KR-20260067370-A - Aerosol generating article having a coated filter wrapper

KR20260067370AKR 20260067370 AKR20260067370 AKR 20260067370AKR-20260067370-A

Abstract

The present invention relates to an aerosol generating article comprising a substrate portion comprising an aerosol forming substrate. The aerosol generating article further comprises a filter element. The filter element comprises a cellulose filtration material. The filter element comprises a filter wrapper surrounding the cellulose filtration material. The filter wrapper has a basis weight of 50 gsm to 120 gsm. The filter wrapper comprises a fluid impermeable coating. The present invention also relates to a method for forming a filter element of an aerosol generating article.

Inventors

이바스쿠, 스테판 카탈린
야로스, 피오트르

Assignees

필립모리스 프로덕츠 에스.에이.

Dates

Publication Date: 20260512
Application Date: 20240911
Priority Date: 20230912

Claims (14)

As an aerosol-generating article, A substrate comprising an aerosol-forming substrate, and Includes filter elements, but, The above filter element comprises a cellulose filtration material and a filter wrapper surrounding the cellulose filtration material, wherein the filter wrapper has a basis weight of 50 gsm to 120 gsm and comprises a fluid impermeable coating, wherein the fluid impermeable coating comprises a fluorinated coating, an aerosol generating article.
In claim 1, the cellulose filter material is an aerosol generating article that does not contain cellulose acetate.
An aerosol generating article according to claim 1 or 2, wherein the cellulose filter material comprises a paper material, and preferably, the cellulose filter material comprises a non-woven paper material.
An aerosol generating article according to any one of claims 1 to 3, wherein the filter wrapper has a basis weight of 60 gsm to 110 gsm, and preferably the filter wrapper has a basis weight of 70 gsm to 100 gsm.
An aerosol generating article according to any one of claims 1 to 4, wherein the cellulose filter material comprises an additive.
In paragraph 5, the above additive is an aerosol-generating article that is a phenol scavenger.
An aerosol generating article according to claim 5 or 6, wherein the additive comprises polyethylene glycol, preferably 1% to 5% by weight, preferably 2% to 4% by weight, more preferably 3% by weight of polyethylene glycol.
An aerosol generating article according to any one of claims 5 to 7, wherein the cellulose filtration material comprises, as an additive, 1% to 5% by weight, preferably 2% to 4% by weight, more preferably 3% by weight of low molecular weight polyethylene glycol, and preferably has a weight average molecular weight (M w ) of 300 to 500, more preferably 350 to 450, and most preferably 400.
An aerosol generating article according to any one of claims 1 to 8, wherein the fluid impermeable coating is provided only on one side of the filter wrapper.
In claim 9, the fluid impermeable coating is provided on the side of the filter wrapper opposite the cellulose filtration material, an aerosol generating article.
An aerosol generating article according to any one of claims 1 to 10, wherein the fluid impermeable coating comprises a cellulose derivative, preferably comprising one or more of ethyl cellulose, microfibrillated cellulose, and carboxymethyl cellulose.
An aerosol generating article according to any one of claims 1 to 11, wherein the fluid impermeable coating comprises one or more of acrylate, styrene, butadiene, starch, starch derivative, cellulose derivative, alginate, polyvinyl alcohol, polyvinyl acetate, polyfluoroalkyl, gelatin, biowax, and gum.
An aerosol generating article according to any one of claims 1 to 12, wherein the fluid impermeable coating is composed of a hardness-enhancing coating.
A method for forming a filter element of an aerosol-generating article, - Step of providing cellulose filtration material, - A step of providing a filter wrapper, wherein the basis weight of the filter wrapper is 50 gsm to 120 gsm, - A step of coating the filter wrapper with a fluid impermeable coating, wherein the fluid impermeable coating includes a fluorinated coating, and - A method comprising the step of wrapping the filter wrapper around the cellulose filtration material.

Description

Aerosol generating article having a coated filter wrapper The present invention relates to an aerosol generating article. The present invention also relates to a method for forming a filter element of an aerosol generating article. It is known to provide an aerosol generating device for generating inhalable vapor. Such a device can heat an aerosol generating material to a temperature at which one or more components of the aerosol generating material volatilize without burning the aerosol generating material. The aerosol generating material may be provided as part of an aerosol generating article. The aerosol generating article may have a rod shape for insertion of the aerosol generating article into a cavity, such as a heating chamber, of the aerosol generating device. When the aerosol generating article is inserted into the heating chamber of the aerosol generating device, a heating element may be arranged in or around the heating chamber to heat the aerosol generating material. There is a growing demand to improve the sustainability of aerosol generating articles. In particular, materials traditionally used for filters of aerosol generating articles may not be optimal from a sustainability perspective. It would be desirable to provide an aerosol generating article with improved sustainability. It would be desirable to provide a filter element of an aerosol generating article with improved sustainability. It would be desirable to provide a filter material of a filter element of an aerosol generating article with improved sustainability. It would be desirable to provide a filter wrapper of a filter element of an aerosol generating article with improved sustainability. It would be desirable to provide a filter wrapper of a filter element of an aerosol generating article with improved visual characteristics. According to an embodiment of the present invention, an aerosol generating article is provided that may include a substrate portion comprising an aerosol forming substrate. The aerosol generating article may further include a filter element. The filter element may include a cellulose filtration material. The filter element may include a filter wrapper that surrounds the cellulose filtration material. The filter wrapper may have a basis weight of 50 gsm to 120 gsm. The filter wrapper includes a fluid impermeable coating. The filter wrapper may have a basis weight of 60 gsm to 100 gsm. The filter wrapper includes a fluid-impermeable coating. The filter wrapper may have a basis weight of 70 gsm to 90 gsm. According to an embodiment of the present invention, an aerosol generating article is provided, comprising a substrate portion including an aerosol forming substrate. The aerosol generating article further comprises a filter element. The filter element comprises a cellulose filtration material. The filter element comprises a filter wrapper surrounding the cellulose filtration material. The filter wrapper has a basis weight of 50 gsm to 120 gsm. The filter wrapper comprises a fluid impermeable coating. The sustainability of filter elements can be improved by using cellulose filtration materials in the filter elements. In particular, cellulose acetate, which has been conventionally used, may not be desirable from a sustainability perspective. Cellulose filtration materials can be a sustainable alternative to cellulose acetate. Filter wrappers can also be referred to as plug wrappers or plug wrappers. In this specification, grams per square meter, which is the unit of basis weight measurement, is abbreviated as "gsm". The basis weight of the filter wrapper (50 gsm to 120 gsm) may be a value excluding the fluid impermeable coating. The fluid impermeable coating may add 1 gsm to 2 gsm to the basis weight of the filter wrapper after application. Filter elements can also be represented as filter plugs. Cellulose filtration material may be the only filtration material used in aerosol-generating articles. That is, aerosol-generating articles may not contain any filtration material other than cellulose filtration material. The material may be placed upstream of the filter element. The aerosol-forming material of the material may be wrapped in a material wrapper. A cooling section may be positioned between the base material and the filter element. The cooling section may be tubular or hollow. Perforations may be placed on the side walls of the cooling section to allow ambient air to flow into the cooling section. The cooling section may be made of cardboard. One or more of the base material, cooling material, and filter element can be attached to each other through tipping paper. Fluid-impermeable coatings can prevent fluids. In particular, they can prevent liquid components of the filter element from immersing into the filter wrapper. If liquid components immerse into the filter wrapper, it can negatively damage the visual appearance of the filter wrapper and potentially cause the filter wrapper to become damp. In pa