The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 2024
Filed:
Mar. 18, 2020
Philip Morris Products S.a., Neuchatel, CH;
Philip Morris Products S.A., Neuchatel, CH;
Abstract
A method of manufacturing an aerosol-generating film for generating an aerosol upon heating is provided, including: preparing a film-forming composition including a cellulose based film-forming agent, a non-cellulose based thickening agent, at least about 30 wt percent of water, and at least about 20 wt percent of a polyhydric alcohol being glycerin; forming a layer of the composition less than 1 millimeter thick; and heating the layer to evaporate at least some of the water to obtain the film, the layer being heated to a temperature and for a time such that the film contains less than or equal to about 30 wt percent of water, and the step of preparing the composition further includes dissolving the cellulose based agent and the non-cellulose based thickening agent in the water to form a water-based preparation, defoaming the preparation, and mixing the polyhydric alcohol into the preparation to obtain the composition.