JPS6047101B2 - Blanket for metal folded roof sheets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a blanket used as a backside insulation layer of a folded metal roof.

Conventionally, this type of blanket is made by forming glass fibers or rock wool into a mat using a web-making machine.
This is then subjected to needle punch treatment.''↓J,! L, A
, 1ι--/-rebφΛ, , 1-1-iNj' lt, blankets, and blankets coated with or impregnated with synthetic resin on the surface or inside of the blankets, etc. Asbestos felt is known, which is made by forming asbestos into layers using a carding machine, scattering an inorganic binder, and laminating them into several layers.

By the way, in the case of the above-mentioned metal roof, under severe climatic conditions during the cold season, that is, when there is a large temperature difference between the inside and outside of the roof shingles, condensation water forms on the inner surface in contact with the insulation blanket, and this water is directly absorbed through the blanket. The condensed water either drips down or flows down the inner surface, stagnates, and then drips from there.In factories and warehouses, this dripping condensation can contaminate or corrode products, machinery, and equipment. or

Although the occurrence of condensed water on metal roof sheets is unavoidable,
If the above-mentioned insulation blanket can retain enough water,
Although the above-mentioned problems can be easily solved, the above-mentioned blankets made of glass fiber, rock wool, asbestos, etc. are unsuitable for the following points.

In other words, blankets made of glass fiber or rock wool have almost no water retention ability.

On the other hand, blankets made of asbestos fibers have better water retention than brackets made of glass fiber or rock wool, so even if a large amount of condensed water occurs due to the temperature difference between indoors and outdoors, it will prevent the condensed water from dripping. It is extremely rare to be invited. However, asbestos fibers are extremely fine, and in the current situation where asbestos pollution caused by their scattering has become a problem, it cannot be said to be a desirable material.
On the other hand, with blankets made of glass fiber or rock wool, the fibers may scatter during construction, or some of the fibers may break and turn into powder when bolts are tightened when interconnecting metal folding plates. The abnormal itch that it causes to the human body due to outbreaks is a major drawback in terms of environmental hygiene. Furthermore, when a blanket made of glass fiber or rock wool is laminated to a metal roofing plate and simultaneously subjected to roll forming, the bent portion may be cut or wrinkled.

In this respect, although asbestos felt does not break like glass fiber or rock wool, it has the disadvantage that the folded portions are crushed and become thinner, resulting in a decrease in insulation performance. This invention was made to solve the above problems, and has a significantly higher water retention capacity than conventional blankets mainly made of glass fiber or rock wool, and can be used in extremely cold regions. There is almost no risk of condensation water dripping, and there is little scattering of fibers during handling, making it less harmful to the human body.
The object of the present invention is to provide a blanket for folded metal roofing sheets that has almost no risk of causing itching and does not cut or wrinkle when bent or processed.

The metal folded roof blanket according to this invention can be made of glass fiber, rock wool, or mineral slag fiber! Inorganic fiber mat made of
A flame-retardant organic fiber web made of either polyacrylonitrile fiber or polyester fiber is added to the overlapping portion of the web, and a flame-retardant organic fiber web made of either starch-acrylic graft copolymer, polyethylene oxide, bovar, or bentonite is added to the overlapping portion. It is characterized by a structure in which it is integrally joined by needle punching with a super absorbent material interposed therebetween.

The super absorbent material has a water absorption capacity of, for example, 11 times more than its own weight, has breathability (moisture absorption and desorption properties), and instantly absorbs water and swells to form a gel. The starch-acrylic graft copolymer, polyethylene oxide, boval, and bentonite, which do not release water even when a certain amount of pressure is applied, are suitable, and the content of the laminate is preferably 10 g1d or more.

Hereinafter, this invention will be explained in detail based on the drawings showing various embodiments thereof.

FIG. 1 shows the basic structure of the metal folded roof sheet blanket according to the present invention, in which 1 is an inorganic fiber mat;
2 is a flame-retardant organic fiber web, and 3 is a super absorbent material.

The method of interposing the super absorbent material 3 in the laminated polymerized portion of the inorganic fiber mat 1 and the flame-retardant organic fiber 2 is as follows:
The surface of the mat 1 may be uniformly sprayed with a powdered highly absorbent material using a sprayer, or if it has dissolved or swelled, it may be coated with a sprayer or coater. By overlapping them, the desired blanket can be obtained. As shown in FIG. 2, as a means for joining the mat 1 and the web 2, needle punching is performed from the web 2 side so that some fibers 2'' on the web side penetrate the mat 1, and the mat 1 is bonded to the mat 1. If you intertwine it with the fibers of
A strong bond is obtained, and at the same time the laminate becomes dense and strengthened, and the powdered super absorbent material 3 is firmly held between the fibers by the entanglement of the fibers.

The one shown in FIG. 3 is another embodiment of the present invention, in which webs 2 are laminated on both sides of a mat 1, needle punching is performed from both web sides, and the gap between the mat 1 and one of the webs 2 is A super absorbent material 3 is interposed therein.

Among the blankets configured as described above, the blanket shown in FIG. 2 is arranged with the inorganic fiber mat 1 facing the metal folded roof board (not shown), and the blanket shown in FIG. One of the two-sided webs 2 is used with one facing the roof board, and the following excellent effects can be obtained.

In other words, in the above-mentioned blanket, a highly water-absorbent material capable of absorbing a large amount of water is placed in the laminated and polymerized part of the inorganic fiber mat 1 and the flame-retardant organic fiber web 2, so that the difference in temperature between the inside and outside of the roof sheet causes water to leak inside the roof. Since the water condensed on the surface is absorbed by the superabsorbent material 3, dripping of water from the roof can be prevented.

In addition, in the case of the above-mentioned blanket, the fiber mat made of brittle and abrasion-resistant glass fibers is surrounded by an organic flame-retardant fiber web, tightly intertwined, and sewn together, so that the glass fibers do not scatter. This reduces the chance of causing any itch to the human body during construction, and in particular, a glass fiber mat whose both sides are surrounded by a flame-retardant fiber web and is integrated does not cause any itch to the human body. Moreover, even if the blanket with the above structure is laminated to a metal plate and simultaneously bent and formed using a forming machine, the high elasticity, toughness, and abrasion resistance of the flame-retardant organic fiber prevents the bent portion from being cut or crushed. , wrinkles and other inconvenient phenomena do not occur. In addition, the blanket with the above structure has self-extinguishing properties as a whole despite using organic fibers, and has a suitable amount of self-extinguishing properties, so it meets JIS-A-11.
It has the ability to pass the first grade of the No. 21 non-combustibility test. Next, examples of this invention will be shown below.

Example 1 Fiber diameter 9μ, fiber length 30-5-, bulk density approximately 0.01g
k71. Sunwet IM-3 is applied as a super absorbent material to the surface of a fiber mat made of glass fiber with a thickness of approximately 40W1.
00 (manufactured by Sanyo Kasei Co., Ltd.) was uniformly dispersed using a vibrating feeder at a rate of about 12 g per bottle, and on top of that, polyacrylonitrile flame-retardant fiber Kanekalon (Kanebuchi Chemical Industry Co., Ltd.)
Consisting of a backlash density of approximately 0.005g1cf1 and a thickness of approximately 8
m! The fl(7) fiber webs are stacked one on top of the other and needle punched from the fiber web side at a rate of 80 stitches/cm to integrate them, resulting in a bulk density of 0. I1g/c, thickness approx. 5m
m blankets were obtained.

Example 2 Fiber diameter 9μ, fiber length 30-50Tm! White powder of Sunwet IM-300 (manufactured by Sanyo Kasei Co., Ltd.) as a super absorbent material was added to the surface of a previously needle-punched glass fiber mat with a bulk density of about 0.05 g, k111, and a thickness of about 20 wn using a vibrating feeder. per 1 bottle,
Spread evenly at a rate of about 2.4g, and add fiber Φ,
Bulk density of approximately 0.004 g1c made of polyester flame-retardant fiber Heim (manufactured by Toyobo Co., Ltd.) with a fiber length of 76 wn.
r11 Fiber webs with a thickness of 15 wIn are overlapped and needle punched from the side of this fiber web at a rate of 80 stitches to integrate them, and the bulk density is 0.11 g1 d1 thickness is about 1
``I got a blanket.

Example 3 On the previously needle-punched glass fiber mat in Example 2, a white powder superabsorbent material Markox E-160 (Meisei Kasei Kogyo Co., Ltd.) was added as a superabsorbent material at a rate of 60g per 1R11. After the fiber web made of the polyester flame retardant fiber in Example 2 was laminated on both sides of the glass fiber mat, needle punching was performed from one side of the fiber web at a rate of 40 stitches/d, and Needle punching was performed from the direction of the other fiber web at a rate of 40 switches/Clt to obtain a blanket with a bulk density of 0.10 gId and a thickness of 11 tons.

When the blanket obtained in the above example was compared with conventional glass fiber mats and asbestos felt, the water retention performance of metal plates against condensed water was compared, and the results shown in the table below were obtained.

The experiment was conducted using a tin cone (thickness 0) as shown in Figure 4.
．． Sample 6 was pasted on the outer surface of test piece 5 of 3wt x diameter 100 x height 100), and water and ice were placed inside the test piece 5 in a constant temperature and humidity room to create a test environment with a room temperature of 34°C and humidity of 80%. This was carried out by holding the sample, observing the dew condensation phenomenon that occurs on the surface of the sample, and measuring the amount of water droplets falling over time using a measuring cylinder 7.

− Lolo ′ f also ◆ ゛′ 〒 ”′
-Year T. ．． As stated above, according to this
-゛) An inorganic fiber mat made of any of wood fibers, rock wool, or mineral slag fibers, and a flame-retardant mat made of any of flame-retardant polyvinyl chloride fibers, polyacrylonitrile fibers, or polyester fibers. A combustible organic fiber web is integrated by needle punching with a super absorbent material made of starch-acrylic graft copolymer, polyethylene oxide, poval, or bentonite interposed in the overlapped portion. It has a much higher water retention capacity than conventional brackets mainly made of glass fiber or rock wool, and there is no risk of condensation water dripping even when used in extremely cold regions. Moreover, there is little scattering of fibers during handling, so there is almost no risk of causing itching to the human body, and there is no risk of cutting or creating wrinkles during bending after bonding to the metal plate. A blanket for metal folded roof sheets without any fear can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the configuration of a metal folded roof sheet blanket showing one embodiment of the present invention, Fig. 2 is a side view of the blanket after needle punching, and Fig. 3 is a blanket according to another embodiment. The side view of FIG. 4 is an explanatory diagram of the performance test of the blanket. DESCRIPTION OF SYMBOLS 1...Inorganic fiber mat, 2...Flame retardant organic fiber web, 3...Super absorbent material, 4...Adhesive.

Claims (1)

[Claims] 1. An inorganic fiber mat made of glass fiber, rock wool, or mineral slag fiber, and a flame-retardant polyvinyl chloride fiber, polyacrylonitrile fiber, or polyester fiber. The resulting flame-retardant organic fiber web is subjected to needle punching processing with a superabsorbent material made of starch-acrylic graft copolymer, polyethylene oxide, poval, or bentonite interposed in the overlapping portion. A blanket for metal folded roof sheets, characterized in that they are integrally joined. 2 The inorganic fiber mat and the flame-retardant organic fiber web superimposed on both sides thereof are bonded together by needle punching with a super absorbent material interposed in one of the superimposed parts. A blanket for metal folded roof sheets according to claim 1.