JP7053029B2 - Net sheet for screen doors - Google Patents

Description

The present invention relates to a screen sheet for a screen door, which is suitable for a roll screen door in which a screen sheet such as an insect repellent net can be wound into a roll.

As a roll screen door configured so that the screen sheet can be wound into a roll, Patent Document 1 describes a roll screen door in which a storage case for the screen sheet is provided in a screen door frame that supports the screen sheet. In the roll screen door described in Patent Document 1, the storage case is arranged on the side portion of the screen door frame, and the screen sheet is wound up along the horizontal direction.

Japanese Unexamined Patent Publication No. 2018-80535

However, in the roll screen door described in Patent Document 1, since the storage case is provided in the screen door frame, if the storage case is not compact, it protrudes from the screen door frame to the indoor side and the design of the roll screen door is deteriorated. In order to make the storage case compact, it is necessary to wind the net sheet so as not to be bulky, and the net sheet needs to have good flexibility in the winding direction.

On the other hand, when the screen sheet has good flexibility in the winding direction and is flexible, when the screen sheet is also flexible in the direction orthogonal to the winding direction, a slight wind pressure causes. The screen sheet is easily deformed and the appearance of the roll screen door is spoiled. Therefore, in the direction orthogonal to the winding direction, the net sheet is preferably highly rigid in order to enhance the wind pressure resistance.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a screen sheet for a screen door that can achieve both good storability and good wind pressure resistance.

The screen sheet for a screen door disclosed in the present application is formed from a woven fabric and is wound along a direction in which one of a plurality of warps and a plurality of wefts extends. In the screen sheet for screen doors, one of the plurality of warps and the plurality of wefts is formed from a first resin filament. The other of the plurality of warps and the plurality of wefts is formed from a second resin filament. The second resin filament is formed of a core-sheath structural fiber that is a monofilament and has a core portion and a sheath portion having a melting point lower than that of the core portion. The first resin filament is a monofilament having a uniform melting point and is formed of a resin material having a melting point higher than that of the sheath portion of the second resin filament. Are heat-fused together .

In the net sheet for a net door disclosed in the present application, the plurality of warps are each formed of the plurality of the first resin filaments or the plurality of the second resin filaments, and the plurality of warps are each one of the above. The plurality of first resin filaments or the plurality of second resin filaments formed from the second resin filament or one said first resin filament and forming each of the plurality of warps at each of the intersections. The plurality of first resin filaments or the plurality of second resin filaments, which are arranged in the weft direction in which the plurality of wefts extend so as not to overlap each other and to form a gap, form each of the plurality of warps. Two adjacent resin filaments sandwich the one second resin filament or the one first resin filament forming each of the plurality of wefts.

In the net sheet for a net door disclosed in the present application, the plurality of warps are each formed from the plurality of first resin filaments, and the plurality of warps are each formed from the one second resin filament. At each intersection, one of the plurality of first resin filaments forming each of the plurality of warps is on one side with respect to the one second resin filament forming each of the plurality of warps. The rest is disposed on the other side of the one second resin filament.

In the screen sheet for screen doors disclosed in the present application, the second resin filament has a plurality of the core portions and one sheath portion including the plurality of core portions.

In the net sheet for a net door disclosed in the present application, the plurality of warp threads are each formed of three said first resin filaments or three said second resin filaments , and the plurality of weft threads are each formed of three weft threads. The three first resin filaments, or the three second ones, which are formed from one said second resin filament or one said first resin filament and form each of the plurality of warp threads. The thickness of each resin filament is 20 to 150 denier, and the total thickness of the three first resin filaments or the three second resin filaments forming each of the plurality of warp threads is . The thickness of the one second resin filament or the one first resin filament forming each of the plurality of wefts is 60 to 450 denier, and is 30 to 250 denier .

According to the screen sheet for a screen door of the present invention, both good storability and good wind pressure resistance can be achieved at the same time.

It is a perspective view which shows the net sheet for the screen door which concerns on embodiment. It is a partially enlarged view which shows the net sheet for the screen door which concerns on embodiment. It is a perspective view which shows the 2nd resin filament which concerns on embodiment. It is a partially enlarged view which shows the screen sheet for the screen door which concerns on other embodiment. It is a perspective view which shows the 2nd resin filament which is formed from a plurality of core-sheath structure fibers.

Hereinafter, the screen sheet for a screen door according to the embodiment of the present invention will be described in detail with reference to the drawings. Since the embodiments described below are preferable specific examples for carrying out the present invention, various technical restrictions are made, but the present invention particularly limits the invention in the following description. Is not limited to this embodiment unless otherwise specified.

<Embodiment>
[Basic principle]
The basic principle of the screen sheet for a screen door according to the embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a perspective view showing a screen sheet for a screen door according to an embodiment. FIG. 2 is a partially enlarged view of a screen sheet for a screen door according to an embodiment. FIG. 3 is a perspective view showing the second resin filament according to the embodiment.

As shown in FIGS. 1 and 2, the net sheet 1 according to the embodiment is formed of a woven fabric and has a plurality of warp threads 2 and a plurality of weft threads 3. The plurality of warp threads 2 are arranged in parallel at regular intervals, and the plurality of warp threads 3 are also arranged in parallel at regular intervals. The net sheet 1 is wound along a direction in which one of the plurality of warp threads 2 and the plurality of weft threads 3 extends. One of the plurality of warps 2 and the plurality of wefts 3 is formed from the first resin filament 10, and the other of the plurality of warps 2 and the plurality of wefts 3 is formed from the second resin filament 20.

The net sheet 1 in the embodiment corresponds to a screen sheet for a screen door within a claim, and the net sheet 1 is along a weft direction X1 in which a plurality of wefts 3 among a plurality of warp threads 2 and a plurality of weft threads 3 extend. It is taken up. Therefore, in the embodiment, the plurality of wefts 3 are formed from the first resin filament 10, and the plurality of warps 2 are formed from the second resin filament 20. In the embodiment, the first resin filament 10 is a monofilament, and the second resin filament 20 is also a monofilament.

As shown in FIG. 3, the second resin filament 20 is formed of a core-sheath structural fiber having a core portion 21 and a sheath portion 22. The melting point of the sheath portion 22 is lower than the melting point of the core portion 21. In the embodiment, the core 21 is formed of a polyester having a relatively high melting point, and the melting point T1 is about 250 ° C. The sheath portion 22 is made of polyester having a relatively low melting point, and has a melting point T2 of 170 to 210 ° C.

On the other hand, the first resin filament 10 is not a core-sheath structure fiber and has a uniform melting point. The melting point of the first resin filament 10 is higher than the melting point of the sheath portion 22. In the embodiment, the first resin filament 10 is formed of polyester fiber, and the melting point T4 of the first resin filament 10 is about the same as the melting point T1 of the core portion 21.

As described above with reference to FIGS. 1 to 3, according to the net sheet 1 according to the embodiment, the net sheet 1 is a weft in which a plurality of wefts 3 out of a plurality of warp threads 2 and a plurality of weft threads 3 extend. It is wound along the direction X1. The plurality of wefts 3 are formed from the first resin filament 10, and the plurality of warps 2 are formed from the second resin filament 20. The second resin filament 20 is formed of a core-sheath structure fiber having a core portion 21 and a sheath portion 22, and the melting point T2 of the sheath portion 22 is lower than the melting point T1 of the core portion 21. Further, the first resin filament 10 is formed of a resin material having a melting point higher than that of the sheath portion 22.

As described above, since the plurality of warps 2 are formed from the core-sheath structure fibers, the rigidity of the plurality of warps 2 can be increased by heating the net sheet 1 to a predetermined temperature T3. The predetermined temperature T3 is lower than the melting point T1 of the core portion 21 and higher than the melting point T2 of the sheath portion 22. When the net sheet 1 is heated to a predetermined temperature T3, the sheath portion 22 is melted, and the plurality of warp threads 2 are formed of a fiber reinforced plastic having the sheath portion 22 as a matrix and the core portion 21 as a reinforcing material. Therefore, the rigidity of the plurality of warp threads 2 can be increased, the rigidity of the net sheet 1 can be increased in the warp direction X2, and good wind pressure resistance can be imparted to the net sheet 1.

On the other hand, the plurality of wefts 3 are formed from the first resin filament 10 having a melting point higher than that of the sheath portion 22. Since the melting points of the plurality of wefts 3 are higher than those of the sheath portion 22, even if the net sheet 1 is heated to a predetermined temperature T3, the plurality of wefts 3 do not melt, and the flexibility provided in the original first resin filament 10 is maintained. Will be done. Therefore, in the weft direction X1 in which the net sheet 1 is wound, good flexibility can be imparted to the net sheet 1, and good storage property can be imparted to the net sheet 1. As described above, the net sheet 1 can have both good storability and good wind pressure resistance.

In the embodiment, it is assumed that the net sheet 1 is wound along the horizontal direction in the roll screen door, that is, it is used as a so-called horizontal screen door net, and the plurality of wefts 3 are made flexible. It is formed from a good first resin filament 10 and a plurality of warp threads 2 are formed from a second resin filament 20 that can be made highly rigid by heat processing. When the roll screen door is installed, for example, at the doorway of the balcony, the screen sheet 1 becomes longer in the vertical direction and shorter in the horizontal direction. For example, the length in the vertical direction needs to be about 2800 to 3000 mm at the maximum, but the length in the horizontal direction is sufficient to be about 1500 mm.

On the other hand, the woven fabric is more expensive as the weft direction is larger. The same applies to the insect repellent net, and the shorter the net sheet 1 in the weft direction X1, the lower the manufacturing cost can be. Therefore, when the net sheet 1 is wound along the horizontal direction, the horizontal direction in the roll screen door is changed to the weft direction in the net sheet 1 by using the first resin filament 10 having good flexibility for the plurality of wefts 3. It can be matched with X1 and the manufacturing cost of the net sheet 1 can be reduced. It should be noted that the net sheet 1 can of course be wound upward in a roll screen door, that is, it can be used as a so-called vertical screen door net. When the net sheet 1 is used as a net for a vertical screen door, the direction in which the first resin filament 10 extends in the net sheet 1 coincides with the vertical direction in the roll screen door.

Further, as described with reference to FIGS. 1 to 3, according to the net sheet 1 according to the embodiment, since the first resin filament 10 and the second resin filament 20 are formed from the monofilament, the net sheet The appearance of 1 can be improved. The multifilament is made by twisting a plurality of fibers and has a large surface unevenness as compared with the monofilament. Therefore, when the net sheet 1 is formed from the multifilament, the appearance of the net sheet 1 is deteriorated. On the contrary, when the net sheet 1 is formed of monofilament, the net sheet 1 can be given a clear appearance, and the high-class feeling of the net sheet 1 can be improved.

Next, the net sheet 1 according to the embodiment will be described in more detail with reference to FIGS. 2 and 3. In the embodiment, the plurality of warps 2 and the plurality of wefts 3 are heat-sealed to each other at each intersection 4. As described above, the second resin filament 20 has a core portion 21 and a sheath portion 22 having a low melting point. Therefore, by heating the net sheet 1 to a predetermined temperature T3 at which the sheath portion 22 melts, the plurality of warp threads 2 and the plurality of weft threads 3 can be heat-sealed at each intersection 4.

As described above with reference to FIGS. 2 and 3, according to the net sheet 1 according to the embodiment, the plurality of warp threads 2 and the plurality of weft threads 3 are heat-sealed at each intersection 4. Therefore, it is possible to prevent the positions of the intersections 4 from being displaced by an external force, and it is possible to maintain a good appearance of the net sheet 1 for a long period of time. Further, in the second resin filament 20, the sheath portion 22 is melted and the sheath portion 22 is morphologically fused with the first resin filament 10, so that the thickness of the net sheet 1 is increased at each intersection 4. It can be suppressed, the unevenness of the net sheet 1 can be reduced, and the feel and appearance of the net sheet 1 can be improved. Further, at each intersection 4, foreign matter such as dust can be prevented from being caught between the warp and weft 3 and the foreign matter can be prevented from adhering to the net sheet 1. As a result, the net sheet 1 is less likely to get dirty, maintainability is improved, and a good appearance of the net sheet 1 can be maintained for a long period of time.

When the plurality of warp threads 2 and the plurality of weft threads 3 are heat-sealed, the heating step for heat fusion is performed on the loom without moving the net sheet 1 from the loom as part of the weaving process. Is preferable. By performing the heating step on the loom, it is not necessary to move the net sheet 1 before heat fusion, it is possible to prevent the intersections 4 from shifting before heat fusion, and the appearance of the net sheet 1 can be improved. However, the heating step for heat fusion may be performed in a separate step from the weaving step as long as it is possible to effectively prevent the deviation of each intersection 4.

Next, with reference to FIG. 2, the plurality of warp threads 2 will be described in more detail. Each of the plurality of warp threads 2 is formed of a plurality of first resin filaments 10 or a plurality of second resin filaments 20. When the plurality of warps 2 are formed from the plurality of first resin filaments 10, the plurality of first resin filaments 10 are arranged in the weft direction X1 so as not to overlap each other and to form a gap. The same applies when the plurality of warp threads 2 are formed from the plurality of second resin filaments 20. In the embodiment, as shown in FIG. 2, each of the plurality of warp threads 2 is formed of three second resin filaments 20 which are core-sheath structure fibers, and each of the plurality of warp threads 3 is one. It is formed from the first resin filament 10 of the above. Further, in the embodiment, when the plurality of warp threads 2 are each formed from the plurality of second resin filaments 20, at each intersection 4, two second of the plurality of second resin filaments 20 adjacent to each other are used. The resin filament 20 sandwiches the first resin filament 10 in between.

As described above with reference to FIG. 2, according to the embodiment, two adjacent second resin filaments 20 sandwich the first resin filament 10 at each intersection 4. Therefore, the positions of the intersections 4 are less likely to shift, the positions of the intersections 4 can be prevented from shifting before heat fusion, and the appearance of the net sheet 1 can be improved.

When the plurality of warps 2 are each formed by the plurality of first resin filaments 10, two adjacent first resin filaments 10 sandwich the second resin filament 20 in between. Similarly, in this case as well, the positions of the intersections 4 are less likely to shift, the positions of the intersections 4 can be prevented from shifting before heat fusion, and the appearance of the net sheet 1 can be improved. However, as described above, when the net sheet 1 is wound along the horizontal direction, it is economically preferable that the net sheet 1 can be made highly rigid in the warp direction X2, and each of the plurality of warp threads 2 is made of a core-sheath structure fiber. By forming from a plurality of second resin filaments 20, the manufacturing cost of the net sheet 1 can be reduced.

Hereinafter, preferable sizes of the first resin filament 10 and the second resin filament 20 will be described. As described above, in the embodiment, since it is necessary to increase the rigidity of the warp 2, it is basically preferable that the warp 2 is thicker than the weft 3.

That is, when the plurality of warps 2 are each formed of three second resin filaments 20, the thickness L1 of the second resin filament 20 is preferably 20 to 150 denier, preferably 30 to 140 denier. More preferably, it is more preferably 50 to 120 denier. The total thickness L2 of the three second resin filaments 20 is preferably 60 to 450 denier, more preferably 120 to 420 denier, and even more preferably 150 to 360 denier. Even when the plurality of warps 2 are each formed from the three first resin filaments 10, the preferable thickness range of the first resin filament 10 and the preferable total thickness of the three first resin filaments 10 are obtained. The range of the warp corresponds to the above range.

Further, when the plurality of wefts 3 are each formed from one first resin filament 10, the thickness L3 of the first resin filament 10 is preferably 30 to 250 denier, preferably 40 to 200 denier. More preferably, it is more preferably 50 to 150 denier. Even when the plurality of warp and wefts 3 are each formed from one second resin filament 20, the preferred thickness range of the second resin filament 20 corresponds to the above range.

By setting the thickness L1, the total thickness L2, and the thickness L3 within the above ranges, the air permeability of the net sheet 1 can be improved and the air permeability can be improved. In particular, in order to improve the insect repellent performance, when the size of the mesh in the net sheet 1 is about 24 mesh, the thickness L1, the total thickness L2, and the thickness L3 are set in the above ranges. The visibility when looking through the sheet 1 is improved, and the viewability can be improved.

Further, since the first resin filament 10 and the second resin filament 20 are heat-sealed at each intersection 4, it is preferable that the first resin filament 10 and the second resin filament 20 are formed from a resin material in which a dye is kneaded. It is preferable that both the core portion 21 and the sheath portion 22 are formed of a resin material in which a dye is kneaded.

Further, the first resin filament 10 and the second resin filament 20 are preferably contained with a light resistant agent in order to enhance light resistance, and are preferably coated by dipping, for example, in order to enhance weather resistance and wind pressure resistance. .. As the material for covering the net sheet 1, acrylic, polyester and melamine are preferable, and acrylic and polyester are more preferable in that they do not emit an odor.

Next, another embodiment according to the present invention will be described with reference to FIG. FIG. 4 is a partially enlarged view of the net sheet 1A according to another embodiment. In the above-described embodiment, assuming that the net sheet 1 is wound along the horizontal direction, a plurality of warp threads 2 are formed from the second resin filament 20 in order to reduce the manufacturing cost. Is assumed that the net sheet 1A is wound upward, and a plurality of warp threads 2A are formed from the first resin filament 10, and the plurality of warp threads 2A are each made of satin weave in order to further improve the storability. .. The direction in which the net sheet according to the present invention is wound is not particularly limited. Therefore, the net sheet 1A according to the present embodiment may be wound up in the horizontal direction.

When the net sheet 1A is wound upward, it is necessary to match the vertical direction of the roll screen door with the direction in which the first resin filament 10 extends in order to improve the storability. That is, in order to improve the storability, it is necessary to match the vertical direction and the warp direction X2. Therefore, when the net sheet 1A is wound upward, good storage can be realized by forming a plurality of warp threads 2A from the first resin filament 10.

Further, by forming the plurality of wefts 3A from the second resin filament 20, the plurality of wefts 3A can be made highly rigid by thermal processing, and good storability and good wind pressure resistance can be realized. That is, when the net sheet 1A is wound upward, a plurality of warp threads 2A are formed from the first resin filament 10 in order to improve the storage capacity of the warp direction X2, and at the same time, in the weft direction X1. In order to realize high rigidity, a plurality of wefts 3A need to be formed from the second resin filament 20 which is a core-sheath structure fiber.

Further, in the above-described embodiment, the plurality of warps 2 are each formed of three second resin filaments 20, but in the present embodiment, each of the plurality of warps 2A has five first resin filaments. Formed from 10. The net sheet 1A is made of a red weave, and at each intersection 4, only one of the five first resin filaments 10 is located on one side of the net sheet 1A. The other four first resin filaments 10 are located on the other side of the net sheet 1A at each intersection 4. The one side of the net sheet 1A is the back surface side of the paper surface of FIG. 4, and the other surface side of the net sheet 1A is the front surface side of the paper surface of FIG.

As described above, when the net sheet 1A is made of satin weave, when the net sheet 1A is wound, if one side of the net sheet 1A is the inner surface and the other surface is the outer surface, the winding becomes easier and further. It can be expected to improve the storage capacity. Since only one first resin filament 10 is arranged on one surface side of the net sheet 1A, when the net sheet 1A is wound with the one surface as the inner side surface, the first resin filament to be bent is formed. This is because the number of 10 is reduced and it becomes easier to wind up.

The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 4). However, the present invention is not limited to the above embodiment, and can be implemented in various embodiments without departing from the gist of the present invention (for example, (1) to (2) shown below).

(1) As described with reference to FIGS. 1 to 4, in each of the above embodiments, the first resin filament 10 and the second resin filament 20 are formed from a monofilament, but the first resin filament 10 , The second resin filament 20 may be formed from a multifilament. However, as described above, in order to obtain a good appearance, the first resin filament 10 and the second resin filament 20 are preferably formed from a monofilament, and the first resin filament 10 is particularly preferably a monofilament. .. Regarding the second resin filament 20, it is possible to obtain a good appearance even if the second resin filament 20 is formed from a plurality of core-sheath structure fibers. However, even in that case, it is preferable that the plurality of core-sheath structure fibers are fused by thermal processing to form a monofilament so as to look like a single thread.

FIG. 5 is a perspective view showing a second resin filament 20A formed of a plurality of core-sheath structure fibers as a material. As shown in FIG. 5, the second resin filament 20A has a plurality of core portions 21A and one sheath portion 22A. The second resin filament 20A is formed of a core-sheath structure fiber having a number corresponding to the number of core portions 21A as a material, and one sheath portion 22A has heat in each sheath portion of a plurality of core-sheath structure fibers. Fused by processing, the plurality of core-sheath structure fibers form a monofilament.

By fusing each sheath portion of the plurality of core-sheath structure fibers by thermal processing, the second resin filament 20A has no gap between the fibers and has a second resin filament 20 formed from one core-sheath structure fiber. Similarly, the adhesion of foreign matter can be suppressed, the maintainability is improved, and a good appearance can be maintained. Further, since the sheath portion 22A is formed by heat fusion of each sheath portion in the plurality of core-sheath structural fibers, it is possible to further increase the rigidity and further improve the wind pressure resistance.

(2) As described with reference to FIGS. 1 to 5, in each of the above embodiments, the first resin filament 10 and the second resin filament 20 are formed of polyester, but the first is not limited thereto. The resin filament 10 and the second resin filament 20 can also be formed of polypropylene, polyethylene, or vinylon. It is considered that polypropylene, polyethylene, and vinylon can have both good storability and good wind pressure resistance when used for the first resin filament 10 and the second resin filament 20, similarly to polyester.

1, 1A ... net sheet 2, 2A ... warp 3, 3A ... weft 4 ... intersection 10 ... first resin filament 20, 20A ... second resin filament 21, 21A ... core 22, 22A ... sheath T1 ... core Melting point T2 ... Melting point of sheath T3 ... Predetermined temperature T4 ... Melting point of first resin filament L1 ... Thickness of second resin filament L2 ... Total thickness of three second resin filaments L3 ... Thickness of first resin filament X1 ... Weft direction X2 ... Warp direction

Claims (5)

A screen sheet for screen doors, which is formed from a woven fabric and is wound along a direction in which one of a plurality of warps and a plurality of wefts extends.
The plurality of warps and one of the plurality of warps are formed from a first resin filament.
The other of the plurality of warps and the plurality of wefts is formed of a second resin filament.
The second resin filament is formed of a core-sheath structural fiber that is a monofilament and has a core portion and a sheath portion having a melting point lower than that of the core portion.
The first resin filament is a monofilament having a uniform melting point, and is formed of a resin material having a melting point higher than that of the sheath portion of the second resin filament .
The screen sheet for a screen door, in which the plurality of warps and the plurality of wefts are heat-sealed to each other at each intersection . The plurality of warps are each formed of the plurality of the first resin filaments or the plurality of the second resin filaments , and each of the plurality of warps is one said second resin filament or one said said. Formed from the first resin filament,
At each of the intersections, the plurality of first resin filaments or the plurality of second resin filaments forming each of the plurality of warps are not overlapped with each other and the plurality of wefts are formed so as not to form a gap. Are arranged in the extending weft direction, and the plurality of first resin filaments or the two adjacent two of the plurality of second resin filaments forming each of the plurality of warps form each of the plurality of wefts. The net sheet for a net door according to claim 1 , wherein the one second resin filament or the one first resin filament to be formed is sandwiched between them. The plurality of warps are each formed from the plurality of first resin filaments, and the plurality of warps are each formed from the one second resin filament.
At each of the intersections, one of the plurality of first resin filaments forming each of the plurality of warps is on one side with respect to the one second resin filament forming each of the plurality of wefts. The screen sheet for a screen door according to claim 2, wherein the rest is arranged on the other side of the one second resin filament. The screen sheet for a screen door according to any one of claims 1 to 3, wherein the second resin filament has a plurality of the core portions and one sheath portion including the plurality of core portions. .. Each of the plurality of warps is formed of three said first resin filaments or three said second resin filaments .
Each of the plurality of warp and wefts is formed of one said second resin filament or one said first resin filament.
The thickness of the three first resin filaments or the three second resin filaments forming each of the plurality of warps is 20 to 150 denier , respectively.
The total thickness of the three first resin filaments or the three second resin filaments forming each of the plurality of warps is 60 to 450 denier .
Any of claims 1 to 4 , wherein the thickness of the one second resin filament or the one first resin filament forming each of the plurality of wefts is 30 to 250 denier. Or the net sheet for screen doors described in item 1.

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