KR20150119722A - Filter wrapping paper of a cigarette filter and the coating method thereof - Google Patents

Abstract

The present invention relates to a filter wrapping paper of a cigarette filter, and a coating method thereof. The filter wrapping paper of the present invention prevents a cellulose-based film, coated on the filter wrapping paper, from being rolled up due to absorption of moisture, and also enhances a degree of moisture adsorption and tactility when smoking. Moreover, the filter wrapping paper prevents the filter from being attached onto a mouth when smoking in dry weather.

Description

TECHNICAL FIELD [0001] The present invention relates to a filter paper for a cigarette filter,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter paper and a coating method of a cigarette filter.

As is generally known, it is known that the smoke produced during the smoking process contains substances that affect the human body, including tar and nicotine. Therefore, it is important to remove the components that affect the human body contained in the smoke, and the filter is attached to the cigarette.

The cigarette usually includes largely nodules and a filter portion, of which the adsorbent is pulverized appropriately and charged into an acetate filter to produce a final filter product.

In the case of conventional tobacco products, as the consumer opens the cigarette pack, the remaining cigarettes are exposed to the outside air, and the moisture and fragrance of the cigarette may be lost over time. Changes in the moisture and fragrance components of tobacco during storage for a long period of time in the unopened state can cause changes in the taste of the original tobacco, and may also lead to offensive odor.

On the other hand, in the case of a filter, for example, in the case of a recess filter, there is a problem that a filter is distorted before and after smoking. That is, when the smell of the smoker is put on the filter during smoking, the filter is distorted. This phenomenon lowers the smile satisfaction of the smoker.

Therefore, it is urgent to develop a cigarette filter having a new structure of filter paper to improve the smokers' smoking satisfaction.

An object of the present invention is to provide a coating method using a film on the outside of a tobacco filter filter wrapper.

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention, claims and drawings.

Various embodiments described herein are described with reference to the drawings. In the following description, for purposes of complete understanding of the present invention, various specific details are set forth, such as specific forms, compositions, and processes, and the like. However, certain embodiments may be practiced without one or more of these specific details, or with other known methods and forms. In other instances, well-known processes and techniques of manufacture are not described in any detail, in order not to unnecessarily obscure the present invention. Reference throughout this specification to "one embodiment" or "embodiment" means that a particular feature, form, composition, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Accordingly, the appearances of the phrase " in one embodiment "or" the embodiment "in various places throughout this specification are not necessarily indicative of the same embodiment of the invention. In addition, a particular feature, form, composition, or characteristic may be combined in any suitable manner in one or more embodiments.

In one embodiment of the present invention, there is provided a method comprising: coating on a filter paper with a cellulose-based film using an adhesive; Drying the coated filter paper at a flow rate of 10 m / sec to 20 m / sec by 15 ° C to 25 ° C hot air; Secondary drying the primary dried material at 30 to 40 占 폚 with hot air at 10 m / sec to 20 m / sec; Passing the rotating roll while supplying water to the secondary dried product; Drying the secondary dried material passing through the rolls at 30 to 35 占 폚 with hot air at 10 m / sec to 20 m / sec; And fourtharily drying the tertiary dried material at 10 to 20 m / sec with hot air at 35 to 45 ° C. In this embodiment, the cellulose-based film provides a method of film-coating a cigarette filter wrapper, which is a cellulose acetate film, and further comprising passing the rotating roll at 40 ° C to 50 ° C after the fourth drying, Wherein the adhesive provides a film coating of a cigarette filter wrapper comprising 50% to 60% moisture by weight, wherein the wind velocity during the first and third drying is 13 m / sec To 18 m / sec. The method of film-coating the cigarette filter wrapper with a roll having fine holes having a size of 1 to 1.5 μm And the primary and tertiary drying provide a film coating method of a cigarette filter wrapper which is performed for 20 to 30 hours.

The filter paper wrapper is a thin paper which keeps the shape of the filter and adheres to the tip paper during the manufacture of the filter, and the quality of the filter paper depends on the porosity, tensile strength, elongation, It is different.

In one embodiment, the film used in the step of applying the film using an adhesive on the filter paper is a cellulose acetate film, but is not limited thereto.

The adhesive is a material used to bond two objects to each other, and does not fall off when solidified later in the liquid phase, and does not break itself.

In one embodiment, the wind drying at room temperature means that it should not be dried by heat, and the normal temperature means 15 - 25 ° C, and the wind speed is about 10 m / sec to 20 m / sec But is not limited thereto.

In one embodiment, drying at a temperature of 15 ° C to 25 ° C for 24 hours to adhere the film to the filter paper web is performed by drying with strong wind at room temperature. In the step of drying at 15 캜 to 25 캜, this does not mean drying by wind or drying by heat.

In one embodiment, water is provided through rotation of the roll toward the filter paper web. The above rolls are characterized by having fine holes, and the size of the fine holes is 1 mu m to 1.5 mu m, but is not limited thereto. This means that the roll is contained in semi-distilled water, and when the filter wrapping paper passes through the roll part not contained in the distilled water, water is provided to the filter wrapping paper side by the rotation of the roll.

In one embodiment, the step of drying by hot air is included. The hot air means hot air of about 30 ° C to 35 ° C, but is not limited thereto. It means that the filter paper wrapped with moisture is dried through the drying by the hot air.

In one embodiment, the filter wrapper is provided in a roll form for 24 hours at a temperature of 40 DEG C to wrap the outside of the filter to provide a filter wrapper coated by a film to wrap the outside of the filter do.

The method for coating a filter wrapper of a cigarette filter according to the present invention is a method for coating a filter wrapper to prevent curling due to moisture absorption, improve the degree of moisture adsorption, increase the degree of touch during smoking, It is possible to prevent the filter from adhering to the mouth at the time of smoking, and it is possible to improve the satisfaction of smoking of the consumer.

Hereinafter, the present invention will be described in more detail with reference to Examples. It will be apparent to those skilled in the art that these embodiments are only for describing the present invention in more detail and that the scope of the present invention is not limited by these embodiments in accordance with the gist of the present invention .

[Example 1]

How to film coating of cigarette filter wrapper

Manufacturing example  One

A cellulose acetate film was coated on the filter paper using an aqueous adhesive having a moisture content of 50% by weight to 60% by weight, the coated filter paper was rotated at a speed of 60 m / min, Was blown at a speed of about 15 m / sec to primarily dry the hot air at 35 DEG C, and then was secondarily dried at a wind speed of about 20 m / sec. After drying, it was subjected to hot air drying at a temperature of about 40 캜 for 24 hours.

Thereafter, the coated filter paper was passed through the rotating rolls having micropores of 1 탆 to 1.5 탆, while supplying water thereto. The filter paper was rotated at a speed of 70 m / min, and hot air of 30 ° C was tertiary dried at an air velocity of about 15 m / sec. Four degrees of hot air at 40 ° C was blown at a wind speed of about 3 m / .

Comparative Example 1

Coating was carried out in the same manner as in Production Example 1 except that the second to fourth drying was carried out for 24 hours at about 15 m / sec.

Comparative Example 2

Coating was carried out in the same manner as in Production Example 1, except that the first to fourth drying was performed at a temperature of 20 캜 for 3 hours at about 3 m / sec.

Comparative Example 3

The coating was carried out in the same manner as in Preparation Example 1, and the third and fourth drying were carried out in the same manner as the first and second drying.

[Example 2]

Evaluation of Coating

Since the cellulose acetate film has a high water absorption capacity, the film tends to curl depending on the ambient humidity after bonding to the filter paper. Therefore, it was evaluated in Production Example 1 and Comparative Examples 1 to 3 whether the coated filter paper had one side to be dried when it had 50% or 80% relative humidity.

At 50% relative humidity
Whether or not to dry At 80% relative humidity
Whether or not to dry Production Example 1 normal normal Comparative Example 1 Curled to one side Curled to one side Comparative Example 2 Curled to one side Curled to one side Comparative Example 3 normal Curled to one side

As a result, as shown in Table 1, it was found that the drying method according to Production Example 1 did not curl on one side even at 80% relative humidity. This is thought to be because the cellulose acetate film adheres completely to the filter paper during the stepwise drying process and the voids capable of absorbing moisture are reduced, and the water absorption capacity is lowered and the smooth coated surface is maintained.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. It is therefore intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

Claims (11)

Coating on the filter paper with a cellulose-based film using an adhesive;
Drying the coated filter paper with hot air at 15 to 25 占 폚 at a rate of 10 m / sec to 20 m / sec;
Secondary drying the primary dried material at 30 to 40 占 폚 with hot air at 10 m / sec to 20 m / sec;
Passing the rotating roll while supplying water to the secondary dried product;
Drying the secondary dried material passing through the rolls at 30 to 35 占 폚 with hot air at 10 m / sec to 20 m / sec; And
And a step of fourtharily drying the tertiary dried material at 10 to 20 m / sec with hot air at 35 to 45 ° C.
The method according to claim 1,
Wherein the cellulose-based film is a cellulose acetate film.
The method according to claim 1,
Further comprising the step of passing a rotating roll at 30 to 60 DEG C after the fourth drying.
The method according to claim 1,
Wherein the adhesive comprises 50 wt% to 60 wt% moisture.
The method according to claim 1,
Wherein the air velocity during the first and third drying is 10 m / sec to 20 m / sec.
The method according to claim 1,
Wherein the moisture is supplied through a roll having fine holes having a size of 1 mu m to 1.5 mu m.
The method according to claim 1,
Wherein the primary and tertiary drying is performed for 20 to 30 hours.
The method according to claim 1,
The primary and tertiary drying is a film coating of a filter paper wrapper for drying a filter wrapper coated with a cellulose-based film at a speed of 50 to 70 m / min
The coated filter paper is first dried and secondarily dried, and water is supplied to the additional dried product while passing through the rotating roll, and the dried product passed through the roll A cigarette filter wrapper coated with a cellulose-based film that is further dried twice.
10. The method of claim 9,
Wherein the cellulose-based film is a cellulose acetate film coated with a cellulose-based film.
10. The method of claim 9,
Wherein the roller passes through rolls of 30 DEG C to 60 DEG C after passing through the rolls and after two times of drying.