JP4962342B2 - Synthetic fiber nonwoven fabric production method and cloth-like and / or cotton-like fiber separation device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a method for producing a synthetic fiber nonwoven fabric using cloth-like fiber products and / or cotton-like fiber products as raw materials, and a fiber product separation apparatus used therefor, and in particular, disposal of cloth-like fibers comprising clothes, curtains, and the like. The present invention relates to a method for producing a synthetic fiber nonwoven fabric for efficiently producing a synthetic fiber nonwoven fabric having a high added value from a product, and a separation device for separating cloth-like and / or cotton-like fibers used at that time by material.

  In general, some fiber wastes composed of clothes, curtains, cotton, etc. are composed of a plurality of materials, and many are discharged as a mixture of various fiber materials. When trying to recycle fiber waste mixed with these various fiber materials, clothing and clothing are sorted by looking at the material label, or the texture and feel of the fibers, smell during combustion, etc. The materials that do not match the intended use are sorted and recycled. However, depending on the type of fiber waste, since various various materials are mixed, it cannot be sufficiently separated. In some cases, the non-woven fabric is not recycled and discarded because of its low value and economic incompatibility.

  Among textile wastes, fabric curtains are made of polyester fibers, acrylic fibers, synthetic fibers mainly composed of acrylic fibers, and these synthetic fibers are blended with cellulose-containing fibers such as rayon and cotton. Various types are known, such as those treated with flame retardant. In the curling of these curtain wastes, it is necessary to work to cut and cut to an appropriate size in advance, and it is time-consuming. For filaments such as polyester fibers, select a special opening machine or method. If the fiber is not opened, good bristles cannot be obtained. Therefore, there is a problem that the efficiency of processing into a non-woven fabric does not increase.

  Therefore, for curtain waste mixed with various materials, if the material composed of a single material or a certain proportion of materials can be separated and accumulated, the conditions for processing into a non-woven fabric can be easily controlled, and the product value is also increased. It is possible.

  As a device for identifying the type of plastic, a plastic identifying machine including a near-infrared spectrophotometer is known (see, for example, Patent Document 1). For an apparatus comprising a near-infrared spectrophotometer for identifying the type of plastic, for example, ABS resin, acrylonitrile styrene, polyamide, polybutylene terephthalate, polycarbonate, polycarbonate ABS, polyethylene, polyethylene terephthalate, acrylic resin (polymethyl methacrylate resin) ), A plastic type discriminator for identifying 15 types of plastics consisting of polyacetal, polypropylene, polystyrene, polyurethane, vinyl chloride resin, and polyvinylidene chloride is marketed and sold.

  As shown in Patent Document 1, the principle of the apparatus for identifying the type of plastic is that a reference absorption spectrum obtained by irradiating a plastic molded body with near infrared light and detecting the reflected or transmitted light by a predetermined spectroscopic means is used. This is a near-infrared spectrophotometer to be displayed on a computer display, and is a device for identifying the type of plastic by comparing this spectrum with spectrum data of a standard plastic that has been learned in advance. Such an apparatus for identifying the type of plastic is used and used for identifying the type of plastic in the recycling field such as home appliance recycling, container packaging recycling, and automobile recycling.

However, there has been no case that has been studied so far regarding a method of using an apparatus for identifying the type of plastic in order to sort fibers mixed with various fiber materials.
JP 2006-84350 A

  The present invention is a composition for efficiently producing a synthetic nonwoven fabric suitable as a civil engineering material or a flame-retardant material from cloth-like and / or cotton-like fibers mixed with various materials, for example, textile waste such as curtain waste. The present invention provides a method for manufacturing a fiber nonwoven fabric and a sorting device for identifying and collecting the fiber material used therefor.

  As a result of intensive studies in order to solve the above-mentioned problems, the present inventor has determined that durability and flame retardancy from cloth waste and / or cotton-like fibers mixed with various materials, for example, fiber waste such as curtain waste, etc. By efficiently identifying cellulose-containing fibers such as cotton or rayon, which are inferior in properties, and separating them into anti-hairs, it is possible to efficiently produce synthetic fiber nonwoven fabrics suitable as civil engineering materials and flame retardant materials as high-value-added synthetic fiber nonwoven fabrics. The idea of being able to do so was obtained and the present invention was completed.

That is, the present invention
(1) A method for producing a synthetic fiber nonwoven fabric, in which cloth-like and / or cotton-like fibers as raw materials are composed of the cloth-like and / or cotton-like fibers by a near-infrared spectrophotometer. In the material identifying step, and in the material identifying step, a cloth-like fiber (hereinafter also referred to as cellulosic cloth-like fiber) or cotton-like fiber identified as containing 10% by weight or more of cellulose-containing fibers is selected, Cellulose exclusion step to be removed from the raw material, a repulsion step in which cloth-like and / or cotton-like fibers other than the excluded cellulosic cloth-like fibers and cotton-like fibers are used as a bristles, and A method of manufacturing a synthetic fiber nonwoven fabric, comprising:
(2) The method for producing a synthetic fiber nonwoven fabric according to (1), wherein the cloth-like and / or cotton-like fibers are fiber waste, and the synthetic fiber nonwoven fabric to be produced is a recycled synthetic fiber nonwoven fabric,
(3) The method for producing a synthetic fiber nonwoven fabric according to (1) or (2), wherein the cloth fiber is a curtain,
(4) The method for producing a synthetic fiber nonwoven fabric according to any one of (1) to (3), wherein the cellulose-containing fiber is a fiber containing 10% by weight or more of cotton or rayon,
(5) In the material selection step, the fabric identified in the material identification step as containing at least 30% by weight of acrylic fiber from cloth-like and / or cotton-like fibers as a raw material by a near infrared spectrophotometer Fiber-like fibers (hereinafter also referred to as “acrylic cloth-like fibers”) and / or cotton-like fibers, and the selected acrylic cloth-like and / or cotton-like fibers are collected and rebounded in the rebounding step. And the manufacturing method of the synthetic fiber nonwoven fabric in any one of said (1)-(4) which processes the said bristles into a nonwoven fabric in the said nonwoven fabric processing process, and makes it a flame-retardant nonwoven fabric,
(6) Cloth-like and / or cotton-like fiber separation device for detecting cloth-like and / or cotton-like fiber feeding device and cloth-like and / or cotton-like fiber feeding status A position sensor, a conveying device that intermittently conveys the supplied cloth-like and / or cotton-like fibers, and the cloth-like and / or cotton-like fibers conveyed by the conveying device are irradiated with near infrared light. A detector for detecting the reflected light, a position sensor for detecting the conveyance state of the cloth-like and / or cotton-like fibers at the position of the detector, and the cloth based on the identification data of the detector And / or cotton-like fibers for each fiber material, and 2 to 4 sorter storage units installed at the rear of the sorter. / Or cotton-like fiber sorting device,
(7) The supply device is a device that supplies cloth-like and / or cotton-like fibers from the upper part of the transport device and hooks and pulls up the cloth-like and / or cotton-like fibers in a path inclined upward. The cloth-like and / or cotton-like fiber separation device according to (6) above,
(8) In the above (6) or (7), the sorting machine changes the transport path based on the identification data of the cloth-like and / or cotton-like fibers and puts it into the sorted product storage unit. The cloth-like and / or cotton-like fiber separation device as described,
(9) Any of the above (6) to (8), wherein the cloth-like and / or cotton-like fibers are fiber waste and are used for separation of cloth-like fiber waste and / or cotton-like fiber waste. Sorting device according to
(10) Cellulosic cloth-like and / or cotton-like fibers containing 10% by weight or more of cellulose-containing fibers, acrylic cloth-like and / or cotton-like fibers containing 30% by weight or more of acrylic fibers, and other The above-mentioned (6) to (6), wherein the cloth-like and / or cotton-like fibers made of synthetic fibers and the cloth-like and / or cotton-like fibers made of indistinguishable fibers are discriminated, sorted and collected. 9) The cloth-like and / or cotton-like fiber separation device according to any one of
It is.

  In producing a synthetic fiber nonwoven fabric, the weight of the cellulose-containing fiber is identified by identifying the type of material constituting the cloth-like and / or cotton-like fibers with a near-infrared spectrophotometer. After selecting and removing cellulosic cloth-like fibers and cotton-like fibers containing at least 50%, the fiber material of the remaining cloth-like fibers and cotton-like fibers is made into a bristles, and the bristles are processed into a non-woven fabric for recycling. A nonwoven fabric with a low content of contained fibers can be obtained, and for example, cloth-like fibers and cotton-like fibers can be recycled as water-permeable sheets for waste landfills and the like. Further, if the cloth-like fibers and / or cotton-like fibers are fiber waste and the synthetic fiber nonwoven fabric to be produced is a recycled synthetic fiber nonwoven fabric, the fiber waste can be recycled.

  If the cloth-like fiber is a curtain, the constituent material of the curtain is mostly polyester fiber, acrylic fiber, synthetic fiber mainly composed of acrylic fiber, and cellulose such as rayon and cotton blended with these synthetic fibers. By specifying and separating fibers containing 10% by weight or more, a synthetic fiber nonwoven fabric having a low content of cellulose-containing fibers such as rayon and cotton can be obtained. The non-woven fabric produced in this way is composed of synthetic fibers from which fibers containing 10% by weight or more of cellulose-containing fibers have been selected and removed. For example, when used as a civil engineering material, It is preferable because it is difficult to decompose due to the like and can be used effectively.

  Moreover, if the said cellulose containing fiber is a fiber containing 10 weight% or more of cotton or rayon, it can identify easily that it is a cellulose containing fiber with a near-infrared spectrophotometer.

  Further, if the cloth-like fiber or cotton-like fiber selected and collected by the near-infrared spectrophotometer is an acrylic cloth-like fiber or cotton-like fiber containing 30% by weight or more of the acrylic fiber, it is identified. Since the recovered fiber waste has flame retardancy, it is possible to impart flame retardancy by separating the fiber containing 30% by weight or more of acrylic fiber, and then processing the nonwoven fabric using the opened and repelled repellent. Since the obtained non-woven fabric is easy to obtain, it can be recycled as a non-woven fabric with higher added value.

  Further, in manufacturing the synthetic fiber nonwoven fabric, a supply device for cloth-like fibers and cotton-like fibers such as fiber waste, and a position sensor for detecting the supply status of the cloth-like fibers and cotton-like fibers were supplied. A conveying device that intermittently conveys cloth-like fibers and cotton-like fibers, and a detector for detecting reflected light by irradiating near-infrared light to the cloth-like fibers and cotton-like fibers conveyed by the conveying device; , A position sensor for detecting the conveyance state of the cloth-like fiber and cotton-like fiber at the position of the detector, and the cloth-like fiber and cotton-like fiber are separated for each fiber material based on the identification data in the detector By using a sorting device for cloth-like fiber waste and cotton-like fiber waste comprising a sorter that performs and 2 to 4 sorter storage units installed at the rear of the sorter, a cloth-like form such as curtain waste 10% by weight of cellulose-containing fiber from fiber raw materials The fibers comprising the above efficiently, and can be sorted automatically processed.

  The supply device supplies cloth-like fibers and cotton-like fibers from the upper part of the conveying device, and in a path inclined upward, the cloth-like fibers and cotton-like fibers are hooked up and pulled up, It is possible to supply cotton-like fibers one by one (one lump), and this allows multiple types of cloth-like fibers and cotton-like fibers identified in the detection unit to be mixed and in a folded state. As a result of the identification, the identification accuracy of the recovered cloth-like fiber or cotton-like fiber is improved, and as a result, the separation process can be performed with high accuracy.

  In addition, the sorting device changes the transport path based on the identification data of the cloth-like fibers and cotton-like fibers, and puts them into the sorted-item storage unit, so that the cloth-like fibers and cotton-like fibers sorted according to the material are collected. , Each can be recovered efficiently.

  Furthermore, according to the present sorting apparatus, the fiber material is classified into fibers containing 10% by weight or more of cellulose-containing fibers, fibers containing 30% by weight or more of acrylic fibers, other synthetic fibers, and indistinguishable fibers. By controlling the sorting machine based on the identification data, the cloth-like fiber waste and the cotton-like fiber waste can be separated and collected into the above-mentioned 2 to 4 types of materials, thereby adding value. The raw material for producing a high synthetic fiber nonwoven fabric can be separated and recovered.

  The method for producing a synthetic fiber nonwoven fabric according to the present invention uses a near-infrared spectrophotometer to identify the type of fabric material such as clothes and curtains and fiber materials such as cotton, and cellulose or cotton made of rayon or the like. Synthetic fibers that specify fibers containing 10% by weight or more of the contained fibers, and separate and remove them from the raw materials, and classify them for each material constituting the fibers, and make the separated fibers anti-haired to make synthetic fiber nonwoven fabrics. It is a manufacturing method. In addition, the fiber in this invention does not include the paper products which consist of used papers, such as paper and a pulp, but targets a cloth-like fiber, a cotton-like fiber, and those waste among fiber products.

  When identifying the material constituting the cloth-like fiber or cotton-like fiber, it is preferable to use a plastic discriminator comprising a near-infrared spectrophotometer. The wavelength region of near infrared light used in the near infrared spectrophotometer is in the range of 1300 to 2600 nm. When identifying the type of plastic, 1600 to 2400 nm is usually used, and cloth-like fibers and cotton are used. It is preferable to use near-infrared light in this wavelength region also for identifying the material of the fiber. When performing measurement for identifying the material of cloth-like fiber or cotton-like fiber, it is performed by setting the number of measurements, the number of scans, and the number of measurement points in the wavelength region. Usually, the identification time is about 2 seconds per measurement. It is measured by. When identifying materials using near-infrared light, it is difficult to identify black or dark materials because the near-infrared reflected light is not absorbed by the material. Gara can be easily identified. When identifying the constituent material of cloth-like fibers and cotton-like fibers with a near-infrared spectrophotometer, the shape of the fiber waste may be any of cotton-like, cloth-like, or thread-like, It is preferable that it is a cloth-like fiber from the point of separating after identifying a constituent material. In addition, when selecting a fiber material with a near-infrared spectrophotometer, a material inserted in a thin polyethylene bag, with a single material inserted, such as a curtain fabric Since it is possible to select the fiber material in the bag without unpacking the polyethylene bag, it is possible to save the trouble of removing the bag and selecting it.

  Of the fabric-like fibers, many of the curtains use polyester fibers, and when examining the materials of product samples from some curtain manufacturers, the polyester fibers alone What is composed accounts for 50% or more. However, the curtain material is composed of warp and weft yarns made of different materials, mixed with different materials, and used for texture, washing durability, shading, flame resistance, etc. The thing which provided functionality is also mentioned. Specifically, fibers such as acrylic fibers, acrylic fibers, rayon, and cotton are mixed and woven in various proportions with polyester fibers. Also, among the curtains, if the lace curtain is identified with a near-infrared spectrophotometer, if the near-infrared light is transmitted through the material and the reflected light is difficult to collect, a plurality of lace curtains should be used. If it is laminated to easily collect the reflected light, it can be easily identified.

  These polyester fibers blended with fibers such as acrylic fibers, acrylic fibers, rayon, and cotton are different from polyester fibers as long as they are blended with polyester fibers at a blending rate of 10% by weight or more. Since the peak can be detected, identification is possible. Furthermore, those having a blending ratio of 20% by weight or more are preferable because they can be easily identified.

  The cellulose-containing fiber in the present invention is a spun yarn mainly made of rayon, cotton or the like. Furthermore, natural fibers made of hemp, silk, wool, etc. can be similarly classified using the method for identifying cellulose-containing fibers with a near infrared spectrophotometer according to the present invention. In the present invention, raw materials such as cloth fibers and cotton fibers recovered by selecting and removing fibers containing 10% by weight or more of cellulose-containing fibers having inferior durability and flame retardancy from cloth fibers and cotton fibers. Since the fiber is composed of a synthetic fiber having excellent durability, it is useful and preferable for producing and reusing a nonwoven fabric.

  The polyester fiber in the present invention is terephthalic acid, isophthalic acid, naphthalene-2, 6-dicarboxylic acid, phthalic acid, α, β- (4-carboxyphenoxy) ethane, 4,4′-dicarboxydiphenyl, 5- Aromatic dicarboxylic acids such as sodium sulfoisophthalic acid; aliphatic dicarboxylic acids such as azelaic acid, adipic acid and sebacic acid and ethylene glycol, diethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexane Examples thereof include fiber-forming polyesters composed of diols such as diol, neopentyl glycol, cyclohexane-1,4-dimethanol, polyethylene glycol, and polytetramethylene glycol. More than 80 mol% of the structural units are ethylene terephthalate units. Prefer to be That's right. In addition, a flame-retardant polyester, phosphorus-containing flame retardant or bromine-containing flame retardant obtained by polycondensation of a phosphorus-containing ester-forming compound such as a phosphate having a carboxyl group or a hydroxyl group as a reactive functional group at the terminal with the polyester-forming monomer It is also possible to use polyester-based flame retardant fibers obtained by introducing or imparting the above by mixing molding, post-processing or the like.

  Next, the acrylic fiber in the present invention is a fiber formed by using a copolymer containing less than 85% by weight of acrylonitrile monomer, specifically, 30 to 70% by weight of acrylonitrile, vinyl chloride monomer and / or chloride. This is a copolymer fiber comprising 70 to 30% by weight of a halogen-containing vinyl monomer such as vinylidene monomer and 0 to 10% by weight of a vinyl monomer copolymerizable therewith. Furthermore, from the viewpoint of imparting flame retardancy, the copolymer is composed of 40 to 60% by weight of acrylonitrile, 60 to 40% by weight of a halogen-containing vinyl monomer such as vinyl chloride monomer and / or vinylidene chloride monomer, and A copolymer fiber composed of 0 to 10% by weight of a vinyl monomer copolymerizable therewith is preferred. On the other hand, a general acrylic fiber is a fiber using a copolymer containing 85% by weight or more of acrylonitrile as a monomer unit and is classified as an acrylic fiber.

  FIGS. 1 to 4 show analysis of cloth-like fibers composed of 100% by weight of cotton, 100% by weight of polyester fiber, 100% by weight of acrylic fiber, and 100% by weight of acrylic fiber, respectively, using an infrared spectrophotometer. FIG. 5 to FIG. 7 show the results of 69% by weight, 70% by weight, and 55% by weight of polyester fiber, 31% by weight of rayon, 30% by weight of acrylic fiber, and 45% by weight of acrylic fiber, respectively. The result of having analyzed the blended cloth-like fiber is shown.

  In these analysis results, when cellulose-containing fibers made of rayon, cotton or the like are analyzed by a near infrared spectrophotometer, they are broad in the wavelength range of 1924 to 1974 nm (1937, 1946 nm) and 2084 to 2163 nm (2124 nm). This is preferable because a cellulose-containing fiber can be easily identified by detecting this peak. Furthermore, when measuring the above-mentioned polyester fiber, acrylic fiber, acrylic fiber, rayon, and cotton with a near infrared spectrophotometer, each has a characteristic peak. It is possible to identify each material.

  On the other hand, for cloth-like fibers made of polyester fibers, acrylic fibers, and acrylic fibers, the results of analysis using a near-infrared spectrophotometer produce characteristic peaks for each type of material. It becomes effective. Here, characteristic peaks for identifying each material when a polyester-based fiber, an acrylic fiber, an acrylic fiber, and a cellulose-containing fiber made of rayon or cotton are analyzed with a near-infrared spectrophotometer are shown in Table 1. Shown in The cloth-like fiber containing the polyester fiber is easily identified because three characteristic peaks inherent to the polyester fiber occur at 2155, 2183, and 2208 nm. Acrylic fibers have characteristic peaks at 1690, 1743 and 2302 nm, and acrylic fibers have characteristic peaks at 1701, 1746, 2325 and 2381 nm. As other peaks, for example, a peak generated in the vicinity of 1920 nm occurs in the polyester fiber, acrylic fiber, and acrylic fiber, but is identified more accurately based on the peak pattern in combination with the characteristic peak. It becomes possible. In this way, when fibers containing 10% by weight or more of cellulose-containing fibers, acrylic fibers, and acrylic fibers are identified and classified, and the presence or absence of polyester fibers is clarified by the above-mentioned near infrared spectroscopy, The content of the polyester fiber in the fiber remaining in the fiber will exceed at least 50% by weight.

  In general, in a device for identifying plastics with a near-infrared spectrophotometer, a near-infrared spectrophotometer and a computer are connected, and the obtained near-infrared light absorbance data is loaded into the computer and stored in advance. Machines that identify and identify plastic species by comparing and calculating near-infrared light absorbance patterns for each plastic species are commercially available.

  By the way, since many fiber products using acrylic fibers, especially curtains, are usually used at a blending ratio of 40% by weight or more, identification with a near-infrared spectrometer can be easily performed. . Moreover, since most of the curtains containing acrylic fibers are flameproof products, the fibers collected after being separated after identification also have good flame retardancy. Furthermore, since the resin itself constituting the acrylic fiber has flame retardancy, the polyester fiber processed after the flame retardancy is characterized in that the flame retardancy performance is hardly lowered due to deterioration over time.

  FIG. 8 is a schematic explanatory diagram showing an example of a specific form of the configuration of the sorting apparatus 1 that sorts various cloth-like fiber wastes for each fiber material. In this sorting apparatus 1, raw fibers 2 such as cloth-like fibers (waste) or cotton-like fibers are hooked and pulled up by a feeding device 6 such as a belt conveyor provided with a large number of hooks 6 a, for example, above the conveying device 3. It is transported, dropped and supplied. At this time, the position sensor 5c detects that the raw material fiber 2 has been supplied to the conveying device 3, and the supply device 6 is brought into a stopped state. And the conveyance apparatus 3 is driven and the raw material fiber 2 is conveyed to the detector 4. FIG. Next, when the raw material fibers 2 are conveyed to the position sensor 5b of the conveying device 3 and the presence of the raw material fibers 2 on the detector 4 is detected by the position sensors 5a and 5b, the driving of the conveying device 3 is stopped and detected. The material is identified by irradiating the near-infrared light to the raw fiber by the machine 4. The obtained data is sent to a computer (not shown), and the material of the raw fiber 2 is determined based on the identification result of the computer. Based on the identification data of this determination, the direction of the sorting machine 7 is changed, and further, the conveying device 3 is driven to feed the raw material fibers to the sorting machine 7. At the same time, the transport mechanism of the sorting machine 7 is also driven, so that the raw material fibers 2 are sorted according to the material and separated and collected in the nuclear sorting product storage unit 8.

  When the raw material fibers 2 such as cloth-like fiber waste are identified by the detector 4 and then pass through the position sensor 5a, the supply device 6 is restarted, and the next raw material fibers 2 are sequentially transferred to the conveying device 3. Fall and supplied. This series of operations is controlled using, for example, a sequencer, and these operations are repeatedly performed to separate the raw fibers 2.

  In the illustrated separation apparatus 1, the supply apparatus 6 is composed of an inclined conveyor. For example, the supply apparatus 6 hangs and transfers the cloth-like fiber waste 2 with a spiked lattice in which woods with thick steel needles are connected with a canvas, This is sequentially supplied onto the conveying device 3. At this time, the size of the raw fiber 2 is preferably 30 cm square or more because the identification frequency increases and the separation processing efficiency is inferior, and those having a very large size are 1 m wide and long in advance. It is preferable to cut it to 2 m or less for separation. Moreover, it is preferable that the conveying apparatus 3 consists of a conveyor apparatus. In addition, the detector 4 is installed so as to irradiate near infrared light from below the cloth-like fiber waste 2 because the identification accuracy is high when the material is identified in close contact with the cloth-like fiber waste 2. Preferably, the operation is performed.

  In addition, according to the method of sorting the raw material fibers 2 such as cloth-like fibers and cotton-like fibers, two to four sorting product storage portions 8 are installed according to the use of the separated and collected fibers, and the identified raw material 2 is made of cellulose. Cellulosic raw material fiber or cotton containing 10% by weight or more of the contained fiber is separated and collected into two types of raw material fiber consisting of synthetic fiber and other raw fiber that cannot be identified. Alternatively, it is separated and collected into three types: a cellulose-based fiber-like fiber or cotton-like fiber containing 10% by weight or more of a cellulose-containing fiber, an indistinguishable fiber, and a fiber made of other synthetic fibers. Furthermore, the fiber containing 10% by weight or more of the cellulose-containing fiber is indistinguishable from the fiber, the fiber containing 30% by weight or more of the acrylic fiber, and the fiber made of the other synthetic fiber. In addition, it is preferable to appropriately select and fractionate.

  As the position sensors 5a, 5b, and 5c, for example, an optical sensor having an action of detecting the presence of the cloth-like fiber waste 2 can be used based on whether or not light is reflected. While the raw material fiber 2 passes through the position of a certain position sensor 5c, the supply device 6 is driven and supplied to the transport device 3. On the other hand, when the raw material fiber 2 is present at the position of the position sensor 5b, the supply device 6 is stopped, and if the control is performed so that the raw material fiber 2 is not supplied to the conveying device 3, the separation operation can be performed sequentially. . In addition, if the installation position of position sensor 5a, 5b can detect the conveyance condition of the fiber raw material 2 and can control the drive of the conveying apparatus 3, a side part with respect to the conveyance surface of the conveyor part of the conveying apparatus 3, You may install in any of upper part and lower part.

  As for the control of the conveying device 3, if the position sensor 5a has the cloth-like fiber waste 2 and is not in the state 5b, it can be controlled to drive the supply device 6 to perform the following identification process. It becomes possible. Further, the timing of identification by the detector 4 is performed when the position of the fiber raw material 2 is detected by the position sensors 5a and 5b and then the conveying device 3 is stopped. Subsequently, the position of the sorting machine 7 is determined based on the identification data. change. And the fiber raw material 2 will be fractionated for every raw material and will be collect | recovered by the classification | category goods accommodating part 8 by interlocking and conveying the conveyor of the conveying apparatus 3 and the sorter 7. FIG.

  The sorter 7 may be configured so that it can be collected by installing a conveyor according to the number of the sort item storage units 8 and changing the transport path. In that case, it is necessary to calculate the time lag of the conveyance time based on the identification data and to adjust the timing.

  On the other hand, when separating scrolls such as curtain fabrics using the sorting apparatus of the present invention, they are sequentially supplied from the upstream side (supplying device 6 side) of the transporting device 3 and transported again after the material is identified by the detector 4. What is necessary is just to comprise as an apparatus which can convey to the downstream side with the apparatus 3, and can classify | categorize and collect | recover in consideration of the weight of a raw material.

  FIG. 9 is a flow chart of a process in which raw fibers such as cloth-like fibers and cotton-like fibers are made to be bristles after being identified and separated by a near-infrared spectrophotometer to identify the material constituting the cloth-like fibers. It is a figure, and when the cloth-like fiber is a curtain, it is a processing flow diagram in which it is cut with a cutting machine and / or a cutting machine to have a size of about 10 cm square, and then rebounded with a spreader. Moreover, FIG. 10 is a flowchart which shows an example of the processing flow for manufacturing a nonwoven fabric using the obtained bristles.

  When manufacturing a nonwoven fabric using the cloth-like fiber waste which consists of a curtain etc., it is necessary to cut | disconnect to the width | variety of about 10 cm first. As a cutting machine used for that purpose, it is preferable to cut using a sheet cutter having a feed mechanism and a cutting mechanism. Next, it is preferable to make a cloth piece of about 10 cm square as a predetermined size with a cutting machine in which a plurality of blades are installed in a rotating cylindrical shape. In addition, when processing a scroll-like cloth-like fiber made of an original fabric of curtain fabric, etc., as a cutting machine, for example, a round knife is installed on an elevating plate which is a kind of cutting machine, By cutting in the width direction while adjusting the cloth width, it can be efficiently cut into a strip-like cloth having a width of about 10 cm. If this strip-shaped cloth is made into a cloth piece of a predetermined size with a cutting machine in which a plurality of blades are installed in a rotating cylindrical shape, it can be similarly cut into a cloth piece of about 10 cm square. is there.

  A cloth piece cut into a size of about 10 cm square by a cutting machine is wetted with water, an antistatic agent, an oil agent, etc., and then opened by arranging a plurality of opening machines in series. By processing with an apparatus, or processing once or twice with a fiber spreader, and subsequently processing with a card machine or a garnet winder, it is possible to obtain a bristles in which the yarn is almost open. In general, it is difficult to open a filament of a polyester fiber with respect to a spun yarn, and it is preferable to treat the filament with a garnet type opening machine having a cylinder roll wound with a garnet wire. Therefore, it is preferable that the fiber waste containing 50% by weight or more of the polyester fiber is opened using the garnet-type spreader. In this way, by selecting the type of the spreader depending on the fiber material, the properties of the obtained bristles are improved. Therefore, after sorting for each material, it is preferable to select and process the spreader. .

  Furthermore, when opening the cut piece of the curtain with the opening machine as described above, it is preferable to use a opening machine having a structure in which the unopened article is separated. This is because separating the unopened material further prevents the fiber from being cut or damaged more than necessary if the cotton-like repellent is further processed by a fiber opening machine. On the other hand, when opening a curtain with a spreader in which multiple spreaders are lined up in series, combine the spreaders with the spreader wire around the cylinder roll in multiple stages and open the wire. It is easy to obtain good anti-wrists by sequentially opening the fibers with a fiber opening device in which the sharpenings of the blades are sequentially arranged so as to be small. Further, when the curtain waste is used in the form of anti-hair, it is used to separate and remove metal hooks, plastic deposits, and extremely damaged curtains. It is also preferable to select and to make it anti-haired.

  Moreover, when making the obtained bristles into a non-woven fabric, as will be described later, needle punching is performed using a needle punching machine, or a heat-fusible binder fiber is mixed with the bristles and then heat-fused to produce a non-woven fabric. The method to do is mentioned. When manufacturing a nonwoven fabric by these methods, you may manufacture a nonwoven fabric by mixing the virgin fiber for connecting a bristle. The virgin fiber to be blended to connect the repellent hair is the same material as the repellent hair obtained from the selected fiber material after identifying the type of material constituting the fiber waste by the near infrared spectrophotometer. Preferably, in the present invention, synthetic fibers excluding cellulose-containing fibers. In addition, when using virgin fibers made of the same fiber material as the fiber waste that has been sorted to a specific material, it is necessary to collect and recycle the scraps and defective products during the manufacture of the nonwoven fabric. It is preferable because quality is easy to control. The compounding quantity of the virgin fiber mix | blended in order to connect a repelling is 0 to 50 weight% with respect to 50-100 weight% of this repelling.

  About the heat-fusible binder fiber, for example, the sheath has a melting point of 200 ° C. or lower, preferably 70 ° C. or higher and 170 ° C. or lower, and is formed with a core made of a synthetic fiber made of a polyester resin or a polypropylene resin. A heat-fusible binder fiber having a core-sheath structure (this fiber may be simply referred to as a binder fiber). This heat-fusible binder fiber having a core-sheath structure is coated with a coating material around the core part that becomes the fiber body, and the binder fiber made of fibers having a two-layer structure forming the sheath part is mixed with the above-mentioned bristles. To use. As the heat-fusible binder fiber having this core-sheath structure, the core part is made of polyester resin and the sheath part is made of copolymer polyester resin, or the core part is made of polypropylene fiber and the sheath part is made of low melting point polyethylene. Various types of composite fibers (ES fibers) with different single fiber fineness, fiber length, and melting point are commercially available. For this reason, when a nonwoven fabric is produced by mixing binder fibers, a wide range of selections of the single fiber fineness, fiber length, and melting point of the binder fibers makes it easy to obtain a nonwoven fabric with good appearance and uniformity of the nonwoven fabric. be able to. Furthermore, by using a binder fiber that melts the sheath at a lower melting point, it is more preferable because it becomes easy to adhere almost uniformly from the surface to the inside of the nonwoven fabric even if milder molding processing conditions are selected, It is also possible to shorten the molding time.

  Further, the blending amount of the binder fiber with respect to the above-mentioned repelling is preferably in the range of 5% by weight or more and 40% by weight or less because the mixed state with the synthetic fiber is improved and the dispersion is uniformly dispersed in the nonwoven fabric. Furthermore, if it is the compounding quantity of this range, the excessive melt | fusion of binder fibers is suppressed and the nonwoven fabric advantageous also in cost can be obtained. Among these binder fibers, it is preferable to form a nonwoven fabric using a core-sheath type low melting point polyester fiber.

  Further, the fiber length of the binder fiber is preferably 3 mm or more and 70 mm or less, and the single fiber fineness is preferably 1.5 dtex or more and 7.8 dtex or less because the moldability of the nonwoven fabric is improved, It is a binder fiber used for.

Although the thickness and average surface density of the nonwoven fabric manufactured by the above-mentioned method may depend on the manufacturing method, for example, the thickness is 0.5 cm or more and 2 cm or less, and the average surface density is 300 g / m ² or more and 2000 g / m ² or less. It is a nonwoven fabric of the range.

  When the non-woven fabric is formed, a mixer such as a hopper, a bale, a breaker, a hopper mixer, or a fair note is used to mix the repellent with fibers such as binder fibers or connecting fibers. For example, the fibers weighed in a certain amount are, for example, the fibers carried in the hopper carried in the horizontal lattice, and the fibers in the spikes with the spiked lattice made by connecting the wood with thick steel needles connected with the canvas. Use a mixing machine such as a hopper, bale, or breaker that has a mechanism to mix up while picking up, opening and transporting with the needle of the spiked cylinder, and dropping miscellaneous materials, so as not to cause adhesion spots To be mixed.

  Moreover, there is no restriction | limiting in particular about the shaping | molding method of the nonwoven fabric used in this invention, However, A dry method is preferable as a well-known nonwoven fabric shaping | molding method. There are an air raid method and a card method in the dry method. In the air raid method, the mixed and opened fibers are collected by air flow into a mat shape, and the card method makes the fibers parallel to some extent while opening the fibers with a cylinder and needle cloth in a card machine, It is transported to a web forming apparatus having a web layer to create a raw mat.

  About the method of forming a nonwoven fabric from the raw fabric mat thus produced, a method of punching using a needle (needle punch felt), or a raw fabric mat containing a heat-fusible binder fiber is punched metal or Examples include a method (heat fusion type felt) in which the thickness is adjusted by sandwiching a raw fabric mat on a plate that passes hot air, such as a mesh wire net, and then heated and heated to form, and the binder fiber is thermally fused. About the heating temperature at the time of heating and fusing the raw fabric mat | matte which mix | blended the binder fiber, 120 to 180 degreeC is preferable from the moldability of a nonwoven fabric.

  By the way, while specifying the cellulose containing fiber in a fiber using a near-infrared spectrophotometer, there exists a thing containing the acrylic fiber which has a flame retardance in the fiber selected and removed. The acrylic fiber is particularly a material contained in a cloth-like fiber such as a curtain, which is a flameproof product. By using a near-infrared spectrophotometer, the acrylic fiber contains a fiber containing 30% by weight or more. If it is a specific and selected cloth, these cloth-like fiber wastes are opened to obtain rebounds, and when blending binder fibers and connecting fibers, virgin acrylic fibers can be used as necessary. When a non-woven fabric is prepared by appropriately blending, it is easy to make the synthetic fiber woven fabric flame-retardant. For example, when curtains, which are flameproof products in which polyester fibers and acrylic fibers are blended, are selected and collected, and the curtain fabrics are made into open bristles and synthetic fiber nonwoven fabrics are created, the resulting nonwoven fabric is The flame retardancy of the curtain is almost the same as that of the curtain.

On the other hand, when using the obtained nonwoven fabric as an industrial material for civil engineering, the use of a landfill disposal site water-permeable sheet or embankment holding sheet can be mentioned. In the synthetic fiber nonwoven fabric produced by the method of the present invention, natural fibers are also selected and removed as cellulose-containing fibers, so that the content is at least 10% by weight. Therefore, even when applied in soil, soil bacteria, etc. The nonwoven fabric is hardly decomposed by microorganisms and can be effectively used as an industrial material for civil engineering.

<Example>
The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.

(I) Identification of fiber material by plastic discriminator Curtain sample book made by Sumie Textile Co., Ltd .: Amano Trading Co., Ltd., which can identify 15 types of plastic materials for 318 brand curtain fabrics of Ventana ('98 -'00) The material was identified using a plastic type discriminator (PlaScan-W).

(Identification 1)
As a result of analyzing 67 brand curtain samples containing 10% by weight or more of rayon, broad peaks were generated at 1924 to 1974 nm (1937, 1946 nm), and the fibers were identified as cellulose-containing fibers.

(Identification 2)
As in (Identification 1), 31 brand curtain samples containing 10% by weight or more of cotton were analyzed. As a result, broad peaks were generated at 1924 to 1974 nm (1937, 1946 nm), which were identified as cellulose-containing fibers. It was.

(Identification 3)
In order to identify and classify fibers containing acrylic fibers, the identification software was changed to identify the fibers so that they could be identified as acrylic fiber, acrylic fiber / polyester fiber mixture, and other plastics. . As a result of analyzing this sample of 57 brand curtains containing 30% by weight or more of acrylic fiber, 18 brands containing 60% by weight or more of acrylic fiber were identified as “PVDC” and the remaining 39 brands were identified. Identified as “acrylic fiber / PET”.

(Identification 4)
As a result of identifying 150 brands that did not contain rayon, cotton, and acrylic fibers, 129 brands were identified as “PET” and all contained 50% by weight or more. The remaining 21 brands were displayed as “OTHERS” which is another material. Even in these 21 brands, characteristic peaks were confirmed at 2155, 2183, and 2208 nm, and it was identified that polyester fibers were contained, but the content of polyester fibers was less than 50% by weight. It was.

(Identification 5)
30% by weight of 100% polyester fiber curtain fabric, 20% by weight of polyester fiber / acrylic fiber blend curtain (weight ratio = 65/35), and acrylic fiber / polyester fiber blend curtain (weight ratio = 50) / 50) 20% by weight, 10% by weight of a polyester fiber / cotton blended curtain (weight ratio = 72/28), and 20% by weight of a 100% cotton curtain were prepared and identified with a plastic fractionator. As a result, 28% by weight of the curtain containing cellulose-containing fibers, 17% by weight of curtains containing acrylic fibers, and 48% by weight of curtains obtained by separating and removing acrylic fibers and cellulose-containing fibers. 7% by weight of the impossible fiber was collected separately. As a result of confirming the identification accuracy of the curtains that were separated by collating with the fabric of the curtains used, the curtains containing acrylic fibers, the curtains containing acrylic fibers, and the curtains containing cellulose-containing fibers were separated and removed. Curtains containing cellulose-containing fibers were not included.

(II) Fabrication of nonwoven fabric (Example 1)
The non-woven fabric material (A) was a curtain obtained by separating and removing the fiber containing the acrylic fiber and the curtain containing the cellulose-containing fiber that were separated in the identification 5. From the chart in the near infrared spectroscopic analysis, it was found that the nonwoven fabric material contained polyester fibers and acrylic fibers. The nonwoven fabric material (A) was cut so as to have a width of 10 cm, and then opened twice by (Taiwai Opening Machine Co., Ltd. (Cylinder Opener B-03 type)) to obtain a spread product (A). 80 parts by weight of the spread product is blended with 20 parts by weight of a core-sheath type low melting point polyester fiber (sheath melting point 75 ° C., 51 mm, 4.4 dtex), and after blending and opening with a card machine, the average surface The fiber laminate was sandwiched between and fixed to a spunbonded nonwoven fabric so as to have a density of about 1 kg / m ^{2. The} punched metal plate was filled and compressed to a thickness of 25 mm with a hot air convection dryer. After drying at 140 ° C. for 15 minutes, the nonwoven fabric 1 was taken out, and the nonwoven fabric 1 had a thickness of 25 mm and an average surface density of 972 g / m ² .

(Example 2)
The fiber containing the acrylic fiber classified by identification 5 was collected as a nonwoven fabric material (B). In the same manner as Non-woven fabric 1, it was opened twice by Taihei Co., Ltd. (Cylinder opener B-03 type) to obtain a spread product (B). 80 parts by weight of the spread product is mixed with 20 parts by weight of a core-sheath type low-melting polyester fiber (sheath part melting point 110 ° C., 25 mm, 2.2 dtex), and after further blending and opening with a card machine, Cotton mixed with an airlay former was laminated and fixed obliquely with respect to the running direction while moving in the running direction. The nonwoven fabric 2 was taken out after being dried at 160 ° C. for 2 minutes by a hot air convection dryer in a state where the fibers were sandwiched between spunbond nonwoven fabrics and filled and compressed in a punching metal plate. Non-woven fabric 2 had an average surface density of 990 g / m ² and a thickness of 13 mm.

(Example 3)
In the same manner as the nonwoven fabric 2, a spread product (B) was obtained. 50 parts by weight of the spread product (B), 20 parts by weight of core-sheath type low melting point polyester fiber (sheath part melting point 110 ° C., 25 mm, 2.2 dtex) and acrylic fiber (manufactured by Kaneka Corporation)
, 7.8 dtex) blended at a ratio of 30 parts by weight, and after further blending and opening with a card machine, the cotton blended with an airlay former was moved in the running direction, and was laminated and fixed obliquely with respect to the running direction. . The nonwoven fabric 3 was taken out after being dried at 160 ° C. for 2 minutes by a hot air convection dryer in a state where the fibers were sandwiched between spunbond nonwoven fabrics and filled and compressed in a punching metal plate. The nonwoven fabric 3 had an average surface density of 1050 g / m ² and a thickness of 15 mm.

Example 4
In the same manner as the nonwoven fabric 2, a spread product (B) was obtained. Next, the nonwoven fabric 4 was recovered by transferring it to a needle punching device manufactured by DILO as it was as a raw material with the surface density adjusted by laminating with a web layer by aligning the direction of the fibers through a card machine. Punching is performed by setting a needle FPD-75 40S manufactured by Organ Needle at 2.7 pieces / cm ² on a 50 cm × 20 cm needle plate, punching speed: about 1.5 seconds / time, feeding speed: about 50 cm / The nonwoven fabric 4 (needle punch felt) having a thickness of 7 mm and an average surface density of 999 g / cm ² was collected.

(Comparative Example 1)
The fiber waste mainly composed of cotton was collected as a nonwoven fabric material (C) after selecting cellulose-containing fibers with a plastic discriminator comprising a near-infrared spectrophotometer. The cotton content in the nonwoven fabric material (C) was 95% by weight from the product label. Next, after separating and removing the cellulose-containing fibers from the curtain waste with a plastic discriminator composed of a near-infrared spectrophotometer, only those discriminated as “PET” were collected and used as a nonwoven fabric material (D). This non-woven fabric material (C) and non-woven fabric material (D) were cut so as to have a width of 10 cm in the same manner as the non-woven fabric 1 and then each made by Taihei Opening Machine (Cylinder Opener B-03). The opened product (C) and the opened product (D) were obtained by opening twice. 50 parts by weight of the spread product (C) is mixed with 30 parts by weight of the spread product (D) and a core-sheath type low-melting polyester fiber (sheath part melting point 75 ° C., 51 mm, 4.4 dtex) at a ratio of 20 parts by weight. Then, after further blending and opening with a card machine, they were laminated and fixed obliquely so that the average surface density was about 1 kg / m ² . The laminated fiber raw fabric was sandwiched between spunbonded nonwoven fabrics, dried and filled at 160 ° C. for 20 minutes with a hot air convection dryer in a state where the punched metal plate was filled and compressed, and the nonwoven fabric 5 was taken out. The thickness of the nonwoven fabric 5 is 25 mm, the average surface density of 960 g / m ^2.

(Comparative Example 2)
The curtain containing the cellulose-containing fibers separated by identification 5 was collected as a nonwoven fabric material (E). The content of cotton in the nonwoven fabric material (E) was about 75% by weight as calculated from the product label. Next, the curtain which separated and removed the fiber containing an acrylic fiber and the curtain containing a cellulose containing fiber classified by identification 5 was collect | recovered as a nonwoven fabric material (A). This non-woven fabric material (E) and non-woven fabric material (A) are each cut to a size of 10 cm square, and opened twice by Taihei-made opener (Cylinder Opener B-03). As a result, a spread product (E) and a spread product (A) were obtained. 15 parts by weight of the spread product (A) is mixed with 65 parts by weight of the spread product (E) and a core-sheath type low-melting polyester fiber (sheath part melting point 75 ° C., 51 mm, 4.4 dtex) at a ratio of 20 parts by weight. Then, after further blending and opening with a card machine, they were laminated and fixed obliquely so that the average surface density was about 1 kg / m ² . The laminated fiber fabric was sandwiched between spunbond nonwoven fabrics, and after being subjected to drying treatment at 160 ° C. for 20 minutes in a hot air convection dryer in a state where the punched metal plate was filled and compressed, the nonwoven fabric 6 was taken out. The thickness of the nonwoven fabric 6 is 20 mm, the average surface density of 976 g / m ^2.

(Reference Example 1)
A nonwoven fabric 7 (YPF, manufactured by Yamaichi Co., Ltd.) made of recycled polyester fiber having a thickness of 30 mm and a surface density of 1000 g / m ² was used as the synthetic fiber nonwoven fabric.

(III) Physical Properties of Nonwoven Fabric A nonwoven fabric having an average surface density of 1000 ± 50 g / m ² was used as a test material. About the nonwoven fabric 1-the nonwoven fabric 7, 5 pieces of cloth pieces of 200 mm x 25 mm were cut out and used as test samples. Using the flammability measurement method A of JIS A9511, tilt the sample by -45 ° from the vertical direction as shown in Fig. 11, apply the flame of the candle for the fire source to the tip of the right end of the sample, and take about 5 seconds. The flame was moved to the ignition limit indicator line at a constant speed and retracted immediately after reaching. After the sample was removed from the fire, the state was maintained for 15 seconds, and the flammability was measured by measuring how the fire extinguished and the combustion distance from the tip of the right end of the sample, and compared the flame retardance level. The results are shown in Table 2.

It is a graph which shows the light absorption spectrum absorbed when near infrared rays are irradiated to the cotton cloth among various cloth-like fibers. It is a graph which shows the light absorption spectrum absorbed when near infrared rays are irradiated to the cloth of a polyester fiber among various cloth-like fibers. It is a graph which shows the light absorption spectrum absorbed when near-infrared rays are irradiated to the cloth of an acrylic fiber among various cloth-like fibers. It is a graph which shows the light absorption spectrum absorbed when near-infrared rays are irradiated to the cloth of acrylic fiber among various cloth-like fibers. It is a graph which shows the light absorption spectrum absorbed when near infrared rays are irradiated to the cloth in which 69 weight% of polyester-type fibers and 31 weight% of rayon were mixed among various cloth-like fibers. It is a graph which shows the light absorption spectrum absorbed when near infrared rays are irradiated to the cloth in which 70 weight% of polyester-type fibers and 30 weight% of acrylic fibers were mixed among various cloth-like fibers. It is a graph which shows the light absorption spectrum absorbed when near-infrared rays are irradiated to the cloth by which 55 weight% of polyester-type fibers and acrylic fiber 45 weight% were mixed among various cloth-like fibers. It is a schematic explanatory drawing which shows the structural example of the sorting apparatus which sorts various cloth-like fiber wastes for every fiber raw material. It is a flowchart which shows an example of the processing flow at the time of manufacturing a fluff after identifying the raw material which comprises a fiber waste in the method of this invention, and performing a classification. It is a flowchart which shows an example of the processing flow at the time of manufacturing a nonwoven fabric from the bristles obtained from the fiber waste in the method of this invention. It is explanatory drawing of a flame retardance test.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sorting apparatus 2 Raw material fiber 3 Conveying apparatus 4 Detector 5a, 5b, 5c Position sensor 6 Feeding apparatus 6a Hook 7 Sorting machine 8 Sorted goods storage part

Claims (10)

A method for producing a synthetic fiber nonwoven fabric,
A material identification step of identifying a cloth-like and / or cotton-like fiber as a raw material, and a kind of material constituting the cloth-like and / or cotton-like fiber by a near infrared spectrophotometer,
In the material identification step, a cellulose-excluding step of selecting cloth-like and / or cotton-like fibers identified as containing 10% by weight or more of cellulose-containing fibers and removing them from the raw material,
A repulsion process in which cloth-like and / or cotton-like fibers other than the cloth-like and / or cotton-like fibers including the excluded cellulose-containing fibers are used as repellings;
A non-woven fabric processing step of processing the anti-hair obtained in the anti-hair step into a non-woven fabric;
The manufacturing method of the synthetic fiber nonwoven fabric characterized by having.   The method for producing a synthetic fiber nonwoven fabric according to claim 1, wherein the cloth-like and / or cotton-like fibers are fiber waste, and the synthetic fiber nonwoven fabric to be produced is a recycled synthetic fiber nonwoven fabric.   The method for producing a synthetic fiber nonwoven fabric according to claim 1 or 2, wherein the cloth-like fiber is a curtain.   The method for producing a synthetic fiber nonwoven fabric according to any one of claims 1 to 3, wherein the cellulose-containing fiber is a fiber containing 10% by weight or more of cotton or rayon.   In the material selection step, in the material identification step, a cloth shape and / or a cloth shape identified as containing 30% by weight or more of acrylic fiber from cloth-like and / or cotton-like fibers as raw materials by a near infrared spectrophotometer and / or Alternatively, the cotton-like fibers are selected, and the selected cloth-like and / or cotton-like fibers are collected and converted into bristles in the above-mentioned bristles process. The manufacturing method of the synthetic fiber nonwoven fabric in any one of Claims 1-4 made into a flame-retardant nonwoven fabric. A cloth-like and / or cotton-like fiber separating device,
An apparatus for supplying cloth-like and / or cotton-like fibers;
A position sensor for detecting the supply status of cloth-like and / or cotton-like fibers;
A transport device for intermittently transporting the supplied cloth-like and / or cotton-like fibers;
A detector for detecting reflected light by irradiating near-infrared light to cloth-like and / or cotton-like fibers conveyed by the conveying device;
A position sensor for detecting the state of conveyance of cloth-like and / or cotton-like fibers at the position of the detector;
A sorting machine that sorts cloth-like and / or cotton-like fibers into fiber materials based on the identification data in the detector;
2 to 4 sorter storage units installed at the rear of the sorter;
An apparatus for separating fabric-like and / or cotton-like fibers, comprising:   The supply device is a device that supplies cloth-like and / or cotton-like fibers from the upper part of the conveying device, and hooks and pulls up the cloth-like and / or cotton-like fibers in an upwardly inclined path. The cloth-like and / or cotton-like fiber separation device according to claim 6.   8. The cloth and / or cloth according to claim 6 or 7, wherein the sorting machine changes the transport path based on the cloth and / or cotton-like fiber identification data, and puts it into the sorted article storage unit. Or a device for separating cotton-like fibers.   9. The sorting apparatus according to claim 6, wherein the cloth-like and / or cotton-like fibers are fiber waste, and are used for sorting cloth-like fiber waste and / or cotton-like fiber waste.   Cellulosic cloth-like and / or cotton-like fibers containing 10% by weight or more of cellulose-containing fibers, acrylic cloth-like and / or cotton-like fibers containing 30% by weight or more of acrylic fibers, and other synthetic fibers It distinguishes into the cloth-like and / or cotton-like fiber which becomes, and the cloth-like and / or cotton-like fiber which consists of an indistinguishable fiber, It classify | categorizes and collect | recovers in any one of Claims 6-9 characterized by the above-mentioned. The cloth-like and / or cotton-like fiber separation apparatus as described.

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