Paper cavity filter
A filter and filter material technology, which can be used in e-liquid filter elements, applications, tobacco, etc., and can solve problems such as hindering the commercial use of paper filters and processing difficulties.
Pending Publication Date: 2022-01-18
ESSENTRA FILTER PRODUCTS DEVELOPMENT CO PTE LTD
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, attempts to match the filtration efficiencies of paper filters (especially tar and nicotine retention) to those of cellulose acetate filters by reducing the pressure drop have resulted in processing difficulties due to the impact on filter firmness
Therefore, the higher tar and nicotine retention of paper filters compared to cellulose acetate filters remains a disadvantage; preventing widespread commercial use of paper filters
Method used
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Embodiment Construction
[0045] figure 1 with figure 2 A tobacco smoke filter or filter element 100 according to an embodiment of the invention is shown. The tobacco smoke filter 100 comprises longitudinally extending cylindrical cores 106 having a length of 27 mm and a circumference of 24 mm, the cylindrical cores 106 comprising respective lengths of 9 mm, spaced longitudinally from each other, by Paper filter material (300 36g / m 2 SWM Corporation) formed two plugs 101 and 102. The sheet material formed by the non-porous plugging wrap joined around each plugging member 101 and 102 has a weight of 27 g / m 2 packages 103 and 104. Engaged around the plugs 101 and 102 is a hard plugging wrap of 78 g / m 2 Another wrapping member 105 to define a cavity 107 between the blocking members 101 and 102 with a length of 9 mm. The two ends of the further wrapping member 105 are flush with the ends of the blocking members 101 and 102 . The further wrapper 105 has overlapping longitudinal edges with an adhes...
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Abstract
The invention relates to a tobacco smoke filter or filter element comprising: a longitudinally extending core which includes a paper or other non-cellulose acetate containing filtering material and a wrapper engaged around the longitudinally extending core wherein the filter or filter element is readily biodegradable and wherein; the longitudinally extending core includes two plugs of paper or other non-cellulose acetate containing filtering material distanced longitudinally from each other and the wrapper engaged around the plugs of paper or other non-cellulose acetate containing filtering material defines a cavity between the plugs of paper or other non-cellulose acetate containing filtering material; and / or at least one end of the wrapper extends beyond the end of the longitudinally extending core around which is engaged to define a cavity or recess at the end of the filter.
Description
technical field [0001] The present invention relates to tobacco smoke filters or filter elements for smoking articles such as cigarettes. Background technique [0002] Tobacco smoke filters can be manufactured from a variety of different materials. Currently, 98% of commercial cigarette filters contain some amount of cellulose acetate (source: Euromonitor International). However, cellulose acetate is not capable of rapid biodegradation, therefore, cigarette filters (and cigarette butts) containing cellulose acetate may persist in the environment for many years. Therefore and taking into account new EU regulations (aiming to reduce the use of single-use plastics such as cellulose acetate filters) coming into force from 2021, there is interest in tobacco smoke filters that do not contain single-use plastics and are rapidly biodegradable is increasing day by day. [0003] An alternative filter material to cellulose acetate is paper. Tobacco smoke filters comprising paper as...
Claims
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IPC IPC(8): A24D3/04A24D3/06A24D3/10
CPCA24D3/04A24D3/06A24D3/10A24D3/068A24D3/061B01D39/18B01D2239/02
Inventor 帕特里克·梅雷迪思阿里耶夫·拉赫曼保罗·克拉克
Owner ESSENTRA FILTER PRODUCTS DEVELOPMENT CO PTE LTD