CN1275481A

CN1275481A - Method for production of bamboo-plastic combined artificial board material

Info

Publication number: CN1275481A
Application number: CN 00104556
Authority: CN
Inventors: 蒋道友
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-03-13
Filing date: 2000-03-13
Publication date: 2000-12-06

Abstract

A production method of bamboo-plastics composite artificial sheet material includes the following procedurees of plastics bamboo material rolling, drying and classfiying and pulling plastics to obtain sheet material, metering, laying, hot-pressing and cooling, etc., and is characterized by that the raw bamboo material is cut open, and fed into rolling mill and rolled into long-strip sheet material, its rolling pressure is controlled at 10-28 MP, hot-pressing temp. is controlled at 115 to 155 deg.c, and the hot-pressing time is controleld for 1-1.5 min. per mm of thickness, and cooling water temp. is controlled at 10-25 deg.C, and the bamboo fibre is laid in the mode of longitudinal layer and transverse layer alternately, and betwen two layers of bamboo fibre, a layer of plastic sheet mateerial is sandwiched, then the density of said product and its volume weight are controlled by means of metering, adjuvant and pressure. The plastics material uses waste and old plastics, and they are classified according to ethylene and propylene.

Description

The production method of bamboo-plastic combined artificial board material

The present invention relates to a kind of production method of bamboo-plastic combined artificial board material, comprise that primary bamboo wood becomes sheet material through mechanical roll compacting, extracting liq, oven dry, waste or used plastics classification pulling-on piece, the metering technologies such as hot pressing of mating formation belong to bamboo-plastic combined artificial board material processing class.

Is producer's discovery as yet now that raw material is produced bamboo-plastic combined artificial board material in China with bamboo wood, plastics, just there to be Canadian nationality Chinese Song Weining to stir hot pressing Production and Packaging sheet material with wood fibre and plastic particles adding assistant in the information of knowing.Domestic have minority enterprise plastic particles on probation to add broken bamboo wood heat of stirring to be pressed into sheet material, but above-mentioned several method all is to adopt: waste or used plastics is cleaned after extruding machine is squeezed into particulate and pulverizes back bamboo wood mix and be hot pressed into sheet material.Said method is actually popular medium density fiber board production technology at present, just uses plastics instead as adhesive without pollopas as adhesive.Though above-mentioned medium density fiber board production technology is through using plastics instead as adhesive but to can not change this technology numerous and diverse, and to drop into a large amount of soils, fund and equipment and need generally make an investment in the scale that could form 8000 cubic metres more than 8,000 ten thousand yuan and bring benefits from external introduction.This technology production cost height that has high input, product self intensity is low, particularly self long fibre is destroyed after crushed for bamboo wood, and the characteristics of the intrinsic tension of bamboo wood, compression strength are losing, thereby the sheet material physical property difference of producing loses the due multiple advantage of bamboo veneer self.

According to the deficiency of above-mentioned technology, purpose of the present invention is proposed.Purpose of the present invention is exactly the production method that a kind of bamboo-plastic combined artificial board material will be provided, and proposes to solve with bamboo wood and plastic tie symphysis to produce the scheme of bamboo-plastic combined artificial board material and reduce investment, reduces production costs and improves the measure of bamboo-plastic combined board quality.

The object of the present invention is achieved like this: the production method of bamboo-plastic combined artificial board material comprises that bamboo wood roll compacting oven dry plastics pulling-on piece interpolation auxiliary agent, metering are mated formation, hot-briquetting modeling process, it is characterized in that primary bamboo wood break down, send into Rolling mills for mechanical working of bamboo material and vertically roll into the long fibre sheet material, take out unnecessary liquid in the bamboo wood body, oven dry, metering are mated formation, plastics pulling-on piece adding assistant, the vertical roll compacting of certain employing during bamboo wood roll compacting, length of bamboo fibre intensity is not destroyed, and want thickness evenly, roll compacting pressure is controlled at the 10-28 MPa.Waste or used plastics is classified earlier, the classification plastics are sent into the sheet material that the pulling-on piece machine is drawn into required physical dimension, according to different purposes bamboo wood is mated formation by longitudinal and transverse direction, adopt the method for folder one deck plastic sheet between the two-layer bamboo wood of the horizontal one deck bamboo wood of vertical one deck bamboo wood to carry out when mating formation.The bamboo-plastic combined material that paves is sent into hot press be hot pressed into bamboo-plastic combined sheet material.Hot pressing time is by each millimeter thickness 1-1.5 minute, temperature be strict controlled in 115 ℃ to 155 ℃ again with 10-25 ℃ water by hot press cooling back the solid bamboo-plastic combined sheet material of shape.

Engage embodiment below and further describe the present invention.

With the producer that produces 8000 cubic metres of bamboo-plastic combined sheet material production capacity per year is example, the waste or used plastics that adopts domestic existing bamboo wood kind and market to reclaim is made raw material, with machinery bamboo wood is become long fibre material longitudinally to sending into the vertical roll compacting milling train of Rolling mills for mechanical working of bamboo material after cutting open with the roll compacting of bamboo wood horizontal broken.Dry, measure, mat formation after will becoming the sheet material that vertically distributes to take out excess liquid in the bamboo wood body " bamboo juice " simultaneously with the bamboo macrofiber material secondary roll compacting that rolls into, the factors such as thickness different according to primary bamboo wood be controlled at the 10-28 MPa with mill rolling force.To waste or used plastics classify, with different classes of plastics such as ethylene, propylenes, classification is sent into plastics pulling-on piece machine after cleaning and drying, be drawn into different-thickness, the practical sheet material of length and width degree, according to different product demands plastic sheet and bamboo wood are carried out after metering that compound to mat formation be to send into hot press after one deck bamboo wood one deck plastic sheet is mated formation to carry out hot pressing, be controlled between 115 ℃ to 155 ℃ according to different plastics kind hot pressing temperatures, hot pressing time was controlled at each millimeter thickness 1-1.5 minute, controlled the density unit weight of product with metering, pressure, auxiliary agent according to user's requirement.Bamboo is moulded prescription and moulds 2 and with the user's request resize ratio for bamboo 8, moulds 4 ratio but be higher than bamboo 6 most.

Production method of the present invention has adopted the applicant to obtain patent right and the technology that obtains the production method (patent No. 93115435.9-2) of the bamboo plywood of Chinese patent excellent prize has solved bamboo wood roll compacting as preceding half section production technology.Production method of the present invention has solved bamboo particle particieboard, medium density fibre board (MDF), plastic plate is easily aging, flexible type, MOR is poor, tension compression strength is low shortcoming, with bamboo macrofiber material endurance, the toughness of tension, resistance to compression, MOR advantages of higher and plastics, elasticity, the advantage that cementability is good engage the advantage that makes above-mentioned two kinds of materials and give full play of and obtain best mass effect.On operation: reduced the bamboo slashings, numerous and diverse bamboo wood section, pulverizing, the stirring of high pressure steam flow oven dry large cylinder, airflow pavement, the long distance of medium density fiber board assembly line transmits and 8 procedures such as waste or used plastics extruder grain, stirring, save 22000 square metres in factory building, save 7,000 ten thousand yuan of investments, save 30 mu in soil, production cost reduces by 50%, has reduced import equipment; Airflow dryer one cover, cylindrical machine, high pressure supercharger equipment one cover, wood chipping equipment, fiber pulverizer one cover, mixer conveyer, conveyer belt system, 10 complete equipments such as comminutor save 6,000,000 dollars of foreign exchanges, and production technology are simple.Adopt the waste or used plastics classification to increase commodity adaptability, auxilliary loading onto adopted plastics pulling-on piece and bamboo wood interlayer folder molding process, increased the bond degree of bamboo and plastics, adopts the vertical roll compacting of bamboo wood to keep the length intensity and the tension compressive property of bamboo fiber.Adopt metering, pressure, auxiliary agent control density, solved difficult problems such as unit weight intensity, and, satisfied the clad plate requirement: technical barrier in light weight, that density is low, the deck of boat requires the big density height of unit weight, collection dress plate desired strength adds density at the existing market demand.

Production process of the present invention is:

Bamboo wood → roll compacting (getting bamboo juice) → oven dry

→ measure → mat formation → hot pressing → cooling → composite board.

Plastics → classification → cleaning → pulling-on piece

Above-mentioned operation is that the example equipment needed thereby is all homemade with 8000 cubic metres of production lines, drop into 3 of 12000 square metres of hot presses of factory building, 2 in pulling-on piece machine, 3 of Rolling mills for mechanical working of bamboo material, 1,200 ten thousand yuan of fully investeds are saved 22000 square metres in factory building than current technology, 10 covers of equipment are saved 7,000 ten thousand yuan of investments, save 6,000,000 yuan of dollars of foreign exchange.The characteristics that the bamboo-plastic combined board that can produce the multiple market demand is arranged.

Claims

1, the production method of bamboo-plastic combined artificial board material comprises bamboo wood roll compacting oven dry, plastics classification, pulling-on piece metering, the hot pressing refrigerating work procedure of mating formation, it is characterized in that primary bamboo wood vertically sends into milling train roll compacting growth strip sheet material behind break down, its roll compacting power is controlled at the 10-28 MPa, hot pressing temperature is controlled at 115 ℃ to 155 ℃, hot pressing time was controlled at each millimeter thickness 1-1.5 minute, and cooling water temperature is at 10-25 ℃.

2, according to the production method of claim 1, bamboo wood should be by the horizontal one deck of vertical one deck when it is characterized in that mating formation, folder one deck plastic sheet in per two layers of bamboo wood, plastics adopt the recovery waste or used plastics to carry out pulling-on piece by different purposes in the classification back earlier, and the sheet material physical dimension is specifically implemented by customer requirements.

3, according to the production method of claim 1, it is characterized in that its bamboo is moulded prescription and is with physical dimension, thickness, density, the unit weight of metering, auxiliary agent, pressure control product: bamboo 80%, mould 20%.Light denseness sheet material is in bamboo 60%, adjusts between moulding 40%.