CN110625848A - Manufacturing method of injection molding pipe - Google Patents
Manufacturing method of injection molding pipe Download PDFInfo
- Publication number
- CN110625848A CN110625848A CN201810648679.3A CN201810648679A CN110625848A CN 110625848 A CN110625848 A CN 110625848A CN 201810648679 A CN201810648679 A CN 201810648679A CN 110625848 A CN110625848 A CN 110625848A
- Authority
- CN
- China
- Prior art keywords
- manufacturing
- injection molding
- particles
- molding pipe
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B2017/001—Pretreating the materials before recovery
- B29B2017/0015—Washing, rinsing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0203—Separating plastics from plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/06—PVC, i.e. polyvinylchloride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to a manufacturing method of an injection molding pipe, and belongs to the technical field of injection molding. It is characterized by that the returned material particles are made up through the processes of cleaning, selecting material, dripping, pulverizing and granulating. Manufacturing a plastic PVC pipeline: mixing and melting. The device has the advantages of strong adaptability, good maneuverability, simple operation, reliable performance and the like.
Description
Technical Field
The invention relates to a method for manufacturing a plastic pipe by using old plastic, in particular to a method for manufacturing a liquid conveying pipe by mixing regenerated waste plastic and new particles, and belongs to the technical field of injection molding.
Background
As is well known, the current PVC pipe is generally made of polyvinyl chloride high molecular polymer as a raw material by high temperature injection molding through an injection molding machine. The raw material is generally from leftovers after petroleum refining. Because the polyvinyl chloride high molecular polymer has the effect of recycling after high-temperature treatment, a large amount of leftover materials of high molecular polymers such as polyvinyl chloride and the like or used waste materials exist in the market, and the requirements of some pipelines on raw materials are not too high, the raw materials for preparing the liquid conveying pipe by mixing the regenerated waste plastics and new particles are provided.
Disclosure of Invention
The invention provides a method for manufacturing a PVC plastic pipe by using waste plastics, aiming at comprehensively utilizing waste plastic particles and plastic particles used for the first time to produce a PVC pipe.
The technical scheme adopted by the invention comprises the following steps: i, cleaning, selecting, dripping, crushing and granulating the returned particles; and II, the manufacturing steps of the PE pipeline are mixing, melting and injection molding.
And step I, manufacturing returned materials. The recovered old plastic is subjected to rough washing and rinsing in a water tank, and then enters a rotary cleaning machine to be cleaned by adding a cleaning agent or caustic soda for half an hour; sorting materials according to different components, and classifying the cleaned waste plastics according to polyethylene, polypropylene, polyvinyl chloride and the like; dewatering the small pieces of waste material with dewatering machine or dewatering; crushing the plastic blocks after the steps are classified into small blocks and bagged in a fine crusher; and (3) granulating, namely putting the crushed small waste into a primary and secondary wire-drawing granulator, and thermally cutting into small-section particles of about 4mm at the decomposition temperature of 60-180 ℃.
And 2, mixing the materials in proportion, and melting and injection molding. Mixing the recycled particles and the first-used plastic particles according to the weight ratio of 2.5-3: 1, mixing and uniformly stirring; melting, putting the mixed particles into a heating box in an environment of about 190-210 ℃, heating and stirring until pasty materials are formed; and (3) injection molding, and putting the melted pasty substance into pultrusion equipment to produce the PVC pipe.
The invention not only has the social effects of environmental protection, energy conservation, waste material changing and the like, but also has the economic benefits of low material cost, wide material source, large product market and the like.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Step 1, classifying the collected waste plastics or leftover materials made of the plastics, and classifying the waste plastics or the leftover materials into polyvinyl chloride, polyethylene, polypropylene and the like according to different components. Tearing the waste materials of polyvinyl chloride, polyethylene and polypropylene with different colors into small blocks of 5-9cm by a shredder, feeding the small blocks of 5-9cm into a fine pulverizer to be pulverized into small blocks of about 1cm, and bagging. Roughly washing the small blocks processed into 1cm in a water tank, removing dirt, rinsing, removing impurities, and washing with water; cleaning for half an hour by adding cleaning agent or caustic soda into the rotary cleaning machine. Dewatering or dripping the cleaned small waste materials by a dewatering machine. And (3) putting the dewatered small waste materials into a primary and secondary wire-drawing granulator, thermally cutting into small sections of particles with the diameter of about 4mm at the decomposition temperature of 65-170 ℃, and drying or airing and bagging.
Step 2, mixing the raw material polyvinyl chloride and the return material according to the weight ratio of 3: 1, uniformly mixing, namely putting the mixed particles into a heating box in an environment of about 210 ℃, heating and stirring until the mixed particles become pasty substances; and putting the melted pasty substance into pultrusion equipment to produce the PVC pipe. The above-mentioned embodiment is one of the preferred embodiments of the present invention, and alternative manufacturing methods within the technical scope of the present invention in the field should be included in the protection scope of the present invention.
Claims (3)
1. A manufacturing method of an injection molding pipe comprises the following steps: 1. preparation of feed back particles: cleaning, selecting materials, dripping, crushing and granulating; and 2, manufacturing the PVC pipeline, namely mixing, melting and injection molding.
2. The process of claim 1, wherein the feed back particles are placed in a primary and secondary wire-drawing pelletizer and thermally cut into about 4mm small pieces at a decomposition temperature of 65-170 ℃.
3. The method for manufacturing PVC pipes by using waste plastics as claimed in claim 1, wherein the weight ratio of the recycled particles to the first-used plastic particles is 2.5-3: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810648679.3A CN110625848A (en) | 2018-06-22 | 2018-06-22 | Manufacturing method of injection molding pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810648679.3A CN110625848A (en) | 2018-06-22 | 2018-06-22 | Manufacturing method of injection molding pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110625848A true CN110625848A (en) | 2019-12-31 |
Family
ID=68967763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810648679.3A Pending CN110625848A (en) | 2018-06-22 | 2018-06-22 | Manufacturing method of injection molding pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110625848A (en) |
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2018
- 2018-06-22 CN CN201810648679.3A patent/CN110625848A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191231 |
|
| WD01 | Invention patent application deemed withdrawn after publication |