JPH076111B2 - Thick bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a thickened bag for industrial material. More specifically, the present invention relates to a thick-layered bag body for filling a granular material, a liquid, a gas or a mixture thereof to obtain a thick-layered product.

[Conventional technology]

Conventionally, as a bag body for filling powders, liquids, gas or a mixture thereof, a bag body made of various woven and knitted fabrics vertically and horizontally connected at predetermined intervals has been proposed,
In the existing weaving and knitting machines, these bags have only a maximum interlayer thickness of several tens of mm, and it has been impossible to manufacture high-thickness bags. Therefore, in order to increase the thickness of the product (after filling the filling material), the spacing between the connecting portions that connect the upper and lower layers is set vertically,
We have adopted a method in which the horizontal direction of the bag body is reduced (that is, area shrinkage occurs) after filling with the filling material, and the thickness is increased in the vertical direction. There are problems such as shrinkage, unevenness of the surface, and non-uniformity of thickness, and it cannot be said to be sufficient in terms of handleability and product quality.

In order to solve these problems, Japanese Patent Publication No. 49-48206 is known. This is a woven fabric in which the alternate wefts that connect the upper and lower layers are woven in each layer so that the interwoven space between the joints becomes longer than the ground warp and stays in a loop shape. , By separating the upper and lower layers, the excess length between the ground textures moves in the thickness direction to increase the thickness, but this is uniform because the alternate warps connecting the layers slide through the ground textures. However, it is difficult to obtain the desired one because there is a limit to the excess length weaving within the bonding interval even if the thickness is increased. Therefore, in increasing the thickness,
It may be possible to increase the over-weaving amount of alternate warp yarns by increasing the spacing between the vertical and horizontal joints as in the conventional method, but it is also possible to shrink the bag, make the surface uneven, and make the thickness uneven. Therefore, it cannot be said that the handling and product quality are sufficient.

[Problems to be solved by the invention]

The present invention has been completed through intensive studies in view of the above problems. That is, an object of the present invention is to easily and evenly separate the upper and lower layers into a desired distance by an external force between the upper and lower layers in a bag body which is filled with a powder, a liquid, a gas or a mixture thereof to obtain a thick layer. A thick-layered bag body capable of obtaining a thick-layered product.

[Means for solving problems]

An object of the present invention is to form a multi-layer cloth having a joining warp for joining layers, and to form a material by closing the periphery of the multi-layer cloth and providing an injection port for material filling at an arbitrary position on the surface of the multi-layer cloth. In the thickened bag body, the cover factor in at least one direction of at least one direction of a part or all of the textured parts where the joining warp of the multilayer cloth is present is 13 or more, and the joining warp and the weft. The weft of the predetermined joint among the plurality of joints between the two is released from the joint with the warp for joining without substantially damaging the warp for joining by physical external force, thermal or chemical treatment. This is achieved by a thickened bag body characterized by using a yarn capable of being formed.

The bag body of the present invention is a bag body for enclosing and filling materials such as powders, gases, and liquids between the fabrics of the multilayer structure in which the fabrics of a plurality of layers are partially joined in the vertical direction, Although not particularly limited, typically, at least a plurality of layers of fabric is closed at the peripheral edge, and the layers are partially bonded, and an injection port for material filling is provided. is there.

Therefore, the bag structure may have a two-layer structure, a three-layer structure, a four-layer structure or the like in whole or in part, or
The joining method may also be one in which the surfaces of the molded products are substantially flat or have an uneven shape by using a joining part in which the layers are held together or a part in which the layers are in close contact with each other.

Also, the cloth used is a two-layer woven using a multi-step shed loom or a multi-step loom. It is a multi-layer structure cloth with three layers.

It should be noted that other woven fabrics, knitted fabrics or non-woven fabrics may be used in combination with the multi-layered fabric.

The feature of the present invention is that by enclosing the joint between the upper and lower layers forming the bag body with a special structure, the encapsulated molded article can have a high thickness and at the same time have a desired shape and shape. Can be easily manufactured.

The structure of the thickened bag body of the present invention will be described below by taking as an example a bag body made of a multi-layered fabric having a warp for joining which partially joins the layers at predetermined intervals in the vertical and horizontal directions.

The joining warp yarns are alternately woven into the upper and lower layer fabrics based on a predetermined plan, and intersect with the weft yarns in each layer to form a plurality of joining portions. The intersection between the joining warp and the weft in the joining portion is structured by one or more wefts, but there are various structures and the like, and there is no particular limitation.

In the woven fabric of the present invention, the joining portion refers to a portion where the joining warp and the weft intersect, that is, a structure, and the releasing means to loosen the intersection, that is, the texture between the joining warp and the weft forming the joining portion. Yes, that is, the joining warp and the weft are not crossed (structured) and are released.

In addition, releasing the joint by physical external force means breaking the weft due to the filling pressure or the filling load when filling powder, liquid, gas, or a mixture thereof, or breaking or pulling out the weft using a jig. The term "releasing the joint portion by chemical treatment" means that the weft yarn is decomposed or dissolved by liquid or vapor and destroyed.

In the woven fabric of the present invention, the above-mentioned crossing (texture) is released by the above-mentioned physical external force, thermal or chemical treatment to the weft, and when these releasing means are viewed from the weft side, the weft is broken. , Melting, melting, or drawing.

That is, as a breaking method, a weak yarn having a low strength is used as a weft yarn to break the weft yarn by an external force. For example, a low-denier fiber or a low-strength yarn made of spun fiber such as cellulose or acrylic is used to break the layers due to a layer-expanding force that separates the layers by a jig insertion or a material filling pressure.

As a melting method, a weft yarn is a melting and decomposing yarn having a low melting point so that the weft yarn is melted and destroyed by heat. For example, a low melting point fiber such as polyolefin, polyvinyl chloride, or polyvinylidene chloride is used to melt and destroy by heating.

In addition, as a melting method, a high-melting melting thread is used for the weft thread so as to be dissolved and destroyed by a liquid or vapor. For example, fibers made of polyvinyl alcohol, polyacryl, cellulosics, etc. are used for water dissolution and destruction.

As the pulling-out method, the weft is made to have a woven structure such as a floating structure or a ring structure so that the weft yarn can be completely drawn out by an external force. For example, monofilaments, twisted yarns, and other bundled fiber yarns with good sliding properties are used to create a woven structure with a floating structure between the joints in the width direction, so that they can be pulled by hand or by a mechanical hook method. To eliminate all.

In the woven fabric of the present invention, the joining warp yarns released from the joining portions by releasing the joining portions slide to the adjacent joining warp yarns by sliding the joining portion of the opposite layer or the layer released from itself. It is possible to separate the upper and lower layers at a desired distance by using the above or a combination of the above. The separated upper and lower layer thickness is initial (when weaving)
The thickness of the upper and lower layers is at least twice as large as the thickness of the upper and lower layers, and this is greatly influenced by the joining method, joining section, and release form. It is possible to obtain a desired thickness that is several times to several tens of times or several hundred times of the desired growth time).

The thick-layered bag body of the present invention can maximize the thickness of the upper and lower layers separated by releasing even when the thickness of the upper and lower layers during weaving is small. As the thickness between the upper and lower layers becomes larger, the releasing action becomes easier, and the layer becomes easier to make thicker, so that a product having good quality can be obtained.

Therefore, the initial thickness between the upper and lower layers is at least 3 mm, preferably 10 mm or more. If it is 3 mm or less, weft yarns for thickening the woven fabric are often released, which is difficult to release,
The woven fabric after being released becomes poor, or the warp for joining cannot be densely packed, so that it is impossible to obtain a sufficient product and quality.

Further, in the present invention, when releasing the joined portion for thickening, or when using it as a product after releasing, the joining warp is in the length direction of the cloth form, that is, (the length direction of the fabric).
Since it slides in the ground structure of each layer over the whole and unevenness in thickness occurs between the layers, the coefficient of friction between the bonding yarn and the fabric is improved, and the sliding of the bonding yarn is prevented. This prevention of slippage is achieved by setting the cover factor (K) in at least one direction of some or all of the tissue parts where the bonding thread is present to K ≧ 13.

However, the cover factor (K) is F is the number of threads per inch (thread / in), N
Indicates a constant count (cotton count). When a fiber other than cotton fiber is used, it is calculated by the following equation with a conversion factor (q) taking specific gravity into consideration. That is, Where ρ _c is the specific gravity of the cotton fiber, and ρ _f is the specific gravity of the fiber used other than cotton.

In the woven fabric of the present invention, as slip prevention, the ground warp on both sides of the joining warp is densified, or the ground weft in the joint of the non-released portion is densified or both are used together. A cover factor of 13 or higher is achieved.

When K <13, the slippage of the splicing yarn cannot be suppressed sufficiently, the thickness of each splicing point changes, and the overall thickness and shape become poor, and the desired thickened bag body is made. I can't.

The joining yarn and the high-density ground yarn are irregular yarns such as irregular yarns, different denier yarns, and twisted yarns, yarns whose surface is covered with fluff, or yarns that have been subjected to resin processing, rubber processing, etc. It is also preferable to further prevent slippage by using, and the thread or the like to be used is not particularly limited.

The thick-layered bag body of the present invention having the above-mentioned structure has a crossing at the joint portion at the stage of cloth, the stage of an intermediate product finished to a certain size, or the stage of manufacturing a product at the time of filling with filler. The structure can be released to separate the layers at a desired distance. The stage at which it is released may be appropriately selected according to the purpose of use, the content of use, the purpose of use of the thickened bag body, and is not particularly limited.

The fibers used in the thickened bag of the present invention are cotton,
Natural fibers such as hemp and wool, inorganic fibers such as metal, glass and carbon, regenerated fibers such as cellulose and protein, cellulose, polyamide, polyester, polyolefin, polyurethane, polystyrene, polyvinyl chloride, polyvinylidene chloride, poly There are synthetic fibers such as acrylic and polyvinyl alcohol, and the fiber form is long fiber yarn, spun yarn, and the fiber shape is ordinary circular cross-section yarn, irregular cross-section yarn, foamed yarn, conjugate yarn, etc. In addition, there are various fiber diameters, which are not particularly limited in use, and those fibers can be used alone or in combination, and physical processing,
It may be used as a processed yarn that has been subjected to chemical processing or the like. These conditions are appropriately selected according to the purpose of use, the content of use, the purpose of use of the thickened bag body.

Further, the woven structure, woven form, etc. of the multilayer woven fabric used for the thickened bag of the present invention are not particularly limited, and for example, the weave may be plain weave, twill weave, satin weave or a modified weave thereof, Further, the number of layers may be two-layer, three-layer, four-layer ... Structure on the front surface or partially, and the joining method is
The structure of the present invention may be used alone or in combination with another bonding method (such as one in which the layers are partially adhered to each other or a space is maintained or a combination of both),
As for those conditions, the content of the composition is appropriately selected according to the purpose of use, content of use, purpose of use, etc.

Further, the predetermined joints to be released (hereinafter referred to as releasing joints) in the joints constituting the multi-layered fabric used for the thickened bag of the present invention are dense in both the vertical and horizontal directions or only in one direction. Alternatively, they may be arranged so as to be sparse in both directions,
Further, when releasing the release joint, the release joint may be configured to be partially or vertically releasable, or wholly or partially releasably in only one direction. It may be configured to be released uniformly,
Therefore, the form after the release can be a flat form having a substantially uniform thickness over the entire surface or a non-uniform uneven shape over the entire surface, but the form is not particularly limited. Those conditions are appropriately selected and configured according to the purpose of use, content of use, purpose of use, etc.

Further, the fabric for thickened bag body of the present invention is handled by subjecting other woven fabrics, knitted non-woven fabrics, nets, etc. to polymerization integration, or by attaching other members, or by performing physical processing, chemical processing, etc. Can be improved and the product function can be improved, and the invention is not particularly limited. Those conditions may be appropriately selected and adopted according to the purpose of use, content of use, purpose of use, etc.

Further, the thickened bag body of the present invention may be provided with a single point filter point as a drainage hole or as an anchor driving hole, and a hose guide for material filling may be installed. Alternatively, a single wall may be provided in order to reduce the pressure resistance of the bag, and the content thereof is not particularly limited.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing examples of the thickened bag body of the present invention. Each drawing is an example of a woven fabric used for the thickened bag body of the present invention, and shows a woven structure constituting the bag body.

For example, as shown in FIG. 1, the fabric according to the present invention has an upper layer cloth 1 and a lower layer cloth 1'having an initial (when weaving) thickness t,
It has warp yarns 6 and 7 for joining layers between the vertical and horizontal intervals, and is partially woven through the upper layer fabric 1 and the lower layer fabric 1 ', and intersects with the wefts in the upper and lower layer fabrics 1 and 1'. , A plurality of joints 1a, 1b ..., 2a, 2b. Joint 1
The crossing between the warp threads 6,7 and the weft threads in a, 1b ..., 2a, 2b ... is made up of one or more weft threads. Each crossing (texture) shape in the upper and lower layer cloths 1,1 ', The number of crosses (that is, the length of the joint portion) and the like are various and are not particularly limited, and may be appropriately selected each time, but with the warp yarns 6 and 7 for joining which form the unreleased joint portion. The crossing with the ground wefts 3, 3'is performed by using one or more ground wefts 3, 3 '. This number of intersections is determined by the method of setting the thickness after release and the method of setting the number of joints.

On the other hand, the joining warp threads 6 and 7 and the release weft thread that form the release joint portion
The crossing with 4,4 'is preferably carried out with 1 to 20 release wefts 4,4'. If the number of yarns is less than 1, the number of weft yarns 4 and 4'cannot be increased, and if the number of yarns is 20 or more, it is difficult to release the weft yarns, and the upper and lower layer joints after the release may be skewed.

In the present invention, at least one layer 1 or 1 '
, A plurality of joints 1a, 1b …… or 2a, 2b ……
Among them, the releasing wefts 4 and 4 ′ which can be easily released are used for the yarns which intersect only the predetermined joining parts with the joining warp yarns 6 and 7, and the ground wefts 3 and 3 ′ are used for the other parts.

In the present invention, the releasing wefts 4, 4'are provided at the releasing joints where the joining warps 6, 7 and the releasing wefts 4, 4'intersect (structure).
By removing all of them and releasing the crossing (structure), the joining warp yarns 6 and 7 are released from the layer of the joining portion. On the other hand, at the joint where the joining warp yarns 6 and 7 and the ground weft yarns 3 and 3 ′ intersect (texture), the crossover (texture) is not released and can be maintained in the initial state. Therefore, the joining warp yarns 6 and 7 liberated by the removal of the former release weft yarns 4 and 4'are, as shown in FIGS. 1 to 6, from themselves or in the opposite layer to the released layer as shown in FIGS. Sliding the joint part of the adjacent warp yarn 6,
It is possible to separate the upper and lower layer cloths 1 and 1'to a desired interval (thickness) T by using the former or the latter in combination with each other. In addition, the surface morphology of the product after the thickening treatment is a shape without shrinkage because the bonded warp has a shape as planned, and has no shrinkage with the layer interval T set at the woven fabric design stage. It has a surface shape, and even when it is used as a product, it has a predetermined filler injection shape, and its handling is easy. Further, due to its surface form, post-processing of the bag (resin processing, rubber processing, attachment of other members, etc.) is extremely easy. This T is the release weft
It is not particularly limited, because it varies depending on the arrangement of 4, 4 ', the joining method, the initial thickness (when weaving), the thickness t, and the intended use. According to the above, T≈ (N + 1) · t or T≈ (2N + 1) · t (where N is the number of joints using the release wefts 4, 4 ′, and the joining occurs in the upper and lower layers in the portion where the upper and lower layers are to be separated from each other. It is represented by the total number of divisions). For example, if t = 20mm and N = 6, the former T is 14
The thickness T is 0 mm and the latter T is 260 mm, which is thicker than the initial (when weaving) thickness t. Further, by increasing t or N, T becomes an extremely thick layer, and it becomes possible to have a thickness (T) of tens of cm, tens of cm, or hundreds of cm which could not be achieved in the past.

The method of removing the release wefts 4 and 4'and releasing the crossing (texture) of the release joint is as a step of the intermediate product finished to a certain size at the woven stage after weaving or by sewing. Or at the stage of product (molded) manufacturing,
The two-layered cloth is separated by physical external force, thermal or chemical treatment, that is, breaking, melting, melting, drawing or the like.

Specifically, breaking is performed by inserting a holding tool between the upper and lower layers using weak wefts as release wefts 4 and 4'or by breaking the release wefts 4 and 4'by external force such as material filling pressure. The upper and lower layers are expanded.

For dissolution, a high-solubility dissolving yarn is used for the releasing weft yarns 4 and 4 ', and the releasing weft yarns 4 and 4'are solubilized and destroyed by liquid or vapor to expand the upper and lower layers.

To melt, use a low melting point melted yarn for the release wefts 4, 4 ',
The released weft yarns 4, 4 ′ are melted and destroyed by heating to spread between the upper and lower layers.

For pulling out, use easy-to-pull yarns for the release wefts 4, 4'and remove the wefts 4, 4'by external force to remove the release wefts 4, 4'as a floating structure and a kanna structure. The upper and lower layers are expanded.

The type of the release wefts 4, 4'and the release process are appropriately set depending on the purpose of use of the bag, the purpose of use, and the like.
Use a bag structure that matches 4 '. That is, release weft 4,4 ′
When using a weak yarn weft, the strength is lower than that of the joining warp yarns 6,7, preferably 1/10 of the tenacity of the joining warp yarns 6,7.
It is preferable to use one having a strength of up to 1/1000.
When the weak yarn weft is higher than the strength of the joining warp yarns 6 and 7, the joining warp yarns 6 and 7 are cut when the crossing of the joining portion is released, and the upper and lower layers are not joined. In addition, the strength of the weak yarn weft is 6,
If it is 1/1000 times or less than 7, the warp yarns 6 and 7 for joining cannot be lifted at the time of weaving, and the initial thickness t cannot be maintained,
There is a possibility that thickness unevenness may occur, or a weak weft may be cut and the desired woven fabric may not be obtained.

The weak yarn weft used in the present invention is not particularly limited in use as long as it satisfies the above constitutional requirements, and various fibers can be used, depending on the woven constitution, purpose of use, contents of use, use, etc. Although it may be selected as appropriate, preferably low strength fiber yarns such as rayon, acetate, acrylic, etc., spun fiber yarns such as cellulose type, acrylic type, etc. or low denier yarns of general high strength fiber such as polyester, polyamide type etc. Configure using.

Further, in forming the bag body according to the present invention, the ground weft 3,
In the joint portion where 3'and the joining warp threads 6 and 7 are crossed, the weft in the portion where the joining warp threads 6 and 7 are converted to the opposite layer is higher than the weak yarn weft strength, preferably the weak weft strength. It is made up of reinforcing wefts 8,8 'that are more than twice as strong.
If the reinforcing weft is weaker than the weak weft, when the weak weft is broken and the crossing (structure) of the release joint is released, the reinforcing weft is broken first, and the ground weft 3,3 ' In addition, it is not preferable since it may not be possible to obtain a desired upper and lower layer interval due to fracture. The reinforcing wefts 8 and 8'are not particularly limited in use as long as they are higher than the weak yarn weft strength.
It can be reinforced by the yarn type, denier, or texture.

Further, when using a melted weft as the release wefts 4 and 4 ', the melted weft is made of a fiber material that is easily dissolved and decomposed by liquid such as water, acid, alkali, solvent, etc. As the fiber materials such as the upper and lower layer cloths 1 and 1'and the warp yarns 6 and 7 for joining, those which do not melt, zey, shrink or deform.

When the dissolved weft is dissolved and decomposed by the liquid or steam, the upper and lower layer fabrics 1, 1 ′ and the joining warp yarns 6, 7 etc. may be dissolved, zipped, contracted or deformed, and the bag body may be broken or the shape may be retained. Failure, insufficient strength, uneven size, etc.

The melted weft used in the present invention is not particularly limited in use as long as it satisfies the above constitutional requirements, various fibers can be used, and the weaving constitution, the purpose of use, the contents of use, the use, etc. are appropriately selected. You can select it. For example, if the soluble weft is a water-soluble yarn (for example, polyvinyl alcohol), the upper and lower layer fabrics 1,1 'and the joining warp yarns 6,7, etc. also dissolve a water-insoluble fiber (for example, nylon). If weft threads that are soluble in acid (such as nylon) are used, the upper and lower cloth layers
1,1 'and warp yarns 6,7, etc. for joining are fibers which are insoluble in acid and have no influence (for example, ester), and upper and lower layer cloths when a yarn in which the dissolved weft yarn is dissolved in alkali (for example, ester) is used. 1,1 'and the warp yarns 6 and 7 for bonding use fibers, which are insoluble in alkali and have no influence (for example, nylon), but preferably, the melted weft yarn is made of water, hot water, steam, or the like in view of the manufacturing method and handling. Use water-soluble thread. For example, water-soluble polyvinyl alcohol-based, polyacrylic-based, or cellulose-based fibers are used.

When the molten wefts are used as the release wefts 4 and 4 ', the molten wefts are the upper and lower layer fabrics 1 and 1'and the joining warp yarns 6 and 7 which form the bag body.
And the like, which is lower than the melting point of the fiber material, and preferably has a low melting point of 150 ° C. or lower. The melting point difference between the two is 10 ° C. or more, and the upper and lower layer fabrics 1, 1 ′ and the joining warp yarns 6, 7 are fibers that are less likely to undergo thermal shrinkage and thermal deformation when the molten weft yarn is melt-fractured by heat treatment. It is preferable to use a material. The upper and lower layer fabrics 1,1 'and the joining warp yarns 6,6' are lower than the melting point of the molten weft, or the melting point difference between the two is less than 10 ° C, or a fiber material with large heat shrinkage and thermal deformation. If there is, when the melted weft is melted and broken by heat treatment, the bag body is broken, the shape cannot be maintained, and the dimension becomes nonuniform.

The molten weft used in the present invention is not particularly limited in use as long as it satisfies the above-mentioned constitutional requirements, and various fibers can be used as appropriate depending on the woven constitution, purpose of use, content of use, use, etc. It may be selected, but it is preferable to use low melting point threads such as polyolefin thread, polyvinyl chloride, polyvinylidene chloride, low melting point polyester, low melting point polyamide, etc., and upper and lower layer cloths 1 and 1'constituting the bag and for joining. The warp yarns 6 and 7 are natural fibers such as cotton, hemp and wool, inorganic fibers such as metal, glass and carbon, regenerated fibers such as cellulose and protein, synthetic polyamide, polyester, polyacryl, polyvinyl and alcohol. Use fiber.

Also, when using pull-out wefts for release wefts 4, 4 ',
The drawn-out weft is composed of a floating structure or a structure such as a wanna structure, and as a fiber that can be easily drawn out, a monofilament, a twisted yarn, or the like is used, which is a long-fiber yarn having a good smoothness, and forms a bag body. The upper and lower layer fabrics 1 and 1'and the joining warp yarns 6 and 7 have a woven structure and a yarn structure that do not cause tissue collapse, deformation, and the like due to drawing of the drawn weft. If the tissues of the upper and lower fabrics 1, 1'and the joining warp yarns 6, 7 collapse due to the pulling out of the drawn weft, the bag becomes poor or deformed, and a stable bag can be obtained. Absent.

The drawn-out weft used in the present invention, the structure and the like are not particularly limited in use as long as they satisfy the above structural requirements, and various fibers and structures can be used, and the purpose of use,
It may be appropriately selected according to the content of use, application, etc. For example, as the drawn-out weft, a monofilament of a long-fiber yarn such as an inorganic fiber or a synthetic fiber, or a twisted yarn is used, and further, the weft has a thickness almost equal to or larger than that of the base yarn constituting the bag body. Forms a floating structure between the joints in the width direction.

In the present invention, when the release wefts 4, 4 ′ are removed to release the crossing (structure) of the release joints, or when the product is used as a product after release, the joining warp yarns 6, 7 are bags (woven fabrics). ) May slide over the entire length direction, and thickness unevenness may occur in the layer spacing.Therefore, the friction coefficient between the joining warp threads 6,7 and the ground structure is improved to prevent the slippage of the joining warp threads 6,7. Try.

In order to prevent this slippage, the cover factor (K) in at least one direction of a part or all of the tissue parts where the warp yarns 6 and 7 for joining are present is (K) ≧ 13. However, the cover factor (K) is And f is the number of threads per inch (thread / in) N =
The constant count (here, cotton count) is shown. When a fiber other than cotton fiber is used, it is calculated by the following equation with a conversion factor (q) taking the specific gravity into consideration. Ie Where ρ _c is the specific gravity of the cotton fiber ρ _f is the specific gravity of the fibers used other than cotton.

In the present invention, the ground warp yarns on both sides of the joining warp yarns 6 and 7 are densified or the ground weft yarns in the unreleased joint portion are densified to prevent slipping, or have a high density portion 9 in which both are used together. , The cover factor of the high density portion 9 is K ≧
Achieved with 13. When K <13, the slippage of the joining warp yarns 6 and 7 cannot be sufficiently suppressed, the thickness of each joining portion of the upper and lower layers changes, and the overall thickness shape becomes poor, and the desired uniform thickness is obtained. Cannot obtain a layered bag. In addition, the warp yarns 6 and 7 for joining and the ground yarn of the high density portion 9 are irregularly shaped yarns,
It is also preferable to use a denier yarn such as a different denier yarn, a twisted yarn, or a yarn having a fluffy surface, or a processed yarn that has been subjected to resin processing, rubber processing, or the like to further prevent slippage, and the thread to be used. Etc. are not particularly limited.

The thickened bag body of the present invention configured as described above is not particularly limited to the thread weaving structure, the method for setting the joint portion, the method for setting the release portion, the joint form, etc. It can be appropriately selected, designed, and used depending on the usage content, application, etc. Next, one example of each aspect of the thickened bag according to the present invention will be specifically described below. In FIG. 1, the bonding warp yarns 6 are alternately woven through the upper and lower layer fabrics 1, 1'with an initial (when weaving) thickness t. That is, the joining warp 6 partially intersects with the wefts of the layers 1 and 1 ', and a plurality of joints 1a, 1b, 1c, ... on the upper layer cloth 1 side and 2a on the lower layer cloth 1'are joined together. , 2b, 2c ... It consists of multiple joints.

At these joints, 1a, 1b, 1c, 1e, 1 on the upper cloth 1 side
f, 1g and 2a, 2b, 2c, 2d, 2e, 2f on the side of the lower layer fabric 1'use one release weft yarn 4, 4'for each release joint part, and for the other joint parts 1d, 2g A plurality of ground wefts 3 and 3'are used, and reinforcing wefts 8 and 8'are used as the ground wefts in the part where the joining warp 6 is converted into the opposite layer. FIG. 2 is a plan view thereof, in which the joining warp yarns 6 are arranged at predetermined intervals in the width direction in the length direction of the upper and lower layer cloths 1 and 1 ′ as shown by the solid line and the broken line, and are thick. In the portion shown by the solid line, the release wefts 4 and 4'and the reinforcing wefts 8 and 8'are crossed with each other. Further, both sides of the joining warp yarn 6 are composed of the high density portion 9 of the ground weft yarn.

In order to increase the thickness of this bag, the release joints using the release wefts 4, 4 ', that is, 1a, 1b, 1c and 1e, 1f, 1g on the upper fabric 1 side, the lower fabric 1'side 2a, 2b, 2c and 2d, 2e, 2f of the release weft yarns 4, 4'are removed to form the joining warp yarn 6
Is released from the layer of the release joining portion, and as shown in FIG. 3, the released joining warp yarn 6 can itself separate the upper and lower layer cloths 1 and 1'to a desired interval T. is there.
The layer spacing T of the thickened bag shown in FIG. 3 is the initial thickness t.
It is about 7 times as high. On the other hand, in the joint, the ground weft
The joints 1d and 2g made of 3,3 'do not change at all and retain the initial joint state.

4 to 6 show a thickened bag similar to that shown in FIG. 1, in which warp yarns 6 and 7 for joining the upper and lower layer cloths 1 and 1 are adjacent to each other and the upper and lower layer cloths 1 and 1'are joined together. , Which are woven symmetrically with each other, and the joining portion on the side of the upper layer cloth 1 forms 1b, 1d, 1f by the joining warp threads 6 and 1a, 1c, 1e by the joining warp threads 7, Contrary to the above, on the side of the lower layer fabric 1 ', the warp yarns 7 for joining 2a, 2
c, 2e is also formed with warp yarns 7 for joining to form 2b, 2d, 2f, and among the joining portions, the releasing joining portion having the releasing weft yarns 4, 4 ′ is 1a, 1b, 1d, on the upper layer cloth 1 side. 1e, on the lower layer cloth 1'side, 2a, 2b, 2
In the d and 2e, one release weft yarn 4 and 4'are used to intersect with each other, and the other joints 1c, 1f, 2c and 2f are provided with a plurality of ground weft yarns 3 and 3 ', respectively.

As in the previous example, by removing the release weft yarns 3 and 3'of this bag, the upper and lower layer fabrics 1 and 1 by the joining warp yarns 6 and 7 released from the upper and lower layer fabrics 1 and 1'as shown in FIG. , 1'can be separated at a desired interval with an X-shaped bond, and the layer interval t of this fabric is about three times the initial thickness t.

In the above-mentioned example, the weave forms of FIGS. 1 and 4, the layer spacing T≈ (N
It is possible to obtain one having a thickness of +1) · t. However, N represents the total number of release joints generated in the upper and lower layers in the portion where the upper and lower layers are to be separated from each other, by the number of release joints using the release wefts 4, 4 '.

FIG. 7 shows that the joining warp yarns 6 pass through the upper and lower layer cloths 1 and 1 ′, the upper layer cloth 1 has the joining portions 1a, 1b, 1c, and the lower layer cloth 1 ′ has 2a, 2b, and 2a.
2c ......, the release weft 4 is used only for the upper layer fabric 1 in each of the joints 1a, 1b, 1d, 1e, 1f, 1g, and the other joints are ground weft 3 , 3'are each used and a reinforcing weft 8,8 'is used.

Further, in a part of the structure having the joining warp yarn 6, that is, in the joining portions 1c, 1h and 2f, the high density portion 9 is formed by the ground weft yarn. By removing the release weft yarn 4 of the bag body, the joining warp yarns 6 are released from the release joining portions 1a, 1b, 1d, 1e, 1f, 1
It becomes a loop from g and is liberated, and the joint part 2 of the lower layer cloth 1 '
As shown in FIG. 8, the tissues b, 2c and 2d, 2e and 2g, 2h are slid, and as shown in FIG.
Separate the 1'interval, and join the joints 2b and 2c of the lower layer fabric 1 '.
The warp yarns 6 for joining which slid the tissues 2d, 2e and 2g, 2h form new tissues 2A, 2B, 2C together with the joints.

The layer interval T of this bag is about 5 times the initial thickness t.

FIG. 9 shows the same woven structure as that of the thickened bag shown in FIG. The warp yarn 6 for joining is passed through the upper and lower layer cloths 1, 1 ',
The upper layer cloth 1 is composed of joints 1a, 1b, 1c ..., and the lower layer cloth 1'is composed of joints 2a, 2b, 2c .. At the joints, the release wefts 4, 4'are 1a, 1c and Each of the joints of 2e is composed of a plurality of joints, and the other joints 1b, 1d, 1e and 2a, 2b,
2c and 2d are composed of one or more ground wefts 3 and 3'and reinforcing wefts 8 and 8 '.

Furthermore, a part of the structure having the warp 6 for joining, that is, the joining portion
1b and 2d form the high-density portion 9 by the ground weft.
By removing the released weft yarn 4, the joining warp yarn 6
Is released from the joints 1a, 1c and 2e in the form of a loop, and slides through the tissues of the joints 2b, 2c and 1d in the layer opposite to the joints, and the adjacent joints are joined as shown in FIG. The warp yarns 6 are lengthened to separate the upper and lower layer cloths 1 and 1'to a desired distance T, and new structures (floating structures in this case) 1A and 2A and 2B are formed in the layer opposite to the release joint.

The layer spacing T of this fabric is about three times the initial thickness t.

FIG. 11 shows that the upper layer fabric 1 and the lower layer fabric 1 ′ and the lower layer fabric 1 ′ and the bonding warp yarns 7 are adjacent to each other in parallel, and are alternately opposed to each other, and many similar bonding warp yarns are woven in the width direction. It is a composition. In this bag body, in the upper layer cloth 1, the joining warp yarns 6 form joining portions in four weft yarns, and the joining portions 1b, 1d, 1f, 1h,
1j, 1 is composed of reinforcing wefts 8, while joining parts 1a, 1c, 1e, 1g, 1i, 1k are formed between the joining parts by the joining warp yarns 7,
Of the joints, 1a, 1e, 1i are constituted by the release wefts 4, and the other joints 1c, 1g, 1k are constituted by the ground wefts 3. On the other hand, the lower layer fabric 1'side has a joint portion and a joint portion structure which are symmetrically similar to the above structure. That is, the warp yarns 6 for joining are 2a, 2c, 2e, 2
g, 2i, 2k, among these joints, 2a, 2e, 2i are composed of release wefts 4 ', and other joints 2c, 2g, 2k are composed of ground wefts 3'. In between, by the warp 7 for joining,
It has a joint portion of 2b, 2d, 2f, 2h and 2j, and the joint portion is constituted by a reinforcing weft 8 '. Furthermore, warp for joining
Both sides of 6 and 7 are composed of the high density portion 9 by the ground warp.

By removing the release wefts 4, 4'of this bag,
As shown in the figure, the splicing warp yarns 6 and 7 released in a loop shape.
Are the joints using the reinforcing wefts 8 and 8 '(1b, 1,
d, 1f, 1h, 1j, 1, 2b, 2d, 2f, 2h, 2j, 2l for lower layer fabric 1 ')
The tissue is slid to increase the vertical joining intervals between the releasing joining portions for removing the releasing wefts 4 and 4'and separate the layers to a desired spacing T. That is, in the upper layer fabric 1, the joining warp yarns 7 are
Release of 1a, 1e, 1i The release weft 4 at the joint is removed and liberated into a loop, and 2b, 2d, 2f, 2h, 2j, 2l are slid respectively to 2
Between b and 1c, between 1c and 2d, between 2f and 1g, between 1g and 2h,
Also, the layers are separated by increasing the length between 2j and 1k and between 1k and 2l. On the other hand, in the lower layer cloth 1 ', the joining warp yarn 6
Removes the release weft 4'of the release joint of 2a, 2e, 2i and releases it in a loop shape, and slides 1b, 1d, 1f, 1h, 1j, 1 respectively, between 1b and 2c, 2c and Between 1d, between 1f and 2g, 2g and 1h
Between layers, and between 1j and 2k, and between 2k and 1, the layers are separated, and in each layer, new structures 1A, 1B, 1C, 1D,
Form 2A, 2B, 2C, 2D ....

The layer spacing T of this bag is about twice the initial thickness t. That is, as shown in FIG. 13, this bag is a warp for joining.
It is possible to obtain a three-dimensional thick layer structure in which the upper and lower fabrics 1 and 7 are connected by 6,7.

The thick-layered bag body configured as described above is sewn around the woven fabric,
The bag is closed by a process such as adhesion or fusion, and a surface or an end is provided with an injection port for filling a material. It is used as a molded product structure for civil engineering and construction, industrial materials, and interior bedding, which is filled and filled with the mixture material.

For example, mortar, concrete, earth and sand, vegetation base material, etc. are filled and sealed, and for civil engineering such as slope protection, revetment work, greening work, etc., or resin, water, air etc. Seawall, river bank, civil engineering such as temporary dam, soundproof wall, awning, construction such as air dome, boat, float, marine material as cushioning material, transportation material, cushion, physical education as cushioning material, interior It can be used for bedding, or by filling and enclosing powder such as grain, and used as a container, a bag for transportation, etc., and the bag is appropriately designed and used according to the application. In particular, when air and water are to be filled and sealed, in order to provide airtightness, the front and back surfaces are coated with rubber, etc.
The present invention is not limited to this.

〔Example〕

Example 1 In a two-layer woven fabric in which the initial thickness between the upper and lower layers is set to 20 mm (the ground warp and the weft of each layer are Ny840d × 22 yarns / in: the unidirectional cover factor is about 10), every 100 mm in the width direction. Welding warps (Ny 30,000d twisted yarns) that join the upper and lower layers are arranged in the upper and lower layers, and a releasing joint is provided at intervals of 100 mm in the length direction, and weak wefts (rayon 300d: strong 500g) are used as releasing wefts.
Using 6 times in the upper and lower layers, repeating 7 times in a loop,
Furthermore, the width of about 5 mm on both sides of the warp for joining is higher than that of the ground warp (Ny840
The cover factor (K) in the longitudinal direction set to d × 35 / in) is approx.
A bag body (2m width x 5m length) in which the periphery of a two-layer fabric that is 16 is closed by sewing, and an injection port for material filling is attached to the end.
Was prepared (the organizational structure has the same structure as in FIGS. 1 and 2).

Laying this bag body on the slope, as a result of filling and encapsulating the fluid concrete from the inlet at a pressure of about 0.6 atm, the weak yarn weft is easily cut by the filling pressure to release the release joint, Layer spacing at the joint (that is, joint yarn length)
A concrete molding having a thick layer of about 150 mm was obtained.
Further, the layer spacing after the release had almost the same thickness at each location. Further, the surface of the concrete molded product had almost flatness. Furthermore, the size of the concrete molding is almost the same as the size of the initial bag,
Almost no surface contraction of the bag was observed.

Example 2 In a two-layer woven fabric in which the initial thickness between the upper and lower layers was set to 30 mm (PP1000d × 20 yarns / in for each layer, the ground warp and the weft of each layer have a unidirectional cover factor of about 11), at intervals of 180 mm in the width direction. Welding warps (PET 50,000d twisted yarn) for joining the upper and lower layers are arranged in the upper and lower layers, and releasing joints are provided at intervals of 180 mm in the length direction. The releasing joints have reinforcing wefts and releasing wefts. In the lower layer, four times were interlaced and repeated five times in a loop shape. The reinforcing weft was composed of only the lower layer cloth, and the releasing weft was composed of only the upper layer cloth. Aligned two yarns and using a draw-out weft (PP1500d monofilament yarn) as the release weft. Furthermore, the draw-out weft has a floating structure that is not organized with the ground yarn in the warp Ida for joining in the width direction. . Furthermore, approximately 20 mm width is used in the center of the length between the joints for releasing in the longitudinal direction of the woven fabric where the warp for joining is present.
Weft direction cover factor (K) of 2000d x 20 / in)
Approximately 16 is the withdrawal of the two-layer woven fabric The withdrawal weft is removed to release the release joint, the upper and lower layers are separated, the periphery is closed by sewing, and a bag for filling material at the end is attached. (2m width x 5m length) was created (the organizational structure is No. 7)
It has the same configuration as that of the figure. ) The bag had a thick layer having a layer spacing (that is, a joining yarn length) of about 150 mm after releasing the release joining portion, and further, the thickness was uniform.

Lay it on the slope of the bag and fill it with fluid earth and sand from the inlet.
As a result of filling and enclosing at a pressure of 0.4 atm, the layer spacing (that is, the bonding thread length) at the release joint was 15
A thick-layer artificial soil molded product having a uniform thickness of approximately 0 mm and having substantially the same thickness at each location was obtained. or,
The surface of this molded product was almost flat. Furthermore,
The size of this molded product was almost the same as the size of the initial bag, and the surface shrinkage of the bag was extremely small.

Example 3 In a two-layer woven fabric in which the initial thickness between the upper and lower layers is set to 20 mm (the ground warp yarn and the weft yarn of each layer are Ny420d × 45 yarns / in: the unidirectional cover factor is about 15), at 60 mm intervals in the width direction. The joining warp (Ny2500d) that joins the upper and lower layers is arranged in the upper and lower layers, and the releasing joints are provided at intervals of 60 mm in the length direction, and the dissolving weft (water-soluble vinylon 100d) is used as the releasing weft in the upper and lower layers. 4 times and repeated 5 times in a loop, and the width of the warp for joining is about 5 mm on both sides, and the ground warp has a high density (Ny420d × 60 yarns / i).
The two-layer woven fabric having the warp direction cover factor (K) of about 20 above is subjected to hot water treatment to dissolve the dissolved weft yarn in water to release the release joint, and then the front and back surfaces of the woven fabric are coated with rubber. , Airtight bag body (2m
(Width x 5 m length) was created (the organizational structure has the same structure as in Figs. 4 and 5).

The bag body had a thick layer having a layer interval (that is, a joining thread length) of about 100 mm after releasing the release joining portion, and further had a uniform thickness.

As a result of filling the bag body with flat ground and filling and enclosing water at 0.25 atm from the inlet, the layer spacing (that is, the joining thread length) at the release joining portion is a thick layer that maintains the initial layer spacing of 100 mm, In addition, a water body molded product having a uniform thickness, in which the thicknesses at the respective places are almost the same, was obtained. Further, the surface of this molded article had almost flatness. Further, the size of the molded product was almost the same as the size of the initial bag, and the surface shrinkage of the bag was extremely small.

Comparative Example 1 In the configuration of Example 1, the slippage of the joining warp was not prevented, and the density of the joining warp was equal to the ground density (Ny840d × 22 yarns).
/ in) cover factor (K) is about 10,
All others were laid on the slope with the same structure, and the flowable concrete was filled and sealed at a pressure of about 0.6 atm from the injection port.As a result, the weak yarn weft was easily cut by the filling pressure and released and joined. The section was released, and a concrete molded article having a thick layer spacing (that is, the joining thread length) at the joined portion was obtained, but the layer spacing was unequal in thickness at each location (especially the lower side of the molded article was However, the surface of the molded product could not have a stable flatness, and the molded product was partially uneven. Furthermore, the size of the concrete molded product was slightly smaller than the size of the initial bag, and the surface shrinkage of the bag was also slightly large.

Comparative Example 2 In a two-layer woven fabric in which the initial thickness between the upper and lower layers is set to 20 mm (the ground warp and ground weft of each layer are Ny840d × 22 yarns / in), the joining warp that joins the upper and lower layers at intervals of 50 mm in the width direction ( Ny1
10,000 denier twisted yarns) are arranged in the upper and lower layers, and joints are provided at intervals of 200 mm in the longitudinal direction. The warp for joining is 80 mm long at the center of the ground structure between the joints in the longitudinal direction. The circumference of a two-layer fabric having a structure that is retained in a loop shape with a length of 1.5 times is closed by sewing, and a bag body with an inlet for filling material at the end is laid on the slope, As a result of filling and encapsulating a more fluid concrete at a pressure of about 0.6 atm, the warp for joining, which had stayed in the ground structure in a loop shape, slidably moved in the thickness direction between layers due to the filling pressure,
A thick concrete molding was obtained, but the layer spacing was unequal in thickness at each location (especially, the lower side of the molded article was abnormally thick, while the upper side was abnormally thin). Stable flatness was not obtained on the surface of, and the surface of the surface was very uneven. Furthermore, the size of the concrete molding is
Compared to the size of the initial bag, the size of the bag was small and the surface shrinkage of the bag was also large.

In the bag body after the thick layer, the density of the ground warp yarns (both sides of the joining yarn) in the length direction in which the joining warp yarns are present was considerably coarse, and the cover factor (K) was about 7.

〔The invention's effect〕

Since the thickened bag body of the present invention is configured as described above, it has the following characteristics and effects.

The layers can be easily and evenly separated by an external force to separate them at desired intervals to form a thick layer.

Since the joining warp that joins the layers is almost perpendicular to the layers, there is almost no shrinkage of the bag when the material is filled.

Therefore, sticking work is possible and workability is extremely easy.

The surface morphology of the product after the interlayer expansion, that is, the thickening treatment, is such that the bonding warp takes the shape as planned, and thus the shape does not shrink, and the surface morphology of the shrinkage with the layer interval T as set in the fabric design stage is shown. There is no name form. Therefore, even when it is used as a product, it has a predetermined filling material injection shape, and its handling is extremely easy.

The joining warp that defines the spacing between layers is firmly fixed in at least one direction of some or all of the texture parts where the warp is present by a woven design with a high cover factor, so that when filling material is injected. The thickness T as designed can be obtained without slippage of the joining warp and without causing unevenness.

Since the thick layer woven fabric is joined by warp, it is easy to set the initial thickness t and manage the tension, and the weaving work is easy.

The desired spacing T between the layers can also be easily set at the stage of woven fabric design from the initial thickness t and the knitting structure of the joining warp.

Since only the warp yarns, which are the joining yarns, exist between the woven fabric layers, there is little resistance to the flow of mortar, cement, etc. injected between the woven fabrics, and the construction can be performed quickly.

Post-processing of the bag (resin processing, rubber processing, attachment of other members, etc.) is extremely easy, and it can be used in various fields.

[Brief description of drawings]

Each of the drawings relates to an embodiment of a thickened bag according to the present invention, and FIGS. 1 to 6 show a thickness in which a releasing weft is removed and a joining warp can separate layers from itself. An example of a layered bag is shown in FIG. 1 and FIG. 4 which are partial cross-sectional views of the tissue, FIG. 2 and FIG. 5 are plan views thereof, and FIG. 3 and FIG. A cross-sectional view of the tissue is shown. 7 to 10 show an example of a thickened bag body in which the releasing weft is removed and the joining warp is slid to separate the layers, and FIG. 7 and FIG. Tissue cross-sectional views, FIGS. 8 and 10 show the tissue cross-sectional views in the state where the layers are separated. FIG. 11 to FIG. 13 show an example of a bag body made up of innumerable joining warps, in which the releasing weft is removed, and the joining warps can slide to separate the layers, and FIG. Fig. 12 is a tissue cross-sectional view of the
Figure 13 shows a schematic view of the bag structure with the layers separated. 1 ... Upper layer cloth, 1 '... Lower layer cloth, 3 ... Ground weft thread (upper layer cloth), 3' ... Ground weft thread (lower layer cloth), 4 ... Release weft thread (upper layer cloth), 4 '... Release weft thread (Lower layer fabric), 5 ... Removed weft yarn (upper layer fabric), 5 '... Removed weft yarn (lower layer fabric), 6,7 ... Joining warp, 8 ... Reinforcing weft (upper layer fabric) , 8 '... Reinforcement weft (lower layer cloth), 1a to 1m ... Upper layer joint, 2a to 2m ... Lower layer joint, 1A to 1D ... Upper layer new structure, 2A to 2D ... Lower layer new Texture, t ... Layer spacing (thickness) after weaving, T ... Layer spacing (thickness) after removal of the released weft.

Claims (1)

[Claims] 1. A multi-layer cloth having a joining warp thread for joining layers between a ground warp and a layer as a warp, closing the periphery of the multi-layer cloth, and providing an injection port for material filling at an arbitrary position on the surface of the multi-layer cloth. A thickened bag body formed by providing a cover factor of 13 or more in at least one direction of a part or all of the tissue parts where the warp for bonding of the multilayer cloth is present, and Bonding with a warp for bonding without substantially damaging the warp for bonding by a physical external force, a thermal treatment, or a chemical treatment to the weft of a predetermined joint among a plurality of joints between the warp and the weft. A thickened bag body using a thread capable of releasing a portion.