JP6105860B2 - Civil engineering bag material - Google Patents

Description

  The present invention relates to a warp knitted net fabric resistant to friction and impact used for civil engineering bag materials, falling rock prevention nets, animal protection nets, etc., in particular, it has a pile on the front and back, or at least one of them, The present invention relates to a durable warp knitted net fabric that can prevent damage due to cutting, rubbing, and the like, and a civil engineering bag material using the warp knitted net fabric.

Civil engineering bag materials are used for civil engineering works and river protection works in rivers, lakes, and oceans. This civil engineering pouch material is filled with a padding material such as stone, and this is laid on the riverside or seaside.
Traditionally, gabions made of bamboo or iron wire have been used as civil engineering bags.
Although these gabions have a relatively solid shape and have some advantages, they are inferior in the familiarity between gabions and the familiarity of the laying surface, and the revetment performance cannot be said to be sufficient.

As a material capable of solving these problems, warp knitting net fabrics knitted using synthetic fibers by a warp knitting machine such as a Russell machine have come to be used in many cases.
This warp knitted net fabric is relatively strong and has the advantage that the size and shape of the holes can be freely changed.

  These warp knitted net fabrics are used for rockfall prevention nets and animal protection nets, etc. Among them, civil engineering bag materials maintain their shape as a single solid even after filling with filling materials. It also has deformability and is well-known for the civil engineering bag material when it is laid and familiar with the laying surface, so that it fully exhibits the revetment function.

By the way, a certain level of strength is required for the civil engineering bag material using the warp knitted net.
Tensile strength that can withstand the weight and impact is required when filling with a filling material such as stone, when filling and filling with filling material, and after laying.
In addition, durability that can withstand cutting and rubbing from crushed stone used for filling materials, concrete fragments and the like is required.
To deal with these issues of strength requirements, the mainstream is to use a strong yarn type or a thick yarn, but there is a limit to this method.

And after filling and laying the inside packing material in the civil engineering bag material, it does not cause clogging and has a certain water permeability.
In other words, after laying, like a conventional gabion, good water permeability is required in order to make living things and the like easily enter into the environment.

Furthermore, it is required to prevent the filling material having a small particle size mixed with the cracked stone and the concrete fragments from falling off.
This is because, after laying the civil engineering bag material, it may be removed after a certain period. At this time, if a small filling material is left as a residue in the laid site, the environment is deteriorated.
Although it is possible to reduce the holes in the warp knitted net fabric to prevent this dropout, this will cause clogging and decrease in water permeability.
In this way, conflicting requirements are demanded at the same time.

Many proposals have been made for these requirements.
For example, Patent Document 1 proposes a high-strength warp knitted net fabric having a special organizational structure knitted by a raschel machine or a double raschel machine for civil engineering bags and rock fall prevention nets.

Patent Document 2 discloses a civil engineering gabion made of a synthetic fiber net material.
A non-woven fabric is laminated inside the civil engineering gabions to prevent breakage such as cutting or rubbing, and to prevent the outflow of the filling material having a small particle size.

And in patent document 3, the abrasion-resistant sheet | seat which has the pile integrally formed in at least one of the front and back of a base is shown.
The marine conservation structure is composed of a bag body and padding material using this wear-resistant sheet, and the protection function of the base by the pile group against sand drift and waves is introduced.

JP 2009-57670 A JP 2002-69969 A JP 2011-256664 A

However, the above-described conventional examples are hardly satisfactory solution means.
For example, Patent Document 1 aims to improve the tensile strength due to the tissue structure, and has a considerable effect on increasing the tensile strength by taking measures against the tissue structure.
However, it cannot be said to be a proposal for durability against cutting or rubbing due to sharp edges such as crushed stone, concrete fragments and falling rocks.

Further, in Patent Document 2, for the purpose of improving durability and preventing falling off, a nonwoven fabric is laminated inside a net material made of synthetic fiber, and damage due to an edge of the filling material or a filling material having a small particle size is obtained. It prevents falling out. However, regarding the use of non-woven fabric, the non-woven fabric is clogged by drifting material, algae, etc., although it is possible to prevent the small filling material from falling off.
This clogging hinders the passage of water into the civil engineering bag material and prevents the entry of organisms into the civil engineering bag material, and is not said to be familiar to the environment.

And in patent document 3, the abrasion-resistant sheet | seat which formed the pile in the base surface is shown for the main objective of the protection of the base by a pile group.
A marine conservation structure is constituted by the bag body and the filling material using the wear-resistant sheet, which is effective in capturing sand drift and controlling waves, and is also suitable for a biological environment.
However, this wear-resistant sheet is mainly used for relatively gentle actions such as drifting sand and waves, and it is effective against sharp edges such as stuffed stones and concrete fragments. However, it is difficult to say that the durability is improved.

  As described above, the conventional fiber net that has been used for civil engineering bag materials has a problem of durability against cutting and rubbing, and has a certain water permeability without causing clogging, and a small filling material. There were problems to be solved such as conflicting issues such as preventing omissions.

The present invention has been made against the background of the above circumstances.
That is, the object of the present invention is to have durability against breakage and rubbing received from crushed stones, concrete fragments, etc., without clogging, having water permeability, and preventing falling off of small filling materials, etc. An object is to provide a warp knitting net and a civil engineering bag material using the same.

  In order to solve the above-mentioned problems, as a result of earnest and research, a pile structure having a ground tissue part having a hole of an appropriate size for preventing clogging and obtaining water permeability, and a pile knitted in the ground tissue part By forming it with a part, a pile is interposed between the crushed stone and concrete fragments and the ground structure part to obtain high durability, and the pile overlaps to cover the hole and drop off small filling materials etc. We provide warp knitted net fabric that can prevent the above and a bag material for civil engineering using this.

That is, the present invention is (1) formed integrally with a ground tissue portion having a hole and a pile tissue portion having a pile knitted into the ground tissue portion, and the pile is formed on the front and back of the warp knitted net fabric. the warp knitted net fabric you are inclined at an orientation with the ground structure portion surface with is formed on either formed into a bag, for civil engineering bag material that enables filling medium packed material in The pile structure portion is formed of a chain stitch structure of an open stitch, the sinker loop of the chain stitch structure forms a loop pile, and the loop pile is positioned alternately at the left and right positions for each course of the chain stitch structure. It exists in the formed civil engineering bag material .

That is, the present invention resides in (2) the civil engineering bag material according to the above (1), in which the loop pile is formed inside the civil engineering bag material .

That is, the present invention resides in (3) the civil engineering bag material according to (2), wherein the loop piles overlap each other and cover the perforations .

That is, the present invention provides (4), loop pile, lies in civil engineering bag material according to (1), which has a cut pile that cut the tip.

That is, the present invention resides in (5) the civil engineering bag material according to the above (1), wherein the pile is formed of synthetic fiber monofilaments of 30 dtex to 3000 dtex.

That is, the present invention resides in (6) the civil engineering bag material according to the above (1), wherein the pile is formed of a combined yarn of 2 to 10 synthetic fiber monofilaments of 30 to 3000 dtex.

That is, the present invention is (7) formed integrally with a ground tissue portion having a hole and a pile tissue portion having a pile knitted into the ground texture portion, and the pile is both on the front and back of the warp knitted net fabric. It is a bag material for civil engineering in which a warp knitted net is formed in a bag shape and has a directionality with respect to the surface of the ground texture part, and can be filled with a filling material. The pile structure portion is formed of an open chain stitch structure, the sinker loop of the chain stitch structure forms a loop pile, and the loop pile is formed at left and right alternate positions for each course of the chain stitch structure. It exists in civil engineering bag materials.

  The warp knitted net fabric of the present invention is integrally formed of a ground tissue portion having a hole and a pile tissue portion having a pile knitted into the ground tissue portion. When used for bag materials, etc., piles are interposed between the filling material and the ground tissue part even if the filling material or drifting material is subjected to friction or impact, and the friction and impact remain only in the pile structure part, Great durability is obtained without the ground tissue part being directly damaged by cutting or rubbing.

And, in the warp knitted net fabric of the present invention, the piles formed on either the front or back of the warp knitted net fabric are formed so as to be inclined with respect to the ground texture portion surface. , When this is pressed by crushed stones or concrete fragments, piles are neatly overlapped and cover the ground structure part, and the crushed stones do not scrape the pile and reach the ground structure part. High durability of warp knitted net can be obtained with pile density.
Here, if the pile is formed on both the front and back sides of the warp knitted net, such an effect is further doubled.
In addition, when the warp knitted net is subjected to pressure, the tensile strength is greatly increased by the intertwining of the front and back piles.

  The chain knitting structure used in the warp knitting net fabric of the present invention is an open chain knitting structure, and the loop pile is formed by changing the position alternately on the right side, the left side and the left side for each course of the chain knitting structure. In this case, the tip of the loop pile is also swung alternately with right, left, and left, and when this is pressed, the pores of the textured portion are covered evenly and uniformly, so that the particle diameter is small from the holes. There is an advantage that it is possible to prevent omission of filling materials.

  And in the warp knitted net fabric of the present invention, the ground structure part has a hole, and the pile of the pile structure part is pressed to cover the hole appropriately, so this is used for civil engineering bag materials, etc. When used, it is possible to achieve both prevention of clogging and prevention of falling off of filling materials and the like.

  And when the pile of the warp knitted net fabric of the present invention is a cut pile obtained by cutting a loop pile, its tip is open compared to the loop pile, so that it is less likely to be subjected to drifting material etc. More effective in preventing clogging.

And when the pile of the warp knitted net fabric having the durability of the present invention is formed of synthetic fiber monofilament of 30 dtex to 3000 dtex, moderate rigidity and elasticity can be obtained, and friction and impact from external factors The strength to withstand and the strong restoring force to the original shape are exerted, and the buffering action works more.
Further, when the pile is a synthetic yarn obtained by combining several synthetic fiber monofilaments of 30 dtex to 3000 dtex, the above-described strength and restoring force are maintained, and the pile density is appropriately increased, and the small amount contained in the filling material It is more effective in preventing omission of cracked stones with grain size.

And, when the civil engineering bag material is formed using the warp knitted net fabric of the present invention, it has moderate flexibility and strength, so it is easy to fill the filling material, and it fits well in the civil engineering bag material and the laying place. Demonstrate the function.
The pile serves as a cushioning material and exhibits high durability against breakage and rubbing due to the filling material. In addition, since the holes have appropriate dimensions, there is no clogging, good water permeability is maintained, living organisms can enter and leave the inside, and there is a good advantage in the biological environment.
Furthermore, piles can be overlapped to prevent a small filling material from falling off, and there is an advantage that the environment is not deteriorated when the civil engineering bag material is laid or removed.

FIG. 1 is a schematic explanatory diagram (partially omitted) of a raschel machine M with a pin bar. FIG. 2 is an organization chart of the warp knitting net base K. FIG. 3 is an organization chart of the ground organization part 1 of the warp knitting net base K. FIG. 4 is an explanatory diagram of a substance that pulls out the sinker loop S of the chain stitch structure C to form a loop pile LP. FIG. 5 is a schematic diagram (partially omitted) of the pile organization part 2. FIG. 6 is a schematic diagram of a loop pile LP formed in the ground tissue portion 1 having a rhombic hole H. FIG. 7 is a schematic side view in which loop piles LP are formed on the front and back of the warp knitted net base K. FIG. FIG. 8 is a schematic diagram (partially omitted, partly sectional view) in which a civil engineering bag material G is laid.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary.

(First embodiment)
The warp knitting net fabric K in the present embodiment is knitted by a Raschel machine M (9 gauge) with a pin bar shown in the schematic explanatory view (partially omitted) of FIG.
Pins P for forming piles are arranged on the pin bar PB, and the knitting yarn Y1 is hung on the pins P to form a loop pile LP.
Here, 9 gauge means the number of knitting needles N existing between 1 inch.

The warp knitting net fabric K shown in the organization chart of FIG. 2 has a hole 11 formed by four ribs L2, L3, L4, and L5, and is accompanied by an insertion tissue portion 13. It is composed of an organization part 1 and a pile organization part 2.
In order to facilitate understanding, FIG. 3 shows an organization chart of only the ground organization unit 1.
A pile structure portion 2 having a chain stitch structure is knitted in the ground structure portion 1 to form a warp knitted net fabric K.

  In the organization chart of FIG. 2, the ground organization unit 1 is Osa L4 (2-2 / 0-0 / 2-2 / 1-1 / 2-2 / 1-1 / 2-2 / 1- 1-3- 3 / 1-1 / 2-2 / 1-1 / 2-2 / 1-1 / 2-2) and OSA L5 (1-1 / 3-3 / 1-1 / 2-2 / 1-1 / 2-2 / 1-1 / 2-2 / 0-0 / 2-2 / 1-1 / 2-2 / 1-1 / 2-2) inserted tissue part 13 and OSA L2 (1-2 / 1-0 / 1-2 / 2-1 / 1-2 / 2-1 / 1-2 / 2-1 / 2-3 / 2-1 / 1-2 / 2-1 / 1-2 / 2- 1) and OSA L3 (2-1 / 2-3 / 2-1 / 1-2 / 2-1 / 1-2 / 2-1 / 1-2 / 1-0 / 1-2 / 2-1 / 1-2 / 2-1 / 1-2) and the knitting part 12 and has a hole 11. When the knitted fabric is expanded, the hole 11 becomes a diamond-shaped hole H as shown in the schematic diagram of FIG.

In the organization chart of FIG. 2, the pile organization portion 2 is knitted into the ground organization portion 1.
The pile structure portion 2 is a chain stitch structure C of an opening formed of the oscillating L1 (0-1 / 1-0).
As shown in the schematic explanatory diagram of FIG. 1, the knitting yarn Y1 is hung on the pin P of the pin bar PB by the loop L1 during knitting.
The portion hung on the pin P is the sinker loop S of the chain stitch structure C as shown in the entity explanatory diagram of FIG. 4, and the loop pile LP is formed by pulling out the sinker loop S.

As a result, as shown in the schematic diagram of FIG. 5, the loop pile LP is formed with the right R, left L, right R, left L and left and right positions alternately for each course of the chain stitch structure C.
Then, as shown in the entity explanatory diagram of FIG. 4 and the schematic side view of FIG. 7, the loop pile LP is formed on the basis of the knitting principle in which the sinker loop S is drawn, and the drawn loop pile LP is knitted yarn Y1. Due to the elasticity of the material, a restoring force is exerted to return to a straight line, and as a result, it is inclined downward with directionality.

When the warp knitted net fabric K thus obtained is used as a civil engineering bag material G with the loop pile LP inside, the filling material G1 presses the loop pile LP, but the loop pile LP As described above, since it is inclined with directionality, it falls down in an orderly manner and the cover of the surface of the warp knitted net fabric K is surely protected.
As shown in the schematic diagram of FIG. 6 (partially omitted), the loop piles LP overlap each other and cover the hole H, so that the medium packing material G1 having a small particle size contained in the packing material G1 falls to the outside. Can prevent spilling.

As a comparative example, in the case of a pile woven fabric that is formed with the pile standing substantially perpendicular to the surface of the base material, damage factors such as cracked stones and concrete fragments scrape the pile to the surface of the base material. The probability of reaching this will be high, causing damage to the sheet material. In order to prevent these phenomena, a high pile density is required, and the shape becomes thick and heavy.
On the other hand, in the warp knitted net fabric K of the present invention, the density of the loop pile LP is not high, but the loop pile LP is inclined from the beginning. The risk of reaching the K plane is very low.

As for the material used, polyester monofilament yarn (560 dtex) is used for the knitting yarn Y1 forming the loop pile LP.
By using a monofilament yarn, high elasticity and strength can be obtained.
As the knitting yarn Y1, it is also possible to adopt a combined yarn obtained by combining a plurality of polyester monofilament yarns (560 dtex).

By using the combined yarn, the density of the loop piles is increased, and the loop piles LP are more entangled and overlapped. When this is used for the civil engineering bag material G, it is more effective in preventing the small filling material G1 from falling off. is there.
Even when used for a rockfall prevention net, the effect of catching small rockfalls can be obtained.
In addition, when this is used as a net for animal protection, the loop pile LP is entangled in addition to exerting sufficient strength when the target animal is biting or stepping on, and there is an aversion to the animal net for animal protection. There is an advantage that a further animal protection effect can be obtained.

  Then, a polyester multifilament yarn (1670 dtex) is used for the knitting yarns Y2 and Y3 that pass through the knitting L2 and L3 to form the ground knitting portion 12, and the insertion tissue portion 13 is threaded through the knitting L4 and L5. Polyester multifilament yarn (1670 dtex) is used for the knitting yarns Y4 and Y5 to be formed.

(Second Embodiment)
In the present embodiment (not shown), the warp knitted net fabric K is formed in the same manner as that shown in the first embodiment, and the tip of the loop pile LP is cut to obtain a cut pile.
As for cutting, when knitting with the same raschel machine M with pin bar as described above, a cutting blade is provided at the base of the pin P, and the tip of the sinker loop S hung on the pin P is cut during the knitting process.

If the loop pile LP is cut and used as the civil engineering bag material G, the drifting material or the like is less likely to be caught than the loop pile LP, and the water permeability is improved.
The loop pile LP is easier and more effective for dropping off the filling material G1 having a small particle size. The selection between the two can be used according to the purpose of use and the environment.

(Third embodiment)
In the warp knitted net fabric K in the present embodiment, loop piles LP1 and LP are formed on both the front and back sides of the warp knitted net fabric K as shown in the schematic side view of FIG.
As for the front F and back B of the knitted fabric mentioned here, the front F refers to the technical face side, and the back B refers to the technical back side.
Therefore, in the first embodiment, the loop pile LP is formed on the back B side of the warp knitted net base K.

The formation of the loop pile LP on the back B side is as described above, but the formation of the loop pile LP1 on the front F side is the same as the first embodiment shown in FIG. Use knitting.
Therefore, the loop pile LP1 that goes out to the front F side is also formed by being hooked on the pin P, and the loop pile LP1 that should go out to the front F side is one end, warp knitting at the time of knitting, like the loop pile LP on the back B side. It is formed on the back B side of the net base K.
The main knitting is not shown because it is a known technique.

Unlike the formation of the loop pile LP on the back B side, the loop pile LP1 on the front F side is hung on the pin P so as to straddle the yarns arranged on the front F side on the knitting machine during knitting. The loop pile LP formed in (1) is pulled out to the front F side by pulling the drawn yarn to the front F side after knitting and becomes the loop pile LP1.
In the present embodiment, the warp knitted net fabric K having the loop piles LP1 and LP on both sides of the front F and the back B is obtained as described above.

The warp knitted net fabric K having the loop piles LP1 and LP on both sides thus obtained is given more functionality than the warp knitted net fabric K shown in the first embodiment.
In particular, when this is used as the civil engineering bag material G, it has a strong characteristic not only against the inner filling material G1 but also from the drifting material and the civil engineering bag material from the outside.
Regarding the formation of piles on the front and back sides of the warp knitted net base K, only the back side, only the front side, and both front and back sides can be freely selected, and selection according to the purpose of use and usage environment is possible.

(Fourth embodiment)
In the present embodiment, as shown in FIG. 8 (partially omitted, partly sectional view, partly enlarged view) about the civil engineering bag material G formed using the warp knitted net base K, etc. Will be explained.
The warp knitting net fabric K used in the present embodiment is the same as that shown in the first embodiment, and the warp knitting net fabric has a loop pile LP formed on the back B side of the knitted fabric. Civil engineering bag material G is formed with K inside.
The civil engineering bag material G is filled with the filling G material 1 and then laid in the laying position.

The civil engineering bag material G has moderate flexibility and strength, so that it is easy to lay, and after laying, the civil engineering bag material is well adapted to the civil engineering bag materials and the laying location, and sufficiently exerts the revetment function. At the time of laying, the loop pile LP becomes a buffer material after laying, and exhibits high durability against cutting and rubbing by the filling material G1.
Moreover, after laying, the presence of the hole H provides a biological environment in which good water permeability is maintained without clogging.
Further, the loop piles LP can be overlapped to prevent the small filling material G1 from falling off, and the small filling material is not scattered when laying or removing the civil engineering bag material, thereby causing deterioration of the environment.

Although the present invention has been described above by taking the embodiment thereof as an example, the present invention can be variously modified as necessary. For example, the structure of the ground tissue portion 1 is not limited to the structure of the present embodiment, such as additionally adopting another reinforcing structure, and the hole H is not limited to the diamond-shaped hole H, but a hexagon, etc. Any hole shape can be used.
Of course, the structure of the pile structure portion 2 is not limited to the pile formation by the chain stitch structure C, and other structures may be adopted.

Also, the formation of the loop piles LP1 and LP is not limited to one per course, and the number and interval thereof are not limited, for example, one per two courses.
Furthermore, when there are piles on both sides of the warp knitted net base K, it is naturally possible to selectively cut both or one of them.
It is also possible to use two warp knitting nets K as a combination according to the purpose of use.
Furthermore, it is natural that the combined yarns may be different materials or different thicknesses.

The warp knitted net fabric K of the present invention is highly useful in a field where the characteristics can be exhibited because it is not clogged and has durability and the like.
For example, it is used for civil engineering bags, rock fall prevention nets, animal prevention warp knitting nets, etc., civil engineering materials such as soil improvement and slope reinforcement, agricultural materials such as windbreak nets, and seafood It can be used in a wide variety of fields, including aquaculture nets such as seaweed and seaweed, and water treatment materials such as purification filters.

DESCRIPTION OF SYMBOLS 1 ... Ground tissue part 11 ... Hole 12 ... Ground knitting part 13 ... Insert tissue part 2 ... Pile tissue part A ... Intersection arrow B showing pull direction ... Back C ... Chain stitch structure F ... Knitting fabric surface G ... Civil engineering bag material G1 ... Filling material H ... Diamond-shaped hole J ... Pulled yarn K ... Warp Knitting nets L1 to L5 ... Osa LP ... Loop pile LP1 coming out on the back side ... Loop pile M coming out on the front side ... Raschel machine N with pin bar ... Knitting needle P ... Pin PB ... Pin bar R ... right L ... left Y, Y1-Y5 ... knitting yarn S ... sinker loop

Claims (7)

The ground structure part having a hole and the pile structure part having a pile that is knitted into the ground structure part are integrally formed, and the pile is formed on either one of the front and back of the warp knitted net cloth and the ground structure It is a civil engineering bag material in which warp knitted net fabric inclined with directionality with respect to the surface is formed in a bag shape, and inside filling material can be filled,
The pile structure part is formed of an open chain structure,
The sinker loop of the chain stitch structure forms a loop pile,
The civil engineering pouch material, wherein the loop pile is formed at alternate left and right positions for each course of the chain stitch structure.   The civil engineering bag material according to claim 1, wherein the loop pile is formed inside the civil engineering bag material.   The civil engineering bag material according to claim 1, wherein the loop piles overlap each other and cover the hole.   2. The civil engineering pouch material according to claim 1, wherein the loop pile is a cut pile having its tip cut off.   The civil engineering bag material according to claim 1, wherein the pile is formed of synthetic fiber monofilament of 30 dtex to 3000 dtex.   The civil engineering bag material according to claim 1, wherein the pile is formed of a combined yarn of 2 to 10 synthetic fiber monofilaments of 30 to 3000 dtex. The ground structure part having a hole and the pile structure part having a pile knitted into the ground structure part are integrally formed, and the pile is formed on both the front and back of the warp knitted net cloth and the ground texture part surface It is a civil engineering bag material in which a warp knitted net fabric inclined with a directivity is formed in a bag shape and can be filled with a filling material inside,
The pile structure part is formed of an open chain structure,
The sinker loop of the chain stitch structure forms a loop pile,
It said loop pile the chain stitch structure civil bag material you characterized in that it is formed in the left and right alternately position for each course.

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