JP2007117837A - Recycle system for separating and recovering fiber components and vinyl chloride-based resin components from gloves, separating and recovering method, and regenerated vinyl chloride-based resin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To precisely, efficiently separate and recover vinyl chloride-based resins from fiber-made gloves, the surfaces of which are coated with the vinyl chloride-based resins, or gloves having foreign matter adhering to the surface so as to recycle these gloves. <P>SOLUTION: A recycle system comprises; an impact-type crusher 1 having a screen 10 for regulating the sizes of ground gloves; a separator 16 for separating fiber components from the ground gloves crushed by the impact-type crusher 1; a shear-type crusher having a screen for regulating the sizes of the crushed gloves from which the fiber components are separated by the separator 16; and a separator for separating the crushed gloves crushed by the shear-type crusher into fiber components and vinyl chloride-based resin components. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a fiber component and a vinyl chloride type from a glove provided with a resin coating layer by coating at least a part of the outer surface of a fiber hand made of woven or knitted fibers with a resin coating layer. The present invention relates to a recycling system and a separation / recovery method for separating and collecting resin components, that is, separating and collecting each component, and further used in automobile manufacturers, home appliance manufacturers, machine parts manufacturers, etc. Separates vinyl chloride resin and fiber components from used gloves with foreign substances such as lubricating oil attached, and separates and removes foreign substances including metal powder, metal pieces, oil, etc., from vinyl chloride resin The present invention relates to a recycling system and a separation and recovery method for separating and recovering the vinyl chloride resin in order to recycle the synthetic resin as a recycled raw material.

For example, the outer surface of a knitted glove is coated with one or more layers of vinyl chloride resin as a glove with a surface of a fiber hand that is coated with vinyl chloride resin, improving usability and workability. Gloves are known. These gloves coated with vinyl chloride resin are used by automobile manufacturers, home appliance manufacturers, machine parts manufacturers, etc., and foreign materials such as metal powder, metal pieces, lubricating oil, and dust adhere to the surface of the gloves. Although some are discarded, in recent years, demands for recycling and collection of used gloves are increasing from the viewpoint of reducing waste and landfill disposal. In addition, the waste of vinyl chloride resin-coated gloves that are free of foreign matter, such as defective products that are produced during the manufacturing process, modified products such as designs, and disposal items that are in long-term inventory, are also treated with fiber materials made of knitted gloves. Since it is very difficult to separate the surface synthetic resin coating layer typified by vinyl chloride resin, the waste of gloves coated with these vinyl chloride resins cannot be recycled, and most of them are landfill and incineration. Had been processed. However, incineration of gloves covered with vinyl chloride resin has problems such as measures for incinerator exhaust gas countermeasures and shortening of incinerator life, so it has to be landfilled. Expenses are rising and encountering difficult situations. Therefore, there is an effective method of reusing vinyl chloride gloves to solve this problem and a method of separating and recycling the fiber component (knitted glove component) and vinyl chloride resin component in the vinyl chloride glove. It was desired.
On the other hand, with regard to recycling gloves, there is a waste treatment system (Patent Document 1) that separates plastic waste, then pyrolyzes it into oil and uses it as fuel. At present, no attempt has been made to recycle resin materials.
By the way, a composite material in which a fiber component and a synthetic resin material are combined is used as a plastic material such as an automobile interior material. In an automobile interior material made of a composite material, the constituent fiber component and the synthetic resin material are used. Dust separation devices for separation are well known (Patent Document 2 and Patent Document 3), but the outer surface of a knitted glove is coated with a vinyl chloride resin or urethane resin, and the surface is coated with foreign matter. No attempt has been made to recycle gloves coated with resin.
JP-A-8-94797 Japanese Patent No. 3410997 JP 2002-219447 A

  The problem to be solved by the present invention is that the fiber constituting the fiber hand to recycle the glove whose surface is coated with a vinyl chloride resin or the glove having a foreign substance attached to the surface. Propose a recycling system and method that can efficiently separate and recover vinyl chloride resin from gloves coated with vinyl chloride resin as a component, and to recycle vinyl chloride resin as a recycled material. .

A recycling system for separating and collecting a fiber component and a vinyl chloride resin component from a glove having a vinyl chloride resin coated on at least a part of the outer surface of a fiber hand,
An impact pulverizer equipped with a screen for regulating the size of pulverization of gloves, a separator for separating fiber components from the pulverized material pulverized by the impact pulverizer, and a fiber component by the separator In order to separate the pulverized material pulverized by the shearing pulverizer into a fiber component and a vinyl chloride resin component A recycling system for separating and recovering the fiber component from the glove and the vinyl chloride resin component.

  Preferably, each of the two separators is a wind separator that separates the fiber component and the vinyl chloride resin component by wind power.

  Separation accuracy can be improved by providing a plurality of at least one of the impact pulverizer and the shear pulverizer.

  Separation efficiency can be improved by providing a wind power separator that separates the pulverized material pulverized by each of the plurality of pulverizers.

  The pulverized product that has been crushed by the shearing pulverizer and then separated and recovered by the separator or the wind power separator is retained on a sieve, and the fiber component adhering to the surface of the pulverized product is vinyl chloride-based. By providing a vibrating sieve that is scraped off and separated from the resin component, the fiber component can be efficiently separated.

  A vibrating sieve that retains the pulverized material that has been pulverized by the impact pulverizer and then separated and recovered by the separator or the wind power separator to scrape off foreign matter adhering to the surface of the pulverized material. It is possible to rub off foreign matter adhering to the surface of the pulverized product.

  The wind separator has a vacuum gap in the vertical cylindrical separation tower provided with a vacuum suction port in the upper part and an air supply port in the lower part, and a ventilation gap exists between the circular plate and the inner wall of the separation cylinder around it. The pulverized material pulverized by the shearing pulverizer by an air transport pipe is carried into the center of the circular plate, and the vinyl chloride resin component in the pulverized material is transferred to the center of the circular plate. The dust separation device is preferably a dust separation device that drops from the peripheral edge and enters the fiber component through the air replenishing port and is sucked into the vacuum suction port on the air flow rising in the separation tower.

  It is preferable that the impact pulverizer is a swing hammer crusher type in which a punching metal or a screen having a mesh opening of 4 mm or more and 25 mm or less is installed to regulate the size of pulverization.

  The shearing pulverizer is preferably a shearing pulverizer provided with a punching metal or a screen having a mesh opening of 0.5 mm or more and 12 mm or less that regulates the size of pulverization.

  It is preferable that the mesh opening of the vibration sieve is 0.5 mm or more and 12 mm or less.

  A suction hood connected to a suction duct may be provided on the sieve of the vibrating sieve, and the fiber component and dust component remaining on the sieve may be separated by vacuum suction.

  The fiber material constituting the fiber master is cotton and can absorb oil.

  The foreign matter adhering to the glove contains at least one of metal powder, metal pieces, and oil.

  The vibrating sieve that scrapes off foreign matter adhering to the surface of the pulverized product is a circular vibrating sieve.

  It can also be set as the isolation | separation collection method which isolate | separates and collects a fiber component and a vinyl chloride-type resin component from a glove using the recycling system in any one of Claims 1-15.

  The recycled vinyl chloride resin according to the present invention comprises a vinyl chloride resin component separated and recovered from a glove by the separation and recovery method.

According to the present invention, a glove is pulverized with an impact pulverizer, and the pulverized product is separated by a separator and recovered. By separating with a separator, the vinyl chloride resin component and the fiber component that make up the glove can be separated with high accuracy and reliability, so the recovered vinyl chloride resin component can be efficiently used. Materials can be recycled. Further, by using a wind separator as the separator, the vinyl chloride resin component and the fiber component can be efficiently separated. Further, by providing a vibration sieve that scrapes off the fiber component adhering to the surface of the pulverized product from the vinyl chloride resin component, the vinyl chloride resin component and the fiber component can be accurately separated. In addition, by providing a vibrating screen that rubs off foreign matter, foreign matter such as metal powder, metal pieces, oil, and dust attached to the used gloves can be separated and removed. It is preferable that the metal powder or the metal piece is aluminum because the aluminum can be reliably separated from the glove. Moreover, the foreign substance which consists of oil is adsorbed by the fiber component which can adsorb | suck an oil, and can isolate | separate from a vinyl chloride resin. Furthermore, since the vinyl chloride resin, which is a synthetic resin separated and recovered according to the present invention, can be reused for vinyl chloride products such as vinyl chloride flooring and sound insulation sheets, the vinyl chloride resin raw material can be recovered and recycled. It is useful in. The impact type pulverizer and the shear type pulverizer of the present invention are replaced, that is, the main component is a vinyl chloride resin recovered by separating and recovering the pulverized product with a separator. After the pulverized product was pulverized with an impact pulverizer, the vinyl chloride resin component and the fiber component were separated with a separator, the temperature of the resin increased with the impact pulverizer, and the fibers were The entangled resin component melts and hardens, or after a certain amount of treatment, the fiber component accumulates on the screen without being cut and may not be crushed and cannot be separated. Inconvenience occurs.
If the impact crusher is a swing hammer crusher type crusher, gloves can be efficiently crushed with a large impact force. Therefore, it is possible to perform separation and recovery with high productivity without taking the trouble of cutting into a small size in advance.
Moreover, separation accuracy can be improved by providing a plurality of impact pulverizers and shear pulverizers, and repeatedly pulverizing twice or more with an impact pulverizer, shear pulverizer, or both pulverizers. it can. In this case, the recovery efficiency can be improved without lowering the separation accuracy when a plurality of only one crusher is provided, compared to a case where a plurality of both the impact crusher and the shear crusher are provided. Among them, the case where one impact type pulverizer and a plurality of shear type pulverizers are provided is preferable in terms of both separation accuracy and recovery efficiency.

The present invention is described in more detail below.
In the present invention, FIG. 1 shows a work glove (not necessarily work) 3 which is an object to be treated, and, as will be described below, outside of a knitted glove 3a which is a kind of fiber hand. The entire surface (or part of the surface) may be covered with a vinyl chloride resin 3b, which is a thermoplastic resin.
In the recycling system of the present invention, there is no particular limitation on the fiber content as long as it is a work glove having a fiber content in a range that achieves the object of the present invention. Those with a fiber content of 15-25% can be recycled well. In addition to knitted fabric, the fiber master may be woven (woven fabric) or non-woven fabric.

As described above, the working gloves 3 coated with the vinyl chloride resin used in the present invention include defective products generated during glove manufacturing and items discarded during renewal. These are used gloves that are used in machine parts manufacturers, etc., and are discarded after being used after the foreign matter such as metal powder, metal pieces, lubricating oil, and dust adheres to the surface of the gloves. Cotton, hemp, nylon, polyester, polyacrylonitrile, wool, and silk are generally used for the fiber material of the knitted glove 3a, which is the base material of the gloves 3 for vinyl chloride resin-coated work. It may be a blended product. Among them, the one using cotton is most commonly used because it has a good touch, is excellent in hygroscopicity and can absorb the lubricating oil well, and is inexpensive. . On the other hand, as a material constituting the resin coating layer 3b of the work gloves, vinyl chloride resin, polyurethane resin, natural rubber, or synthetic rubber such as acrylonitrile-butadiene rubber (NBR) is known. For work gloves coated with a plastic resin, one or more layers of vinyl chloride resin are laminated to provide a non-slip function, wearability, oil resistance, tear resistance, wear resistance, etc. Improved gloves are used. In the working glove 3 in which the resin coating layer 3b is coated with a vinyl chloride resin made of a vinyl chloride resin, if the fiber component forming the knitted glove 3a is accurately separated, the recovered resin is vinyl chloride. Since it is a resin, it has high processability and is easy to recycle.

On the other hand, the manufacturing method of these working gloves 3 is manufactured by a dip coating method or a spray coating method, which is mainly immersed in a fluid paste sol when heated from room temperature to about 100 ° C. In addition, a production method is also employed in which an extruded film or sheet obtained by extrusion molding is subjected to secondary processing.
The gist of the recycling method and system for the working gloves 3 coated with the vinyl chloride resin of the present invention is to separate and remove the fiber component comprising the knitted gloves 3a from the resin component, and further to the working gloves. 3 is a fiber component comprising a knitted glove 3a by removing at least one foreign substance, such as metal powder, metal pieces, oil, dust, etc., attached to the surface, and sieving the crushed material. Are separated and removed and recycled as a recycled raw material and a method for recycling.

  A system for separating and recovering the fiber component and the vinyl chloride resin component made of the fiber material constituting the fiber hand from the work glove 3 will be described. As shown in FIG. After pulverizing with a type pulverizer, the pulverized product is subjected to wind separation using a wind separator. Subsequently, the pulverized product from which the fiber component has been separated is pulverized by a shearing pulverizer, and the pulverized product is basically separated into a fiber component and a vinyl chloride resin component by an wind separator. Although a wind separator is shown here, a separator other than wind power, for example, a separator by specific gravity sorting such as a cyclone or an air jig sorter may be used. Specifically, as shown in FIGS. 4 and 9, the working glove 3 is pulverized by the impact pulverizer 1 in the first pulverization step, and then the fiber component and the vinyl chloride resin in the first wind separation step. Separate wind components into components. Next, as shown in FIG. 5 and FIG. 9, the pulverized material mainly composed of the vinyl chloride resin separated by wind force is pulverized by the shearing pulverizer 23 of the second pulverization step, and then the second wind separation step. To separate the wind component into the fiber component and the vinyl chloride resin component. The pulverized product mainly composed of vinyl chloride resin separated by wind power in the second wind separation process is screened by the vibrating screen 37 of the screen screening process shown in FIG. The pulverized product of the system resin component will be collected. Then, after the first wind force separation step, the pulverized material mainly composed of the vinyl chloride resin separated in the first wind force separation step is retained on the screen of the vibrating screen 33 shown in FIG. 7 for a predetermined time. It is more preferable to carry out by providing a first sieving selection step of supplying the pulverized product and scraping off foreign matter adhering to the surface of the pulverized product. When providing this 1st sieve selection process, the sieve selection process which processes the resin component collect | recovered from the 2nd wind force separation process is demonstrated as a 2nd sieve selection process.

  Specifically, as shown in FIGS. 2, 4 and 9, first, in the first pulverization step, the work gloves 3 are pulverized using an impact pulverizer. The impact pulverizer used in the present invention is a pulverizer that rotates a rotating body at a high speed to obtain an impact force, and pulverizes with a hammer (rotating blade) attached to the rotating body, and a ring hammer crusher depending on the shape of the hammer. For example, as shown in FIG. 2 and described below, the swing hammer crusher 1 rotates and crushes a plurality of rotary blades 9 made of a hammer. The swing hammer crusher 1 is provided with an insertion port 2 through which an operation glove 3 is inserted at the upper end, and a rotating body 8 formed of a plurality of disks is provided on the circumference of the rotating shaft 11 so as to be integrally rotatable. One end of each of four hammers (rotating blades) 9 is rotatably connected to four rotating poles 13 installed on the outer peripheral edge at predetermined intervals along the circumferential direction. A hammer (rotating blade) 9 is driven to rotate, impact is applied to the object to be processed, and is pulverized by the impact force so that the pulverized material is guided downward through the pulverized material recovery part 1b provided at the lower part. And one of the hammer crushers. The swing hammer crusher 1 is configured to rotate a rotating shaft 11 with a plurality of rotating blades 9 (four here, but any number) that are freely rotated with one end fixed to the circumference of the rotating body 8. Is caused to open in the vertical direction with respect to the rotating shaft 11 by the centrifugal force generated by the above, and to be driven to rotate, to give an impact to the object to be processed, and to pulverize by the impact force. When the working glove 3 is crushed by the swing hammer crusher 1, the working glove 3 which is the object to be treated is crushed and the fiber layer (fiber component) made of the knitted glove 3a is peeled off from the coated resin layer (resin component). Thus, the pulverized material of the work gloves 3 can be collected. When the working gloves 3 are crushed by the swing hammer crusher 1, the swing hammer crusher 1 is usually provided with a screen 10 made of punching metal or a lattice, and a desired diameter can be selected by selecting an opening diameter of the screen 10. A pulverized product having a particle size can be recovered. In addition, the size of the pulverized product can be controlled by the opening diameter of the installed screen, and the residence time of the object to be processed can be controlled.

As described above, the swing hammer crusher 1 is crushed by putting material (working gloves 3) into the hammer (rotating blade) 9 because the end of the hammer (rotating blade) 9 is suspended on the rotating pole 13 and is not fixed so as not to rotate. In this case, when the load is applied due to the pulverized material of the working gloves 3 and the cotton-like dust composed of fiber components being caught on the rotary blade 9, the rotary blade 9 escapes and it is difficult to apply a load exceeding the allowable load. There is. More specifically, the hammers (rotating blades) 9 are arranged at right angles to the axial direction of the rotating body 8 and at a predetermined interval, for example, about 5 mm, and the hammer (rotating blade) 9 rotates at high speed. A rotating blade 9 is suspended through one end of the rotating blade 9 around the axis of four fixing poles 13 arranged so as to pass through a rotating body composed of a plurality of discs attached to a rotating shaft 11 that rotates. It is connected freely. As the shape of the rotary blade, it is possible to use a plate-like shape, and for example, a plurality of these rotary blades formed as a set and arranged so as to be spaced apart from each other. Thus, when the working gloves 3 are pulverized to separate the fiber component, among the swing hammer crushers, the shape of the blade can be easily changed and changed easily, the rotation speed of the blade is high, etc. For this reason, a Balz type pulverizer is suitable for implementing the present invention.
In particular, since the swing hammer crusher 1 is normally provided with a screen 10 and rotates and pulverizes the rotary blade 9 made of a hammer at a high speed, the swing hammer crusher 1 is a workpiece to be processed against a hammer crusher which is a kind of impact pulverizer. It is characterized by high impact frequency. When the rotation speed is 1000 rpm or more and 1800 rpm or less, the grinding efficiency is high, which is a desirable mode. That is, when the working gloves 3 are pulverized by the swing hammer crusher 1, an impact is applied to the object to be processed by the rotary blade 9 made of a hammer, and the resin coating material in which the fiber component is planted is crushed and crushed. It is characterized in that the component and the resin component of the resin coating layer 3b can be efficiently separated.
In the swing hammer crusher 1, a suction air duct 4 is placed in a predetermined portion thereof, for example, inside the pulverizer 7 where the pulverized pulverized material falls through the opening of the screen 10 as shown in FIGS. 2 and 4. By providing the inside 7 of the swing hammer crusher 1 from the suction air duct 4 connected to the transport blower 12, the pulverized products 6 and 14 of the working gloves 3 generated by pulverization can be collected by suction. Furthermore, the processing speed is improved by improving the passing speed of the pulverized material passing through the screen 10 made of punching metal or lattice by the suction force of the suction air duct 4, and the processing object is clogged and adhered inside the pulverizer. It is possible to have an effect of preventing the above.

The working gloves 3 can be pulverized by using a swing hammer crusher 1 provided with a screen 10 made of a punching metal that regulates the size of the pulverized material. It is preferable to grind the particle size of the product to 4 mm to 25 mm, preferably 5 mm to 15 mm. When the particle size of the pulverized product is 4 mm or more and 25 mm or less, the base fiber and the coated vinyl chloride resin can be efficiently peeled off during the pulverization process. Furthermore, when the particle size of the pulverized product is selected to be 5 mm or more and 15 mm or less, the working gloves 3 have high pulverization efficiency, and the fiber component is sufficiently separated from the resin component during the pulverization process by the swing hammer crusher 1. Therefore, it is more preferable. The shape of each opening of the screen 10 is most commonly a circular shape, but is not particularly limited, and may be an elliptical shape, a rectangular shape, or any other shape.

Next, as described above, the process proceeds to the first wind separation process. That is, the pulverized products 6 and 14 pulverized by the swing hammer crusher 1 are separated by wind, and the pulverized product 6a mainly composed of vinyl chloride resin is recovered in the separated pulverized product receiving tank 17 (see FIG. 4) by wind separation. The fiber component 22a, which is a pulverized product other than the pulverized product 6a, is recovered in the fiber component recovery bag 21 via the pipe 15, the blower 18, and the cyclone separator 19. Subsequently, the process proceeds to the second pulverization step. As shown in FIG. 5, the pulverized product 6a is charged into the inlet 2 of the shearing pulverizer 23 and pulverized by the shearing pulverizer 23, and then the second wind separation step. The pulverized product 6b mainly composed of vinyl chloride resin separated by wind power in the dust separator 16 is collected in the separated pulverized product collection receiving tank 17, and the fiber component 22b, which is a pulverized product other than the pulverized product 6b, is piped. 15, the fiber component is recovered in the fiber component recovery bag 21 through the blower 18 and the cyclone separator 19. Then, the recovered pulverized product 6b is screened by the vibrating screen 37 in the screen for screening as shown in FIG. 8, so that the fiber component 22d and the vinyl chloride resin components 6d and 6e can be reliably obtained from the work gloves 3. Can be separated and recovered. A screen 10 made of punching metal or a lattice for regulating the size of the pulverized product is installed below the shearing pulverizer 23 so that the particle size of the pulverized product is 0.5 mm to 12 mm, preferably 2 mm to 7 mm. It is desirable to grind it. This is because if the particle size of the pulverized product is 0.5 mm or more and 12 mm or less, the problem that the fiber component is accumulated on the screen and the pulverization efficiency is remarkably reduced is less likely to occur. This is because separation of dust-like waste is improved. Among them, it is more preferable to pulverize to 2 mm or more and 7 mm or less because the separability of the cotton-like dust composed of the resin pulverized product and the fiber component is good and the pulverization efficiency is high. Adjustment of the particle size of the pulverized product is achieved by selecting the size of the opening of the screen 10 installed in the pulverizer. As in the case of the swing hammer crusher 1, the shape of each opening of the screen 10 is most commonly a circle, but is not particularly limited, and may be an ellipse, a rectangle, or any other shape.
Further, the pulverization in the first pulverization process of the working glove 3 by the swing hammer crusher 1 and the second pulverization process by the shearing type pulverizer 23 is sequentially performed so that the particle size of the pulverized product of the work glove 3 becomes finer. It is preferable to select and pulverize the screen 10 to improve the separability of cotton-like dust composed of fiber components.

In recycling the work gloves 3 of the present invention, a known wind separator can be used as the wind separator used in the first wind separation process and the second wind separation process. Most of the wind separators are used by applying a dry-type device having a classification device mechanism. For example, as described in the section of the air classifier described in Nikkan Kogyo Co., Ltd. “Powder Equipment / Device Handbook”, it is classified into three categories: gravity classification, inertia classification, and centrifugal classification according to the mechanism of the classification apparatus. Has been. Gravity classification includes horizontal flow type, vertical flow type, and zigzag type. Inertia classification includes linear type, curved type, and louver type. Centrifugal classification includes cyclone and fanton gelen. , Clacyclon, dispersion, separator, and microplex, and a centrifugal classifier with rotating blades is also shown as a centrifugal classifier. Among these, it is preferable to use the dust separation device 16 shown in Patent Document 2 or Patent Document 3 that is positioned as one type of weight classification because of high separation accuracy of fiber components. Although two dust separators 16 and 16 are used here, one dust separator 16 may be shared.
The aforementioned dust separation device 16 is a wind power separator developed for the purpose of separating a mixture of crushing chips and cotton-like trash that can be produced by crushing waste such as automobile interior materials. As shown in the longitudinal sectional view of the dust separation device 16 in FIG. 6, the dust separation device 16 supplies the air to the funnel portion in which the vacuum suction port 26 is provided in the upper portion of the vertical cylindrical body portion and the lower portion is formed in a funnel shape. A circular plate 27 is horizontally supported in a separation tower provided with a port 30 so that a ventilation gap 29 exists between the circular plate 27 and the inner wall of the separation tower. Two kinds of pulverized products 6 and 14 of the work glove 3 made of a mixture of a fiber component forming the knitted glove 3a and a resin component made of the resin coating layer 3b are carried in. Then, when the pulverized material 14 out of the two pulverized materials is carried in, the light cotton-like fiber component 22 is further dispersed, and the cotton-like fiber component 22 enters from the air supply port 30 and enters the separation tower. It rides on the rising air flow and is sucked into the vacuum suction port 26 and sent to the cyclone separator 19 via the pipe 15 and the blower 18 as shown in FIGS. Further, the pulverized product 6 containing the coating resin component as a main component in the pulverized products 6 and 14 is heavy and falls from the peripheral edge of the circular plate 27 without flying up, slides down the inner wall surface of the separation tower, and enters the separated pulverized product receiving tank 17. Dropped and recovered as pulverized product 6a. In this dust separation device 16, the circular plate 27 moves up and down by adjusting the circular plate support 28, and the size of the ventilation gap 29 can be adjusted. The optimum air gap 29 can be set according to the size, specific gravity, or the properties of the cotton-like fiber component 22 constituting one of the pulverized products 14 so that the separation of both can be easily performed. That is, by appropriately setting the air gap 29, the speed of the air flow rising in the dust separation device can be easily adjusted, so that the circular shape while observing the state of the resin pulverized product 6 that has fallen into the separated pulverized product recovery receiving tank 17 By adjusting the height of the plate 27, a favorable separation state is always obtained. Furthermore, the dust separation device 16 is suitable for separating the flocculent wastes continuously and efficiently at a separation level where flocculent waste consisting of a slight fiber component is mixed in the resin pulverized product. Wind separator. Moreover, (H) and (D) shown in FIG. 6 are the vertical cylindrical height (H) and lateral diameter (D) of the straight body part excluding the funnel part at the bottom of the dust separator 16. It is. Reference numeral 20 shown in FIG. 4 denotes an air discharge port.

As shown in FIG. 5, the dust separation device 16 has the shearing pulverization through an air transport pipe 31 connected to the other end of the transport blower 12 having one end connected to the intake air duct 4, as in FIG. 4. The pulverized material pulverized by the machine 23 is transported, and the air volume discharged from the vacuum suction port 26 by the blower 18 with respect to the supplied air volume is as shown in FIG. The pulverized product 6, 14 carried into the center of the circular plate 27 from the tip of the gas flows through the separation tower, and the coated resin pulverized product 6, which is a relatively heavy component, is provided around the circular plate 27. 29, and is discharged from the air replenishing port 30 below the dust separation device 16, while the base fiber, which is a relatively light component, that is, the cotton-like fiber component constituting the pulverized material 14 mainly composed of the fiber component. 22 is an air flow rising inside the separation tower Equivalent amount as discharged from the separation column upper vacuum suction port 29 and put or it is preferable to adjust a number slightly emissions.
As shown in FIG. 5, the shearing pulverizer 23 includes a fixed blade 24, a rotary blade 25 that is provided so as to face the fixed blade 24, and has a plurality of blade portions that can be driven and rotated. The pulverized material that has passed through the opening of the screen 10 is supplied to the dust separator 16 through the pulverized material recovery part 1b, the suction duct 4 (see FIG. 2), and the air transport pipe 31. It has become so.

  As one preferred embodiment of the present invention, an embodiment in which a first sieve sorting step is provided as shown in FIG. 9 will be described in detail. As shown in FIG. 9, waste materials of the work gloves 3 or defective products generated during the manufacture of the gloves or items discarded at the time of renewal are first pulverized by the swing hammer crusher (impact pulverizer) 1 in the first pulverization step. Then, after the fiber component 22 forming the knitted glove 3a is wind-separated by the dust separation device 16 in the first wind separation process, it is sieve-sorted in the first sieve sorting process in which the foreign matter adhering to the surface is removed ( As shown in FIG. 5, in the second pulverization step, the pulverized material 6b is separated by the shearing pulverizer 23 to separate the cotton-like dust composed of the fiber component 22. By setting it as such a system, the separation efficiency of a fiber component is improved. As shown in FIGS. 7 and 9, the separation efficiency is slightly reduced, but the pulverization process may be performed by the shearing pulverizer 23 in the second pulverization step without performing the sieving selection in the first sieving selection step. The pulverized material introduced into the shearing pulverizer 23 to which the suction air duct 4 is connected and pulverized has a fiber component 22b that has become cotton-like in the second wind separation process, and the fiber component 22b via the cyclone separator 19. It is collected in the collection bag 21. At this time, when the fiber forming the knitted glove 3a is made of cotton, the separation of the cotton-like product composed of the vinyl chloride resin pulverized product and the fiber component is high, so that the wind separation is good. Then, the recovered (coating resin) pulverized product 6b is screened in the second sieving selection step as shown in FIG. 8 to obtain the coated resin pulverized product 6d.

  The (coating resin) pulverized product 6a of the work gloves 3 collected after passing through the first pulverization step and the first wind separation step is operated by the vibration sieve 33 in the first sieving selection step as shown in FIG. Foreign matter such as metal powder, metal pieces, oil, and dust attached to the surface of the protective glove 3 is separated and removed. Among these foreign substances, aluminum metal powder and metal pieces are preferable because they are removed by shaking under a vibrating sieve. In addition, the pulverized product 6a is rubbed with the pulverized product adjacent to each other on the vibration sieve, so that the foreign matter made of oil is adsorbed to the fiber component and separated from the vinyl chloride resin. In this case, the material constituting the fiber hand is preferably cotton and can absorb oil. Further, during this time, the cotton-like material that adheres to the outer surface of the pulverized product and cannot be removed by the separation tower is further removed by rubbing the pulverized products adjacent to each other. The mesh opening of the sieve mesh 40 used in the first sieve sorting step is preferably 0.5 mm or more and 5 mm or less. If the thickness is 0.5 mm or more and 5 mm or less, the foreign matter attached to the work gloves 3 is not easily mixed into the coated resin pulverized product 6a and is well separated. Further, when the fiber component is separated and removed in the first wind force separation step and the second wind force separation step, the foreign matter becomes a crushed resin resin (6a, 6b) due to entanglement or adhesion to the fiber component (22a, 22b). As a result, the separation efficiency of the foreign matter is improved.

Examples of the vibration sieve used in the first sieve selection step include in-plane motion type vibration sieves such as a circular vibration sieve, a resonance type vibration sieve, a vibration motor type vibration sieve, an electromagnetic vibration sieve, and a gyro shifter. Among these, the circular vibrating sieve is preferable from the viewpoints of workability and separability. Specifically, as shown in FIG. 7, the crushed material 6 a (coating resin) collected in the first wind separation process is connected to the circular vibrating sieve 33 by connecting the transport blower 5 and the cyclone separator 19 with a pipe K. It is transported and retained on the sieve mesh 40, and the vibrating spring 34 is driven to vibrate so that the adhered foreign matter passes through the lower part of the sieve mesh 40, and the coated resin pulverized product 6c is collected in the separated pulverized product collection receiving tank 17A. The adhered foreign matter 35 that has passed through the sieve mesh 40 can be well separated by the recovery tank 17B. In addition, the vibration sieve 37 used in the second sieve selection step shown in FIG. 8 is also in-plane with the circular vibration sieve, the resonance vibration sieve, the vibration motor vibration sieve, the electromagnetic vibration sieve, the gyro shifter, and the like. A kinematic vibration sieve can be used, but a slender pulverized product stands up and passes through the sieve by separating the object to be processed with the sieve while moving in a horizontal direction using a vibrating sieve that vibrates in a horizontal swiveling motion without longitudinal vibration. This can be suppressed and the separation accuracy can be improved. Further, as disclosed in Patent Document 3 and shown in FIG. 8, a pair of vibration sieves 37 that vibrate in a horizontal swivel motion are connected to a lower end of the air supply port 30 of the dust separation device 16 so that one end of the vibration sieve 37 can swing freely. The other ends of the support arms 39, 39 are connected to each other, and the crushed resin crushed material 6b is treated on the sieve mesh 40 while moving the object to be treated in the horizontal direction. Is collected in the sieve passing material collection box 48, and the suction hood 50 is provided on the sieve to suck the fiber component 22d and to accurately collect the resin coating layer pulverized product 6d separated from the fiber component 22d. It is also preferable to do.
The pulverized product 6b dropped and recovered from the air supply port 30 of the dust separator 16 falls on the vibrating sieve 37 installed at the lower part of the dust separator 16, and the sieve mesh 40 is pasted on the bottom to open the outlet side E. The crushed material 6b is sequentially sent to the outlet side by staying on the box frame 38 and vibrating with the box frame 38 in which the sieve mesh 40 is installed in the horizontal direction. The box frame 38 is arranged so that the belt 42 is driven by a drive shaft of a motor 41 via a large-diameter pulley 43 and is substantially parallel to the drive shaft, a small-diameter pulley 45 at one end and an L-shape at the other end. A crankshaft 44 provided with a bent portion of the mold is attached and vibrated in the horizontal direction by driving the motor 41. During this period, the pulverized product 6d smaller than the mesh opening of the sieve mesh 40 is meshed in this manner. The crushed product 6e larger than the mesh opening of the sieve mesh 40 is collected on the sieve mesh 40 and sent to the outlet side E, and is suctioned upward. In the air flow sucked from the upper side by the hood 50, light cotton-like dusts and fiber components 22d rise and are sucked by the suction port 46 of the suction hood 50, while the pulverized material is heavy and does not soar, so that the outlet side E It is discharged. By this operation, the pulverized product 6e of the resin coating layer 3b discharged from the outlet side E and collected in the residue collection box 49 on the sieve removes the cotton-like fiber component 22d. If the recovered pulverized product 6e is returned to the second pulverization step and processed again, the recovery rate can be improved.

  The distance between the suction port 46 and the sieve mesh 40 of the suction hood 50 or the mesh size of the sieve mesh 40 is such that the resin component and the fiber component are efficiently separated by the pulverized material of the work gloves 3. Thus, it is set to a predetermined amount as appropriate. The suction port portion 46 moves up and down, and the interval between the suction hood 50 and the sieve mesh 40 is adjusted by the suction port height adjusting bolt 51 so that it can be freely changed. And the cotton-like fiber component 22b are set at predetermined positions so as to be normally separated. Moreover, it is preferable to adjust the opening of the sieve mesh 40 in accordance with the opening diameter of the screen 10 of the shearing type pulverizer 23 used in the second pulverization step in consideration of the size of the coated resin pulverized product 6b. . Furthermore, the vibration sieve 37 is generally used in combination with the dust separator 16 in series. However, depending on the state of the pulverized product, the vibration sieve 37 is used as a separate process or configured by combining a plurality of sieves in multiple stages. It is also possible.

  Further, as shown in FIG. 8, the second sieve screening step screens and collects the pulverized product 6d that has passed through the sieve, whereby the pulverized product whose particle size has been adjusted can be recovered. Is also separated and removed, so that the separation accuracy can be improved. The opening of the sieve is 0.5 mm or more and 12 mm or less, preferably 1 mm or more and 7 mm or less. If the sieve opening is 0.5 mm or more and 12 mm or less, it is difficult to mix the fiber component into the resin pulverized product collected by screening and the pulverized product separated with high accuracy can be recovered, which is preferable. Moreover, if it is 1 mm or more and 7 mm or less, since the grinding | pulverization for ensuring a separation precision can be performed efficiently, it is more preferable. In addition, since the resin pulverized product and fiber fragments having a large particle size remain on the sieve by sorting with a sieve, the resin is again returned to the second grinding step, and subjected to shear pulverization, wind separation, and sieve sorting. The recovery rate of the pulverized product can be improved.

  Further, in order to improve the separation accuracy between the coated resin pulverized product 6 and the fiber component 22, the pulverized product 6 b which is sheared and pulverized by the shear pulverizer 23 and separated by wind and collected (coating resin) is screened and collected by the vibrating sieve 37. It is more effective if the pulverized product 6d is further subjected to shearing and pulverization and repeated wind separation and sieving using a dust separator. When the coating resin component of the working glove 3 is repeatedly pulverized by the shear pulverizer 23, the opening diameter of the screen 10 and the mesh opening of the sieve mesh 40 installed in the shear pulverizer 23 are gradually changed to smaller ones. The resin component can be retained on the screen 10 of the shear pulverizer 23, and the resin pulverized product is repeatedly subjected to shearing by the rotary blade 25 constituting the shearing pulverizer 23 shown in FIG. Separation accuracy can be improved by separating the fiber components.

Further, in order to further improve the separation accuracy between the coated resin pulverized product 6 and the fiber component 22, for example, a plurality of impact-type pulverizers and a single shear-type pulverizer are provided. On the contrary, one impact type pulverizer and a plurality of shear type pulverizers are provided. In this case, a wind separator that separates the pulverized material crushed by each pulverizer is provided. Further, as shown in FIGS. 10 and 11, a plurality of impact pulverizers and shear pulverizers (two in the figure, but three or more) may be provided. In FIG. 10, the work gloves are pulverized by two impact pulverizers, then the wind force is separated by a wind separator, and the pulverized product separated by the wind force is pulverized by two shearing pulverizers. The wind is separated by a wind separator. In FIG. 11, two wind separators are provided for each of the impact type pulverizer and the shear type pulverizer, for a total of four units. The pulverized material separated by wind with the second wind separator is crushed by the shearing pulverizer and separated by the last (second) wind separator to complete the separation work. Is.
When only one pulverizer is provided as described above, the recovery efficiency can be improved without lowering the separation accuracy (without dropping) compared to the case where a plurality of both pulverizers are provided. However, it is particularly preferable that one impact type pulverizer and a plurality of shear type pulverizers are provided, which is advantageous in terms of separation accuracy and recovery efficiency.

  By the way, each process is connected to the suction air duct 4 so that the dust composed of dust and fiber components generated when the work gloves 3 are crushed, separated by wind force, and screened is not contaminated in the work environment. It is preferable that the pulverized material of the work gloves 3 is transported and processed by a closed system. Further, it is more preferable that the exhausted air is provided with a dust collecting device and collects dust through the dust collecting device. In addition, the coarsely pulverized product of the work gloves 3 and the pulverized product of the work gloves 3 pulverized by the shearing type pulverizer 23 may be transported using a belt conveyor or pneumatically transported to the next step. Continuous processing is possible. Of the above two transportation methods, the method using a belt conveyor is advantageous in terms of equipment costs. On the other hand, when pneumatic transportation is performed, a cyclone separator is installed above the crusher inlet and the crusher is treated. This is achieved by configuring the transportation line so that the goods can be introduced.

A manufacturing method for manufacturing the working gloves 3 coated with the vinyl chloride resin in the paste sol dip coating method will be described.
For example, the work gloves 3 are formed by forming a vinyl chloride paste immersion film 3b by applying or dipping a vinyl chloride paste on a knitted glove 3a body (referred to as a fiber hand) covered with a hand mold at 80 to 150 ° C. The resin coating layer 3b is formed by heating and gelation. The vinyl chloride resin-coated work gloves 3 are usually formed by laminating a vinyl chloride paste coating layer 3b by applying or dipping a vinyl chloride paste a plurality of times.
Moreover, it is preferable to mix | blend and use the vinyl chloride-type paste resin for forming the resin coating layer 3b in the work glove 3 by the ratio shown below, and also mix | blended (a)-(d). Select additives such as diluents, thickeners, hygroscopic agents, antioxidants, lubricants, processability improvers, UV absorbers, antifoaming agents (antifoaming agents), and surfactants for vinyl chloride resin pastes It can also be added.
(A) Vinyl chloride paste resin 100 parts by weight (b) Plasticizer 50 to 150 parts by weight (c) Stabilizer 1 to 10 parts by weight (d) Pigment 1 to 10 parts by weight As the vinyl chloride paste resin, It contains vinyl chloride copolymers such as vinyl chloride resin, vinyl chloride-vinyl acetate copolymer, vinyl chloride-ethylene-vinyl acetate copolymer.
The plasticizer used here is dibutyl phthalate, dihexyl phthalate, di-2-ethylhexyl phthalate (DOP), di-isononyl phthalate, phosphate ester, chlorinated paraffin, trimellitic ester, epoxidized soybean oil However, it is preferable from the viewpoint of workability that di-2-ethylhexyl phthalate (DOP) is used.
In addition, as the stabilizer, calcium stearate, Ca-Zn stearate, Ba-Zn stearate, Pb-based metal soap, and organotin stabilizer are known, but Ca-Zn stearate is preferably used. Examples of the pigment include titanium oxide, aluminum metal powder, aluminum foil powder, and mica.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the examples.
As a material, use a used vinyl chloride resin-coated work glove (gloves made of cotton knitted gloves coated with vinyl chloride resin; fiber content 22.0%) with metal foreign matter or oil stains on the surface. 5 kg of gloves cut into a width were used. This is pulverized by a swing hammer crusher 1 (Barutsu type pulverizer manufactured by Onoe Machinery Co., Ltd.) provided with a screen 10 made of punching metal having an opening diameter of 10 mm, and the pulverized material falls and accumulates through the screen 10. 1 A suction air duct 4 is connected to the lower part, and the pulverized material is supplied to a dust separator 16 (straight drum portion H: 700 mm, straight drum portion diameter D: 900 mm) for wind separation and separation of the dust separator 16. 3.88 kg of the coated resin pulverized material dropped and collected from the bottom of the tower was collected in a vat. At the same time, the fiber component sucked by the blower from the upper vacuum suction port of the dust separator 16 recovered 1 kg of the cotton-like fiber component in the fiber component recovery bag 21 installed at the lower part of the cyclone separator 19 (see FIG. 4). Next, the coated resin pulverized product 6a recovered from the lower part of the separation device 16 is conveyed to a circular vibrating sieve 33 (see FIG. 7), treated with a sieve having an opening of 2 mm, and then the coated resin pulverized product 6c on the sieve. Is put into a uniaxial shearing type pulverizer 23 (FS-1, see FIG. 5) made by Sanriki Seisakusho, which is provided with a screen made of a punching metal having an opening diameter of 3 mm, and pulverized material passes through the screen 10 and falls. The suction air duct 4 is connected to the lower part of the shearing pulverizer 23 to be accumulated, and the pulverized product is supplied to the dust separation device 16 (straight drum portion H: 700 mm, straight drum portion diameter D: 900 mm) to separate the wind force, 3.50 kg of the coated resin pulverized product 6b dropped and collected from the lower part of the separation tower of the dust separation device 16 was collected in a vat. At the same time, the fiber component sucked by the blower from the upper vacuum suction port of the dust separator 16 recovered 0.25 kg cotton-like fiber component 22b in the fiber component recovery bag 21 installed at the lower part of the cyclone separator 19 (see FIG. 5). ). Next, the coated resin pulverized product 6b collected from the lower part of the separation device 16 is treated with a vibrating sieve 37 provided with a 3 mm sieve, and 250 g is placed on the sieve, and (coated resin) crushed product 6d is placed under the sieve. 3.25 Kg (recovery rate 65%) was recovered (see FIG. 8). The recovered (coating resin) pulverized product 6d was not mixed with metal foreign matters such as aluminum metal powder, and no adhesion of oil was observed. The recovered coated resin pulverized product 6d was dissolved in THF for 24 hours to make a 1% solution, filtered through a 200 mesh wire net, and dried at 100 ° C. for 1 hour to calculate the fibers in the recovered coated resin pulverized product 6d. The content was 0.53%. Moreover, the resin component containing the foreign material which consists of about 7-g aluminum metal powder was collect | recovered from the sieve under the circular vibration sieve.

  As a material, defective process of gloves for vinyl chloride resin-coated work (gloves with cotton knitted gloves covered with vinyl chloride resin) (no metal foreign matter or oil stains on the surface of the gloves; fiber content 22 0%) and 5 Kg was used without cutting. The same treatment as in Example 1 was performed, and 3.48 kg of the coated resin pulverized product 6b was recovered in a vat. Next, the coated resin pulverized product 6b recovered from the lower part of the separating device 16 is a vibrating sieve having a suction duct 47 installed at the upper part of the vibrating sieve outlet side as shown in FIG. The fiber component on the sieve was removed by suction, and 235 g of the sieve resin was recovered on the sieve, and 3.20 Kg of the coated resin pulverized product 6d was recovered under the sieve (64% recovery rate). The fiber content in the recovered coated resin pulverized product 6d obtained from the recovered coated resin pulverized product 6d in the same manner as in Example 1 was 0.43%. Moreover, about 10 g of resin components were recovered from the bottom of the circular vibration sieve.

  As in Example 1, the material used was a used vinyl chloride resin-coated work glove with metal foreign matter or oil stains on the surface (glove having a cotton knitted glove coated with vinyl chloride resin; fiber content 22. 0 kg) was cut into 5 cm width and 5 kg was used. This is pulverized by a swing hammer crusher 1 (Barutsu-type pulverizer manufactured by Onoe Machinery Co., Ltd.) provided with a screen 10 made of punching metal having an opening diameter of 8 mm, and the pulverized product falls and accumulates through the screen 10. 1 A suction air duct 4 is connected to the lower part, and the pulverized material is supplied to a dust separator 16 (straight drum portion H: 700 mm, straight drum portion diameter D: 900 mm) for wind separation and separation of the dust separator 16. 3.93 kg of the coated resin pulverized material dropped and collected from the bottom of the tower was collected in a vat. At the same time, the fiber component sucked by the blower from the upper vacuum suction port of the dust separation device 16 was recovered by placing a fiber component recovery bag 21 under the cyclone separator 19 to recover 0.78 kg cotton-like fiber component. Next, the coated resin pulverized product 6a recovered from the lower part of the separation device 16 is treated with a vibration sieve provided with a sieve having a mesh opening of 2 mm, and a resin component containing foreign matter consisting of about 15 g of metal powder is recovered under the sieve. It was. Next, the coated resin pulverized product 6c on the sieve is crushed by introducing it into a uniaxial shearing pulverizer 23 (FS-1) manufactured by Sanriki Seisakusho, which is provided with a screen made of a punching metal having an opening diameter of 3 mm. The suction air duct 4 is connected to the lower part of the shearing pulverizer 23 through which the pulverized material drops and accumulates, and the pulverized material is supplied to the dust separator 16 (straight barrel portion H: 700 mm, straight barrel portion diameter D: 900 mm). In addition to wind separation, 3.62 kg of the coated resin pulverized product 6b dropped and collected from the lower part of the separation tower of the dust separation device 16 was collected in a bat. At the same time, the fiber component sucked by the blower from the upper vacuum suction port of the dust separation device 16 was installed in the lower part of the cyclone separator 19 to collect the fiber component 22b of 0.29 Kg. Next, a vibrating sieve 37 having a 3 mm mesh sieve is installed at the lower part of the separating apparatus 16, and the coated resin pulverized product 6 b dropped and collected from the lower part of the separating apparatus 16 is processed. Under the sieve, 3.22 kg of the coated resin pulverized product 6d was recovered (recovery rate: 64%). In the recovered coated resin pulverized product 6d, no foreign matter made of aluminum metal powder was observed. Further, the fiber content in the recovered coated resin pulverized product 6d obtained in the same manner as in Example 1 for the recovered coated resin pulverized product 6d was 0.52%.

As a material, a process defect product of vinyl chloride resin-coated work gloves (a cotton knitted glove coated with a vinyl chloride resin) has no metallic foreign matter or oil stains on the surface of the glove; fiber content 22.0%) and 5 kg of gloves cut to a width of 5 cm were used. This is pulverized by a swing hammer crusher 1 (baltz-type pulverizer manufactured by Onoe Machinery Co., Ltd.) provided with a screen made of punched metal having an opening diameter of 10 mm, and the pulverized material drops and accumulates through the screen 10. The suction air duct 4 was connected to the lower part, and the pulverized product was quantitatively collected in the lower part of the cyclone separator 19. Next, the pulverized product was supplied to a horizontal wind power sorter (Nippon Koki Co., Ltd. AN-500 type) 52 shown in FIG. The pulverized material is fed through the vibratory feeder 55 from the inlet 53 of the horizontal wind power sorter (Nippon Koki Co., Ltd. AN-500)
Is driven and supplied, and the rotational speed of the sirocco fan 56 is controlled to adjust the air volume to separate the wind force. From the discharge port 54A and the discharge port 54B, 4.12 kg of pulverized coated resin pulverized product, cotton fiber 0.73 kg of finely pulverized coating resin pulverized material containing a large amount of components was recovered in the receiving tank 57A and receiving tank 57B. Next, the coated resin pulverized material collected in the receiving tank 57A from the discharge port 54A closest to the supply port 53 is a uniaxial shear type pulverizer 23 (manufactured by Sanriki Seisakusho 23) provided with a screen 10 made of punching metal having an opening diameter of 3 mm. The suction air duct 4 is connected to the lower part of the shearing type pulverizer 23 where the pulverized material drops and accumulates after passing through the screen 10 and pulverized, and the pulverized material is quantitatively measured at the lower part of the cyclone separator 19. Recovered. Furthermore, the pulverized product is supplied to a horizontal wind power sorter (Nippon Koki Co., Ltd. AN-500 type) shown in FIG. .39 Kg, 0.61 Kg of finely pulverized coating resin pulverized product containing a large amount of cotton-like fiber component was recovered. Next, the coated resin pulverized material recovered from the discharge port 53A of the horizontal wind separator is treated with a vibrating sieve provided with a 3 mm sieve, and 1.20 Kg on the sieve and 2.19 Kg under the sieve. The resin pulverized product (recovery rate: 43.8%) was recovered. The fiber content in the recovered coated resin pulverized product obtained in the same manner as in Example 1 for the coated resin pulverized product recovered from the outlet 53A was 3.15%.
(Comparative Example 1)
As a material, use a used vinyl chloride resin-coated work glove (gloves made of cotton knitted gloves coated with vinyl chloride resin; fiber content 22.0%) with metal foreign matter or oil stains on the surface. 5 kg of gloves cut into a width were used. This is pulverized by a swing hammer crusher 1 (Barutsu type pulverizer manufactured by Onoe Machinery Co., Ltd.) provided with a screen 10 made of punching metal having an opening diameter of 10 mm, and the pulverized material falls and accumulates through the screen 10. The suction air duct 4 was connected to the lower part of 1 and the pulverized material was quantitatively collected in the lower part of the cyclone separator 19. Next, it is put into a uniaxial shearing pulverizer 23 (FS-1) manufactured by Sanriki Seisakusho (FS-1) provided with a screen 10 made of a punching metal having an opening diameter of 3 mm and pulverized. The suction air duct 4 was connected to the lower part of the shearing pulverizer 23, and the pulverized product was quantitatively collected in the lower part of the cyclone separator 19. The recovered resin pulverized product was treated with a vibrating sieve provided with a sieve having an aperture of 3 mm. As a result, 2.63 Kg on the sieve and 2.18 Kg of the coated resin crushed under the sieve (recovery rate 43.6%) It was collected. In the recovered coated resin pulverized product, mixing of foreign substances of aluminum metal powder was recognized, and the fiber content in the recovered coated resin pulverized product obtained in the same manner as in Example 1 was determined. It was 4.33%, and mixing of the cotton-like fiber component was recognized in the recovered vinyl chloride-coated resin component, and the separation accuracy was poor. Moreover, the time required for the pulverization by the shearing pulverizer 23 was more than twice that of Example 1, resulting in a decrease in efficiency.
(Comparative Example 2)
As a material, use a used vinyl chloride resin-coated work glove (gloves made of cotton knitted gloves coated with vinyl chloride resin; fiber content 22.0%) with metal foreign matter or oil stains on the surface. 5 kg of gloves cut into a width were used. In the same manner as in Example 1, pulverized material was pulverized by a swing hammer crusher 1 (Barutsu type pulverizer manufactured by Onoe Machinery Co., Ltd.) provided with a screen 10 made of punching metal having an opening diameter of 5 mm. The air duct 4 for suction is connected to the lower part of the swing hammer crusher 1 that collects and drops, and the pulverized material is supplied to the dust separation device 16 (straight barrel portion H: 700 mm, straight barrel portion diameter D: 900 mm) to separate the wind force, The coated resin pulverized product 4.11 kg dropped and collected from the lower part of the separation tower of the dust separator 16 was collected in a vat. At the same time, the fiber component sucked by the blower from the upper vacuum suction port of the dust separation device 16 was placed in the lower part of the cyclone separator 19 to collect 275 g of the cotton-like fiber component. Next, the coated resin pulverized product 6a recovered from the lower part of the separation device 16 is treated with a vibration sieve provided with a sieve having an opening of 5 mm, and 1.47 kg is applied on the sieve and 2 crushed resin resin 6d is applied on the sieve. .64 Kg (recovery rate 52.8%) was recovered. The fiber content in the recovered coated resin pulverized product obtained from the recovered coated resin pulverized product in the same manner as in Example 1 was 5.57%, and the fiber component adhered to the recovered vinyl chloride coated resin component. Many things were mixed, and the separation accuracy was poor.
(Comparative Example 3)
As a material, used vinyl chloride resin-coated work gloves (gloves with cotton chloride knitted gloves coated with vinyl chloride resin; fiber content 22.0%) with metal foreign matter or oil stains on the surface were used. In the same manner as in Example 1, the pulverized material falls through the screen 10 after being pulverized by a swing hammer crusher 1 (Barutsu pulverizer manufactured by Onoe Machinery Co., Ltd.) provided with a screen 10 made of punching metal having an opening diameter of 10 mm. The suction air duct 4 is connected to the lower part of the swing hammer crusher 1 to be accumulated, and the pulverized material is supplied to the dust separation device 16 (straight drum portion H: 700 mm, straight drum portion diameter D: 900 mm) to separate the wind force and dust. The coated resin pulverized product 3.88 Kg (recovery rate 77.5%) dropped and collected from the lower part of the separation tower of the separation device 16 was collected in a vat. At the same time, the fiber component sucked by the blower from the upper vacuum suction port of the dust separation device 16 was recovered by collecting 1 kg of the cotton-like fiber component by installing the fiber component recovery bag 21 at the lower part of the cyclone separator 19. The coated resin pulverized product recovered from the lower part of the separation tower of the dust separator 16 had a fiber content of 9.15% in the recovered coated resin pulverized product obtained in the same manner as in Example 1, and the recovered vinyl chloride coating was recovered. Many resin components were mixed in the resin component, and the separation accuracy was poor.
(Comparative Example 4)
The material used is a used vinyl chloride resin-coated work glove (gloves with a cotton knitted glove coated with vinyl chloride resin; fiber content 22.0%) with metal foreign matter and oil stains on the surface. Is put into a uniaxial shearing type pulverizer 23 (FS-1) manufactured by Sanriki Seisakusho, which has a screen 10 made of punching metal having an opening diameter of 10 mm, and pulverized. The suction air duct 4 is connected to the lower part of the shearing pulverizer 23, and the pulverized material is supplied to the dust separation device 16 (straight drum portion H: 700 mm, straight drum portion diameter D: 900 mm) for wind separation and dust separation. The coated resin pulverized product 6b dropped and collected from the lower part of the separation tower of the apparatus 16 was recovered in a bat by 4.81 kg. At the same time, the fiber component sucked by the blower from the upper vacuum suction port of the dust separator 16 recovered 0.14 kg of the cotton-like fiber component 22b in the fiber component recovery bag 21 installed at the lower part of the cyclone separator 19. Next, the swing hammer crusher 1 (Barutsu type pulverizer manufactured by Onoe Machinery Co., Ltd.) provided with a screen 10 made of punching metal having an opening diameter of 3 mm, and the swing hammer crusher 1 (Barutsu type pulverizer manufactured by Onoe Machinery Co., Ltd.) in Example 1 was used. The suction air duct 4 is connected to the lower part of the swing hammer crusher 1 where the pulverized material drops and accumulates after passing through the screen 10, and the pulverized material is removed from the dust separator 16 by the suction air duct 4. (Direct barrel part H: 700 mm, straight trunk part diameter D: 900 mm) was separated by wind force, but the coated resin pulverized product dropped and collected from the lower part of the separation tower of the dust separator 16 and collected manually was 0.22 kg. Met. At the same time, the fiber component sucked by the blower from the upper vacuum suction port of the dust separator 16 recovered 0.18 kg of the cotton-like fiber component in the fiber component recovery bag 21 installed at the lower part of the cyclone separator 19. Since the amount of the recovered material recovered from the lower part of the separation tower and the upper vacuum suction port of the dust separator 16 was too small with respect to the pulverized material 6b charged into the swing hammer crusher 1, the swing hammer crusher 1 was stopped and the swing hammer was stopped. When the inside of the crusher 1 was confirmed, 3.80 kg (recovery rate: 76.0%) remained on the screen 10 made of punched metal having an opening diameter of 3 mm, and the resin temperature was high, being 70 ° C. or higher. It was. Further, the fiber content in the resin remaining inside the swing hammer crusher 1 obtained in the same manner as in Example 1 was 9.14%.

 The present invention relates to a waste product of work gloves 3 in which a fiber component made of knitted gloves 3a is coated with a vinyl chloride resin, and a recycling method and a recycling apparatus for scraps and waste materials generated in the manufacturing process. Separates and removes resin-based resin components and fiber components, and also separates and collects pulverized material from which foreign materials such as metal powder, metal pieces, oil, and dust attached to the surface of work gloves are removed, and recycles it as a recycled material. Enables resource recycling. Further, the coated resin pulverized product made of the vinyl chloride resin recovered by the method of the present invention is effective as a raw material for flooring materials such as a sound insulating material, a sound insulating sheet, a floor mat, and a cushion mat because of high separation accuracy.

It is a perspective view which shows the structure of the work glove which is a process target of this invention. It is a schematic explanatory drawing which shows the structure of the suction air duct connected to the discharge side lower part of an impact-type crusher. It is a block diagram which shows the 1st most basic operation process for grind | pulverizing the working glove which is a process target of this invention, wind-separating, and isolate | separating and collect | recovering a fiber component and a vinyl chloride resin component. It is explanatory drawing which shows the specific structure for grind | pulverizing and wind-separating the working glove which is the process target of this invention by a 1st grinding | pulverization process and a 1st wind separation process. A specific configuration for grinding and wind power in the second pulverization step and the second wind separation step after the work gloves to be treated according to the present invention are treated in the first pulverization step and the first wind separation step. It is explanatory drawing which shows. It is an expanded longitudinal cross-sectional view which shows an example of the separation tower of the dust separation apparatus employ | adopted for the grinding | pulverization separation process of the working glove of this invention. A method for removing foreign matter made of metal powder such as aluminum adhering to the work gloves after the work gloves to be treated according to the present invention are ground and wind separated in the first grinding process and the first wind separation process. It is explanatory drawing which shows the specific structure of these. It is explanatory drawing which shows the fundamental structure of the method of carrying out the sieve selection in a 2nd sieve selection process, after grind | pulverizing and separating the working gloves which are the process target of this invention. It is a block diagram which shows the 2nd operation | work process for grind | pulverizing the working gloves which are the process target of this invention, and carrying out wind separation, and isolate | separating and collect | recovering a fiber component and a vinyl chloride-type resin component. It is a block diagram which shows the 3rd operation | work process for grind | pulverizing the working gloves which are the process target of this invention, and carrying out wind separation, and isolate | separating and collect | recovering a fiber component and a vinyl chloride-type resin component. It is a block diagram which shows the 4th operation | work process for grind | pulverizing the working gloves which are the process target of this invention, and carrying out wind separation, and isolate | separating and collect | recovering a fiber component and a vinyl chloride-type resin component. It is a side view which shows the concept of the horizontal wind power sorter used for Example 4 of this invention.

Explanation of symbols

1 Swing hammer crusher (impact crusher)
1b Pulverized material recovery unit 2 Input port 3 Work gloves 3a Knitted gloves (textile hands)
3b Resin coating layer 4 Suction air duct 5 Transport blowers 6, 6a to 6e Pulverized product 7 Crusher inside 8 Rotating body 9 Hammer or rotary blade 10 Screen 11 Rotating shaft 12 Transport blower 13 Rotating pole 14 Pulverized product 15 Piping 16 Dust separation Apparatus 17A, B Collection tank 18 Blower 19 Cyclone separator 21 Fiber component collection bag 22 Fiber component 22a, 22b, 22d Fiber component 23 Shear type crusher 24 Fixed blade 25 Rotary blade 26 Vacuum suction port 27 Circular plate 28 Circular plate support 29 Ventilation gap 30 Air supply port 31 Pneumatic transport pipe 33 Circular vibration sieve 34 Vibration spring 35 Adhered foreign matter 37 Vibration sieve 38 Outlet side 39 Support arm 40 Sieve mesh 41 Motor 42 Belt 43 Large diameter pulley 44 Crankshaft 45 Small diameter pulley 46 Suction port Part 47 Suction duct 48 Screen passing material collection box 49 Residue collection on screen 50 suction hood 51 adjustment bolt 52 horizontal wind sorter 53 supply ports 53A outlet 54A, 54B outlet 55 vibration feeder 56 sirocco fan 57A, 57B tank E outlet or vibration sieve outlet H barrel K pipe

Claims (16)

A recycling system for separating and collecting a fiber component and a vinyl chloride resin component from a glove having a vinyl chloride resin coated on at least a part of the outer surface of a fiber hand,
An impact pulverizer equipped with a screen for regulating the size of pulverization of gloves, a separator for separating fiber components from the pulverized material pulverized by the impact pulverizer, and a fiber component by the separator In order to separate the pulverized material pulverized by the shearing pulverizer into a fiber component and a vinyl chloride resin component A recycling system for separating and recovering fiber components and vinyl chloride resin components from gloves.   The recycling system according to claim 1, wherein each of the two separators comprises a wind separator that separates the fiber component and the vinyl chloride resin component by wind power.   The recycling system according to claim 1 or 2, wherein a plurality of at least one of the impact pulverizer and the shear pulverizer are provided.   The recycling system according to claim 3, further comprising a wind separator for separating the pulverized material pulverized by each of the plurality of pulverizers.   The pulverized product that has been crushed by the shearing pulverizer and then separated and recovered by the separator or the wind power separator is retained on a sieve, and the fiber component adhering to the surface of the pulverized product is vinyl chloride-based. The recycling system according to any one of claims 1 to 4, further comprising a vibrating sieve that is separated from the resin component by scraping.   A vibrating sieve that retains the pulverized material that has been pulverized by the impact pulverizer and then separated and recovered by the separator or the wind power separator to scrape off foreign matter adhering to the surface of the pulverized material. The recycling system according to any one of claims 1 to 5, comprising:   The wind separator has a vacuum gap in the vertical cylindrical separation tower provided with a vacuum suction port in the upper part and an air supply port in the lower part, and a ventilation gap exists between the circular plate and the inner wall of the separation cylinder around it. The pulverized material pulverized by the shearing pulverizer by an air transport pipe is carried into the center of the circular plate, and the vinyl chloride resin component in the pulverized material is transferred to the center of the circular plate. 5. A dust separation device, wherein the dust separation device drops from the peripheral edge and enters a fiber component through an air supply port and ascends in an air flow rising in the separation tower and is sucked into a vacuum suction port. Or the recycling system of 5 or 6.   8. The swing hammer crusher type according to claim 1, wherein the impact pulverizer is a swing hammer crusher type in which a punching metal or a screen having a mesh opening of 4 mm or more and 25 mm or less is installed to regulate the size of pulverization. The recycling system described.   The shear type pulverizer is a shear type pulverizer in which a punching metal or a screen having a mesh opening of 0.5 mm or more and 12 mm or less is installed, which regulates the size of the pulverization. The recycling system described in the section.   The recycling system according to claim 5 or 6, wherein a sieve mesh of the vibration sieve is 0.5 mm or more and 12 mm or less.   The recycling according to claim 5 or 10, wherein a suction hood connected to a suction duct is provided on the sieve of the vibrating sieve and the fiber component and the dust component remaining on the sieve are separated by vacuum suction. system.   The recycling system according to any one of claims 1 to 11, wherein the fiber material constituting the fiber hand is cotton and can adsorb oil.   The recycling system according to any one of claims 1 to 12, wherein the foreign matter adhering to the glove includes at least one of metal powder, metal pieces, and oil.   The recycling system according to claim 6, wherein the vibrating screen that scrapes off foreign matter adhering to the surface of the pulverized material is a circular vibrating screen.   A separation and recovery method for separating and recovering a fiber component and a vinyl chloride resin component from a glove using the recycling system according to claim 1. A recycled vinyl chloride resin comprising a vinyl chloride resin component separated and collected from a glove by the separation and recovery method according to claim 15.

Images