JPS593263B2 - Molding equipment for fire-resistant foam material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to forming a foam from a foam material, for example, a foamable synthetic resin raw material, particularly a thermosetting synthetic resin raw material, or a thermoplastic synthetic resin raw material, and providing a fire-resistant structure on at least one outer peripheral surface of the foam. The present invention relates to a molding device for continuously forming a foamed material.

Foamed bodies (hereinafter simply referred to as foams) made of organic polymeric materials are mainly produced by adding or mixing one type of blowing agent, such as air, trichloromonofluoromethane (trade name: Freon 11, etc.), or water, to its raw materials. It was manufactured by

However, the heat resistance of this type of foam itself is only about 130° C. at most, and it does not have fireproof performance that can satisfy the fire resistance and heat resistance required for building materials. Therefore,
For example, for foam raw materials, borax, silicic acid or their metal salts, metal powder, pearlite, vermiculite,
Measures have also been taken to improve flame retardancy by adding and mixing fire-resistant and non-combustible inorganic powder such as rock powder. however,
It has been technically extremely difficult to uniformly distribute powder and granules, which have various physical properties such as specific gravity and shape, which are significantly different from those of this type of foam raw material, into the 15 foam. In other words, when the above substances are added to the foam raw material, they are dispersed irregularly depending on the specific gravity difference, the foaming speed of the foam raw material, and the expansion ratio, and two or more types of powder particles with different particle sizes and specific gravity are mixed. When 0 materials were mixed, the result was a laminated structure in which each layer was separated, rather than a uniformly mixed layer, and it was extremely difficult to obtain a panel with stable quality such as fire resistance. Furthermore, when this kind of foam raw material comes into contact with water or other liquids, the reaction time and reaction ratio change, the Z foam expansion ratio and adhesiveness decrease, and the density also becomes non-uniform. In order to eliminate such drawbacks, the present invention does not mix the above-mentioned powder and granular materials with different physical properties with the foam raw material at the same time, but sprays each of them one after another, and x. Forming of a foamed material that can reliably and inexpensively produce a foamed material that has excellent fire resistance, heat resistance, and heat insulation properties by using the above-mentioned equipment. This paper proposes a device.

35 and below, the foam material molding apparatus according to the present invention will be explained in detail using the drawings.

FIG. 1 and FIG. 2 are a side view and a sectional view showing an example of a molding apparatus according to the present invention.

In the figure, reference numeral 1 denotes a foam material for forming a so-called foam made of an organic polymer material. 2 is an upper mold member, 3 is a lower mold member, and is a mechanism in which a mold 4 for molding the foam material raw material 1a into a predetermined shape is moved and formed over a predetermined area, and the process of sequentially repeating the process of dissolving at the end part is performed. be.

To explain further, the foam material 1 is mainly made of a thermosetting or thermoplastic synthetic resin raw material, and includes a foaming agent, a stabilizer,
It is a foam that is formed by mixing a foam regulator, etc., and specific examples include polyurethane foam, phenol foam, polystyrene foam, etc. In addition, the upper and lower mold members 2 and 3 face each other from the middle, and while forming the foam material raw material 1 into a predetermined shape in the mold 4, there is a mechanism for releasing the mold 4 at the end, and a so-called endless metal plate is placed in an oven. It engages the front and rear guide wheels 5, 6 and drive wheels 7, 8 like a belt and rotates them. Furthermore, the spacing between the molds 4 is set so that the foaming ratio is smaller than that during free foaming of the foam material 1. Numerals 9 and 10 are auxiliary wheels that reinforce the mold members 2 and 3 when forming the mold 4.

Reference numerals 11 and 12 denote temperature control devices, which are provided with ducts that are placed close to the upper and lower mold members 2 and 3 to heat the respective mold members 2 and 3.

13 is a caterpillar type molding machine, and the mold members 2 and 3 described above are
, guide wheels 5, 6, drive wheels 7, 8, and auxiliary wheels 9, 10.

As is clear from the figure, the lower mold member 3 extends in a direction opposite to the direction in which the mold 4 moves (to the left in FIG. 1). Reference numeral 14 denotes a foaming material feeder, which is installed in front of the entrance of the mold 4 and at an appropriate location.

This raw material feeder 14 is, for example, a system in which tanks 15 and 16 that independently contain polyisocyanate and polyol, which are raw materials when polyurethane resin is used, and a tank 17 that contains borax B are connected to a mixer 18. . Reference numeral 19 is an inorganic granular material scattering machine, which sprays inorganic granular material such as perlite grains P, and 20 is an inorganic powder dispersing machine, which sprays, for example, borax B1 and/or gypsum C1, sodium silicate, trioxide, etc. Tanks 21 and 2 containing one or more of antimony, soda carbonate, processed sodium metaborate, etc.
2 and a mixer 23 for mixing these materials, the dissimilar materials are evenly mixed and dispersed to prevent the formation of defective areas in the refractory layer.

In this case, each tank is provided individually. Reference numeral 24 denotes an adhesive application machine, which applies type S of water glass, resin adhesive, starch paste, varnish, etc. to the front and opposite surfaces (back surfaces) of the back materials 25 and 26 in the form of a film using a spray gun and a roller.
It is applied in the form of drops and is useful for fixing the inorganic granules P1 and the inorganic powders B and C.

Reference numeral 27 denotes plate-shaped restraining members arranged on both the left and right sides of the mold 4.

28 is a roller for winding the backing material 26, and 29 is a guide roller that serves to guide the backing material 26 onto the mold member 2.

Reference numeral 30 is a heating device which applies adhesive to a thin metal plate and waterproof paper as the backing material 26, and after adhering the inorganic granules P1 and the inorganic powder and granules B and C to the backing material 26, a heating device is used to prevent these substances from shifting from the backing material 26. In addition, it is fixed so that it does not fall, and also dries the adhesive S so that it does not adversely affect the raw material of the foam material 1.

Next, to explain the operation, it is assumed that the caterpillar type molding machine 13 rotates in the direction of the arrow, and the surface material 25 is fed from the left end and installed on the lower mold member 3.

When the surface material 25 arrives on the adhesive application machine 24, liquid water glass S is applied in the form of water droplets onto the surface from a spray gun. Next, this surface is the inorganic powder spreader 20
Upon reaching the top, a mixture of borax B and gypsum C is sprinkled (dropped) on the plane in the required distribution and amount.
When this surface moves horizontally under the inorganic particulate matter scattering device 19 at a constant speed, the required amount of pearlite grains P is scattered. As a result, an inorganic powder layer fixed by the water glass S is formed on the back surface of the surface material 25.
The position of this powder layer does not change even while the surface material 25 is being moved because it is fixed by the adhesive. Of course, even if the foaming material raw material 1a is dropped and placed on top of this, it remains immobile. However, not all of the above-mentioned inorganic substances are completely fixed, and there are also cases where a relatively large amount of the inorganic substances are under such conditions. Furthermore, when the surface material laminated with the inorganic powder/granular material layer reaches the bottom of the polyurethane resin mixer 18, an unfoamed liquid polyurethane resin raw material in which borax B is almost uniformly dispersed is discharged from its opening. be done. On the other hand, on the back side of the back material 26, the adhesive S1, the inorganic powder B, and the Cl inorganic granule P are laminated in the same order as for the surface material 25, and then the mold 4 You will be guided to the entrance. At this time, the adhesive S applied to the backing material 26 is dried by the heating device 30 just before reaching the guide roller 29, and the backing material 26 is supplied to the mold entrance. Next, the composite material sandwiched by the front and back materials 25 and 26 is continuously fed out from the exit end of the mold 4 through the molding machine 13 in a structure as shown in FIG. 2. that's all,
What has been described is only one embodiment of the present invention, and as shown in FIG. It is also possible to form a predetermined closed mold 4 by fixing each mold piece and having both the upper and lower mold pieces facing each other.

In addition, in FIG. 3, the surface material 25 is a long groove-shaped metal construction panel having connecting portions on both left and right sides, and this is placed on the lower mold member 3, and the back material 26 is attached along the upper mold member 2. This figure shows the state in which the synthetic resin raw material is supplied and foamed. As mentioned above, according to the foamed material molding apparatus according to the present invention, there is almost no need to mix two or more substances with different physical properties in an apparatus such as a mixer, so the work efficiency is extremely high compared to the conventional method. It has the characteristics that it can improve the product yield as well as greatly improve the product yield.

Furthermore, according to the present invention, adhesive is applied in the form of water droplets or films to the front and back materials, and inorganic powder or granules are laid down and fixed in a layered manner, and then the inorganic granules are laminated. This strengthens the inorganic layer, and then binds these together with K when the foam material is foamed, so the product has high mechanical strength and is also characterized by outstanding fire resistance. In addition, since each material is supplied separately, the required amount can be uniformly distributed during spraying, coating, etc., so it has the great feature of being able to continuously produce homogeneous products. Further, since the liquid or jelly adhesive is dried by a heating device before coming into contact with the foam material, it has the characteristic that it can be manufactured without inhibiting the reaction and foaming of the foam material.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing one embodiment of a foam material molding apparatus according to the present invention, FIG. 2 is an explanatory diagram showing an enlarged partial cross section thereof, and FIG. 3 is an explanation showing another embodiment. It is a diagram. 1... Foaming material, 2, 3... Upper and lower mold members, 4... Mold, 11, 12... Temperature control device, 13... ... Caterpillar type molding machine, 14.
... Raw material supply machine, 19 ... Inorganic granular material scattering machine, 20 ... Inorganic powder and granular material spreading machine, 24.
...Adhesive applicator, 30...Key key device.

Claims (1)

[Claims] 1. Upper and lower mold members facing each other are formed endlessly, and the lower mold member is installed longer than the upper mold member, and the upper and lower mold members face each other one after another to form a predetermined mold while moving in a certain direction, and In a molding device equipped with a caterpillar type molding machine that internally molds a foamed material made of an organic polymer material, a raw material feeder that discharges the foamed material raw material to a lower mold member in front of the mold entrance is installed, and the feeder An inorganic granular material spreader is installed before and after the sprayer to spread perlite grains, etc., and an inorganic powder spreader is installed before and after the spreader to mix and spread gypsum borax, etc. An adhesive supply machine is provided, and a guide roller for guiding the sheet-like backing material so as to face the lower mold member is provided between the raw material supplying machine and the mold entrance, and the backing material is placed just before the guide roller. 1. An apparatus for molding a fire-resistant foam material, characterized in that it is equipped with a heating device that applies heat to the foam.