends on 1)

The method of claim 1, further comprising post-treating the moisture barrier coated paper material with a corona or plasma treatment.

### Claim 3 (depends on 1)

The method of claim 1, wherein the package includes a top and a main body that form a central compartment.

### Claim 4 (depends on 3)

The method of claim 3, further comprising forming a hinge between the top and the main body out of the moisture barrier coated paper material.

### Claim 5 (depends on 3)

The method of claim 3, wherein the central compartment is further formed by the first side of the paper-based substrate.

### Claim 6 (depends on 4)

The method of claim 4, wherein the package is a cigarette pack.

### Claim 7 (depends on 1)

The method of claim 1, wherein sealing the package does not include applying adhesive.

### Claim 8 (depends on 1)

The method of claim 1, wherein the each of the first polymer coating, the second polymer coating, and the third polymer coating are mineral composite extrudates that include a polymer base with embedded minerals.

### Claim 9 (depends on 8)

The method of claim 8, wherein the polymer base is a polyolefin plastomer, a polybutylene adipate succinate polymer, a polylactic acid polymer, a polyhydroxyalkanoate polymer, or a thermoplastic starch.

### Claim 10 (depends on 8)

The method of claim 8, wherein the embedded minerals comprises one of calcium carbonate, dolomite, talc, silica, silicon, mineral fiber, or mica.

### Claim 11 (depends on 8)

The method of claim 8, wherein the paper-based substrate is reinforced with nanocellulose.

### Claim 12 (depends on 1)

The method of claim 1, wherein the paper-based substrate is paperboard.

### Claim 13 (depends on 1)

The method of claim 1, wherein forming the moisture barrier coated paper material includes applying the first polymer coating to the paper-based substrate via an extrusion coating process.