JPH0891864A - Rock wool product manufacturing method - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve production efficiency by balancing production of rock wool mat with a raw material dissolving device-fiberizing device-cotton collecting device and production of a molding process for finishing the rock wool mat into a product. To provide a rockwool product having excellent performance by arranging a beneficial layer on the product itself. [Structure] In a method for producing rockwool products by melting raw materials, making them into fibers, applying a binder, and supplying layered rockwool formed by a cotton collecting device to a molding / processing facility, before hardening the binder A method for manufacturing rock wool products in which the layered rock wool is divided by a slicer in the vertical direction and supplied to molding and processing equipment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating material for construction made of rock wool and a method for producing rock wool molded articles such as industrial heat insulating tubes.

[0002]

2. Description of the Related Art Conventionally, the continuous production of rock wool molded products such as building heat insulating materials and industrial heat insulating tubes made of rock wool has been carried out by a set of a raw cotton line consisting of a raw material melting device, a fiberizing device and a cotton collecting device and a plurality of raw cotton lines It consists of molding and processing equipment. The felt-like rock wool collected in the raw cotton line is cut and divided in the width direction according to the number of molding and processing devices to be supplied, or once the felt-like rock wool is wound up and kept, it is used again in the molding and processing device. Was being supplied. Therefore, if you try to widen the molding width of the cotton collection device according to the number of molding and processing devices, a large amount of equipment cost will be required,
Since the equipment will also be large, depending on the type of rock wool molded product, the large equipment will be uselessly operated. In addition, if there is a difference in processing capacity among multiple processing equipment, it is necessary to set the layer thickness of rock wool according to the lowest processing capacity, which means the dissolution of raw materials and the amount of fiberization. Will be narrowed down and adjusted, resulting in lower production efficiency and higher cost. Furthermore, it is not easy to stack rock wool with a uniform thickness over a wide cotton collection width,
As a result, quality problems such as uneven density of the molded product are caused. There is a problem such as. In addition, there is no rock wool product consisting of multiple layers, each with its own characteristics.
There is a method to attach rock wool molded products with their respective characteristics, but it is troublesome because it is necessary to make molded products separately and then to bond them together, and the cost is high, and the adhesive layer is partially formed. The peeling and the properties of the adhesive layer itself may be a problem.

[0003]

DISCLOSURE OF THE INVENTION The present invention solves the above problems and is an excellent lock capable of efficiently manufacturing a building insulation material and an industrial heat insulating tube made of rock wool and corresponding to various kinds. An object is to provide a method for manufacturing a wool molded product.

[0004]

[Means for Solving the Problems] The above problems include a layered rock wool formed by melting a raw material such as blast furnace slag or basalt, forming a fiber, coating a binder, and forming by a cotton collecting device.
This is solved by a method for manufacturing a rockwool product in which the binder is vertically divided by one or more slicers before being cured.

The layered rock wool in the present invention is made of blast furnace slag or basalt as a raw material, made into fibers by a known manufacturing method, coated with a binder, and laminated by a cotton collecting device.

The binder used in the present invention includes thermosetting resins such as phenol resin and melamine resin, thermoplastic resins such as vinyl chloride resin and polyethylene terephthalate resin, inorganic binders such as cement, gypsum and water glass,
Fiber binders such as polyethylene fibers and polypropylene fibers. If necessary, a silane coupling agent and a curing agent are used. The amount of the binder added is 1 to 25% by weight of rock wool in terms of solid content.

In the present invention, the slicer for vertically dividing the layered rock wool before curing the binder is a cutting tool used for cutting conventional saw blades, flat teeth or other band saws, or rotary teeth. Can be used.

[0008]

The following is a schematic description of an example of the manufacturing method of the present invention,
FIG. 1 shows a laminated mat 3 in which a rock wool single-layer mat 1 which is made into fiber by a known manufacturing method using blast furnace slag or basalt as a raw material, is coated with a binder, and is swabbed by a benzrum conveyor 2 is laminated. And the mat 3
Is a method for producing a rockwool product, in which the product is divided in parallel with the laminating surface by a band saw 4 and branched and conveyed to a molding / processing facility by a belt conveyor to be a product. In addition, FIG. 2 shows that the laminated mat 3 is divided by the band saw 4 in parallel with the laminating surface, the upper layer is compressed with a roller to increase the density, and then laminated with the lower layer again and conveyed to a molding / processing facility for integration. It is a method of manufacturing a rock wool product that is produced as a product. As described above, according to the production method of the present invention, the required properties can be imparted and integrated in units of layers divided in parallel to the laminated surface by increasing the density, applying a chemical, or the like. Thus, a rockwool product having useful layers can be obtained.

[0009]

【Example】

[Example 1] As shown in FIG. 1, a raw material dissolving device-fiberizing device-cotton collecting device was operated to apply 3% by weight (solid content) of a phenol resin to the weight of rock wool during fiberizing,
10 layers of the collected rock wool mat 1 having a thickness of about 10 mm and a density of about 10 kg / m ³ are laminated by a benzrum conveyor 2 to a thickness of 100 mm and a density of about 10 kg / m.
³ of a laminated mat 3, laminate mat 3 Bandosou (Co. Andoso manufactured length 7m, width 12 mm, stainless steel, speed 10 m / sec) 4 in the upper layer (thickness 60 mm,
The density is about 10 kg / m ³ ) and the lower layer (thickness 40 mm, density about 10 kg / m ³ ) is divided into two, and the upper layer is fed to the thick rock wool heat insulation tube manufacturing equipment by conveyors 5 and 6, and the inner diameter is 165 mm, A 50 mm thick heat insulating cylinder was manufactured, and the lower layer was supplied to a small rock wool heat insulating cylinder manufacturing facility by the conveyor 7 to manufacture a heat insulating cylinder having an inner diameter of 114 mm and a thickness of 25 mm.

[Embodiment 2] As shown in FIG. 2, the raw material dissolving device-fiberizing device-cotton collecting device was operated to apply 2% by weight (solid content) of the phenol resin to the rock wool weight during fiberizing. , Cotton collected thickness about 50mm, density about 7.5k
Eight layers of a single layer rockwool mat 1 of g / m ³ are laminated by a benzrum conveyor 2 to form a laminated mat 3 having a thickness of 400 mm and a density of about 7.5 kg / m ³ , and the laminated mat 3 is a band saw ( Made by Andsoh Co., Ltd. Length 9.5m,
The width is 27 mm, made of stainless steel, and the speed is 10 m / sec. 4 divided into an upper layer (thickness 100 mm, density about 7.5 kg / m ³ ) and a lower layer (thickness 300 mm, density about 7.5 kg / m ³ ), and the upper layer After pressing with a press roll 8 to make a rock wool mat having a thickness of 10 mm and a density of about 7.5 kg / m ³ ,
Stacked with the lower layer and pressed by press roll 9 and conveyor 10
It is sent to a curing furnace with a thickness of 50 mm (upper layer thickness 10 m
m, the thickness of the lower layer was 40 mm, and the average density was 60 kg / m ³ ).

[Comparative Example 1] A comparative example is a conventional manufacturing method, and in FIG. 2, a band saw 4 and a press roll 8 are used.
It is a case relating to a manufacturing apparatus that does not have a. The raw material dissolving device-fiberizing device-cotton collecting device is operated to apply 2% by weight (solid content) of the phenol resin to the weight of rock wool at the time of fiberizing, and the collected cotton is about 50 mm in thickness and about 7.5 k in density.
Eight layers of a single layer rockwool mat 1 of g / m ³ were laminated by a benzrum conveyor 2 to form a laminated mat 3 having a thickness of 400 mm and a density of about 7.5 kg / m ³ , and the laminated mat 3 was a press roll. It was pressed at 9 and sent to a curing furnace at a conveyor 10 to obtain a single-layer board having a thickness of 50 mm and a density of about 60 kg / m ³ .

[Comparison of Results] In Example 1, it was possible to simultaneously manufacture a thin heat insulating cylinder and a thick heat insulating cylinder.
It could be manufactured in 3 hours. When the composite board obtained in Example 2 and the board obtained in Comparative Example 1 are compared, the bending strength of the composite board (Example 2) is 2.93 kg /
cm ² single-layer board (Comparative Example 1): 2.04 kg / cm ² , and the composite board has improved strength about 1.4 times that of the single-layer board.

[0013]

EFFECT OF THE INVENTION The manufacturing method of the present invention is a laminated rock wool laminated surface to which the uncured binder manufactured in the raw cotton line adheres to the required thickness and number in accordance with a plurality of molding / processing devices. Since it is divided into parallel sheets and made into a plurality of sheet-shaped rock wool and supplied to the molding and processing equipment, manufacturing efficiency is improved and at the same time, the rock wool divided in parallel to the laminated surface is processed by compression or application of chemicals. Since the required properties can be imparted and then the sheet-shaped rock wool can be integrated, there is an effect that an integrated rock wool molded product composed of a layer having the required properties, which has not been obtained hitherto, can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic process diagram for producing a thin product such as a heat insulating product and a thick product in parallel according to the present invention.

FIG. 2 is a schematic process diagram for producing a composite board having a hard layer on the surface of the present invention.

[Explanation of symbols]

 1: Single layer rock wool mat. 2: Bendurum conveyor. 3: Laminated mat. 4: Band saw. 5: Conveyor. 6: Conveyor. 7: Conveyor. 8: Press roll. 9: Press roll. 10: Conveyor.

Claims (3)

[Claims] 1. Melting raw materials such as blast furnace slag and basalt,
In the method of manufacturing rockwool products by supplying layered rockwool formed by fiberizing, applying a binder and using a cotton collecting device to a molding and processing facility, the layered rockwool before curing the binder is sliced by a slicer. A method for manufacturing rock wool products, which is characterized by dividing the product vertically and supplying it to a molding / processing facility for commercialization. 2. An uncured layered rock wool coated with a binder is vertically divided by a slicer, branched and conveyed by a conveyor or the like, supplied to a plurality of molding / processing facilities, and commercialized. Rock wool product manufacturing method. 3. An uncured layered rock wool coated with a binder is divided into upper and lower parts by a slicer, and each divided layered rock wool is subjected to an intermediate treatment such as compression or application of chemicals, laminated, and molded and processed. A method for producing a rock wool product, which comprises supplying to and commercializing it.