CN104002457A - Co-extrusion mold for plastic-wood composite new materials - Google Patents

Co-extrusion mold for plastic-wood composite new materials Download PDF

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Publication number
CN104002457A
CN104002457A CN201410184409.3A CN201410184409A CN104002457A CN 104002457 A CN104002457 A CN 104002457A CN 201410184409 A CN201410184409 A CN 201410184409A CN 104002457 A CN104002457 A CN 104002457A
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CN
China
Prior art keywords
extruder
auxiliary
main
extrusion
cavity
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
Application number
CN201410184409.3A
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Chinese (zh)
Inventor
唐圣卫
唐道远
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI SENTAI WPC NEW MATERIAL CO LTD
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ANHUI SENTAI WPC NEW MATERIAL CO LTD
Priority date (The priority date 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 date listed.)
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Application filed by ANHUI SENTAI WPC NEW MATERIAL CO LTD filed Critical ANHUI SENTAI WPC NEW MATERIAL CO LTD
Priority to CN201410184409.3A priority Critical patent/CN104002457A/en
Publication of CN104002457A publication Critical patent/CN104002457A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/305Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die

Abstract

The invention provides a co-extrusion mold for plastic-wood composite new materials and relates to the technical field of new materials. The co-extrusion mold comprises a main extruder and an auxiliary extruder, and the main extruder and the auxiliary extruder are both connected with a co-extrusion die; the die cavity of the co-extrusion die comprises a main extrusion cavity connected with the main extruder and an auxiliary extrusion cavity connected with the auxiliary extruder; the auxiliary extruder is connected with a surface-layer material inlet through a channel; the upper end face of the cavity wall between the main extrusion cavity and the auxiliary extrusion cavity is lower than the upper end face of the channel wall; a surface-layer material is capable of passing over the upper end face of the channel wall, entering the main extrusion cavity under the effect of extrusion pressure, and conveying the external surface of a core-layer material. The provided co-extrusion mold for plastic-wood composite new materials is capable of producing double plastic-wood materials and enabling a layer of modified plastic to cover a common wood plate, and the co-extrusion mold is capable of being connected with two extruders at the same time and producing the plastic-wood plate materials covered with modified plastic in one step.

Description

Mould the co-extruding mould of wooden composite material
Technical field:
The present invention relates to new material technology field, relate in particular to a kind of co-extruding mould of moulding wooden composite material.
Background technology:
Plastics Packaging Wastes has seriously been polluted environment, has affected industrial and agricultural production, has endangered human health and vegeto-animal existence.World's plastics annual production has surpassed 200,000,000 tons, and China plastics packaging materials 2007 is 10 million ton, and these plastic package materials and container are after disposable use, and major part has become solid waste.Plastics Packaging Wastes is lightweight, volume is large, quantity is many, and hard degradation can not arbitrarily incinerate again, is mostly discarded in railway limit, inland waters and streets and lanes, cities and towns, " white pollution " band that accumulates over a long period and just become startling.According to relevant department, investigate 1000 tons, Shanghai daily output rubbish, plastic refuse accounts for 330 tons; 12000 tons, Beijing daily output rubbish, plastic refuse accounts for 360 tons; Approximately 6000 tons, Guangzhou daily output rubbish, plastic garbage accounts for 200 tons.
China's logging residue and producing material residue account for 40% of Tree biomass, and according to the Eleventh Five-Year Plan period forest harvesting limit of State Council approved, 2.5 hundred million m3/a calculate, and China is every year by the felling, the producing material residue that produce approximately 1.1 hundred million tons.In addition, industrial wood waste calculates and also has the annual production up to 3,210 ten thousand m3 by 34.4% of log.At present, although the utilization of forestry " three surplus things " has caused people's attention, worldwide development level is also uneven.The timber comprehensive utilization ratio of the developing countries such as China is only 50%~60%, and the timber comprehensive utilization ratio of developed country has reached 80%~90%.The development and utilization situation of forestry " three surplus things ": bulk density is low conventionally, volume is large in forestry " three surplus things ", and it is loose to distribute, be not easy to collect, storage and transportation, therefore traditional " three surplus things " processing mode greatly mainly with abandoning on the spot, the plain mode such as burning or landfill is main.At present, along with people improve gradually to the attention rate of air and water quality, these traditional methods cannot continue to continue to use.And by through engineering approaches and high performance, the modification regeneration of waste plastic and the making full use of of bamboo wood chip resource of wood (bamboo) plastic material, can solve the regeneration problem of waste or used plastics, bamboo wood working industry waste resource.
Wood plastic composite, first since western developed country is researched and developed successfully, has been widely used in skirting, wallboard, bed board, decorative panel, fence, balustrade, building template, building doors and windows, outdoor roof tiles; Automotive upholstery (door panel, base plate, standby wheel cover, backrest, instrument board, glove box, shadow shield, headrest plug-in unit etc.); Combination pallet, packing case, storage box, flower case, stock shelf for packing and logistics; Highway noises dividing plate, seashore road plate, railroad sleeper; Also can do Decorative frame, oceangoing ship ship passenger cabin dividing plate, office partition, outdoor outdoor table and bench, adjustable shelf etc., material just under development also has folded sheet, shutter, indoor roof plate, student desk and chair etc.This new technology is at the early-stage in China, along with going deep into of applying, will, to making full use of resource, increase economic efficiency and reduce the generation active influences such as environmental pollution, have wide market prospects.Wood plastic composite (WPC) is that to take the biological materials such as elementary wood, bamboo be primary raw material, a certain proportion of plastic matrix of compounding, the composite of machine-shaping after special process is processed.Wood plastic composite is applied widely, the use field that almost can contain all logs, plastics, plastic-steel, aluminium alloy and other similar composite, and because it uses environmental protection, cost economy, and can recycling, thereby have also solved the regeneration problem of composite, wood industry waste resource.Nowadays advocating under the overall situation of low-carbon economy, the recyclable feature of wood plastic composite more and more comes into one's own it.At present, global WPC output is over 2,000,000 tons.In the middle of this, north America region output ranks first with 1,000,000 tons, 300,000 tons, China, 70,000 tons, 100,000 tons, Japan and Germany.The wood plastic composite industry of visible China still develops reasonable in the world.
But also there is a certain distance with American-European, Japan and other countries in China's wood plastic composite, also in low and middle-grade times, the wood-plastic composite material products of particularly properties of product and service condition being had relatively high expectations is developed on a large scale, the advantage of himself does not also manifest comprehensively, such as wood plastic composite demand consumption, account for the high-end product market such as the U.S., South Africa of global consumption 80%, climatic environment is severe, to the adaptability of wood plastic composite, requires very high.Therefore, particularly formula and working process parameter have to be strengthened to the research of Wood plastic composite performance impact.Although the Wood plastic composite of domestic production has many good qualities, Shortcomings still so far, as easy scraping, easily the uniformity of poor, the color of greasy dirt, ageing resistance and persistence poor etc.These deficiencies need to be drawn external experience from further investigations of starting with such as composition and engineerings, and improve constantly production technology and the quality level of moulding wood products.
Summary of the invention:
Technical problem to be solved by this invention is to overcome the defect of prior art, a kind of co-extruding mould of moulding wooden composite material is further proposed, produce mould wooden co-extrusion product have higher intensity, hardness, acid and alkali-resistance, anticorrosive, indeformable, containing formaldehyde, the feature that easily reclaims.
Technical problem to be solved by this invention realizes by the following technical solutions.
A kind ofly mould wooden coextru-lamination new material, it is characterized in that: by core material and skin-material, formed, described core material is mainly mixed by wood, bamboo natural plant fibre and waste polyolefin plastics, described skin-material is mixed by modified plastics and look mother, and described skin-material is evenly coated on core material surface.
The mass ratio of described wood, bamboo natural plant fibre and waste polyolefin plastics is 2:1.
Described wood, bamboo natural plant fibre can be selected discarded wood, bamboo natural plant fibre, and wood, bamboo natural plant fibre and the shared ratio of waste polyolefin plastics are approximately 60%, 30%, also have 10% to be other inserts and additive.These materials are mixing under HTHP, form graininess sandwich layer semifinished material, these materials are under the high temperature of nearly 200 ℃, the effect of 20Mpa with upward pressure, well together mixing, low moisture, without bacterium, for the follow-up quality product that can produce is laid a solid foundation.Skin-material adopts improved polyalkene, has higher scraping and wiping resistance performance, good ageing resistace.Top layer and sandwich layer, in co-extruding mould, to be not less than the pressure of 15MPa, at the temperature of approximately 180 ℃, fuse together, and have very high laminating intensity, and ectonexine can not be separated from each other.
Described modified plastics is for adopting improved polyalkene.
A kind of co-extruding mould of moulding wooden composite material, it is characterized in that: comprise main extruder and auxiliary extruder, described main extruder is connected a co-extruding mould jointly with auxiliary extruder, the die cavity of described co-extruding mould comprises the main extruding cavity being connected with main extruder, also comprise the auxiliary extruding cavity being connected with auxiliary extruder, described auxiliary extruding cavity is by runner connection table layer material entrance, wall upper surface, chamber between described main extruding cavity and auxiliary extruding cavity is lower than flow path wall upper surface, skin-material can be crossed wall upper surface, chamber and enter main extruding cavity under extrusion pressure effect, be coated on core material outer surface.
The extrusion pressure of described auxiliary extruder is greater than the extrusion pressure of main extruder.
The extrusion pressure of described main extruder is 15-20MPa, and temperature is 180-300 ℃.
Beneficial effect of the present invention is:
Adopt discarded object as producing raw material, the product of preparation have higher intensity and hardness, acid and alkali-resistance, anticorrosive, indeformable, containing formaldehyde, the feature that easily reclaims, it is a kind of new green environment protection material, not enough, the easy scuffing of case hardness, easy-weathering, the surface that have solved the domestic existence of wood-plastic products in the market easily leave spot and are difficult to the defect of removing, uniformity and the persistence with stronger stability, ageing resistance, color, heat insulation, soundproof effect good, effectively improved the class of wood plastic composite.
The co-extruding mould of moulding wooden composite material provided by the invention, can produce dual plastic wood sheet, on common plastic wood sheet, wrap up one deck modified plastics, this co-extruding mould can connect two extruders simultaneously again, the disposable plastic wood sheet that processes parcel modified plastics.
Accompanying drawing explanation:
Fig. 1 is the connection diagram of main extruder and auxiliary extruder;
Fig. 2 is the structural representation of co-extruding mould of the present invention.
The specific embodiment:
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram and embodiment, further set forth the present invention.
As Fig. 1, shown in Fig. 2, a kind of co-extruding mould of moulding wooden composite material, comprise main extruder 2 and auxiliary extruder 1, main extruder 2 is connected a co-extruding mould 3 jointly with auxiliary extruder 1, the die cavity of co-extruding mould 3 comprises the main extruding cavity 35 being connected with main extruder 2, also comprise the auxiliary extruding cavity 34 being connected with auxiliary extruder 1, auxiliary extruding cavity 34 is by runner 32 connection table layer material entrances 31, chamber wall 33 upper surfaces between main extruding cavity 35 and auxiliary extruding cavity 34 are lower than flow path wall upper surface 36, skin-material can be crossed chamber wall 33 upper surfaces and enter main extruding cavity 35 under extrusion pressure effect, be coated on core material outer surface, core material joins in main extruder 2, by main extruder 2, be extruded into co-extruding mould 3, skin-material joins auxiliary extruder 1, by auxiliary extruder 1, be extruded into co-extruding mould 3, at co-extruding mould 3 endosexine materials, be coated on core material outer surface, wooden coextru-lamination new material is moulded in formation.
The place that co-extruding mould 3 inner sandwich layer materials and skin-material merge is main extruding cavity 35, guarantee that pressure when bi-material merges equates, flow velocity is identical.The method of realizing this goal is by gathering a large amount of experimental datas, sets up the functional relation between main extruder 2 and auxiliary extruder 1 main shaft, utilizes automatic control technology, ensures the Stability and dependability of producing.
During co-extruding mould 3 design, accomplish that the distance that skin-material flows through in runner is identical, on the normal plane of flow direction, long-pending the equating of section of melt, thereby realize in top layer and sandwich layer joint place, pressure is identical everywhere, flow velocity is identical, is guaranteeing that under the condition of certain pressure and temperature, top layer and sandwich layer bi-material can fit together more closely.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (3)

1. a co-extruding mould of moulding wooden composite material, it is characterized in that: comprise main extruder and auxiliary extruder, described main extruder is connected a co-extruding mould jointly with auxiliary extruder, the die cavity of described co-extruding mould comprises the main extruding cavity being connected with main extruder, also comprise the auxiliary extruding cavity being connected with auxiliary extruder, described auxiliary extruding cavity is by runner connection table layer material entrance, wall upper surface, chamber between described main extruding cavity and auxiliary extruding cavity is lower than flow path wall upper surface, skin-material can be crossed wall upper surface, chamber and enter main extruding cavity under extrusion pressure effect, be coated on core material outer surface.
2. the production equipment of moulding wooden coextru-lamination new material according to claim 1, is characterized in that: the extrusion pressure of described auxiliary extruder is greater than the extrusion pressure of main extruder.
3. the production equipment of moulding wooden coextru-lamination new material according to claim 2, is characterized in that: the extrusion pressure of described main extruder is 15-20MPa, and temperature is 180-300 ℃.
CN201410184409.3A 2014-05-04 2014-05-04 Co-extrusion mold for plastic-wood composite new materials Pending CN104002457A (en)

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Application Number Priority Date Filing Date Title
CN201410184409.3A CN104002457A (en) 2014-05-04 2014-05-04 Co-extrusion mold for plastic-wood composite new materials

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104002520A (en) * 2014-05-04 2014-08-27 安徽森泰塑木新材料有限公司 Plastic-wood co-extrusion composite new material and production equipment thereof
CN109203409A (en) * 2018-08-20 2019-01-15 河北联捷同创装饰材料有限公司 A kind of production line and its production technology of wood-plastic co-extrusion section bar
CN110877447A (en) * 2019-10-24 2020-03-13 安徽森泰木塑科技地板有限公司 Mould for manufacturing foamed floor with wood texture
CN111958936A (en) * 2020-08-05 2020-11-20 湖南恒信新型建材有限公司 Adhesive-free composite co-extrusion one-step forming integrated wallboard

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0899078A1 (en) * 1997-08-29 1999-03-03 Alphacan Method of manufacturing a composite profile, apparatus for carrying out the method and plastic composite profile
CN201253944Y (en) * 2008-09-25 2009-06-10 铜陵市耐科科技有限公司 Co-extrusion die head for low foaming sectional materials
CN201538033U (en) * 2009-09-14 2010-08-04 张利森 Wood-plastic noctilucent co-extrusion die
CN102307723A (en) * 2008-12-19 2012-01-04 纤维复合有限责任公司 Wood-plastic composites utilizing ionomer capstocks and methods of manufacture
CN103522511A (en) * 2013-09-03 2014-01-22 许黎明 Manufacturing method of wood-plastic composite sectional material with prestressed tendons
CN203510680U (en) * 2013-01-14 2014-04-02 许黎明 Multifunctional wood-plastic composite material one-step method extruding machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0899078A1 (en) * 1997-08-29 1999-03-03 Alphacan Method of manufacturing a composite profile, apparatus for carrying out the method and plastic composite profile
CN201253944Y (en) * 2008-09-25 2009-06-10 铜陵市耐科科技有限公司 Co-extrusion die head for low foaming sectional materials
CN102307723A (en) * 2008-12-19 2012-01-04 纤维复合有限责任公司 Wood-plastic composites utilizing ionomer capstocks and methods of manufacture
CN201538033U (en) * 2009-09-14 2010-08-04 张利森 Wood-plastic noctilucent co-extrusion die
CN203510680U (en) * 2013-01-14 2014-04-02 许黎明 Multifunctional wood-plastic composite material one-step method extruding machine
CN103522511A (en) * 2013-09-03 2014-01-22 许黎明 Manufacturing method of wood-plastic composite sectional material with prestressed tendons

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104002520A (en) * 2014-05-04 2014-08-27 安徽森泰塑木新材料有限公司 Plastic-wood co-extrusion composite new material and production equipment thereof
CN109203409A (en) * 2018-08-20 2019-01-15 河北联捷同创装饰材料有限公司 A kind of production line and its production technology of wood-plastic co-extrusion section bar
CN110877447A (en) * 2019-10-24 2020-03-13 安徽森泰木塑科技地板有限公司 Mould for manufacturing foamed floor with wood texture
CN111958936A (en) * 2020-08-05 2020-11-20 湖南恒信新型建材有限公司 Adhesive-free composite co-extrusion one-step forming integrated wallboard
CN111958936B (en) * 2020-08-05 2021-12-31 湖南恒信新型建材有限公司 Adhesive-free composite co-extrusion one-step forming integrated wallboard

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CB02 Change of applicant information

Address after: 242200 Anhui County of Guangde Province Economic and Technological Development Zone in China

Applicant after: Anhui Sen Taimusu Group Plc

Address before: 242200 Guangde economic and Technological Development Zone, Xuancheng, Anhui

Applicant before: Anhui Sentai WPC New Material Co.,Ltd.

COR Change of bibliographic data

Free format text: CORRECT: APPLICANT; FROM: ANHUI SUNTEC PLASTIC WOOD NEW MATERIALS CO., LTD. TO: ANHUI SENTAI WPC GROUP CO., LTD

RJ01 Rejection of invention patent application after publication

Application publication date: 20140827

RJ01 Rejection of invention patent application after publication