KR101978974B1 - cigarette base paper and method for manufacturing the same - Google Patents

Abstract

In order to improve productivity and quality, the present invention includes a first step wherein the first and second papers are drawn to face each other, and an adhesive is applied to each of the papers; A second end in which the first end and the second end of the second paper are aligned so as to be spaced apart from each other in correspondence with a predetermined coupling interval, and the first paper and the second paper are overlapped and overlapped to form a continuous paper in the longitudinal direction. step; And a pair disposed in the up and down direction, wherein the overlapping wrapper is pressurized in the longitudinal direction and sequentially rounded so as to sequentially increase the width profile gradient of the surface along the transfer direction of the overlapping wrapper. Is interconnected to provide a method for manufacturing a base paper tube for tobacco comprising a third step of forming a base paper tube continuously.

Description

Cigarette base paper and method for manufacturing the same

The present invention relates to a base paper tube for tobacco and a method of manufacturing the same, and more particularly, to a base paper tube for tobacco and a method of manufacturing the improved productivity and quality.

In general, the cigarette is wrapped in tobacco paper, such as tobacco leaves, and inhaling smoke generated by burning cigarette paper and tobacco, the filter is provided at the suction end to reduce the harmful components in the smoke and improve the taste of the smoke.

In detail, the cigarette paper (cigarette paper) may be made of flax or wood pulp as a paper for rolling the tobacco part, and the suction end means the rear part of the tobacco wrapped with cigarette paper.

Here, the filter may be variously provided as an acetate filter formed by agglomeration of acetate tow, a hollow filter having a hollow inside the acetate filter, a capsule filter with a built-in fragrance capsule, and a plurality of them. It is also possible to be used connected in the longitudinal direction.

However, since the conventional filter is provided to be in direct contact with the end of the tobacco, there is a problem that the filter is heated by the heat generated during the combustion of tobacco.

Accordingly, there is a problem that harmful smoke having an unpleasant aroma / taste is generated from the filter, and harmful substances are generated from the filter for purifying the noxious components, thereby harming the health of smokers.

Korea Patent Registration No. 10-0848175

In order to solve the above problems, the present invention is to provide a base paper tube for tobacco and a method of manufacturing the same that improves productivity and quality.

In order to solve the above problems, the present invention is drawn out so that the first paper and the second paper are opposed to each other, the basis weight of the first paper is formed higher than the second paper, the adhesive agent is applied to each paper Stage 1; A second end in which the first end and the second end of the second paper are aligned so as to be spaced apart from each other in correspondence with a predetermined coupling interval, and the first paper and the second paper are overlapped and overlapped to form a continuous paper in the longitudinal direction. step; And the second wrapper in a pair disposed in a vertical direction so as to surround the outer circumference of the first wrapper, and the overlapping wrapper in the longitudinal direction such that the width profile gradient of the surface increases in sequence along the transfer direction of the overlapping wrapper. Production of a base paper tube for tobacco comprising a third step of forming a base paper tube continuously connected to each other in the width direction both ends side of the overlapping winding is formed by being sequentially rounded by a multi-stage forming roll is pressurized by Provide a method.

In addition, the present invention is the first winding portion is formed round; And a second winding part which is overlapped to surround the outer circumference of the first winding part, wherein the basis weight of the first winding part is higher than the second winding part, and the second winding part is the first winding part. Arranged so as to surround the outer periphery of the branch, the first winding portion and the second winding portion in the width direction one end is aligned to be spaced apart so as to correspond to a predetermined coupling interval and face the first winding portion and the second winding portion Provided is a base paper tube for tobacco, characterized in that the coupling margins at both ends in the width direction of the overlapping roll bonded by the adhesive applied to the viewing surface are interconnected.

delete

Through the above solving means, the present invention provides the following effects.

First, since the overlapping rolls continuously supplied in the longitudinal direction are rounded to be connected to both ends in the width direction, the tube-shaped base paper tube can be continuously manufactured in the longitudinal direction without interruption of paper feeding, and the base paper tubes cut at predetermined intervals are cut. Through this, a hollow branch pipe filter may be provided to minimize the combustion heat transfer of the cigarette part to block the generation of harmful substances due to the heating of the acetate filter.

Second, since the overlapping roll passes through the forming rolls in multiple stages and is sequentially formed in the form of a circular tube in a flat state according to a gradual change of the pressing angle, each part of the circumference is maintained at a uniform hardness to improve roundness, and continuous feeding and forming It is possible to prevent tearing due to rapid change of shape, so that production delay or defect rate can be minimized, and the productivity and quality of the product can be improved.

Third, since both ends of each roll are connected by overlapping coupling between the steps through the coupling margin, not only the sealing property and the coupling safety of the joints of the paper pipe can be improved, but also the hardness and roundness of the paper pipe can be improved due to the basis weight difference between the paper rolls. Can be.

Fourth, unlike a plurality of seams are formed on the cut surface of the paper pipe manufactured by the conventional spiral winding method, the base paper pipe manufactured by connecting the coupling margins at both ends in the width direction of the overlapping winding is formed with one seam at the cut surface. Since the joints are firmly bonded by the overlap between the livers, high hardness can be maintained even when subdivided into lengths applicable to tobacco.

1 is a side view showing the manufacturing apparatus of the base paper pipe for tobacco according to an embodiment of the present invention.
Figure 2 is a front view showing the alignment coupling portion in the manufacturing apparatus of the base paper pipe for tobacco according to an embodiment of the present invention.
Figure 3 is a plan view showing a forming roll in the manufacturing apparatus of the base paper tube for tobacco according to an embodiment of the present invention.
Figure 4 is a cross-sectional view showing the overlapping roll in the manufacturing apparatus of the base paper pipe for tobacco according to an embodiment of the present invention.
Figure 5 is an exemplary view showing a molding process of the overlapping roll in the manufacturing apparatus of the base paper pipe for tobacco according to an embodiment of the present invention.
Figure 6 is a cross-sectional view showing a base paper pipe in the manufacturing apparatus of the base paper pipe for tobacco according to an embodiment of the present invention.
7 is a flow chart showing a manufacturing method of the base paper pipe for tobacco according to an embodiment of the present invention.
8 is a cross-sectional view showing a cigarette filter is applied according to an embodiment of the present invention.
9 is a cross-sectional view showing a VW cross section in FIG.

Hereinafter, with reference to the accompanying drawings will be described in detail a base paper tube for tobacco and a manufacturing method according to a preferred embodiment of the present invention.

1 is a side view showing the manufacturing apparatus of the base paper tube for tobacco according to an embodiment of the present invention, Figure 2 is a front view showing the alignment coupling portion in the manufacturing apparatus of the base paper tube for tobacco according to an embodiment of the present invention, 3 is a plan view showing a forming roll in the manufacturing apparatus of the base paper tube for tobacco according to an embodiment of the present invention, Figure 4 is a cross-sectional view showing the overlapping roll in the manufacturing apparatus of the base paper tube for tobacco according to an embodiment of the present invention. 5 is an exemplary view showing a molding process of overlapping rolls in the apparatus for manufacturing a base paper tube for tobacco according to an embodiment of the present invention, and FIG. 6 is an apparatus for manufacturing a base paper tube for tobacco according to an embodiment of the present invention. It is sectional drawing which shows base branch pipe.

As shown in Figures 1 to 6, the manufacturing apparatus 100 of the base paper tube for tobacco according to a preferred embodiment of the present invention includes a winding paper supply portion 10, a forming roll 20, and a cut portion (40).

Here, the winding paper supply unit 10 is provided at the front end of the manufacturing apparatus 100 so that the overlapping winding (d) is continuously supplied in the longitudinal direction, a pair of winding rolls (10a, 10b), gluing nozzle (10c), It may be provided including an alignment coupling portion (10d).

In detail, the overlapping roll (d) has a width corresponding to a predetermined reference width according to the diameter of the cigarette filter, and means a continuous winding paper in the longitudinal direction, and the reference width is set to the circumferential length of the outer diameter of the cigarette filter. Can be.

In addition, the overlapping wrapper (d) may be provided as a single wrapper, and one or more wrappers may be provided by overlapping coupling in the thickness direction. Explain.

In detail, the winding rolls 10a and 10b are wound with the first winding paper a and the second winding paper b in the longitudinal direction, respectively, and the winding rolls 10a and 10b are rotated in the longitudinal direction. It is preferably arranged at the front and rear of 10), respectively.

Here, the first paper (a) and the second paper (b) is provided in a continuous form in the longitudinal direction, but preferably provided with a paper material having a different basis weight.

In this case, the first wrapper (a) and the second wrapper (b) are provided to have a width corresponding to the reference width, the second wrapper (b) surrounding the outer circumference of the first wrapper (a) when molded in a circumferential form ) Is preferably provided to further include a predetermined margin.

That is, the second wrapper (b) is provided to have a width less than or equal to the reference width, and the first wrapper (a) is provided to have a width less than the reference width but less than the second wrapper (b). desirable.

In addition, the first and second winding sheets (a) and (b) drawn out from the take-up rolls 10a and 10b may be transferred to the alignment coupling portion 10d along the plurality of guide rollers 10f.

That is, the guide roller (10f) is provided in multiple stages along the path toward the front of the alignment coupling portion (10d) from the first winding roll (10a), the alignment coupling portion from the second winding roll (10b) It may be provided in multiple stages along the path toward the front of (10d).

In this case, the gluing nozzle 10c is disposed at the upper end of the front side of the second winding roll 10b on which the second winding b is wound, and the second winding roll 10c through the gluing nozzle 10c. An adhesive may be applied to the upper surface of the second wrapper (b) withdrawn from 10b).

Meanwhile, referring to FIGS. 1 and 2, the alignment coupling portion 10d may be provided with a pair of alignment rollers 11 and 12 disposed to face up and down.

In detail, the first wrapper (a) and the second wrapper (b) are drawn out and transported in the longitudinal direction along the guide roller (10f), and the first wrapper (a) on the upper surface of the second wrapper (b) ) Is overlapped by the space between the alignment rollers (11, 12) in a state where they overlap.

At this time, as the alignment rollers 11 and 12 are rotated, the first winding a and the second winding b are continuously drawn out from the respective winding rolls 10a and 10b, and the winding supply unit 10 is rotated. Can be transferred to the rear of the.

In addition, the first paper roll (a) and the second paper roll (b) passing through the alignment rollers 11 and 12 may be pressed in the vertical direction to be combined.

Here, the alignment coupling portion (10d) is rotated by the rotary drive means, the lower alignment roller 11 is formed with an alignment groove (11a) along the outer periphery, and the upper alignment roller is inserted into the alignment groove (11a) and rotated ( Preferably 12).

At this time, the width of the alignment groove (11a) is a predetermined combination of less than the width of the first winding (a) and the second winding (b) from the width of the first winding (a) or the second winding (b) It is preferred to have a size that includes the gap.

Here, referring to FIGS. 2 to 4, the widthwise end portion of the first winding (a) is disposed to be in close contact with the widthwise end portion of the alignment groove 11a, and the width direction rudder of the alignment groove 11a is disposed. The other end portion in the width direction of the second wrapper b is disposed to be in close contact with an end portion.

Accordingly, one end portion in the width direction of the first wrapper (a) and the second wrapper (b) may be aligned to be spaced apart from each other so as to correspond to the coupling gap, and may be pressurized in the vertical direction and overlapped with each other. .

Here, the interval between the alignment groove (11a) and the upper alignment roller 12 is preferably provided to correspond to the sum of the thickness of the first winding (a) and the second winding (b), the lower alignment roller ( It is preferable that the rotational direction of 11) and the formation direction of the alignment grooves 11a coincide with the longitudinal directions of the respective sheets of paper (a, b) to the conveying directions of the sheets of paper (a, b).

Accordingly, the first wrapper (a) and the second wrapper (b) may be continuously pulled out, aligned, and overlapped, and the overlapping wrapper (d) is continuously formed in the longitudinal direction so that the wrapper supply unit 10 Can be supplied to the rear of the. In other words, the overlapping paper (d) means a state in which the first paper (a) and the second paper (b) are combined.

In addition, a first coupling margin d1 is formed at a widthwise end of the overlapping wrapper d by a first wrapper a that protrudes from one widthwise end of the second wrapper to the widthwise side. Is formed.

In addition, the second coupling margin d2 is formed at the other end of the overlapping roll d by the second winding b which protrudes from the other end of the first winding a to the other side in the width direction. Is formed.

Meanwhile, referring to FIGS. 1 to 6, the forming rolls 20 are disposed at the rear of the sheet supplying unit 10, and are provided in pairs disposed to face each other in the vertical direction. Here, the forming roll 20 is preferably provided in a plurality of pairs arranged in a multi-stage along the direction in which the overlapping winding (d) is supplied and conveyed, that is, the longitudinal direction of the overlapping winding (d).

In detail, one forming roll 20 is preferably provided with a lower forming roller 21 and an upper forming roller disposed in the vertical direction, the overlapping winding (d) is the lower forming roller 21 and It can be pressurized and conveyed between the upper forming rollers.

Here, the lower forming roller 21 may be integrally rotated with the lower alignment roller 11. That is, the pulley 23 provided on one side of the lower forming roller 21 and the pulley 13 provided on one side of the lower alignment roller 11 may be connected integrally by a tension belt or the like.

In addition, a molding groove 21a is recessed in a radially inward direction on the surface of the lower molding roller 21, and the upper molding roller is inserted into the molding groove 21a.

In this case, the upper forming roller means a member for closely contacting the overlapping winding d to the surface of the forming groove 21a, and a roller member having a surface shape corresponding to the widthwise profile of the surface of the forming groove 21a. Or may be provided as a bar member.

Here, the overlapping winding d is rounded along the widthwise profile of the surface opposed between the lower forming roller 21 and the upper forming roller. That is, the overlapping roll d may be pressed between the lower forming roller 21 and the upper forming roller so as to correspond to the surface shape of the forming groove 21a.

At this time, the distance between the opposite surface between the lower forming roller 21 and the upper forming roller is preferably provided less than the sum of the thickness of the first winding (a) and the second winding (b), overlapping winding (d ) Can be pressed between the rollers and formed accurately.

In addition, the overlapping rolls d passing through the forming roll 20 may be rounded, and both ends of the overlapping rolls d in the width direction may be connected to each other to form a base paper tube e. That is, the base paper pipe (e) means a state in which both ends of the width direction of the overlapping paper (d) are connected to each other.

At this time, as the overlapping winding (d) is conveyed in the longitudinal direction by the forming roll 20 and rounded in the width direction, the base paper pipe (e) may be formed continuously.

Here, it is preferable that the rotational direction of the lower forming roll 21 and the forming direction of the forming groove 21a coincide with the longitudinal direction which is the conveying or feeding direction of the overlapping winding d.

Accordingly, unlike conventional spiral winding or longitudinal rotation paper tube manufacturing method, since the base paper tube (e) can be continuously manufactured in the longitudinal direction without interruption of the overlapping winding (d) supplied, the productivity of the product is significantly improved. Can be.

On the other hand, referring to Figures 3 to 5, the forming roll 20 is preferably arranged in multiple stages along the conveying direction of the overlapping winding (d).

That is, one forming roll 20 is provided in a pair facing in the vertical direction, a plurality of pairs of forming rolls (20a, 20b, 20c, 20d, 20e, 20f) in multiple stages along the conveying direction of the overlapping winding (d) 20g) is disposed.

At this time, the multi-stage forming roll 20 has a gradient of the width profile with respect to the surface, that is, the surface of each forming groove portion (21a, 21b, 21c, 21d, 21e, 21f, 21g) is the overlapping winding (d) It is preferably provided to increase toward the rear of the conveying direction of.

Here, the gradient is a concept similar to the curvature, the closer to the plane, the lower the gradient, and the closer to the circumference, it is preferable to understand that the higher the gradient.

In detail, the molding groove 21a of the front side forming roll 20a adjacent to the alignment coupling portion 10d is provided in a form close to a plane (low gradient), and is formed at a position far from the alignment coupling portion 10d. The roll 20g is formed with a forming groove 21g having a widthwise profile close to a circle (high gradient).

In detail, the forming groove 21a of the foremost first forming roll 20a is provided in a form in which both ends in the width direction are inclined upward at a predetermined angle, and the overlapping winding d passing through the first forming roll 20a is Both ends of the width direction are molded into an upwardly inclined shape.

In addition, the forming grooves 21b of the second forming rolls 20b behind the first forming rolls 20a are provided with both ends of the width direction in an upward gradient shape, and overlapping rolls having passed through the second forming rolls 20b. (d) is formed at both ends in the width direction in the form of an upward gradient.

In addition, the forming grooves 21c of the third forming roll 20c behind the second forming roll 20b are provided in a form in which both ends of the width direction are upwardly gradient, and the center portion is bent downward at a predetermined angle.

In addition, the forming grooves 21d of the fourth forming rolls 20d behind the third forming rolls 20c are provided in a form in which both ends of the width direction are sloped upward, and the center portion is recessed roundly.

In addition, as the fifth forming roll 20e, the sixth forming roll 20f, and the seventh forming roll 20g, the recessed depth of the center portion thereof is sequentially increased, but the width between both ends thereof is sequentially narrowed. The forming groove 21g having a widthwise profile close to the circumference is formed in the roll 20g.

In this case, the overlapping roll (d) passes through each forming roll, and each part in the width direction such as both ends and the center is sequentially rounded, and may be gradually formed into a columnar shape in a flat form.

As such, the overlapping roll (d) passes through the multi-stage forming roll 20 and is formed in a round tube shape in a flat form according to a gradual change in the pressing angle, so that uniform hardness is maintained in each part of the circumference and precisely formed with high roundness. Can be.

Furthermore, since a buffer region is formed between the overlapping rolls d supplied in a flat shape and the base paper tubes e formed in a circumferential shape through a plurality of forming rolls 20, continuous feeding and molding are possible, but a sudden shape change is possible. The tearing due to can be prevented.

Accordingly, the production delay due to the tearing of the overlapping wrapper (d) and the defective rate due to the low roundness can be minimized, thereby improving the productivity and quality of the product.

In addition, since the overlapping winding (d) is formed by an overlapping combination of a pair of windings (a, b) having different basis weights, the hardness of the base paper pipe (e) may be increased, and the base paper pipe due to the difference in hardness between the inner and outer paper rolls. The roundness of (e) can be further improved.

That is, as the second hard paper b is superimposed on the outer circumference of the first hard paper 1 a, the second paper b is radially outward due to the hardness difference between the two papers a and b. A high quality base paper tube (e) pressurized to flatten the outer and inner circumferences may be manufactured.

On the other hand, when the overlapping roll (d) is molded round through the forming roll 20, the coupling margins (d1, d2) provided at both ends in the width direction of the overlapping roll (d) overlap each other and the base Branch pipe (e) may be formed.

That is, the second coupling margin d2 protruding stepwise from the other end of the overlapping d to the upper surface of the first coupling margin d1 protruding stepwise from one end of the overlapping roll d. Are overlapped and both ends of the overlapping winding d may be interconnected.

As such, both ends of the base supporting pipe (e) may be firmly coupled through overlapping coupling between steps, and the sealing property of the seam portion of the base supporting pipe (e) may be improved.

In addition, the cutting portion 40 is disposed behind the forming roll 20, and cuts the formed base paper pipe (e) at a predetermined interval, the base paper pipe (e) is cut can be produced a paper pipe filter have.

At this time, the branch pipe filter is disposed between the cigarette portion and the base material of the acetate material can reduce the heat transfer toward the base filter during the combustion of the cigarette portion, and provides an effect of minimizing the generation of harmful substances due to the heating of the base filter.

Here, the interval at which the base paper pipe (e) is cut is preferably set to a size that can be applied to one cigarette, but may also be set differently according to individual cigarette manufacturers' needs.

In this case, since the base paper pipe (e) is formed by connecting both ends of the overlapping winding (d) in the width direction, one seam is formed on the cut surface from which the base paper pipe (e) is cut.

That is, a plurality of seams are formed on the cut surface of the branch pipe manufactured by the conventional spiral winding method in a slanted manner, and one seam is formed on the cut surface of the branch pipe filter.

Moreover, since the joint portion of the branch pipe filter is firmly coupled through the step-by-step overlap by the coupling margins d1 and d2, high hardness may be maintained even when subdivided into a length applicable to cigarettes.

In addition, a third winding (c) coated with an adhesive to cover the coupling margins (d1, d2) between the forming roll (20) and the cutting portion (40) in the longitudinal direction on the outer circumference of the base paper pipe (e). It is preferable that the winding portion 50 is provided to supply.

In detail, the winding unit 50 may include an adhesive on one surface of the third winding roll 50a on which the third winding c is wound and the third winding paper c drawn out from the third winding roll 50a. It is preferable to include a gluing nozzle 50b to be coated and an entry unit 50c for tightly supplying the third winding paper c to the outer circumference of the base paper pipe e.

At this time, the third winding (c) has a predetermined reference width to correspond to the diameter of the branch pipe filter, provided with a continuous paper material in the longitudinal direction, is wound in the longitudinal direction on the third winding roll (50a). .

That is, the third paper (c) is further provided with a predetermined margin from the width of the first paper (a) or the second paper (b), so as to surround the outer periphery of the base paper pipe (e) Can be combined.

In this case, a hollow molding hole is provided in the entry unit 50c. That is, when the base paper tube (e) discharged from the forming roll 20 is inserted into the forming roll in the state that the third winding (c) is disposed along the inner circumference of the forming hole, the outer circumference of the base paper tube (e) According to the third winding (c) can be added and transported.

Here, the third winding (c) is preferably provided with a paper material of the basis weight lower than the first winding (a) and the second winding (b).

As such, as the third winding (c) is attached to the outer circumference of the base paper pipe (e), the hardness of the base paper pipe (e) may be increased, and the joint portion between the coupling margins (d1, d2) is further increased. It can be sealed stably.

At this time, it is more preferable that the finishing unit 30 is provided at the rear of the entry unit 50c. In detail, the finishing portion 30 preferably includes a forming mold 30a having an inner diameter corresponding to the outer diameter of the branch pipe filter and a heating chamber 30b for heating the base branch pipe e to cure the adhesive. .

That is, the base paper pipe (e) discharged from the forming roll 20 is inserted into the forming mold (30a) in the state that the third winding (c) is padded. At this time, the base paper tube (e) may be in close contact with the inner circumference of the forming mold (30a) and the shape may be aligned in the form of a precise circular tube.

In addition, the heating chamber 30b has an inner diameter corresponding to the outer diameter of the base branch pipe e similarly to the forming mold 30a, and may be heated to a predetermined temperature.

Here, the adhesive is provided with a thermosetting, the base paper pipe (e) introduced into the heating chamber (30b) can be fixed in shape according to the curing of the adhesive in a state aligned in the form of a circular tube.

At this time, the base branch pipe (e) may be transported to the cutting unit 40 in the closed state through the finishing portion 30 to be cut.

On the other hand, it is preferable that the filter discharge unit 60 is provided at the rear of the cutting unit 40. Here, the filter discharge unit 60 may include a pickup drum 60a, a reject air gun 60b, a vision camera 60c, a determination device 60d, and a receiving unit 60e.

In detail, a plurality of pickup grooves are formed on the outer circumference of the pickup drum 60a to pick up the cut branch pipe filters, and the cut branch pipe filters are picked up and rotated one by one through the pickup grooves.

At this time, one side of the pickup groove is provided with a vision camera 60c for capturing the cross-sectional image of the branch pipe filter, the cross-sectional image captured by the vision camera 60c is transmitted to the discriminating device (60d). .

Here, the determination device 60d may determine the defective state by measuring the position of the hollow part of the branch pipe filter from the picked-up cross-sectional image.

Then, the reject air gun 60b is operated according to the determination result of the discriminating device 60d so that the defective branch pipe filter is discharged to the outside of the pick-up groove, and the reject air gun 60b is discharged by the reject air gun 60b. Branch pipe filter may be collected in the receiving portion (60e).

Accordingly, whether or not the manufactured branch pipe filter is automatically determined, and a defective branch pipe filter is automatically removed, thereby minimizing additional inspection processes or manpower consumption, thereby significantly improving product productivity.

On the other hand, Figure 7 is a flow chart showing a method of manufacturing a filter for cigarettes according to an embodiment of the present invention.

As shown in Figure 7, the manufacturing method of the filter for tobacco consists of the following process.

First, referring to FIGS. 1 to 7, the first winding (a) and the second winding (b) are drawn out in the longitudinal direction from each of the take-up rolls 10a and 10b, respectively. Adhesive is applied to one side of the opposite surface of (s10).

That is, the first wrapper (a) and the second wrapper (b) are disposed to face in the up-down direction, and the lower surface or the second portion of the first wrapper (a), which is a face facing each other when the wrappers (a) are disposed to face each other. It is preferable that the adhesive is applied to one surface of the upper surface portion of the wrapping paper (b).

In this case, it is preferable that the first paper (a) and the second paper (b) are selected to have different basis weights to increase the hardness of the overlapping paper (d), and the basis weight of the first paper (a) is It is preferably selected to be higher than the second paper (b).

In addition, the first wrapper (a) and the second wrapper (b) are selected so that one has a predetermined width to surround the other, each has a width less than the predetermined reference width according to the diameter of the branch pipe filter This is preferable.

That is, the second wrapper (b) is provided to have a width less than or equal to the reference width, and the first wrapper (a) is provided to have a width less than the reference width but less than the second wrapper (b). desirable.

In addition, the first wrapper (a) and the second wrapper (b) are overlapped to each other so that the overlapping wrapper (d) is continuously formed in the longitudinal direction (S20).

In detail, the first wrapper (a) and the second wrapper (b) are aligned such that one end of the width direction is spaced apart from each other at a predetermined coupling interval. Then, when the opposing surfaces of the aligned first winding (a) and the second winding (b) are pressed in a vertical direction, the first winding (a) and the second winding (b) are combined to overlap the winding roll. (d) is formed.

At this time, at both ends of the overlapping winding (d), non-overlapping coupling margins (d1, d2) are formed to correspond to the coupling interval.

In addition, the overlapping rolls d are formed in the longitudinal direction by the forming rolls 20 arranged in a pair arranged in the vertical direction so as to sequentially increase the width profile gradient of the surface along the conveying direction of the overlapping rolls. It is pressurized and transported to be sequentially rounded (s30).

In addition, the coupling margins d1 and d2 of both widthwise end ends of the overlapping winding d may be connected to each other so that the base paper pipe e may be continuously formed.

As such, the overlapping roll (d) passes through the multi-stage forming roll 20 and is formed into a round tube shape in a flat form according to a gradual change in the pressing angle, so that uniform hardness is maintained at each circumference of the base paper tube (e). ) Can be molded accurately to have a high roundness.

Furthermore, since a buffer region is formed between the overlapping rolls d supplied in a flat shape and the base paper tube e formed in a circumferential shape through a plurality of forming rolls 20, the overlapping rolls are not torn due to a sudden shape change. ) Supply and molding process can be performed continuously, and the defect rate due to the low roundness or the production delay due to the tearing of the overlapping winding (d) can be minimized to improve the productivity and quality of the product.

At this time, when the coupling margins d1 and d2 of both ends of the overlapping roll overlap each other, the third winding c may be added along the outer surface of the combined coupling margins d1 and d2.

In detail, the third wrapper (c) is preferably selected to have a lower basis weight than the second wrapper (b). In this case, the third paper (c) is selected to have a predetermined reference width according to the diameter of the branch pipe filter, the second paper (b) has a width less than the third paper (c), the first The wrapping paper (a) is preferably provided to have a width less than the second wrapping paper (b).

As such, since the overlapping winding (d) is formed by overlapping coupling of a pair of windings (a, b) having different basis weights, the hardness of the base paper pipe (e) can be increased, and the base paper pipe due to the hardness difference between the internal and external paper rolls. The roundness of (e) can be further improved.

In addition, both ends of the base branch pipe (e) are connected in accordance with the overlap of the pair of coupling margins (d1, d2), the connecting portion between the coupling margins (d1, d2) is padded by a third winding. Accordingly, the hardness of the base paper pipe (e) is increased, the sealing property in the radial direction from the inner hollow of the base paper pipe (e) can be significantly improved.

Finally, the base branch pipe (e) is finished by the finishing unit 30, the finished base branch pipe (e) is cut at a predetermined interval is produced a branch pipe filter (s40).

As such, unlike a plurality of seams formed on the cut surface of the paper pipe manufactured by the conventional spiral winding method, the base paper pipe (e) manufactured by connecting both ends in the width direction of the overlapping winding (d) has one seam on the cut surface. Is formed, but the joint portion is firmly coupled by the overlap between the step through the coupling margin (d1, d2) can be maintained in high hardness while being subdivided into the length applicable to the cigarette.

On the other hand, Figure 8 is a cross-sectional view showing a cigarette applied tobacco filter according to an embodiment of the present invention, Figure 9 is a cross-sectional view showing a V-W cross-sectional view of FIG.

As shown in FIGS. 8 to 9, the cigarette filter 200 includes a branch pipe filter 220, a base filter 230, and a tip paper 240.

Here, the branch pipe filter 220 preferably includes a first winding unit 220a and a second winding unit 220b. In detail, the first winding unit 220a refers to an inner circumferential side of the branch pipe filter 220 formed by the first winding (a), and the second winding unit 220b is formed by the second winding (b). It is preferable to understand that it means the outer circumferential side of the branch pipe filter 220.

On the other hand, the first winding portion 220a may be formed as the both ends of the width direction of the first winding (a) is formed to be round to form a hollow 221 therein. At this time, the first winding (a) is preferably provided with a paper material of the first basis weight.

The second winding unit 220b may be formed to surround the outer circumference of the first winding unit 220a by a second winding unit b provided with a paper material having a second basis weight different from the first basis weight. Can be. Here, the second basis weight is preferably provided in less than the first basis weight.

Accordingly, the second winding portion 220b provided with a relatively low hardness overlaps the outer edge of the first winding portion 220a provided with a relatively high hardness, and the circumference is caused by the difference in hardness between the winding portions 220a and 220b. The shape may be kept uniform, and the overall hardness of the branch pipe filter 220 may be improved.

At this time, the second wrapper 220b is overlapped and coupled so that the second wrapper b surrounds the outer circumference of the first wrapper 220a, and both ends of the second wrapper b are connected to each other in the width direction. Can be formed according to.

Here, both end portions in the circumferential direction of the second winding portion 220b are connected to each other at positions spaced at predetermined coupling intervals as connecting portions between the end portions in the circumferential direction of the first winding portion 220a.

In detail, the first wrapper (a) and the second wrapper (b) are overlapped and coupled in a state in which one end of each width direction is aligned to be spaced apart from each other at a predetermined coupling interval.

That is, the first coupling margin d1 corresponding to the widthwise one end of the first wrapper a protruding to one side from the widthwise one end of the second wrapper b and the first wrapper a The second coupling margin d2 corresponding to the other end portion in the width direction of the second wrapper b protruding from the other end portion in the width direction to the other side in the width direction may overlap each other.

Accordingly, the connecting portion d3 between the both ends of the circumferential direction of the first winding unit 220a and the connecting portion d4 between the circumferential both ends of the second winding unit 220b may be alternately disposed. The sealing property from the hollow 221 of the filter 220 toward the radial direction can be significantly improved.

Moreover, unlike the conventional winding of the wound paper in helical times a plurality of times, a paper tube of sufficient hardness can be produced by simply winding the two-fold winding paper provided in different basis weights in the width direction and connecting both ends thereof.

Along with this, one seam is formed on the cut surface of the front and rear ends of the produced paper pipe, and the seam is overlapped by a step formed by the coupling margins d1 and d2. 220) can maintain a high hardness.

Of course, the outer circumference of the branch pipe filter 220 may be coupled to the third winding paper to further form a third winding paper.

Then, the branch filter 220 is coupled to the rear end of the cigarette portion 210 is filled with tobacco, the base filter 230 is after the branch filter 220 to be spaced apart from the cigarette portion 210 Connected to the end.

Here, the base filter 230 may be variously provided as an acetate filter formed by agglomeration of acetate tow, a hollow filter having a hollow inside the acetate filter, a capsule filter with a fragrance capsule, and the like. It is preferable to understand that a plurality of them includes a composite filter connected in the longitudinal direction.

In addition, the tip paper 240 is wrapped around the outer circumference of the branch filter 220 and the base filter 230 and fixed to the rear end of the cigarette part 210.

At this time, the tip paper 240 is provided with a thin paper material having a plurality of pores, so as to integrally surround the outer periphery of the rear end of the cigarette portion 210, the branch pipe filter 220 and the base filter 230. Combined.

As such, since the hollow tube filter 220 is disposed between the cigarette unit 210 and the base filter 230, the combustion heat of the cigarette unit 210 is blocked from being directly transmitted to the base filter 230. Thus, generation of harmful substances due to heating and combustion of the base filter 230 may be blocked.

As described above, the present invention is not limited to the above-described embodiments, but may be modified and implemented by those skilled in the art without departing from the scope of the claims of the present invention. Such modifications are within the scope of the present invention.

100: cigarette filter manufacturing apparatus 10: roll paper supply unit
20: forming roll 30: finishing portion
40: cutting portion 50: winding roll portion
60: filter outlet

Claims (3)

A first step in which the first and second papers are drawn to face each other, the basis weight of the first paper being higher than the second paper, and an adhesive applied to each of the papers;
A second end in which the first end and the second end of the second paper are aligned so as to be spaced apart from each other in correspondence with a predetermined coupling interval, and the first paper and the second paper are overlapped and overlapped to form a continuous paper in the longitudinal direction. step; And
The second wrapper is formed in a pair disposed in the vertical direction to surround the outer periphery of the first wrapper, but the overlapping wrapper in the longitudinal direction so that the width profile profile ratio of the surface in the conveying direction of the overlapping wrapper sequentially increases. The method of manufacturing a base paper tube for tobacco comprising a third step of forming a base paper tube continuously by forming a base paper tube connected to each other in the widthwise direction of both end portions of the overlapping roll according to pressure transfer and being rounded sequentially by a multi-stage forming roll. . A first winding portion formed roundly; And
It includes a second winding portion that is coupled to overlap to surround the outer circumference of the first winding portion,
The basis weight of the first winding is formed higher than the second winding,
The second winding portion is disposed to surround the outer circumference of the first winding portion, and the first winding portion and the widthwise one end of the second winding portion are aligned to be spaced apart from each other so as to correspond to a predetermined coupling interval, and the first A base paper tube for tobacco, characterized in that the coupling margin portions of both ends of the overlapping wrapper joined by the adhesive applied to the opposite surface of the wrapper and the second wrapper are interconnected. delete

Images