KR101906516B1 - Manufacturing method of thick Korean paper - Google Patents

Abstract

The present invention relates to a method for producing thick hanji (traditional Korean paper handmade from mulberry trees). More specifically, the present invention relates to a method for producing hanji, enabling production of thick hanji without laminating multiple sheets of thin hanji, comprising: a) immersing a frame in water at a specific depth; b) introducing a paper material in water infiltrated in the frame; c) spreading the paper material introduced in the frame; d) lifting the frame and settling fibers of the paper material on a frame net to obtain crude paper; and e) dehydrating and drying the crude paper.

Description

{Manufacturing method of thick Korean paper}

More particularly, the present invention relates to a method for producing Korean paper, which is capable of producing a thick Korean paper without a plurality of thin paper sheets.

Hangul has been traditionally traditionally inherited from our past to present, which has been used for printing, printing, and architectural materials, but nowadays, its use has been disappearing due to the development of alternative materials.

The raw materials for the manufacture of Korean paper are mainly used bast fibers such as mulberry, mulberry, mulberry, mulberry, etc. Recently, non-wood fiber materials which can be substituted have been studied. However, It is not known about the composition of the fineness, concentration, etc.

The manufacturing process of Korean paper is as follows.

→ picking → picking → dough boiling → dipping → peeling → debarking → making white rice → drying → drying → boiling (Bleaching) → TeGoGi (dust removal) → tapping (beating solution) → dissociation → papermaking → papermaking → water draining (squeeze dehydration) : The process of squeezing water → drying → drying → calendering → inspection (selection: selection).

The Hanji made by such a process exhibits the same material properties as the non-wood fiber, dandruff fiber. However, it is used in many applications due to its light weight, quality and excellent preservability. However, it is weak in water, But its use is limited due to technical problems that can not be manufactured.

It is possible to build a foundation as a new material industry and create a high value-added material industry that can create new applications and new demand by developing materials and paving methods by combining our traditional industry, Hanji with modern science. However, there is no known method for preparing the raw materials and papermaking method.

In particular, the leather industry is an industry that generates a lot of emissions from the environment, and it has become a target of criticism from animal lovers using endangered and rare animal leather. If some of these leather fabrics and products are developed as replaceable materials for Korean paper, they can be commercialized in a short period of time.

Currently, Korean paper craftsmen manufactured by Hanji craftsmen are manufactured with the technique of shedding (unfolding) and the technique of putting on the shedding (twinning). However, these methods are only capable of producing hanji with a maximum basis weight of 30 to 35 g / There is a limit to the use of the field of application is a reality.

Even if we try to make thick and thick Korean paper, there is a phenomenon that the fibers of the heading flow down due to the high fluidity just before the fibers settled on the feet are formed as paper in the shedding, We can not produce thick paper.

Current thick paper manufacturing methods consist of two or more sheets of thin paper with a certain thickness. In the past, our paper has made thick paper by the method called zooming method. In the method of making thick paper by using the zooming method, one sheet of paper is spread out on a flat surface, water is sprayed, and another one is overlaid and water is sprinkled repeatedly over a desired thickness so as to squeeze water from both sides, It is a method to produce thick Korean paper by artificially making hydrogen bonding by making. In the zooming method, a plurality of sheets of paper are stacked, and there is a problem that segregation occurs between the paper sheets over time.

KR 10-0523376 B1 (2005.10.15)

In order to solve such problems as the shedding technique and the layer separation of the zooming method, the present invention provides a method of manufacturing a paper sheet of a thick thickness which does not cause the layer separation to occur, And a method for manufacturing Korean paper.

According to an aspect of the present invention,

comprising the steps of: a) submerging the battle into water at a certain depth;

b) introducing the feedstock onto the water infiltrated into the barrel;

c) hitting the stocks charged in the basket;

d) picking up the fiberglass so that the fiber of the fiberglass is settled on the feet to obtain grass;

and d) dewatering and drying the grass.

The step a) is a step of submerging the water into the water contained in the water tank to a certain depth,

And both sides of the barrel are provided with hooks which are fixed to the upper end of the water tub in a state in which the barrel is immersed in the water of the water tub at a certain depth.

It is preferable that the dough pulp in step b) be a mixture of duck pulp and abaca pulp.

Particularly, it is preferable that the above-mentioned material is a mixture of 5 to 90 parts by weight of Abaco pulp with respect to 100 parts by weight of the duck pulp. Preferably, 5 to 10 parts by weight of wood pulp is added to 100 parts by weight of the duck pulp Mix well.

The method of producing a wide range of paper of the present invention has the effect of producing a paper sheet of a thick thickness which is not likely to cause separation of layers without forming a plurality of thin paper sheets.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flowchart schematically showing a method for manufacturing a thick paper of the present invention.
2 is a view schematically showing a water tank containing water,
Fig. 3 is a view showing a state in which the ball is immersed in the water tank at a certain depth,
Fig. 4 is a view schematically showing a state in which dust is put into water in a battle. Fig.

Hereinafter, a method for manufacturing a thick paper of the present invention will be described in detail as follows.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart schematically showing a procedure of a method for manufacturing a thick paper of the present invention.

The method of manufacturing a thick paper of the present invention is as shown in Fig. 1, and includes a soaking step S10, a loading step S20, a soil dispersion step S30, a papermaking step S40, a dehydrating and drying step S50 ).

First, in the step of immersing the floors (S10), the floors (30) are immersed in the water (110) contained in the water tank (10).

FIG. 2 is a view schematically showing a water tank containing water, and FIG. 3 is a view showing a state in which a sinker is immersed in a water tank at a certain depth.

The water (110) is stored in the water tank (10) as shown in FIG. The water 110 contained in the water tank 10 is intended to improve the dispersibility of the material to be charged in the material charging step S20.

The barrette 30 is composed of a square frame 310 having a predetermined height and a foot 330 placed in the upper frame square 310. The square frame 310 may be manufactured in various shapes such as a polygonal shape including a square shape, a circular shape, an elliptical shape, and the like depending on the shape of the paper to be manufactured.

The feet 330 penetrate the water 110 of the water tank 10 when the float 30 is immersed in the water 110 of the water tank 10, Materials and structures that can be pulp-filtered are sufficient.

It is preferable that the catching platform 350 is formed on the upper part of the float 30 in order to fix the position of the float 30 to the water tank 10 while being immersed in the water contained in the water tank 10 to a certain depth.

The catching platform 350 includes a catching part 352 provided at one side of the catching part 30 and fixed to one side of the water tub 10 and a catching part 352 provided at the other side of the catching part 30, And the other side restraint 354 is fixed to the other side.

Next, in step S20, the landfill 30 is poured into the infiltrated water.

Fig. 4 is a view schematically showing a state where a stock is put into water in a battle. Fig.

It is preferable that the above-mentioned material is made of duck pulp mixed with abaca pulp. When the float 30 is tilted to one side when separating the float 30 from the water tank 10 due to poor water dripping when the floors 30 made of only duck pulp are introduced into the float 30, There is a problem that there is a possibility of flowing down. However, when the abaca pulp having good water dripping property is mixed with the dodo pulp, the water dripping property is improved, so that even when the disinfection head 30 is tilted to one side when the disinfection head 30 is separated from the water tub 10, There is no fear of flowing down to one side, and a uniform paper having a uniform thickness can be obtained.

It is preferable that the abaca pulp is mixed with 5 to 90 parts by weight with respect to 100 parts by weight of the dough pulp in order to improve water solubility and to obtain a uniform paper having a uniform thickness.

Further, the dough pulp may further be mixed with wood pulp to further improve water dripping property. The wood pulp is preferably mixed with 5 to 10 parts by weight with respect to 100 parts by weight of the dough pulp.

In order to improve the dispersibility of the stock in step S30, it is preferable to mix a dispersant such as polyacrylamide.

The groundwater is introduced into the water 110 infiltrated on the float 30 and the pulp of the groundwater charged into the water 110 is dispersed in water.

The paper material can be supplied in a large amount to the water 110 of the cutlery 30 and pulp of the fed paper material does not escape from the cuttle 30, so that it is possible to manufacture a paper sheet with a thick thickness. Further, by controlling the amount of the feedstock to be fed into the above-described barrel 30, it is possible to produce thick Korean paper having a desired thickness.

In the step S30, the pulp of the pulp is dispersed by passing the pulp into the water in the pulp 30.

At this time, the above-mentioned material can be rolled by using a hand or a tool.

By pulverizing the feedstock put into the water in the above-described barrel 30, the pulp of the above-mentioned feedstock is uniformly dispersed in water, so that the paper having excellent physical properties and uniform thickness can be obtained.

Next, the papermaking step S40 is a step of lifting the float 30 to set the pulp fibers of the ground material on the feet 330 to obtain wet paper. The flocculant 30 may be lifted from the water tank 10 in a state where the pulp of the material is uniformly dispersed in the water by the water dispersing step S30, have.

If the thick wet paper is dewatered and dried in the same manner as the conventional method, a thick paper sheet made of a single sheet can be obtained.

As described above, the thick paper of the present invention is advantageous in that there is no fear of layer separation due to the fact that a plurality of sheets of paper are not joined together as in the prior art but are formed as a single sheet. Particularly, since there is no possibility of layer separation, it can be used in various paper making arts such as hanji leather, hanji shoes, and paper bags.

Next, a method for producing a thick paper of the present invention will be described with reference to the following examples, and the scope of the present invention is not limited to the following examples.

[Examples 1 to 6]

The mulberry bast fibers were placed in a cooked pot and the contents were adjusted to 10% of NaOH based on the raw material, heated for 1 hour, stirred for 3 hours, and incubated for 24 hours. NaOH and the like were completely removed by washing the mulched mulberry bast fiber, and then the tea was completely removed by putting it in the washing tank. Then, the mulberry bast fibers were removed using a knife bitter to remove foreign matter such as tea. At this time, the pulp concentration was adjusted to 2 to 5%, and the amount of the polyacrylamide as a dispersing agent was added in the range of 0.01 to 0.02% to the pulp fiber, and the pulp was pulverized for 20 to 30 minutes.

The paper mulberry pulp, the wood pulp and the abaca pulp were added to the trough at the mixing ratios shown in Table 1 below.

Mixing ratio of pulp materials (% by weight) Duck pulp Wood pulp Abaca pulp Example 1 90 5 5 Example 2 70 5 25 Example 3 50 5 45

The soaked water was immersed in a water bath containing about 20 cm of water. At this time, the size of foot of foot was 64cm × 94cm.

Approximately 4,000 mL of the mixed materials of Examples 1 to 3 were put into the water in the above-described bag, respectively, and then the arm was opened and the abovementioned wettail was lifted to the upper side of the water tank to obtain wetlands of Examples 1 to 3. Then, the wet paper was dewatered and dried in the same manner as the conventional method to prepare the paper sheets of Examples 1 to 3 thick.

The thickness, thickness, density, and strength characteristics of the thick paper of Examples 1 to 3 thus prepared were measured, and the results are shown in Table 2. < tb > < TABLE >

The analysis of the properties of Korean paper was carried out according to the method of KS M ISO 187 after 24 hours of humidification in a constant temperature and humidity room controlled at a temperature of 20 ° C and a relative humidity of 65%.

The basis weight of Korean paper was determined by repeating 10 times by multiplying 100 by the weight of a test specimen of 10 × 10 cm in grams per square meter, which is the basic weight of paper representing the weight per unit area of paper according to KS M ISO 536 standard.

The tensile strength and wet tensile strength of Korean paper were measured by KS M ISO 1924, and the wet tensile strength was measured after humidity treatment according to KS M 7012. The tear strength of Korean paper was measured according to the method of KSM ISO 1974 and the tear strength was measured according to the method of KS M ISO 2758. The theorem was measured according to the method of KS M 7068.

Example 1 Example 2 Example 3 Basis weight (g / m2) 148 148.5 150.7 Thickness (mm) 0.447 0.466 0.504 Density (g / cm3) 0.33 0.32 0.30 The tensile strength
(kN / m) MD 14.5 9.57 9.42 CD 6.99 4.62 4.63 Wet tensile strength
(N / m) MD 632 441 436 CD 343 205 201 Phosphorus strength
(mN) MD 7243 5523 5385 CD 7895 6907 5448 Bursting strength (kPa) 798 597 497 My theft
(Times) MD 1182 1039 698 CD 610 249 164

As shown in Table 2, the thicker paper of Examples 1 to 3 had a basis weight of 148.0 g / m 2 or more, a thickness of 0.466 mm or more, and a density of 0.30 g / cm 3 or more. And the tendency that the change of the two becomes slightly thicker is shown.

Tensile strength, wet tensile strength, tear strength and bending strength were all excellent, especially in the case of tear strength, the value is not enough to be taken well in the direction of MD 5523mN or more and CD 5448mN or more. Bags and so on.

10: water tank,
110: water,
30: Baltlle

Claims (6)

comprising the steps of: a) submerging the battle into water at a certain depth;
b) introducing the feedstock onto the water infiltrated into the barrel;
c) hitting the stocks charged in the basket;
d) picking up the fiberglass so that the fiber of the fiberglass is settled on the feet to obtain grass;
e) dewatering and drying the grass,
The bloom of step b) is a mixture of dac pulp and abaca pulp,
Wherein 5 to 90 parts by weight of Abaco pulp and 5 to 10 parts by weight of wood pulp are mixed in 100 parts by weight of the duck pulp.
The method according to claim 1,
Wherein the step (a) is a step of immersing the ball in the water contained in the water tank to a certain depth.
3. The method of claim 2,
Wherein a hanging base is provided on both sides of the bar so that the bar is fastened to the upper end of the bar in a state that the bar is immersed in the water of the barrel at a certain depth.
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