KR102317496B1 - Hanji towels and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a Korean paper towel and a method for manufacturing the same, and to a Korean paper towel having excellent moisture absorption, excellent tensile strength in standard and wet conditions, and excellent antibacterial and deodorizing properties, and a method for manufacturing the same, a) obtaining a laminated sheet by sequentially stacking Korean paper and a second Tencel nonwoven fabric on the first Tencel nonwoven fabric; b) a first waterjet treatment step of entangling each fiber of the first Tencel nonwoven fabric, Korean paper, and the second Tencel nonwoven fabric by waterjetting the second Tencel nonwoven fabric side of the laminated sheet; c) a second waterjet treatment step of entangling each fiber of the first Tencel nonwoven fabric, Korean paper, and the second Tencel nonwoven fabric by waterjetting the first Tencel nonwoven fabric side of the first waterjet treated laminated sheet; characterized.

Description

Hanji towels and manufacturing method thereof

The present invention relates to a Korean paper towel and a method for manufacturing the same, and particularly, to a Korean paper towel having excellent moisture absorption, excellent tensile strength in standard and wet conditions, and excellent antibacterial and deodorizing properties, and a method for manufacturing the same.

In general, towels are mainly made of cotton yarn and are woven in the form of piles, and most of them are rectangular in shape.

Its main use is to wipe off water or sweat after washing a person's face or body, and sometimes it is also used to wipe off foreign substances on the skin. Because it is in direct contact with the skin, it is pleasant to the touch, absorbs moisture well and allows for good ventilation.

The size varies depending on the use, but the ones used for bathing are large, while others are made smaller for carrying when going out. In addition to washing, there are also those made for sports.

On the other hand, even if a towel is used only once, bacteria and mold spores are transferred along with the dead skin cells, skin cells, sebum, and various secretions while wiping the face on the towel, so bacteria are easy to propagate. In particular, the bathroom is an environment where the growth and proliferation of microorganisms is easy due to the high temperature and humidity.

Towel drying apparatuses for drying and sterilizing towels due to the problems in use of such towels have recently been developed and are on the market.

Furthermore, antibacterial towels have been proposed in Patent Documents 0001 to 0002.

Patent Document 0001 discloses a towel containing tourmaline, in which a tourmaline (TOUR MAINE) material, which is an environmentally friendly mineral, is mixed with the raw material of the towel 10 when the towel 10 is manufactured, or coated (80) weaving (100) or It has the advantage of being clean and safe as it can emit negative ions and far-infrared rays by weaving.

Patent document 0002 relates to an antibacterial towel, and is a towel using nano silver powder and colloidal silver, that is, a silver solution (Ag), which are substances that have strong antibacterial and sterilizing action on a normal towel used every day. Add a certain amount to cotton, cotton yarn, non-woven fabric, micro fiber, or synthetic resin, which is the material of It relates to a nano-silver antibacterial towel that is woven, knitted or coated with the yarn of a towel by using it.

Although the towels of Patent Documents 0001 and 0002 have antibacterial properties by tourmaline or nanosilver, when a large amount of tourmaline or nanosilver is coated to improve antibacterial properties, there is a problem in that the moisture absorption rate is lowered and the feel is lowered.

KR10-0691171B1 (2007.02.28) KR20-0386571Y1 (2005.06.01)

An object of the present invention to solve such conventional problems is to provide a Korean paper towel having excellent moisture absorption, excellent tensile strength in standard and wet conditions, and excellent antibacterial and deodorizing properties, and a method for manufacturing the same. .

The present invention for achieving the above object,

a) obtaining a laminated sheet by sequentially stacking Korean paper and a second Tencel nonwoven fabric on the first Tencel nonwoven fabric;

b) a first waterjet treatment step of entangling each fiber of the first Tencel nonwoven fabric, Korean paper, and the second Tencel nonwoven fabric by waterjetting the second Tencel nonwoven fabric side of the laminated sheet;

c) a second waterjet treatment step of entangling each fiber of the first Tencel nonwoven fabric, Korean paper, and the second Tencel nonwoven fabric by waterjetting the first Tencel nonwoven fabric side of the first waterjet treated laminated sheet; It provides a method of manufacturing a Korean paper towel, characterized in that.

The first tencel nonwoven fabric and the second tencel nonwoven fabric may have a fiber length of 30 to 50 mm and a basis weight of 40 to 50 g/m 2 .

And it is preferable to use the Korean paper having a basis weight of 10 to 25 g/m 2 and a tensile strength of 1.5 to 2.0 Kgf/cm 2 .

In particular, in the first water jet treatment step and the second water jet treatment step, it is preferable to treat the water jet at a pressure of 3.5 to 7.0 MPa.

In addition, the present invention provides a Korean paper towel, characterized in that manufactured by the method for manufacturing the Korean paper towel.

The method of manufacturing a Korean paper towel of the present invention is to prepare a Tencel/Korean paper composite sheet by water jetting the lower and upper sides of the laminated sheet sequentially stacked with the first Tencel nonwoven fabric, the Korean paper and the second Tencel nonwoven fabric, and the first Tencel nonwoven fabric Tencel yarns, mulberry fibers of Korean paper, and tencel yarns of the second Tencel nonwoven fabric are entangled with each other, so that the surface is soft and flexible, the tensile strength and elongation are excellent, and the moisture absorption rate, antibacterial property and deodorization property are excellent.

Hereinafter, the Korean paper towel of the present invention and its manufacturing method will be described in detail as follows.

The manufacturing method of the Korean paper towel of the present invention largely includes a lamination sheet forming step, a first water jet treatment step, and a second water jet treatment step.

First, the step of forming the laminated sheet is a step of sequentially laminating Korean paper and the second Tencel nonwoven fabric on the first Tencel nonwoven fabric to obtain a laminated sheet.

The first Tencel nonwoven fabric and the second Tencel nonwoven fabric are manufactured by forming a web by passing tencel short fibers to other cotton and carding processes. Tencel is a cellulose fiber regenerated from wood pulp, has a soft feel, excellent moisture absorption and antibacterial properties, and excellent physical properties.

In particular, the first tencel nonwoven fabric and the second tencel nonwoven fabric may be formed of short tencel fibers having a fiber length of 30 to 50 mm. When the fiber length of the short tencel fibers is less than 30 mm, the tensile strength and tensile elongation of the Tencel/Korean paper composite sheet are not good. There is a problem that the mulberry fibers are not effectively entangled with each other.

And it is preferable that the basis weight of the first tencel nonwoven fabric and the second tencel nonwoven fabric is 40 to 50 g/m 2 . When the basis weight of the first Tencel nonwoven fabric and the second Tencel nonwoven fabric is less than 40 g/m2, there is a problem in that physical properties such as tensile strength and tensile elongation are not good, and when the basis weight is more than 50 g/m2, the first Tencel nonwoven fabric, Korean paper and the second Tencel nonwoven fabric There is a problem that the entanglement between the fibers does not completely occur.

In addition, the Korean paper is laminated on the first Tencel nonwoven fabric, and the second Tencel nonwoven fabric is laminated on the Korean paper to obtain a laminated sheet having a first Tencel nonwoven fabric/Korean paper/second Tencel nonwoven fabric structure.

The main raw material of the Korean paper is the bast fiber of mulberry tree, which is tough and not easily torn, so it has strong durability, softness, good ventilation, and excellent preservation.

In particular, it is preferable to use Korean paper having a basis weight of 10 to 25 g/m 2 and a tensile strength of 1.5 to 2.0 Kgf/cm 2 .

When the basis weight of the Korean paper is less than 10 g/m2, the effect of the Korean paper cannot be obtained, and when it exceeds 25 g/m2, there is a problem that the mulberry fibers of the Korean paper cannot be completely entangled with the short tencel fibers.

Next, the first waterjet treatment step is a step of entangling each fiber of the first Tencel nonwoven fabric, the Korean paper, and the second Tencel nonwoven fabric by waterjetting the second Tencel nonwoven fabric side of the laminated sheet.

By treating the water jet on the second Tencel nonwoven fabric side of the laminated sheet, the Tencel staple fibers of the second Tencel nonwoven fabric are randomly entangled with each other and combined with the mulberry fibers of Korean paper and the Tencel staple fibers of the second Tencel nonwoven fabric.

In this case, the water jet treatment is preferably performed by water jet treatment at a pressure of 3.5 to 7.0 MPa on the second Tencel nonwoven fabric layer of the laminated sheet. When the pressure of the water jet is less than 3.5 MPa, the short tencel fibers of the second tencel nonwoven fabric do not sufficiently entangle the tencel staple fibers of the Korean paper and the second tencel nonwoven fabric. When the pressure of the water jet exceeds 7.0 MPa, the short tencel fibers of the second tencel nonwoven fabric are scattered or cut by the high-pressure fluid, so that the surface is uneven.

And, the second waterjet treatment step is a step of waterjet treatment on the opposite side of the laminated sheet waterjet-treated on the second Tencel nonwoven fabric side by the first waterjet treatment step, that is, on the first Tencel nonwoven fabric side.

In the laminated sheet waterjet-treated by the first waterjet treatment step, the short tencel fibers of the second tencel nonwoven fabric are combined with the mulberry fibers of the Korean paper and the tencel staple fibers of the first tencel nonwoven fabric by a high-pressure fluid, but the bonding force between the fibers is weak. Physical properties such as tensile strength and tensile elongation are not sufficient.

Accordingly, waterjet treatment was performed on the first tencel nonwoven fabric side of the laminated sheet subjected to the first waterjet treatment, and the tencel staple fibers of the first tencel nonwoven fabric were mixed with the mulberry fibers of the Korean paper and the short fibers of the second tencel nonwoven fabric with a high-pressure fluid. By entangling, the bonding force between fibers can be improved, and physical properties such as tensile strength and tensile elongation can be improved.

The waterjet treatment pressure in the second waterjet treatment step is preferably 3.5 to 7.0 MPa on the first Tencel nonwoven fabric layer of the laminated sheet as in the first waterjet treatment step.

Next, by drying the laminated sheet after the first waterjet treatment step and the second waterjet treatment step, a Korean paper towel can be obtained.

The Korean paper towel manufactured in this way has excellent physical properties such as tensile strength in standard and wet conditions, and has excellent moisture absorption, antibacterial properties and deodorization properties.

In addition, the manufacturing method of the Korean paper towel of the present invention will be described in more detail with reference to examples, and the scope of the present invention is not limited to the following examples.

[Example]

Tencel nonwoven fabrics having an average fiber length of 45 mm and a basis weight of 45 g/m2, and Korean paper having a basis weight of 20 g/m2, a tensile strength in the MD direction of 1.66Kgf/cm2, and a tensile elongation of 1.39 were prepared.

Then, a laminated sheet was prepared by laminating in the order of Tencel nonwoven fabric/Korean paper/Tensel nonwoven fabric. After water jet treatment on the upper side of the manufactured laminated sheet, water jet treatment on the lower side and drying were performed to prepare a Korean paper towel.

At this time, the water jet treatment pressure was 4.5 MPa, and the inner diameter of the jet nozzle of the water jet was 0.1 mm.

[Test of tensile strength, etc.]

Tensile strength, tensile strength in wet state, rupture strength, and air permeability were measured for the Korean paper towels of Examples, and the results are shown in Table 1. At this time, the tensile strength is KS M ISO 1924-3 (paper and paperboard - measurement of tensile properties), the rupture strength is KS M ISO 2758 (paper - measurement of rupture strength), and the air permeability is KS M ISO 5636-3 (paper and cardboard) -Measurement of air permeability) was tested. And the tensile strength in the wet state was measured by the method of KS M ISO 1924-3 (paper and paperboard - measurement of tensile properties) in the state of immersing in water for 30 minutes and then wiping the water on the surface.

basis weight
(g/m2) tensile strength
(Kgf) tensile extension
(mm) wetting
Tensile strength (Kgf) wetting
Tensile Elongation (mm) burst strength
(Kgf/㎠) speculation
(sec)
Example

95
2.15
34.07
3.60
53.48
6.1
One

As can be seen in Table 1, the Korean paper towel of the example was measured to have a high tensile strength of 2.15 Kgf and a tensile elongation of 34.07 mm.

In particular, the wet tensile strength and wet tensile elongation of the Korean paper towel of Example were measured to be about 1.6 times higher than the general tensile strength and tensile elongation, respectively. Accordingly, there is no risk of tearing easily even after wiping with a Korean paper towel, and there is an advantage of excellent washing resistance.

In addition, the Korean paper towel of the embodiment has a high breaking strength of 6.1Kgf/cm 2 and excellent air permeability.

[Deodorization Test]

A deodorization test was carried out for trimethylamine and ammonia on the Korean paper towels of Example. At this time, for the deodorization test, a sample cut into a size of 100 mm × 200 mm was placed in a reactor and sealed, the initial concentration of the test gas was injected at 20 μmol/mol, and the concentration of the test gas was adjusted to the initial (0 min), 30 min, Measurements were made at 60 minutes, 90 minutes, and 120 minutes, and the concentration of the test gas was measured by a gas detection tube. The test results for this are shown in Table 2.

Test Items trimethylamine ammonia Blank concentration
(μmol/mol) sample concentration
(μmol/mol) Concentration reduction rate
(%) Blank concentration
(μmol/mol) sample concentration
(μmol/mol) Concentration reduction rate
(%)

deodorization
exam 0 minutes 50 50 0.0 50 50 0.0 30 minutes 49 20 59.2 49 19 61.2 60 minutes 49 14 71.4 49 15 69.4 90 minutes 49 12 75.5 49 14 71.4 120 minutes 49 11 77.6 49 13 73.5

As can be seen in Table 2, the Korean paper towels of Examples showed a deodorization effect such as a 77.6% reduction in concentration of trimethylamine and a 73.5% reduction in concentration in the case of ammonia after 120 minutes of deodorization test for trimethylamine and ammonia gas. great.

Claims (5)

a) sequentially stacking Korean paper and a second Tencel nonwoven fabric on the first Tencel nonwoven fabric to obtain a laminated sheet;
b) a first waterjet treatment step of entangling each fiber of the first Tencel nonwoven fabric, Korean paper, and the second Tencel nonwoven fabric by waterjetting the second Tencel nonwoven fabric side of the laminated sheet;
c) a second waterjet treatment step of entangling each fiber of the first Tencel nonwoven fabric, Korean paper, and the second Tencel nonwoven fabric by waterjet treatment on the first Tencel nonwoven fabric side of the first waterjet treated laminated sheet;
The first tencel nonwoven fabric and the second tencel nonwoven fabric have a fiber length of 30 to 50 mm, and a basis weight of 40 to 50 g/m 2 ,
The Korean paper has a basis weight of 10 to 25 g/m2, and a tensile strength of 1.5 to 2.0 Kgf/cm ² ,
In the first waterjet treatment step and the second waterjet treatment step, a method of manufacturing a Korean paper towel, characterized in that the waterjet treatment is performed at a pressure of 3.5 to 7.0 MPa.
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