KR20030071211A - Non-woven fabric for culvert and manufacturing method thereof - Google Patents

Abstract

PURPOSE: A non-woven fabric for a culvert and a manufacturing method thereof are provided to construct the culvert easily and fast by attaching the non-woven fabric to both ends after removing release papers. CONSTITUTION: A non-woven fabric(100) for a culvert is made by laminating polyester resin filaments to a porous belt from two to eight deniers in fineness. Therein, basic weight becomes from one hundred to five hundred grams per square meter. Either one of ends has an adhesive layer(110) protected by a release paper(120). Therefore, the non-woven fabric is attached easily by releasing the release paper from the adhesive layer.

Description

Non-woven fabric for blind hides and its manufacturing method {NON-WOVEN FABRIC FOR CULVERT AND MANUFACTURING METHOD THEREOF}

The present invention relates to a non-woven fabric for the siamese tiger used as a covering material to filter the water while the soil and the like is mixed in the siam tiger tube installed in the scavenger erection constructed in civil engineering to prevent clogging of the scavenger duct and its manufacturing method In particular, the present invention relates to a nonwoven fabric for blind rock having excellent workability and a method of manufacturing the same.

In general, Bam-Geul, which is widely used in various civil works, road works, landscaping works, and retaining walls, prevents water flowing from the highlands from flowing into the ground below the road, or reduces the amount of water contained in the soil voids. It is constructed to block or lower the groundwater level to prevent the loss of soil and to improve the durability of the soil.

Looking at the construction process of such a blind claw 20 with reference to Figure 3, after drilling the ground layer in general, the perforated holes 24 formed, that is, the blind duct pipe 22 is installed (covering so that the blind bilge pipe is not blocked) And a gravel tube 22 surrounded by ash (10), filled with gravel (28) to form a permeable layer (26) around it, and then the permeable layer (26) so that the blind chamber tube (22) is not blocked. Surrounding the outside with a covering material 10 to form a blind chamfer (20). Then, when the cover layer is made to cover the top of the blind claw 20, the construction of the blind claw 20 is completed. Therefore, the water that collects in the surface layer during rainy weather and soaks into the soil is collected through the permeable layer 26 through the permeable holes 24 of the blind shell pipe 22 and thus into the blind shell pipe 22. While drainage is made, the loss of soil to the blind culvert tube 22 is prevented by the covering materials 10.

In such blind culvert 20, the polypropylene woven fabric was mainly used as the covering material 10 conventionally. However, in the case of this woven fabric, the woven part is opened by water pressure or earth pressure, so that the soil is not filtered, and the soil is accumulated in the blind lumber tube 22 by permeating to the blind lumber tube 22, thereby degrading its function as a drainage facility. There is a problem.

In addition, in the case of using the conventional nonwoven fabric as the covering material 10, there is a problem in that the mechanical properties, water permeability and filterability have not been verified, and the like, and the reliability of the drainage function is lowered.

Furthermore, the conventional covering member 10 surrounds the blind chamber tube 22 or the permeable layer 26 and then binds the covering member 10 by a worker to manually wire or strap both ends of the covering member 10 manually. Due to the binding in the binding method using the binding means 12, etc., the work is difficult, when the binding force is weak to cover the soil, there was a problem that the soil is mixed into the blind pit 22.

The present invention has been made in consideration of the above-described conventional problems, and an object of the present invention is to provide a nonwoven fabric having excellent mechanical properties capable of withstanding load and excellent blindness construction properties.

1 is a schematic cross-sectional view showing a nonwoven fabric according to the present invention.

2 is a schematic cross-sectional view showing a blind culvert applied nonwoven fabric according to the present invention.

3 is a schematic cross-sectional view showing a blind arm to which a conventional nonwoven fabric is applied.

<Explanation of symbols for the main parts of the drawings>

100: nonwoven fabric, 110: adhesive layer,

120: release paper, 200: blind cancer,

210: Blind Caviar

In order to achieve the above object, the blind fabric nonwoven fabric according to the present invention is laminated with a polyester resin filament on the porous belt so that the fineness of the constituent fibers is 2 to 8 denier, the basis weight is 100 ~ 500g / ㎡ It is made so as to have, and at least one end characterized by having an adhesive layer protected by a release paper.

In addition, the method for manufacturing the blind fabric nonwoven fabric according to the present invention comprises the steps of melting a polyester resin in an extruder to spin through a hole of a predetermined size to form a filament and stretch the filament to impart a predetermined strength; Opening the stretched filament strands by a dispersing apparatus and laminating them on a porous belt which is continuously moved so that the fineness of the constituent fibers is 2 to 8 deniers and the basis weight is 100 to 500 g / m 2; And forming an adhesive layer protected by the release paper at one end while being punched to have a predetermined permeability.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

As shown in Fig. 1 and Fig. 2, the blind fabric nonwoven fabric 100 according to the present invention, at least one end is provided with an adhesive layer 110 protected by a release paper 120. Therefore, the construction of the blind pit 200 surrounds the permeable layer 220 formed of the blind pit tube 210 or the gravel 222 formed with the permeable holes 212, and then peels off the release paper 120 from the adhesive layer 110 and the nonwoven fabric. If both ends of the (100) are bonded to each other by the adhesive layer (110), the installation of the nonwoven fabric (100) can be simplified.

The non-woven fabric 100 for the dark mulger should be a porous material that can permeate the water and at the same time have a pore smaller than the soil particles have a filtering characteristic. It must also have mechanical properties that must withstand the loads of imported or covered soil.

To this end, the blind fabric nonwoven fabric 100 of the present invention is made by laminating a polyester resin filament on the porous belt so that the fineness of the constituent fibers is 2 to 8 deniers so that the basis weight is 100 to 500 g / m 2. .

Next, the method for manufacturing the blind woven fabric according to the present invention described above will be described.

First, the polyester resin is melted in an extruder and spun through a hole of constant size to form a filament. This filament is stretched to impart a predetermined strength.

Next, the stretched filament strands are opened by a dispersing apparatus and laminated on a porous belt which is continuously moved so that the fineness of the constituent fibers is 2 to 8 deniers and the basis weight is 100 to 500 g / m 2. At this time, the stretched filament strands may be laminated on the porous belt by the suction force of the air suction device installed in the lower portion of the porous belt. In addition, the determination of the weight per unit area of the nonwoven fabric may be determined by the amount of polymer discharged per hour and the moving speed of the porous belt. In addition, the fineness is in the range of 2 to 8 denier. The fineness is excellent when the fineness is less than 2 denier, but the problem of water permeability decreases. When the fineness is larger than 8 denier, the permeability is excellent but the pore size is soiled. This is because there is a fear that the blind ulcer tube 210 is blocked by penetrating the soil larger than the particle size. In addition, the mechanical properties and water permeability of the nonwoven fabric 100, which is a covering material for blind rock, are highly dependent on the weight per unit area of the nonwoven fabric 100. In the present invention, the basis weight of the nonwoven fabric 100 is 100 to 500 g / The reason of the range of ㎡ is that the permeability is excellent when the basis weight is less than 100g / ㎡, but may be damaged by the impact and load of sand or gravel to be covered, and the mechanical characteristics when the basis weight is larger than 500g / ㎡. This is because the durability to the excellent permeability can be reduced.

Finally, the adhesive layer 110 protected by the release paper 120 is formed on at least one end thereof while being punched by needle punching to have a predetermined permeability.

<Example>

The polyester chips were melted in an extruder and spun through holes of constant size to form filaments and stretched to impart strength. These elongated filament strands were opened by a disperser and laminated onto a continuously moving porous belt to form a web. The fineness of the constituent fibers is determined by the hole size of the cap, the discharge amount of the polymer, and the degree of stretching of the filament. The basis weight of the nonwoven fabric 100 is determined by the discharge amount of the polymer and the moving speed of the porous belt. Fiber-bonding methods that impart morphological stability and mechanical properties of the nonwoven fabric 100 are generally a thermal calender method and a needle punching method, but in this embodiment was prepared by a needle punching method. An adhesive layer was formed by attaching an adhesive material to the nonwoven fabric to attach and connect both ends of the nonwoven fabric during the needle punching process. At this time, a double-sided adhesive tape having a width of 30 mm protected by a release paper was used as the adhesive material.

The characteristics of the nonwoven fabric thus prepared were measured as follows, and the results are shown in Table 1 below.

The tensile strength

Specimens having a sample width of 5 cm and a sample length of 7.5 cm were analyzed under the condition of a tensile speed of 300 mm / min by ASTM D 1682-64 method.

Elongation

Elongation at maximum tensile strength measured by the above tensile strength measurement method was obtained.

<Example 2>

The preparation method was the same as in Example 1, but was prepared with a basis weight of 250g / ㎡, the properties are shown in Table 1.

Comparative Example 1

The preparation method was the same as in Example 1, but was prepared with a basis weight of 100g / ㎡, the characteristics are shown in Table 1.

Comparative Example 2

The manufacturing method was the same as in Example 1, but the basis weight was 300 g / m 2, and the bonding layer was a double-sided adhesive tape having a width of 10 mm protected by the release paper 120.

Item Example 1 Example 2 Comparative Example 1 Comparative Example 2 Nonwoven Fabric (100) Weight (g / ㎡) 150 250 100 300 Fineness (denier) 5 5 5 5 burglar MD 60 110 40 130 CD 40 71 22 83 Shinto MD 70 70 60 65 CD 80 75 75 75 End Bondability Great Great Great Inadequate

In the blind fabric nonwoven fabric according to the present invention configured as described above and a method for manufacturing the same, since the adhesive layer protected by the release paper is provided at the end of the nonwoven fabric, it is only necessary to remove the release paper and attach both ends when the blind fabric is constructed. In the conventional construction of the blind lumber, the worker can perform the construction of the blind lumber, much easier and faster than combining the both ends of the nonwoven fabric using a wire or by drilling a hole in both ends of the nonwoven fabric. In addition, it is possible to prevent the soil from being mixed into the blind lumber pipe as in the conventional blind lumber construction process by the simple construction of the scavenger, thus ensuring the reliability of the scavenger and extending its lifespan.

Claims (2)

The polyester resin filament is laminated on the porous belt so that the fineness of the constituent fibers is 2 to 8 denier, so that the basis weight is 100 to 500 g / m 2, and at least one end has an adhesive layer protected by a release paper. Non-woven fabric for blind cancer. Melting the polyester resin in an extruder and spinning it through holes of a predetermined size to form a filament and draw the filament to impart a predetermined strength; Opening the stretched filament strands by a dispersing apparatus and laminating them on a porous belt which is continuously moved so that the fineness of the constituent fibers is 2 to 8 deniers and the basis weight is 100 to 500 g / m 2; And, Punching to have a predetermined permeability and at the same time forming an adhesive layer protected by a release paper at one end, characterized in that it comprises a non-woven fabric for blind geom.