CN104786338A - Technology for producing wood particle mould pressed product - Google Patents

Technology for producing wood particle mould pressed product Download PDF

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Publication number
CN104786338A
CN104786338A CN201410026222.0A CN201410026222A CN104786338A CN 104786338 A CN104786338 A CN 104786338A CN 201410026222 A CN201410026222 A CN 201410026222A CN 104786338 A CN104786338 A CN 104786338A
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CN
China
Prior art keywords
hot pressing
technology
wood
particle
pressing
Prior art date
Application number
CN201410026222.0A
Other languages
Chinese (zh)
Inventor
张双保
于雪斐
王翠翠
王丹丹
侯国君
宋伟
于争争
Original Assignee
张双保
于雪斐
王翠翠
王丹丹
侯国君
宋伟
于争争
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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Publication date
Application filed by 张双保, 于雪斐, 王翠翠, 王丹丹, 侯国君, 宋伟, 于争争 filed Critical 张双保
Priority to CN201410026222.0A priority Critical patent/CN104786338A/en
Publication of CN104786338A publication Critical patent/CN104786338A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00Pretreatment of moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00Pretreatment of moulding material
    • B27N1/02Mixing the material with binding agent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/10Moulding of mats

Abstract

The invention relates to the technical field of manufacturing of wood material mould pressed industrial products, in particular to a technology for manufacturing and producing a wood particle mould pressed product. Machining remaining objects of acacia mangium are taken as main raw materials, phenolic resin (PE) is taken as a tackiness agent, vinyl acetate-vinyl acetateethylene emulsion (VAE) is taken as an adhesive additives, and under the condition of a laboratory, a two-step method particle moulding technological method is adopted for carrying out moulding on the material. The technology comprises material prepressing, hot pressing and performance detecting. Through control over the particle moisture content, an addition agent, the hot pressing temperature, the hot pressing time, the hot pressing pressure, the slab density and the adhesive consumption, the optimum production technology effect is achieved. Meanwhile, the physical mechanics property of the manufactured product can meet or exceed the requirement of the particle board national standard GB/T4897.1 to 4837.7-2003.

Description

Wood particle-moulding product producing process
Technical field:
The present invention relates to wood materials molded industrial goods manufacturing technology field, particularly a kind of preparation technology of wood particle-moulding production of articles.
Background technology:
China is a Shaolin country, and timber resources is deficient, and supply falls short of demand for a long time for timber.The enforcement of country's " wildwood protected project ", makes the contradiction between timber supply and demand more outstanding.In order to alleviate timber supply and demand contradiction, country employs a large amount of foreign exchange imported timber and various forestry products every year.Along with the whole world is to the implementation of the attention of ecological environment and Forest Certification system, the long-term dependence on import of timber resources makes up this situation of domestic breach, will be subject to the dual restriction of international market supply and national foreign exchange balance.For this reason, the State Administration of Forestry proposes the new period forestry strategy and policy implemented the large key construction project (comprising " key area rapid-growing and high-yield forest base construction project ") of forestry six and realize five big changes (comprising " wood producing is from taking wildwood as main turning to based on artificial forest ") in Promote Forestry great-leap-forward development process.
The production stock of producing moulded wood chips articles, in nineteen twenty-three Warsaw Li Di company of Germany, just starts the research work of particle moulding technique this respect in the world from the forties in 20th century, its production technology is at development and perfect.Since the seventies, the representational compression molding production technology of suitability for industrialized production application most mainly contains: Sai Modaien technique (Thermodyn process), section Li Puleisi technique (Collipress process), Wo Zhali secret service skill (Werzalitprocess) and Haataja mold pressing production technology.
China's particle moulding technical research starts from the fifties, and timber institute in Chinese forest-science academy was from 1984, and carried out systematic research to furniture producing moulded wood chips articles technology, its achievement was identified in 1987 years by former national forestry portion ministerial level.The nineties so far, timber institute of Chinese forest-science academy scientific research personnel study other production Technology basis on, in conjunction with domestic practice situation, through long-term research practice work, creatively invent again two-step method mold pressing production technology.
The mould pressing technology of Wo Zhalite, through the development of more than 60 years, has the mould pressing technology of 24 large molded goods producers employing Wo Zhalite of the countries such as Germany, Britain, France, Italy, Austria, Israel, Spain, Turkey, Yugoslavia, the U.S., Mexico, China, Japan, India, Czech, Iran in world wide.
In China, Zhanjiang mold pressing wood product industry introduces pressing production line from German Warsaw Li Di company in 1987, in conjunction with timber institute of Chinese forest-science academy particle moulding technical research achievement, and annual production mold pressing furniture item 1,070,000, pressed decorative board 250,000 m 2, product is in great demand at home and abroad.Anhui Shitai County, continent, Fujian, Qingzhou in Shandong province also produce furniture producing moulded wood chips articles under the technical support of this institute.
Qingdao woodenware 13 factory, Deng30Duo Ge factory of plywood factory of Cenxi county, Guangxi pressing production line are gone into operation in succession.The factory such as Shanghai Artificial Plate Machine Plant, Harbin Forestry Machinery Factory can complete production particle moulding production line on the basis of digesting and assimilating introducing equipment.
The novel high-pressure moulding plate production line that Hecheng Decorative Material Manufacture Co., Ltd., Beijing developed in calendar year 2001, the omnipotent moulding press of KH-150 type that in introduction, Haikang rainbow wood industry is produced, with agriculture forestry waste straw etc. for raw materials for production produce artificial board, and its material is carried out secondary operations, and the product produced is molded door, compoiste wood floor and furniture and some other process stempressing goods.These products all belong to new and high technology Green Product, have achieved national spark program famous-brand and high-quality goods right to use trademark.Applying of this production technology, to solving being becoming tight day of China's wood supply amount, effectively utilizes agriculture forestry waste, solves agriculture forestry waste and to burn the pollution caused to environment, serve positive role.
In pre-stage test of the present invention, adopting wood materials to be Acacia and eucalyptus industrial wood waste is primary raw material, chooses pressing best performance seeds.
Acacia seeds belong to Mimosaceae (Mimosaceae) Acacia (Acacia), have kind more than 1200, mainly originate in Australia and some other torrid zone, semi-tropical arid, semiarid zone.China introduces Acacia Species the thirties in 20th century from Australia and Papua New Guinea.Acacia rachii is very strong to soil suitability, fast-growing, and energy is fixed nitrogen rapidly, has good improvement soil function.
Eucalypt species belongs to Myrtaceae (Myrtaceae) eucalyptus and belongs to (Eucalyptus).Originate in Australia, introduced a fine variety as far back as 1894, mainly as ornamental plant and Shade Trees.One of global most important artificial afforestration seeds are become in recent decades.
The density of above-mentioned seeds is all higher, their form and character heterogeneity, the poor effect directly used, these materials are seldom utilized in particieboard processing, the present invention, as once exploring, works out production technology and the parameter of material product, makes it be able to fully, rationally and effectively utilize.
Summary of the invention:
The present invention with the industrial wood waste of Acacia for primary raw material, phenolic resins (PF) is adhesive, vinyl acetate-ethylene copolymerization emulsions (VAE) is adhesive promoter, under laboratory conditions, " two-step method " particle moulding process is adopted to carry out mold pressing to material, obtain the technological parameter of best pressing performance, design parameter is as follows:
1) material pre-pressing process: after applying glue, wood shavings moisture content is 20%, auxiliary agent VAE applied amount is 4%, precompressed temperature and time is respectively 80 DEG C and 9min, and preload pressure is 1.5MPa.
2) producing moulded wood chips articles manufacture optimal processing parameter is: seeds are Acacia, and resin added is 10%, and target density is 1.00gcm -3, hot pressing time and temperature are respectively 7min and 180 DEG C, and hot pressing pressure is 5MPa.
Beneficial effect of the present invention:
The artificial cultivation area of China's Acacia is more than 5.33 ten thousand hm 2, cultural area has expanded to 950,000 hm of 5 provinces and regions, south China 2soil.Acacia timber, except as fire wood, extensively uses in papermaking, glued board and fancy veneer, solid wood furniture, tannin extract and feed etc.
Acacia density is higher, their form and character heterogeneity, the poor effect of direct use, by mould pressing process of the present invention and manufacture process, the physical and mechanical property of the Wood moulding product suppressed all meets or exceeds the requirement of particieboard standard GB/T/T4897.1 ~ 4897.7-2003.
Current, it is existing for many years that World Developed Countries adopts particle moulding production technology to produce producing moulded wood chips articles, and production technology is gradually improved; China belongs to developing country, the most of sheet material all belonging to common flat-press process and prepare of the particieboard of domestic production, large-scale corporation's economic benefit is good, but due to a lot of middle-size and small-size particieboard enterprise in addition of China, is on the verge of to stop production because production scale is little, production capacity is low; Particle moulding production capital equipment is complete tailored version, and grassroot project investment is large, and medium-sized and small enterprises can not bear; If carry out less equipment module and reform and technological innovation on existing basis, adopting manufacture method of the present invention---two-step method mold pressing production technology is to produce producing moulded wood chips articles; Its product not only applied range, and added value is high, economic and social benefit is considerable, meanwhile, also efficiently, reasonably can make full use of timber industry industrial wood waste and the poor artificial fast-growing woods material of character; Like this, just open a direction for forest product industry materials processing and certain basis has been established in the development from now on of Wood Science and Technology subject, Here it is beneficial effect place of the present invention.
Detailed description of the invention:
(1) precompressed
Pre-pressing process directly affects hot-die die pressing product quality, and in order to ensure the quality of molded product, the paving structure of slab is three layers, and the watch core layer of raw material is mated formation than being 3: 4: 3; Mating formation of slab is of a size of 30 × 30cm 2; Squeeze time=9min; Precompressed temperature=80 DEG C; Preload pressure is 1.5MPa; Vinyl acetate-ethylene copolymerization emulsions (VAE) applied amount=2%, wood shavings moisture content=20% after applying glue.By adopting finger gauge to ensure sheet material final thickness during hot pressing, after hot pressing, size of plate blank is about 310 × 310 × 6mm 3.
(2) hot pressing
Accompanying drawing is shown in concrete steps and technological process, and adopt fixing hot pressing pressure 5MPa, select hot pressing time 5 ~ 9min, hot pressing temperature Application Range 150 ~ 180 DEG C, resin added controls in 6 ~ 10% scopes, and density range is at 0.75 ~ 1.00gcm -3.Orthogonal experiment is adopted to test.
Accompanying drawing 1 is " two-step method " Process of Molded Particleboard Products flow chart.
(3) detect
Carry out according to particieboard standard GB/T/T4897.1 ~ 4897.7-2003 and national wood-based plate and face artificial board physical and chemical performance test method GB/T17657-1999.
The index of the paper examines of the performance of producing moulded wood chips articles is plate face apparent mass, MOR (MOR), internal bond strength (IB) and 24h thickness swelling rate (24hTS).
The detection method of plate face apparent mass tears situation for plate surface wood shavings after observation hot pressing mold pressing stretch, and adopts " many people visual score method " to carry out, namely gives a mark to product surface by same people.

Claims (3)

1. based on the preparation technology that wooden producing moulded wood chips articles is produced, it comprises material pre-pressing process, and pressing fabrication process parameters, is characterized in that: it also comprises seeds that invention adopts, the adhesive type of use and the kind of auxiliary agent.
2. material pre-pressing process according to claim 1, is characterized in that: wood shavings moisture content after applying glue, auxiliary agent applied amount, the temperature of precompressed, squeeze time and preload pressure.
3. pressing fabrication process parameters according to claim 1, is characterized in that: the seeds of use, resin added, density, hot pressing time, hot pressing temperature, hot pressing pressure.
CN201410026222.0A 2014-01-21 2014-01-21 Technology for producing wood particle mould pressed product CN104786338A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107984589A (en) * 2017-12-31 2018-05-04 寿光市鲁丽木业股份有限公司 A kind of high-strength directional particieboard and its production method
CN110103311A (en) * 2018-02-01 2019-08-09 寿光市鲁丽木业股份有限公司 A kind of heat pressing process of environment-friendly type oriented wood chipboard

Citations (4)

* Cited by examiner, † Cited by third party
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CN1473692A (en) * 2003-06-18 2004-02-11 中国林业科学研究院木材工业研究所 Process for producing moulded wood chips articles
CN101066606A (en) * 2007-06-14 2007-11-07 西南林学院 Process of producing bamboo chipboard
CN101502976A (en) * 2008-02-05 2009-08-12 重庆星星套装门有限责任公司 Method for preparing bamboo wood shaving crushed aggregates molded sheet material with three-dimensional ridge design and equipment combination for realizing the method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87103724A (en) * 1987-05-23 1988-02-24 青岛家具研究所 Particle moulding time processing goods and manufacture method thereof and special equipment
CN1473692A (en) * 2003-06-18 2004-02-11 中国林业科学研究院木材工业研究所 Process for producing moulded wood chips articles
CN101066606A (en) * 2007-06-14 2007-11-07 西南林学院 Process of producing bamboo chipboard
CN101502976A (en) * 2008-02-05 2009-08-12 重庆星星套装门有限责任公司 Method for preparing bamboo wood shaving crushed aggregates molded sheet material with three-dimensional ridge design and equipment combination for realizing the method

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Title
关晓平: "刨花模压制品质量提高的措施分析", 《机电产品开发与创新》 *
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王正、高黎: "相思、桉树刨花板两步法模压工艺的研究", 《林业科学》 *
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107984589A (en) * 2017-12-31 2018-05-04 寿光市鲁丽木业股份有限公司 A kind of high-strength directional particieboard and its production method
CN110103311A (en) * 2018-02-01 2019-08-09 寿光市鲁丽木业股份有限公司 A kind of heat pressing process of environment-friendly type oriented wood chipboard

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Application publication date: 20150722

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