JP2008144330A - Mesh sheet having holes - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mesh sheet having holes, which has sufficient strength and a plurality of holes. <P>SOLUTION: The mesh sheet 10 includes a plurality of strip like warp strands 11 and 51 arranged so that the length directions are parallel to each other and a weft strands 12 provided so as to bridge between adjacent warp strands 11 and 51, and the warp strands 11 and 51 have a plurality of holes 15a and 15b and these holes 15a and 15b are formed simultaneously with weaving of warp strands 11 and 51. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mesh sheet with holes.

Mesh sheets are used for ground reinforcement grids and protective nets.
As a material for these mesh sheets, flexibility and followability are required, and therefore fibers that are excellent in these and excellent in strength are generally used.

  As such a mesh sheet, for example, a predetermined synthetic fiber thick yarn substantially linearly in the warp direction with respect to the mesh of each wale of a plurality of wales composed of a plurality of rows of knitting yarns of a predetermined thickness A warp group in which the knitting yarns are knitted and connected between the respective knitting yarns by a spun yarn, and one or more rows of synthetic fiber thick yarns of a predetermined thickness that are knitted and inserted substantially linearly with respect to the warp group. A civil engineering / architectural grid sheet is disclosed which constitutes a base of a grid structure composed of a group of wefts composed of a plurality of courses and is impregnated with a predetermined resin or the like (see, for example, Patent Document 1). .

By the way, in recent years, in order to attach the mesh sheet to a wall surface, a mesh sheet with a hole for driving a pile or the like is required.
Therefore, for example, when the lattice sheet is used, the lattice sheet is subjected to perforation.
Japanese Utility Model Publication No. 02-17030

  However, when the perforated process is performed on the lattice sheet described in Patent Document 1, the strength of the lattice sheet itself tends to be insufficient.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a perforated mesh sheet having a sufficient strength and having a plurality of holes.

  The inventors of the present invention have intensively studied to solve the above-described problems. As a result, the mesh sheet with holes is configured to include warp strands and weft strands made of a fiber material, and by providing holes when the warp strands are knitted. The present inventors have found that the above problems can be solved, and have completed the present invention.

  That is, the present invention comprises (1) a plurality of strip-shaped warp strands arranged so that their length directions are parallel, and weft strands constructed between adjacent warp strands, and the warp strands have a plurality of holes. And the holes are formed at the same time as the knitting of the warp strands.

  This invention exists in the mesh sheet | seat of the said (1) description which has several holes by which the (2) warp strand was arrange | positioned at equal intervals.

  The present invention resides in (3) the mesh sheet with holes as described in (1) above, wherein the weft strands are knitted as part of the structure of the warp strands.

  The present invention resides in the mesh sheet with holes according to the above (3), wherein the holes are provided at the intersections of (4) warp strands and weft strands knitted at predetermined positions of the warp strands.

  This invention exists in the mesh sheet with a hole of the said (1) description further provided with the bridge part provided on the diagonal of the space | gap part formed by (5) warp strand and weft strand.

  This invention exists in the mesh sheet with a hole of the said (5) description with which the bridge part is knitted as a part of structure | tissue of a warp strand (6).

  The present invention is (7) a reinforcement in which warp strands reinforce a connecting portion between a warp formed of a plurality of warps made of fibers in a longitudinal direction by chain knitting, a connecting yarn connecting the plurality of wales, and a weft strand. The mesh sheet with holes according to the above (1), which is a knitted fabric knitted with fibers.

  This invention exists in the mesh sheet with a hole of the said (1) description as which (8) warp strand is resin-processed.

  This invention exists in the mesh sheet with a hole of the said (1) description whose (9) weft strand is a some string.

  In addition, as long as the objective of this invention is met, the structure which combined said (1)-(9) suitably is also employable.

Since the mesh sheet with holes of the present invention includes warp strands and weft strands laid between adjacent warp strands, for example, even if the mesh sheet with holes is pulled in the length direction of the weft strands, The force transmitted from the strand to the warp strand is evenly distributed.
For this reason, the said mesh sheet with a hole has sufficient intensity | strength.

In the above-mentioned mesh sheet with holes, since the holes are formed simultaneously with the knitting of the warp strands, the strength does not decrease even though the warp strands have a plurality of holes.
Thereby, the said mesh sheet with a hole becomes applicable to various uses.
In addition, in the said mesh sheet with a hole, since a hole making process is unnecessary, manufacturing cost can also be reduced.

  When the mesh sheet with holes of the present invention has a plurality of holes in which warp strands are arranged at equal intervals, for example, when used as an illumination net, illumination lamps can be attached at equal intervals, and concrete spraying When used as a sheet to be applied to the surface, the sheet can be fixed to the glue surface with a good balance.

In the mesh sheet with holes of the present invention, when the weft strands are knitted as part of the structure of the warp strands, the warp strands and the weft strands are firmly bonded, and the strength is more excellent.
Further, since weft strands can be formed simultaneously when weaving warp strands, the perforated mesh sheet of the present invention can be produced efficiently.

  The perforated mesh sheet of the present invention has excellent strength when a hole is provided at the intersection of a warp strand and a weft strand knitted at a predetermined position of the warp strand.

When the mesh sheet with holes of the present invention further includes a bridging portion provided on the diagonal line of the gap formed by the warp strands and the weft strands, the strength of the gap in the diagonal direction is excellent.
Therefore, the perforated mesh sheet is excellent in strength not only in the longitudinal direction of the warp strands and the longitudinal direction of the weft strands but also in all the surface directions of the perforated mesh sheet.

In the mesh sheet with holes of the present invention, when the bridge portion is knitted as a part of the structure of the warp strand, the warp strand and the bridge portion are firmly bonded. For this reason, the intensity | strength with respect to a surface direction is more excellent.
Moreover, since a bridge part can be formed simultaneously when weaving warp strands, the perforated mesh sheet of the present invention can be produced efficiently.

  The perforated mesh sheet of the present invention is excellent in stretchability and elasticity when it is a knitted fabric knitted by a plurality of wales formed in the longitudinal direction by chain knitting and connecting yarns connecting the plurality of wales. In addition, the strength in the longitudinal direction of the warp strands is further improved.

  When the weft strand is a plurality of strings, the mesh sheet with holes of the present invention is excellent in strength in the length direction of the weft strand.

  When the perforated mesh sheet of the present invention is resin-processed, the stretchability is impaired, but the strength in the surface direction is extremely excellent.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary.
In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.
Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified.
Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

[First Embodiment]
FIG. 1 is a plan view showing a first embodiment of a mesh sheet with holes according to the present invention.
As shown in FIG. 1, the mesh sheet with holes 10 according to the present embodiment includes a plurality of strip-shaped warp strands 11 and 51 arranged in parallel in the length direction, and adjacent warp strands 11 and 51. And a bridge portion 13 provided on a diagonal line of a gap G formed by the warp strands 11 and 51 and the weft strand 12.

  The perforated mesh sheet 10 is a warp knitted fabric composed of a plurality of wales 11a formed in a chain knitting in the longitudinal direction and connecting yarns (not shown) for connecting the plurality of wales 11a. A strand (hereinafter referred to as “first warp strand” for convenience) 11, a plurality of wales 11 a formed in the longitudinal direction by chain knitting, and a connecting yarn (not shown) for connecting the plurality of wales 11 a, The warp strands (hereinafter referred to as “second warp strands”) 51, which are band-shaped knitted fabrics composed of reinforcing fibers (not shown) that reinforce the connecting portions of the weft strands 12, are alternately arranged. Yes.

At this time, the first warp strands 11 and the second warp strands 51 that are belt-like are arranged so as to be substantially parallel, and between the adjacent first warp strands 11 and the second warp strands 51. Are substantially equally spaced.
Thus, since the 1st warp strand 11 and the 2nd warp strand 51 are knitted fabric, the mesh sheet 10 with a hole concerning this embodiment has the elasticity and elasticity peculiar to knitted fabric.

Both the wale 11a and the connecting yarn are made of fibers, and such fibers are not particularly limited, and examples thereof include synthetic fibers such as polyester fibers, polyethylene fibers, polypropylene fibers, nylon fibers, and aramid fibers.
In addition, these may be used individually by 1 type and may be used in mixture of multiple.
Further, the wale 11a and the connecting yarn may be the same fiber or different fibers.

It is preferable that the space | interval between the said 1st warp strand 11 and the 2nd warp strand 51 is 10-50 mm from a viewpoint of the intensity | strength of the mesh sheet 10 with a hole, weight reduction, and handleability.
Moreover, it is preferable that the width | variety of the 1st warp strand 11 and the 2nd warp strand 51 is 1-500 mm from a viewpoint of intensity | strength and workability | operativity at the time of construction.
Further, in the mesh sheet 10 with holes, the interval between the plurality of weft strands 12 and the interval between the plurality of first warp strands 11 and second warp strands 51 that are arranged in plurality are substantially the same. Is preferred.
That is, the gap G is preferably square.
In this case, the strength is particularly excellent.
Furthermore, the tensile strength in the length direction of the first warp strand 11 and the second warp strand 51 is preferably 1 to 100 kN.
Furthermore, it is preferable that the thickness of the 1st warp strand 11 and the 2nd warp strand 51 is 1-50 mm.
In this case, when the perforated mesh sheet 10 is used as a ground reinforcing grid, pull-out resistance in the soil can be sufficiently exhibited.

  It is preferable that the space | interval between the adjacent weft strands 12 is 10-50 mm from a viewpoint of the intensity | strength of the mesh sheet 10 with a hole, weight reduction, and handleability.

As the reinforcing fibers, those having lower elongation and higher strength than the fibers are used.
Here, in this invention, tensile strength and elongation are the values measured based on JISL1096.

This reinforcing fiber is obtained by using a material having a lower elongation and higher strength than the above fiber.
For example, when the fiber is any one of polyester fiber, polyethylene fiber, polypropylene fiber, and nylon fiber, examples of the material include carbon fiber, vinylon fiber, and aramid fiber.
Among these, an aramid fiber is preferable.

The reinforcing fiber is obtained by using the same material as that of the fiber and adjusting the fineness of the fiber so as to have a low elongation and a high strength.
For example, the same material as the fiber is used, and the fineness of the reinforcing fiber may be 2 to 10 times the fineness of the fiber.
Specifically, the fineness of the reinforcing fiber is preferably 1000 to 10000 dtex.

The reinforcing fiber preferably has an elongation of 20% or less, and preferably 1 to 10%.
When the elongation exceeds 20%, sufficient strength tends not to be obtained as compared with the case where the elongation is within the above range.

The reinforcing fiber preferably has a tensile strength of 500 Nmm ² or more.
When the strength is less than 500 Nmm ² , the strength in the surface direction tends to be insufficient as compared with the case where the tensile strength is within the above range.

That is, in the perforated mesh sheet 10 according to the present embodiment, it is preferable that the elongation of the reinforcing fiber is 20% or less and the strength is 500 N / mm ² or more.
In this case, the perforated mesh sheet 10 is more excellent in strength in the surface direction.

  In the mesh sheet with holes 10 according to the present embodiment, the weft strands 12 are a plurality of cords in which a plurality of fibers are bundled in a straight state without woven or knitting the fibers, and adjacent first warp strands A plurality of the first and second warp strands 51 are installed at substantially equal intervals.

  Thus, in the mesh sheet 10 with a hole which concerns on this embodiment, since the weft strand 12 becomes a several string, it is excellent in the intensity | strength with respect to the length direction of the weft strand 12. FIG.

The weft strands 12 are constructed so as to form a line in a direction perpendicular to the length direction of the first warp strands 11 and the second warp strands 51.
That is, the mesh sheet with holes 10 according to the present embodiment has a lattice structure.
Therefore, even if the weft strand 12 is pulled in the length direction, the force transmitted from the weft strand 12 to the first warp strand 11 and the second warp strand 51 is evenly dispersed. The strength of 10 is more excellent.

  Further, since the gap G is formed by the first warp strand 11 and the second warp strand 51 and the weft strand 12, the mesh sheet with holes 10 is lightweight and excellent in handleability.

Here, the gap G has a rectangular shape, and the length of one side is preferably 10 to 200 mm.
In this case, since the perforated mesh sheet 10 has a sufficiently large gap G, it is lighter and more easily handled.

In the mesh sheet with holes 10 according to the present embodiment, the weft strands 12 are knitted as part of the structure of the first warp strands 11 and the second warp strands 51.
Therefore, in this case, the first warp strand 11 and the second warp strand 51 and the weft strand 12 are firmly bonded, and the strength is further improved.
Moreover, since the weft strand 12 can be formed simultaneously when the 1st warp strand 11 or the 2nd warp strand 51 is knitted, the mesh sheet 10 with a hole which concerns on this embodiment can be manufactured efficiently.

In the mesh sheet 10 with a hole according to the present embodiment, the bridge portion 13 is a plurality of strings in which a plurality of fibers are bundled in a straight state, and is provided on a diagonal line of the gap portion G.
In addition, the fiber here is synonymous with the fiber in the wale 11a mentioned above.
In this case, the perforated mesh sheet 20 is provided with the bridge portion 13 so that the strength of the gap portion G in the diagonal direction is more excellent.

  Therefore, the mesh sheet 10 with a hole according to the present embodiment is not only the length direction of the first warp strand 11 and the second warp strand 51 and the length direction of the weft strand 12 but also the diagonal direction of the gap G. Also excellent in strength.

  In addition, from the viewpoint of the strength of the mesh sheet 10 with holes, the bridge portion 13 is preferably a bundle of 1 to 50 fibers having a fineness of 1000 to 3000 dtex, and is a bundle of 2 to 10 bundles. It is more preferable.

In the mesh sheet with holes 10 according to the present embodiment, the first warp strand 11 has a plurality of holes.
That is, a rectangular hole (hereinafter referred to as “first hole” for convenience) 15 a is provided at the intersection of the first warp strand 11 and the weft strand 12, and the weft strand 12 of the first warp strand 11. A rectangular hole (hereinafter referred to as “second hole” for convenience) 15b is provided in a portion that does not intersect with.

Both the first hole 15a and the second hole 15b are formed simultaneously with the knitting of the warp strands.
Accordingly, in the mesh sheet with holes 10, the first holes 15 a and the second holes 15 b are formed simultaneously with the knitting of the first warp strands 11. Despite having one hole 15a and a plurality of second holes 15b, the strength does not decrease.
Thereby, the said mesh sheet 10 with a hole becomes applicable to various uses.
In addition, in the said mesh sheet 10 with a hole, since a hole making process is unnecessary, manufacturing cost can also be reduced.

The minimum values of the inner diameters of the first hole 15a and the second hole 15b are each preferably 2 mm or more, and more preferably less than 30 mm.
In this case, an illumination lamp and a fastener can be easily and reliably attached to the first hole 15a and the second hole 15b of the mesh sheet 10 with holes.
Moreover, when attaching the mesh sheet 10 with a hole to a ground with a fastener, the mesh sheet 10 with a hole can be fixed reliably by attaching a fastener to the 1st hole 15a and the 2nd hole 15b.

Here, the inner diameter of the first hole 15a means the diameter of a line passing through the center of gravity of the first hole 15a in the surface direction of the first hole 15a.
The same applies to the second hole 15b.
The first hole 15a and the second hole 15b may have the same inner diameter or may be different.

Next, a knitting method of the first hole and the second hole in the first warp strand 11 will be described.
Drawing 2 is an explanatory view for explaining the knitting state of the 2nd hole in the 1st warp strand of the mesh sheet with a hole concerning this embodiment.

In the knitting method of the second holes 15b, first, as shown in FIG. 2, in the mesh sheet with holes 10 according to the present embodiment, a plurality of wales 11a are arranged in a chain knitting that forms a ring in the vertical direction. .
Next, the adjacent wales 11a are connected to each other by continuously passing the connecting thread 11b through the respective rings of the adjacent wales 11a.

  Then, in the wales 11a and 11a ′ located at the center of the warp strand 11, the connecting thread 11b ′ that has passed through the ring of one wal 11a is not connected to the other adjacent wal 11a ′ at a predetermined position. In addition, the inside of the ring of one of the wales 11 a is repeatedly passed in the longitudinal direction of the first warp strand 11.

Next, the adjacent wales 11a and 11a ′ are connected to each other by passing the connecting thread 11b ′ through the ring between the adjacent wales 11a and 11a ′ at a predetermined position.
By passing through such a method, the 2nd hole 15b is formed between adjacent wales 11a and 11a 'located in the center.

  The position where the second hole 15b is provided is not particularly limited, and the second hole 15b can be provided at an arbitrary position. The size of the second hole 15b is also within the ring of the one wale 11a. It can be arbitrarily determined by adjusting the distance of repeated passage in the longitudinal direction.

While repeatedly passing through the ring of one of the wales 11a in the longitudinal direction of the first warp strand 11, that is, while the second hole 15b is being manufactured, the connection on both sides of the second hole 15b is performed. It is preferable to set the runner length of the yarn 11b to be shorter than usual and to increase the tension.
Then, since the inner wales 11a and 11a ′ are respectively pulled outward, the hole 15b having a larger opening can be manufactured.

  Drawing 3 is an explanatory view for explaining the knitting state of the 1st hole in the 1st warp strand of the mesh sheet with a hole concerning this embodiment.

The knitting method of the first hole 15a differs from the second hole 15b in that the knitting method is knitted in the same manner as the second hole 15b, and the weft strand 12 and the bridge portion 13 are knitted in addition to this.
That is, as shown in FIG. 3, the first hole 15a is provided with the weft strand 12 and the bridge portion 13 by knitting the insertion thread 12a from the state where the second hole 15b is provided. .

The insertion thread 12a is passed through the ring of the wale 11a in the same manner as the connecting thread 11b, and when the insertion thread 12a reaches the position of the first hole 15a, the insertion thread 12a passes from the first warp strand to the adjacent second warp strand 51. Then, the second warp strand 51 is knitted by returning to the first warp strand 11.
By repeating this operation, weft strands 12 are formed.
In addition, the space | gap part G is formed by repeating operation which knits this weft strand 12 in a predetermined position.
In order to make the mesh sheet 10 into a lattice shape, the weft strands 12 may be formed at equal intervals.

  By performing this operation on both sides of the first warp strand 11, the second hole 15 b includes the first warp strand 11 and the weft strand 12 knitted at a predetermined position of the first warp strand 11. It will be provided at the intersection.

At this time, the first warp strand 12 is pulled by pulling the weft strand 12 on one side and the weft strand 12 on the other side in the direction A away from the first warp strand 11 with respect to the second hole 15b. The two inner wales 11a are pulled outward to form an elliptical first hole 15a.
That is, the shape of the first hole 15a can be adjusted by adjusting the tension between the one weft strand 12 and the other weft strand 12 at this time.
The knitting of the weft strand 12 in the one warp strand 11 described above is performed in the same manner in the other warp strand 51.

Thus, in the perforated mesh sheet 10 according to the present embodiment, since the weft strands are knitted as part of the structure of the warp strands, the warp strands and the weft strands are firmly bonded, and the strength is more excellent. .
Further, since weft strands can be formed simultaneously when weaving warp strands, the perforated mesh sheet of the present invention can be produced efficiently.

The insertion thread 12 a also forms a bridge part 13.
That is, in the process of knitting the first warp strand 11, the bridging portion 13 moves the wale 11 a from the adjacent first warp strand 11 to the second warp strand 51 at a predetermined position. After inserting the insertion yarn 12a so as to pass on the diagonal line, the first warp strand 51 is knitted to a predetermined position in the length direction of the second warp strand 51, and then the second warp strand 51 is knitted. The first warp strand 11 is knitted so as to pass through the diagonal line of the gap G, and the first warp strand 11 is knitted to a predetermined position in the length direction of the first warp strand 11. Can be obtained.
The bridge part 13 is knitted by repeating this operation a plurality of times.
The knitting of the bridging portion 13 in one warp strand 11 described above is performed in the same manner in the other warp strand 51.

Thus, in the mesh sheet with holes 10 according to the present embodiment, since the bridge portion is knitted as a part of the structure of the warp strand, the warp strand and the bridge portion are firmly bonded.
For this reason, the intensity | strength with respect to a surface direction is more excellent.
Moreover, since a bridge part can be formed simultaneously when weaving a warp strand, the mesh sheet 10 with a hole can be manufactured efficiently.

Next, the knitting method of the second warp strand 51 will be described.
FIG. 4 is an explanatory view for explaining the knitted state of the intersection of the second warp strand and the weft strand knitted at a predetermined position of the second warp strand in the mesh sheet with holes according to the present embodiment. FIG.

As shown in FIG. 4, in the mesh sheet with holes 10 according to the present embodiment, the second warp strand 51 has three wales 11a made of fibers arranged, and reinforced fibers 11c are knitted in each.
The weft strand 12 on one side and the weft strand 12 on the other side are connected to each other at a predetermined position of the wale 11a where the central reinforcing fiber 11c is knitted.

  In this case, since the weft strands 12 are connected to each other and the connected wales 11a are reinforced by the reinforcing fibers, the strength in the longitudinal direction of the weft strands is particularly excellent.

  From the viewpoint of the strength of the perforated mesh sheet 10, the weft strand 12 is preferably a bundle of 1 to 50 fibers having a fineness of 1000 to 3000 dtex, and more preferably 2 to 10 bundles. preferable.

  Thus, in the mesh sheet 10 with a hole which concerns on this embodiment, since the 2nd warp strand 51 uses the reinforced fiber, it is excellent in the intensity | strength with respect to the length direction of the 2nd warp strand 51. FIG.

The mesh sheet with holes 10 according to the present embodiment is processed with resin.
That is, the entire surface of the mesh sheet with holes 10 is covered with the resin.
In this case, the perforated mesh sheet 10 is extremely excellent in strength in the surface direction, although the stretchability is impaired.

  Examples of such resins include polyester resins, polypropylene resins, polyamide resins, polyethylene resins, polyvinyl chloride resins, and acrylic resins.

  As described above, since the mesh sheet with holes 10 according to the present embodiment can be provided with holes at arbitrary positions, such as a sheet constructed on a concrete spraying surface, an illumination net, a ground reinforcement grid, and the like. It is suitably used for various applications.

  Moreover, since the said mesh sheet 10 with a hole has the 1st hole 15a and the 2nd hole 15b by which the 1st warp strand 11 was arrange | positioned at equal intervals, when using as an illumination net, for example, it is equal intervals It is possible to attach an illumination lamp, and when used as a sheet to be applied to a concrete spraying surface, the sheet can be fixed to the surface in a well-balanced manner.

  Furthermore, since the first hole 15a is provided at the intersection of the first warp strand 11 and the weft strand 12 knitted at a predetermined position of the first warp strand 11, it has excellent strength. It becomes.

FIG. 5 is a schematic view showing a construction example when the perforated mesh sheet according to the present embodiment is used as a sheet to be constructed on a concrete spraying surface.
As shown in FIG. 5, when the holed mesh sheet 10 is used for a sheet constructed on a concrete spraying surface, the fastener 31 is passed through and fixed to the first hole 15a of the holed mesh sheet 10. Thereby, the mesh sheet 10 with a hole can be fixed reliably.
Thus, when the mesh sheet 10 with a hole is used also as a sheet | seat constructed on a concrete spraying slope surface, it has the advantage that a sheet | seat can be fixed to a slope surface with sufficient balance.
In addition, since the plurality of first holes 15a and second holes 15b are arranged at equal intervals at this time, the area of the construction surface can be easily determined using the first holes 15a and the second holes 15b as reference points. Can be done.

FIG. 6 is a schematic diagram showing a construction example when the mesh sheet with holes according to the present embodiment is used for an illumination net.
As shown in FIG. 6, when the perforated mesh sheet 10 is used as an illumination net, it can be used as an illumination net by attaching an illumination lamp 32 connected to the lead 33 to the first hole 15a.
In this case, since the first hole 15a and the second hole 15b are arranged at equal intervals, when the illumination lamp is mounted, the distance between the illumination lamps using the first hole 15a and the second hole 15b as a reference point. Setting is extremely easy.
As a result, beautiful illumination can be produced.
Also, the illumination lamp can be easily installed and installed.

When the perforated mesh sheet 10 is used as a ground reinforcement grid, even if it is bent by the ground or the like (hereinafter referred to as “protected object”) protected by the perforated mesh sheet 10, it is made to follow the non-protected object. be able to.
In addition, when laying on the ground, the mesh sheet with holes 10 has the gap G, so even if there are relatively large protrusions on the ground, it can be constructed while avoiding it.
Further, when the weft strands 12 are string-like, a certain gap is generated between the strings, so that fine protrusions can be released.
Therefore, the perforated mesh sheet 10 can exhibit a sufficient reinforcing effect even when used for a long period of time, and breakage is also suppressed.

Moreover, when the said mesh sheet 10 with a hole is embed | buried in soil, the area which the soil of the one side of the mesh sheet 10 with a hole and the soil of the other side contacts will become large.
For this reason, the interlocking effect of the mesh sheet 10 with holes (the pulling resistance in the length direction of the mesh sheet 10 with holes) is increased, and there is an advantage that the displacement of the soil due to an earthquake or the like is further suppressed.

[Second Embodiment]
FIG. 7 is a plan view showing a second embodiment of the mesh sheet with holes according to the present invention.
As shown in FIG. 7, the mesh sheet with holes 20 according to the present embodiment is provided with a rectangular first hole 15 a at the intersection of the first warp strand 11 and the weft strand 12. It differs from the mesh sheet 10 with a hole which concerns on 1st Embodiment by the point by which the rectangular 2nd hole is not provided in the part which does not cross the weft strand 12 of the 1 warp strand 11. FIG.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment.

For example, although the mesh sheet 10 with a hole which concerns on this embodiment mentioned above is provided with the bridge part 13, it does not necessarily need to be provided.
In this case, the insertion yarn forms only the weft strand 12, and the other portions are knitted to the wale 11a by the same route as the connecting yarn 11b.

  In the mesh sheet with holes 10 according to the present embodiment, the weft strand 12 and the bridge portion 13 are knitted with the same insertion thread, but separate insertion threads may be used.

  In the mesh sheet 10 with a hole according to the present embodiment, as a warp strand, a band formed of a plurality of wales 11a formed in a chain knitting in the longitudinal direction and a connecting yarn (not shown) for connecting the plurality of wales 11a. However, it is not limited to this.

  In the mesh sheet with holes 10 according to the present embodiment, the first warp strands 11 and the second warp strands 51 are alternately arranged, but only the first warp strands 11 may be arranged.

  In the mesh sheet with holes 10 according to the present embodiment, reinforcing fibers may be knitted on the first warp strands 11.

In the mesh sheet with holes 10 according to the present embodiment, a plurality of strings are used as the weft strands 12, but the present invention is not limited to this.
The same applies to the bridge portion 13.

  In the mesh sheet with holes 10 according to the present embodiment, the weft strands 12 are laid so as to be in a line in a direction perpendicular to the longitudinal direction of the warp strands 11, but may be laid alternately. .

In the mesh sheet 10 with a hole according to the present embodiment, the first hole 15a and the second hole 15b are provided, but only the first hole 15a or only the second hole 15b may be used.
That is, a hole can be provided at an arbitrary position.

In the mesh sheet 10 with a hole according to the present embodiment, four wales 11a are used for the first warp strand 11, and three wales 11a are used for the second warp strand 51. It is not limited.
In addition, it is preferable that the number of wales in a warp strand is 1-10.

Among these, it is preferable that the wales of the warp strands (first warp strands) provided with holes are even numbers, and the wales of the warp strands (second warp strands) not provided with holes are preferably odd numbers.
If the number of warp strand wales provided with holes is an even number, the weft strands are knitted on the innermost two wales of the warp strands, and these weft strands are pulled away from the warp strands to form holes of a predetermined shape. Can be formed at the center of the strand.
On the other hand, when the number of wales of warp strands without holes is odd, the wales are positioned at the center of the warp strands, so that weft strands can be connected to each other.

  In the second warp strands 51 of the mesh sheet 10 with holes according to the present embodiment, the weft strands 12 and the weft strands 12 are connected, but they are not necessarily connected.

  Although the mesh sheet with holes 10 according to the present embodiment is all processed with resin, it may not be processed with resin, and only warp strands or weft strands may be processed with resin instead of the entire mesh sheet with holes. .

In the mesh sheet with holes 10 according to the present embodiment, the first warp strand 11 and the second warp strand 51 and the weft strand 12 are knitted, but it is not always necessary to knit, and the warp strand and the weft are not necessarily knitted. The strand may be bonded with an adhesive or the like.
The same applies to the warp strand and the bridge portion.

  In the perforated mesh sheet 20 according to the second embodiment described above, two lines are formed on the diagonal line of the gap G formed by the first warp strand 11, the second warp strand 51, and the weft strand 12. Although the bridge portion 13 is provided so as to cross, only one of the bridge portions 13 may be provided.

FIG. 1 is a plan view schematically showing a first embodiment of a mesh sheet with holes according to the present invention. Drawing 2 is an explanatory view for explaining the knitting state of the 2nd hole in the 1st warp strand of the mesh sheet with a hole concerning this embodiment. Drawing 3 is an explanatory view for explaining the knitting state of the 1st hole in the 1st warp strand of the mesh sheet with a hole concerning this embodiment. FIG. 4 is an explanatory view for explaining the knitted state of the intersection of the second warp strand and the weft strand knitted at a predetermined position of the second warp strand in the mesh sheet with holes according to the present embodiment. FIG. FIG. 5 is a schematic view showing a construction example when the perforated mesh sheet according to the present embodiment is used as a sheet to be constructed on a concrete spraying surface. FIG. 6 is a schematic diagram showing a construction example when the mesh sheet with holes according to the present embodiment is used for an illumination net. FIG. 7 is a plan view showing a second embodiment of the mesh sheet with holes according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Mesh sheet with a hole 11 ... 1st warp strand 11a, 11a '... Wale 11b, 11b' ... Connection thread 11c ... Reinforcement fiber 12 ... Weft strand 12a ... Insertion thread 13 ... Bridge 15a ... first hole 15b ... second hole 31 ... fastener 32 ... illumination lamp 33 ... lead 51 ... second warp Strand A ... Direction G ... Gap

Claims (9)

A plurality of strip-shaped warp strands arranged in parallel so that the length direction is parallel;
Weft strands erected between adjacent warp strands;
With
The warp strand has a plurality of holes;
A mesh sheet with holes, wherein the holes are formed simultaneously with the knitting of the warp strands.   The mesh sheet with holes according to claim 1, wherein the warp strands have a plurality of holes arranged at equal intervals.   The mesh sheet with holes according to claim 1, wherein the weft strands are knitted as a part of the structure of the warp strands.   4. The perforated mesh sheet according to claim 3, wherein the hole is provided at an intersection of the warp strand and a weft strand knitted at a predetermined position of the warp strand.   The perforated mesh sheet according to claim 1, further comprising a bridging portion provided on a diagonal line of a gap formed by the warp strands and the weft strands.   6. The perforated mesh sheet according to claim 5, wherein the bridge portion is knitted as a part of the structure of the warp strands.   The perforated strand according to claim 1, wherein the warp strand is a knitted fabric knitted by a plurality of wales formed by chain knitting in the longitudinal direction and connecting yarns connecting the plurality of wales. Mesh sheet.   The perforated mesh sheet according to claim 1, wherein the weft strand is a plurality of strings.   The perforated mesh sheet according to claim 1, wherein the warp strands are resin-processed.

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