JPS6357228B2 - - Google Patents

Description

[Detailed description of the invention]

This invention relates to improvements in insulating blanket-backed metal folded roof panels. Conventionally, this type of insulation blanket-lined metal folded roof sheeting has been made by using a metal plate bent into a chevron shape, mat made of organic material such as urethane foam or polyethylene foam, or made of inorganic material such as rock wool, glass fiber, or asbestos. A structure lined with felt as a heat insulating material has been proposed. Of the lining insulation material bonded to the metal plate,
Even if urethane foam or polyethylene foam, which are organic materials, is bonded to a metal plate and then bent into a mountain shape using a forming machine, there is almost no breakage or wrinkles at the bent part. Since it is an organic material after all, it is inconvenient that it cannot be used in places exposed to high temperatures, and it is extremely dangerous as it can burn in the event of a fire and generate toxic gas. On the other hand, needle mats made of inorganic materials such as glass fiber and rock wool sewn together using a needle punch are bonded to a metal plate and then bent at the forming machine, the bent portions break.
In addition, other parts are wrinkled, so there is a drawback that it is not possible to use the so-called pre-installation method of bonding and bending. In order to solve the above problems, an emulsion such as vinyl acetate or acrylic is sprayed or applied to the surface of the needle mat, thereby making it possible to roll form the needle mat and preventing the fibers from scattering and causing damage to the human body. There are products designed to prevent itching, but in reality, in order to withstand the extremely large compressive, tensile, and shear forces that insulation materials receive during roll-forming, it is necessary to create interlayer interlayers created by intertwining inorganic fibers with each other using needles. strength,
The tensile strength and the tensile force of just applying a small amount of resin to the surface are insufficient, and in reality, if the bent part does not break, the other parts will be severely wrinkled or wrinkled. Either it will break or it will break. On the other hand, asbestos felt, which is the same inorganic material,
Asbestos fibers are formed into layers using a carding machine, then an inorganic binder is sprinkled on them and then laminated into several layers, which prevents them from breaking or wrinkling like the pine needles made from glass fibers and rock wool. Although it does not cause bending, the bent part is crushed and becomes thinner, resulting in a decrease in insulation properties. In particular, asbestos fibers are extremely fine, and in the current situation where asbestos pollution caused by their scattering is becoming a problem, it cannot be said to be a desirable material. This invention was made in order to solve the above-mentioned problems, and in particular, it enables roll forming by the advance method, which was considered impossible with conventional needle mats mainly made of glass fiber, and
The main object of the present invention is to provide a heat-insulating blanket-lined metal folded roofing sheet that has less scattering of fibers during handling and is not likely to cause itching to the human body. The heat insulating blanket lined metal folded roof sheet according to the present invention is made of inorganic fiber mat made of glass fiber and endless polyester fiber, and has a weight of 10%.
~40 g/m ² of non-woven fabrics are overlapped, and both of them are made by needle punching processing performed from the side of the polyester fiber non-woven fabrics, so that the polyester fibers become intertwined with the needle fibers in the inorganic fiber mat. A blanket made of a flame-retardant film made of a resin composition is formed on the surface of the polyester fiber nonwoven fabric and is bonded to a metal plate, and both are bent into a chevron shape. . As the polyester fibers used for the nonwoven fabric, polyester fibers obtained by, for example, the Svanbond method are suitable, and as the resin for the flame-retardant coating, for example, acrylic ester-based synthetic resins are suitable. Hereinafter, the present invention will be explained in detail based on drawings showing examples thereof. In FIGS. 1 to 3, A is a heat insulating blanket lined with a metal folded roof plate, and an inorganic fiber mat 1 made of glass fiber and an endlessly long nonwoven fabric 2 of polyester fiber are shown in FIG. As shown in FIG. 2, the polyester fibers are overlapped, and then, as shown in FIG.
The two are integrally bonded by the needle fibers 2a intertwined therein, and after this needle punching process, as shown in FIG. 3, a resin composition is applied to the surface of the nonwoven fabric 2 to form a flame-retardant coating. 3. The one shown in FIGS. 4 to 6 is another embodiment of the lined heat insulating blanket. As shown in FIG. A non-woven fabric 2 of polyester fibers is superimposed, and then as shown in FIG.
Needle punching is applied to each side of both nonwoven fabrics, and the polyester fibers are joined together by the needle fibers 2a intertwined in the mat 1, and after the needle punching process,
As shown in FIG. 6, a flame retardant coating 3 made of a resin composition is formed on the surface of one of the nonwoven fabrics 2. A nonwoven fabric 2 made of endlessly long polyester fibers constituting the lining heat insulating blanket A.
10 to 40 m² considering strength and fire resistance.
g/m ² is suitable. If it is less than 10 g/ ^m2 , it will not be able to sufficiently shield the inorganic fiber mat 1, and it will have disadvantages such as wrinkles during roll forming due to poor strength.If it exceeds 40 g/ ^cm2 , This is because it does not pass the nonflammability test (combustion calorific value). In the case shown in Fig. 7, the heat insulating blanket A constructed as described above is pasted on the metal plate 4 (the blanket shown in Fig. 3 is pasted on the inorganic fiber mat side), and then roll forming is performed. It is then bent into a chevron shape. As described above, as a heat insulating lining material for metal folded roof panels, a non-woven fabric 2 made of endlessly long polyester fibers is superimposed on one or both sides of an inorganic fiber mat 1 made of glass fibers, and then needles are applied. According to the configuration of the punched blanket, the stitching effect due to the intertwining of the needle fibers 2a is significantly stronger than that of the needle fibers when needle punching is performed by stacking conventional organic fiber webs or organic fiber nonwoven fabrics. This prevents breakage, crushing, and damage at the bent portions that occur during roll forming of inorganic fiber mats.
Not only can it reliably prevent the appearance of wrinkles, etc.
Since the interlaminar strength and tensile force of the inorganic fiber mat are also significantly increased, roll forming can be made possible with a small amount of polyester fiber. Moreover, since the inorganic fiber mat 1 is shielded by the nonwoven fabric 2, the inorganic fibers are less exposed to the surface, and therefore, it is effective in preventing the inorganic fibers from scattering and causing itching to the human body. In addition, as described above, in the case of a blanket in which the flame-retardant coating 3 of a resin composition is formed on the surface of the nonwoven fabric 2 of polyester fibers, the coating 3 fixes the long polyester fibers to each other and to the glass fibers. At the same time, the effect of increasing strength can be obtained. Next, examples of this invention will be shown below. Example 1 Fiber diameter 9μ, fiber length 30-50mm, bulk density approximately 0.01
g/cm ³ and a thickness of approximately 55 mm, was coated with Marix WTO (a non-woven fabric made of endlessly long polyester fibers obtained by the spunbond method and having a basis weight of 30 g/m ² ). Unitika Co., Ltd.) were layered and needle punched from the nonwoven fabric side at a rate of 20 stitches/cm ² to integrate them, and then approximately 150 g/m ² of a flame retardant-containing resin dispersion of the following composition was applied to the surface of the nonwoven fabric. After spraying with
A blanket of g/cm ³ and a thickness of approximately 5 mm was obtained.

[Table] Next, the blanket was bonded to a 0.6 mm thick galvanized iron plate using a neoprene adhesive, and after drying, both were rolled-formed into a 7th layer.
As shown in the figure, it was bent into a chevron shape. Example 2 Fiber diameter 9μ, fiber length 30-50mm, bulk density approximately 0.011
g/cm ³ and ¹⁰⁰ mm thick inorganic fiber mat made of glass fiber. Marix WTO (Unitika Co., Ltd.), and needle-punched them at a rate of 30 stitches/cm ² using a top and bottom needle loom to integrate them, and then treated only one side with flame retardant-containing resin in the same way as in Example 1. A blanket having a bulk density of 0.12 g/cm ³ and a thickness of about 10 mm was obtained. Next, in the same manner as in Example 1, the blanket was bonded to a 0.6 mm thick galvanized iron plate using a neoprene adhesive, and after drying, both were roll-formed into a chevron shape as shown in FIG. It was bent and molded. The insulation blanket-lined metal folded roof sheet blanket obtained in the above-mentioned multiple examples 1 and 2 did not suffer from breakage or crushing of the bent portions seen in conventional inorganic fiber mat even during the bending process of roll forming.
No wrinkles or the like were observed at all. Furthermore, in order to confirm the nonflammability of each of the blankets, a test was conducted according to JIS A 1321, and the results shown in Tables 1 and 2 below were obtained. Base material test results

【table】 surface test

【table】

[Table] From the above test results, it was confirmed that the blankets in the metal folded roof panels of Examples 1 and 2 met the conditions for passing the nonflammability test. In addition, Table 3 below shows the tensile strength and interlaminar strength of the blankets used in the metal folded roof panels of Examples 1 and 2, and of a simple organic fiber web layered on an inorganic fiber mat and needle-punched. In the comparison table, it was found that a significant increase in strength could be obtained in the case of a blanket using a nonwoven fabric made of endlessly long polyester fibers.

[Table] However, prototype (1) has an organic fiber web layered on only one side, and prototype (2) has an organic fiber web layered on both sides. As described above, according to the present invention, an inorganic fiber mat made of glass fibers and a nonwoven fabric made of endlessly long polyester fibers with a weight of 10 to 40 g/m ² are overlapped, and both By needle punching performed from the side of the polyester fiber nonwoven fabric, the polyester fibers are bonded by the needle fibers intertwined in the inorganic fiber mat, and a flame-retardant coating of the resin composition is formed on the surface of the polyester fiber nonwoven fabric. The blanket formed by the inorganic fiber mat is bonded to a metal plate, and both are bent into a mountain shape.The strength of the inorganic fiber mat forming the blanket is increased, and The present invention provides a heat-insulating blanket-lined metal folded roof that enables roll-forming by a pre-installation method and is effective in preventing inorganic fibers from scattering during handling and from causing itching to the human body.

[Brief explanation of the drawing]

Fig. 1 is a side view of a heat insulating blanket for a folded metal roof showing an embodiment of the present invention, Fig. 2 is a side view of the blanket after needle punching has been applied, and Fig. 3 is a side view of the insulating blanket with a flame retardant coating formed. 4 is a side view of a heat insulating blanket showing another embodiment; FIG. 5 is a side view of the blanket with needle punching; FIG. 6 is a side view of the blanket with flame retardant coating formed; 7
The figure is an end view of a folded roof board with a blanket attached to it. A... Heat insulation blanket lining metal folded roof board, 1... Inorganic fiber mat, 2... Nonwoven fabric, 2a
... Needle fiber, 3 ... Flame retardant coating, 4 ... Metal plate.

Claims (1)

[Claims] 1. Inorganic fiber mat made of glass fiber,
Endless long polyester fiber weighing 10-40g/
The polyester fibers are combined with the ^nonwoven fabric formed in the inorganic fiber mat by the needle punching process applied from the side of the polyester fiber nonwoven fabric. This heat-insulating blanket-lined metal folded roof is characterized in that a blanket formed by forming a flame-retardant film made of a resin composition on the surface of a fibrous nonwoven fabric is bonded to a metal plate, and both are bent into a chevron shape.