JPH0823796A - Netlike fibrous molded article and its production - Google Patents

Abstract

PURPOSE:To provide a light-weight netlike fibrous molded article useful for an agricultural net such as an insecticidal net, etc., having reinforced ends free from deviation of stitch, and which is connectable, and shows excellent see-through properties by forming a yarn bundle of a specific fineness comprising thermally fusible yarn. CONSTITUTION:A yarn bundle having 100-2,500 denier total fineness comprising thermally fusible yarn such as PE, thermally fusible conjugate monofilament or thermally fusible conjugate flat yarn having 100-2,500 denier fineness is woven or knitted in 3-40 yarns/25 mm density to form a net. A reinforcing material containing >=30wt.% of thermally fusible yarn is laminated to the ends of the net and the intersections of the yarn bundle are fused by heat treatment and the reinforcing material is thermally fused to the ends of the net to form reinforcing parts. The reinforcing parts are attached with a ring-shaped member such as a synthetic resin to provide the objective netlike fibrous molded article.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a net-like fiber molding used as an agricultural net such as a hail-proof net, a wind-proof net, an insect-proof net, or a protective net for construction. More specifically, the present invention relates to a connectable net-shaped fiber molded body in which an end portion of a net is reinforced and an annular member for passing a string or the like is fixed.

[0002]

2. Description of the Related Art Agricultural nets are made of synthetic fibers that can be used for a long period of time without discoloration or loss of strength. A net made of vinyl chloride resin or nylon monofilament is used as a binder. It is known that the product is attached with an aluminum ring or the like and is reinforced by sewn a polyethylene film or the like to its end. However, the manufacturing method of such a net is complicated, and a needle penetrates through the obtained net at the time of sewing, and the monofilament constituting the net is cut or damaged. Therefore,
There is also a problem that the reinforcing portion to which the annular member is attached also has low strength. Japanese Unexamined Patent Publication No. 1-268981 discloses a blind material in which the ends of a woven or knitted fabric in which the intersections of the heat-fusible composite monofilament are heat-sealed are reinforced. JP-A-60
No. 28547 discloses an insect repellent net in which the intersections of heat-fusible composite monofilaments are heat-sealed.
Further, Japanese Patent Application Laid-Open No. 5-14099 discloses a net in which two kinds of fibers having different melting points are woven and knitted and their intersections are heat-sealed. Each of the three nets mentioned above is characterized by no misalignment. However, the ends of these nets are not reinforced, and no annular member is attached to the ends. Therefore, when using this net as a wide net for agriculture or construction, it is necessary to pierce the texture with a string or the like and connect it, and the string threading part of the net due to the impact of wind pressure or various falling objects. There is a drawback that the texture is cut off and the edges are frayed during long-term use.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to form a net-shaped fiber molding which is free from misalignment, lightweight, reinforced at its ends, and provided with an annular member for passing a string or the like attached to the ends. To provide the body. Further, the end portion of the net is reinforced by a simple method of changing the weaving density or heat-bonding the reinforcing member, and a net-shaped fiber molded body in which the annular member is fixed by crimping or heat-sealing method. It is intended to provide a manufacturing method.

[0004]

The present invention has the following constitution in order to solve the above problems. (1) A fiber bundle having a total fineness of 100 to 2500 denier made of heat-fusible fibers is woven or knitted at a density of 3 to 40 fibers / 25 mm, and the intersection of the fiber bundles is at the end of the heat-sealed net. A net-like fiber molded article, comprising: a reinforcing portion formed by fusing a reinforcing material made of woven or non-woven fabric, and an annular member fixed to the reinforcing portion. (2) The net-like fiber molded article according to item (1), wherein the reinforcing material is a woven or non-woven fabric containing 30% by weight or more of the heat-fusible fiber of the net material. (3) The net-like fiber molding according to the above item (1) or (2), wherein the end portion of the net has a higher weave density (or knitting density) of the fiber bundle than other portions other than the end portion. body. (4) The net-like fiber molded body according to any one of the above items (1) to (3), wherein the annular member is a metal.

(5) The net-like fiber molded body according to any one of the above items (1) to (3), wherein the annular member is a synthetic resin. (6) The net-shaped fiber molded body according to any one of the above items (1) to (5), wherein the fixing of the annular member to the reinforcing portion is fixing by heat fusion. (7) In place of the fineness bundle, a heat-fusible composite monofilament or a heat-fusible composite flat yarn having a fineness of 100 to 2500 denier is used.
The net-like fiber molded article according to any one of (6). (8) A fiber bundle having a total fineness of 100 to 2,500 denier or a heat-fusible composite monofilament or a heat-fusible composite flat yarn having a fineness of 100 to 2,500 denier made of heat-fusible fibers. Weaving and knitting at a density of 40 fibers / 25 mm to form a net, and 30% by weight of heat-fusible fiber at the end of the net.
From the process of laminating the reinforcing material containing the above, heat-bonding the intersections of the fiber bundles by heat treatment and heat-bonding the end of the net and the reinforcing material to form the reinforcing portion, and further attaching the annular member to the reinforcing portion. And a method for producing a net-shaped fiber molded body.

(9) Total fineness 100 consisting of heat-fusible fibers
~ 2500 denier fiber bundle, or fineness 100 ~ 250
A heat-fusible composite monofilament or a heat-fusible composite flat yarn of 0 denier is woven or knitted at a density of 3 to 40 pieces / 25 mm to form a net, and the obtained net is heat-treated to form a fiber bundle. And the reinforcing material containing 30% by weight or more of the heat-fusible fiber is laminated on the end of the heat-treated net, and heat-treated again to heat-bond the end of the net and the reinforcing material. A method for producing a net-shaped fiber molded body, which comprises the steps of forming a reinforcing portion by attaching the annular member to the reinforcing portion. (10) When the net is woven or knitted, the end portion of the net is woven or knitted with a higher woven density (or knitting density) than other portions other than the end portion. Body manufacturing method. (11) The method for producing a net-like fiber molding according to the above (8) or (9), characterized in that, when the net is woven or knitted, the end portion is folded back to form a high density portion.

In the present invention, the fiber bundle for weaving the net is composed of heat-fusible fibers. Here, the heat fusible fiber is a composite fiber obtained by composite spinning of a plurality of thermoplastic resins having a melting point difference of 15 ° C. or more, or a mixed fiber of a plurality of thermoplastic resin fibers having a melting point difference of 15 ° C. or more. is there. The fiber bundle composed of heat-fusible fibers is equal to or higher than the melting point of the low melting point component of the composite fiber or the melting point of the low melting point fiber of the mixed fiber, and the melting point of the high melting point component of the composite fiber or the high melting point fiber of the mixed fiber. The heat treatment at a temperature equal to or lower than the melting point makes it possible to fuse the contact points of the fiber bundle while maintaining the fiber form, and heat treatment of the woven or knitted fabric using such a fiber bundle can prevent misalignment. In the present invention, a multilayer flat yarn or a composite monofilament made of a plurality of thermoplastic resins having a melting point difference of 15 ° C. or more can be used in place of the fiber bundle, and the same effect as in the case of the fiber bundle can be obtained by heat treatment. Is obtained.

When the difference in melting point of the thermoplastic resin constituting the heat-fusible fiber is less than 15 ° C., the high melting point component is softened or melted during the heat treatment, and the net is deformed into a film to give a texture. Inconveniences such as clogging and fusing of fibers are likely to occur, the strength of the net is lowered, and it becomes difficult to obtain a uniform net. From the viewpoint of ease of heat treatment, the melting point difference is 20.
It is preferably at least ° C. The proportion of the low melting point thermoplastic resin in these fiber bundles, multi-layer flat yarns or composite monofilaments is preferably 30 to 70% by weight. The ratio of low melting point thermoplastic resin is 30
If it is less than 10% by weight, the effect of preventing misalignment becomes insufficient,
If it exceeds 70% by weight, problems such as clogging of the texture and fusing of the fibers are likely to occur due to heat treatment.

Examples of the thermoplastic resin as a raw material for such heat-fusible fibers include various polyethylenes, polypropylenes, thermoplastic polyesters and polyamides.
As an example of a combination of a plurality of thermoplastic resins having a melting point difference of 15 ° C. or more, high density polyethylene / polypropylene,
Copolymer of propylene and 1 to 2 other α-olefins / polypropylene, low melting point polyester which is a copolymer of ethylene glycol and terephthalic acid / isophthalic acid / polyethylene glycol terephthalate, nylon 6
/ Nylon 66 etc. can be mentioned.

In the present invention, the above fiber bundle having a total fineness of 100 to 2500 denier is woven and knitted at a weaving density of 3 to 40 fibers / 25 mm to obtain a net. If the total fineness is less than 100 denier, the resulting net-like fiber molded article tends to have insufficient strength, and if it exceeds 2500 denier, the resulting net-like fiber molded article has too high rigidity and becomes difficult to handle.
Neither is preferred. In addition, weave density is 3 / 25m
If it is less than m, the resulting net-like fiber molded article tends to have insufficient strength, and if the weaving density exceeds 40 yarns / 25 mm, the net-like fiber molded article obtained has poor transparency and breathability and is used as an agricultural net. Or it is not practical as a protective net for construction.

A synthetic resin sheet, a natural fiber cloth, a synthetic fiber non-woven cloth, a web or the like can be used as the reinforcing material laminated on the net to form the reinforcing portion. When the reinforcing material is a woven or non-woven fabric containing 30% by weight or more of the above-mentioned heat-fusible fibers constituting the net, the net and the reinforcing material are strongly fused by the heat treatment described later, which is particularly preferable. This reinforcing material may be laminated not only on one side of the net but also on both sides.
Further, when the reinforcing material is a non-woven fabric or a web-like material, the net is fused so as to be embedded in the reinforcing material and thus is difficult to peel off, and the reinforcing effect is particularly large, which is preferable. Reinforcement width is 20
It may be -80 mm. If the width of the reinforcing material is less than 20 mm, the reinforcing effect tends to be insufficient, and if it exceeds 80 mm, a particularly preferable effect cannot be obtained. Lamination of the reinforcing material is not limited to both ends in the width direction of the net, but is perpendicular to the longitudinal direction of the net. By cutting the net at the reinforcing portions, the reinforcing portions can be formed at both ends in the longitudinal direction of the net. By making the fiber density of the reinforcing portion higher than that of other portions by about 30% or more, the fibers constituting the net can also serve as the reinforcing material. To increase the fiber density, there are methods such as weaving the warp yarns or weft yarns of the reinforcing portion to have a higher weaving density than other parts, or folding back the ends of the net.

Next, a net in which the above reinforcing material is laminated or a net in which the fiber density of the reinforcing portion is higher than that of the other portion is fused at the intersection of the fiber bundle and the net and the reinforcing material are heat fused. Heat treatment to form a reinforced portion. The heat treatment is performed at a temperature equal to or higher than the melting point of the low melting point component of the composite fiber or the melting point of the low melting point fiber of the mixed fiber and equal to or lower than the melting point of the high melting point component of the composite fiber or the melting point of the high melting point fiber of the mixed fiber. For the heat treatment, an apparatus such as a hot air dryer, an infrared heating dryer, a heating drum dryer, a heating roll, a heating pressure bonding roll, etc. can be used, and it can also be carried out by a hot pressing method or an ironing method. Prior to the lamination of the reinforcing material, only the net may be preheated to obtain a net in which the intersections of the fiber bundles are fused. The heat treatment in this case is performed under the same conditions as above. The net thus obtained can be stored without causing alteration such as misalignment because the intersections of the fiber bundles are fused, and the net production and the formation of the reinforcing portion can be carried out separately. .

An annular member for passing a cord or the like is fixed to the reinforcing portion of the net to which the above reinforcing material is heat-sealed. As the annular member, an eyelet made of a metal such as aluminum, iron or stainless steel, or an eyelet made of a thermoplastic resin such as a polyolefin resin, a vinyl acetate resin or a polyester resin can be used.
The inner diameter, outer diameter, outer shape, etc. of the annular member are not particularly limited,
The shape of the holes may be circular, square, triangular or the like. The method of fixing the annular member to the net differs depending on the material, but a pressure punching method can be used for metal eyelets, and a heat pressing punching method can be used for thermoplastic resin eyelets. The annular member may be fixed to only one side of the net,
It may be fixed from both sides of the net. When an annular member made of thermoplastic resin is fixed to a net by a heat fusion method, the annular member, the reinforcing material, and the net are all integrated by fusion, so that the strength of the attaching portion of the annular member is very high. . The net-like fiber molded product of the present invention may be added or coated with various additives such as a colorant, a light-proofing agent, a flame retardant, an antibacterial agent, and a pest repellent depending on its use.

[0014]

EXAMPLES The present invention will be described in detail below with reference to examples. In the following examples, the net was evaluated by the following method. * Fray resistance of the end portion: A sample piece having a width of 5 cm and a reinforcing portion of 20 cm is cut out from a net-shaped fiber molded body to which an annular member is fixed. Rub for 5 minutes with both hands. It was determined that there was no fray at the end (good) and there was fray at the end (bad). * Strength of the end to which the annular member is fixed: A sample piece having a width of 5 cm and a length of 8 cm is cut so that the annular member becomes the center. A metal hook is passed through the hole of the annular member, and the metal hook and the unreinforced net portion are grasped by the chuck of a tensile strength tester, and the breaking strength (kg / kg / min.
5 cm) was calculated.

Examples 1 to 3 Ethylene propylene butene-1 copolymer having a melting point of 138 ° C. as a sheath component and polypropylene having a melting point of 171 ° C. as a core component, a composite ratio of 50: 50% by weight, and a fineness of 300 d / f.
Using a sheath-core type composite monofilament, the weaving density was variously changed to weave a net having a width of 3 m and a length of 60 m. Immediately after weaving, using a hot roll type heater, the net was brought into contact with about 1/2 of the circumference of the roll and heated at a temperature of 148 ° C. to obtain a net in which the intersections of monofilaments were fused. It was rolled up.

The same polymer as the sheath component and the core component of the above composite monofilament is used for the sheath component and the core component, the compounding ratio is 50: 50% by weight, the fineness is 5 d / f, and the fiber length is 64 m.
m of the composite fiber staple was used as a card web and further heat-treated at a temperature of 145 ° C. using a hot air circulation type heater to obtain a heat-bonded nonwoven fabric having a basis weight of 40 g / m ² . This non-woven fabric has a width of 3
A non-woven fabric for a reinforcing material was slit by 5 mm and was rolled into a roll shape.

The roll-shaped net and the reinforcing material are fed out, the reinforcing material is laminated on both end portions in the width direction of the net, and heat-treated using a thermocompression-bonding roller at a temperature of 140 ° C. A reinforcing net having a non-woven fabric reinforcing material fused at the end was obtained. This reinforcing net was strongly fused with the net buried in the reinforcing material, and the reinforcing material and the net could not be separated by hand.

An annular member made of vinyl acetate having an outer diameter of 21 mm, an inner diameter of 11 mm, an inner edge thickness of 3 mm, and an outer edge thickness of 1.2 mm is provided on each side of both reinforcing portions of the reinforcing net.
The pieces were placed at 0 cm intervals and thermocompression-bonded using a thermocompression-type eyelet processing machine at a temperature of 135 ° C. to obtain an agricultural anti-frost net with a width of 3 m and a length of 60 m. This annular member was slightly crushed and had an outer diameter of 23 mm, which strongly adhered to both the net and the reinforcing material by heat and could not be peeled off by hand.

In place of the vinyl acetate annular member, the aluminum member is made of aluminum and has a thickness of 0.2 mm and an outer diameter of 16 mm.
The annular member is of a type in which the reinforcing portion is sandwiched and fixed between the two members by a pressure bonding type eyeletting machine, and the annular member is fixed at 40 cm intervals with a width of 3 m.
A 60 m long anti-frost net for agriculture was obtained. This annular member had an inner diameter of 7 mm, an outer diameter of 16 mm, and a hole edge height of 2 mm after pressure bonding.

Comparative Examples 1 to 3 In the same manner as in Examples 1 to 3, except that a non-woven fabric for a reinforcing material was not used and a net in which the intersections of monofilaments were simply fused was used instead of the reinforcing net. A net-shaped fiber molded body to which a vinyl acetate annular member was fixed and a net-shaped fiber molded body to which an aluminum cyclic member was fixed were obtained.

Table 1 shows various performances of the net-like fiber moldings obtained in Examples 1 to 3 and Comparative Examples 1 to 3. From Table 1,
It can be seen that the net-shaped fiber molded body of the present invention in which the reinforcing material is heat-sealed does not have its ends frayed and the annular member has a high tensile strength. As for the tensile strength of the annular member portion, the one obtained by heat-sealing the annular member made of vinyl acetate had a greater tensile strength than the one obtained by fixing the annular member made of aluminum by pressure bonding.

[0022]

[Table 1]

Example 4 Using a composite monofilament having a sheath component of polypropylene having a melting point of 168 ° C., a core component of polyethylene terephthalate having a melting point of 254 ° C., a composite ratio of 50: 50% by weight, and a fineness of 400 d / f, The warp density is 40 mm at each end in the width direction, the width is 70 threads / 25 mm, the central portion is 23 threads / 25 mm, the weft density is 23 threads / 25 mm, the width is 3 m, and the length is 60 m.
The net was woven. Immediately after weaving, the hot roll type heater used in Example 1 was used to heat at a temperature of 148 ° C. to form a net in which the intersections of the monofilaments were fused, and this net was rolled up. Aluminum annular members were fixed at 40 cm intervals to the 40 mm wide reinforced portions at both ends of the net in the same manner as in Example 1 to obtain an agricultural insect repellent net.
This net-like fiber molded product had a good resistance to fraying, and the tensile strength of the annular member was 16.3 kg / 5 cm.

Comparative Example 4 The same composite monofilament as that used in Example 4 was used, except that the density of both warp and weft was 23 threads / 25 mm.
An agricultural insect repellent net fixed at 0 cm intervals was obtained. This net-shaped fiber molded body had no reinforcing portion formed at the end, was poor in fraying resistance, and had a tensile strength of 6.5 kg / 5 cm of the annular member, which was excellent in comparison with Example 4. It was bad.

Example 5 The net-like fiber molded body having the reinforcing material and the vinyl acetate annular member obtained in Example 3 was cut into a length of 3.5 m and a width of 3 m.
A sheet having a length of m and a length of 3.5 m was obtained. The same reinforcing material as that used in Example 1 was laminated on both ends in the longitudinal direction of this sheet, and thermocompression bonded with an iron at 150 ° C. to obtain a new reinforcing portion. Furthermore, in this new reinforcing portion,
Similarly, a vinyl acetate annular member was thermocompression bonded by using a thermocompression-type eyelet processing machine to obtain a work net having a width of 3 m, a length of 3.5 m, and an interval of 40 cm between the annular members. In the reinforcing portion of this construction net, the net was buried in the reinforcing material and heat-sealed, the fraying resistance was good, and the tensile strength of the annular member was 21.5 kg / 5 cm.

Comparative Example 5 A polyethylene film having a thickness of 80 μm and a width of 90 mm was used as a reinforcing material. Both sides of the net used in Comparative Example 2 were covered with a reinforcing material having a width of 45 mm so as to wrap both ends in the width direction, and 8 mm and 37 mm from the ends were sewn with a sewing machine to form a reinforcing part. An aluminum annular member was pressure-bonded to the reinforcing portion in the same manner as in Example 1 to obtain an agricultural anti-frost net having a width of 3 m and a length of 60 m, to which the annular member was fixed at 40 cm intervals. This net-shaped molded product had good raveling resistance, and the tensile strength of the annular member was 7.9 kg / 5 cm. In this molded product, the strength of the annular member was slightly increased as compared with Comparative Example 2 in which no reinforcing material was used, but the net structure was common and the strength was inferior to that in Example 2 in which a non-woven fabric was used as a reinforcing material. It was. In this net-shaped molded body, the composite monofilament of the reinforcing portion was damaged in some places due to the penetration of the sewing machine needle, and the reinforcing material was easily peeled off by hand.

Example 6 A three-layer flat tire having a fineness of 880 denier and comprising a first layer and a third layer made of high-density polyethylene having a melting point of 133 ° C. and a second layer made of polypropylene having a melting point of 169 ° C. The sheet having a weave density of 6/25 mm was woven together with the warp and weft, and heated at a temperature of 139 ° C. using the hot roll type heater used in Example 1 to fuse the intersections of the fibers. A net-like sheet having a width of 3 m was obtained, and this was wound into a roll. The reinforcing material used in Example 1 was laminated on both ends of this sheet in the width direction, and heat-treated at a temperature of 145 ° C. using the thermocompression-bonding roll used in Example 1 to fuse the net and the reinforcing material. I got a reinforcement net. This reinforcing net was strongly heat-sealed with the net buried in the reinforcing material, and the reinforcing material and the net could not be separated by hand. A vinyl acetate annular member was thermocompression bonded to the reinforcing portion of the reinforcing net in the same manner as in Example 1 to obtain an agricultural light-shielding net having a width of 3 m and a length of 30 m. The reinforcing portion of the net-like fiber molded body has a good anti-raveling property, and the tensile strength of the annular member portion is 14.1 k.
It was g / 5 cm.

Comparative Example 6 A vinyl acetate annular member was directly laminated in the same manner as in Example 1 without laminating reinforcing material on both ends in the width direction of the net-like sheet having a width of 3 m used in Example 6. The net-like fiber molded body obtained by thermocompression bonding had poor raveling resistance at the ends and the tensile strength of the annular member was 8.7 kg / 5 cm.

[0029]

EFFECTS OF THE INVENTION The net-like fiber molding of the present invention has a structure in which the intersections of the nets are heat-sealed, and the end portions of the nets are reinforced by heat-sealing and the annular member is fixed. Since it is lightweight, the net is not misaligned and the strength of the annular member is great. Therefore, even if the weight is suspended by a string in the hole of the annular member or the nets are connected by the string using the hole of the annular member, the net is not broken near the annular member and can be used for a long time.

Further, the net-like fiber molded body which is made into a reinforcing portion by increasing the fiber density at the end portion of the net does not need to prepare a reinforcing material, and the manufacturing method is simple. The reinforcing portion obtained by heat-sealing the sheet-shaped reinforcing material containing heat-fusible or low-melting-point fibers is heat-sealed so that the net is embedded in the reinforcing material, so that the fraying of the reinforcing portion There is an effect that there is no peeling and the strength of the annular member fixing portion is high.

According to the present invention, the heat-fusible fiber is woven or knitted into a net, and a reinforcing material containing the heat-fusible fiber is laminated on the end portion of the net, and heat treatment is performed to obtain the intersections of the net and the net and the reinforcing material. According to the method for producing a net-shaped fiber molded body, which comprises the step of heat-sealing and further fixing the annular member to the reinforcing portion,
Since it is not necessary to sew the reinforcing material, the manufacturing method is simple, and there is no damage to the net due to needle penetration during sewing. Further, according to the manufacturing method of the present invention in which the step of reinforcing by the reinforcing material is performed by the heat fusion method, the step of reinforcing can be performed by a method such as ironing, so that the net having the reinforcing portion of any shape and size can be used. The shaped fiber molded body can be easily manufactured.

Claims (11)

[Claims] 1. A total fineness of 100 to 2 comprising heat-fusible fibers.
A fiber bundle of 500 denier was woven and knitted at a density of 3 to 40 fibers / 25 mm, and a reinforcing material made of a woven or non-woven fabric was fused to the end of the net where the intersection of the fiber bundle was heat fused. A net-shaped fiber molded body, wherein a reinforcing portion is formed, and an annular member is fixed to the reinforcing portion. 2. The net-shaped fiber molding according to claim 1, wherein the reinforcing material is a woven or non-woven fabric containing 30% by weight or more of the heat-fusible fiber which is a material of the net. 3. The net-shaped fiber molded product according to claim 1, wherein the end portion of the net has a higher weave density (or knitting density) of the fiber bundle than the other portions other than the end portion. 4. The net-shaped fiber molding according to claim 1, wherein the annular member is made of metal. 5. The net-like fiber molding according to claim 1, wherein the annular member is made of synthetic resin. 6. The reinforcing member and the annular member are fixed to the net by heat fusion.
The net-like fiber molded article described in any one of 1. 7. A fineness of 100 to 2500 in place of the fiber bundle.
A heat-fusible composite monofilament or a heat-fusible composite flat yarn of denier is used.
The net-like fiber molded body according to any one of 1 to 6. 8. A total fineness of 100 to 2 composed of heat-fusible fibers.
A fiber bundle of 500 denier or a heat fusible composite monofilament or a heat fusible composite flat yarn having a fineness of 100 to 2500 denier is knitted at a density of 3 to 40 fibers / 25 mm to form a net. Then, apply 3 heat-fusible fibers to the end of the net.
A reinforcing material containing 0% by weight or more is laminated, heat treatment is performed to fuse the intersections of the fiber bundles, and the end portion of the net and the reinforcing material are heat-fused to form a reinforcing portion. A method for producing a net-shaped fiber molded body, which comprises a step of attaching. 9. A total fineness of 100 to 2 composed of heat-fusible fibers.
A fiber bundle of 500 denier or a heat fusible composite monofilament or a heat fusible composite flat yarn having a fineness of 100 to 2500 denier is knitted at a density of 3 to 40 fibers / 25 mm to form a net. Then, the obtained net is heat-treated to fuse the intersections of the fiber bundles in advance, and then a reinforcing material containing 30% by weight or more of the heat-fusible fiber is laminated on the end of the heat-treated net and heat-treated again. A method for producing a net-shaped fiber molded body, comprising the steps of heat-sealing an end portion of a net and a reinforcing material to form a reinforcing portion, and then attaching an annular member to the reinforcing portion. 10. The net shape according to claim 8 or 9, wherein when the net is woven or knitted, the end of the net is woven or knitted with a higher woven density (or knitting density) than other parts other than the end. A method for producing a fiber molded body. 11. The method for producing a net-like fiber molding according to claim 8, wherein when the net is woven or knitted, the end portion is folded back to form a high density portion.