JP2553807B2 - Method and device for collecting and granulating waste resin molded products - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for collecting and granulating waste resin moldings.

More specifically, as a field of application of the present invention, various resin molded products whose surfaces are covered with a resin coating film containing a cosmetic and / or protective resin material as a main component are treated. After crushing the resin molded product into a plurality of coarse particles to be processed, the resin coating film is separated and removed from each of the coarse particles to be processed, and recovered as a materialized resin material, And the method of granulating. In addition, if necessary, the materialized resin material is also sized and recovered / granulated as a resin material by a sized product within a predetermined particle size range, so that the material is collected / granulated. A method of molding the resin material as it is or molding it into pellets so that it can be reused. And, it relates to an apparatus for carrying out these methods.

BACKGROUND OF THE INVENTION In general, resin molded products formed by molding various resin materials such as natural resins or synthetic resins are used in a wide variety of applications such as automobiles, household electric appliances and daily necessities as the life is diversified. It is used in various types and in large quantities for
At present, the following various problems have been raised regarding the treatment after use in this type of resin molded product.

Most of the resin materials that make up the resin molded product have excellent water resistance and weather resistance and are resistant to decay, but they are incinerated in an incinerator for disposal, for example. At that time, it is well known that a large amount of harmful gas or smoke is generated, which is not preferable in the social environment. In addition, there is a disadvantage that the resin material melted during incineration may adhere to the inside of the furnace and damage the furnace itself. So, to avoid this disadvantage this
Even if this resin molded product is buried in the ground, it remains undecomposed for a long period of time, which is considered to be a cause of environmental damage.

On the other hand, with respect to this type of resin material, there is a tendency toward depletion in terms of resources year by year, and it has been requested and recognized that the resin material after use should be reused without being discarded. In addition, for resin molded products, it has been attempted to indicate the type of resin material used and to facilitate the recovery.

The resin molded product to be recovered for reuse is usually used for cosmetic purposes such as glazing, matting and coloring on the surface of the resin molded product. In many cases, a resin coating film for protection that further enhances wear resistance and weather resistance is applied. As an example, about 75% of the weight of an automobile is recycled, but most of it is metallic material, and the remaining about 25% is discarded as dust, of which about 30% by weight is plastic. ing.

For example, in a bumper member applied to various vehicles, a polyester urethane having a film thickness of about 15 μm to 30 μm is formed on the surface of a base member having a thickness of about 2.5 mm to 5 mm molded from a polypropylene base material. It is customary to apply a coating film such as a system.

The resin coating film formed on the surface of the resin molded product is formed by using resin materials having different types and characteristics with respect to the resin material used for molding the resin molded product. In general, the same as above, and the case of using resin materials of different colors as described above.
Therefore, when the resin materials having different types and characteristics and different colors are reused in the mixed state, the mechanical properties such as impact strength of the molded product obtained by the reuse can be obtained. Is significantly impaired,
The result is that the desired surface smoothness and color are also not obtained.

Therefore, from the above viewpoint, in the prior art,
Regarding the resin molded articles to be recovered, it is usually practiced to classify them into resin materials having the same type and the same characteristics, and then recover and reuse them.

[0010]

2. Description of the Related Art As conventional means, there have been proposed mechanical peeling and separating means by known shot blasting, crushing means such as a ball mill, and melt separation treatment with an organic solvent.

[0011]

However, the resin coating film formed on the surface of the resin molded product is comparatively thin and has a strong adhesive force and cannot be easily peeled off. It is difficult to adapt to peeling / separating means because various unfavorable obstacles such as low processing capacity are likely to occur. Further, for example, even if a crushing means such as a ball mill is used to separate and separate the crushing means, there is a drawback that the resin coating film to be peeled is melted by the frictional heat generated at the time of crushing and the peeling becomes impossible.

Further, in order to melt and separate resin materials having different types and characteristics from each other by using corresponding organic solvents, the polypropylene base material itself is altered, and the processing capacity is low, so that it is melted by heating. Since the processing equipment itself requires a large number of steps, it is not preferable from the economical point of view because it is large in size, and it requires a post-treatment of the step of neutralizing the used solvent, resulting in many difficulties. There are various problems.

On the other hand, in accordance with the peeling and removal of the resin coating film from each small piece to be treated with the resin material as described above, the resin material coated with the resin coating film or the powder material containing a simple resin material. For each small piece to be treated, etc., when each small piece to be treated is a small piece to be treated which is relatively hard, each small piece to be treated is crushed into a predetermined particle size range and is a relatively small piece to be treated. At this time, it may be necessary to granulate each small piece to be processed within a predetermined particle size range, and it is required to perform each of these processing operations by one processing apparatus. Due to such an event, there is currently no processing apparatus that can adapt to the request.

OBJECT The present invention was made mainly to solve the above-mentioned conventional problems, and the purpose thereof is to:
By means of relatively simple and easy means, for example, the resin coating product formed on the surface of the object to be treated is separated and removed, and then recovered and granulated as a materialized resin material, and If necessary, also collect and granulate this as a resin material sized within a predetermined particle size range,
It is an object of the present invention to provide a method and an apparatus capable of molding the collected and granulated resin material as it is or molding it into pellets.

[0015]

In order to achieve the above-mentioned object, the method according to the present invention is a method in which a resin molded product to be treated is crushed into a plurality of respective treated small pieces, and then each of these individual treated small pieces is processed. On the other hand, by applying a compressive impact force based on micro-vibration to crush, and removing the resin coating film separated from each small piece surface to be treated by this crushing action, a step of forming a materialized resin material, And a method of recovering and granulating a waste resin molded product including at least a step of melt-extruding the resin material through a screen plate under pressure, and further, a crushed recovered resin material with a resin coating film removed, respectively. At least including a step of polishing by applying impact grinding force to obtain a resin material whose surface is adjusted, and a step of melt extruding the resin material through a screen plate under pressure, or Recovered resin After charge re crushing process or upon re crushed, after aligning the re-crushed particle size below a predetermined particle size range, for each crushing pieces were polished by adding the impact frictional striking force , Collecting and granulating a waste resin molded product including at least a step of forming a resin material with a sized product within a predetermined particle size range and a step of melt-extruding the resin material through a screen plate under pressure. Is the way.

Further, the apparatus is provided with a pair of compression impact members having compression impact surfaces opposed to each other with a predetermined gap therebetween, and above each compression impact member, each of the crushed crushed members is provided. An input opening is formed to sequentially supply the small pieces to be processed, and at least one of the compression impact members, for example, a plurality of upper vibration generating means installed at a predetermined position on the outer peripheral surface of the outer compression impact member, Is configured so that it can be slightly vibrated with respect to the other, and an extrusion screw or a gear pump is provided in a chamber provided with a supply port for supplying each recovered resin material crushed by each compression impact member, and the chamber Equipped with a screen plate, and melt-presses each of the crushed resin materials to be recovered in the chamber by the rotation of the extrusion screw or gear pump through the screen plate. It is obtained by adapted to be recovered, granulated configuration Suyo. Further, the apparatus according to the present invention includes a stirring and feeding means for preventing or canceling the aggregation and tightening of the small pieces to be treated, including the charging opening between the compression impact surfaces, or only for the introduction part. It is arranged and configured.

Further, according to the present invention, on a plurality of rotation loci, on a fixed disk, which is located before and after or in the middle of the compression impact member, and whose central portion communicates with the supply / injection port of the recovered resin material. On the fixed side polishing and sizing means in which each fixing pin is sequentially implanted, and on the movable disk that is rotatably drivable facing the fixed disk, on a plurality of rotation paths different from each of the fixing pins. At the outer periphery of the combination of the movable side polishing and sizing means in which each movable pin is sequentially planted, and the fixed pin and each movable pin, in order to discharge the recovered resin material having a desired particle size or less in any desired manner. And a take-out means for taking out the resin material to be recovered having a desired grain size or more to the take-out portion, and the recovered resin material is provided between the fixed pin and the movable pin. Polished, sized, and An extrusion screw or gear pump is provided in the chamber provided with a supply port for supplying the resin material to be recovered, which has been polished and sized, and a screen plate is provided in the chamber, and the crushing in the chamber is caused by rotation of the extrusion screw or gear pump. Each collected resin material to be collected is constructed by melting and extruding through a screen plate.
It is designed so that it can be granulated.

[0018]

After the resin molded product is crushed into a plurality of small pieces to be treated, a compressive impact force based on microvibration is applied to each of the small pieces to be crushed, and each crushed piece is crushed. Since the resin coating film is peeled off and separated from the surface of the treated small piece, each treated small piece of material is collected as a resin material, and impact grinding force is added to the materialized collected resin material. Then, it is recovered as a resin material having a relatively roundness by polishing, and the resin material is melt-extruded through a screen plate of a filter mesh mechanism under pressure to further collect a resin material having a small remaining amount of coating film. To get

Further, in the present invention, the operation of the stirring and feeding means prevents the small pieces to be processed from agglomerating and shrinking and solidifying in the hopper, or cancels them. The introduction of small pieces is facilitated.

Further, in addition to the above-mentioned function, by supplying the resin material to be recovered, which has been crushed and the coating film has been removed to some extent, from the supply input port, the fixed pin and the movable pin are connected to each other. While polishing and sizing the recovered resin material, by a means for separating polishing scraps of a desired particle size or less,
It can be arbitrarily classified and discharged to the discharge port, and the recovered resin material having a desired particle size or more can be taken out from the extraction port. If necessary, the recovered resin material taken out to the extraction port can be In the previous step of passing the powder through the screen plate of the filter mesh mechanism by repeating the polishing and sizing with refluxing to the supply / inlet port.
A recovered resin material having a smaller amount of remaining coating film is obtained.

[0021]

EXAMPLE FIG. 1 is an example of a waste resin molded product to be treated and a small piece to be processed obtained by crushing the waste resin molded product. In this case, for example, a bumper member applied to various vehicles. FIG. 3 is a perspective explanatory view conceptually and schematically showing an example of the waste resin molded product and the small piece to be processed obtained by crushing the waste resin molded product.

In FIG. 1, a waste resin molded product 11 to be treated is a base member (hereinafter, mainly, to be recovered) molded of a first resin material (for example, polypropylene for a bumper member of a vehicle). A resin coating film (hereinafter, mainly referred to as a resin coating material) having a second resin material (also polyurethane in the case of a bumper member of a vehicle) as a main component on the front surface side of the resin material 13 , Also referred to as a resin coating to be removed) 14 is formed by coating, and the waste resin molded product 11 is appropriately crushed into small pieces of a desired size, that is, in this case, individual small pieces 12 to be treated. Has been done.

In the present invention, basically,
Treating each of the processed pieces 12 as described below,
By completely removing the resin coating film 14 to be removed from the resin material 13 to be recovered, which constitutes the small piece 12 to be processed, and separating and removing the resin coating film 14, the recovered resin material 14 is treated as a materialized resin material. The resin material 13 is recovered as it is, or, as will be described later, the recovered resin material 13 made into a material is sized to a form suitable for reuse, or sized within a predetermined particle size range. It is recovered as a recovered resin material (hereinafter, also referred to as a recovered sized resin material) 15 by the sized granules, and supplied to a screen mechanism 20 having a screen plate of an extruder.

As the waste resin molded product 11 to be treated, for example, in addition to the bumper member of the vehicle, for example, any natural resin material that can be collected and can be collected and reused, and a synthetic material. A coating material for cosmetics such as glazing, matting, and coloring on at least a part of the surface using a resin material and any molding means, or abrasion resistance and weather resistance. Coating for the purpose of protection, that is, any waste resin on which any applicable film to be removed such as a coating that can be peeled off by applying compressive impact force in this case is formed. It may be a molded article.

As the small piece 12 to be processed, as will be described later, in this case, for example, a cutter mill 201 or the like is used to cut the waste resin molded product 11 into pieces of a required size. The bumper member may have a thickness of 25 μm as described above.
Prepare a polypropylene substrate member with a thickness of about 2.5 mm, coated with a polyurethane coating of about m m, by cutting it to a size of about 20 x 20 mm on a side or crushing it in a broad sense.

Next, a means for treating the waste resin molded product 11 to recover the recovered resin material 13 or the recovered sized resin material 15 will be described. Here, FIG. 2 is a systematic explanatory diagram of the processing steps showing the principle and schematically the outline of the case where the basic first embodiment method according to the present invention is applied.

In applying the basic method of the first embodiment, as described above, the cutter mill 201 is used.
By applying a compressive impact force to the small piece 12 to be processed in order to apply a required compressive impact force to the small piece 12 to be processed obtained by crushing the waste resin molded product 11, A compression impact force applying device 30 and a filter netting mechanism 20 which will be described later for peeling and removing the resin coating film 14 to be removed from the recovered resin material 13 are used.

Further, FIGS. 4 and 5 show that in the method of the above embodiment, a directional compression impact force is continuously applied to the small piece 12 to be processed obtained by crushing the waste resin molded product 11. By adding the small pieces 12 to be treated, and by extension, the apparatus of each embodiment for peeling off the removed resin coating film 14 applied to the surface of the recovered resin material 13 to be treated, and The section A is partially shown in each of which schematically shows the general structure of the compressive impact force adding device of the example device used for crushing / crushing / granulating the treated pieces 12 or for crushing / crushing / separating / granulating. It is the expanded vertical cross-sectional view and the principal part horizontal cross-sectional view.

When applying the method of the specific embodiment, at least one of the compression impact members 33 and 43 is applied to the small piece 12 to be processed obtained by crushing the waste resin molded product 11. On the other hand, in this case, the outer compression impact member 43 is directed toward the other, that is, the inner compression impact member 33 in the direction, in this case, in the rotation circle direction, or in the rotation circle direction and slightly obliquely downward. By continuously applying a directional compression impact force, the recovered resin material 1
A compression impact force applying device 30 (corresponding to FIG. 4 and FIG. 5) for separating and removing the resin coating film 14 to be removed from 3 is used.

That is, in the apparatus configuration shown in FIGS. 4 and 5, the compression impact force applying apparatus 30 has a substantially cylindrical lower device body 31 fixedly installed on the base 32, and the lower device body 31. It has a cylindrical upper vibrating main body 41 which is concentrically connected to the upper part via a vibration-proof elastic member 40, and the elastic member 40 has an upper vibrating main body 41 as will be described later. The elastic coefficient is set to be capable of absorbing and absorbing the minute vibration continuously applied to 41.

On the lower device main body 41 side, however, the upper surface 33b is set to a predetermined opening angle, and in this case, the introduction opening angle for introducing and supplying the small piece 12 to be processed is set. An inner compression impact member 33 is provided which is formed in an umbrella shape and has an inner compression impact surface 33a which is set to the outer peripheral surface at a required angle in an outward conical shape or an outward truncated cone shape. As for 33, the upper end of the support column 34 fixed to the center of the lower device main body 31 so as to project upward, and by extension, the support column close to the inside of the center of the upper vibrating main body 41 side. It is firmly fixed to the upper end of the body 34. Reference numeral 31a is a take-out hopper, which is provided at the lower inner periphery of the lower device main body 31.

On the side of the upper vibrating main body 41, the bracket 42 is arranged at a predetermined angular interval position on the outer peripheral surface portion.
Via a, vibration generating means, in this case, a pair of vibration motors 42, 42, for example, a vibration motor with a so-called eccentric weight, is fixed in good balance, and to the inner peripheral surface part. , The inner compression impact surface 33
a, which is parallel to or substantially parallel to a, or which is opposed to a mode that spreads slightly upward,
Similarly, the outer compression impact member 43 having the outer compression impact surface 43a set in the inward conical shape or the inward truncated cone shape is firmly fixed, and the inner and outer compression impact surfaces 33a, 33a, 43a, which is the small piece 1 to be processed
2 is introduced to set a gap to the extent that a compressive impact force can be added as expected. Regarding the adjustment of the set gap, in this case, although not shown in particular, By vertically adjusting one of the compression impact members 33 and 43 with respect to the other, the compression impact surface 33
This is easily possible because the a and 43a face each other in the shape of a cone or a truncated cone. That is, by changing the thickness of the elastic body 40 or inserting an unillustrated spacer having a desired thickness, the facing gap between the inner and outer compression impact surfaces 33a and 43a can be adjusted. There is. The upper surface 3 of the inner compression impact member 33
A plurality of guide protrusions (not shown) for guiding the introduction of each small piece 12 to be processed may be provided on the protruding portion 3b, and the shape and arrangement are not particularly limited. For example, they may be equiangularly spaced. A plurality of locations may be provided with guide protrusions having a cubic shape, a cone shape, a triangular pyramid shape, or the like. Reference numeral 41a is a charging hopper provided in the upper opening of the upper vibrating main body 41.

Therefore, in the specific embodiment method, the upper vibrating main body 4 in the compressive impact force applying device 30 is used.
By rotating one set of a pair of vibration motors 42, 42 provided in No. 1, the outer compression impact member 43 on the upper vibrating main body 41 side, and by extension, the outer compression impact surface 43a.
Micro vibrations having directivity in the direction of the rotation circle, and more preferably in the direction of the rotation circle directed slightly obliquely downward are continuously generated between the inner side and the inner compression impact surface 33a.

Therefore, by supplying the individual small pieces 12 to be processed to the upper surface 33b from the upper opening of the inner compression impact member 33, the small pieces 12 to be processed are respectively compressed inside and outside. Compressive impact based on the directional microvibration while being sequentially introduced between the impact surfaces 33a and 43a, and rolling and / or sliding resistively between the compression impact surfaces 33a and 43a. Since the force is continuously applied, the crushing and spreading action including the sliding action corresponding to the directionality is applied to the crushing and spreading action including the sliding action corresponding to the directionality. Accordingly, with respect to the recovered resin material 13 and the removed resin coating film 14 that form the small piece 12 to be processed, efficiently and effectively,
Variations in internal stress are applied, and as a result, the resin coating film 14 to be removed is easily separated from the resin material 13 to be recovered, and the resin coating film 14 is separated from each other and both are discharged downward. And recover the resin material 13 as expected.
The resin coating film 14 to be removed is separated from.

In the structure of the compression impact force applying device 30, when the opposing states of the inner and outer compression impact surfaces 33a and 43a are set to expand upward, the inner and outer compression impact surfaces 33a and 43a are set to the above-mentioned states. Each compression impact surface 33a and 53a
Of the small pieces 12 to be processed between the gaps 43a and 73a is further smoothed, and the rolling due to their resistance, the crushing due to the sliding, and the clogging during the spreading action are effective. Which can be avoided in addition to the inside of these,
By setting the opposing shapes of the outer compression impact surfaces 33a and 43a to any combination such as mutual combination of arcuate shapes, conical shape, or combination of truncated cone shape and arcuate shape. The same or almost the same action and effect can be obtained, and when the compressive impact force is applied to the small piece 12 to be treated, it is present between the inner and outer compression impact surfaces 33a and 43a and is not removed. Flowing down a liquid, such as water, for promoting the peeling of the resin coating film 14 is also one effective means.

Further, in the above-mentioned embodiment, the one in which one pair of vibration motors 42 and 42 are provided has been described, but two pairs of two vibration motors are mounted at 90-degree equal intervals, that is, four vibration motors in total. As a result, it is possible to achieve uniform vibration and reduce external vibration and driving noise.

Furthermore, in the apparatus configuration according to the embodiment of FIG. 4, a use for separating and removing the resin coating film to be removed from the resin material to be recovered which constitutes each processing target small piece 12 as the raw material to be processed. The device of the embodiment applied to the upper part of the vibrating main body 41 is a flexible member for vibration isolation 1
The upper opening including the charging opening 131 for charging and supplying the small pieces 12 to be processed, which are appropriately arranged through 30, and the inside of the charging opening 131 and the inside of the upper vibrating main body 41, with respect to the lower device main body 31. And a stirring and feeding mechanism 140 for preventing or canceling the solidification due to agglomeration and tightening of the small pieces 12 to be treated which are fed and supplied.

The vibration isolating flexible member 130 is flexible and tough enough to intercept microvibrations of the upper vibrating body 41.

As described above, the charging opening 131 is located at the upper end of the upper vibrating main body 41 and is vulcanized and molded into the flexible member 130, which is a bellows in this case. It is installed via a flexible member 130 such as rubber so that the small piece 12 to be processed can be charged and supplied from above, and the upper limit of the supply amount of the small piece 12 to be charged and supplied is detected. It has an upper limit detection sensor 132 and a lower limit detection sensor 133 that detects a lower limit.

Further, the agitation and supply mechanism 140 is decelerated and rotated by a geared motor 142 equipped with a reduction mechanism (not particularly shown) mounted and fixed on the frame 141, via a pulley, a belt, etc. It has a stirring shaft 44 that is driven and pivotally supported by a bearing portion 143.
31 and the upper vibrating main body 41 so as to be hung and faced, and with respect to the stirring shaft 44, a hopper stirring blade 4 which is extended and projected laterally corresponding to the inside of the charging opening 31.
5 is provided, and an introduction portion stirring blade 46 is provided close to the introduction portion between the compression impact surfaces 33a and 43a.

In the above embodiment, both the hopper stirring blade 45 and the introduction stirring blade 46 are provided, but depending on the processing amount, type and characteristics of the small piece to be treated, the introduction stirring blade 46 may be provided. Alternatively, the shape is not limited to the illustrated embodiment, and two or three pieces may be provided at equal intervals, or four pieces may be provided in a cross shape.

Therefore, in the apparatus of the embodiment having the above-mentioned structure, by driving the stirring supply mechanism 140, the respective hopper stirring blades 45 and the introducing stirring blades 4 are introduced.
Each of the 6 can rotate at a reduced speed, and at the same time, the 1 provided on the upper vibrating main body 41 by the compression impact force applying / granulating mechanism.
By rotating the pair of excitation motors 42, 42, the outer compression impact member 43 on the upper vibrating main body 41 side, and thus the outer compression impact surface 43a side, and the inner compression impact member 33 inside. Between the compression impact surface 33a,
Microvibration having directionality is generated in the direction of the rotation circle, and more preferably in the direction of the rotation circle that is directed slightly obliquely downward. In this case, it is needless to say that the directional microvibration condition is controlled and set according to the characteristics and properties of the processing target piece 12 to be processed here.

Therefore, from the opening above the input opening 131,
By supplying the individual small pieces 12 to be processed onto the upper surface 33b of the inner compression impact member 33, the small pieces 12 to be processed are provided in the charging opening 131 for the stirring operation of the hopper stirring blade 45. Even if stacking is performed due to a relatively large amount of supply, solidification due to aggregation and austerity is prevented or released, and the introduction portion between the inner and outer compression impact surfaces 33a and 43a is introduced. In this case as well, because of the stirring operation of the introduction portion stirring blades 46, the introduction between the compression impact surfaces 33a and 43a, which are gradually narrowed as the downflow supply path, is smoothly performed, and the compression impact surfaces A compressive impact force based on microvibration having a given directional property is continuously applied between the parts 33a and 43a while rolling or sliding in a resistive manner. Therefore, here, the resin material to be recovered constituting the small piece 12 to be treated is subjected to a crushing action including a sliding action corresponding to the directional property, and is accompanied by a crushing action including a sliding action corresponding to the directional property and a spreading action. Internal stress fluctuations are applied to the resin coating film to be removed, and as a result, the resin coating film to be removed is easily separated from the resin material to be recovered, as expected, and separated from each other, and both are removed. Each is discharged downward.

In the apparatus of the above-mentioned embodiment, as the generation of directional microvibration in the compression impact force applying / granulating mechanism, the microvibration is applied to the outer compression impact member 43 side. By substantially the same technical means, the inner compression impact member 33 side is slightly vibrated, or if necessary, the inner and outer compression impact members 33, 43 are compressed.
May be made to vibrate in correspondence with each other.

That is, although not shown, for example,
At a predetermined angular interval position on the outer peripheral surface of the lower device main body 31 side, a vibration motor having an eccentric weight similar to the one pair of the vibration motors 42, 42 is fixed with good balance through a bracket. May be. Further, the inner compression impact member 33 on the lower device body 31 side is pivotally supported,
This shaft is connected to a geared motor provided outside the lower device main body via a bevel gear or the like, and further, the inner compression impact member 33 or an eccentric weight portion is provided on the rotary shaft so as to project. It is also possible to generate a slight vibration accompanied by a rotational movement.

FIG. 3 is a systematic explanatory diagram of respective processing steps, which shows in principle and schematically the outline in the case of applying the concrete example method for recovering the resin material according to the present invention.

In the method of this embodiment, first, the above 1
A pair of vibrating motors 42, 42 has 5.5 kW, a vibrating force of 14 t, and a processing capacity of 30 to 50 kg / hr. The resin coating film 14 to be removed is peeled off and separated from the resin coating material 13 to be removed. The countermeasure means for the case where there is a small piece 12 to be processed which is discharged without separating the film 14 will be taken up. In this way, the removed resin coating film 14 from the recovered resin material 13 is discharged without being separated. The treated small piece 12 is re-crushed, then ground and sized.

That is, in the case of the method of this embodiment, as is apparent from FIG. 3, the waste resin molded product 11 is first processed in the crushing step 101 by using, for example, a cutter mill 201 or the like to form pores having a desired diameter. After being crushed to the end under a screen having a predetermined mesh formed by punching, a small amount of the resin coating film 14 to be removed which is peeled off at the time of crushing is removed.

Then, in the crushing / peeling step 102, the small pieces 12 to be processed are subjected to the crushing and peeling actions by the above-mentioned device 30, and are subjected to sieving 102a (sieving mesh 1.3 mm).

In the sieving 102a, the flattened resin material 13 which has been flattened by the sufficient crushing and the peeling action is left on the sieving surface 102b side. While being transferred to the crushing / peeling step 104 and crushed again, the resin film 14 to be removed and the like, which has been peeled off by the repeated crushing in this way, is removed on the undersieve 102c side. Then, this is immediately transferred to a polishing / sieving step 103 (1.5 mm screen), and is polished and sized by using a polishing / sizing apparatus 150 whose details will be described later to obtain a polished / sieved material. The corner edge portion of the recovered resin material 13 is rounded for polishing, and is the recovered sized resin material 15 having higher fluidity.

Further, the recovered sized resin material 15 is recovered.
Is transferred to the third-re-crushing / peeling step-106 again and is crushed again, and at the same time, the next polishing / grinding step 105 is again performed.
(1.5 mm screen), and then polishing and sizing using, for example, a pin mill 203, etc. The sized resin material 15 is obtained, and the sized resin material 15 to be recovered is supplied to a screen mechanism having a screen plate described later to granulate and collect.

After the final classification and separation treatment steps, the remaining amount of the coating film is 0.5 wt% and the recovery rate is 71%.

In the sieving process of the sieving step 102a,
A 2 to 4% resin film to be removed (coating 5.8 wt%) is obtained and discarded.

In the primary and secondary sizing and separation treatment steps, 12 to 14% (coating approximately 3.0 wt%) and 1 respectively.
0 to 12% (coating about 2.7 wt%) is separated, and a total of about 24% of the resin coating to be removed can be used as a recycled material.

It should be noted that variations can be made in various combinations among the processing steps, and the processing steps can be arbitrarily combined and set according to the purpose and application.

Further, it is preferable to adopt the configurations of FIGS. 6 and 7 for the polishing and sizing apparatus 150.
Here, FIG. 6 shows that the recovered resin material 13 from which the removed resin coating film 14 has been removed is polished and sized so that the corners of the recovered resin material 13 are rounded as a whole. FIG. 7 is a vertical cross-sectional view of an example of a polishing and sizing apparatus 150 schematically showing the schematic configuration of a fourth example apparatus for collecting the recovered sieving resin material 15.
FIG. 4 is a front explanatory view for explaining the polishing and particle sizing action of the above device configuration.

In the device configurations shown in FIGS. 6 and 7,
The polishing / sieving apparatus 150 is provided with a communication opening to the center of the supply / injection port 152 of each of the processed small pieces 12 obtained by roughly crushing the waste resin molded product 11 or each processed small piece 12 of the powder molded product. The fixed disk 151 and the fixed disk 15
1. The fixed end plate 153 joined to the No. 1 by the peripheral side plate 154 and the fixed end plate 153 side of the fixed disk 151 on the side of the polishing and sizing powder
81 are opposed to each other with a movable disk 161 rotatably driven by a rotation horizontal shaft 162, respectively.
Further, regarding the rotary horizontal shaft 162, the bearings 163, 1
It is pivoted by 63.

Then, on the fixed disk 151, the fixed pins 154 are sequentially planted on a plurality of rotation loci a,
In addition, on the movable disk 161, the movable pins 164 which are alternately inserted on a plurality of rotation loci b different from the fixed pins 154 are sequentially planted to fix these fixed pins 154.
The movable pins 16 and 164 are made to be capable of polishing and sizing, and further, the movable disc 16
1 and the peripheral side plate 155 on the outer peripheral side of the discharge space 1
A screen 171 having a predetermined mesh in which pores having a desired diameter are formed by punching is provided around 82, and the discharge space 1 is provided.
A discharge port portion 172 is provided below 82, and a polishing / particle sizing space 181
The outlets 173 are opened in the lower part of the screen 171 and the outlet 173 is provided with a plug valve 174 for opening / closing control.

Therefore, the polishing and sizing apparatus 1 having the above structure
In 50, when each small piece 12 to be treated or each resin material 13 to be recovered is supplied to the supply inlet 152, each small piece 12 to be processed or each resin material 13 to be recovered is polished and sized in the space 181. At the center of the pin, the fixed and movable pins 154 and 164 are subjected to polishing, sizing, and centrifugal action together, and gradually approaching the outer peripheral side while being polished and sizing, The generated polishing powder and sized powder are
After passing through the screen 171, and being separated into the discharge space 182, the corners that have been polished and sized after being discharged to the outside from the discharge port 172 and left in the screen 171 are rounded as a whole. The recovery-targeted sized resin material 15 or the recovered sized-particle powder material can be taken out from the outlet 173 by opening the plug valve 174.

When the outlet 173 and the supply inlet 152 are communicated with each other while the plug valve 174 is open, the recovered sized resin material 15 or the recovered resin material 15 taken out from the outlet 173 is collected. The sized powder material can be refluxed to the supply / inlet part 152, and continuous polishing and sized can be performed.

Next, the recovered sized resin material 15 that has undergone the polishing and sizing is continuously fed into the supply port 123 of the extruder 120 having the filter screen mechanism 20.

The filter screen mechanism 20 of the extruder 120 is a known underwater granulator, an extrusion molding machine, or the like, which filters impurities contained in the plastic material extruded from the extruder using a screen plate. , When the mesh of the screen plate becomes dirty due to the accumulation of impurities, etc., equipped with an automatic filter screen changing device used to automatically replace the dirty screen plate with a new screen plate without stopping the extruder. Various types of automatic filter changing devices have been proposed, and details thereof will be omitted. For example, US Pat.
No. 50,840 and as shown in FIGS. 8 and 9, a high-pressure plastic stream is supplied from the side surface of the support case 21 through a pipe 24b → 24a, to which a screen plate 27 on the disk 22 is connected for filtering. Done. Further, the screen plate 27 is divided into a number of overflow grooves 28. Then, the disk 22 to which the screen plate is attached filters the plastic flow of the supply pipe 24b while rotating and is discharged to the decompression unit 25 on the side surface. Therefore, the decompression device 29 is attached.

Further, in order to improve the filtration efficiency, the hole of the screen plate 27 is made to overlap with the hole of the pipe 24b through which the plastic flow passes, thereby suppressing the pressure gradient.

In FIG. 8 and FIG. 9, a pipe 2 for horizontally flowing a high-pressure plastic stream is provided in the center of the support case 21.
4a and 24b are attached, and the disk 22 is rotated around the shaft 23 passing therethrough.

The screen plate 27 comes into contact with the high-pressure plastic stream of the rotary pipe 24a, and the superposed holes are cleaned by filtration. The extrusion screw 122 of the extruder 120 is exposed to the rear of the supply pipe 24b.

Next, FIG. 10 omits the above-mentioned sieving step,
It is a systematic explanatory view of the treatment process which shows the outline of the practical method of collecting and granulating the waste resin material in the method of the present invention as another example method. The processing steps performed sequentially in the method of the embodiment shown in FIG. 10 are as follows.

(A) [Crushing] treatment step 250. In this [coarse crushing] treatment step 250, the resin material as the waste resin molded product is crushed to obtain each of the small pieces 12 to be treated once, and as the crushing means, for example, , The cutter mill 201, this
A cutter mill 201 provided with a screen formed by punching pores having a diameter of about 4.0 m / m is used.

Therefore, in this [coarse crushing] processing step 250, the waste resin molded product is crushed by the cutter mill 201, and within the screen thereof, even if it is subjected to the crushing action, a predetermined size, Here, each small piece 12 to be processed having a size that cannot pass through the screen set to a hole diameter of about 4.0 m / m is left, and is continuously repeated until the small piece 12 reaches the predetermined size. On the other hand, each piece 12 to be processed which has passed through the screen is obtained by being crushed to at least a predetermined size.

(B) [Primary compression, peeling-1] processing step 2
51. In this [primary compression, peeling-1] processing step 251, each small piece 1 to be processed obtained in the above [coarse crushing] processing step 250
2 is for compressing and peeling treatment in the first stage, and the compression and peeling treatment means in the first stage is appropriately provided in this case, for example, in the configuration of the compression impact force applying device 30. By interposing the damper part, each clearance between each inner compression impact surface 33a and each outer compression impact surface 43a can be secured.
Two sets of two sets of four 5.5 kw vibration motors 42 provided with a compression impact force application section set to about 2.0 m / m are provided, and a compression impact force application device 301 having a vibration force of 28 t is used.

Therefore, in this [primary compression, peeling-1] processing step 251, each small piece 12 to be processed which has been crushed to a predetermined size by the crushing processing in the above [crushing] processing step 250. Of the compression impact force adding device 301
Due to the compression and peeling action between the inner compression impact surface 33a and the outer compression impact surface 43a, which are set to each clearance of about 2.0 m / m, each of the processed small pieces 12 receives each compression impact force, It is spread a little larger, and with this spreading, most of the applied resin film 14 to be removed is peeled off. Each small piece 12 to be processed from which the resin coating film 14 to be removed is peeled is taken out.

(C) [Secondary compression, peeling-2] processing step 2
52. In this [secondary compression, peeling-2] processing step 252, the primary compression and peeling processing is performed in the [primary compression, peeling-1] processing step 251, so that it is spread to a slightly larger size. And a means for compressing and exfoliating each small piece 12 to be treated on the sieve that has been subjected to sieving and classification in the second stage, and is a means for compressing and exfoliating in the second stage. As in the case described above, the clearance between the inner compression impact surface 33a and the outer compression impact surface 43a is set to about 1.0 m / m by appropriately interposing a damper section. Compression impact force applying device 3 having compression impact force applying section 3
02 is used.

Accordingly, in this [secondary compression, peeling-2] processing step 252, the primary processing in the above [primary compression, peeling-1] processing step 251 spreads it to a predetermined size. Each of the processed small pieces 12 has an inner compression impact surface 33a and an outer compression impact surface 43a set to a clearance of about 1.0 m / m of the compression impact force applying device 302.
In response to the secondary compression and peeling action between the respective processed small pieces 12, the small pieces 12 to be processed are expanded again due to the compressive impact force applied again, and here again, with this expansion, The resin coating film 14 to be removed, which is left partially, is peeled off. The remaining amount of the coating film is 1.5 wt% and the recovery rate is 99% in the processes up to this point.

(D) [Primary sizing, separation] processing step 25
3. In this [primary sizing, separation] processing step 253,
By the secondary (final) compression and peeling treatment in the [secondary compression, peeling-2] processing step 252, each small piece 12 to be processed, that is, in other words, each resin material to be recovered in this case. This is for sieving 13 to obtain a recovered sizing resin material 15. The sizing / separating means is the polishing / sizing device 150, and in this case, a pore diameter of about 1.0 m / m. Polishing with a screen formed by punching the pores of
A sieving device 150 and a blower 501 for sucking and taking out the recovered sizing resin material 15 as a product left in the screen are used.

As an alternative to the blower 501 or together with the blower 501, the polishing / grinding device 150 for polishing / grinding
Compressed air is sent into the sizing space 181 and the space 181
While agitating the recovered resin material 13 in the fixed end plate 1
The recovered resin material 13 may be refluxed from the hole formed in 53 to the supply / injection port that communicates via a pipe. Therefore, in this [size control, separation] processing step 253, the second step in the above [secondary compression, peeling-2] processing step 252 is performed.
By the subsequent processing, each recovered resin material 13 as each small piece 12 to be processed, which has been spread to a predetermined size, is subjected to the sizing and separating actions by the polishing / sizing apparatus 150, and The recovered resin material 13 is sized, and in this case 1.0 m
The recovered sized resin material 15 of a size that does not pass through a screen set to a hole diameter of about / m, that is, the recovered sized resin material 15 as a product is left in this, and is recovered as the product. The sized resin material 15 is sucked and taken out by the blower 501 and sent to the third compression peeling step.
The remaining amount of coating film is 0.7 wt% and the recovery rate is 85%.
The processing capacity is 20 rpm of the above four stirring blades at the introduction section,
80 to 100 kg / h.

(E) [Third compression, peeling-3] processing step 2
54. In the [third compression, peeling-3] processing step 254, the recovered sized resin material 15 having a required particle size is obtained by sizing and separating in the [sizing / separation] processing step 253. Is used for compression and peeling treatment in the third stage, and in the compression and peeling treatment means in the third stage, as in each of the above-mentioned cases, a damper portion is also appropriately interposed. Thus, the compression impact force applying device 303 provided with the compression impact force applying section in which the clearance between the inner compression impact surface 33a and the outer compression impact surface 43a is set to about 0.8 m / m is used. Therefore, in this [third compression, peeling-3] processing step 254, the above-mentioned [particle size control / separation] processing step 253,
The processing steps 250 to 253 are matched with the small pieces 12 to be processed which have been peeled off in the processing steps 250 to 252.
The resin coating film 14 to be removed, which partially contains the small pieces 12 to be processed, discharged from the
The third small (final) compression and peeling action is applied between the inner compression impact surface 33a and the outer compression impact surface 43a, which are set to the respective clearances of about 0.8 m / m, and each of the treated small pieces 12 is processed.
However, it is spread due to the compressive impact force applied over and over again, and the resin coating film 14 to be removed which has been left on a part is peeled off due to this spreading. become.

(F) [Secondary sizing, separation] processing step 25
5. In this [size control, separation] processing step 255, the small piece 12 to be processed which has been subjected to the third (final) compression and separation processing in the [third compression, separation-3] processing step 254, that is,
In this case, in other words, it is for finally sizing the recovered sized resin material 15 to obtain the recovered sized resin material 15. The polishing / sieving apparatus 150, which is provided with a screen formed by punching pores having a pore size of about 1.0 m / m, and the same blower as in (d) above. 501 is used.

The subsequent steps are performed in the same manner as the above-mentioned (d) [primary particle size regulation, separation] treatment step 253.

Therefore, in this [secondary particle size regulation, separation] processing step 255, a predetermined size is obtained by the third (final next) processing in the above [third compression, peeling-3] processing step 254. The recovered sized resin material 15 as the small pieces 12 to be processed, which have been spread on the surface of the slab, is used as a polishing / sizing apparatus 150 in this case.
The sieving / separating action of the sieving resin is performed, and the recovered sieving resin material 15 is further sized, and in this case, the recovered sizing resin having a size that does not pass through a screen having a pore diameter of about 1.0 m / m The material 15, that is, here, the recovered sized resin material 15 as a product is left, and the recovered sized resin material 15 as the product is sucked and taken out by the blower 501. The resin coating film 14 and the like to be removed, which has a predetermined size or less and contains collected waste that is handled like dust through the screen, is blower 6 as described later.
It will be sucked and discharged by 03.

(G) [Classification, Separation] Treatment Step 256. In this [classification / separation] treatment step 256, the particles to be recovered which have been sized and separated in the [grading / separation] treatment step 255 to be a product and which are sucked out by the blower 501 are taken out. This is for classifying the resin material 15 and the resin coating film 14 to be removed, etc., which still partially contains dust, dust, etc., and the classification and separation processing means correspond to the former classification, for example. Then, a known cyclone device 601 is used, and a known back filter device 602 corresponding to the latter classification and a blower 603 required for suction action in the back filter device 602 are used.

Therefore, this [classification, separation] processing step 25
In No. 6, the particle size was adjusted in the above [size adjustment, separation] processing step 255.
Each recovered sized resin material 15 as a product partially containing separated dust, scraps, etc. is classified by the cyclone device 601, and each recovered sized resin material 15 is collected. By doing so, it can be taken out as a recovered product as expected. Further, the dust and debris separated by the cyclone device 601 are merged with the resin coating film 14 to be removed, which partially contains dust and debris discharged outside the screen in the previous stage, and then the blower 603 It is separated by the back filter device 602 by the suction action and collected.

The recovered sized resin material 15 to be recovered can be used for resin molding as it is, but the resin to be removed from the recovered sized resin material 15 obtained in this manner When the coating film 14 is not completely removed and the recovered sized resin material 15 has a relatively small proportion of the removed resin coating film 14, the coated resin containing the removed resin coating film 14 is included. The recovered sized resin material 15 can be used as a resin material that does not hinder resin molding by crushing and pulverizing and pulverizing to 100 μm under.

The back filter device 60 is also used.
The to-be-removed resin coating film 14 and the like collected by 2 can be used as a resin material by, for example, pulverizing it to 100 μm under, and when it is pulverized in this way, it was removed. The resin coating film can be used together as a resin material that does not hinder resin molding. The remaining coating film is 0.5 wt% and the recovery rate is 72%.

Also in the method of the above-mentioned embodiment, various combinations can be made between the processing steps, and the processing steps can be arbitrarily combined and set in accordance with the purpose and application. 0.5 to 0.9
The recovered resin material containing the coating film of wt% is a supply port 12 for supplying the recovered resin material (recovered sized resin material) 15.
3, an extrusion screw 122 or a gear pump is provided in a chamber 121 of an extruder 120, and a filter screen mechanism 20 having an overflow groove 28 on the outer periphery of a screen plate 27 that is detachably attached to the disk 22 in the chamber 121. Is provided, and the recovered resin material (recovered sized resin material) 15 that has been melted into the chamber 121 and has a high pressure by the rotation of the extrusion screw 122 or the gear pump is extruded through the screen plate, and thus the remaining amount of the coating film. Filter to 0.20 wt% to 0.30 wt%.

The filter mesh mechanism of this extruder is a known underwater granulator, an extruder, or the like, which filters impurities contained in the plastic material extruded from the extruder using a screen plate, When the mesh of the plate becomes dirty due to the accumulation of impurities, etc., without stopping the extruder,
With an automatic filter screen changing device used to automatically replace a dirty screen plate with a new screen plate, various types of automatic filter screen changing devices have been proposed, and details are omitted, For example, U.S. Pat. No. 4,850,
No. 840 and as shown in FIGS. 8 and 9, a high-pressure plastic stream is supplied from the side surface of the support case 21 through the pipes 24b and 24a, and is filtered by a screen plate 27 on the disk 22 which is associated therewith. . Further, the screen plate 27 is divided into a number of overflow grooves 28. Then the disk 22 with the screen plate attached is rotated to rotate the supply pipe 2
The plastic stream of 4b is filtered and discharged to the side decompression unit 25. Therefore, the decompression device 29 is attached. Further, in order to improve the filtration efficiency, the holes of the screen plate 27 are made to overlap the holes of the pipe 24b through which the plastic flows,
The pressure gradient is suppressed.

In FIG. 8 and FIG. 9, a pipe 2 for horizontally flowing a high-pressure plastic stream is provided in the center of the support case 21.
4a and 4b are attached, and the disk 22 rotates around the shaft 23 passing through the parts. The screen plate 27 comes into contact with the high-pressure plastic stream of the rotary pipe 24a, and purification is performed by filtration through the overlapping holes. The extrusion screw 122 is exposed to the rear of the supply pipe 24b.

[0086]

The following Table 1 shows the physical properties of only polypropylene thus recovered.

[0087]

[Table 1]

The following Table 2 shows the blending physical properties of a mixture of the same sized resin material 15 to be recovered, which is 30%, and virgin 70%, as in the previous table.

[0089]

[Table 2]

[Brief description of drawings]

FIG. 1 is a resin molded product which is an example of a processing object of the present invention,
FIG. 3 is a perspective explanatory view conceptually and schematically showing each example of a small piece to be processed obtained by crushing the resin molded product.

FIG. 2 is a systematic explanation of processing steps showing the principle and schematic outline of the case of applying the method of the first basic example of the method for recovering and granulating a resin material, which is an example of the processing object of the present invention. It is a figure.

FIG. 3 is a systematic explanatory diagram of a processing step showing a principle and schematic outline of the case of applying a specific example method of a method of recovering and granulating a resin material which is an example of a processing object of the present invention. .

FIG. 4 is the same as the above-mentioned embodiment. A compression impact force is added as a granulation device that collects small particles to be processed as an embodiment device.
It is the longitudinal cross-sectional view which partially expanded the A section which shows the schematic structure of a granulator.

5 is a transverse cross-sectional view of the main parts in FIG.

FIG. 6 is a vertical cross-sectional view schematically showing a schematic configuration of a polishing / sieving apparatus used in the method of the above embodiment.

FIG. 7 is a front explanatory view for explaining the polishing / particle size regulating action in FIG. ; And

FIG. 8 is a front view showing an example of a filter mesh mechanism.

9 is a partial cross-sectional view of FIG.

FIG. 10 is a systematic explanatory diagram of a processing step showing a principle and schematic outline of a method of recovering and granulating a resin material according to the present invention, and a practical example method.

[Explanation of symbols]

 11 Resin molded product to be treated 12 Small piece to be treated 13 Base member (recovered resin material) 14 Resin coating film (removed resin coating film) 15 Recovered resin material (recovered sized resin material) 20 Filtering mechanism 21 Support Case 22 Disk 23 Shaft 24a, b Supply pipe 25 Pressure reducing part 27 Screen plate 28 Overflow groove 29 Pressure reducing device 30 Compressive impact force applying device 31 Lower device body 31a Extraction hopper 32 Base 33 Inner compression impact member 33a Inner compression impact surface 33b Upper part Surface 34 Support pillar 40 Vibration-proof elastic member 41 Upper vibrating body 41a Input hopper 41b Intermediate hopper 42 Excitation motor (vibration generating means) 42a Bracket 43 Outer compression impact member 43a Outer compression impact surface 101 Crushing process 102 Crushing / Peeling process 102a Sieve 102b Sieve 102 Sieve 103 Polishing and sizing process 104 Re-crushing and peeling process 105 Polishing and sizing process 120 Extruder 121 Chamber 122 Extrusion screw 123 Supply port 150 Polishing and sizing device 151 Fixed disk 152 Supply input port 153 Fixed end plate 154 Fixed pin 155 Circumferential side plate 161 Movable disk 162 Rotating horizontal shaft 163 Bearing 164 Movable pin 171 Sieve mesh 172 Discharge port 173 Discharge port 174 Plug valve 181 Polishing / sizing space 182 Discharge space 201 Cutter mill 202 Disk mill 203 Pin mill 250 [ Crushing] processing step 251 [first compression, peeling-1] processing step 252 [secondary compression, peeling-2] processing step 253 [primary sizing / separation] processing step 254 [third compression, Peeling-3] Treatment step 255 [Secondary sizing, separation] Treatment step 256 Classification, separation] step 301-303 compressive impact force applying device 501 blower 601 cyclone 602 back filter unit 603 Blower

Claims (12)

(57) [Claims] 1. A step of crushing a resin molded product having a resin coating film formed on its surface into a plurality of small pieces to be treated, and a compression impact based on microvibration to each of the small pieces to be treated. A step of applying a force to crush, and removing the resin coating film peeled by crushing at any time to obtain a resin material that has been made into a raw material, and a step of melt-extruding this resin material through a screen plate under pressure. A method for collecting and granulating a waste resin molded product, characterized by containing at least. 2. A step of crushing a resin molded article having a resin coating film formed on its surface into a plurality of pieces to be treated, and a compression impact based on microvibration with respect to each of the crushed pieces to be treated. Applying a force to crush, and removing the resin coating film peeled by crushing at any time, and applying a compressive impact force based on microvibration to each crushed small piece to be processed. At least a step of crushing, a step of removing the resin coating film separated from each crushed one side by the re-crushing to obtain a materialized resin material, and a step of melt extruding the resin material through a screen plate under pressure. A method for recovering and granulating a waste resin molded product, which is characterized by including: 3. A step of crushing a resin molded product having a resin coating film formed on its surface into a plurality of pieces to be treated, and a compression impact based on microvibration to each of the crushed pieces to be treated. Crushing by applying force, and removing the resin coating film peeled by crushing at any time, and each resin material to be recovered from which the resin coating film has been removed is subjected to impact grinding force to be ground and sized. A method for collecting and granulating a waste resin molded product, comprising at least a step of forming a resin material into a raw material and a step of melt-extruding the resin material through a screen plate under pressure. 4. A step of crushing a resin molded article having a resin coating film formed on its surface into a plurality of pieces to be treated, and a compression impact based on microvibration to each of the crushed pieces to be treated. Applying a force to crush, and removing the resin coating film peeled by crushing at any time, and applying a compressive impact force based on microvibration to each crushed small piece to be processed. A step of crushing, a step of applying an impact grinding force to each of the re-crushed individual crushed pieces, polishing and sizing, and the sizing that has been sized and separated by the sizing. At least including a step of separating the resin coating film, etc. formed into a material, removing the resin coating film, etc. to obtain a materialized resin material, and a step of melt extruding this resin material through a screen plate under pressure. A method for collecting and granulating waste resin moldings, which is characterized by 5. A step of crushing a resin molded product having a resin coating film formed on its surface into a plurality of pieces to be treated, and a compression impact based on microvibration with respect to each of the crushed individual pieces to be treated. Applying a force to crush, and removing the resin coating film peeled by crushing at any time, and applying a compressive impact force based on microvibration to each crushed small piece to be processed. Crushing step, for each re-crushed individual crushed piece, a step of applying an impact grinding force to polish and sizing, and to each of the abraded and sized sized recovered resin materials A step of re-crushing by applying a compressive impact force based on micro-vibration, a step of applying an impact grinding force to each re-crushed individual crushed piece, re-polishing, and sizing. The sized product that has been sized and the resin coating film etc. separated by the sized product Waste resin molded product, which comprises at least a step of dividing and removing the resin coating film to form a materialized resin material, and a step of melt extruding the resin material through a screen plate under pressure. Collection and granulation method. 6. A step of crushing a resin molded article having a resin coating film formed on its surface into a plurality of pieces to be treated, and a compression impact based on microvibration with respect to each of the crushed pieces to be treated. A step of applying a force to crush, a step of applying a compressive impact force based on micro-vibration to each of the crushed resin materials to be recovered and re-crushing, and each of the re-crushed individual crushing And a step of polishing and sizing by applying an impact grinding force to each piece, and re-polishing and sizing by applying an impact grinding force to each of the sized particles. A step of separating the sized product and the resin coating film etc. separated by the grading, and removing the resin coating film to obtain a materialized resin material; Melt-extruding the material under pressure through a screen plate. A method for collecting and granulating waste resin molded products. 7. The particle size of the re-crushed crushed pieces is adjusted to be equal to or smaller than a predetermined particle size range during the re-crushing step of each of the recovered resin materials .
Collection of waste resin moldings described in either 5 or 6
Granulation method. 8. An apparatus for separating and removing a resin coating film from a resin molded product having a resin coating film formed on a surface thereof, and collecting and granulating the material as a materialized resin material. A pair of compression impact members having compression impact surfaces facing each other with a predetermined gap therebetween, and the crushed pieces to be treated are sequentially supplied above the compression impact members. A supply opening is formed to allow at least one of the compression impact members to vibrate slightly with respect to the other, and supply of each recovered resin material crushed by each compression impact member. An extrusion screw or gear pump is provided in the chamber provided with a mouth, and a screen screen mechanism is provided in the chamber, and the inside of the chamber is rotated by the rotation of the extrusion screw or gear pump. Crushed recovered and granulating apparatus of the waste resin molded article, characterized in that each fragments to be processed were configured to push through the screen plate. 9. An inner compression impact member having an inner compression impact surface, an outer compression impact member having an outer compression impact surface opposed to the inner compression impact surface with a predetermined gap, and the outer compression impact member. And a plurality of upper vibration generating means installed at predetermined positions on the outer peripheral surface of the outer peripheral surface of the outer peripheral surface of the inner wall of the outer wall of the outer wall of the inner wall and the outer wall of the outer wall of the inner wall of the outer wall of the inner wall of the inner wall of the outer wall of the inner wall of the inner wall of the inner wall of the outer wall of the inner wall of the inner wall of the outer wall of the inner wall of the outer wall of the outer wall of the outer wall of the inner wall of the inner wall of the outer wall of the inner wall of the inner wall of the inner wall of the inner wall of the outer wall of the inner wall of the inner wall of the inner wall. By means of the upper vibration generating means, it is possible to give a directional microvibration controlled by the upper vibration generating means in accordance with the characteristics and properties of the small piece to be processed for each corresponding processing mode of the small piece to be processed. An extrusion screw or a gear pump is provided in a chamber provided with a supply port for supplying each resin material to be recovered crushed by each compression impact member, and a screw is provided in the chamber. A waste resin molded product characterized by comprising a screen mechanism having a plate, and configured to extrude each crushed resin material to be recovered in the chamber through the screen plate by rotation of the extrusion screw or gear pump. Collection and granulation equipment. Wherein said relative prelude to between each compression impact surfaces, according to claim 8 in which each of the processed piece mutual aggregation, to place the stirring supply means to prevent or release the stringency, characterized by being configured Alternatively , the collection / granulation apparatus for the waste resin molded product according to 9 is provided. 11. An agitating and supplying means for preventing or canceling agglomeration and tightening of the small pieces to be treated is arranged at the introduction portion between the compression impact surfaces including the inside of the charging opening. 10. The apparatus for collecting and granulating a waste resin molded product according to claim 8 or 9 . 12. An apparatus for separating and removing a resin coating film from a resin molded product having a resin coating film formed on the surface thereof, and collecting and granulating the material as a materialized resin material. A pair of compression impact members having compression impact surfaces facing each other with a predetermined gap therebetween, and the crushed pieces to be treated are sequentially supplied above the compression impact members. A fixed disk in which at least one of the compression impact members is configured to be capable of slightly vibrating with respect to the other, and a central portion is made to communicate with the supply inlet port of the recovered resin material. A fixed-side polishing and sizing means in which fixed pins are sequentially planted on a plurality of rotation loci, and a movable disk that is rotatably drivable facing the fixed disk. On multiple rotation paths different from each fixed pin A movable side polishing and sizing means in which movable pins are sequentially implanted, and a combination of each fixed pin and each movable pin are provided at the outer peripheral portion, and for collecting and discharging the recovered resin material having a desired particle size or less arbitrarily. The separation means communicated with the discharge port portion and the extraction means for extracting the recovered resin material having a desired particle size or more to the extraction port portion, and polishing the recovered resin material between the fixed pins and the movable pins. , Extruding screw or gear pump is provided in a chamber having a supply port for supplying each of the polished and sized particles of the recovered resin material, and a screen plate is provided in the chamber. A net mechanism is provided, and the crushed resin material in the chamber is extruded through the screen plate by rotation of the extrusion screw or gear pump. This is a device for collecting and granulating waste resin molded products.