JPH08281858A - Refractory cover sheet - Google Patents

Abstract

PURPOSE: To provide a refractory cover sheet eliminating the rock wool spraying work on the building spot, capable of easily and safely forming a refractory cover layer on a steel material and forming a refractory cover layer constant and stable in thickness to easily enhance the refractory capacity of a covered article. CONSTITUTION: A refractory cover sheet a is formed by laminating a refractory cover layer A on the surface of a base material sheet layer B and laminating an adhesive layer C and a release paper layer D on the rear surface thereof in this order.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a fireproof coated sheet for coating the outer surface of a steel material used in a building or a structure requiring a fireproof structure.

[0002]

2. Description of the Related Art Conventionally, a structure made of steel used for a building or a structure requiring a fireproof structure is generally made to have a fireproof structure by spraying rock wool on site after the body is assembled and formed. .

[0003]

However, in the above method, rock wool spraying work is dangerous.
It was a work in a dirty and tight 3K environment, and required considerable skill to form a rock wool layer uniformly. Also, on-site equipment for spraying is required,
There were costs such as transportation costs.

[0004]

In order to eliminate such drawbacks, the present invention laminates a fireproof coating layer on the front surface side of a base material sheet layer, and an adhesive layer and a release layer on the back surface side of the base material sheet. By using a fireproof coated sheet that is laminated in the order of the paper pattern layers, the work of spraying rock wool at the construction site can be eliminated, and the fireproof coated layer can be easily and safely formed on the steel material. The present invention proposes a fire-resistant coating sheet capable of forming a coating layer.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the fireproof coated sheet according to the present invention will be described in detail below with reference to the drawings. FIG. 1 (a) is a perspective view showing a typical example of the fireproof coated sheet α, FIG.
(B) is an enlarged cross-sectional view showing the stacking relationship. The fire-resistant coating sheet α has at least 4 of the fire-resistant coating layer A, the base sheet layer B, the adhesive layer C, and the release paper layer D in order from the top (front surface side).
It has a layered structure.

The base material sheet layer B is a portion which becomes a base material of the fireproof covering sheet α and functions as a reinforcing material for giving the fireproof covering sheet α a certain strength. The material of the base sheet layer B is, for example, a plastic resin sheet based on various synthetic resins, an organic or inorganic non-woven fabric made of various fibrous materials, a paper sheet having a surface waterproofed or variously laminated. , Wire mesh, lath sheet,
It is composed of a KG sheet, a breathable waterproof sheet, and the like.

The fireproof coating layer A is formed on the surface side of the base sheet layer B by utilizing the self-adhesiveness of the fireproof coating layer A itself.
Alternatively, as shown by a chain double-dashed line in FIG. 1B, an adhesive layer C described later is separately interposed and laminated. Also,
The fireproof coating layer A adds fireproof performance and fireproof performance to the fireproof coating sheet α and also functions as a decorative layer on the surface. It also prevents the progress of combustion without generating a large amount of toxic gas.

As a material for the fire-resistant coating layer A, firstly, as a material for forming a flame-retardant and non-combustible coating film, alkali silicate is dissolved in water, and clay, talc and other pigments are added thereto. Clay, talc, other pigments added to an aqueous solution of a flame-retardant substance such as casein, or a mixture of these, or oils, varnishes, paints, enamel, etc. added, phthalic acid Resin varnish,
It is obtained by adding paraffin chloride and the like to vinyl chloride and the like and further adding antimony oxide.

Secondly, as a material for forming the heat insulating layer at the time of combustion, foaming raw materials (raw material for fire-preventive chemical reaction catalyst, raw material for carbon generation, raw material for non-combustible gas generation), color pigment, resin for forming film, etc. are added. It consists of Among these, the carbon-producing raw materials are selected from carbohydrates and polyhydric alcohols, and these are carbonized by contact with a flame to form a heat insulating layer. Further, the carbon-producing raw materials have an acid group and produce an inorganic acid and an ester, and the inorganic acid is phosphoric acid. This is generated by thermal decomposition of catalysts and fireproofing agents. Furthermore, dicyandiamide, melamine, chlorinated paraffin, etc. may be mixed as a nonflammable gas generating raw material.

The adhesive layer C is formed by laminating it on the back surface side of the base sheet layer B, and as shown in FIGS. This is for easily adhering to and attaching to the outer periphery of the standard frame β (H-shaped steel material in the figure). In addition, in FIG. 2B, an example in which the overlapping margin 1 is provided and attached to the fireproof covering sheet α is shown.

As a material for the adhesive layer C, an elastomer type epoxy resin, an isocyanate, for example, an emulsion type such as methylene diisocyanate (abbreviation: MDI),
One of hot-melt type and modified isocyanate thereof, for example, urethane-modified, buret-modified isocyanate, isocyanurate-modified isocyanate and the like is used.

The release paper layer D is laminated on the lower part of the adhesive layer C so as to be easily released, and usually prevents the adhesive layer C from drying and places the fireproof coating sheet α on the necessary places. It is removed when it is attached.

As the material of the release paper layer D, various paper-like sheets are surface-treated with a chemical agent such as silicone resin or stearate as a release agent.

2 (a) and 2 (b) are explanatory views showing an example of use of the fireproof coated sheet α. For example, as shown in the figure, the release paper layer D is peeled off and standardized by JIS such as steel materials. It is easily adhered to the outer periphery of the frame β (H-shaped steel material in the figure) to improve the fire resistance performance. Of course, in addition to such a use, the fireproof covering sheet α can be used as a covering material for a portion requiring fireproofness and fireproofness.

[0015]

[Other Embodiments] The embodiment described above is one embodiment of the fireproof coated sheet α according to the present invention, and the fireproof coated sheet α as shown in FIGS. That is, FIG. 3A shows an example in which the lath sheet 2 made of various wire mesh is used as the base material sheet layer B, and particularly the fireproof coating sheet α.
This is an example in which the strength of is improved. Further, FIG. 3B shows an example in which a sheet-like material 3 for enhancing adhesiveness and waterproofness is interposed between the lath sheet 2 and the fireproof coating layer A.

FIG. 4A shows an example in which the base sheet layer B is embossed with irregularities 4, and FIG. 4B shows an example in which a plurality of convex stripes or concave stripes 5 are formed on the base sheet layer B. In this example, the adhesion area between the fireproof coating layer A and the base sheet layer B is increased to improve the adhesive force between the two due to the anchor effect.

FIG. 5 shows that the protrusions 6 are formed on the surface of the base sheet layer B by flocking or the surface of the base sheet layer B is fluffed to increase the adhesion area between the fireproof coating layer A and the base sheet layer B. This is an example in which the adhesive effect between the two is improved by the anchor effect.

[0018]

As described above, according to the fire-resistant coating sheet of the present invention, the fire-resistant coating layer is formed into a sheet having an adhesive layer, so that it is possible to easily perform fire-resistant coating on any part. Since it can be easily adhered to the surface of steel materials that require a fire resistant structure, it eliminates the need for rock wool spraying work on site, which was previously necessary, and shortens construction work, reducing labor and cost of field work. It can be greatly reduced. Since the fireproof covering sheet also functions as a cushioning material, the danger and damage of the covering can be prevented. There are characteristics and effects.

[Brief description of drawings]

FIG. 1 is a perspective view showing a typical example of a fireproof coated sheet according to the present invention.

FIG. 2 is an explanatory view showing an example of use of the fireproof coated sheet according to the present invention.

FIG. 3 is an explanatory view showing another example of the fireproof coated sheet according to the present invention.

FIG. 4 is an explanatory view showing another example of the fireproof coated sheet according to the present invention.

FIG. 5 is an explanatory view showing another example of the fireproof coated sheet according to the present invention.

[Explanation of symbols]

 α Fireproof coating sheet β Frame A Fireproof coating layer B Base material sheet layer C Adhesive layer D Release paper layer 1 Overlap 2 Las sheet 3 Sheet material 4 Embossing 5 Convex or concave 6 Protrusion

Claims (1)

[Claims] 1. A fire-resistant coating layer is laminated on at least the surface side of a base sheet layer which is a base material of the fire-resistant coating sheet, and
A fire-resistant coating sheet, comprising an adhesive layer and a release paper layer laminated in this order on the back surface side of the base sheet layer.