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Filter manufacturing apparatus

A technology for manufacturing equipment and filters, which can be used in non-woven fabrics, e-liquid filter elements, textiles, and papermaking, and can solve problems such as high material waste

Active Publication Date: 2018-08-31
PHILIP MORRIS PROD SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The process of treating filter material with steam to harden it and then shape it into a continuous, relatively rigid strip is a relatively delicate process and produces a very high waste of material

Method used

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  • Filter manufacturing apparatus

Examples

Experimental program
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Embodiment Construction

[0040] figure 1 The number 1 in indicates the entire apparatus, which is used to produce a filter strip (not shown) or filter assembly, preferably for an aerosol-generating article.

[0041] The apparatus 1 comprises conveying means 3 for conveying filter material, eg cellulose acetate or filter tow, in a conveying or feeding direction. Furthermore, the apparatus 1 comprises an inlet unit 2 adapted to form a continuous flow or strip of filter material wetted with a hardening fluid such as triacetin or a plasticizer. The filter material is fed into the inlet unit 2 via a conveying device 3 . The wetting of the filter material with the plasticizer takes place in a plasticizer unit not shown in the figure but known in the art. The plasticizer unit is located upstream of the inlet unit 2 . Downstream of the inlet unit 2, the apparatus comprises a strip forming unit 4, arranged in series to the inlet unit 2 and adapted to receive a stream or strip of filter material and react th...

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PUM

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Abstract

The present invention relates to a filter manufacturing apparatus comprising: a feed path adapted to continuously feed a filter material along a longitudinal transport direction; a forming device connected to a terminating end of the feed path and adapted to form the filter material into a continuous filter body and to deliver the formed continuous filter body, the forming device including: a tubular element (8) adapted to allow the filter material to pass therethrough to form the filter tow material into the continuous filter body; and a steam generator (9) adapted to produce steam, the steamgenerator being in fluid communication with the tubular element to supply steam to the filter material; a drain channel (10) in fluid communication with the tubular element adapted to drain fluid from the tubular element; a valve adapted to open and close the drain channel so as to allow or block discharge of fluid from the tubular element.

Description

technical field [0001] The present invention relates to apparatus for producing filters for aerosol-forming articles, and in particular, but not exclusively, for producing unpackaged filters. Background technique [0002] It is known in the tobacco industry to make paperless filter strips, also known as non-wrapped filters or cellulose acetate (NWA), using a continuous strip of filter material, usually cellulose acetate, which is fed continuously The tow bands are advanced along the longitudinal through-paths of the forming beams by means of an impregnation station where the strips are impregnated with a plasticizer such as triacetin and then transformed into generally cylindrical tow bands by pressurized air ; said shaped rail comprises a first portion, in this case a stabilizing portion, and a second portion, in this case a drying portion. Along said first portion, the hardened substance in the tow band is reacted by heat such as blown steam or microwaves. Along said sec...

Claims

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Application Information

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IPC IPC(8): A24D3/02D04H3/12
CPCA24D3/0233A24D3/022A24D3/02
Inventor G·卡普里尼P·D·拉波尔塔
Owner PHILIP MORRIS PROD SA
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