JP2023503671A - Rolling Cigarette Paper Sheet Bobbin & Booklet Manufacturing Process - Google Patents

Abstract

The present invention relates to a bobbin, a sheet and a booklet of sheets of hand-rolled cigarette paper, and a process for manufacturing a booklet of paper sheets of hand-rolled cigarette paper. [Selection drawing] Fig. 1

Description

The present invention relates to a sheet of paper for roll-your-own cigarettes.

A sheet of paper for rolling cigarettes is generally in the form of a rectangle with an adhesive strip applied along one of the long sides of the rectangle. These sheets are sold in booklet form with approximately 100 sheets. A user removes a sheet from the booklet, places tobacco on the sheet, and then creates a cigarette by moistening the adhesive strip and overlapping the sheet.

In the past, paper sheets of hand-rolling cigarette papers were manufactured from webs of hand-rolling cigarette paper cut into the shape of a paper bobbin. The width of this bobbin is substantially the same as the width of the sheet. An adhesive strip is then applied to one of the two long sides in the machine direction of the bobbin of the cigarette paper, and the bobbin is then dried. The dried bobbins are then cut into wrapping paper sheets for hand-rolled cigarettes.

The basis weight of the wrapping paper for hand-rolled cigarettes is very low. Therefore, there is a risk that the sheet will easily tear during manufacture. The most problematic is the process of applying the adhesive strips to the bobbins. The reason for this is that, conventionally, this process was performed using a pressure nozzle, and there was a risk that the bobbin would easily break. In particular, it is more likely to occur when the width of the bobbin is 10 cm or less. In addition, the adhesive strip is deposited along one of the long sides of the bobbin, and therefore a portion of the adhesive strip is deposited on the outside of the bobbin and loses material to form a cigarette. may run out of adhesive strips.

These problems have forced the conventional process of making paper for hand-rolled cigarettes to periodically come to a halt. The paper advance speed in these processes can also be optimized.

For these reasons, the productivity of these processes has not been optimal.

Therefore, there is a need for an effective solution to improve productivity in the manufacturing process of wrapping paper sheets for hand-rolled cigarettes.

It is therefore possible to meet this need by applying multiple moisture-activated adhesive strips to a web of hand-rolled cigarette paper and then cutting into bobbin shapes. It is the credit of the present inventors to discover

Briefly, a first aspect of the present invention is a process for manufacturing a hand-rolled cigarette paper bobbin comprising: (a) adhering the paper wrapper with n wet-activated adhesive strips extending in the machine direction; (b) applying n wet-activated adhesive strips to a paper web of hand-rolled cigarettes to obtain an adhesive web; cutting the adhesive web of the cigarette paper in the machine direction along n−1 wet-activated adhesive strips to obtain n bobbins of cigarette paper, where n is an integer greater than or equal to 2. is a process configured to be

Unlike the conventional process of depositing a single wet-activated adhesive strip directly onto a hand-rolling cigarette paper bobbin, n wet-activated adhesive strips are deposited on a hand-rolling cigarette paper by the process of the present invention. deposited on a web of hand-rolled cigarette paper wider than the width of the bobbin. In step (a) in the manufacturing process of the hand-rolling cigarette paper bobbins of the present invention, the risk of tearing the hand-rolling cigarette paper is lower than in conventional processes. Thus, the manufacturing process for the hand-rolled cigarette paper bobbins of the present invention does not require periodic shutdowns.

This is rather than cutting a web of cigarette paper into the shape of n cigarette paper bobbins and applying a single strip to each of the n cigarette paper bobbins. It is more efficient to apply n wet-activated adhesive strips to a web of cigarette papers and then cut the web of cigarette papers into n bobbins of cigarette papers. is.

Further, only one of the n wet-activated adhesive strips is applied to one of the long sides of the paper web of the hand-rolled cigarette. Therefore, compared to conventional processes, the process of the present invention can significantly reduce wet-activated adhesive loss.

As a result, the productivity in the manufacturing process of the hand-rolled cigarette paper bobbin of the present invention is higher than the conventional manufacturing process of the conventional hand-rolled cigarette paper bobbin.

Another aspect of the present invention is a sheet of hand-rolling cigarette paper comprising the step of (c) cutting a hand-rolling cigarette paper bobbin produced by the hand-rolling cigarette paper bobbin manufacturing process of the present invention. about the manufacturing process of

Another aspect of the present invention is a hand-rolling cigarette paper comprising the step of (d1) forming a stack of hand-rolling cigarette paper sheets manufactured by the hand-rolling cigarette paper sheet manufacturing process of the present invention. to a method of manufacturing a booklet of sheets of

Another aspect of the present invention is the step of (d2) forming a stack of hand-rolled cigarette paper bobbins manufactured by the hand-rolled cigarette paper bobbin manufacturing process of the present invention, followed by the stack of bobbins. (e) of cutting the (e).

The process of the present invention advantageously allows the manufacture of hand-rolled cigarette bobbins and paper sheets with wet-activated adhesive strips at a higher productivity than that of conventional manufacturing processes.

Figure 4 shows the adhesive web of paper with four wet-activated adhesive strips applied at the end of step (a) of the process of the invention; Figure 4 shows the four bobbins obtained at the end of step (b) of the process of the invention;

In one embodiment, the present invention relates to a process for manufacturing a paper bobbin for hand-rolled cigarettes, comprising the following steps. (a) applying n wet adhesive strips to a web of cigarette papers to obtain a web of cigarette papers with n wet adhesive strips extending in the machine direction; and (b) wet-activating n−1 of the adhesive webs of the paper to obtain n bobbins of hand-rolling cigarette paper with a wet-activated adhesive strip along one of its long sides. and cutting in the machine direction along the adhesive strip. A process wherein n is configured to be an integer greater than or equal to 2.

In the sense of the present invention, "roll-your-own cigarette paper" is to be understood as being used for rolling cigarettes. Hand-rolled cigarette papers may be made from wood pulp, tobacco fibers, hemp fibers, flax fibers, sisal fibers, cocoa shell fibers, cannabis fibers, rice straw, alpha grass fibers, and combinations thereof. Hand-rolled cigarette papers have a low basis weight and are thinner than commercially available cigarette papers. For example, the basis weight of the wrapping paper, measured on the outside of the adhesive strip, is between 10 g/m ² and 50 g/m ² , especially between 12 g/m ² and 25 g/m ² , especially between 13 g/m ² and 15 g/m ² . may be The thickness of the wrapping paper may be between 5 μm and 100 μm, in particular between 10 μm and 60 μm, especially between 20 μm and 50 μm.

In the sense of the present invention, "web of rolling cigarette papers" is understood to mean the abovementioned rolling cigarette papers, the general shape of which is rectangular once the web is unrolled. Generally, the length of the rectangle is tens or thousands of meters and the width is 0.6 m or more, especially 1 m or more, especially 1.2 m or more, or even 1.5 m or more. be.

In the sense of the present invention, a “rolling cigarette paper bobbin” is understood to mean a rolling cigarette paper as described above, the general shape of which is rectangular when the bobbin is unrolled and whose It has a wet activated adhesive strip along one of the long sides of the rectangle. The width of the rectangle is substantially equal to the width of a paper sheet of a hand-rolled cigarette, ie between 30 mm and 75 mm, in particular about 36 mm, about 44 mm or about 53 mm. Generally, the length of the rectangle is from hundreds to thousands of meters, for example from 1000m to 15000m, especially from 3000m to 10000m, especially from 5000m to 8000m. The length of the rectangle may also be 1 or tens of meters, in which case the sheet is called a roll. The length of the rectangle may also be 1 m or more, in which case the sheet is called a ream.

A wet-activated adhesive strip (also referred to as an adhesive strip) comprises a wet-activated adhesive.

In the sense of the present invention, a "wet-activated adhesive" is understood to mean a compound that exhibits adhesive properties on contact with water or moisture, such as saliva. The wet-activated adhesive (also called adhesive) can be any type of wet-activated adhesive known to those skilled in the art. For example, the adhesive may be selected from sugar solutions, modified or unmodified polysaccharides, gums and mixtures thereof, especially gums.

Modified or unmodified polysaccharides can include starches, alginates, dextrins, cyclodextrins, or mixtures thereof.

Gums may be of natural origin or synthetic. Examples of gums of natural origin are gum acacia, gum arabic, guar gum, gum karaya or pectin, especially gum arabic.

The weight concentration of the wet-activatable adhesive in the wet-activatable adhesive strip of the bobbin of the hand-rolling cigarette paper is, for example, at least 95%, in particular at least 97%, especially 99%, not considering the hand-rolling paper. %, or even 100%.

The adhesive strip may also contain additives to impart properties other than adhesiveness to the adhesive strip.

The additives may be, for example, plasticizers, antifoams, colorants, aromatic compounds or mixtures thereof, in particular plasticizers, antifoams or mixtures thereof.

Sorbitol is an example of a plasticizer contemplated for use in the context of the present invention.

Colorants include natural or artificial food colors, especially natural food colors. Natural coloring agents include caramel, chlorophyllin, paprika-derived pigment, beet root-derived pigment, carotene, turmeric-derived pigment, cochineal, annatto-derived pigment, lutein, sunflower-derived pigment, anthocyanin, malt-derived pigment, charcoal, and thermoluminescent Examples include dyes.

Aromatic compounds may be selected from glycosylated modified flavors, encapsulated flavors (cyclodextrins, membranes or matrices), natural flavors and mixtures thereof. Aroma compounds may be selected from EVG, emanates, synthetic or natural cannabidiol (CBD), synthetic or natural tetrahydrocannabinol (THC), terpenes and mixtures thereof, among others.

The basis weight of the adhesive strip depends on the technique of step employed in (a). Generally, the basis weight of the adhesive strip is 8 g/m ² , especially 5.5 g/m ² to 7.5 g/m ² , especially 5 g/m ² to 6 g/m 2 , except for hand-rolled cigarette papers. .5 g/m ² or less.

The basis weight of the adhesive strip is determined by weighing the mass of a 1 ^m2 section of the paper wrapper bobbin without the adhesive strip and weighing the 1 ^m2 section of the paper wrapper bobbin with the adhesive strip, resulting in two masses. is determined by subtracting

Generally, the width of the adhesive strip is between 1 mm and 10 mm, especially between 4 mm and 8 mm, especially between 5 mm and 7 mm.

The adhesive strip may have a continuous shape or a discontinuous shape.

Continuous shapes include straight lines, zigzag patterns, crenellated or wavy patterns, and the like.

Examples of discontinuous shapes include discontinuous lines of geometric shapes, logos, or combinations thereof. A line may be straight or curved.

Examples of geometric shapes include polygons, circles, ellipses, ovals, or combinations thereof. Polygons include triangles, quadrilaterals such as squares, rectangles, or rhombuses, pentagons, hexagons, or octagons.

The logo may be that of a manufacturer of hand-rolled cigarette papers.

According to one embodiment, n is an integer less than or equal to 100, in particular 30-55.

For example, step (a) may be performed at a speed of 70 m/min or more, particularly 100 m/min or more, especially 150 m/min or more, further 200 m/min or more. .

Step (a) may be performed by any technique known to those skilled in the art. For example, step (a) includes a wet activated adhesive solution and etching, flexography, heliography, flexogravure, gravure, spray painting, wetting and dipping, particularly flexography, heliography and A technique such as gravure printing may be used. Each of these techniques may be followed by drying.

According to one embodiment, step (a) is performed by flexographic printing, followed by drying if desired.

Flexographic printing is a relief technique well known to those skilled in the art in which a flexible relief plate called a negative film is impregnated with the printing liquid and the substrate and the impregnated negative film are brought into contact with each other to apply the printing liquid onto the substrate. the printing process.

In the context of the present invention, flexographic printing involves printing n negative films impregnated with a wet-activated adhesive solution onto a hand-rolled cigarette paper so that n strips of adhesive can be applied to a web of hand-rolled cigarette paper. can be advantageously brought into contact with the web of wrapping paper.

Flexographic printing can also be performed at four times or more the paper travel speed compared to the speed of conventional processes. Therefore, the productivity of the manufacturing process of the paper bobbins for hand-rolled cigarettes of the present invention is thus higher than that of conventional processes.

Flexographic printing, in addition to the speed of advance and the use of n negative films, is a gentle application method that greatly reduces the risk of tearing the web of cigarette paper when performing step (a). can do.

Advantages of flexographic printing include accuracy, simplicity, and the low cost of negative films.

Furthermore, flexographic printing is a flexible method by which the shape of the adhesive strip can be obtained depending on the shape of the negative film.

Furthermore, the machine and cross-machine direction tensile strengths of the bobbins produced after the coating step of (a) performed by the flexographic press are greater than those of bobbins produced by conventional processes. Therefore, the bobbins produced after the applying step of (a), which is performed by flexographic printing, are, for example, cut into sheets or formed into a stack of bobbins after the steps of forming a stack of bobbins. It can be easily used in subsequent steps of the manufacturing process of the bobbin of the present invention, such as cutting.

A wet-activated adhesive solution (also referred to as an adhesive solution) comprises a wet-activated adhesive. The weight concentration of the wet-activated adhesive in the adhesive solution may be from 30% to 60%, especially from 32% to 45%, even from 35% to 40%.

Adhesive solutions are generally aqueous solutions. The wet-activated adhesive solution may further contain additives as described above.

According to one embodiment, the adhesive solution may comprise a wet-activated adhesive solution, a plasticizer, and a defoamer, the weight concentration of the wet-activated adhesive being between 30% and 50%, the weight of the plasticizer being The concentration is 0.1% to 0.5%, and the mass concentration of the defoamer is 0.5% to 1%.

FIG. 1 shows an adhesive web 1 of wrapping paper at the end of the process of (a) of the invention, including four adhesive strips 2 applied.

The step (b) of cutting the adhesive web of paper wrapper is a conventional cutting step known to those skilled in the art. Accordingly, the person skilled in the art knows how to adapt the manufacturing process of the paper bobbin of the hand-rolled cigarette according to the invention.

For example, the step (b) of cutting can be performed at a paper advance speed of 100 m/min or more, particularly 500 m/min or more, especially 750 m/min or more, and furthermore 1000 m/min or more.

FIG. 2 shows four hand-rolled cigarette paper bobbins 11, each bobbin 11 provided with an adhesive strip 2 along one of its long sides.

The bobbins produced by the process of the present invention can be cut into sheets of hand-rolling paper that are then used to form hand-rolling cigarettes.

Accordingly, another aspect of the present invention is to manufacture a sheet of cigarette paper by using at least one bobbin of cigarette paper manufactured by the above-described process for manufacturing a cigarette paper bobbin. A process for manufacturing a sheet of hand-rolled cigarette paper, comprising the step of cutting (c).

In the sense of the present invention, a "sheet of rolling cigarette paper" is, as mentioned above, generally rectangular in shape and provided along one of the long sides of said rectangle, a sheet of paper such as described above. It should be understood to mean a cigarette paper with an adhesive strip. Generally, the length of the rectangle is between 50mm and 110mm, while the width may vary between 30mm and 75mm.

The step (c) of cutting the bobbin of the paper of the hand-rolled cigarette is a conventional cutting step known to those skilled in the art. Accordingly, the person skilled in the art knows how to adapt the manufacturing process of the sheets of cigarette paper according to the invention.

Sheets of hand-rolled cigarette papers produced by the process of the present invention are sold in booklet form.

Accordingly, the present invention also provides a method for manufacturing a hand-rolling cigarette paper sheet comprising the step of (d1) forming a stack of hand-rolling cigarette paper sheets manufactured by the hand-rolling cigarette paper sheet manufacturing process of the present invention. It relates to the process of manufacturing sheet booklets.

The step of forming (d1) includes, for example, stacking sheets of hand-rolled cigarette papers one by one, or stacking one sheet of hand-rolled cigarette papers into two sheets of hand-rolled cigarette papers. It may be done by inserting in between.

For example, the forming step of (d1) may be performed by inserting the sheet using equipment sold by IMAtec, Luxembourg.

According to one embodiment, the stack of sheets formed after step (d1) may undergo a step of combining to form a stack of combined sheets.

The stack of sheets, bonded or not, may then be introduced into the case.

Accordingly, the present invention also provides the steps of (d2) of forming a stack of hand-rolled cigarette paper bobbins manufactured by the hand-rolled cigarette paper bobbin manufacturing process of the present invention, followed by a stack of bobbins. (e) of cutting.

In step (d2), the stack of bobbins is obtained by unrolling the bobbins of hand-rolled cigarette papers and stacking the unrolled hand-rolled cigarette paper bobbins one by one on each other, or It may be formed by inserting a bobbin of cigarette paper between two unrolled cigarette paper bobbins.

According to one embodiment, the stack of sheets formed in step (e) of cutting the stack of bobbins may undergo a step of combining to form a combined stack of sheets.

According to one embodiment, the stack of bobbins formed in step (d2) may undergo a step of bonding prior to the step of cutting to form a stack of bonded sheets.

The stack of sheets, bonded or not, may then be introduced into the case.

example

Example 1 according to the invention

An aqueous gum arabic solution is applied by flexographic printing to a web of hand-rolled cigarette paper such that four adhesive strips extend in the machine direction. The web is then dried and cut to obtain four bobbins, each provided with an adhesive strip containing gum arabic.

The bobbins are then cut into sheets.

Each sheet has a rectangular shape with a length of 110 mm and a width of 44 mm, with a continuous adhesive strip along one of the two long sides of the sheet.

This process produces sheets at a speed of 200 m/min.

Comparative example 2

A web of wrapping paper is cut into four bobbin shapes.

An aqueous gum arabic solution is applied to each bobbin of a hand-rolled cigarette paper using a nozzle.

Each sheet had a rectangular shape of 110 mm length and 44 mm width, with a continuous adhesive strip on one of the two long sides of the sheet.

The method of Comparative Example 2 produces sheets at a speed of 55 m/min.

Thus, the manufacturing process of the sheet according to example 1 (invention) was four times faster than the manufacturing process of the sheet according to example 2 (comparative).

Therefore, the productivity of the process of Example 1 is higher than that of the process of Example 2.

Claims (13)

A process for manufacturing a paper bobbin for a hand-rolled cigarette comprising:
(a) applying n of said wet-activated adhesive strips to said wrapping paper of said hand-rolling cigarette to obtain an adhesive web of said wrapping paper with n wet-activated adhesive strips extending in the machine direction; applying to the web;
(b) n-1 said adhesive webs of said wrapping papers to obtain n said bobbins of said wrapping papers of said hand-rolled cigarettes with said wet-activated adhesive strip along one of their long sides; cutting in the machine direction along the wet-activated adhesive strips;
A process wherein n is configured to be an integer greater than or equal to 2. 2. The process of claim 1, wherein said wet-activated adhesive is selected from molasses, polysaccharides, starches and gums, and mixtures thereof. Wetting by techniques such as etching, flexography, heliography, flexogravure, gravure, spray painting, wetting, and immersion, especially flexography, heliography, flexogravure, and gravure. 3. The process of claim 1 or 2, carried out with an activated adhesive solution. The process of any one of claims 1-3, wherein step (a) is performed by flexographic printing. A process according to any preceding claim, wherein the wet-activated adhesive strip exhibits a basis weight of 8 g/m ² or less. A process according to any preceding claim, wherein said wet-activated adhesive strip exhibits a continuous or discontinuous morphology. 7. The process of claim 6, wherein said continuous form is selected from straight lines, zigzag patterns, crenellated patterns or wavy patterns. 7. The process of claim 6, wherein the discontinuous features are selected from discontinuous lines of polygons, discontinuous lines of geometric shapes, logos, and combinations thereof. A process for manufacturing the wrapping paper sheet of the hand-rolled cigarette, comprising:
(c) a process comprising cutting the bobbin of the paper of the hand-rolled cigarette manufactured by the process of any one of claims 1-8. A process for producing a booklet of the sheet of wrapping paper of the hand-rolled cigarette, comprising:
(d1) forming a stack of said sheets of said paper of said hand-rolled cigarette manufactured by the process of claim 9. A process for producing a booklet of the wrapping paper sheet of the hand-rolled cigarette, comprising:
(d2) forming a stack of the bobbins of the paper of the hand-rolled cigarette manufactured by the process of any one of claims 1-8;
(e) cutting said stack of said bobbins to form said stack of said sheets. For the stack of the sheets formed by step (d1) or the stack of bobbins cut and formed by step (e) to form the combined stack of sheets, 12. A process according to claim 10 or 11, comprising the step of being coupled together. Claim 11, comprising bonding the stack of bobbins formed by step (d2) together prior to cutting the stack of bobbins to form the bonded sheet. process described in .

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