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US3933159A Expired / Lapsed US ⏱️ 0.0 years remaining

Manufacture of mouthpiece cigarettes

Assignee: Mpac Group PLC
•
Filing: 1974-03-26
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Granted: 1976-01-20
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Expires: 1994-03-26
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Abstract

Abstract Using a hot melt adhesive on the strip of material uniting a mouthpiece to a cigarette, and hardening the adhesive while the strip is rolled around the assemblage by heat lost to a surface along which the assemblage is rolled. The rolling takes place between a rolling plate and a drum which is heated to reactivate the adhesive prior to rolling.

Inventors

  • 👤 Desmond Walter Molins

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 15:19
CPC Classifications
A; A24; A24C; A24C5/00; A24C5/47; A24C5/471; A24C5/472

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 202 words
Apparatus for making mouthpiece cigarettes by uniting a length of mouthpiece material to each cigarette in abutting relationship thereto by means of an encircling uniting band, comprising a rotatable drum, means to apply molten hot melt adhesive to a continuous web of uniting band material, means to deliver the web onto the drum at a temperature slightly below the melting point of the adhesive and at a speed less than the peripheral speed of the drum, severing means to sequentially cut off the successive foremost ends of the web on the drum to form a succession of uniting bands spaced apart by a gap, heating means to apply sufficient heat to the drum to re-activate the adhesive on the uniting bands, a rolling member having a concave part-cylindrical surface spaced from the drum to define a rolling passage therebetween, and conveyor means to directly deliver cigarette assemblages each with an aligned and abutted mouthpiece portion to said passage in timed relationship with the leading end of a re-activated uniting band so that said re-activated band is rolled in said passage around the preceding assemblage, the temperature of the rolling member being low enough to cool the adhesive to cause it to set.
Claim 2
Dependent Claim 202 words
Apparatus for making mouthpiece cigarettes by uniting a length of mouthpiece material to each cigarette in abutting relationship thereto by means of an encircling uniting band, comprising a rotatable drum, means to apply molten hot melt adhesive to a continuous web of uniting band material, means to deliver the web onto the drum at a temperature slightly below the melting point of the adhesive and at a speed less than the peripheral speed of the drum, severing means to sequentially cut off the successive foremost ends of the web on the drum to form a succession of uniting bands spaced apart by a gap, heating means to apply sufficient heat to the drum to re-activate the adhesive on the uniting bands, a rolling member having a concave part-cylindrical surface spaced from the drum to define a rolling passage therebetween, and conveyor means to directly deliver cigarette assemblages each with an aligned and abutted mouthpiece portion to said passage in timed relationship with the leading end of a re-activated uniting band so that said re-activated band is rolled in said passage around the preceding assemblage, the temperature of the rolling member being low enough to cool the adhesive to cause it to set.
Claim 3
Dependent Claim 42 words
Apparatus as claimed in claim 1 wherein the means to deliver the web comprises means to space the adhesive applying means such a distance upstream of the drum that the molten adhesive is cooled below its melting point by natural heat loss.
Claim 4
Dependent Claim 21 words
Apparatus as claimed in claim 2 further comprising fan means to apply a forced flow of cooling air to the adhesive.
Claim 5
Dependent Claim 23 words
Apparatus as claimed in claim 1 wherein the rolling member is maintained at said low temperature by means for passing cooling fluid therethrough.
Claim 6
Dependent Claim 44 words
Apparatus as claimed in claim 1 wherein the conveyor means delivers each assemblage into the gap between two reactivated uniting bands, so that the assemblage is initially in front of said leading end of a reactivated uniting band which is to be rolled therearound.

References Cited (Backward Citations)

CA731964A Cited
GB190006495A Cited
US3094128A Cited
US3420243A Cited
US3470884A Cited
US3526233A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-01-19 1979-07-21 1980-01-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-01-19 1983-07-21 1984-01-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-01-19 1987-07-21 1988-01-20 $7700.00 Window Closed / Lapsed

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