TWI278476B - Manufacturing method for recycling PE/PP cross-linked plastic material - Google Patents

Abstract

A manufacturing method for recycling PE/PP cross-linked plastic material is disclosed, which mainly comprises the steps of crashing and melting the cross-linked foamed plastic waste into glue-like plastic material to further extrude in a strip shape by a first crasher and a first extruder, respectively; using an air-cooled palletizing mold head to cut the strip shape of plastic material into pellets, and a volatile component, as foaming agent, in the gel-like plastic material is removed via a dust filtration box; then, using a second crasher and a second extruder to crash and melt the material obtained in the previous step into semi-fluid gel-like plastic material and then to extrude in a strip shape under high pressure; and then, using an oil-pressure mold net and a palletizing mold head to cut the strip shape of plastic material into pellets; finally, using a vibration water through to cool the pellets into solid, which is sent to a material collection tank. According to the above-mentioned manufacturing method, the plastic material with large scale network molecular structure is recycled and manufactured into plastic regeneration pellets with smaller cross-linking density and small pellet sizes by a shear stress of extrusion and pelletization, so that the plastic regeneration pellets can be recycled and reused.

Description

1278476 _ Case No. 89116225_年月日日倏正 _ 5, invention description (1) [Technical field of invention] A "PE / PP bridging plastic material recycling manufacturing method", especially a two-stage smash, In the process of extruding, the waste material of the plastic foaming product of the bridge network structure type is recovered and recycled into a recycled material of a plastic material of a small particle structure of a cross-linking degree (gel content) and can be processed again. The use of raw materials for other items to achieve environmental protection and to develop added value. [Prior Art] The structure of the bridge or structure is composed of the PE of the linear compound and the foaming of the CP polymer into a gas. The composition of the polymer in the polymer is a compound of the polymer, and the α/α Zhu bridge property can be understood. The plastic material is used to make a bridge between the C-type macromolecules or the #丝丝/丨刀八木合 molecules in the electron beam for polymerization. The social goods ^ ~ κ i X knife creates a bridge between the polymer molecules. , the macromolecular transformation into a reticular or stereoscopic molecular oleo 2 σ molecular molecular physico-mechanical properties and the polymer melt and thus the polyfoam material is a thermoplastic between plastic and soft: variable properties; Bridge, general plastic materials such as Ρ Ε, ρ ρ, 4 .

Ε, etc., when heated, the temperature rises up to EvA, and the viscosity of EPDM drops sharply. When the foaming point or melting point is used, the type of polymer solution is required to have a suitable disadvantage; because bubbles are formed, Polyolefins, special properties and elasticity, in order to keep the foam forming a large amount of bridging agent or ^ is a crystalline polymer p E to create a bridge to increase the melt 2 beam irradiation, so that the poly melt is suitable for foam molding The temperature range is elastic, which in turn expands the general PE/PP plastic material through the °, =t to change the molecular structure of the beam irradiation or chemical frame I into a variety of foam materials, wooden bridge PE / p P material Foaming material in the process

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The amount of unreasonable waste generated in the process is quite large, and the waste or defective products remaining during reprocessing are directly recovered. The current technology does not treat the above-mentioned foamed plastic material waste, so the waste is re-discovered. Most of the use is in the form of burning or burying [invention content ^ into environmental pollution and waste disposal problems. The method of adding t ί is sensitive to the residual waste i^ ε/ρ ρ bridging polymer foaming material produced by adding electronic energy or chemical addition to the plastic raw material; thus, it can not be recycled and is environmentally friendly. The serious problem of the problem, and finally create a Ϊ:: ί i, and 1 person engaged in the industry for many years, this method of recycling of bridge plastic materials recycling manufacturing methods. The material of the reverse two & method is mainly to crush the 1 ^ / 1 ^ bridging foam plastic pieces (# crusher, and send the scrap to the first - extruded = body gelatinous plastic and extruded into strips Shape, then from m into + fine particles and air-cooled, extruded at the same time borrowed: in which most of the volatile components (azo is packaged = released and removed = minced and second extruder The second time, the two pieces are broken into pellets by a hydraulic die and a pelletizing die, and the granular plastic is cooled to a solid by a chopped air. After that, it can be fed into a set of materials (two or by the above-mentioned manufacturing method, which can be cut by extrusion and granulation, and made into a small bridge by the plastic waste of the network structure: the running bridge material, Chad Recycling is reused in hot press forming or:::η, glue t,

1278476 Case No. 89116225 A_Ά 修正 Amendment V. Description of invention (3) to reduce environmental pollution and to create added value. Therefore, the main object of the present invention is to provide a plastic reclaimed material which is obtained by recycling a large-sized mesh-like molecular structure plastic waste into a polymer structure (small bridge-like small particle shape) close to the primary raw material. Reduce environmental pollution and can be used to remanufacture other products to create added value. [Embodiment] In order to make the present invention more clear and detailed, the following detailed descriptions are as follows: First, referring to the first figure, the manufacturing method of the present invention mainly includes the following steps, which will be described as follows: (a) by a first pulverizer 1, the pieces of foamed plastic waste to be recovered (the degree of bridging of the waste is between 40 and 60 and fluffy foamed) are then broken into small pieces of plastic. And preventing the scrap from being returned from the extruder; (b) melting the pulverized scrap into a semi-fluid gelatinous plastic by a first extruder 2 connected to the outlet of the first pulverizer 1, and then A squeezing machine 2 extrudes the molten plastic in a strip shape to remove the air contained in the material and break the bridging bonding pattern between the molecular chains (the working temperature is about 150 ° C to 2 40 ° C Between the working pressures is between about 205 and 650 psi; the extruder 2 is provided with a specially designed coaxial propeller screw in a thermowell and at the outlet of the hot melt casing The end is provided with a breaker having a plurality of perforations (aperture about 5 mm left) ), (C) by a (air-cooled) pelletizing the first extrusion die 3 by pressing machine

Page 7 1278476 Case No. 89116225 A_ 曰 Amendment 5, invention description (4) The strip shape is about 2 mm granular, and the knot is poor at this time; (d) the foam material is added, and the filter box is used. Dyeing; (e) the second powder (f) is connected to the second bet at 1 2 5 ° C ~ ), in the gel of the first fluid), the second melt extrusion is extruded into a strip of broken molecular chains Molecular plastic (g) plastic cut about mm), slip, tight (h) cut into fine), and cut the number of bridges in the melt containing molten plastic filtered to cool The above particles are broken and prevented from passing through the second exit 6 (two extruder 6 with 2400 °C, and the second melted plastic is made of plastic like plastic; When it is broken into fine pieces, its bridging density is higher at this time; and it is chopped into powdery flaky particles (the particle size is about 5 legs, and the thickness is broken while being cooled by air to become a solid particle between 1 5 and 2 0, the surface is relatively Rough, the high temperature, high pressure generated during the extrusion process, the release of pressure from the chemical such as Azodicarbonamide leaving the die And the released, but the air is discharged, and the plastic which does not cause the stain is passed through a second pulverizer 5, and the scrap is returned from the extruder; the pulverized plastic is connected to the second pulverizer 5 The extruding machine has the same structure, and the working temperature and working pressure are about 500~2500 psi, and the second pulverized plastic is melted into a small number of small pushers on the screw (breaker). The hole height is further removed to remove the air and the junction state contained in the material to be reduced to be closer to the original substrate. The oil die network 7 and the pelletizing die 8 will be strip-shaped particles (having a diameter of about 5 mm, thickness) About 2 degrees can be reduced to between 6 and 10, and the surface of the relatively light granular plastic passes through a vibrating sink 9

Page 8 1278476 _ Case No. 89116225_ Year Month 曰 Amendment 5, invention description (5) Cooling into a solid (or directly cooled by air); (i) Cooling into a solid piece of plastic into a collection The barrel (bag) 10 is stored to complete the recycling of the PE/PP bridging polymer foam material. According to the above method, according to the above manufacturing method, a waste of a p E/PP bridging polymer foam material is melted and extruded through the first extruder 2, and the feeding precautions such as PE/PP regrind ), the large meshed bond is broken into a simple small volume compression. In addition, the pressure is released, so that the volatile substances in the dust box are released from the structure during the melting and extrusion process. (a) Feeding (all applicable; type molecular structure to break the molecular bonding state, and open the die, because the foaming agent added in the previous material is removed with water and air to prevent such foaming The agent re-generates the foaming phenomenon', so that the plastic bridging type can loosen the foaming material Ma Wennan pressure and (azo-based chemical agent), and can melt most of the second extruder 2 to affect the plastic recycling. Bottom: No bridge here or not

The better, (so) the original mouse / no impurities, water plastic is necessary for the pre-treatment of the extruder screw life, that is, to avoid rain and dust; sex, after the part of the n, after granulation is completed If you want to increase the flow of plastic (d) ★ Reuse the new material. 1 2 0 °c - 2 4 0 v The operating temperature of the second extruder and the second extruder is about the same as above, the working pressure is about Μ 〇~Μ 〇〇PS丨. Because in the first =, after the first extrusion and granulation of the recycled plastic particles, the waste from the armor contains a large amount of bubble gap and foaming agent,

Page 9 1278476 _ Case No. 89116225 _ _ _ _ _ _ _ _ _ _ _ _ _ _ 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 It cannot be used as a recycled raw material for manufacturing other articles; therefore, the method of the present invention needs to remove some volatile substances when the recovered plastic particles are removed from the die, and then melt and extrude through the second extruder 6. In the second melting and extrusion process, the molecular form of the plastic material can be reduced to a more compact and advanced material of the primary raw material, which is directly (or added some primary raw materials). After) for the manufacture of other secondary products (such as: cloth, paper core tube or luggage lining support plate, table and chair foot pads, aluminum frame corners, etc.). - Furthermore, since the plastic waste can be recycled, the surplus waste or defective product generated during the process of reprocessing or reprocessing the 高分子 E / Ρ truss bridge polymer foam material can be recycled as recycled raw materials. It can be used to make other useful products; for manufacturers, it can reduce manufacturing costs; and for the environment, waste can be recycled and reused to reduce environmental pollution. In summary, the manufacturing method disclosed in the present invention is the past and does not achieve the above-mentioned effects, and has the essentials of the invention patent, and is filed according to law, applying for an invention patent, and expecting the bureau to review and grant the patent. For the pray.

Page 10 1278476 曰Revision_Case No. 89116225_± BRIEF DESCRIPTION OF THE DRAWINGS The second drawing of the present invention is a simple description of the part number of the present invention. _ _ a pink stone machine 1 air-cooled pelletizing die 3 Second pulverizer 5 Hydraulic die net 7 Vibration sink 9 Manufacturing method Schematic diagram Flow chart -_ Extruder 2 Dust box 4 No. - Extruder 6 Pellet die 8 Collector 1

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Claims (1)

1278476 • 2 Case No. 89116225 VI. Patent Application No. 1. A type of ♦I 曰 correction £ A PE method, (fragmentation (after pulverization, the fuse will melt and break, the inner tube of the fuser is in The solid is rough, (previously used by the foaming agent, etc. (the second (or PP its main a) the waste of the small stone b), the molecular work of the crushing and melting is set to c) the broken joint d) Can evaporate air e) smash f) PE/PP bridging plastic W re-recycling, especially the return of plastic materials through bridging processing and foam forming materials, including: The first pulverizer will be recycled The foaming plastic waste material has a bridging degree between 40 and 60 and is fluffy foamed) and re-sliced plastic, and prevents the scrap material from flowing back from the extruder; by connecting the first crusher outlet An extruder extrudes the material into a semi-fluid gelatinous plastic, and then extrudes the first extruded plastic into a strip shape to remove the bridging bonding pattern of the air contained in the material (the operating temperature is 150 ° ° C~2 4 0 °C Pressure at 2 5 0~6 5 0 psi The extruder is attached to a hot coaxial propeller screw, and a baffle is provided at the outlet end of the hot melt pipe to have a plurality of perforations; and an air-cooled pelletizing die is used to extrude the strip by the first extruder Fine-grained particles, and cooled to air by air cutting at the same time, the bridging degree is between 15 and 20, and the surface is relatively poor; when the granular plastic leaves the die, the pressure is released. The chemical additive contained in the foaming material which is subjected to high temperature and high pressure is released, and is filtered by a filter box to discharge the cold without causing pollution; the granular plastic is passed through a first The second pulverizer is carried out to prevent the scrap from being returned from the extruder; after the second pulverization, the plastic is connected to the second pulverizer Page 12 1278476 _: _ case number 89116225 _ _ _ _ _ 6, the scope of the patent application - the second extruder (its working temperature is between 1 2 5 ° C ~ 2 4 ° ° C, working pressure is 5 0 0~25 OOpsi), the second pulverized plastic is melted into a semi-fluid gel in the second extruder, and the second molten plastic is passed by the baffle through the propeller screw provided in the second extruder The plurality of small holes are extruded at high pressure into a strip-like plastic to further remove the voids contained in the material and the bridging bonding pattern of the damaged molecules, so as to be reduced to a polymer plastic closer to the original substrate; Afterwards, the shovel is cut into fine-grained granules by a hydraulic pressure net and a granulated head. At this time, the bridging degree can be reduced to between 6 and 10, and the surface is smooth and connected. (h) The plastic that is chopped into powder granules is cooled by a vibrating trough to form a solid (or directly cooled by air); (i) a fine piece of plastic that is solid after cooling It is sent to a collection of barrels (bags) for storage to complete the recovery of PE/PP bridging polymer foam materials. . Page 13 1278476 Page 1278476 Case No. 89116225_Years and Months _ VI. Designation of Representative Representatives (1) The representative figure of this case is: The second figure (2), the representative symbol of the representative figure of this case is a simple description ΪΒΒ Page 3