Mayr-Melnhof Karton has been granted a patent for a method to produce a diffusion-optimized tipping paper for tobacco products. The method involves plasma perforation of the tipping paper to reduce carbon monoxide, with in-line measurement of diffusivity and permeability. The perforation parameters are controlled to maximize diffusivity while maintaining a predefined permeability. A similar method is claimed for manufacturing a diffusion-optimized mouthpiece lining paper. GlobalData’s report on Mayr-Melnhof Karton gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Mayr-Melnhof Karton, sustainable packaging paper coating was a key innovation area identified from patents. Mayr-Melnhof Karton's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.

Method for producing diffusion-optimized mouthpiece lining paper for tobacco products

Source: United States Patent and Trademark Office (USPTO). Credit: Mayr-Melnhof Karton AG

A recently granted patent (Publication Number: US11653694B2) describes a method for manufacturing a diffusion-optimized mouthpiece lining paper for tobacco products. The method involves perforating a web of the mouthpiece lining paper using a perforation device, and then determining the diffusivity and permeability of the paper. The goal is to minimize the hole size of the perforation holes in order to maximize the diffusivity of the mouthpiece lining paper, while maintaining a pre-defined nominal permeability.

The method includes various steps and control loops to achieve the desired results. The pre-defined nominal permeability can be determined based on factors such as the degree of ventilation and drag resistance to be achieved for the mouthpiece lining paper. The paper thickness is also measured during the manufacturing process.

The perforation parameters of the perforation device are controlled to regulate the hole size and maintain a constant permeability. This can be achieved by adjusting parameters such as gas pressure, gas flow rate, gas composition, concentration of inert gas, opening area of the nozzle, distance of the tip from the nozzle, and speed of the web of the mouthpiece lining paper. The number of energy impulses or the density of the perforation holes can also be modified to regulate the hole size.

The patent also mentions the use of a plasma perforation device, which directs energy impulses towards the web of the mouthpiece lining paper to produce plasma. By reducing the energy density of the plasma, a certain percentage of the energy impulses can perforate the paper, resulting in minimized hole sizes. The perforation parameters of the plasma perforation device can be controlled to achieve the desired hole count or density, which corresponds to the pre-defined nominal permeability.

Overall, this patented method provides a systematic approach to manufacturing a diffusion-optimized mouthpiece lining paper for tobacco products. By controlling the perforation parameters and optimizing the hole size, the diffusivity of the paper can be maximized while maintaining a consistent permeability. This innovation has the potential to improve the smoking experience for consumers by enhancing the diffusion of harmful substances.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.