JP2004255669A - Composition for molding regenerated product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make regenerable a flexible container bag waste material having been considered to be difficult to regenerate, and make it possible to lower a temperature at the time of molding or at the time of heating and melting in an extruder or the like to enhance the flowability of the molten flexible container bag waste material to suppress the thermal deterioration of a plastic, to shorten not only the time required in cooling at the time of molding of a regenerated product but also the time required in molding such as injection molding, to bring the flexible container bag waste material or waste plastics to a milled or granulated form easy to regenerate to facilitate the handling of a molding resin and to impart a good result in the regeneration of the waste plastics. <P>SOLUTION: This composition for molding the regenerated product is constituted of 5-95 pts.wt. of a granulated material comprising the flexible container bag waste material, which is obtained by crushing the flexible container bag waste material to melt the same under heating and cutting the molten material to form the same into a granular shape, and 95-5 pts.wt. of the milled or granulated waste plastics which is obtained by crushing and compressing the flexible container bag waste material and melting a part of the crushed flexible container bag waste material by the friction heat caused at the time of compression while cutting the molten material into a milled form. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a composition used as a molding material for recycled products such as compression molding, injection molding, and extrusion molding.
[0002]
[Prior art]
Flexible container bags (flexible container bags) are widely used as granular or powdery transport bags for synthetic resins, foods, cereals, fertilizers, chemicals, and the like, and are discarded in large quantities.
The flexible container bag is, for example, a laminated sheet in which a thermoplastic resin film is laminated on both sides of a stretched woven fabric made of a thermoplastic resin, and specific examples thereof include a multifilament yarn such as polyester or polyamide. A thermo-adhesive resin layer such as ethylene vinyl acetate copolymer (EVA tarpaulin) is formed on both sides of a woven fabric, or a polyethylene-based (PE cloth sheet) is formed on both sides of a woven fabric made of flat yarn of high-density polyethylene. EVA tarpaulin or the like is melted and fused on the surface (both surfaces) of a woven fabric woven from polyester fiber yarns as in the example, which is constituted by a laminated sheet having a thermoplastic resin layer formed thereon. Considering the convenience of polyester and EVA, and furthermore, the convenience of transportation and discharge of contents from bags, polypropylene-based It is made of a material with a different MI (melting index), such as PP when it is attached, and the body cloth and the lining cloth constituting the flexible container bag are welded with a high-frequency welder or the like. Therefore, it is considered difficult to recycle discarded FIBC bags by ordinary heating and dissolving method (external heating) even if they are collected, and even if they are recovered, they must be disposed of by incineration. Not obtained, generation of dioxin, CO ₂ Cause pollution problems such as the generation of CO2, especially CO2 ₂ Reduction is a problem
In other words, in the past, for the purpose of recycling waste plastics, various types of recycling processing have been performed to recycle, but in the conventional example, usually, only a single material is regenerated, and a different material is used. It is made of a material with MI (melt index), and it is much more difficult to recycle the FIBC bag as described above, in which the woven fiber cloth is stored inside the structure and difficult to separate from the laminated thermoplastic resin layer. And it was.
In addition, as a basic idea of the regeneration, it was based on the idea that high-level physical properties could not be expected even when melt-molding plastic mixtures with different chemical and physical properties during regeneration. Separation and separation were required, and regeneration of complex structures such as flexible container bags was avoided.
[0003]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made in view of the related art, and has as its object to provide a new recycling technology for flexible container waste materials.
Other objects and novel features of the present invention will become apparent from the following description and drawings.
[0004]
[Means for achieving the object]
The present inventors have found that if a specific type of waste plastic bag is mixed with a specific type of waste plastics in a similar manner at a specific ratio, the injection molding machine, a compression molding machine, or the like may be used to mold a recycled pallet or the like. In addition, it is possible to reduce the temperature at the time of molding or heating and melting when continuously molding by a continuous automatic molding machine after heating and melting with an extruder, and also to improve the fluidity of the plastics, The present inventors have found that it is possible to suppress deterioration, shorten the time required for cooling when molding a recycled product, and further reduce the time required for molding such as compression molding, injection molding, and extrusion molding. Was completed.
That is, the present invention provides (1) a flexible container bag which is crushed and compressed, a part of the crushed flexible container bag material is melted by frictional heat at the time of the compression, and the melt is cut into a mill-shaped flexible container bag. 5 to 95 parts by weight of a granular material using the waste material of the flexible container bag as a raw material, which is obtained by crushing the mill-like material or the flexible container waste material using the bag waste material as a raw material, heating and melting the material, and cutting the molten material.
(2) 95 to 5 parts by weight of milled or granular waste plastics (however, excluding milled or granular materials made from the above-mentioned waste of flexible container bags). It concerns things.
The present invention also provides (1) a flexible container bag which is crushed and compressed, a part of the crushed flexible container bag material is melted by frictional heat at the time of compression, and the molten material is cut into a mill-shaped flexible container bag. Milled material of bag waste material or flexible container bag waste material is crushed, heated and melted, the melt is cut, and granular material of the flexible container bag waste material is formed into granules in an amount of 5 to 95 parts by weight and (2) waste plastics (provided that And 95 to 5 parts by weight of a crushed product of a flexible container bag excluding waste material).
Further, the present invention provides (1) 5 to 95 parts by weight of crushed material of flexible container bag waste and (2) mill-shaped or granular waste plastic (however, excluding mill-shaped or granular material of flexible container bag waste). 95 to 5 parts by weight, which relates to a composition for molding a recycled product.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a cross-sectional view of an example of a flexible container bag waste material used in the present invention, FIG. 2 is an explanatory diagram of an example of a flexible container bag waste material used in the present invention, and FIGS. FIG. 4 is an explanatory diagram of an example of a recycled pallet according to the present invention, and FIG. 5 is an explanatory diagram of an example of a continuous automatic molding machine used in the present invention.
[0006]
【Example】
As shown in FIG. 1, an example of a cross section of the flexible container waste material 1 used in the present invention is a fusion of EVA films 3 and 3 on both sides of a polyester cloth 2 formed by plain weaving using polyester fiber yarns. A main body cloth 4 composed of a laminated sheet and a laminated sheet obtained by melting and fusing EVA films 3 and 3 on both sides of a polyester cloth 2 formed by plain weaving using similar polyester fiber yarns. The lining cloth 5 is joined.
[0007]
As shown in FIG. 2, one example of the configuration of the flexible container bag waste material 1 used in the present invention includes a main body cloth (outer bag) 4 and an inner lining cloth (inner bag) 5. The V-shaped wall 6 is joined to the outer bag 4 at the upper end 7 and a part 9 of the bottom 8 is joined to the outer bag 4. An air slide device is attached to the lower part 10 of the bottom 8 of the airbag 5, and when air is sent from the device to the inner bag 5, it leaks to the outer bag 4, the outer bag 4 expands, and the inside of the inner bag 5 is expanded. The granular material such as synthetic resin stored in the V-shaped wall 6 slides down the V-shaped wall 6 and is discharged to the outside.
[0008]
The mill-shaped or granular material of the flexible container bag waste material used in the present invention is obtained by crushing and compressing the flexible container bag waste material, melting a part of the flexible container bag waste material crushed by frictional heat at the time of the compression, and melting the molten material. It can be obtained by cutting the material into a mill-like material, or by crushing the flexible container bag waste material, melting it by heating, and cutting the melt to obtain a granular material.
[0009]
Next, an example of a method for forming a mill-like material will be described.
First, the entire collected flexible container bag waste material (waste flexible container bag) is crushed by a crusher or the like. What is necessary is just to crush in the form containing an inner bag, an outer bag, a hanging string made of polypropylene, and the like. There is no need to separate and separate each material. When crushing, the flexible container bag is made into pieces as much as possible, and the diameter thereof may exceed 10 mm, but it is preferable to crush the bag to 10 mm or less.
Next, the crushed material may be compressed, a part of the crushed flexible container bag may be melted by frictional heat generated during the compression, and the melt may be cut into a mill.
One example of a method for forming the mill-like material is to throw the crushed flexible container bag waste material from the hopper 12 of the screw compression granulator 11 as shown in FIG. When the screw 14 of the cylinder barrel 13 is driven to reduce the volume, the compression generates frictional heat due to friction of the flexible container bag waste material, and the frictional heat increases the internal temperature of the cylinder barrel 13 and partially melts. Is performed. For example, the EVA of the flexible container bag is melted. The partially melted material is discharged from the die 15 into, for example, a bar shape, and cut into an appropriate size to obtain a mill-like material (a partially melted and cylindrical shape).
[0010]
An example of a method for obtaining a granular material will be described.
Also in the case of the granular material, first, the entire collected flexible container bag waste material (discarded flexible container bag) is crushed by a crusher or the like. What is necessary is just to crush in the form containing an inner bag, an outer bag, a hanging string made of polypropylene, and the like. There is no need to separate and separate each material. The flexible container bag should be shredded as much as possible, and its diameter may exceed 10 mm, but it is better to crush it to 10 mm or less.
Next, the crushed material is heated and melted, and the melt is cut into granules.
One example of the method for forming the granular material is to put waste plastic container bags from a hopper 17 of an extruder 16 as shown in FIG. Then, the cylinder barrel 20 provided with a heating device (heater) 19 is heated by the heater 19, softened and kneaded, extruded from the die 21 into a rod shape with an appropriate diameter, for example, and cut into appropriate dimensions to form, for example, circular particles. .
In manufacturing the granular material, an extruder and a pellet manufacturing device can be used in combination as an extrusion molding device.For example, a method of extruding molten FIBC bag waste material from a die having a large number of holes and cutting and granulating the waste material. Alternatively, a strand-cut type granulator used in a method of extruding into a sheet shape and then cutting it vertically and horizontally to granulate can be used. The strand cut type granulation apparatus cools a strand extruded from a strand nozzle (number of holes is about several to about 250) attached to the tip of an extruder in a cooling bath, drains it with an air wiper, and then moves in a horizontal direction. It can be cut and pelletized (agglomerated).
[0011]
Regardless of whether it is a mill-like material or a granular material, as described above, the flexible container bag may be larger than 10 mm, but may be crushed to a diameter of 10 mm or less. Even those having a complicated structure can be efficiently melted by friction heat using a screw compression type granulator or pelletized as described above, and the cost required for regeneration can be reduced.
Therefore, the mixing and melting device having a plurality of stirring blades and a chamber capable of rotating the blades at high speed as in the conventional example is used to perform stirring and mixing, and the waste flexible bag is produced by frictional heat generated during the stirring and mixing. , Ie, the method of internal heating of the material itself is not required. Such internal heating tends to damage the material.
When a mill-like material is used, as described above, it is performed by a granulation method that does not rely on heat melting (external heating).
On the other hand, in the case of forming a granular material, as described above, the heating is performed using the heating device (heater) 23 by a granulation method using external heating.
In this case, various types of particles such as a dice, a sphere, and a flat sphere can be used and can be appropriately selected.
[0012]
In the above, granulation by an extruder has been described in the case of forming a granular material. However, a crushed flexible container bag is kneaded well by a kneading roller, and a plate having a thickness of several mm is cut into a cutting machine (pelletizer). May be made into substantially cubic particles.
On the other hand, in the case of forming a mill-like material, the extruder is provided with a heater in the same manner as in the case of forming a granular material, as shown in FIG. 3A, except that the heater is not used. May be.
[0013]
The mill-shaped or granular waste plastics used in the present invention are made of various types of plastics such as polystyrene, polypropylene, and polyethylene. It is made up of waste plastics, container plastics and plastics generated from processing steps such as cutting residue during molding, and used plastics discarded after use.
In the present invention, the waste plastics such as the waste plastics and the used recovered plastics are used as raw materials in the same manner to form mills or granules (however, the mill-like materials using the FIBC bag waste materials as raw materials). Or excluding particulate matter).
That is, the waste plastics are crushed and compressed, a part of the crushed waste plastics is melted by frictional heat at the time of the compression, and the melt is cut into a mill-like material. Is crushed, heated and melted, and the melt is cut into granules.
One example of a method for forming the mill-like material is to put the crushed waste plastics from the hopper 12 of the screw compression granulator 11 as shown in FIG. When the volumetric compression is performed by driving the screw 14 of the cylinder barrel 13 and frictional heat is generated in the waste plastics by the volumetric compression, the internal temperature of the cylinder barrel 13 rises and a part of the plastic is melted. The partially melted material is discharged from the die 15 into, for example, a bar shape, and cut into an appropriate size. As a result, a mill-like material (a part of a molten material having a cylindrical shape) of waste plastics can be obtained.
One example of the method for forming the granular material is to throw waste plastics from a hopper 17 of an extruder 16 as shown in FIG. Is heated by the heater 19 of the cylinder barrel 20 provided with a heating device (heater) 19, softened and kneaded, extruded from the die 21 into a rod shape with an appropriate diameter, and cut into an appropriate size to obtain, for example, a circular shape. Waste plastics granules can be obtained.
It is necessary to remove foreign substances and moisture from the waste plastics as necessary.
In the present invention, as described above, since the waste plastics are milled or granular, the waste plastics need not be composed of a single waste plastics, but rather are composed of materials having different MI (melting index). It is effective when it is.
[0014]
The recycled product molding composition according to the present invention comprises: (1) 5 to 95 parts by weight of a milled or granular waste of flexible container bag waste; and (2) 95 to 5 parts by weight of a milled or granular waste plastic. Consists of
When the amount of the milled or granular material obtained from the waste material of the flexible container bag of (1) is less than 5 parts by weight, compression molding, injection molding, extrusion molding, and the like of a mixture (mixed resin) with milled or granular waste plastics are used. During molding, or during heating and melting with an extruder, the temperature during molding and heating and melting during continuous molding such as a continuous automatic molding machine is reduced, and its fluidity is improved to reduce the thermal degradation of plastics. It is difficult to reduce the time required for cooling when molding a recycled product, and it is difficult to shorten the time required for various moldings such as compression molding, injection molding, extrusion molding, etc. Alternatively, even when the amount of granular waste plastics exceeds 95 parts by weight, the temperature during molding and heat melting is reduced, the fluidity is improved, the thermal deterioration of the plastics is suppressed, and the recycled product is molded. When Shortening the time required for retirement, and by extension, compression molding, difficult injection molding, it is possible to shorten the time required for molding such as extrusion molding.
In the present invention, as described above, by mixing the flexible container bag waste material with the waste plastics, the use of the flexible container bag waste material, which is relatively difficult to regenerate, can be expanded and promoted. As plastics, for example, it is also possible to promote the recycling of plastic containers and packaging that are required to be re-commercialized under the Containers and Packaging Recycling Law. The amount of the milled or granular material should be larger than that of the milled or granular waste plastics, but not to exceed 95 parts by weight. The amount of mill-like or granular material is larger than the amount of mill-like or granular FIBC bag waste, provided that it does not exceed 95 parts by weight. , It is possible to benefit both the playback.
[0015]
The composition of the present invention can be used for various moldings such as compression molding and injection molding. Mill or granular waste plastics are mixed at an appropriate ratio with mill or granular waste plastics, or mill or granular waste plastics and mill or granular FIBC waste are separated. May be weighed and supplied to the molding machine.
Molding For example, if the molding material for injection molding is put into the hopper as powder, the product injected by air entrainment etc. during plasticization tends to contain air bubbles and it may be difficult to mold. And waste plastics are in a form that is easy to regenerate mill-like or granular materials, and are in a form that is easy to handle without being bulky like powder.
The molding composition obtained according to the present invention can be used as a molding material for various recycled products. In addition, various molded articles can be obtained thereby.
For example, the composition according to the present invention can be used as a molding material for regeneration in compression molding, and various press molded articles can be regenerated by a compression molding machine (press molding machine). In general, compression molding is a method of putting a molding material into a heated mold, tightening the mold using a compression molding machine, heating and pressurizing, removing the mold, cooling, and removing a molded product.
The compositions according to the invention can also be used as molding materials for injection molding, extrusion molding and the like.
An example of a molded article is a pallet, and an example thereof is a pallet for cargo handling, transportation, and storage.
An example of the playback pallet will be described with reference to FIG. 4. The playback pallet 22 includes an upper deck 23, a lower deck 24, and a girder 25.
In addition, the present invention can also be applied to recycle molding into beer cases, containers, boxes (containers), etc. in addition to the pallets.
[0016]
The composition of the present invention, once cooled, is subjected to processing such as mill-like or granular, to form a molding material such as mill-like or granular, using the above compression molding, injection molding, Molding such as extrusion molding can be performed.
[0017]
The composition obtained according to the present invention may be formed by extruding the melt from a die 15 of an extruder and molding by a molding machine, but the obtained melt can be continuously molded by a continuous automatic molding machine. it can.
The continuous automatic molding machine is capable of continuously molding without stopping the extruder when transferring the mold after injecting the molten material (resin) into the mold. As shown in FIG. The extruder 16 can be operated continuously, and the plastic waste material can be efficiently regenerated, since 26 is set on a predetermined table and the operation is sequentially shifted upon completion of each operation.
In this operation, the mold is closed (by air pressure), the mold is clamped, and when the preparation for injection is completed, the injection valve is opened, the injection and filling are started from the extruder, and after the filling is completed, cooling is started. Then, after cooling is completed, the clamp is released, the mold is opened, and the product is taken out. As shown in FIG. 5, the mold 26 is set on a predetermined table. 53, during the product removal 54, and during the cooling 51, 54, 55, 56, and 57, the mold 26 is sequentially shifted, so that the mold 26 can be continuously operated with the extruder 16 and efficiently. Plastic waste can be regenerated.
In FIG. 5, reference numeral 27 denotes a valve.
[0018]
Various additives such as pigments, stabilizers, fillers, extenders, viscosity improvers, and resin reinforcing agents can be added to the recycled product molding composition of the present invention as needed.
[0019]
In the above embodiment, (1) milled or granular material of flexible container bag waste material and (2) mill or granular waste plastics (however, mill or granular material of the flexible container bag waste material is excluded) However, the present invention is also applicable to the case where one is a crushed material of a flexible container bag waste material or waste plastics and the other is a granular material of a flexible container bag waste material or waste plastics, The same applies as for solids or granular materials, and in this case also, the extruder is used to knead the waste material of one flexible container bag or waste plastics and the granular material of the other flexible container bag waste material or waste plastics with an extruder. -It can be heated and melted and molded by a molding machine, or both can be supplied to an injection molding machine at the above-mentioned specific ratio to perform molding such as injection molding.
[0020]
The present invention is not limited to a flexible bag made of a laminated sheet obtained by laminating a thermoplastic resin-based film on both sides of a stretched woven fabric made of the above-described thermoplastic resin, and is applicable to a flexible container bag of another configuration. it can.
To the molding composition of the present invention, pigments and the like can be added to the molding composition of the present invention, in addition to the waste of the flexible container bag and the waste plastics, as long as they can be properly used.
[0021]
【Example】
[0022]
Synthesis Example 1
Discarded polyester cloth sheet in which a 60 μm thick ethylene vinyl acetate copolymer (EVA) film is laminated on both sides of a discarded polyester denim polyester plain yarn woven so as to have a weft of 15 yarns / inch. The main body cloth and a 50 μ thick EVA film are laminated on both sides with 2,000-denier polyester flat yarn, which is plain-woven so as to have a length of 15 yarns / inch on both sides. A flexible container bag made of a sheet lined with a laminated sheet of EVA film of 60 μm is pulverized by a pulverizer into small pieces of 10 mm or less, and the pulverized flexible container bag is supplied to a screw compression granulator (screw diameter 110 mm). , Motor 22KW, rotation speed is continuously variable) The screw cylinder barrel is rotated at a motive to the flexible container bag waste reduced in volume compression. Since the internal temperature of the cylinder barrel increased, the partially melted flexible container bag waste was discharged from the die in a rod shape and cut to obtain a mill.
[0023]
Synthesis Example 2
Discarded polyester cloth sheet in which a 60 μm thick ethylene vinyl acetate copolymer (EVA) film is laminated on both sides of a discarded polyester denim polyester plain yarn woven so as to have a weft of 15 yarns / inch. The main body cloth and a 50 μ thick EVA film are laminated on both sides with 2,000-denier polyester flat yarn, which is plain-woven so as to have a length of 15 yarns / inch on both sides. A flexible container bag made of a sheet laminated with a 60 μm EVA film is pulverized by a pulverizer into small pieces of 10 mm or less, and the pulverized flexible container bag is extruded into an extruder (screw diameter 110 mm, maximum throughput). 450kg / hr, electric motor 22KW, rotation speed is continuously variable) The melt was extruded and granulated pellets at pelletizer.
[0024]
Synthesis Example 3
Instead of waste plastic container bags in Synthesis Example 1, used plastics made of various plastics such as polystyrene, polypropylene, and polyethylene were pulverized by a pulverizer into small pieces of 10 mm or less. The bag was reduced in volume with a screw compression type granulator to obtain a mill.
[0025]
Synthesis Example 4
In the Synthesis Example 2, used plastics made of various plastics such as polystyrene, polypropylene, and polyethylene in place of the waste plastic bag material are crushed by a crusher into small pieces of 10 mm or less. The bag was heated and melted by an extruder, the obtained melt was extruded, and pellets were granulated by a pellet manufacturing apparatus.
[0026]
Example 1
A compression molding machine was prepared by adding a composition obtained by adding 20 parts by weight of the waste material of the flexible plastic bag obtained in Synthesis Example 1 to 80 parts by weight of the waste plastics mill obtained in Synthesis Example 3 To produce a recycled pallet (dimensions: 1400 mm × 1100 mm × 150 mm) including a plate-like upper deck, lower deck, and girder portion.
The mold temperature during the compression molding was 210 ° C., the MI (melting index) value of the composition was 2.0, and the cooling time was 15 minutes.
[0027]
Comparative Example 1
Without adding the mill-like material of the waste plastic bag material, the mill-like material of the waste plastics obtained in Synthesis Example 3 was subjected to a compression molding machine, and the plate-like upper deck, lower deck, and girder portion were separated. A reclaimed pallet provided (dimensions: 1400 mm × 1100 mm × 150 mm) was formed.
The mold temperature during the compression molding was 260 ° C., the MI (melting index) value of the composition was 1.8, and the cooling time was 20 minutes.
[0028]
Example 2
A composition obtained by adding 20 parts by weight of the flexible container bag waste material obtained in Synthesis Example 2 to 80 parts by weight of the waste plastic particles obtained in Synthesis Example 4 was subjected to a compression molding machine. Thus, a reclaimed pallet (dimensions: 1400 mm × 1100 mm × 150 mm) having a plate-like upper deck, lower deck, and girder portion was formed.
The mold temperature during the compression molding was 200 ° C., the MI (melting index) value of the composition was 2.2, and the cooling time was 14 minutes.
[0029]
Comparative Example 2
Without adding the granular material of the flexible container bag waste material, only the granular material of the waste plastics obtained in Synthesis Example 4 was subjected to a compression molding machine to provide a plate-shaped upper deck, a lower deck, and a girder portion. A recycled pallet (dimensions: 1400 mm × 1100 mm × 150 mm) was formed.
The mold temperature during the compression molding was 260 ° C., the MI (melting index) value of the composition was 1.8, and the cooling time was 20 minutes.
[0030]
In the above-mentioned Example 1, Comparative Example 1, Example 2, and Comparative Example 2, the molding temperature (mold temperature) during compression molding, the fluidity {MI (melting index) value} of the molding material such as a composition, and the cooling time From the measured results, according to the present invention, compared to the comparative example, lower the temperature in compression molding, improve the fluidity during compression molding, for that, the time required for cooling, It can be seen that the time required for compression molding can be reduced.
[0031]
【The invention's effect】
The effects obtained by the typical inventions among the inventions disclosed in the present application will be briefly described as follows.
That is, according to the present invention, although it is a flexible container bag which is widely used as a transport bag for synthetic resins and foods and the like, as a result, the disposal ratio is high, the ethylene-vinyl acetate copolymer ( EVA tarpaulin) is melted, it is made of a material with a different MI (melting index), and the main fabric and the lining fabric are welded with a high-frequency welder, etc. Recycling of FIBC bags, which was considered difficult, can be performed, and recycling can be performed without the necessity of separating and separating the FIBC bags. The temperature at the time of molding and heating and melting at the time of continuous molding after heating and melting in the machine can be reduced, and also its fluidity is improved, and thermal degradation of plastics is suppressed, The time required for cooling when molding a raw product can be shortened, and thus, the time required for molding such as compression molding, injection molding, and extrusion molding can be shortened. Since the waste plastics are formed into a form that is easy to regenerate a mill-like or granular material, the handling of the molding resin can be facilitated, and good results can be given to the regeneration of the waste plastics.
ADVANTAGE OF THE INVENTION According to this invention, the use application of the flexible container bag waste material whose reproduction | regeneration is comparatively difficult is expanded by mixing a flexible container bag waste material and a waste plastic For example, it is possible to promote the recycling of plastic containers and packaging that are required to be re-commercialized under the Containers and Packaging Recycling Law.
[Brief description of the drawings]
FIG. 1 is a sectional view of an example of a flexible container bag used in the present invention.
FIG. 2 is an explanatory diagram of an example of a flexible container bag used in the present invention.
FIGS. 3A and 3B are explanatory views of an apparatus used for granulation showing an example of an embodiment of the present invention, respectively.
FIG. 4 is an explanatory diagram of a pallet showing an example of an embodiment of the present invention.
FIG. 5 is an explanatory diagram of an example of a continuous automatic molding machine used in the present invention.
[Explanation of symbols]
1: Flexible container bag
2. Polyester cloth
3. EVA film
4: Body cloth (outer bag)
5 ... lining cloth (inner bag)
6 V-shaped wall
7 ... upper end
8… Bottom
9 ... Part of bottom 8
10 ... lower part of bottom 8
11. Screw compression granulator
12… Hopper
13 ... Cylinder barrel
14. Screw
15 ... Dice
16 ... Extruder
17… Hopper
18 ... Screws
19 ... Heating device (heater)
20 ... Cylinder barrel
21 ... Die
22 ... Playback palette
23 ... Upper deck
24 ... Lower deck
25… Girder part
26 ... Mold
27 ... Valve

Claims (4)

(1) FLEXON bag waste material is crushed and compressed, a part of the crushed FIBC bag waste material is melted by frictional heat at the time of the compression, and a part of the melted material is cut into a mill to obtain a mill-like material. Or the crushed flexible container bag waste material, heated and melted, cut the molten material, granular material of flexible container bag waste material to be granulated 5 to 95 parts by weight,
(2) A recycled molding composition comprising 95 to 5 parts by weight of milled or granular waste plastics (however, excluding the milled or granular waste of the flexible container bag waste material). (1) FLEXON bag waste material is crushed and compressed, a part of the crushed FIBC bag waste material is melted by frictional heat at the time of the compression, and a part of the melted material is cut into a mill to obtain a mill-like material. Or the crushed flexible container bag waste material, heated and melted, cut the molten material, granular material of flexible container bag waste material to be granulated 5 to 95 parts by weight,
(2) A composition for molding a recycled product, comprising 95 to 5 parts by weight of a crushed product of waste plastics (however, excluding the waste material of the flexible container bag). (1) 5 to 95 parts by weight of crushed waste of flexible container bags,
(2) Recycled article molding composition comprising 95 to 5 parts by weight of milled or granular waste plastics (however, excluding milled or granular waste flexible container bags). The composition for molding a recycled product according to claim 1, 2 or 3, wherein the composition for molding a recycled product is a molding composition for a recycled pallet.

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