KR20020051337A - Apparatus and Method for Manufacturing Sound-Absorption and Sound-Exclusion Agent by Calendar - Google Patents

Abstract

PURPOSE: A method and an apparatus for manufacturing a sound absorbing and shielding member are provided to reduce the manufacturing cost by improving the quality of material through mixing raw material with compound. CONSTITUTION: An apparatus for manufacturing a sound absorbing and shielding member includes a mixer(21) into which fuel with filling agent is introduced. An extruder(22) is provided to melt mixed material at the high temperature. A mixing roller(23) heats the melting material so as to make complete synthetic rubber. A calendar(24) is provided to adjust the width and thickness of synthetic rubber by rolling synthetic rubber. Raw material wound around a raw material roll(20) is soften by a heating drum(25) which makes contact with raw material. A forming roll(26) and an embossing roll(27) forms a protrusion of rubber and allow synthetic rubber to be bonded to the raw material. A cooling roller(18) is provided to maximize the adhesive force between the raw material and synthetic rubber.

Description

Apparatus and Method for Manufacturing Sound-Absorption and Sound-Exclusion Agent by Calendar}

The present invention relates to the production of sound absorbing and insulating materials for automobiles, and more particularly, it is possible to control the desired shape to the appropriate thickness (thickness) as well as the process of bonding the fiber fabric and synthetic rubber in the production process of various widths The present invention relates to a manufacturing apparatus and a method for manufacturing a sound absorbing and insulating material for automobiles using a calendar, which is capable of a wide width, and improves materials by mixing raw materials and blends.

It has the problems of environmental pollution and harmful toxicity to the human body of the conventional car-mat made of PVC, and the method manufactured using synthetic rubber is introduced, which not only improves cost reduction and productivity, but also peels off the existing adhesive force. Its high strength can improve its quality, and it is expected to continue to be spotlighted as a substitute for PVC.

In addition, conventionally, after removing the oil with a primer or other chemicals, the pad is applied evenly by spraying the bond on the upper surface, and the carpet is attached. It has become a major factor in poor working environment.

1 is a block diagram showing a manufacturing apparatus by a conventional T-die method.

In the figure, reference numeral 11 denotes a mixing and extruder of raw materials, reference numeral 13 denotes a T-die having a predetermined clearance space, reference numeral 15 denotes a rubber roll for support, reference numeral 17 denotes an embossing roll forming protrusions, and reference numeral 18 denotes a temperature. Is a cooling roll for lowering the plastic deformation to complete the plastic deformation, and reference numeral 19 is a winder for winding the product.

Accordingly, when the raw material of synthetic rubber is introduced, a plate-like sheet is generated while passing through the T-die 13, and the shape of the product is provided through the embossing roller 17, and the molding roller is maintained in the state of being formed in the cooling roller 18. The winding on the winder 19 is performed continuously.

However, the T-die manufacturing method using synthetic rubber is difficult to process the desired thickness (thickness), and the productivity decreases due to the low operating speed during production, and the adhesive strength is decreased when the carpet and synthetic rubber are bonded. This is difficult and high production cost due to excessive input of raw materials.

Therefore, an object of the present invention is to solve the above problems, it is possible to control the desired shape as well as the thickness at the time of adhesion of the fiber fabric and synthetic rubber, and the width is possible in the production process of various widths and Provided are an apparatus and a method for manufacturing a sound absorbing and insulating material for automobiles using a calendar that can reduce costs by improving raw materials and blends.

1 is a block diagram showing a manufacturing apparatus by a conventional T-die method;

2 is a block diagram schematically showing a manufacturing apparatus according to the method of the present invention.

Explanation of symbols on the main parts of the drawings

18: cooling roll 19: winder

20: fabric roll 21: compounding machine

22 extruder 23 mixing roller

24: calendar 25: heat drum

26: forming roll 27: embossing roll

In order to achieve the above object, one aspect of the present invention is a device for producing sound absorbing and sound insulating materials using synthetic rubber as a main raw material: a mixer in which a raw material is added to the synthetic rubber fillers, such as hardeners or stabilizers, stearic acid and other mixtures (21) ); An extruder 22 which injects and melts the mixed material at a high temperature; A mixing roller 23 which warms the molten material and matures the complete synthetic rubber; A calendar 24 for rolling the aged synthetic rubber to match a width and a thickness; Thermal drum 25 for softening by rubbing the fabric in the fabric roll 20; A forming roll 26 and an embossing roll 27 for performing rubber-like protrusion forming and adhesion to a fabric; And it characterized in that it comprises a plurality of cooling rollers 18 to maximize the adhesive force of the synthetic rubber bonded to the fabric.

In addition, another aspect of the present invention is a method for producing a sound absorbing and sound insulating material using synthetic rubber as a main raw material: adding a hardener or stabilizer, a filler of stearic acid and other mixtures to the synthetic rubber and mixed for 3-5 minutes at 150-180 ℃ Doing; Melting the mixed material at a temperature of 150-180 ° C .; Aging the molten material under complete synthetic rubber at 130-150 ° C .; Rolling the aged synthetic rubber in multiple stages of 120-130 ° C. and 130-150 ° C., respectively, to match width and thickness; Rubbing the fabric to 250-300 ° C. to soften; And maximizing the adhesive force by performing a cooling of the rubber-like protrusion shape and the fabric at a pressure of 2-5 kg / cm 2 and cooling the fabric.

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the present invention in detail, Figure 2 is a block diagram schematically showing a manufacturing apparatus according to the method of the present invention.

The present invention suppresses the discharge of toxic substances such as dioxins by carpets made of conventional PVC, using synthetic rubber or synthetic resin, which is harmless to the human body, and improves the quality of the sound absorbing and insulating material for automobiles by increasing the adhesive strength with textile fabrics. .

The mixer 21 of the present invention has a heater and a temperature control means as a raw material to which a filler, such as hard coal or stabilizer, stearic acid or other mixture, is added to the synthetic rubber. As the mixer 21, a short-variable mixer for melting raw materials and a mixer for mixing are arranged.

The extruder 22 is provided with a heater and a temperature control means to melt the injected and mixed material at a high temperature. When the raw material is introduced into the extruder 22, the continuous melting is made while passing through the screw.

The mixing roller 23 arranges at least the same configuration in a plurality of primary and secondary, and performs the function of heating the molten material to an appropriate temperature range to ripen the complete synthetic rubber.

The calendar 24 selects a multi-step type to match the width and thickness by rolling the aged synthetic rubber. The plurality of rolls provided in the calendar 24 allows the respective temperatures to be maintained differentially. The conventional rubber processing method, such as the press method or the T-die method, has low productivity, while the method using the rolled calendar 24 according to the present invention improves productivity and greatly reduces the production cost.

At this time, in the present invention, the fabric roll 20 for supplying the fabric to the downstream side of the calendar 24 is installed, and the thermal drum 25 for softening the fabric by rubbing the fabric is provided downstream of the fabric roll 20. The thermal drum 25 is provided with a heater and a temperature control means to soften the fabric to improve adhesion.

The forming rolls 26 and the embossing rolls 27 form rubber-like protrusions and adhere to the fabric. Forming roll 26 can be produced at a low price irrespective of the material there is an economically advantageous side compared to other methods. The embossing roll 27 is made of a silicon material and has a structure of forming a desired shape as well as turning on one surface of the rubber at the same time as the fiber fabric and the synthetic rubber are bonded. The embossing roll 27 is provided with a plurality of vent holes so that the air is smoothly discharged during protrusion molding. Accordingly, liquid and air such as water on the embossing surface do not cause chemical adsorption and physical adsorption between the rubber raw materials when the embossing roll 27 passes, so that the protrusion shape is well formed.

Cooling roller 18 is composed of a plurality of rolls or drums to maximize the adhesion of the synthetic rubber bonded to the fabric. The cooling roller 18 may adjust the cooling temperature by circulating the cooling water.

According to another aspect of the present invention, a method of applying the apparatus of FIG. 1 is proposed, and a hardener or stabilizer, a filler of stearic acid and other mixtures is added to the synthetic rubber and mixed at 150-180 ° C for 3-5 minutes. For example, it is appropriate to mix 800 g, 300 g, and 7 kg of plasticizer stearic acid, a stabilizer, and a pigment with respect to 60 kg of raw rubber and 60 kg of hard coal, respectively. If the mixing ratio is out of the mixing roller 23, the material does not fall, there is a high possibility of causing problems in various processes.

The mixed material is then melted to a temperature of 150-180 ° C., the molten material is aged with complete synthetic rubber under 130-150 ° C., and the aged synthetic rubber is 120-130 ° C. and 130-150 ° C., respectively. Rolling in multiple stages to match the width and thickness, and smooth the fabric by rubbing to 250-300 ℃, and the rubber-like protrusions and the adhesion of the fabric with a pressure of 2-5㎏ / ㎠ and cooled to bond The process to maximize the. The process of molding the sound absorbing and insulating material or the pad is continuously performed while arranging a plurality of rolls continuously and molding the thermoplastic resin and carpet.

In the action according to the present invention, the hard rubber or stabilizer, stearic acid and other mixtures of fillers are added to the synthetic rubber, added to the mixer 21 and mixed for 3 to 5 minutes, and then mixed into the extruder 22 at 150 to 180 ° C. The prepared material to a high temperature. The half-barrier mixer in the mixer 21 melts for 3-4 minutes at 150-180 degreeC, and it mixes for about 2 minutes in a blender. The molten material was first aged at 130-150 ° C. in the mixing roller 23 in the first half after the above two processes, and again aged at 130-150 ° C. in the mixing roller 23 in the second half. Let's do it.

Next, the composite rubber is rolled into the first half of the calendar 24 and aged at 120 to 130 ° C., then rolled between the second half rolls, and then rolled again to 130 to 150 ° C. to match the width and thickness (thickness). Synthetic rubber that fits the width and thickness is injected between the forming roll 26 and the embossing roll 27 of the silicon material, wherein the fabric in the fabric roll 20 is rubbed on the thermal drum 25 at 250-300 ° C. After softening the fabric, it is put between the forming roll 26 and the embossing roll 27 to perform protrusion and other shape molding and adhesion to the fabric. At this time, the pressure is somewhat different depending on the degree of back to about 2-5㎏ / ㎠.

Finally, the plurality of cooling rollers 18 are passed in order to maximize adhesion between the fabric and the synthetic rubber. Next, the molded and adhesively cooled synthetic rubber is wound on the required roll using the continuous winder 19. Winder 19 is suitable for the winding speed of about 5-7m per minute.

As described above, the present invention is a method of manufacturing using synthetic rubber, which significantly lowers the cost compared to other methods, maintains high productivity, and recycles only a part of the scraps generated during processing of the finished product as well as scraps generated during operation. This is possible, but the present invention has the advantage that the whole amount can be reproduced. When more than 60% of synthetic resin is used as a main raw material, the recycling effect is great.

The present invention can be applied to the manufacture of various sound absorbing and insulating mats and soundproofing materials for ceilings, floors, door mats, and in any case there is no significant difference in the characteristics of improving productivity and quality of the finished product.

According to the above configuration and action, the present invention can control the desired shape to the appropriate thickness (thickness) as well as the process of the adhesion of the fabric and synthetic rubber, can be a wide width in the production process of various widths by mixing the raw materials and the blend There is an effect to reduce the cost by improving the material.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

Claims (2)

In a device for producing sound absorption and sound insulation using synthetic rubber as a main raw material: A mixer 21 into which a raw material to which fillers, such as hard or stabilizing agents and stearic acid, is added to synthetic rubber is added; An extruder 22 which injects and melts the mixed material at a high temperature; A mixing roller 23 which warms the molten material and matures the complete synthetic rubber; A calendar 24 for rolling the aged synthetic rubber to match a width and a thickness; Thermal drum 25 for softening by rubbing the fabric in the fabric roll 20; A forming roll 26 and an embossing roll 27 for performing rubber-like protrusion forming and adhesion to a fabric; And Apparatus for manufacturing a sound absorbing and insulating material for automobiles using a calendar, characterized in that it comprises a plurality of cooling rollers 18 for maximizing the adhesive strength of the synthetic rubber bonded to the fabric. In the method of manufacturing sound absorption and sound insulation using synthetic rubber as a main raw material: Adding a hardener or stabilizer, a filler of stearic acid and other mixtures to the synthetic rubber and mixing at 150-180 ° C. for 3-5 minutes; Melting the mixed material at a temperature of 150-180 ° C .; Aging the molten material under complete synthetic rubber at 130-150 ° C .; Rolling the aged synthetic rubber in multiple stages of 120-130 ° C. and 130-150 ° C., respectively, to match width and thickness; Rubbing the fabric to 250-300 ° C. to soften; And Method for producing a sound absorbing and insulating material for automobiles using a calendar comprising the step of performing the molding of rubber-like protrusions at a pressure of 2-5㎏ / ㎠ and the bonding with the fabric and maximizing the adhesive force by cooling. .