KR20150085912A

KR20150085912A - Manufacturing method and apparatus for foam

Info

Publication number: KR20150085912A
Application number: KR1020140005871A
Authority: KR
Inventors: 신동호
Original assignee: 신동호
Priority date: 2014-01-17
Filing date: 2014-01-17
Publication date: 2015-07-27

Abstract

The present invention relates to an apparatus and a method for manufacturing a functional foam foam comprising a functional material applying unit 60 for applying a functional material 54 to a surface of a foam foam 52, A thermocompression means 70 for thermocompression bonding the foaming foam 52 having the functional material 54 coated on its surface through the functional material applying means 60, And a cooling means (80) provided in front of the foam foam in the traveling direction of the foaming foam to cool the functional foam foam (56) that has passed through the thermocompression means (70). The thin foam foam of good quality The present invention relates to an apparatus and a method for manufacturing a functional foamed foam.

Description

Technical Field [0001] The present invention relates to a manufacturing method and apparatus for foam,

The present invention relates to an apparatus and a method for manufacturing a functional foam, and more particularly, to a method of manufacturing a functional foam by applying a functional material after foaming and thermo compression molding, The present invention relates to an apparatus and a method for manufacturing a functional foamed foam capable of satisfactorily treating a substance so as to obtain sufficient functionality.

Foamed foam, especially polyurethane foam, is produced by reacting a polyisocyanate with a polyol in the presence of various additives. It is light and has excellent heat insulation properties and is widely used in various fields such as automobiles, houses, and electronics. Recently, Products that add functionality such as flame retardance, strength reinforcement, and light reflection prevention to the above polyurethane foam have been developed.

However, the above-mentioned polyurethane foam is formed by foaming polyol and isocyanate as main components, and there is a limit in the addition of functional materials, such as a change in foaming ratio when a functional material is added, so that a polyurethane foam is usually prepared in a desired form, The functional polyurethane foam is prepared by separately adding the material to the post-process.

As such a method for producing a functional polyurethane foam, compression molding, quantitative discharge molding, film adhesive molding and the like are used.

In the compression molding method, the foam 10 produced as shown in FIG. 1 is compressed by the press 16 using the molds 12 and 14 having a desired size and shape, Productivity, high loss (LOSS), and thickness inaccuracies.

2, the foaming liquid 24 is discharged by a predetermined amount between a plurality of films 22 continuously fed, and the foaming liquid 24 is foamed to adjust the width of the foaming foam There is a limitation in the products to be produced, and when the amount of discharge is slightly changed, there is a problem that the defective thickness is high or the performance of the polyurethane foam is deteriorated because the foam cell is not constant, The total thickness of the polyurethane foam with the film is not less than 2.5 mm.

3, the function of the polyurethane foam 32 itself is not improved but depends only on the functionality of the film 34 adhering to the surface of the polyurethane foam 32. Therefore, To prevent scratches on the surface of the foam, a separate process for firmly adhering the film is required, such as forming a scratch on the surface of the foam, so that the manufacturing process is complicated and the production cost is increased. Since the film 34 is attached to the polyurethane foam 32 which is compression molded after foaming, the thickness of the film 34 on each of the front and rear faces is at least 0.5 mm, and the total thickness of the polyurethane foam with the film is set to 2.5 mm or less There was a problem that it could not be produced.

It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to solve the above-mentioned problems by providing functionalities after foam foaming to enable functioning of foam foam to be maximized, So that separation of the material does not occur.

Another object of the present invention is to provide a continuous process for continuously expanding a functional foam by continuously applying a functional material to a foam foam.

According to an aspect of the present invention, there is provided a method of manufacturing a foamed foam, including: applying a functional material to a surface of a foamed foam; passing a foamed foam coated with the functionalized material through a thermocompression means, And a cooling step of cooling the functional foamed foam subjected to the thermocompression process.

Another feature of the present invention resides in that it comprises a means for applying a functional material to a surface of a foamed foam, a means for thermocompression bonding a foamed foam having a surface coated with a functional material through the functional material applying means, And a cooling means for cooling the functional foam foam which has passed through the compression means.

The thermocompression means includes a plurality of rotating rollers arranged along a moving direction of the foamed foam so that the foamed foam and the functional material can be sufficiently combined with each other, And a belt having a function.

According to the present invention having such a constitution as described above, since no substance other than the substance required for foaming is added during the foaming process of the foam foam, the physical properties of the foam foam are not lowered and the functional substance is formed on the surface of the foam foam, The effect of the material is maximized and the properties of the functional material are not changed, thereby maximizing the characteristics of the functional foam foam.

In addition, since the process of adhering the film is excluded, continuous production is possible, mass production is possible, productivity is improved, production cost is reduced, and the foamed foam and the functional material are integrated so that the film can be processed to a very thin thickness, There is an effect that the foamed foam can be produced.

1 to 3 are views showing a production example of a conventional functional foamed foam
4 is a cross-sectional view of a conventional functional foam foam;
5 is a drawing showing an example of production of a functional foamed foam according to the present invention
6 is a cross-sectional view showing a foamed foam after foaming
7 is a cross-sectional view of the functional foam according to the present invention

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

5 is a view showing an example of manufacturing a functional foam according to the present invention. In the method of manufacturing a functional foam according to the present invention, the functional material 54 is coated on the surface of the foam foam 52, (Pressure: 100 kg / cm 2 to 200 kg / cm 2, heating temperature: 150 to 220 ° C.) and the skin layer formed by the functional material fixing and the functional material are thermally compressed And a cooling process (cooling temperature -8 ° C to 0 ° C) for cooling the functional foam foam 56 subjected to the thermocompression process. Through this process, the functional material is compressed and heated, And is heated and cooled to form a skin layer having a smooth surface and a dense texture.

The manufacturing apparatus of the present invention for carrying out the above manufacturing method comprises a functional material applying unit 60 for applying a functional material 54 to the surface of a foamed foam 52 largely foam molded, (70) for thermally compressing the foamed foam (52) coated with the functional material (54) on the surface of the functional foamed foam (56) through the thermocompression means (70) (80).

The functional material applying unit 60 may be a spraying unit for spraying the functional material 54 onto the surface of the foam foam 52 or a functional material discharged to the surface of the foam foam by the discharging unit may be uniformly applied A knife coater for uniformly applying a functional material, or a known application means such as a brush provided on the outer circumference of the application roller. In the embodiment of the present invention, A coating roller 64 is provided in front of the spraying means 62, that is, in front of the advancing direction of the foamed foam, and the spraying means 62 and the application roller 64 are used together. So that the functional material sprayed on the foamed foam 52 is uniformly applied onto the foamed foam 52 by the application roller 64.

The thermo-compression bonding unit 70 is formed of a foaming foam 52 so as to form a skin layer of the functional foam foam 56 formed by heat-immobilization of the functional material 54 while sufficiently bonding the foam foam and the functional material, A plurality of rotating rollers 72 having a predetermined length along the traveling direction of the foamed material and the rotating roller 72 to rotate the rotating rollers 72 to contact the functional material to fix the functional material on the surface of the foamed foam while forming the skin layer, And a belt 74 for pressing the foamed foam, and the rotary roller 72 or the belt 74 is provided with heating means.

The degree of pressing is controlled in accordance with the interval between the rotary rollers 72 constituting the thermocompression means 70 and the plurality of rotary rollers support the pressing and heating belt 74, And the surface is smoothed. Heating of the foamed foam is accomplished by installing hot wire on the belt 74 or passing the hot medium through a rotating roller, and forming the belt from a material having excellent thermal conductivity.

The cooling means 80 is rotatably provided at the tip of the thermocompression means 70 and is composed of a cooling roller into which the refrigerant is injected, whereby the functional material having passed through the thermocompression means 70 is coated The foam foam 56 is cooled.

The functional material applying means, the thermo-pressing means and the cooling means are fastened to a body (not shown) constituting the functional foamed foam manufacturing apparatus of the present invention, and the foamed foam is rotated by rotation of a plurality of rollers And a plurality of conveying rollers may be further provided in the manufacturing apparatus to facilitate the conveyance.

When the functional material is to be applied on both sides, the functional material applying means, the thermo-compression means and the cooling means may be provided in the same manner in the same manner. In the case of applying the functional material only on one side, Only one of the rotating rollers and the belt constituting the thermocompression means need not be heated.

According to the present invention configured as described above, the functional material 54 is applied to the surface of the foam foam 52 through the functional material applying unit 60 to a predetermined thickness, and thereafter, And the functional material is integrated with the foamed foam to form a skin layer on the surface thereof and is cooled while passing through the cooling means 80. Since the process is continuously performed, the functional foamed foam is continuously .

6, the foamed foam 52 before passing through the thermocompression means 70 has a thickness of 10 to 50 mm. However, after passing through the thermocompression means 70, the foamed foam 52 has a thickness 0.5 to 5 mm, and it becomes very thin.

Accordingly, the foaming foam according to the present invention has a maximum rebound resilience and a cell function, and can not be produced at a thickness of less than 2.5 mm in the conventional production method. However, according to the present invention, the foaming foam can be mass produced at less than 1 mm.

The functional foam (2T) according to the present invention has a higher density and a lower thermal conductivity than conventional functional foam (25T) as shown in Table 1, in addition to surface skin formation and functional layer formation required by the industry, (Tensile Strength), elongation (Elongation), compressive strength (Strength), dimensional stability, closed cell contents, ILD (Indentation Load Deflection), rebound resilience, , Tear Strength and Compression Set, the functional foam 2T of the present invention is far superior to the conventional foam foam.

52: foamed foam 54: functional material
56: Functional foamed foam 60: Functional material application means
70: thermocompression means 80: cooling means

Claims

A process of applying the functional material 54 to the surface of the foamed foam 52,
A thermocompression process for thermocompression bonding the foams 52 coated with the functional material 54 to fix the functional materials simultaneously,
And a cooling step of cooling the functional foam foam 56 after the thermocompression process.

A functional material applying unit 60 for applying the functional material 54 to the surface of the foamed foam 52,
A thermocompression means 70 for thermocompression bonding the foam 52 coated with the functional material 54 on the surface through the functional material applying means 60 is provided in front of the foam traveling direction of the functional material applying means 60 ),
And a cooling means (80) installed in front of the foam advancing direction of the thermocompression means (70) for cooling the functional foam foam (56) which has passed through the thermocompression means (70) Foamform manufacturing apparatus.

The thermo-compression device according to claim 2, wherein the thermocompression means comprises a plurality of rotating rollers provided along the traveling direction of the foam, a belt contacting the functional material while being rotated by the rotating rollers, (74), and the heating roller is provided on the rotating roller (72) or the belt (74).