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Casting equipment for the production of cast webs of homogenized tobacco material

A homogenization and casting technology, applied in tobacco, tobacco processing, tobacco preparation, etc., can solve problems such as web rupture, web tearing, machine stop, etc., achieve uniform deposition, reduce defects, and improve circulation

Active Publication Date: 2019-05-10
PHILIP MORRIS PROD SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Standard casting methods and equipment may cause the slurry to be applied to the support during casting of the homogenized tobacco web due to changes in the physical properties of the slurry such as consistency, viscosity, fiber size, particle size, humidity, or slurry aging unexpected changes in
Non-optimal casting methods and equipment can lead to inhomogeneity and defects in the cast web of homogenized tobacco
[0006] Heterogeneity in the homogenized tobacco web creates difficulties for the subsequent processing of the homogenized tobacco web in the production of aerosol-generating articles
For example, inhomogeneity may lead to web tearing or even web breakage during web manufacture or further processing of the web
while this may cause e.g. the machine to stop
Furthermore, non-homogenized tobacco webs can create undesirable differences in aerosol delivery from aerosol-generating articles produced from the same homogenized tobacco web

Method used

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  • Casting equipment for the production of cast webs of homogenized tobacco material
  • Casting equipment for the production of cast webs of homogenized tobacco material
  • Casting equipment for the production of cast webs of homogenized tobacco material

Examples

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Embodiment Construction

[0067] first reference figure 1 , an apparatus for producing a web of homogenized tobacco material according to the invention is denoted and labeled with the reference numeral 1 .

[0068] The device 1 for producing a homogenized tobacco material web comprises a casting device 2 realized according to the invention and preferably also comprises a drying device downstream of the casting device 2 in the direction of movement of the homogenized tobacco material web 3.

[0069] The casting device 2 comprises: a casting box 4 into which slurry for forming a homogenized web of tobacco material is introduced; a pump 5 ; a casting blade 6 ; and, a movable support 7 . The casting box 4 may have any geometric shape and, in the depicted embodiment, is substantially prismatic. The casting box has an opening 43 corresponding to its bottom and the opening extends along the width of the casting box. The slurry from the buffer tank (not shown in the figure) is transferred by the pump 5 into...

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Abstract

The invention relates to a casting device for producing a cast web of homogenized tobacco material, said casting device comprising: a casting box (4) adapted to accommodate said slurry of homogenized tobacco material material; a movable support; a casting blade (6), which is suitable for casting the slurry contained in the casting box onto the movable support to form the homogenized A casting web; wherein the casting blade has a cross-section defining a blade edge comprising a first point having a first radius of curvature and a second point having a second radius of curvature, the first radius of curvature and the second radius of curvature are between about 1 and about 500 and are different from each other.

Description

technical field [0001] The present invention generally relates to a casting apparatus for producing a cast web of homogenized tobacco material. In particular, the present invention relates to a casting apparatus for producing a cast web of homogenized tobacco material suitable for use in aerosol-generating articles such as cigarettes or "heat-not-burn" tobacco-containing type products. Background technique [0002] Homogenized tobacco material is also used today in the manufacture of tobacco products (other than tobacco leaf). Such homogenized tobacco material is typically produced from parts of the tobacco plant, such as tobacco stems or tobacco dust, which are less suitable for the production of filler tobacco. Typically, tobacco dust is produced as a by-product during the handling of tobacco leaves during manufacture. [0003] The most commonly used forms of homogenized tobacco material are reconstituted tobacco sheet and cast leaf. The process of forming a sheet of h...

Claims

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Application Information

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IPC IPC(8): A24B3/14
CPCA24B3/14A24B15/12A24C5/01
Inventor S·H·索
Owner PHILIP MORRIS PROD SA
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