JPWO2019044386A1 - A mesh sheet for forming a curved surface and a storage bag formed using this mesh sheet - Google Patents

Abstract

The present invention provides a mesh sheet and a storage bag that have a holding power and a resilience of the shape when formed into a three-dimensional shape having a curved surface and are less likely to wrinkle. The present invention has a structure of at least two layers or more of a first fiber (2) composed of a single component and a core portion and a sheath portion covering the surface of the core portion, and the melting point of the component forming the sheath portion is The warp 1a and the weft 1b are formed by arranging the second fiber (3), which is 20 ° C. or more lower than the lower of the melting point of the component forming the core and the melting point of the first fiber 2, whichever is lower, to form the warp 1a. Both the weft 1b and the weft 1b are provided with at least a second fiber (3), and an entangled portion between the second fiber (3) constituting the warp (1a) and the second fiber (3) constituting the weft (1b). Is heat-sealed, and the heat-sealing rate of the entangled portion between the second fibers (3) and (3) in the entire entangled portion of the warp (1a) and the weft (1b) is 10% or more and 45% or less. It has become.

Description

The present invention relates to a mesh sheet for forming a curved surface and a storage bag formed by using the mesh sheet.

As a disposable tea bag for extracting black tea and other components into a liquid, a flat sheet formed by bending and fusing a flat sheet into a polyhedron such as a tetrahedron using a non-woven fabric or a mesh cloth is widely used ( For example, the following Patent Document 1).

Japanese Patent No. 3956019

The triangular pyramid-shaped or cubic-shaped tea bag disclosed in Patent Document 1 is difficult to maintain its shape and is easily deformed, and the resilience of the shape when deformed is small. Therefore, the tea bag has a problem that the filter does not easily spread in the liquid at the time of component extraction, which may hinder the spread or movement of tea leaves. In particular, the conventional mesh fabric used for such tea bags is difficult to have the holding power of the shape at the time of three-dimensional molding and the resilience when the shape is deformed, and is flexible when trying to have the shape holding power and the like. Wrinkles were likely to occur when molding into a curved shape such as a sphere.
Therefore, the present invention provides a mesh dough that has a shape-holding power and a resilience and is less likely to wrinkle when formed into a three-dimensional shape having a curved surface, and a beverage extraction bag formed by such a mesh dough.

The mesh sheet for forming a curved surface of the present invention has a structure of at least two layers or more of a first fiber composed of a single component and a core portion and a sheath portion covering the surface of the core portion, and forms the sheath portion. The warp and the weft are formed by arranging the second fiber whose melting point of the component is 20 ° C. or more lower than the lower of the melting point of the component forming the core and the melting point of the first fiber, whichever is lower. Both of the wefts are provided with at least the second fiber, and the entangled portion between the second fiber constituting the warp and the second fiber constituting the weft is heat-sealed, and the warp and the warp are fused. The heat fusion rate of the entangled portion between the second fibers in the entire entangled portion of the weft is 10% or more and 45% or less.
According to this configuration, when the mesh sheet of the present invention has a three-dimensional shape having a curved surface, it has a spherical shape holding force and a resilience, and wrinkles and the like are less likely to occur.

The mesh sheet of the present invention has a structure of at least two layers of a first fiber composed of a single component and a core portion and a sheath portion covering the surface of the core portion, and the melting point of the component forming the sheath portion is The warp and weft are formed by arranging the melting point of the component forming the core portion and the first fiber and the second fiber which is 20 ° C. or more lower than the lower of the melting points, and forms the warp and the weft, and forms the warp and the weft. The first fiber and the first fiber are provided with at least the second fiber, and the entangled portion between the second fiber constituting the warp and the second fiber constituting the weft is heat-sealed. The number of the warp yarn and the second fiber constituting the weft yarn is 33% or more and 70% or less with respect to the total number of the fibers of 2.
According to this configuration, when the mesh sheet of the present invention has a three-dimensional shape having a curved surface, it has a spherical shape holding force and a resilience, and wrinkles and the like are less likely to occur.

In the warp yarns forming the mesh sheet of the present invention, one or two of the second fibers are alternately arranged each time one or two of the first fibers are arranged, and the weft yarn is the weft. Every time one or two first fibers are arranged, one or two of the second fibers may be arranged alternately.

In either one of the warp and the weft forming the mesh sheet of the present invention, the first fiber and the second fiber are alternately arranged in units of one or two, and the warp and the warp and the weft are arranged alternately. On the other side of the weft, one of the second fibers may be arranged for every three of the first fibers arranged.

Either one of the warp and the weft forming the mesh sheet of the present invention is composed of a second fiber, and the warp and the other of the weft are formed every time three of the first fibers are arranged. One of the second fibers may be arranged.

The fiber densities of the warp and weft that form the mesh sheet of the present invention may be 70 or more and 120 or less per inch, respectively.

The first fiber and the second fiber forming the mesh sheet of the present invention may be monofilaments.
According to this configuration, it is easy to maintain the transparency, tension and elasticity of the first fiber and the second fiber.

The storage bag of the present invention includes any of the above mesh sheets, and the mesh sheet is molded into a three-dimensional shape having a curved surface.
According to this configuration, any of the above actions or functions is exhibited.

The mesh sheet and the storage bag of the present invention have a holding power and a recovering power of the shape when they are formed into a three-dimensional shape having a curved surface, and have an effect that wrinkles and the like are hard to be formed.

It is a top view which showed a part of the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the comparative example with respect to the mesh sheet which is one Embodiment of this invention by enlarging. It is a top view which showed a part of the comparative example with respect to the mesh sheet which is one Embodiment of this invention by enlarging. It is a figure which showed typically the storage bag which is one Embodiment of this invention.

Hereinafter, embodiments of the mesh sheet and the storage bag capable of holding a curved surface of the present invention will be described with reference to the drawings.

In the mesh sheet of the present invention, a mesh-like plain woven fabric in which at least a part of the entangled portion is heat-sealed by heat treatment (also referred to as "set processing") is used.
As the filament forming the mesh sheet, a first fiber composed of a single component and a second fiber using a plurality of components having different melting points from the first fiber are used.

As the first fiber, a synthetic fiber having heat-sealing property made of polyethylene, polypropylene, polyurethane, nylon, polyester, polylactic acid or the like is used, and polyester, polylactic acid, nylon or the like is more preferably used.

Further, as the first fiber, either monofilament or multifilament can be used, but the mesh sheet of the present invention is more preferably monofilament from the viewpoint of fiber transparency, tension and retention of elasticity. Used for.

In this embodiment, a monofilament made of homopolyester is used as an example of the first fiber. In the present specification, homopolyester is a polycondensate product of ethylene glycol and terephthalic acid, which is a component of polyester fibers widely used at present.

The second fiber has a structure of at least two layers or more of a core portion and a sheath portion that covers the surface of the core portion and forms the surface of the fiber, and in the present embodiment, it has a two-layer structure of a core and a sheath. Fiber is used.
As the component forming the core portion, the same component as that of the first fiber can be used.
As the component forming the sheath portion, a component having a temperature lower than the melting point of the first fiber and the melting point of the component of the core portion, whichever is lower, is used.

As the material of the core of the second fiber, a synthetic fiber having heat-sealing properties made of polyethylene, polypropylene, polyurethane, nylon, polyester, polylactic acid, etc. can be used as in the material of the first fiber. In particular, polyester, polylactic acid, nylon and the like are preferably used. As the material of the sheath portion of the second fiber, a material having a melting point lowered as described above by adding another component to the material of the core portion or adjusting the degree of polymerization can be used.

Either monofilament or multifilament can be used for the second fiber. In the mesh sheet of the present invention, monofilament is more preferably used from the viewpoint of fiber transparency, tension and retention of elasticity.

In the present embodiment, as an example of the second fiber, a monofilament using polyester as a core component and polyester fiber containing terephthalic acid and isophthalic acid as a sheath component is used. The polyester fiber containing terephthalic acid and isophthalic acid refers to a fiber made of a polymer containing ethylene terephthalate unit and ethylene isophthalate unit in the polyester molecule.

The ratio of the core component in the second fiber is preferably 50% by volume or more and 75% by volume or less. If the ratio of the core component is less than 50% by volume of the entire second fiber, the ratio of the sheath component is 50% by volume or more of the whole, so that the mesh sheet cannot withstand the temperature of the woven fabric refining and finishing process. In addition, the degree to which the entangled portions of the second fibers are fused increases, and the hard properties of the entire fibers are lost, resulting in remarkably softening. That is, the shape retention of the storage bag becomes insufficient. Further, when the ratio of the core component is 75% by volume or more, the second fiber becomes too hard, the texture of the storage bag becomes hard, wrinkles are easily formed, and the bending recovery property is lowered.

The thickness of the first fiber and the second fiber may be 15 dtex or more and 60 dtex or less. The thickness of the first fiber and the second fiber is preferably 20 to 35 dtex, and more preferably 22 to 33 dtex. A fineness of 20 to 35 dtex is excellent in weaving stability in the weaving process at the time of weaving, and it is easy to obtain a woven mesh sheet having a good texture (flexibility).

In the mesh sheet, a warp in which the first fiber and the second fiber are regularly arranged and a weft in which the first fiber and the second fiber are regularly arranged are made into a plain weave, and the warp and the weft are formed. It is a sheet heat-sealed so as not to peel off the entangled portion between the second fibers of the above.
The heat treatment of the mesh sheet is set to a temperature lower than the melting point of the first fiber and the melting point of the core portion of the second fiber, whichever is lower, and higher than the melting point of the sheath portion. The heat treatment is carried out by a method usually performed by those skilled in the art.
The fiber density of the mesh sheet can be 70 or more and 120 or less per inch in both the vertical and horizontal directions.

By the heat treatment of the mesh sheet, the entangled portions of the second fibers are heat-sealed to the extent that the fibers do not shift from each other. Further, the entangled portion between the first fiber and the second fiber is not completely fused because only the sheath portion of the second fiber is melted, and is less than the extent to which the first fiber and the second fiber can be peeled off. It is in a state of being fused or not fused due to its strength. The entangled portions of the first fibers are not fused to each other.
Here, "the degree to which the fibers are displaced from each other" means that a part of the fused entangled portion is peeled off or peeled off without breaking the fibers, so that a misalignment occurs.

The fusion rate of the entangled portions of the mesh sheet, that is, the ratio of the entangled portions of the second fibers fused to each other to the entangled portions of the entire mesh sheet is set in the range of 10% or more and 45% or less of the whole.
In other words, the number of the second fibers constituting the warp and the weft is in the range of 33% or more and 70% or less with respect to the total number of the first fibers and the second fibers constituting the warp and the weft of the mesh sheet. It is set.

The first in the warp and weft that satisfies the fusion rate of the entangled portion or the ratio of the total number of the second fibers to the total number of the first fibers and the second fibers used in the warp and the weft forming the mesh sheet. Various patterns are conceivable as the arrangement pattern of the first fiber and the second fiber. In order to calculate the fusion rate of the entangled portion of a mesh sheet having various arrangement patterns, first, the minimum units of the arrangement patterns of the first fiber and the second fiber constituting each of the warp and the weft are overlapped with each other. A portion (hereinafter referred to as "minimum area of array pattern" S) is set. Then, it can be calculated by dividing the "total number of entangled portions of the second fibers" in the minimum region S of the arrangement pattern by the "total number of entangled portions of the second fibers". The ratio of the second fiber in the entire sheet is calculated by dividing the "total number of second fibers" in the minimum region S of the arrangement pattern by the "total number of first fibers and second fibers". be able to.

The reason why the fusion rate of the entangled portion of the mesh sheet is 10% or more of the entire entangled portion is that the fusion rate is less than 10% (in other words, the first fiber and the second fiber constituting the mesh sheet). When the total number of second fibers is less than 33% of the total number of fibers), when the mesh sheet is formed into a three-dimensional object having a curved surface such as a sphere, the mesh sheet tends to return to a flat shape, so the curved surface is formed. This is because it becomes difficult (it becomes easy to become flat).

Further, the reason why the fusion rate of the entangled portion of the mesh sheet is 45% or less of the entire entangled portion is that the fusion rate is higher than 45 (in other words, the first fiber and the second fiber constituting the mesh sheet and the second When the total number of second fibers is larger than 70% of the total number of fibers), when the mesh sheet is formed into a three-dimensional curved surface, especially a spherical surface, the mesh sheet is hardened and the repulsive force becomes insufficient. This is because the recovery force (or recovery force) when the curved surface is deformed is insufficient. Another reason is that the mesh sheet lacks flexibility and is prone to wrinkles when formed into a curved surface.
The fusion rate of the entangled portion of the mesh sheet is preferably 12% or more and 40% or less, and most preferably 25%. The ratio of the second fiber in the entire mesh sheet is more preferably 30% or more and 65% or less, and most preferably 50%.

Arrangement of the first fiber and the second fiber of the warp and the weft, respectively, in which the fusion rate of the entangled portion is 10% or more and 45% or less, or the ratio of the second fiber in the entire sheet is 33% or more and 70% or less. Examples of the mesh sheet having a pattern include the following.

[1] Every time one or two first fibers are arranged, a warp yarn in which one or two second fibers are arranged alternately and one or two first fibers are arranged. A mesh sheet in which wefts in which one or two second fibers are alternately arranged are woven in a plain manner, and the second fibers are fused to each other. This arrangement pattern includes the following patterns more specifically. ..
(I) As shown in FIG. 1A or FIG. 1B, the first fiber 2 and the second fiber 3 alternate in units of one or two fibers in each of the warp threads 1a and the weft threads 1b of the mesh sheet 1. (Ii) As shown in FIG. 1C, the warp threads 1a of the mesh sheet 1 are alternately arranged with the first fibers 2 and the second fibers 3 one by one, and the weft threads 1b have a first fiber. Pattern in which two fibers 2 and two fibers 3 of 1 are arranged alternately (iii) As shown in FIG. 1D or FIG. 1E, one first fiber 2 is included in the warp 1a of the mesh sheet 1. , One second fiber 3, one first fiber 2, and two second fibers 3 are arranged in this order, and the weft 1b has the first fiber 2 and the second fiber. A pattern in which the same number of 3's are arranged alternately in units of 1 or 2.
(Iv) As shown in FIG. 1F, one first fiber 2, one second fiber 3, and one first fiber 2 are provided for both the warp 1a and the weft 1b of the mesh sheet 1. A pattern in which two second fibers 3 are arranged in this order.
(V) Although not shown, a pattern in which the patterns of the warp threads 1a and the patterns of the weft threads 1b of the (ii)-(iv) mesh sheet 1 are interchanged.

[2] As shown in FIG. 2A or FIG. 2B, one of the warp 1a and the weft 1b (weft 1b in this example) of the mesh sheet 1 contains a first fiber 2 and a second fiber 3. The same number of books or two fibers are alternately arranged, and every time three first fibers 2 are arranged on the other side of the warp 1a and the weft 1b (warp 1a in this example), the second fiber 3 is arranged. Pattern in which one is arranged

[3] As shown in FIG. 3, a second fiber 3 is used for either one of the warp 1a and the weft 1b (weft 1b in this example) of the mesh sheet 1, and the other of the warp 1a and the weft 1b is used. (In this example, the warp 1a) has a pattern in which three first fibers 2 and one second fiber 3 are alternately arranged.

The arrangement pattern that satisfies the conditions of the fusion rate of the entangled portion and the ratio of the second fiber 3 in the entire mesh sheet 1 is not limited to the above, but according to these conditions, the intersecting portion between the first fibers 2 is Arrangement patterns and the like in which three or more consecutive points are formed in the vertical and horizontal directions are excluded.

Hereinafter, examples of the present invention will be shown. The present invention is not limited to the contents shown in the examples.

[Example 1]
As the first fiber 2, a fiber (22dtex) composed of a homopolyester component is used, and as the second fiber 3, the core is composed of the same component as the first fiber 2 and the sheath is a polyester having a melting point of 190 ° C. A polyester fiber (28dtex) having a core-sheath structure in which the ratio of the second fiber 3 in the core portion to the whole was 50% by volume was used.
As shown in FIG. 1A, for both the warp threads 1a and the weft threads 1b, a plain woven mesh sheet 1 in which the first fiber 2 and the second fiber 3 are alternately arranged one by one was used. This mesh sheet 1 was refined, washed with water, dried, and then heat-treated at 195 ° C.
After that, the molding heater temperature was set to 140 ° C., and the heat-treated mesh sheet 1 was placed in a mold and molded into a hemispherical shape.
Results of determining the fusion rate of the entangled portion of the molded mesh sheet 1, the ratio of the second fiber 3 to the entire mesh sheet 1, the protruding height and shape of the hemisphere, the resilience, and the presence or absence of wrinkles near the opening. Is shown in Table 1.

[Example 2]
As shown in FIG. 1B, both the warp threads 1a and the weft threads 1b use the mesh sheet 1 formed in the same manner as in the first embodiment except that the first fibers 2 and the second fibers 3 are alternately arranged by two. Then, the heat treatment was performed under the same conditions as in Example 1 to form a hemisphere.
Results of determining the fusion rate of the entangled portion of the molded mesh sheet 1, the ratio of the second fiber 3 to the entire mesh sheet 1, the protruding height and shape of the hemisphere, the resilience, and the presence or absence of wrinkles near the opening. Is shown in Table 1.

[Example 3]
As shown in FIG. 1C, the warp yarn 1a is arranged with the first fiber 2 and the second fiber 3 alternately one by one, and the weft yarn 1b is provided with the first fiber 2 and the second fiber 3. Using the mesh sheet 1 formed in the same manner as in Example 1 except for the points where the fibers were alternately arranged one by one, heat treatment was performed under the same conditions as in Example 1 to form a hemisphere.
Results of determining the fusion rate of the entangled portion of the molded mesh sheet 1, the ratio of the second fiber 3 to the entire mesh sheet 1, the protruding height and shape of the hemisphere, the resilience, and the presence or absence of wrinkles near the opening. Is shown in Table 1.

[Example 4]
As shown in FIG. 2A, one second fiber 3 is arranged in the warp 1a for every three first fibers 2 arranged, and the first fiber 2 and the second fiber are arranged in the weft 1b. A hemisphere was formed by performing heat treatment under the same conditions as in Example 1 using the mesh sheet 1 formed in the same manner as in Example 1 except that the three fibers were alternately arranged one by one.
Results of determining the fusion rate of the entangled portion of the molded mesh sheet 1, the ratio of the second fiber 3 to the entire mesh sheet 1, the protruding height and shape of the hemisphere, the resilience, and the presence or absence of wrinkles near the opening. Is shown in Table 1.

[Example 5]
As shown in FIG. 2C, two first fibers 2 and two second fibers 3 are alternately arranged in the warp 1a, and every time three first fibers 2 are arranged in the weft 1b, the first fiber 2 is arranged. A hemisphere was formed by heat treatment under the same conditions as in Example 1 using the mesh sheet 1 formed in the same manner as in Example 1 except that one fiber 3 of 2 was arranged.
Results of determining the fusion rate of the entangled portion of the molded mesh sheet 1, the ratio of the second fiber 3 to the entire mesh sheet 1, the protruding height and shape of the hemisphere, the resilience, and the presence or absence of wrinkles near the opening. Is shown in Table 1.

[Example 6]
As shown in FIG. 3, except that the warp yarn 1a is arranged with one second fiber 3 for every three first fibers 2 arranged, and the weft yarn 1b is all used with the second fiber 3. Was heat-treated under the same conditions as in Example 1 using the mesh sheet 1 formed in the same manner as in Example 1 to form a hemisphere.
Results of determining the fusion rate of the entangled portion of the molded mesh sheet 1, the ratio of the second fiber 3 to the entire mesh sheet 1, the protruding height and shape of the hemisphere, the resilience, and the presence or absence of wrinkles near the opening. Is shown in Table 1.

[Comparative Example 1]
As shown in FIG. 4A, both the warp threads 1a and the weft threads 1b are formed in the same manner as in the first embodiment except that one second fiber 3 is arranged every time three first fibers 2 are arranged. A hemisphere was formed by heat-treating the mesh sheet X under the same conditions as in Example 1.
Results of determining the fusion rate of the entangled portion of the molded mesh sheet X, the ratio of the second fiber 3 in the entire mesh sheet X, the protruding height and shape of the hemisphere, the resilience, and the presence or absence of wrinkles near the opening. Is shown in Table 1.

[Comparative Example 2]
As shown in FIG. 4B, the warp yarns 1a are arranged with the first fibers 2 and the second fibers 3 alternately one by one, and the weft yarns 1b are all used with the second fibers 3. Using the mesh sheet X formed in the same manner as in No. 1, heat treatment was performed under the same conditions as in Example 1 to form a hemisphere.
Results of determining the fusion rate of the entangled portion of the molded mesh sheet X, the ratio of the second fiber 3 in the entire mesh sheet X, the protruding height and shape of the hemisphere, the resilience, and the presence or absence of wrinkles near the opening. Is shown in Table 1.

[Comparative Example 3]
A hemisphere was formed by heat-treating under the same conditions as in Example 1 using a mesh sheet X formed in the same manner as in Example 1 except that the second fiber 3 was used for the warp 1a and the weft 1b. ..
Results of determining the fusion rate of the entangled portion of the molded mesh sheet X, the ratio of the second fiber 3 in the entire mesh sheet X, the protruding height and shape of the hemisphere, the resilience, and the presence or absence of wrinkles near the opening. Is shown in Table 1.

[Evaluation method]
The fusion rate of the entangled portion of the second fibers 3 to the entire entangled portion and the ratio of the first fibers 2 and the second fibers 3 used for the mesh sheet 1 of the second fibers 3 to the entire entangled portion are calculated as described above. Calculated by the method. In Example 6 and Comparative Example 2, the second fiber 3 is used for the weft 1b, but in order to see the ratio in the whole, the arrangement pattern of the warp 1a is set as the minimum number of the arrangement pattern of the weft 1b. It was set to be the same as the number of the minimum unit of.

Regarding the shape of the formed sphere, it was visually judged whether the outer edge of the curve was close to a perfect circle or looked flat. For resilience, it is visually judged whether or not the molded hemisphere returns to its original shape when it is pushed slowly enough to make a dent with a finger. ○: Return, △: A little dent remains, ×: It was evaluated according to the criteria that the dent does not return. Wrinkles near the openings were evaluated on the basis of almost no (not visible), very slight, slight, noticeable or very noticeable.

[Evaluation results]
As shown in Table 1, in the hemispherical molded product of Example 1-6, the shape of the sphere was maintained in a beautiful shape close to a perfect circle, and the resilience was sufficient. In addition, there were almost no wrinkles near the opening, and the wrinkles were very slight or slight and inconspicuous.

Further, as shown in FIG. 5, there is also a case where the storage bag 10 is formed by heat-sealing the entire circumference of the openings in a state where the openings of the molded product of Example 1-6 are butted against each other and tea leaves are put inside. It maintained a substantially clean spherical shape and had sufficient resilience, and wrinkles in the opening were hardly noticeable.

In Comparative Example 1, the entangled portions of the first fibers 2 are regularly formed in three continuous portions in the vertical and horizontal directions, and the fusion rate is low, so that the shape retention is low and the shape is formed into a spherical shape. The return to the mesh sheet shape afterwards became large, and it became a slightly flat shape. In Comparative Examples 2 and 3, since the fusion rate was too high, the resilience was low, and it was difficult to recover the shape when the sphere was recessed.

As described above, the mesh sheet 1 of the present invention easily obtains a desired curved shape when molded into a three-dimensional shape having a curved surface such as a sphere, and has shape retention and resilience (deformation recovery force). It has the effect of being able to. Further, even when a storage bag 10 such as a sphere, for example, a beverage extraction bag such as a sphere is molded by the mesh sheet 1 of the present invention, it can be molded into a bag having shape retention and resilience at the time of deformation. It works.
When the mesh sheet 1 of the present invention is used, in addition to the substantially spherical storage bag, a slightly flat spherical or elliptical tea bag having a shape restoring force even when deformed can be favorably used. It has the effect of being able to form.

1 ... Mesh sheet 1a ... Warp 1b ... Weft 2 ... First fiber 3 ... Second fiber 10 ... Storage bag

Claims (8)

A component having a structure of at least two layers of a first fiber composed of a single component and a core portion and a sheath portion covering the surface of the core portion, and having a melting point of a component forming the sheath portion forming the core portion. The warp and weft are formed by arranging the second fiber, which is 20 ° C. or more lower than the melting point of the first fiber or the melting point of the first fiber, whichever is lower.
Both the warp and the weft are provided with at least the second fiber, and the entangled portion between the second fiber constituting the warp and the second fiber constituting the weft is heat-sealed.
A mesh sheet for forming a curved surface in which the heat fusion rate of the entangled portion between the second fibers in the entire entangled portion of the warp and the weft is 10% or more and 45% or less. A component having a structure of at least two layers of a first fiber composed of a single component and a core portion and a sheath portion covering the surface of the core portion, and having a melting point of a component forming the sheath portion forming the core portion. The warp and weft are formed by arranging the second fiber, which is 20 ° C. or more lower than the melting point of the first fiber or the melting point of the first fiber, whichever is lower.
Both the warp and the weft are provided with at least the second fiber, and the entangled portion between the second fiber constituting the warp and the second fiber constituting the weft is heat-sealed.
A mesh sheet for forming a curved surface in which the number of the warp threads and the second fibers constituting the weft threads is 33% or more and 70% or less with respect to the total number of the first fibers and the second fibers. In the warp, every time one or two of the first fibers are arranged, one or two of the second fibers are arranged alternately.
The curved surface forming according to claim 1 or 2, wherein the weft has one or two second fibers arranged alternately every time one or two of the first fibers are arranged. Mesh sheet. In either the warp or the weft, the first fiber and the second fiber are alternately arranged in units of one or two in equal numbers.
The mesh sheet for forming a curved surface according to claim 1 or 2, wherein the warp and the other of the wefts are arranged with one of the second fibers for every three of the first fibers being arranged. Either one of the warp and the weft is composed of a second fiber.
The mesh sheet for forming a curved surface according to claim 1 or 2, wherein the warp and the other of the wefts are arranged with one of the second fibers for every three of the first fibers being arranged. The mesh sheet for forming a curved surface according to any one of claims 1 to 5, wherein the fiber densities of the warp and the weft are 70 or more and 120 or less per inch, respectively. The mesh sheet for forming a curved surface according to any one of claims 1 to 6, wherein the first fiber and the second fiber are monofilaments. The mesh sheet according to any one of claims 1 to 7 is provided.
A storage bag in which the mesh sheet is formed into a three-dimensional shape having a curved surface.

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