JPS6292840A - Joint structure of glass fiber cloth coated with fluoroplastic in membrane body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application'!?) The present invention relates to the joint structure of glass fibers 1 (i) coated with a fluororesin such as tetrafluoroethylene resin in an outdoor membrane body. .

(Prior art) 'i! as a membrane body! : Glass fiber, which has various advantages as a noncombustible material that complies with building regulations, is durable, and is easily heat-treated tlA material, has recently been widely used as the core material of membrane materials.

This glass fiber is often made into a cloth-like material with improved self-cleaning properties and water resistance as a DO material such as COCHIA BURE on one or both sides with a fluororesin such as tetrafluoroethylene resin.

However, in the bonding surface of these membrane materials that occurs in the process of constructing the membrane body, in the conventional bonding structure of only the width heat seal structure shown in the cross-sectional view of FIG.
The joint end surface where the coating is not thorough (11)
It is possible to prevent rain and ice from entering the glass fiber layer (13) of the membrane material, but there is a risk that the strength of the membrane material may be weakened or even that the strength of the entire membrane body may be deteriorated.

In addition, those +44 waters are the aforementioned glass fiber layer (13)
There are many people who say that water droplets (14) inside the membrane reduce the sunlight transmittance of the membrane material, and that large water M (+4) catches people's eyes and is undesirable in terms of appearance. Ta.

(Problems to be Solved by the Invention) The present invention has been made in view of the above-mentioned problems, and has the purpose of preventing rainwater etc. from leaking from the joint end surface (11) of the 11-piece lumber.
It prevents water droplets (14) from entering the layer (13) and deteriorating the strength of the film material, and also prevents water droplets (14) from forming within the glass fiber layer (13) and reducing the translucency of the film material. The object of the present invention is to provide a bonded structure of glass fiber cloth coated with fluororesin, which does not cause the (14) to remain on the person's 11.

(Means for solving the problem) Therefore, in a membrane body whose membrane material is glass fiber cloth coated with fluororesin, the joint end surface of two or more of the membrane materials is coated with fluorine. The bonding structure of the glass mm layer coated with fluororesin in the membrane body formed by placing the membrane material and fluororesin in close contact by integrally heat-sealing the membrane material and fluororesin from the upper and lower sides allows the above-mentioned It is an attempt to solve a problem.

(Embodiments) Hereinafter, preferred embodiments will be described in detail with reference to the drawings in terms of their configurations and operations. However, unless otherwise specified, the sizes, materials, shapes, and relative positions of the components described in this embodiment are not intended to limit the scope of the invention to these, but are merely illustrative examples. It's nothing more than that.

FIG. 1 is a perspective view showing an example of a joining structure of glass fiber cloth coated with fluororesin (hereinafter referred to as fluororesin membrane) in a membrane body according to Mokubun.

In this example, two fluororesin films (outside and inside) were used.
The bonding surface (10) of la) (lb) is not bonded.

Fluororesin is a well-known material whose main raw materials are hydrofluoric acid and chloride.
As shown in the cross-sectional view of the figure, both sides of the glass mm layer (13) are coated with fluororesin made from polytetrafluoroethylene (PTFE), and the thickness of the coating is 0.8H. be.

However, only one side of the glass mm layer (13) is coated with fluororesin (PTFE).
La) (Ib) is also applicable or I, and the glass fiber layer (13) is two / basic resin M (la
) (1b) and what thickness of fluororesin l? 2 (1a) (lb), and may also be a resin film (la) (lb) on a fluorine resin film formed from a fluororesin other than tetrafluoroethylene (PTFE)6
The glass fiber layer (13) used in this example has a diameter of 3
It is made from micron glass fibers and is the thinnest glass fiber on the market, but it is extremely flexible and nonflammable, making it ideal for medium and D membrane materials. or,
Fluororesin 1 coating the glass fiber layer (13)
The 1!2(la)(lb) layer has not only water resistance but also heat resistance and strong resistance to mold and microorganisms.

As shown in figure m1, these fluororesin films (I
a) (lb) are overlapped with a joint surface (10) of a predetermined width, and then the cut end surface (1) of the outer fluororesin membrane (la) is
A fluororesin (2), in this example, fluorinated ethylene polypropylene (FEP), is applied to cover 1).
It should be formed into a rod shape (2a) with a diameter of a++a (see Figure 3), and then the ironing device (4
), etc., and heat-sealed with fluororesin 11Q (1a).
(lb) and this rod-shaped fluororesin (2a) are integrally hermetically joined.

Fig. 4 is a perspective view showing a state in which the rod-shaped fluorine resin (2a) is in a flat state (2d) after being hermetically joined, and Fig. 5 is a perspective view showing the rod-shaped fluorine resin (2d) in a flat state (2d). Arranged so as to cover the joint end surface (11) of the resin film (1a).
6 is a sectional view taken along the line AA in FIG. 4. FIG.

The reason why the rod-shaped fluororesin (2a) covering the joint end surface (+1) of the outer fluororesin membrane (1a) is formed from fluorinated ethylene polypropylene (FEP) fluororesin (2) is because it is a base resin. (2) adheres to the two fluororesin films (la) (lb) with good bonding efficiency, and at the same time, the fluororesin (2d) deformed in the plane also connects to the two fluororesin films (la) (lb). This is to take advantage of the fact that fluororesins are exposed to similar environments, and the water resistance and self-cleaning properties unique to fluororesins allow them to be easily washed away by rain or the like even if dirt gets on the surface.

The diameter and length of the rod-shaped fluororesin (2a) to be used may be appropriately determined depending on the size and thickness of the fluororesin membranes (Ia) (lb) to be bonded or the size of the entire membrane body.

As shown in the cross-sectional views of FIGS. 2 and 6, the fluororesin membrane d) is made into a flat state by sealing the joint end surface (11) of the two fluororesin membranes (la) and (lb). Due to the water-resistant protective action of the coating layer (12), the construction is such that rainwater and the like do not enter through the joint end surface (11).

In addition, as shown in the embodiment of FIG. 7 if necessary.

The joint end surface (11) of the lower fluororesin membrane (lb) is also covered with a similar rod-shaped fluororesin (2a), and the two rod-shaped fluororesin (2a) are combined and integrally heat-sealed in the same manner. Accordingly, for example, water generated inside the membrane body can be prevented from entering the glass fiber layer (13), and further effects can be achieved. Figure 8 is the 7th
FIG. 3 is a sectional view showing a state where the embodiment shown in the figure is heat-sealed and hermetically joined.

In this example, two sheets of fluororesin Il,! (la) (lb
), but of course the fluororesin film (l
The number of a) (tb) is not limited to two, but it is also possible to use more than two rod-shaped fluororesin (2a), and two or more rod-shaped fluororesin (2a) may be used at one joint end surface (11).

The shape of the fluororesin (2) is not limited to the rod-shaped fluororesin (2a), but may be, for example, a quadrangular prism or other polyhedron, as long as there is enough to reliably cover the joint end surface (11).

In Figure 9, this fluororesin (2) is used as a film-like fluororesin (2b), and the joint end surface (11) of the outer fluororesin membrane (Ia) is connected to the −L surface and a part of the lower surface of the fluororesin membrane (la). In another embodiment, the fluororesin membrane (la) (lb) and the film-like fluororesin (2b) are integrally heat-sealed. It is a perspective view, and FIGS. 10 and 11 are a front view and a sectional view after the heat sealing, respectively, showing a state in which the parts are integrally heat-sealed using an iron or the like (4).

Fig. 12 shows another embodiment in which the fluororesin (2) is made into a molded product (2c) with a substantially U-shaped cross section, and Figs. 13 and 14 show the embodiment of Fig. FIG. 2 is a front view showing a state of heat sealing and a sectional view after the heat sealing.

In the embodiments shown in FIG. 9 and below, the fluororesin (2) is molded to have a substantially U-shaped cross section so that it can reliably cover the joint end surface (11) of the fluororesin membrane (1a). , more effective against intrusion of rainwater, etc.

Of course, even in this case, the inner fluororesin film (l
The joint end surface (11) in b) is also covered with a similar substantially U-shaped fluororesin (2d), and is also integrally heat-sealed in the same way to prevent glass fibers such as water generated inside the membrane body. Intrusion into layer (13) can also be prevented.

(Effects of the Invention) As described in detail below, the present invention provides a bonding surface of two or more membranes made of glass fiber cloth coated with fluororesin. The bonded end surface is placed so as to be covered with fluororesin, and then the +NiNi film material and fluororesin are integrally heat-sealed from above and below to achieve a close bond, so rainwater etc. from the bonded end surface of the glass fiber cloth is prevented. It has the remarkable effect of preventing invasion, preventing the strength of the glass fiber cloth of the membrane material from weakening, and even preventing deterioration of the strength of the membrane as a whole.

In addition, the fluororesin prevents rainwater from accumulating in the glass fiber layer of the glass fiber cloth, forming water droplets within the glass fiber layer and reducing the translucency of the membrane material, as seen in conventional bonded structures. It is possible to reliably eliminate the disadvantage that the appearance is undesirable due to water droplets becoming large and catching people's attention.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the bonding structure of the fluororesin film in the membrane body according to the present invention, FIG. 2 is a cross-sectional view of the fluororesin film, and FIG. A perspective view showing a state in which the resin is formed into a rod shape and arranged, Fig. 4 is a perspective view showing the state after heat sealing, and Fig. 5 shows a state in which the rod-shaped fluororesin is arranged and heat sealed from the top. Front view, No. 6 [A is a sectional view taken along the line A-A in FIG. The figure is a cross-sectional view after heat sealing, Figure 9 is a perspective view of another example in which the fluororesin is formed into a film, and Figures 1O and 11 are ironing of the fluororesin according to the example of Figure 9. Fig. 12 is a front view showing a state of heat-sealing and a sectional view after bonding, and Fig. 12 is another embodiment in which base resin is molded with a substantially U-shaped cross section and heat-sealed. Perspective view of 13th
14 are a 1F diagram showing a state in which the fluororesin according to the embodiment of FIG. 9 is heat-sealed, and a cross-sectional view after the bonding, and FIG. 15 is a cross-sectional view showing a conventional technique. Explanation of symbols: la, lb, ..., Fluororesin film, 2.2a, 2b, 2c, 2d, ... -y y Base resin. 10,..., joint surface, 11. , , joint end surface, +2.
, , , fluorine resin coating layer, +3. ,,,,
, glass fiber layer. Patent applicant: Taiyo Chogyo Co., Ltd. , Go to Figure 2 Kari V-12! 'Is 3 Figure @ Figure 5 ↓ No. 60 1b' Figure 7 Section 8 F, : : : Curvature : Te (-- C,';90;:5ion;;;S +
+ ・ and 2b △′S13[G1 Fig. 14 (1b Fig. 15

Claims (4)

[Claims] (1) In a membrane body whose membrane material is glass fiber cloth coated with a fluororesin, the joint end surfaces of two or more of the membrane materials are arranged so as to be covered with the fluororesin, and then the membrane A bonded structure of glass fiber cloth coated with fluororesin in a membrane body that is tightly bonded by integrally heat-sealing the material and fluororesin from the top and bottom. (2) A joining structure of glass fiber cloth coated with a fluororesin in a membrane body according to claim 1, wherein the fluororesin covering the joint end surface is formed into a rod shape. (3) A joining structure of glass fiber cloth coated with a fluororesin in a membrane body according to claim 1, wherein the fluororesin covering the joint end surface is formed in the form of a film. (4) The glass fiber cloth coated with a fluororesin in the membrane body according to claim 1, wherein the fluororesin covering the joint end surface is a molded article having a substantially U-shaped cross section. joint structure.