JP4069280B2 - Recycled plastic forklift pallet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention is a recycle molded from an intermediate product formed by crushing, crushing, mixing, heat fluidizing various plastics discarded from business offices, offices, homes, etc. The present invention relates to a forklift pallet using a plastic plate.
[0002]
[Prior art]
Conventionally, most forklift pallets are made of wood and some of them are used repeatedly, but many forklift pallets used when shipping roll paper from a paper mill are one-way pallets and stay at the buyer. In the end, it was purchased as fuel for a public bath boiler. These pallets were made of relatively good quality wood for use in transporting heavy objects.
On the other hand, waste plastics, wood scraps, fiber scraps, paper scraps, and other wastes are disposed of in large quantities from offices, offices, homes, etc., but the environment surrounding waste has changed, and in June 1995, “Separation related to containers and packaging” The Law Concerning the Promotion of Collection and Re-commercialization (Container Packaging Recycling Law) was enacted and promulgated, and the waste that had previously been considered stable has been changed to the management type, making it impossible to landfill easily. Recycling waste plastics has become an important issue.
As a representative of the recycling of waste plastics, the applicant of the present application utilizes it as a raw material for solid fuel as already proposed several times. This recycled solid fuel from plastics is widely used as a fuel for boilers such as dyeing and bleaching factories and cleaning stations, public baths and health centers, and as a fuel for lime and cement factories, ironworks, etc. Yes. In addition, the selected PET (polyethylene terephthalate) resin is used as a recycled fiber.
[0003]
[Problems to be solved by the invention]
The use of relatively high-quality timber for a one-way pallet or the like that is used only once is not preferable in terms of maintaining forest resources, and has been desired to be light in weight because of its large weight. On the other hand, in the case of plastics, there are many plastics that can be recycled and processed without using virgin resin in consideration of finite petroleum resources. Forklift pallet can be considered as one of them. In this way, there is a way to recycle waste plastic, but the only way to incinerate wood scrap, fiber waste, paper waste, and other waste.
[0004]
The present invention has been devised in view of the above, and is lighter than wood and produces thermal deformation and distortion by effectively utilizing waste plastics and wastes such as wood scraps, fiber scraps, and paper scraps from offices. In addition, it is an object of the present invention to provide a recycled plastic forklift pallet that can be nailed, has a strength sufficient to support heavy objects, and can be melted and used for molding.
[0005]
[Means for Solving the Problems]
The recycled plastic forklift pallet according to claim 1 of the present invention that achieves the above object comprises 70-30% by weight of various types of waste plastic crushed waste and 30-70% by weight of wood waste, fiber waste, and paper waste waste. in kneading machine connected mixer or to mixed while heating at 120 to 300 ° C. kneaded in the flowable state, the lower and upper recycled plastic plate made by molding the intermediate product of this fluid state into a plate It is used for a plate, and a plurality of connecting piece spacing pieces are attached between them, and the upper plate and the lower plate are formed with a plurality of connecting piece holes. The upper plate and the lower plate An inner seat and an outer seat are respectively formed around the connecting piece hole, and the connecting piece has inner screws at the upper and lower portions, and an upper end surface is attached to the inner seat of the upper plate. Cylindrical spacing pieces whose lower end faces are respectively abutted against the inner seats of the lower plate, and a cylindrical portion having outer screws that are screwed into the upper and lower inner screws of the spacing pieces and the outer seats. And a pair of upper and lower caps having a flange to be formed, and the spacing piece of the upper and lower caps sandwiched between the inner seat of the upper plate and the inner seat of the lower plate. It is characterized by being assembled by screwing it into the upper and lower inner screws .
[0006]
Accordingly, in the recycled plastic forklift pallet according to claim 1 having the above-described configuration, PP (polypropylene), PE (polyethylene), PS (polystyrene), PET (polyethylene terephthalate), PA, which are discarded from business establishments and households. (Polyamide), ABS (acrylonitrile butadiene styrene) and other plastics are collected in large quantities, and wood chips such as sawn wood chips and fiber scraps such as acrylic cotton that can only be discarded and incinerated from offices and homes Also, a large amount of paper scraps such as milk cartons and shredder dust are collected, and the raw materials for forklift pallets are secured in a form that is nearly free. These waste plastics and waste scraps are pulverized, blended in the range of 70 to 30% by weight and 30 to 70% by weight in a mixer or a kneading machine connected thereto, and heated at 120 to 300 ° C. and kneaded. It is produced into a flowable intermediate product whose strength and flexibility are appropriately selected by the blending ratio. From this intermediate product, recycled plastic plates formed by injection molding using metal molds, press molding, and extrusion molding become soft and soft when the amount of plastic increases, and become hard when the amount of scrap increases. There is a tendency to become somewhat resistant to heat. Furthermore, the nail hit by the plastic alone is easy to come off, but the nail stops better because of the waste waste. Also, the weight is reduced by about 1/2 compared to wooden.
[0007]
In the forklift pallet according to claim 2, the cap has a non-slip O- ring fitted in the groove on the upper surface of the flange .
[0008]
In the forklift pallet according to the third aspect of the present invention, the cap forms a screw-loosening piece on a part of its cylindrical portion .
[0009]
The recycled plastic forklift pallet according to claim 4 of the present invention, which achieves the above object, comprises 70-30% by weight of various waste plastic crushed waste and 30-70% by weight of wood waste, fiber waste, and paper waste waste. Mixing and kneading while heating at 120 to 300 ° C. in a mixer or a kneading machine connected to the mixer to make it flowable, and forming a recycled plastic plate formed by molding this fluidized intermediate product into a plate shape It is used for a plate, and a plurality of connecting piece spacing pieces are attached between them, and the upper plate and the lower plate are formed with a plurality of connecting piece holes. The upper plate and the lower plate An inner seat and an outer seat are respectively formed around the connecting piece hole, and the connecting piece has a screw groove or a plurality of parallel grooves on the inner side in the upper part and the lower part, and has an upper end surface on the upper side. Cylindrical spacing pieces that engage the inner seat of the upper plate and the lower end face against the inner seat of the lower plate, and the barbs that engage with the inner screw grooves or parallel grooves on the upper and lower sides of the spacing piece. A pair of upper and lower caps each having a cylindrical portion provided with a protrusion and a flange abutted against the outer seat, and the barbed protrusions of the upper and lower caps are connected to the inner seat of the upper plate. It is characterized by being assembled by engaging with the inner screw groove or parallel groove of the spacing piece sandwiched between the inner seat of the lower plate .
[0010]
In the forklift pallet according to the fifth aspect, the cap has a non-slip O- ring fitted in the groove on the upper surface of the flange .
[0011]
In the forklift pallet according to a sixth aspect of the present invention, the interval piece of the connecting piece forms a connecting column at the center of the upper and lower portions thereof, and the cap is connected and fixed to the connecting column with a wood screw.
[0012]
The recycled plastic forklift pallet according to claim 4 of the present invention, which achieves the above object, comprises 70-30% by weight of various waste plastic crushed waste and 30-70% by weight of wood waste, fiber waste, and paper waste waste. Mixing and kneading while heating at 120 to 300 ° C. in a mixer or a kneading machine connected to the mixer to make it flowable, and forming a recycled plastic plate formed by molding this fluidized intermediate product into a plate shape It is used for a plate and is configured by attaching a plurality of connecting piece spacing pieces between them, the connecting piece is made up of spacing pieces each having a flange at the upper and lower ends, and The upper plate and the lower plate are formed with a plurality of inner seats to which the flanges of the connecting pieces are abutted, and the upper and lower flanges of the connecting pieces are connected to the inner seats of the upper plate and the lower plates. The upper plate and the lower plate are fixed to the connecting piece with a nail or a wood screw at a portion corresponding to the inner seat while the connecting piece is sandwiched between the inner seats and the connecting piece is sandwiched between the inner seats. It is characterized by being assembled by doing .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a flowchart showing a molding and recycling operation from waste plastic, wood waste, fiber waste, and paper waste to a recycled plastic plate for forklift pallets according to the present invention. FIG. 2 is a first embodiment using the recycled plastic plate according to the present invention. FIG. 3 is a fragmentary sectional view of the forklift pallet. FIG. 4 is a fragmentary sectional view of the forklift pallet. FIG. 4 is a fragmentary sectional view of the forklift pallet according to the second embodiment. FIG. 6 is an elevational view of a crushing rotor of a plastic crusher used for the recycling molding operation of the recycled plastic plate, and FIG. 7 is a crushing rotor of a crushing machine for wood chips and the like used for the recycling molding operation. FIG. 8 is a partial sectional plan view of a kneading extruder used for the recycling molding operation of the recycled plastic plate.
[0016]
As shown in FIG. 1, in the formation of forklift pallets made of waste plastic and wood waste, fiber waste, and paper waste, PP (polypropylene), PE (polyethylene), PS (polystyrene), and PET (polyethylene) discarded from offices and homes. When various types of plastic P collected in large quantities such as terephthalate), PA (polyamide), ABS (acrylonitrile butadiene styrene) are large plastic waste, they are crushed into pieces by a crusher such as a rotary crusher. 6 is crushed into pieces P1 of 10 mm or less by a shearing type crushing and grinding machine 2 as shown in FIG.
[0017]
Plastics containing chlorine such as polyvinyl chloride are excluded from the various plastics P, and the generation of dioxins is prevented even at 300 ° C. where dioxins are likely to be generated during melting. Further, when the pulverized plastic P1 is wet or wet, it is heated from the outside of the casing with superheated steam or the like, and is put into a drier equipped with a spiral blade for stirring and transporting in the casing to adjust the moisture while being stirred and transported ( Dried) and then stored in a silo. In the silo, a rotating spiral blade is provided vertically to prevent a bridge from being generated during delivery. The silo is connected to the blending and mixing mixer M by a quantitative feeder 10 such as a screw conveyor or a vibro feeder through an on-off valve V at the opening of the bottom plate. The dried crushed plastic P1 flows smoothly.
[0018]
Also, a large amount of wood waste W such as sawn wood chips and fiber waste F such as acrylic cotton, and paper waste K such as milk cartons and shredder dust collected from a large amount of waste and collected from business offices and households, and large wooden furniture waste and carpets, rolls In the case of paper, it is crushed into pieces by a crusher such as a rotary crusher, and these pieces are further broken in the same manner as in the case of plastic, such as a shear type crushing crusher 2 as shown in FIG. 2 or a cutter type crusher as shown in FIG. 4 is crushed into strips W1, F1, K1 of 10 mm or less.
[0019]
When these crushed wastes W1, F1, and K1 are also wet or wet, they are heated from the outside of the casing with superheated steam or the like, and are put into the dryer D equipped with spiral blades for stirring and transporting inside the casing and stirred and transported. Then, the moisture is adjusted (in a dry state), and then stored in the silo C for each type. In the silo C, a rotating spiral blade is provided vertically to prevent a bridge from being generated during delivery. The silo C is connected to the blending and mixing mixer M by a screw conveyor or a quantitative feeder 10 of a vibro feeder through an open / close valve V at the opening of the bottom plate.
[0020]
The mixer M includes a stirring blade, and the pulverized plastic P1 and the crushed waste W1, F1, and K1 are stirred and mixed therein. In a molded product that requires strength in blending forklift pallet raw materials, the plastic component is blended to 70 to 30% by weight and the scrap component is blended to 30 to 70% by weight. When the amount of pulverized plastic P1 exceeds 70% by weight, it becomes weak and flexible, and when it is less than 30% by weight, the function of the plastic binder becomes weak and the strength decreases. Any one of the crushed wastes W1 to K1 or a mixture thereof is used.
[0021]
In the kneading machine 5 as shown in FIG. 8 connected to the mixer M, for example, 50% by weight of pulverized plastic P1 and 50% by weight of pulverized waste W1 are mixed while being heated to 120 to 300 ° C. with self-compression heat. It is kneaded and converted to an intermediate product N in a flowable state. A structure that is heated from the outside by superheated steam is also used. The intermediate product N is once formed into a dumpling lump and then put into a plate molding die MM incorporated in the press PR so as to be hot pressed into the recycled plastic plate 7. After the molding process, the recycled plastic plate 7 is allowed to cool in a flat place and is mass-produced without warping.
[0022]
As shown in FIGS. 2 and 3, the forklift pallet 7A according to the first embodiment using the recycled plastic plate 7 has a spacing piece 81 between a pair of upper and lower plates 71, 71 formed in the same shape as described above. The nine connecting pieces 8 are connected to each other. The plastic plate 71 is, for example, provided with nine connection piece holes 72 at equal intervals (a size larger than the fork width of the forklift) in a 1100 × 1300 mm size plate for 1 ton, and a plurality of weight reduction holes between them. 73 is formed, and reinforcing ribs 74 are formed in a lattice shape on one surface. The connecting piece 8 is made of the intermediate product N, plastic, aluminum, or the like, and has a cylindrical spacing piece 81 and a cylindrical portion 85 with an external screw 85A that is screwed into the screw 81A inside the upper and lower portions. It is composed of a pair of upper and lower caps 84, 84. The end face of the spacing piece 81 is in contact with the inner seat 72A around the hole 72 of the plate 71, and the flange 86 of the cap 84 is in contact with the outer seat 72B around the hole 72 in the plate 71. . A non-slip O-ring 86A is fitted in the groove 84B on the upper surface of the flange 86 of the cap 84, and a screw loosening stop segment 85B is formed in a part of the cylindrical portion 85. The forklift pallet 7A in which the plate 71 is sandwiched between the spacing piece 81 and the cap 84 and can be disassembled is reduced by about 1/2 in terms of cost and weight compared to a wooden product. In addition, a space piece 81 that can be assembled and disassembled is attached to the hole 72, and the space piece 81 can be disassembled and removed when storing and transporting the pallet, and can be compactly stacked.
[0023]
As shown in FIG. 4, the forklift pallet 7B of the second embodiment using the recycled plastic plate 7 uses a pair of upper and lower plates 71, 71 having the same configuration as that of the first embodiment. 9 is a drive-in type. The connecting piece 9 is also made of the intermediate product N, plastic, aluminum, or the like, but the cylindrical spacing piece 91 is connected with a screw groove or a large number of parallel grooves 91A on the inside of the upper and lower parts and also on the center part. Each of the pillars 91 </ b> B is formed, and the cap 92 includes a cylindrical portion 93 provided with a plurality of barbed protrusions 93 </ b> A that receive a relatively large force in the groove 91 </ b> A of the spacing piece 91 and a flange 94. . The end face of the spacing piece 91 abuts against the inner seat 72A around the hole 72 of the plate 71, and the flange 94 of the cap 92 abuts against the outer seat 72B around the hole 72 of the plate 71. . An anti-slip O-ring 94A is fitted in the groove 94B on the top surface of the flange 94 of the cap 92. After the plate 71 is sandwiched between the spacing piece 91 and the cap 92 by driving the cap 92, the connecting pillar 91B of the cap 92 and the spacing piece 91 is supplementarily connected and fixed by the wood screw S. The connection fixing structure can be omitted. In addition, a space piece 81 that can be assembled and disassembled is attached to the hole 72, and the space piece 81 can be disassembled and removed when storing and transporting the pallet, and can be compactly stacked.
[0024]
As shown in FIG. 5, the forklift pallet 7C of the third embodiment using the recycled plastic plate 7 is different from the above embodiment in that there is no hole for the connecting piece of the plate 7, and the spacing piece 95 is arranged on the upper and lower plates 71 ′, It has a simple structure in which it is sandwiched between 71 'and fixed with nails or wood screws S. The end flange 96 of the spacing piece 95 is fixed with a plurality of nails and wood screws S while being in contact with the inner seat 72A ′ of the plate 71 ′. The spacing piece 95 is formed by the intermediate product N at low cost.
[0025]
Referring to FIG. 6, an example of the crushing and crushing machine will be described. The shear crushing and crushing machine 2 has arrows R1 and R2 in a substantially rectangular parallelepiped casing having a plastic input opening on the upper side and a discharge port for debris on the lower side. As shown in Fig. 2, the blades mounted in the longitudinal direction so as to overlap each other with the two rotary shafts 20 and 20 that are rotationally driven at an inconstant speed so as to bite from top to bottom The mounting rotor 25... And an arcuate shape that is engaged from above and below with a longitudinal member fixed in parallel to the shaft 20 on the inner side of each side wall of the casing and coupled to each other by tie bolts and close to the spacer 30 of the rotor 25. It is comprised from the bearing scraper provided with the part, and the rotational drive apparatus of each axis | shaft 20 and 20.
[0026]
Each crushing blade rotor 25 has a hook-like crushing blade 26 positioned on the rotary shaft 20 with a key so as to alternate in the axial direction so as to perform a shearing action close to that of the other rotary shaft 20 while rotating. The crushing blade 26 is attached to the rotary shaft 20 with a spacer 30 slightly wider than the crushing blade 26.
The crushing blade 26 has four hook-shaped portions 26A formed every 90 degrees, and is divided into two along the center line L so as to be point-symmetric with respect to the center of the rotating shaft 20. Therefore, the divided crushing blade pieces 27 have the same shape. Further, a connecting hole 26C and a screw hole 26D are formed in a direction orthogonal to the center line L from the peripheral surface 26B other than the hook-like portion 26A, and the divided crushing blade piece 27 is formed into an integrated crushing blade 26 by the connecting bolt 28. Connected and fixed.
[0027]
The spacer 30 is divided into two symmetrically with respect to the center line L ′ orthogonal to the center line L, and the connecting hole 30C is divided from the peripheral surface 30B in the direction orthogonal to the center line L ′. Further, screw holes 30D are formed at both ends of the divided spacer piece 31 ′, and the divided spacer pieces 31, 31 ′ are connected and fixed to the integrated spacer 30 by connecting bolts 32. In this case, the head of the connecting bolt 32 faces the same direction, and the tightening operation is efficient. Similarly to the crushing blade 26, the spacer 30 can also be divided into two along the center line L ′ so as to be point-symmetric with respect to the center of the rotating shaft 20, giving compatibility between the divided pieces and reducing maintenance costs. It can be reduced.
[0028]
In FIG. 7, the cutter-type crushing and crushing machine 4 is bitten from the top to the bottom as shown by an arrow R3 in a substantially rectangular parallelepiped casing 40 having a plastic inlet opening on the upper side and a discharge port 4B for debris on the lower side. A rotary shaft 41 that is rotationally driven so as to be embedded, a substantially rectangular parallelepiped cutter blade 43 that is fixed at a 180-degree symmetrical position around the rotor 42 that is fixed to the shaft 41 with a key, and a blade that is close to the blade 43. A fixed blade 44 fixed to the casing 40 at a position, a screen 45 attached to the discharge port 4B around the rotor 42, and a pusher 46 for feeding a piece of wood between the blades 43, 44. This cutter-type crushing and grinding machine 4 is also used for crushing plastic P, fiber waste F, and paper waste K. The fiber waste F and paper waste K are also pulverized by the shear-type crushing and pulverizing machine 2.
[0029]
In FIG. 8, a self-heating type kneading machine 6 as an example of a kneading machine has an input opening 6A for a prepared mixed intermediate above one end and an outlet 6B for a dissolved substance at the other end. Two long and short rotating rotors 61 and 62 that are driven to rotate at a constant speed so as to be engaged from the top to the bottom as indicated by arrows R4 and R5 in the casing 60 having an elliptical cross section, and for each rotor 61 Spiral blades 63 and 64 mounted in the circumferential direction and the longitudinal direction so as to overlap each other, a mortar 65 attached near the discharge end of the long rotating rotor 61, a delivery spiral blade 66, and each rotor 61, 62, and the squeezing ring 66 is installed in the casing 60 so that the inclined guide wall 6C surrounds the mortar body 65 with a small gap on the end face side of the short rotary rotor 62. It has been kicked. A pipe 67 to which heating steam or cooling water is supplied is provided around the casing 60 in order to adjust the temperature in a complementary manner. The mixer M may be omitted, and the kneading machine 6 may perform mixing and mixing. Various molded articles 7 are formed by changing the mold MM.
[0030]
As apparent from the above description, according to the recycled plastic forklift pallets according to claims 1, 4, and 7 of the present invention, 70 to 30 wt% of various waste plastic crushed waste and 30 Mixing and kneading up to 70% by weight of wood waste, fiber waste and crushed paper waste with a mixer or a kneading machine connected to the mixer at 120 to 300 ° C. to make it flowable, and this fluid intermediate product PP and PE that are discarded from offices and homes because recycled plastic plates made by molding the plate into plates are used for the upper and lower plates and a plurality of spacing pieces are attached between them. A large amount of various plastics such as PS, PET, PA, ABS, etc., and wood chips such as sawn wood chips and acrylic cotton that could only be discarded and incinerated from offices and homes A large amount of paper scraps such as fiber scraps, milk cartons and shredder dust are also collected in large quantities, and raw materials for forklift pallets are secured in a form that is nearly free. These waste plastics and wastes are reduced not only in cost but also in weight by about 1/2 compared to wood. Since wood waste, fiber waste, and paper waste are mixed in addition to waste plastic, thermal deformation and distortion do not occur, and nailing is also possible. In particular, when the recycled plastic plate according to claims 1 and 4 is formed by a plate mold, a plurality of holes are formed, and interval pieces that can be assembled and disassembled are attached to the holes, and the pallet is stored and transported. Sometimes spacing pieces can be disassembled and removed for compact stacking.
[Brief description of the drawings]
FIG. 1 is a flowchart showing a molding and recycling operation from waste plastic, wood waste, fiber waste, and paper waste to a recycled plastic plate for a forklift pallet according to the present invention.
FIG. 2 is a partially cutaway perspective view of the forklift pallet of the first embodiment using the recycled plastic plate according to the present invention.
FIG. 3 is a cross-sectional view of a main part of the forklift pallet.
FIG. 4 is a cross-sectional view of a main part of the forklift pallet according to the second embodiment.
FIG. 5 is a sectional view of an essential part of the forklift pallet according to the third embodiment.
FIG. 6 is an elevational view of a crushing rotor of a plastic crusher used for the recycling molding operation of the recycled plastic plate.
FIG. 7 is an elevational view of a crushing rotor of a crusher for wood waste or the like used in the recycling molding operation.
FIG. 8 is a partial cross-sectional plan view of a kneading extruder used for the recycling molding operation of the recycled plastic plate.
[Explanation of symbols]
2 Crusher 5 Kneading machine 7 Recycled plastic plate 7A Forklift pallet 7B of the first embodiment Forklift pallet 7C of the second embodiment Forklift pallet 8 of the third embodiment Connection piece 9 Connection piece 10 Fixed quantity feeder 71 Pallet plate 72 Connection Hole for piece 73 Lightening hole 74 Reinforcement rib C Silo D Dryer M Mixer MM Mold N Intermediate product P Waste plastic P1 Ground plastic PR Press machine F Waste fiber waste F1 Ground fiber waste K Waste paper waste K1 Ground paper waste V Opening and closing valve W Waste wood waste W1 Ground wood waste

Claims (7)

70 to 30% by weight of various waste plastic crushed waste and 30 to 70% by weight of wood crushed waste, fiber waste, and paper waste crushed waste are mixed while heating at 120 to 300 ° C. in a mixer or a kneading machine connected thereto. Kneaded to make it flowable, and a recycled plastic plate made by molding this fluidized intermediate product into a plate shape is used for the upper and lower plates, and a plurality of connecting piece spacing pieces are attached between them. In the recycled plastic forklift pallet in which a plurality of connecting piece holes are formed in the upper plate and the lower plate, an inner seat and an outer seat are provided around the connecting piece holes of the upper plate and the lower plate, respectively. The connecting piece is formed in a cylindrical shape having inner screws on the upper and lower portions, and having an upper end surface that is in contact with the inner seat of the upper plate and a lower end surface that is in contact with the inner seat of the lower plate. And a pair of upper and lower caps having a cylindrical portion provided with an external screw that is screwed to an inner screw at the upper and lower portions of the interval piece, and a flange that is abutted against the outer seat. The upper and lower caps are assembled by screwing the outer screws of the upper and lower caps to the upper and lower inner screws of the spacing piece sandwiched between the inner seat of the upper plate and the inner seat of the lower plate. Recycled plastic forklift pallet. The forklift pallet according to claim 1 , wherein the cap has a non-slip O- ring fitted in a groove on an upper surface of the flange . The forklift pallet according to claim 1 or 2 , wherein the cap is formed with a screw-loosening piece in a part of a cylindrical portion thereof . 70-30% by weight of various waste plastic crushed waste and 30-70% by weight of wood waste, fiber waste, and paper waste ground waste are mixed while heating at 120-300 ° C. in a mixer or a kneading machine connected thereto. Kneaded to make it flowable, and a recycled plastic plate made by molding this fluidized intermediate product into a plate shape is used for the upper and lower plates, and a plurality of connecting piece spacing pieces are attached between them. In the recycled plastic forklift pallet in which a plurality of connecting piece holes are formed in the upper plate and the lower plate, an inner seat and an outer seat are provided around the connecting piece holes of the upper plate and the lower plate, respectively. The connecting piece has a thread groove or a plurality of parallel grooves on the inner side at the upper part and the lower part, and has an upper end surface on the inner seat of the upper plate and a lower end surface on the inner seat of the lower plate. Cylindrical spacing pieces that are fastened to each other, a cylindrical portion having a barb-like projection that engages with an inner screw groove or a parallel groove on the upper and lower sides of the spacing piece, and a flange that is fastened to the outer seat A pair of upper and lower caps each having an upper screw, and an inner screw of the spacing piece that sandwiches the hook-shaped projections of the upper and lower caps between the inner seat of the upper plate and the inner seat of the lower plate A recycled plastic forklift pallet assembled by engaging with a groove or a parallel groove . The forklift pallet according to claim 4 , wherein the cap has a non-slip O- ring fitted in a groove on an upper surface of the flange . The forklift pallet according to claim 4 or 5 , wherein the interval piece of the connection piece forms a connection column at a central portion of the upper and lower portions thereof, and the cap is connected and fixed to the connection column by a wood screw . 70-30% by weight of various waste plastic crushed waste and 30-70% by weight of wood waste, fiber waste, and paper waste ground waste are mixed while heating at 120-300 ° C. in a mixer or a kneading machine connected thereto. Kneaded to make it flowable, and a recycled plastic plate made by molding this fluidized intermediate product into a plate shape is used for the upper and lower plates, and a plurality of connecting piece spacing pieces are attached between them. In the recycled plastic forklift pallet, the connecting piece is composed of spacing pieces having flanges at the upper and lower ends, respectively, and the flange of the connecting piece is stopped by the upper plate and the lower plate. A plurality of inner seats are formed, and the upper and lower flanges of the connecting piece are respectively brought into contact with the inner seat of the upper plate and the inner seat of the lower plate, and the inner seats are Play plastic forklift pallet, characterized in that it is assembled by fixing to the connecting piece by nails or wood screws in the upper and lower plates in a state sandwiching the connecting piece corresponding to their inner seat portion.

Images