KR850000263B1 - Method of producing for the paper-filter - Google Patents

Abstract

A production device for cellulose paper filters for cigarettes comprises a sprayer (3), groove rollers (4,4'), a dryer (6), compression rollers (7,7') and a cone (12). A cellulose paper strip (1), which passes through the sprayer has a water content of 25%. Folds are formed on the strip by the groove rollers. The strip is dried and passed into the cone to prepare a filter rod. The filter rod (13) is packed and cut.

Description

Manufacturing method of cigarette paper filter using cellulose paper

1 is a perspective view of the manufacturing apparatus of the filter according to the present invention.

2 is a cross-sectional view of the uneven groove forming state of the paper-strip according to the present invention.

3 is a perspective view of a state immediately after forming the uneven groove of the paper-strip according to the present invention.

4 is a cross-sectional view of the paper-strip compression process in accordance with the present invention.

5 is a longitudinal sectional view of the finished paper filter according to the present invention.

* Explanation of symbols for main parts of the drawings

1: paper-strip 2: strip feed reel

3: atomizer 4,4 ': grooved roller

5: cilia 6: dryer

7.7 ': Compression tow 8: Wrapping reel

9: wrapping paper 10: guide roller

11: Belt 12: Coan

13: filter rod 14: full knife

15: cutter 16: loader

The present invention relates to a method for producing a cigarette paper filter using tobacco paper and cellulose paper which is excellent in filtration and a process related thereto. In the field of filter manufacturing, various and numerous proposals have been made for the effective filtration of tobacco smoke, but they do not solve the problems that make it possible to produce mass production at low cost without excessively increasing the smoking resistance of tobacco smoke and reducing the content of unnecessary particles. I couldn't.

Therefore, in the present invention, it is possible to easily switch between a new production method and an improved filter rod that can effectively remove unnecessary particles and continuously mass-produce excellent cigarette filters without increasing smoking resistance to the flow of tobacco smoke. To provide a method and process for producing a cigarette paper filter made from a modified cellulose strip, the filter rod is made by partially tearing the paper strip to elevate the cilia and coalescing the strips, but the minute tearing causes the paper to return to the groove. It is preferable to form together with the grooves and grooves of the entire strip in the longitudinal direction to the length by passing therebetween, and the filter rod can be obtained by compressing and compressing the longitudinal grooved paper in order to obtain a filter having an effective filtering effect. Therefore, by forming a groove in the cellulose paper, and then through a controllable compression step, the grooved and compressed cellulose paper can be obtained with a filter rod having a high manure effect and good intention. The explanation is as follows.

According to the present invention, the cellulose paper strip (1) is supplied from the strip supply reel (2) and is supplied with sufficient moisture by the upper sprayer (3). The strip (1) engaging the groove rollers (4) and (4 ') with numerous circumferential grooves in the circumferential direction to be parallel to and parallel to (1) results in discontinuous tears in the longitudinal direction and prevents shrinkage in the longitudinal direction. And the uneven groove in the transverse direction is formed and at the same time the cilia 5 are raised. The strip (1) containing sufficient moisture and then grooved is rotated by being arranged up and down like the groove rollers (4) and (4 ') after the excess is removed except the appropriate amount of water while passing through the dryer (6). The endless belt is compressed by a predetermined interval while passing between the smooth compression rollers (7) (7 ') and rotated by three guide rollers (10) together with the wrapping paper (9) supplied from the wrapping paper supply reel (8) With the guidance of (11), the strip (1) enters the known cone (12) and gathers in the width direction and receives a compression force in the circumferential direction to form a continuous cylindrical compressed filter rod (13) and around it. The tip of the wrapping paper 9 is packed and moved by the full knife 14 so that the filter rod 13 is cut into a predetermined length by the cutter 15 and the finished filter rod 13 is loaded on the stacker 16. . Reference numeral 17 is a groove, and 18 is a ring.

The cellulose strip material used to obtain a filter with the desired effect using the device according to the invention should comprise at least about 85% of α-cellulose and consist of paper made from kraft wood pulp of highly bleached pines, Prior to formation into the filter, the paper should be pounded to a smooth and highly absorbent weight, weighing about 30-35 grams per square meter, typically 15-50 grams per square meter, preferably with melamine -Wet strength resins, such as formaldehyde resins or urea-formaldehyde resins, should contain about 0.25-3% by weight. The use of strips of lightly beaten pulp in this way is because such papers are soft and have high adsorptive power, and because the general fibers are not fine fibers, they are more uniform in form and rigidity than papers made in the present invention. The cilia on the surface of the lichen are less likely to be raised.

The strip (1) past the sprayer (3) should contain about 10-55% moisture, but preferably about 25% is optimal, in which the strip (1) is not excessively torn or fragmented and has no deep unevenness. A groove can be formed, and the uneven groove is formed between an upper groove roller 4 'having a groove depth of about 7.6 mm and a width of 0.5 mm in FIG. 1 and a lower groove roller 4 having a width of 0.25 mm. While passing through it is formed in the same state as the second degree.

The base of the groove 17 and the outer surface of the ring 18 are rounded or another suitable curved surface and the side wall of the groove 17 is at a right angle so that cutting does not occur during forming of the uneven groove. Since the interval between the upper and lower grooved rollers 4 and 4 'can be adjusted, the depth of the defect can be adjusted by a desired depth. The strips (1) passing through the grooved rollers (4) and (4 ') are irregularly torn at the corners as shown in Fig. 3, the cilia are raised, and 30-50 pieces per 30 mm to obtain a high performance filter. The grooves should be provided but preferably 35-40 pieces and the depth of the grooves should be 0.03-0.05mm.

After the above process, the strip 1 evaporates moisture to an appropriate level of humidity (typically atmospheric humidity) while passing through the dryer 6, and then compresses the rollers 7 and 7 'arranged up and down at appropriate intervals. By going through the compression of the uneven height of the uneven groove formed strip (1) by making the state of FIG. 3 to the state of FIG. 4 to increase the density and the length of both sides is increased, the raised cilia have a large contact ratio with air To increase the manure effect. That is, while providing a high degree of ventilation for the longitudinal smoke passage, even if the filter length is short, it removes 50-60% of the contents contained in the cigarette smoke. The filter rod according to the present invention has a robustness that can be easily cut and handled by a high speed automatic machine, which is an essential element in mass production as it is today and is desirable for smoking resistance without using a large amount of filter material. High filter effect can be achieved within the range. In addition, the longitudinal section of the filter tip according to the present invention is characterized by having a uniform shape and generally does not have a large hole as visible to people.

The strips (1) having the proper depth are increased to four to eight times the original paper thickness and pass through the compression rollers (7) and (7 '), thus providing 30-65% of the grooved thickness. The thickness will be reduced. As described above, the uneven groove is formed and recompressed, and the strip 1 merges the strip 1 into a rod having a uniform shape by a cone 12, and its longitudinal section has a hole having a shape like a snow. It has a uniform density on the whole cross section. The size of the tobacco smoke passage formed by the coalesced strips with the neighboring compression recesses and grooves is as shown in FIG. 5, and the maximum width ranges from 0.25 mm to 0.60 mm. It will fill this passageway. The final thickness of the strip has a final thickness in the range of about 20-80% of the thickness of the uneven groove formed, and within a certain low pressure range, the degradation of the lateral displacement of the filter rod is very large and the degree of compression is very high. When higher, the properties are reduced so that the softness of the strip is undesirably large or it can be removed by using the first pepper strip 1 in a wider manner.

The paper strip (1) in which the uneven groove is formed and compressed according to the present invention accommodates about 1% of melamine formaldehyde or another wet strength resin as mentioned above. Stepwise work can be performed in the form of pleats and filter rods, and the filter rods or filter tips made of these papers are ridged with uniformly dispersed fine cilia on both sides of the strip, resulting in improved shape and performance. It is constant and shows an excellent filter effect.

Claims (5)

The strip (1) supplied from the strip feed reel (2) wound with cellulose paper strip (1) is humidified by the sprayer (3), and the uneven wrinkles and cilia in the directions are caused by the upper and lower groove rollers (4, 4 '). The packing paper which is compressed at regular intervals by forming the bumps and cuttings of the mold and passing through the dryer 6 and passing through the compression rollers 7 and 7 'arranged up and down. (9) with the guide belt (10) rotated by the endless belt (1) is guided into the cone 12, the strips are gathered and receives a compressive force in the circumferential direction of the continuous cylindrical compressed filter The filter 13, which is formed as a rod 13 and the tip of the wrapping paper 9 is glued by a pull knife around the compressed filter rod, is packed and moved, and the filter cut to a certain length by the cutter 15 is hit by the loader 16. Manufacture of Citrus Paper Filter Using Cellulose Paper Way. The filter of claim 1, wherein the filter is a paper strip having an average length of about 1.25 mm and a tip protruding on average about 0.25 mm. The filter of claim 1, wherein the filter has a groove thickness of about 0.3-0.5 mm and a compression of about 20-80% of the grooved thickness. 2. The groove forming apparatus according to claim 1, wherein an upper groove roller (4 ') having a groove depth of about 7.6 mm and a width of about 0.5 mm and a lower groove roller having a width of about 0.25 mm. The humidifier according to claim 1, which contains about 25% water by passing through a sprayer (3) installed above the strip.

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