JPS5826266Y2 - mortar base plate - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mortar base plate suitable for laminating cement mortar.

Conventionally, mortar walls are made by applying waterproof paper, such as tar felt, to the base material of the main board, and then partially sealing and fixing lath materials such as wire lath or metal lath with nails or Stella pulls, and then applying mortar material. It was formed by applying it to lath material.

However, the mortar wall formed in this way is pulled down over time due to the mortar's own weight or vibration from the outside, causing the partially fixed lath material to deform its mesh and pull down, resulting in the mortar surrounding the mesh being pulled down. This often caused cracks and peeling.

In other words, this is because the protrusion of the lath material pasted on the waterproof paper is small and the physical bond with the mortar material is weak, so it may be pulled down by the weight of the large mortar material.

Furthermore, in the past, mortar walls had to undergo the above-mentioned processes one after another, which resulted in a long construction period and an economic disadvantage.

However, recently, with the aim of shortening the construction period, reducing cracks, and saving materials, for example, a mixture of plywood, cement, and waterproof adhesive has been formed into a single piece with an uneven shape.
Solidified base materials are becoming commercially available.

This base board is characterized by a significant improvement in shortening the construction period because it integrates lumber, lath wood, and waterproof paper.

However, this base plate has the function of reducing vibrations as mentioned above, and provides insulation, as well as condensation and other moisture, especially deformation of the plywood caused by condensation between the inner and outer walls, and moisture passing through the plywood. There was a disadvantage in that no effective structure was provided for cracks caused by the differential expansion and contraction of the mortar.

In order to eliminate these drawbacks, the present invention has created a mortar base plate with a special shape for the structure of the mortar adhesion surface, which prevents mortar from peeling and cracking and improves work efficiency, economy, and heat insulation. suggest.

An embodiment of the mortar base plate according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing a part of the mortar base plate according to the present invention, which is a mortar base plate in which a synthetic resin foam 3 containing inorganic particles 2 is laminated and integrated on one surface of a hard base material 1.

More specifically, the hard base material 1 is plywood, gypsum board, asbestos slate, wood board, calcium silicate board, calcium carbonate board, metal board, particle board, etc., and the board thickness is at least greater than the strength of wood.

Also, the size is arbitrary, but due to construction considerations, for example, 250
X 3600 mm, 360 x 3600 mm, 9
00 x 1800 mm, etc.

The inorganic particles 2 are particles with a solid structure, particles with a hollow structure, or particles with a porous or foam structure, and the size thereof is about 10 to 50 mm, preferably about 10 to 3 Q mmφ, Use particles with some strength and fire resistance.

Note that the shape of the particles 2 does not necessarily mean spherical particles, but may have an uneven surface shape, rectangular, cubic, etc.
It may be polygonal, rod-shaped, or any other arbitrary shape, and means a size having a volume roughly corresponding to the above-mentioned diameter.

The solid structure particles mentioned above are particles made by crushing natural stones, rocks, and glass, or particles made by granulating clay, cement, etc., and the hollow structure particles include white carbon, sodium silicate liquid, amyopon, and oxidation. Mix and knead calcium and use a granulator to produce soil particles.
These are particles formed into hollow particles by heating and hardening at 0 to 800°C, and examples of particles with a foam structure include pearlite particles,
Shirasu balloons, foam glass grains, anti-firestone, vermiculite and siliceous industrial waste such as ferroalloy dust, hydric soda, water and alum composition at 300-400℃
The particles are fired with a specific gravity of, for example, 0.1 to 3.

In addition, as a synthetic resin foam, the inorganic particles are scattered in the synthetic resin foam so that a part of them is exposed, and
These two are integrally formed, and are mainly made of materials having heat insulating properties and adhesive properties, such as polyurethane foam, polyurea foam, polyisocyanurate foam, epoxy foam, polyolefin foam, polystyrene foam, and phenol foam. etc.

Moreover, the surface structure of this synthetic resin foam, at least on the surface where the inorganic particles 2 are present, has the shape shown in FIG.

That is, at least one portion 2a of the inorganic particles 2 is exposed on the surface of the synthetic resin foam, the so-called surface opposite to the surface in contact with the base material, and the surface 3a between the exposed inorganic particles 2 is formed into an uneven protrusion. It is formed on the outer surface of the shape.

Further, the distribution density of the inorganic particles 2 is a distribution in which the inorganic particles are in contact with each other, a distribution in which the inorganic particles are placed at appropriate intervals, or any other arbitrary density.

Further, the exposed height of the inorganic particles 2 and the protruding height of the synthetic resin foam are, for example, about 5 to 3 Qmm, but can be formed arbitrarily depending on the thickness of the base plate itself.

Next, to briefly explain an example of the method for manufacturing a mortar base plate according to the present invention, the hard base material 1 has a thickness of 7 mm,
900 x 1800 mm plywood, inorganic particles 2 are pearlite particles, specific gravity 0.2, size diameter 10-3
A raw material for rigid polyurethane foam is discharged by a conventional method as spherical particles of Q mm and a synthetic resin foam.

The maximum thickness of the mortar base plate is 40 to 50 mm, and the blending ratio is such that, for example, 300 parts by weight of inorganic particles are added to 100 weight of the synthetic resin foam.

Therefore, plywood 1 is stored in a lower mold (not shown), and polyol, so-called liquid A, and polyisocyanate, so-called B
Immediately after mixing the liquid with a mixer (not shown), the liquid is discharged.

Pearlite grains 2 are scattered on the laminate of the discharged polyurethane foam raw materials in the middle of reaction, and an upper mold (not shown) is placed on the lower mold.

Thereafter, after a suitable period of time has elapsed, the upper mold is removed and the lower mold is removed, resulting in a mortar base plate having the shape shown in FIG.

When manufacturing a base plate with such a surface structure, there are particular considerations, such as the amount of raw material used for the synthetic resin foam, the state of the reaction system, such as immediately after mixing, in the middle of the gel time, at the end of the gel time, the upper mold, The volume of the space formed by the lower mold, etc. are related to each other.

In the case of the above embodiment, one side of the foam, that is, the side where the inorganic particles 2 are present, is open, forming a substantially free foam structure.

The difference in unevenness on the mortar adhesion surface of the mortar base plate thus produced was about 10 mm.

Therefore, a cement mortar material M, that is, a cement mortar containing cement and sand in a ratio of 1:2, was applied to this mortar base plate to a thickness of 10 mm while thoroughly pressing it into the uneven surface.

After this hardens, it is used as a top coat with a mixing ratio of cement and sand of 1:1.
A cement mortar blended in No. 3 was sprayed and allowed to harden and dry to form a cement mortar wall.

What has been described above is only one embodiment of the present invention, and plywood may be treated with waterproofing, such as paint or waterproof paper, or asphalt felt, as shown by the two-dot chain line in FIG.
It is also possible to provide one or more types of aluminum, lead sheets, etc. on the synthetic resin foam adhering surface and the reflective surface of the plywood.

With the above structure, (a) the complicated ground work of lath materials such as metal lath, slats, terfelt, etc. can be done all at once, unlike in the past, which significantly shortens the construction period and increases mechanical strength through composite integration. It has the characteristics of improved performance and mass production.

(b) Condensation caused by temperature differences between the inside and outside of the house and cracks in the cement mortar because synthetic resin foam is used as a binder, which has high insulation, cushioning, adhesion, fire resistance, waterproofness, and workability. It has the feature of preventing cracks caused by vibrations caused by external forces.

(c) The cement mortar adhesion surface has a heterogeneous uneven structure, that is, one surface has a rough surface and porous structure to which the cement mortar material easily adheres.Some of the randomly shaped particles protrude, and synthesis occurs between the protrusions of these particles. Because some parts of the resin foam are randomly shaped and protrude, cement mortar adheres very easily, and the protrusions of the homogeneous inorganic particles adhere strongly to the protrusions, and the protrusions of the synthetic resin foam have a high density. Since it is a so-called foam with a small diameter, it absorbs the expansion and contraction of cement mortar and has the characteristic of preventing cracking and falling off of cement mortar.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a mortar base plate according to the present invention, and FIG. 2 is an explanatory view showing an example of a mortar base plate according to the present invention coated with cement mortar. 1... Hard base material, 2... Inorganic particles,
3...Synthetic resin foam.

Claims (1)

[Scope of utility model registration request] A synthetic resin foam in which inorganic particles with a particle size of 10 to 5 Qmmφ are bound is integrally fixed on a hard base material, and the surface of the synthetic resin foam opposite to the surface in contact with the base material is A mortar base plate characterized in that 5 mm or more of the inorganic particles are exposed and the spaces between the inorganic particles are uneven and protruding.