KR200343818Y1 - Producing method of polyster absorptive material - Google Patents

Abstract

The present invention relates to a polyester sound absorbing material made of polyester fiber, and particularly, to provide a polyester sound absorbing material having improved aesthetics by improving the surface smoothness and printing a pattern and a photo of the actual picture according to a customer's order. .

The present invention uses the composition of the main polyester fiber 45 ~ 55% by weight of low-melting polyester and 20 ~ 30% by weight of two kinds of ordinary polyester of different fineness, and several webs of different fiber orientation It relates to a polyester sound-absorbing material characterized in that the structure is subjected to a combination of hot pressing and transfer processing after lamination and needle punching.

Description

Polyester Sound Absorbing Material Manufacturing Method {PRODUCING METHOD OF POLYSTER ABSORPTIVE MATERIAL}

The present invention relates to a polyester sound-absorbing material used in soundproof walls for buildings (meeting rooms, hotels, music performance rooms, etc.), automobiles and roads. More specifically, the sound-absorbing performance is improved by using polyester fibers widely used in clothing and industrial applications. The present invention relates to a method for producing a polyester sound-absorbing material which is excellent, does not need protective equipment for construction, is convenient for transportation and construction, and improves aesthetics with improved surface smoothness.

As mechanical civilization develops, noise generated by various means of transportation and industrial machines causes serious pollution problems. The best way to solve the noise pollution known up to now is to reduce the noise generated from the noise source, which requires mechanical improvement. However, the range of improvement is practically limited by interlocking with operating conditions, operating cost and efficiency.

Therefore, in addition to the method of reducing the noise generated from the noise source, a sound absorbing material using a porous material is widely known to solve the noise problem by the sound absorption or blocking of noise propagation. As porous materials currently used as sound absorbing materials, glass fibers, rock wool and synthetic resin foams are known. However, in the case of a sound absorbing material made of glass fiber or rock wool, the glass fiber may cause air pollution due to generation of fine particles by weathering when exposed to the air, and it is difficult to reuse and incinerate during disposal. In addition, there is a risk of breakage during transport and handling due to the weak bonding force between the fibers, and the protective equipment is required because the particles are in contact with the skin due to sweat or moisture of the operator during construction, causing itching, allergies.

The sound absorbing material of U.S. Patent No. 5,304,415 contains the porous particles such as calcium silicate silica and mica in the polyester nonwoven fabric to increase the sound absorption in the low frequency region, but the sound absorption performance is only required when the fine particles are located in the pore area through which sound waves pass. It has a disadvantage that can increase and also has a disadvantage that the sound absorption performance is deteriorated after a certain period of time because the particles are not easily fixed and easy to escape.

In addition, the sound absorbing material of U.S. Patent No. 4,056,161 compensates for these disadvantages by coating a polyvinyl chloride cover on one side of the existing sound absorbing material of glass surface to prevent sagging of the sound absorbing material due to ease of handling during construction and moisture in rainy weather. There is a drawback that the sound absorption decreases due to sound reflection and the manufacturing price increases when soundproofing.

On the other hand, in the construction of sound-absorbing facilities in public places such as theaters, the use of flame-retardant finish fabrics on glass surface compression boards or urethane foams, which have been mainly used in the past, has been used as part of cost reduction and product diversification. There are various ways to carry out sound absorption and finishing at the same time without finishing fabric. For the suitable product, securing the flame retardant level 2 in the small-law method and supplementing the aesthetics is required as the most important prerequisite.

The present invention uses the transfer printing method used in the manufacture of general Frank Card to improve the smoothness of the poor surface of the existing polyester sound-absorbing board, improve the unevenness of the surface color by dyeing the yarn, and utilize the characteristics of each application. It is an object of the present invention to provide a polyester sound-absorbing material that can be transferred to more various places.

It is another object of the present invention to provide a polyester sound absorbing material having excellent sound absorption effect, convenient handling and construction, as well as improved smoothness and aesthetically superior advantages.

1 is a cross-sectional view showing an example of a sound absorbing material according to the present invention.

Figure 2 is a block diagram of the sound absorption rate measurement system of the polyester sound absorbing material of the present invention.

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

1: polyester layer 2: printed layer

3: small reverberation chamber 4: large reverberation chamber

5: sample

The present invention is a method of achieving the above object by mixing a low melting point polyester fiber as a fiber fixing agent in a certain ratio with the general polyester fiber, and in stacking the mixed polyester fibers in a plurality of layers of web orientation Disclosed is a polyester absorbing material characterized by laminating and performing a hot press process to give a smoothness to a polyester layer and to print a pattern of a live image and a photograph on a surface or a surface in order to improve aesthetics.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention is made of 45 to 55% by weight of low-melting polyester fibers having a fiber thickness of 3 to 10 deniers and a fiber length of 30 to 80 mm, and general polyester fibers having a fiber length of 10 to 15 deniers and a fiber length of 51 to 81 mm. Surface after lamination and middle punching of several webs with different fiber orientations of polyester fiber composed of 20-30% by weight of polyester fiber composed of ~ 30% by weight and fiber thickness of 3 to 5 denier and 51 to 81 mm Heat-press processing under the conditions of temperature of 90-150 degreeC and the pressure of 1.1-4.9 kg / cm <2> and insert the polyester layer 1 which gave flatness, and the transfer printing paper at the time of the hot press process, and print the pattern of a real picture and a photograph. It is characterized by consisting of one printed layer (2).

When the thickness of the low-melting polyester fiber used as the fiber fixative in the present invention is less than 3 denier, Nep occurs due to poor carding property during web manufacturing, and when it exceeds 10 denier, the sound absorbency of the sound absorbing material is deteriorated. If the content of the low-melting polyester is less than 45% by weight, the durability and the strength of the web structure decrease due to the lack of bonding strength in the sound absorbing material, and the problem that the print processing becomes difficult occurs and exceeds 55% by weight. As the smoothness of the surface increases, it is difficult for noise to penetrate into the sound absorbing material, resulting in a defect that the sound absorption rate decreases. Thus, low-melting polyester fiber is 45 to 55% by weight, fineness is 10 to 15 denier, and the fiber length is 51 to 81 mm. 20-30% by weight of ordinary polyester fibers with ester fibers and fineness of 3 to 5 deniers and 51 to 81 mm of fiber length It is preferable to mix.

On the other hand, in the print processing step which is one of the features of the present invention, it is preferable that the pattern or the photograph 1 to 4 degrees of the actual yarn printed on the back surface or the back surface.

Hereinafter, the present invention will be described in more detail with reference to Examples.

<Comparative Example 1>

Standard card is made by mixing 40wt% of ordinary polyester fiber with diameter of 5 denier and 76mm length, 25wt% of ordinary polyester fiber with diameter of 15 denier and length of 76mm, and 50wt% of low melting point polyester fiber with diameter of 3 denier and 76mm length Lamination | stacking was carried out and the polyester sound absorption material of density 200K (kg / m <3>) and thickness 9T (mm) was manufactured. Thus, after producing the polyester absorbent material of the subject, the surface of the surface or the surface is printed on the surface of the live-action according to the characteristics of the building by printing the printing color at 4 degrees with low pressure (1kg / ㎠) heat press at 90 ° C to make the surface smooth. A polyester sound absorbing material with improved appearance and improved aesthetics was prepared. Table 1 shows the sound absorption and physical properties.

<Example 1>

After manufacturing the polyester sound absorbing material of the main subject as in Comparative Example 1, the pattern of the live-action according to the characteristics of the building is printed on the surface or the surface by heat press under the temperature of 120 ℃ and the pressure of 1.1kg / ㎠, The printing color is a polyester sound absorbing material using the color ink of 4 degrees to improve the smoothness of the surface and aesthetic appearance to the finishing material was prepared, the sound absorption properties and physical properties are shown in Table 1.

<Example 2>

As in Example 1, the polyester sound absorbing material of the subject was manufactured, and then printed on the surface or the surface of the photorealistic pattern and photographs according to the characteristics of the building by thermal printing under a temperature of 120 ° C. and a pressure condition of 4.9 kg / cm 2. A polyester sound absorbing material was prepared to improve the smoothness of the surface and improve the aesthetics of the finish. Table 1 shows the sound absorption and physical properties.

<Comparative Example 2>

After manufacturing the polyester absorbent material of the main subject as in Comparative Example 1, the surface and surface of the surface of the real-life pattern and photographs that meet the characteristics of the building are transferred and printed by heat press under 150 ℃ temperature and 1kg / ㎠ pressure condition. To improve the smoothness and improve the appearance of the finished polyester sound absorbing material was prepared, the sound absorption properties and physical properties are shown in Table 1.

<Comparative Example 3>

After the polyester sound absorbing material of the subject is manufactured as in Comparative Example 1, the surface of the surface or surface is transferred by thermal printing under the condition of 150 ℃ and 5kg / ㎠ pressure to print the pattern and photograph of the live action that meets the characteristics of the building. A polyester absorbing material was prepared, which improved smoothness and improved aesthetics as a finishing material.

The sound absorption rate measurement and the reverberation time measurement of the suction material obtained in the above Examples and Comparative Examples were carried out by the following method.

Sound absorption rate measurement method of sound absorption material

Sound absorbance measurement method was measured based on the "Method of measuring sound absorption in reverberation chamber" of Korean Industrial Standard KS F 2805.

Sample and installation method

Sample area; 12 m 2, density: 20 K (kg / m 3), thickness; A sample of 80T (mm) was installed in the center of the reverberation chamber floor at least 1m away from the reverberation chamber wall.

Reverberation time measurement

-The measurement of the reverberation time was carried out with 25 reverberation points in the reverberation room, and the total number of measurements per frequency is as follows.

-Calculation of reverberation chamber sound absorption rate: The reverberation chamber sound absorption rate is calculated from the average value of reverberation time according to the following formula.

= (55.3 V / cS) × (1 / T1-1 / T2)

α: reverberation chamber method

V: Reverberation chamber volume (㎥)

T1: Reverberation time (s) with sample

T2: Reverberation time (s) without sample

S: sample area (㎡)

c: Sound velocity in air (m / s) c = 331.5 + 0.6t

t: temperature of air (℃)

As confirmed in the above examples and comparative examples, the polyester sound absorbing material prepared according to the present invention is excellent in sound absorption effect, convenient handling and construction, as well as improving the smoothness of the surface and for use as a sound absorbing material for various finishes in the transfer method Due to the pattern of the due diligence and pictures can be printed to improve the aesthetics.

Claims (2)

45 to 55% by weight of low melting polyester fiber having a fiber length of 3 to 10 denier and having a fiber length of 30 to 80 mm, and 20 to 30 weight of general polyester fiber having a fineness of 10 to 15 denier and a fiber length of 51 to 81 mm It is composed of 20-30% by weight of general polyester with% and fineness of 3 to 5 denier and 51 to 81 mm of fiber length, and after lamination and needle punching of several webs with different orientations of fibers, the temperature is 90 to 150 degrees on the surface. Range and pressure 1.1 to 4.9 kg / ㎠ range of polyester layer (1) in the form of heat press processing, and transfer printing paper during the heat press processing to insert a pattern or photo of the real picture on the surface or surface A polyester sound-absorbing material, comprising a print layer (2) subjected to print processing. The polyester sound-absorbing material according to claim 1, wherein the printing process is a print of a pattern or a photograph of the actual yarn between 1 and 4 degrees.