# US 10,865,031 B2 · Moisture control packaging materials

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- Number: US 10,865,031 B2
- Document ID: US10865031B2
- Status: Granted
- Kind: B2
- Application number: 15/761,321
- Filed: 2016-09-21
- Published: 2018-09-20
- Granted: 2020-12-15
- Earliest claimed: 2015-09-29
- Assignees: Philip Morris Products S.A.
- Applicants: Philip Morris Product S.A.
- Inventors: Timothee Cailleaux
- Web page: https://patentgrep.com/patent/US10865031B2

## CPC

- B65D 81/22: in moist conditions or immersed in liquids
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 15/08: of synthetic resin
- B32B 15/085: comprising polyolefins
- B32B 15/088: comprising polyamides
- B32B 15/09: comprising polyesters
- B32B 15/14: next to a fibrous or filamentary layer
- B32B 15/20: comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)}
- B32B 27/08: of synthetic resin
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/285: {comprising polyethers}
- B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 27/322: {comprising halogenated polyolefins, e.g. PTFE}
- B32B 27/36: comprising polyesters
- B65D 85/10568: {opening of the lid opens simultaneously an inner package within the container}
- A24F 25/00: Devices used by the smoker for controlling the moisture content of, or for scenting, cigars, cigarettes or tobacco
- B32B 2255/20: Inorganic coating
- B32B 2255/205: Metallic coating
- B32B 2260/00: Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B 2260/021: Fibrous or filamentary layer
- B32B 2260/04: Impregnation, embedding, or binder material
- B32B 2262/02: Synthetic macromolecular fibres
- B32B 2262/06: Vegetal fibres
- B32B 2262/08: Animal fibres, e.g. hair, wool, silk
- B32B 2307/724: Permeability to gases, adsorption
- B32B 2307/7246: Water vapor barrier
- B32B 2307/726: Permeability to liquids, absorption
- B32B 2307/7265: Non-permeable
- B32B 2439/40: Closed containers
- B32B 2439/62: Boxes, cartons, cases
- B32B 2439/70: Food packaging
- B32B 2553/00: Packaging equipment or accessories 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
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06)

## Abstract

Packaging materials are configured such that when sealed to define an interior volume of a package the packaging material has an inner surface facing the interior volume and an outer surface facing away from the interior volume. Between the inner surface and the outer surface, the packagings contain moisture controlling material. The permeability of moisture from the outer surface to the moisture controlling material is less than the permeability of moisture from the inner surface to the moisture controlling material to provide selective moisture transfer between the moisture controlling material and the interior volume of a sealed package formed, at least in part, from the packaging material. The nature of the packaging material and the moisture controlling material can be tuned to control the relative humidity within the sealed inner volume.

## Claims

### Claim 1

An inner package for smoking articles comprising:
a flexible multilayer packaging material comprising:
a moisture barrier layer; and
a moisture control layer comprising a moisture controlling material comprising a humidity regulating salt solution,
wherein the moisture controlling material is a material that can sorb or desorb moisture, and
wherein the moisture control layer defines all or substantially all of a sealed inner surface of the inner package,
wherein the moisture control layer has a water vapor transmission rate of greater than 20 g/m2 per 24 h at 38° C. and 90% relative humidity.

### Claim 2 (depends on 1)

The inner package of claim 1, wherein the moisture control layer is moisture permeable.

### Claim 3 (depends on 2)

The inner package of claim 2, wherein the moisture control layer is a heat sealable layer.

### Claim 4 (depends on 1)

The inner package of claim 1, wherein the moisture barrier layer and the moisture control layer are sealable layers.

### Claim 5 (depends on 1)

The inner package of claim 1, wherein an additional heat-sealable layer is positioned on the moisture barrier layer as an outer layer.

### Claim 6 (depends on 1)

The inner package of claim 1, wherein an additional heat-sealable layer is positioned on the moisture controlling layer as an inner layer, wherein the additional heat-sealable layer is moisture permeable.

### Claim 7 (depends on 6)

The inner package of claim 6, wherein the additional heat-sealable layer is free of the moisture controlling material.

### Claim 8 (depends on 1)

The inner package of claim 1, wherein the moisture barrier layer has a water vapor transmission rate of less than or equal to 20 g/m2 per 24 h at 38° C. and 90% relative humidity.

### Claim 9 (depends on 1)

The inner package of claim 1, wherein the moisture controlling material is configured to maintain a relative humidity between 20% and 90% in a interior volume defined by the packaging material when sealed.

### Claim 10 (depends on 1)

The inner package of claim 1, wherein the humidity regulating salt solution is selected from the group consisting of potassium carbonate solution, magnesium acetate solution, sodium acetate solution, ammonium chloride solution, ammonium nitrate solution, and sodium bromide solution.

### Claim 11 (depends on 1)

The inner package of claim 1, wherein the humidity regulating salt solution is impregnated in a polymer carrier.

### Claim 12 (depends on 1)

The inner package of claim 1, wherein the moisture controlling material comprises a polyether polyamide.

### Claim 13 (depends on 1)

A container, comprising:
a housing comprising a box and a lid hingedly attached to the box; and
the inner package of claim 1 disposed within the housing and defining an interior volume for housing one or more consumer goods,
wherein the inner package defines an access opening through which the one or more consumer goods can be removed.

### Claim 14 (depends on 13)

The container of claim 13, wherein the inner package comprises a resealable flap, wherein the access opening is covered by the flap when the flap in a closed position, and wherein the access opening is at least partially uncovered when the flap is in an open position.

### Claim 15 (depends on 13)

The container of claim 13, wherein a flap is attached to an inner surface of the lid of the box such that upon opening the lid the flap is separated from the inner package along a line of weakness.