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US 4,361,156 AGranted
Method and applicator for applying glue to a travelling stream of tipping paper
AssigneeLiggett Group Inc.
InventorFloyd V. Hall
Life of this patent
Estimating the term…
Abstract
The applicator roll is provided with two recesses to apply uniform layers of glue to a travelling stream of tipping paper. In addition, the applicator roll has a series of spaced apart grooves in each recess so as to apply additional stripes of glue onto the tipping paper near the edges. The additional stripes of glue provide for a more secure bonding of the tipping paper to the tobacco column of the filter cigarette construction.
Claims13
An applicator for applying glue to a travelling stream of tipping papers, said applicator including:
- a glue pot containing a reservoir of glue;
- a transfer roll rotatably mounted on said glue pot and having a circumferential surface projecting into said pot to receive glue thereon;
- and
- an applicator roll rotatably mounted on and over said transfer roll to receive a layer of glue thereon, said applicator roll having a pair of rims disposed in rolling contact with said transfer roll, each said rim being disposed at a respective edge of said applicator roll, at least one row of circumferentially spaced apart elongated grooves therein spaced laterally from said rims, each said groove being sized and shaped to receive a stripe of glue therein.
1 more element
In combination:
- means for conveying a stream of tipping paper through a predetermined path;
- and
- an applicator in said path for applying glue to an underside of the travelling stream of tipping paper, said applicator including:
- a glue pot containing a reservoir of glue;
- a transfer roll rotatably mounted over said glue pot and having a circumferential surface projecting into said pot to receive glue thereon;
- and
- an applicator roll rotatably mounted over said transfer roll to receive a layer of glue therefrom and under the stream of tipping paper to deliver the glue thereto, said applicator roll having a pair of rows of circumferentially spaced apart elongated grooves therein to receive stripes of glue and a raised circumferential rib centrally of said rows and in contact with said transfer roll.
4 more elements
In combination,
- means for conveying a stream of tipping paper through a predetermined path;
- an applicator for placing at least one row of circumferentially spaced apart stripes of glue on one surface of the conveyed stream, said applicator including a glue pot containing a reservoir of glue;
- a transfer roll rotatably mounted over said glue pot and having a circumferential surface projecting into said pot to receive glue thereon;
- and an applicator roll rotatably mounted over said transfer roll to receive a layer of glue therefrom, said applicator roll having a pair of rows of circumferentially spaced apart elongated grooves therein to receive stripes of glue and a raised circumferential rib located centrally of said rows and in contact with said transfer roll;
- means for positioning a series of filters in alignment with the conveyed stream with each filter disposed transversely of the conveyed stream;
- means for positioning a series of tobacco columns in alignment with the conveyed stream with each tobacco column disposed coaxially of a respective filter and transversely over a respective glue stripe;
- means for severing the conveyed tipping paper stream transversely between each respective pair of glue stripes to form a tipping paper strip;
- and
- means for wrapping each strip circumferentially about an aligned tobacco column and filter to secure the tobacco column and filter together.
6 more elements
A method of securing a filter to a tobacco column, said method comprising the steps of:
- providing a strip of tipping paper with a uniform layer of glue on a surface thereof and a superposed stripe of glue on said layer spaced laterally from near one edge of said surface;
- disposing a filter on said surface of the tipping paper transversely of said stripe of glue;
- disposing a tobacco column coaxially of the filter and transversely over the glue stripe;
- and
- wrapping said stripe circumferentially about the filter and tobacco column to secure the filter and tobacco column together.
2 more elements
An applicator for applying glue to a travelling stream of tipping paper, said applicator including:
- a glue pot containing a reservoir of glue;
- a transfer roll rotatably mounted on said glue pot and having a circumferential surface projecting into said pot to receive glue thereon;
- and
- an applicator roll rotatably mounted on and over said transfer roll to receive a layer of glue thereon, said applicator roll having a pair of rows of circumferentially spaced apart elongated grooves therein, each said groove being sized and shaped to receive a stripe of glue therein and a raised circumferential rib located centrally of said rows.
1 more element
Dependencies are inferred from the claim text.