CN103753789A - Multi-layer co-extrusion production method and application thereof - Google Patents
Multi-layer co-extrusion production method and application thereof Download PDFInfo
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- CN103753789A CN103753789A CN201410033305.2A CN201410033305A CN103753789A CN 103753789 A CN103753789 A CN 103753789A CN 201410033305 A CN201410033305 A CN 201410033305A CN 103753789 A CN103753789 A CN 103753789A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/304—Extrusion nozzles or dies specially adapted for bringing together components, e.g. melts within the die
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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
- B29L2009/00—Layered products
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a multi-layer co-extrusion production method and application of the multi-layer co-extrusion production method. Different fused high-molecular material flows are respectively fed by a plurality of extruders, and merged and co-extruded in a multi-channel co-extrusion composite molding machine head, so as to prepare multi-layer composite material products. The multi-layer co-extrusion production technology can be used for extruding and molding of the multi-layer composite material products such as cables and composite plates using high-molecular material as the raw material, and also used for recycling the wastes of the high-molecular material. Moreover, the constituents, constituent structure combinations and the constituent proportion of the products are very conveniently adjusted according to the actual needs.
Description
Technical field
The present invention relates to a kind of multi-layer co-extruded production method, can be applicable to the extrusion molding of multi-layer composite materials material products and the recyclings of macromolecular material waste material such as electric wire, composite board.
Background technology
More existing multi-layer composite materials material products adopts multistep to extrude compound mode and produces, so not only technological process complexity, also can produce repeatedly the problem of energy loss, and need to consume a large amount of human and material resources and financial resources, the production cost of product is increased.From the structural behaviour of product entirety, adopt multistep to extrude the product that complex method is produced, combination defective tightness between layers of material, easily produce obvious interface, gap between layers, and inner layer material is easily polluted and is damaged in storage and transport process, like this to the whole synthesis performance of product particularly mechanical performance can cause harmful effect, reduced environmental suitability and the market adaptability of product.
Summary of the invention
The object of the invention is for above-mentioned existing problems, provide a kind of technological process simple, production cost is lower, the multi-layer co-extruded production method that applicability is wide.
The present invention, described multi-layer co-extruded production method, is to use several extruders to supply with respectively different melt polymer material material stream, at a multiple flow passages coextrusion composite molding head internal exchange, amounts to and extrudes the process technology that obtains multi-layer composite materials material products.
The present invention, described extruder can adopt screw extruder.
The present invention, can, by adjusting the flow of melt polymer material material stream, adjust product entirety and some key function layer thickness, thereby obtain suitable product thickness.
The present invention, the component ratio of composition, constituent structure combination and the product of its product can be by selecting different macromolecular materials, controls the runner flow of melt polymer material material stream and adjust.
The present invention, described multiple flow passages coextrusion composite molding head is comprised of core, mouthful mould and handpiece body, described core is connected to the front end of handpiece body by mouth mould and attachment screw, in the centre of core, be provided with composite discharge passage, in handpiece body, be provided with 2-4 feeding-passage, each feeding-passage all with composite discharge channel connection.
The present invention, described multi-layer co-extruded production method can be applicable to the extrusion molding of multi-layer composite materials material products and the recyclings of macromolecular material waste material such as electric wire, composite board.
In the present invention, because different melt polymer material material stream is synchronously to amount to and extrude at a multiple flow passages coextrusion composite molding head internal exchange simultaneously, compare with traditional layering substep extrusion technique, greatly simplified production process, improved production efficiency, reduced production cost, also can avoid inner layer material in storage and transport process, polluted and damage simultaneously.
In the present invention, because different macromolecular materials synchronously amounts to and extrudes at a multiple flow passages coextrusion composite molding head internal exchange under molten condition simultaneously, between each polymer material layer than being easier to produce intermolecular force, thereby increased the bonding tightness between each polymer material layer, the whole synthesis performance of multi-layer composite materials material products is improved.
In the present invention, owing to can need to its composition, constituent structure combination and component ratio being adjusted according to the actual functional capability of product, thereby can realize more easily multifunction and the environmental suitability of product, also just improve the market adaptability of product.
The present invention, by multi-layer co-extruded production technology, makes the multi-layer composite materials material products such as electric wire, composite board, and main application comprises:
1, the present invention is applicable to the production of electric wire, comprise the electric wire product with multiple performance and the Special Wires and Cables product that has specific use, these electric wire products can adopt some special materials to carry out multi-layer co-extruded production together with common material according to actual environment feature, as replaced the shielded cable of metallic shield net and polymeric dielectric layer, the coextrusion of high polymer sheath layer with conductive polymer shielding composite, outdoor water-proof cable, fireproof cable, high temperature-resistant cable, acid-alkali-corrosive-resisting cable etc.;
2, the present invention is applicable to the production of composite board, comprise the multilayer composite board with multiple performance, these multilayer composite boards can adopt some special materials to carry out multi-layer co-extruded production together with common material according to actual environment feature, as made the multilayer composite board of anti-electromagnetic interference shielding layer with conductive polymer shielding composite, high temperature resistant composite board and flame-retardant composite board material etc.;
3, the present invention is applicable to the recycling of macromolecular material waste material; can macromolecular material waste material be carried out together with other materials according to practical condition to multi-layer co-extruded production; waste material is extruded at the less demanding position of Performance and quality; so just can digest the performance that reclaims waste material and can guarantee goods completely, reduce raw materials consumption, protection of the environment.
The present invention, has following beneficial effect:
1, the present invention can simplify the production procedure of multi-layer composite materials material products largely, and speed of production is fast, and output is high, has reduced the loss of the energy simultaneously, significantly reduces production costs;
2, the present invention is applied in production process and does not substantially produce three wastes material, realizes and cleans production, and product is good to the adaptability of environmental protection, has reduced the pollution to environment;
3, the raw material that the present invention adopts is all common macromolecular material substantially, convenient acquisition, and in coextrusion process, do not use solvent, reduce raw material investment;
4, the present invention can adopt conventional screw extruder, and one-time investment is few, and the construction period is short, and production cost is low, and operation number is few, easily grasps operation;
5, the present invention can selective flow and fusing point differ larger macromolecular material and produce composite article, product structure combined and instant is flexible, raw material selection is in extensive range, purposes is many, and applicability is wide, can produce the product that adapts to different markets according to the different market demands;
6, the present invention can make goods have the good characteristic of several different macromolecular materials concurrently simultaneously, and between layers of material in conjunction with closely, the combination property of goods is improved, product is better more stable to the adaptability good quality of environmental protection.
Accompanying drawing explanation
Fig. 1 is multiple flow passages coextrusion composite molding handpiece structure schematic diagram of the present invention.
In figure, 1 is core, and 2 is attachment screw, and 3 is a mouthful mould, and 4 is handpiece body, and 5,6,7,8 is feeding-passage, and 9 is composite discharge passage, and A, B, C, D, E represent different melt polymer material material stream.
The specific embodiment
A kind of multi-layer co-extruded production method, is to use several extruders to supply with respectively different melt polymer material material stream, at a multiple flow passages coextrusion composite molding head internal exchange, amounts to and extrudes the processing method that obtains multi-layer composite materials material products.This multi-layer co-extruded production method can be applicable to the extrusion molding of multi-layer composite materials material products and the recyclings of macromolecular material waste material such as electric wire, composite board.And can to product composition, constituent structure combination and component ratio, adjust easily according to actual needs.
The present embodiment, described extruder can adopt common screw extruder, and single-screw extrusion machine or twin (double) screw extruder all can; Extruder head adopts multiple flow passages coextrusion composite molding head; With reference to Fig. 1, described multiple flow passages coextrusion composite molding head is comprised of core 1, mouthful mould 3 and handpiece body 4, described core 1 is connected to the front end of handpiece body 4 by mouth mould 3 and attachment screw 2, in the centre of core 1, be provided with composite discharge passage 9, in handpiece body 4, be provided with 4 feeding-passages, each feeding-passage is all communicated with composite discharge passage (9); Raw material adopt the macromolecular material waste material of different macromolecular materials or recovery according to actual product performance need; Composition, the constituent structure combination of product can, with the macromolecular material waste material of different macromolecular materials or recovery, be adjusted by the different runner coextrusion of multiple flow passages coextrusion composite molding head through screw extruder; The component ratio of product can be adjusted by the runner flow of controlling melt polymer material material stream.
The present embodiment, different melt polymer material material streams merge in coextrusion in composite discharge passage by different feeding-passages.
The present embodiment, by more than 2 or 2 extruders, realize multi-layer co-extruded, melt polymer material material stream is uniformly distributed at multiple flow passages coextrusion composite molding head, between each layer of melt, do not alter mutually, keep relative independentability, between each melt of while, after contact, produce intermolecular force, make the melt being in contact with one another in conjunction with tight.
The present embodiment, can select according to different raw materials screen pack and the porous plate of suitable order number, adopts suitable expressing technique temperature and screw speed, thereby obtains suitable melt pressure and extruded velocity, makes the performance of extruded product, quality good.According to product demand, select suitable hauling speed, adjust the flow of melt polymer material material stream, can adjust entirety and some key function layer thickness, thereby obtain suitable product thickness.
The present embodiment, utilizes bosh to carry out cooling curing sizing to extruded product.
Claims (6)
1. a multi-layer co-extruded production method, is characterized in that: use plural platform extruder to supply with respectively different melt polymer material material stream, amount to extrude obtain multi-layer composite materials material products at a multiple flow passages coextrusion composite molding head internal exchange.
2. multi-layer co-extruded production method according to claim 1, is characterized in that: described extruder is screw extruder.
3. multi-layer co-extruded production method according to claim 1, is characterized in that: by adjusting the flow of melt polymer material material stream, product entirety and some key function layer thickness are adjusted, thereby obtained suitable product thickness.
4. multi-layer co-extruded production technology according to claim 1, is characterized in that: the component ratio of composition, constituent structure combination and the product of product, by selecting different macromolecular materials, is controlled the runner flow of melt polymer material material stream and adjusted.
5. multi-layer co-extruded production method according to claim 1, it is characterized in that: described multiple flow passages coextrusion composite molding head is comprised of core (1), mouthful mould (3) and handpiece body (4), described core (1) is connected to the front end of handpiece body (4) by mouthful mould (3) and attachment screw (2), in the centre of core (1), be provided with composite discharge passage (9), in handpiece body (4), be provided with 2-4 feeding-passage, each feeding-passage is all communicated with composite discharge passage (9).
6. an application for multi-layer co-extruded production method, is characterized in that: comprise the extrusion molding of multi-layer composite materials material products and the recycling of macromolecular material waste material of electric wire or composite board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410033305.2A CN103753789A (en) | 2014-01-23 | 2014-01-23 | Multi-layer co-extrusion production method and application thereof |
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| CN201410033305.2A CN103753789A (en) | 2014-01-23 | 2014-01-23 | Multi-layer co-extrusion production method and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106313466A (en) * | 2016-08-25 | 2017-01-11 | 佛山市南海森蓝环保科技有限公司 | Preparing method of PVC composite board |
| CN107150433A (en) * | 2017-05-15 | 2017-09-12 | 浙江豪升塑料科技有限公司 | The multilayer colored diaphragm of processing die head and case and bag of the multilayer colored diaphragm of case and bag |
| CN112048119A (en) * | 2020-09-09 | 2020-12-08 | 浙江亚厦装饰股份有限公司 | Stone-plastic composite material and stone-plastic composite material ceiling board |
| CN112092323A (en) * | 2020-09-08 | 2020-12-18 | 佛山市南海崇泰防火材料有限公司 | Hard composite fire-proof strip, manufacturing method and manufacturing device thereof |
| CN112140498A (en) * | 2020-09-09 | 2020-12-29 | 浙江亚厦装饰股份有限公司 | Processing technology of height-integrated extrusion ceiling board |
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| GB736053A (en) * | 1952-06-17 | 1955-08-31 | Lavorazione Mat Plastiche Sas | Extrusion head for providing cables with multi-layer coating |
| JPH06344414A (en) * | 1993-06-08 | 1994-12-20 | Sekisui Chem Co Ltd | Co-extrusion multi-layer molding method |
| EP1424186A1 (en) * | 2002-11-28 | 2004-06-02 | Huhtamaki France S.A. | Method of manufacturing an absorbent or non absorbent plastic packaging material with a barrier layer by coextrusion, and the manufactured packaging material |
| US20070045893A1 (en) * | 2005-08-26 | 2007-03-01 | Himanshu Asthana | Multilayer thermoplastic films and methods of making |
| US20080138598A1 (en) * | 2006-12-08 | 2008-06-12 | 3M Innovative Properties Company | Apparatus and Method for Co-Extrusion of Articles Having Discontinuous Phase Inclusions |
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Patent Citations (7)
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| GB736053A (en) * | 1952-06-17 | 1955-08-31 | Lavorazione Mat Plastiche Sas | Extrusion head for providing cables with multi-layer coating |
| JPH06344414A (en) * | 1993-06-08 | 1994-12-20 | Sekisui Chem Co Ltd | Co-extrusion multi-layer molding method |
| EP1424186A1 (en) * | 2002-11-28 | 2004-06-02 | Huhtamaki France S.A. | Method of manufacturing an absorbent or non absorbent plastic packaging material with a barrier layer by coextrusion, and the manufactured packaging material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106313466A (en) * | 2016-08-25 | 2017-01-11 | 佛山市南海森蓝环保科技有限公司 | Preparing method of PVC composite board |
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| CN107150433A (en) * | 2017-05-15 | 2017-09-12 | 浙江豪升塑料科技有限公司 | The multilayer colored diaphragm of processing die head and case and bag of the multilayer colored diaphragm of case and bag |
| CN112092323A (en) * | 2020-09-08 | 2020-12-18 | 佛山市南海崇泰防火材料有限公司 | Hard composite fire-proof strip, manufacturing method and manufacturing device thereof |
| CN112048119A (en) * | 2020-09-09 | 2020-12-08 | 浙江亚厦装饰股份有限公司 | Stone-plastic composite material and stone-plastic composite material ceiling board |
| CN112140498A (en) * | 2020-09-09 | 2020-12-29 | 浙江亚厦装饰股份有限公司 | Processing technology of height-integrated extrusion ceiling board |
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Application publication date: 20140430 |