CN107571422A - Waste plastic regenerating and pelleting technique - Google Patents
Waste plastic regenerating and pelleting technique Download PDFInfo
- Publication number
- CN107571422A CN107571422A CN201710964567.4A CN201710964567A CN107571422A CN 107571422 A CN107571422 A CN 107571422A CN 201710964567 A CN201710964567 A CN 201710964567A CN 107571422 A CN107571422 A CN 107571422A
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- China
- Prior art keywords
- waste plastic
- mixer
- waste
- added
- regenerating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The present invention provides a kind of waste plastic regenerating and pelleting technique.The waste plastic regenerating and pelleting technique includes the steps such as buying waste plastic, auxiliary agent batch mixing, mixing raw materials, single screw rod melting extrusion, twin-screw melting extrusion, water ring pelletizing.The technical problem for the unstable product quality that the recycled plastic granules that the waste plastic regenerating and pelleting technique provided by the invention solves prior art are produced.
Description
Technical field
The present invention relates to plastic applications, and in particular to a kind of waste plastic regenerating and pelleting technique.
Background technology
In the prior art when producing HDPE drainage pipeline products, used raw material are mainly HDPE regeneration particles.
The production technology of recycled plastic granules mainly includes the steps such as cleaning, drying, single screw rod heating extrusion, water ring pelletizing in the prior art
Suddenly.The problems such as moisture height, raw material insufficient strength, tensile property be low be present.
When producing HDPE double-wall corrugated pipes, it is also necessary to filler parent granule is additionally added, due to filling master batch and PE regeneration
Granule density differs greatly, that is, substantially increases the step of mixing, is also difficult to ensure that in feeding well mixed, causes the product produced
Quality is highly unstable.
The content of the invention
To solve the technical problem for the unstable product quality that the recycled plastic granules of prior art are produced, the present invention carries
For a kind of waste plastic regenerating and pelleting technique to solve the above problems.
A kind of waste plastic regenerating and pelleting technique, comprises the following steps：
Step 1：The waste plastic cleaned is purchased, it is classified, selected, is respectively placed in pond and filters, dries, make
It is stand-by for raw material；
Step 2：A certain amount of activated Calcium carbonate is poured into mixer, and auxiliary agent is added after mixer startup, at a high speed
Mix certain time；
Step 3：The part raw material is added into the mixer, compound is obtained after mixed on low speed certain time, taking-up is treated
With；
Step 4：The part compound is added into the mixer, after mixed at high speed certain time, added to Single screw extrusion
The feed end of machine, heat melting extrusion；
Step 5：The discharge end of the single screw extrusion machine is directly accessed the feed end of flat double screw extruder, and heating is molten again
Melt extrusion；
Step 6：The discharging of the flat double screw extruder is connected to Water ring granulator, and extruded stock obtains pellet through pelletizing；
Step 7：To the dewatering particle collectionses, sorting, drying, finished product is obtained.
In a kind of preferred embodiment of waste plastic regenerating and pelleting technique provided by the invention, after being filtered in the step 1
Precipitation is passed through precipitation process facility and handled, and the little particle waste material separated is added to the raw material of corresponding species, separation
The water obtained is added to the pond.
In a kind of preferred embodiment of waste plastic regenerating and pelleting technique provided by the invention, used in the step 2
The activated Calcium carbonate of 1250 mesh.
In a kind of preferred embodiment of waste plastic regenerating and pelleting technique provided by the invention, in the step 3, when
After being down at a temperature of the mixer at 80 DEG C, the raw material is added into the mixer, mixed on low speed is after 3 to 5 minutes
Compound is obtained, taking-up is stand-by, and mixing temperature is no more than 100 DEG C.
In a kind of preferred embodiment of waste plastic regenerating and pelleting technique provided by the invention, described in the step 4
High-speed mixer mixes 4 minutes.
In a kind of preferred embodiment of waste plastic regenerating and pelleting technique provided by the invention, the step 4 and described
In step 5, Head material caused by the single screw extrusion machine, the flat double screw extruder, add after crushing to the original
Material.
In a kind of preferred embodiment of waste plastic regenerating and pelleting technique provided by the invention, in the step 7, institute
The water that dewatering particle collectionses obtain is stated to add to the Water ring granulator.
In a kind of preferred embodiment of waste plastic regenerating and pelleting technique provided by the invention, described in the step 1
Raw material includes but is not limited to HDPE waste materials, PP waste materials, POE waste materials.
In a kind of preferred embodiment of waste plastic regenerating and pelleting technique provided by the invention, HDPE waste materials, PP waste materials,
The ratio of POE waste material threes is 100：5-25：3-5；
Or 5-25：100：3-5.
In a kind of preferred embodiment of waste plastic regenerating and pelleting technique provided by the invention, described in the step 2
Auxiliary agent includes but is not limited to filler, lubricant, photomask agent, antioxidant, coupling agent, graft.
Compared to prior art, the waste plastic regenerating and pelleting technique provided by the invention is provided with the Single screw extrusion
Machine, row extrusion, the pelletizing again after preliminary melting, while eliminate the broken link before extrusion, the link of filtering after extrusion.
Also allow and pelletizing is directly finally carried out by the extruded stock of the flat double screw extruder operated, substantially increase production effect
Rate.
Regenerative granular material made from the waste plastic regenerating and pelleting technique provided as invention is well mixed, stable performance,
The bellows steady quality produced with it.
Brief description of the drawings
Fig. 1 is the flow chart of waste plastic regenerating and pelleting technique provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.
Referring to Fig. 1, it is the flow chart of waste plastic regenerating and pelleting technique 1 provided by the invention.
Embodiment 1：
The waste plastic regenerating and pelleting technique 1 comprises the following steps：
S01：Raw material prepares：
The waste plastic cleaned is purchased, it is classified, selected, is placed in pond and filters, after drying, select therein
HDPE waste materials, PP waste materials, POE waste materials are stand-by as raw material.
Precipitation process：Precipitation after filtering passes to precipitation process facility and handled, and the little particle waste material separated adds
To the corresponding raw material, water is added to the pond.
S02：Auxiliary agent batch mixing：
The wollastonite of 1250 mesh activated Calcium carbonates of 50 mass parts, the talcum powder of 25 mass parts, 15 mass parts is poured into mixer
It is interior, start and the PE waxes of 0.5 mass parts, the silane coupler of 0.5 mass parts, 0.5 mass parts are gradually added after the mixer
Calcium stearate, the carbon black of 3 mass parts, the PE grafts of 2 mass parts, the antioxidant of 2 mass parts, mixed at high speed certain time, directly
Powder is evenly spread to auxiliary agent.
S03：Mixing raw materials：
After being down at 80 DEG C at a temperature of the mixer, added into the mixer 100 mass parts HDPE waste materials, 5
The PP waste materials of parts by weight, the POE waste materials of 5 parts by weight, mixed on low speed 3 minutes, compound is obtained, taken out stand-by.Mixing temperature is low
In 100 DEG C.
S04：Single screw extrusion：
The appropriate compound is taken to add the mixer again, mixed at high speed adds entering to single screw extrusion machine after 4 minutes
Expect in hopper, heat melting extrusion.Organic matter and inorganic particle is set to obtain tentatively plastifying melting.
S05：Twin-screw extrusion：
The discharging of the single screw extrusion machine is directly added to flat double screw extruder, heats melting extrusion again.Make polyethylene
Waste material and inorganic particle are fully modified.
Head material reclaims：Head material caused by the single screw extrusion machine, the flat double screw extruder, add after crushing
Enter to the raw material.
S06：Water ring pelletizing：
The discharging of the flat double screw extruder is cut into pellet via Water ring granulator.
S07：Post processing：
The pellet obtains finished product through being dehydrated, sorting, dry.
Dewatering cycle：Used during pelletizing with water with obtaining water circulation in dehydration.
Embodiment 2：
Flow is with consistent in embodiment 1 in the present embodiment, and therefore not to repeat here.
In the S02, by 1250 mesh activated Calcium carbonates of 75 mass parts, the talcum powder of 25 mass parts, 20 mass parts
Wollastonite is poured into mixer, and it is even to start the PE waxes that 0.6 mass parts are gradually added after the mixer, the silane of 0.6 mass parts
Join agent, the calcium stearate of 0.6 mass parts, the carbon black of 3 mass parts, the PE grafts of 2 mass parts, the antioxidant of 2 mass parts, at a high speed
Certain time is mixed, until auxiliary agent evenly spreads to powder.
In the S03, after being down at 80 DEG C at a temperature of the mixer, 100 matter are added into the mixer
The HDPE waste materials of part, the PP waste materials of 20 parts by weight, the POE waste materials of 4 parts by weight are measured, mixed on low speed 4 minutes, compound is obtained, takes
Go out stand-by.Mixing temperature is less than 100 DEG C.
Embodiment 3：
Flow is with consistent in embodiment 1 in the present embodiment, and therefore not to repeat here.
In the S02, by 1250 mesh activated Calcium carbonates of 50 mass parts, the talcum powder of 25 mass parts, 20 mass parts
Wollastonite is poured into mixer, and it is even to start the PE waxes that 0.7 mass parts are gradually added after the mixer, the silane of 0.7 mass parts
Join agent, the calcium stearate of 0.7 mass parts, the carbon black of 3 mass parts, the PE grafts of 1.5 mass parts, the antioxidant of 2.5 mass parts,
Mixed at high speed certain time, until auxiliary agent evenly spreads to powder.
In the S03, after being down at 80 DEG C at a temperature of the mixer, 100 matter are added into the mixer
The HDPE waste materials of part, the PP waste materials of 20 parts by weight, the POE waste materials of 4 parts by weight are measured, mixed on low speed 5 minutes, compound is obtained, takes
Go out stand-by.Mixing temperature is less than 100 DEG C.
Embodiment 4：
Flow is with consistent in embodiment 1 in the present embodiment, and therefore not to repeat here.
In the S02, by 1250 mesh activated Calcium carbonates of 25 mass parts, the talcum powder of 50 mass parts, 10 mass parts
Wollastonite is poured into mixer, start the PE waxes that 1 mass parts are gradually added after the mixer, 0.8 mass parts it is silane coupled
Agent, the calcium stearate of 0.7 mass parts, the carbon black of 3 mass parts, the PE grafts of 1.5 mass parts, the antioxidant of 2 mass parts, at a high speed
Certain time is mixed, until auxiliary agent evenly spreads to powder.
In the S03, after being down at 80 DEG C at a temperature of the mixer, 25 mass are added into the mixer
HDPE waste materials, the PP waste materials, the POE waste materials of 3 parts by weight of 100 parts by weight of part, mixed on low speed 4 minutes, obtain compound, take out
It is stand-by.Mixing temperature is less than 100 DEG C.
Compared to prior art, the waste plastic regenerating and pelleting technique 1 provided by the invention is squeezed provided with the single screw rod
Go out machine, row extrusion, the pelletizing again after preliminary melting, while eliminate the broken link before extrusion, the ring of filtering after extrusion
Section.Also allow and pelletizing is directly finally carried out by the extruded stock of the flat double screw extruder operated, substantially increase production
Efficiency.
Regenerative granular material made from the waste plastic regenerating and pelleting technique 1 provided as invention is well mixed, stable performance,
The bellows steady quality produced with it.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, similarly it is included within the scope of patent protection of the present invention.
Claims (10)
1. a kind of waste plastic regenerating and pelleting technique, it is characterised in that comprise the following steps：
Step 1：The waste plastic cleaned is purchased, it is classified, selected, is respectively placed in pond and filters, dries, make
It is stand-by for raw material；
Step 2：A certain amount of activated Calcium carbonate is poured into mixer, and auxiliary agent is added after mixer startup, at a high speed
Mix certain time；
Step 3：The part raw material is added into the mixer, compound is obtained after mixed on low speed certain time, taking-up is treated
With；
Step 4：The part compound is added into the mixer, after mixed at high speed certain time, added to Single screw extrusion
The feed end of machine, heat melting extrusion；
Step 5：The discharge end of the single screw extrusion machine is directly accessed the feed end of flat double screw extruder, and heating is molten again
Melt extrusion；
Step 6：The discharging of the flat double screw extruder is connected to Water ring granulator, and extruded stock obtains pellet through pelletizing；
Step 7：To the dewatering particle collectionses, sorting, drying, finished product is obtained.
2. waste plastic regenerating and pelleting technique according to claim 1, it is characterised in that：Filter cake in the step 1
It is passed through precipitation process facility to be handled, the little particle waste material separated is added to the raw material of corresponding species, is separated
Water is added to the pond.
3. waste plastic regenerating and pelleting technique according to claim 1, it is characterised in that：1250 are used in the step 2
Purpose activated Calcium carbonate.
4. waste plastic regenerating and pelleting technique according to claim 1, it is characterised in that：In the step 3, when described
After being down at a temperature of mixer at 80 DEG C, the raw material is added into the mixer, mixed on low speed obtains after 3 to 5 minutes
Compound, taking-up is stand-by, and mixing temperature is no more than 100 DEG C.
5. waste plastic regenerating and pelleting technique according to claim 1, it is characterised in that：Described in the step 4 at a high speed
Mixer mixes 4 minutes.
6. waste plastic regenerating and pelleting technique according to claim 1, it is characterised in that：The step 4 and the step
In five, Head material caused by the single screw extrusion machine, the flat double screw extruder, add after crushing to the raw material.
7. waste plastic regenerating and pelleting technique according to claim 1, it is characterised in that：In the step 7, the grain
The water for expecting to be dehydrated is added to the Water ring granulator.
8. waste plastic regenerating and pelleting technique according to any one of claims 1 to 6, it is characterised in that：In the step 1
The raw material includes but is not limited to HDPE waste materials, PP waste materials, POE waste materials.
9. waste plastic regenerating and pelleting technique according to claim 8, it is characterised in that：HDPE waste materials, PP waste materials, POE
The ratio of waste material three is 100：5-25：3-5；
Or 5-25：100：3-5.
10. waste plastic regenerating and pelleting technique according to any one of claims 1 to 6, it is characterised in that：In the step 2
The auxiliary agent includes but is not limited to filler, lubricant, photomask agent, antioxidant, coupling agent, graft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710964567.4A CN107571422A (en) | 2017-10-17 | 2017-10-17 | Waste plastic regenerating and pelleting technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710964567.4A CN107571422A (en) | 2017-10-17 | 2017-10-17 | Waste plastic regenerating and pelleting technique |
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| Publication Number | Publication Date |
|---|---|
| CN107571422A true CN107571422A (en) | 2018-01-12 |
Family
ID=61037122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710964567.4A Pending CN107571422A (en) | 2017-10-17 | 2017-10-17 | Waste plastic regenerating and pelleting technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107571422A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108995079A (en) * | 2018-06-27 | 2018-12-14 | 深圳市必发达科技有限公司 | Plastics recovery unit |
| IT202100028754A1 (en) * | 2021-11-12 | 2023-05-12 | Sermag S R L | DEODORIZATION PROCESS OF POLYMERIC MATERIALS |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106217689A (en) * | 2016-08-10 | 2016-12-14 | 天津华庆百胜塑业有限公司 | A kind of preparation method of recycled plastic granules |
-
2017
- 2017-10-17 CN CN201710964567.4A patent/CN107571422A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106217689A (en) * | 2016-08-10 | 2016-12-14 | 天津华庆百胜塑业有限公司 | A kind of preparation method of recycled plastic granules |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108995079A (en) * | 2018-06-27 | 2018-12-14 | 深圳市必发达科技有限公司 | Plastics recovery unit |
| IT202100028754A1 (en) * | 2021-11-12 | 2023-05-12 | Sermag S R L | DEODORIZATION PROCESS OF POLYMERIC MATERIALS |
| EP4180465A1 (en) * | 2021-11-12 | 2023-05-17 | SERMAG S.r.l. | Process for deodorizing polymeric materials |
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Application publication date: 20180112 |