CN1316323A - Technology for preparing colour plastic-wood section and pallet - Google Patents
Technology for preparing colour plastic-wood section and pallet Download PDFInfo
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- CN1316323A CN1316323A CN 01115502 CN01115502A CN1316323A CN 1316323 A CN1316323 A CN 1316323A CN 01115502 CN01115502 CN 01115502 CN 01115502 A CN01115502 A CN 01115502A CN 1316323 A CN1316323 A CN 1316323A
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Abstract
A technology for making colour plastic-wood section and pallet includes such steps as modifying thermoplastic resin with wood fibres, adding modifier, lubricant, viscosity increaser, anti-ageing agent and pigments, making needed die, and direct extruding out. Said section or pallet features high worm-eating corrosion, compression and ageing resistance, difficult burning, not absorbing water, and low cost.
Description
The present invention relates to a kind of thermoplastic profiles, refer in particular to a kind of colored plastic-wood section of composite filler extrusion molding and colored preparation method of moulding wooden block dish goods of moulding fat (containing reworked material) and wood fibre (containing various wood powders) with thermoplasticity.
After in December, 1998, the U.S., Canada, European Union etc. implement new plant quarantine standard to China's export goods Wooden package in succession, and require to take stifling or high-temperature disinfection treatment, otherwise will deny entry.After this, the side provided the stifling/certificate of disinfection of China entry and exit quarantine office signature during the U.S., Canada all required, and European Union, Britain also require China to do same processing in succession.Therefore, if calculate with China's 5,000,000 containers of annual outlet, above-mentioned disposal cost is just up to 1,500,000,000 RMB, and its processing time needs 8,000 ten thousand hours.
To this, State Ministry of Foreign Trade and Economic Cooperation, State Economic and Trade Commission, General Administration of Customs, Entry-Exit Inspection and Quarantine Bureau issue emergency notice jointly, require relevant enterprise to improve the export goods Wooden package, to guarantee that goods exports smoothly, avoid causing bigger economic loss.
In addition, since on September 1st, 1998, China has prohibited primary timber exploitation provinces and regions cut down natural forest, and the lumberman has become the tree planting workman.And will be above a billion cubic meter to the timber demand amount of China in 2000, but supply has only 60,000,000 cubic metres.
As seen, the outlet wooden package of China at present, the task of top priority of palletized transport industry are exactly to seek the goods that a kind of packing material of export goods need not be fumigated processing and alternative timber packing.
The object of the present invention is to provide a kind of preparation method of colored plastic-wood section, it is with wood shavings, sawmilling, peanut shell, waste and old wood fibre and thermoplastic resins (containing waste and old regenerated plastics) such as wood branch, in certain proportion, add special adhesive, additive and pigment, form through extrusion molding.
Another object of the present invention is to provide a kind of colour to mould the preparation method of wooden block dish goods, it can according to client's demand produce prepare different colours and with the corresponding pallet goods of goods packing shape.
The production method of thermoplastic type material forming of the present invention is by lignocellulose material modification filling thermoplastic resin, after adding special additive, and extrusion molding.Wherein, described thermoplastic resin can be single resin, also can be two components or multicomponent resin; Described lignocellulose comprises cauline leaf, the bar of sawdust, wood powder and other Woody plant, plants pulverizing back fiber-like such as shell; Described special additive comprises lubricant, thickener, compatilizer, pigment and age resister.
The object of the present invention is achieved like this:
A kind of preparation method of colored plastic-wood section is: the filling thermoplastic resin adds part modifier simultaneously with the lignocellulose material modification, lubricant, and tackifier, behind age resister and the pigment, directly extrusion molding.
The technological process of the production method of the colored plastic-wood section of the present invention is:
1, wood-fibred (powder): take 10～200 purpose wood powders;
2, the dry processing: handle the back water content and be controlled at 13%; Dryer is that hot-air seasoning also can be a microwave drying, also can be natural air drying, must satisfy the wood powder water content 13%;
3, other auxiliary agent comprises: lubricant, tackifier, compatilizer, ageing-resistant dose etc.
4, new or waste thermoplastic resin: the single or multicomponent compound that comprises PP, PE, PVC, ABS etc. is formed.
5, pigment: the color and the interpolation umber that decide the pigment of interpolation by client's needs.
6, wood powder granulation:,, be extruding pelletization under 13% the situation in the wood powder water content without adding any additives by special-purpose wood powder comminutor.The water content of wood powder is lower than below 3% after the granulation.Wood powder Granulation Equipments schematic diagram as shown in Figure 3.
7, add umber by the metering of each material of prescription decision, the adding in the feed bin of the extruder that evenly adds materials automatically,, blanking is extruded then.
8, extrusion molding: the screw rod extruded material by extruder is to mould, by mould and modular system, plastic-wood material is extruded as meet the wooden colour section bar of moulding that design size requires.
Another preparation method of the colored plastic-wood section of the present invention is: the filling thermoplastic resin adds part modifier simultaneously with the lignocellulose material modification, lubricant, tackifier, behind age resister and the pigment, moistureproof standby after the blend granulation, or by drying make the grain plastic-wood material, the extruder continuous extrusion is the Wood-plastic profiles with certain section structure.
The technological process of another production method of the colored plastic-wood section of the present invention is:
1, wood-fibred (powder): take 10～200 purpose wood powders;
2, the dry processing: oven dry is handled back wood powder water content and is controlled at below 3%; Dryer is a hot-air seasoning, also can be microwave drying, or natural air drying, must satisfy the wood powder water content below 3%;
3, other auxiliary agents comprise: lubricant, tackifier, compatilizer, ageing-resistant dose etc.;
4, new or waste thermoplastic resin: the single or multicomponent compound that comprises PP, PE, PVC, ABS etc. is formed;
5, pigment: can decide the color of adding pigment according to client's needs and add umber;
6, mix: the interpolation umber by each material of prescription decision, all join in the batch mixer, between 90 ℃～120 ℃, to mix 5～10 minutes, concrete mixing temperature and incorporation time are decided by prescription;
7, standby after the granulation: the plastic-wood material that mixes is moistureproof standby after the extruder granulation;
Its prilling condition is: 140 ℃～170 ℃ of head extrusion temperatures, actual temp are determined that by material wherein new (containing old) the material head extrusion temperature of polyethylene (PE) is 140 ℃; New (containing old) the material head extrusion temperature of polypropylene (PP) is 170 ℃; The head extrusion temperature of other material or multi-component material new (containing old) is about 160 ℃;
8, extrusion molding: the screw rod extruded material by extruder is to mould, by mould and modular system, plastic-wood material is extruded as meet the wooden colour section bar of moulding that design size requires.
The preparation method that a kind of colour is moulded wooden block dish goods is: the filling thermoplastic resin adds part modifier simultaneously with the lignocellulose material modification, lubricant, and tackifier, behind age resister and the pigment, directly extrusion molding; Process pairing extrusion molding mould according to the shape and the size of required pallet then, and directly extrusion molding.
Another preparation method that colour of the present invention is moulded wooden block dish goods is: the filling thermoplastic resin adds part modifier simultaneously with the lignocellulose material modification, lubricant, tackifier, behind age resister and the pigment, moistureproof standby after the blend granulation, or by the plastic-wood material of making grain of drying, the extruder continuous extrusion is the Wood-plastic profiles with certain section structure, becomes colour according to market demand assembling then and moulds wooden block dish goods.
Wherein some colour is moulded wooden block dish goods and is born pressure greatly because of needs, thus need when assembling, to consider rational section bar collocation, to satisfy actual needs.
Related wood-fibred fully can be by timber leftover bits and pieces, sawdust, or fiber such as crops is pulverized the back and replaced; Be a granulated into the wood powder particle or directly use all can.
Wherein, resin then utilizes waste and old thermoplastic reclaimed materials or virgin material to comprise the single or multicomponent compound composition of PP, PE, PVC, ABS etc.
Other auxiliary agent is: lubricant, tackifier, compatilizer, ageing-resistant dose, pigment etc.
Various proportion of raw materials are: resin: 15～30%; Wood powder: 85～70%; Other auxiliary agent: 10～20%.
Colored plastic-wood section can be circle or square; Its section structure can be a hollow, also can be real core; Its size can be decided according to the actual requirements; The thickness of goods can reach intensity according to actual needs and decide; Related mould can process according to the size of actual product.
Wood powder granulation colour is moulded wooden block dish goods, by the above section bar of extruding by size and requirement and later stage processing assembles.
Required production equipment is:
1, extruder: single screw rod or twin-screw all can, but that power is twice than general extruder is above, it is fixed that concrete power is come by product size.
2, mould: use the mould of moulding and typing logotype formula, can enhance productivity like this.
3, typing platform and cast-cutting saw and roll-over table thereof: can purchase by market by length.
4, wood powder dryer: conventional dryer, air drier or microwave dryer all can.
5, wood powder comminutor: use food or feed processing comminutor (as shown in Figure 3).
6, plastic granulator: the comminutor commonly used of band exhaust gets final product.
7, pulverizer: the machine that can directly pulverize the plastic-wood section of length more than a meter gets final product.
8, colour is moulded wooden block dish mounting equipment: contain puncher; Cast-cutting saw; Angle-cleaning machine; Baling press etc.
The invention has the advantages that:
1, the advantage of comprehensive wood pallets on performance has characteristics such as anticorrosive, withstand voltage anti-aging, the difficult combustion of insect protected does not absorb water; And the export goods packing material need not be fumigated;
2, be easy to modernized instrument and carry automatically, can reduce labour cost; Substitute the timber-work outlet and needn't show quarantine certificate, saved customs's handling and survey fees, so reduced cost of transportation without chemical treatment;
3, repeat usage height, recyclable utilization so save timber, reduces and pollutes, and protects forest resources, and has reached the purpose that helps administering environment.
4, because waste or used plastics is general; Wood powder also can be by wood shavings, the sawdust rice husk, and wooden leftover bits and pieces etc. process, so the raw material sources of these goods are extensive, and cheap, its integrated cost is low, has competitiveness on market;
5, these goods key property and timber are suitable, can saw, can dig, also can follow closely; Its durability is better than woodwork;
6, the assembling of these goods can change according to market and customer requirement flexibly;
7, can produce various colour section bars and pallet according to market and customer requirement;
8, wood plastic product has the insect bite of not being afraid of, and antiacid alkali is ageing-resistant, is difficult for characteristics such as suction;
9, the present invention can be widely used in the work of depositing and the cartage service in each field such as packed and transported, machine-building, beverage/food, automobile chemical industry, electronics, pottery, and market prospects are extremely wide, are the ideal substitute of wood pallets.
Fig. 1 moulds the process chart of the production method of wooden block dish goods for colour of the present invention.
Fig. 2 moulds the process chart of another production method of wooden block dish goods for colour of the present invention.
Fig. 3-1 is a wood powder Granulation Equipments partial structurtes schematic diagram used in the present invention.
Fig. 3-2 is a wood powder Granulation Equipments internal structure schematic diagram used in the present invention.
Fig. 3-3 is the local enlarged diagram of wood powder Granulation Equipments used in the present invention.
Below in conjunction with embodiment and Figure of description, the present invention is further illustrated.
Embodiment 1:
Colour of the present invention is moulded the technological process of the production method of wooden block dish goods, as shown in Figure 1:
1, wood-fibred (powder): take 10～200 purpose wood powders;
2, the dry processing: handle the back water content and be controlled at 13%; Dryer is that hot-air seasoning also can be a microwave drying, also can be natural air drying, must satisfy the wood powder water content 13%;
3, other auxiliary agent comprises: lubricant, tackifier, compatilizer, ageing-resistant dose etc.
4, new or waste thermoplastic resin: the single or multicomponent compound that comprises PP, PE, PVC, ABS etc. is formed.
5, pigment: the color and the interpolation umber that decide the pigment of interpolation by client's needs.
6, wood powder granulation:,, be extruding pelletization under 13% the situation in the wood powder water content without adding any additives by special-purpose wood powder comminutor.The water content of wood powder is lower than below 3% after the granulation.Wood powder Granulation Equipments schematic diagram as shown in Figure 3.
7, add umber by the metering of each material of prescription decision, the adding in the feed bin of the extruder that evenly adds materials automatically,, blanking is extruded then.
8, extrusion molding: the screw rod extruded material by extruder is to mould, by mould and modular system, plastic-wood material is extruded as meet the wooden colour section bar of moulding that design size requires.
9, cut into required size: be cut into suitable dimensions by customer requirement, it is standby to put into the warehouse.
10, be assembled into colour and mould the wooden block dish: be similar with assembling wooden block dish.
11, reclaim: join after the plastic-wood section of waste product can be pulverized directly to extrude in the extruder and get final product, other process conditions are constant.
Wherein, other auxiliary agent comprises lubricant, tackifier, and compatilizer, ageing-resistant dose and pigment, its proportioning umber is as follows:
Lubricant: two parts in paraffin/interpolation: i.e. 2% of wood powder and resin total amount (following metering method herewith);
Tackifier: 5 parts of phthalic acid second dioctyl esters (DOP)/interpolation;
Compatilizer: stearic acid and haloflex (as, the 140B type that produces is spun in the Weihe River, Shandong)/each two parts;
Ageing-resistant dose: titanium dioxide (being titanium dioxide)/2 parts;
Pigment: an amount of.Can decide the color of pigment according to client's needs and add umber.
Various proportion of raw materials are: resin: 15～30%; Wood powder: 85～70%; Other auxiliary agent: 10～20%.
Embodiment 2:
Colour of the present invention is moulded the technological process of another production method of wooden block dish goods, as shown in Figure 2:
1, wood-fibred (powder): take 10～200 purpose wood powders;
2, the dry processing: oven dry is handled back wood powder water content and is controlled at below 3%; Dryer is a hot-air seasoning, also can be microwave drying, or natural air drying, must satisfy the wood powder water content below 3%;
3, other auxiliary agents comprise: lubricant, tackifier, compatilizer, ageing-resistant dose etc.;
4, new or waste thermoplastic resin: the single or multicomponent compound that comprises PP, PE, PVC, ABS etc. is formed;
5, pigment: can decide the color of adding pigment according to client's needs and add umber;
6, mix: the interpolation umber by each material of prescription decision, all join in the batch mixer, between 90 ℃～120 ℃, to mix 5～10 minutes, concrete mixing temperature and incorporation time are decided by prescription;
7, standby after the granulation: the plastic-wood material that mixes is moistureproof standby after the extruder granulation;
Its prilling condition is: 140 ℃～170 ℃ of head extrusion temperatures, actual temp are determined that by material wherein new (containing old) the material head extrusion temperature of polyethylene (PE) is 140 ℃; New (containing old) the material head extrusion temperature of polypropylene (PP) is 170 ℃; The head extrusion temperature of other material or multi-component material new (containing old) is about 160 ℃;
8, extrusion molding: the screw rod extruded material by extruder is to mould, by mould and modular system, plastic-wood material is extruded as meet the wooden colour section bar of moulding that design size requires.
9, cut into required size: be cut into suitable dimensions by customer requirement, it is standby to put into finishing room.
10, assembling finished product colour is moulded the wooden block dish: similar with assembling wooden block dish.
11, reclaim: after the plastic-wood section of waste product can be pulverized, join directly to extrude in the extruder again and get final product, other process conditions are constant.
Wherein, other auxiliary agent comprises lubricant, tackifier, compatilizer, ageing-resistant dose and pigment, and its proportioning umber is as follows:
1, lubricant: two parts in paraffin/interpolation: i.e. 2% of wood powder and resin total amount (following metering method is herewith):
2, tackifier: 5 parts of phthalic acid second dioctyl esters (DOP)/interpolation;
3, compatilizer: stearic acid and haloflex (as, the 140B type that produces is spun in the Weihe River, Shandong)/each two parts;
4, ageing-resistant dose: titanium dioxide (being titanium dioxide)/2 parts;
5, pigment: an amount of, decide by actual needs.
Various proportion of raw materials are: resin: 15～30%; Wood powder: 85～70%; Other auxiliary agent: 10～20%.
Wood powder Granulation Equipments schematic diagram used in the present invention, as shown in Figure 3.
This wood powder Granulation Equipments is the container of a tubular, and this container has the charge door that can add wood powder continuously, and internal structure is shown in Fig. 3-1,3-2.This equipment container wall is that stainless steel material is made; Portion is provided with four rotating metallic roll 2 within it; Also be provided with transmission device 5, it can drive macro-axis 4 and rotate, and has driven the rotation of sieve tray 3 simultaneously; When macro-axis 4 rotated, little axle 1 also drove four metallic roll and is rotating.Wherein macro-axis 4 and little axle 1 are two transmission devices, and with the rotational speed of needs, promptly four metallic roll are when rotating along with macro-axis 4, also along with the little axle of oneself is being made spinning motion separately.The structure enlarged drawing of metallic roll 2 and sieve tray 3 is shown in Fig. 3-3.
The operation principle of this wood powder Granulation Equipments is:
After wood powder adds cylindrical container by charge door, when macro-axis 4 rotates, also along with own little at spinning motion.Wood powder is pushed fully and is rubbed in this rotation, wood powder heating at this moment, and end temperature can reach about 100 ℃, and the most of moisture in extruding and friction process in the wood powder is because that friction is heated is former thereby become steam and vapor away.Steam is discharged from exhaust outlet.In the time of friction and Extrusion and heating, wood powder is entered into the sieve aperture of sieve tray by four metallic roll compactings, and the sieve aperture up/down perforation has the length of 15～50MM.After wood powder is compacted and presses full sieve aperture, because constantly being pressed into of follow-up wood powder, the feasible wood powder bar that has been compacted, the other end by sieve aperture is extruded, form the wood powder of strip at last, the wood powder of these strips breaks to form the wood grain naturally owing to not having viscosity and toughness when extruding goes out, 10MM below, by actual needs by the diameter of sieve aperture processing sieve tray on determined substantially by diameter for the length of these wood grains.The batten that is extruded is accepted by following material-receiving device, reach and transfer in the bin area after a certain amount of, before the charging sealing in the end, wood grain should natural cooling and drying, remaining small amount of moisture has also just vapored away in the wood powder in this process, and the wood grain that obtains at last is that water content is lower than 3% the wood grain of extruding the colour section bar needs that meets.The even metal rib is arranged on the surface of four metallic roll, and the effect of these ribs is to increase extruding and friction wood powder, makes the wood powder heating fast and be extruded to become real.
With main pallet goods in the market: Wooden tray, plastic pallet and the tabulation of a small amount of wood plastic product pallet are compared as follows:
The main performance that colored plastic-wood section of the present invention and colour are moulded the wooden block dish is as follows:
| The section bar index | Performance indications | The pallet index | Related data |
| Water absorption rate | ＜0.4％ | 1. each pallet 3. physical dimension of the unlimited 2.20～50Kg/ of profile length: little and good stability 4. operating temperatures of tolerance :-25～45 ℃ of 5. shelf holds the cultivation ability:＞2 ton of 6. pallet holds the cultivation ability:＞5 tons | |
| Bending strength (GB9341) | 18.6MPa | Same section bar | |
| Bending modulus (GB9341) | 1.18GPa | Same section bar | |
| Density | 0.98-1.1g/cm 3 | Same section bar | |
| Impact strength (GB1843) | 39.5J/m | Same section bar | |
| Heat distortion temperature (ASTM D648) | 80.3℃ | Same section bar |
Annotate: GB9341/GB1843/ASTM/D648: be the testing of materials standard method.
Claims (7)
1, a kind of production method of colored plastic-wood section, it is characterized in that: it comprises
A, wood-fibred (powder): take 10～200 purpose wood powders;
B, the dry processing: handle the back water content and be controlled at 13%; Dryer is that hot-air seasoning also can be a microwave drying, also can be natural air drying, must satisfy the wood powder water content 13%;
C, other auxiliary agent comprise: lubricant, tackifier, compatilizer, ageing-resistant dose;
D, new or waste thermoplastic resin: the single or multicomponent compound that comprises PP, PE, PVC, ABS etc. is formed;
E, pigment: the color and the interpolation umber that decide the pigment of interpolation by client's needs;
F, wood powder granulation:,, be extruding pelletization under 13% the situation in the wood powder water content without adding any additives by special-purpose wood powder comminutor.The water content of wood powder is lower than below 3% after the granulation;
G, add umber by the metering of each material of prescription decision, the adding in the feed bin of the extruder that evenly adds materials automatically,, blanking is extruded then;
H, extrusion molding: the screw rod extruded material by extruder, is extruded as plastic-wood material and meets the colored plastic-wood section that design size requires by mould and modular system to mould.
2, a kind of production method of colored plastic-wood section, it is characterized in that: it comprises
A, wood-fibred (powder): take 10～200 purpose wood powders;
B, the dry processing: oven dry is handled back wood powder water content and is controlled at below 3%; Dryer is a hot-air seasoning, also can be microwave drying, or natural air drying, must satisfy the wood powder water content below 3%;
C, other auxiliary agents comprise: lubricant, tackifier, compatilizer, ageing-resistant dose etc.;
D, new or waste thermoplastic resin: the single or multicomponent compound that comprises PP, PE, PVC, ABS etc. is formed;
E, pigment: can decide the color of adding pigment according to client's needs and add umber;
F, mix: the interpolation umber by each material of prescription decision, all join in the batch mixer, between 90 ℃～120 ℃, to mix 5～10 minutes, concrete mixing temperature and incorporation time are decided by prescription;
Standby after g, the granulation: the plastic-wood material that mixes is moistureproof standby after the extruder granulation;
Its prilling condition is: 140 ℃～170 ℃ of head extrusion temperatures, actual temp are determined that by material wherein new (containing old) the material head extrusion temperature of polyethylene (PE) is 140 ℃; New (containing old) the material head extrusion temperature of polypropylene (PP) is 170 ℃; The head extrusion temperature of other material or multi-component material new (containing old) is about 160 ℃;
H, extrusion molding: the screw rod extruded material by extruder is to mould, by mould and modular system, plastic-wood material is extruded as meet the wooden colour section bar of moulding that design size requires.
3, a kind of colour is moulded the production method of wooden block dish goods, it is characterized in that: it comprises
A, wood-fibred (powder): take 10～200 purpose wood powders;
B, the dry processing: handle the back water content and be controlled at 13%; Dryer is that hot-air seasoning also can be a microwave drying, also can be natural air drying, must satisfy the wood powder water content 13%;
C, other auxiliary agent comprise: lubricant, tackifier, compatilizer, ageing-resistant dose;
D, new or waste thermoplastic resin: the single or multicomponent compound that comprises PP, PE, PVC, ABS etc. is formed;
E, pigment: the color and the interpolation umber that decide the pigment of interpolation by client's needs;
F, wood powder granulation:,, be extruding pelletization under 13% the situation in the wood powder water content without adding any additives by special-purpose wood powder comminutor.The water content of wood powder is lower than below 3% after the granulation;
G, add umber by the metering of each material of prescription decision, the adding in the feed bin of the extruder that evenly adds materials automatically,, blanking is extruded then;
H, extrusion molding: the screw rod extruded material by extruder is to mould, by mould and modular system, plastic-wood material is extruded as meet the wooden colour section bar of moulding that design size requires;
I, cut into required size: be cut into suitable dimensions by customer requirement, it is standby to put into the warehouse;
J, be assembled into colour and mould the wooden block dish: be similar with assembling wooden block dish;
K, recovery: join after the plastic-wood section of waste product can be pulverized directly to extrude in the extruder and get final product, other process conditions are constant.
4, a kind of colour is moulded the production method of wooden block dish goods, it is characterized in that: it comprises
A, wood-fibred (powder): take 10～200 purpose wood powders;
B, the dry processing: oven dry is handled back wood powder water content and is controlled at below 3%; Dryer is a hot-air seasoning, also can be microwave drying, or natural air drying, must satisfy the wood powder water content below 3%;
C, other auxiliary agents comprise: lubricant, tackifier, compatilizer, ageing-resistant dose etc.;
D, new or waste thermoplastic resin: the single or multicomponent compound that comprises PP, PE, PVC, ABS etc. is formed;
E, pigment: can decide the color of adding pigment according to client's needs and add umber;
F, mix: the interpolation umber by each material of prescription decision, all join in the batch mixer, between 90 ℃～120 ℃, to mix 5～10 minutes, concrete mixing temperature and incorporation time are decided by prescription;
Standby after g, the granulation: the plastic-wood material that mixes is moistureproof standby after the extruder granulation;
Its prilling condition is: 140 ℃～170 ℃ of head extrusion temperatures, actual temp are determined that by material wherein new (containing old) the material head extrusion temperature of polyethylene (PE) is 140 ℃; New (containing old) the material head extrusion temperature of polypropylene (PP) is 170 ℃; The head extrusion temperature of other material or multi-component material new (containing old) is about 160 ℃;
H, extrusion molding: the screw rod extruded material by extruder is to mould, by mould and modular system, plastic-wood material is extruded as meet the wooden colour section bar of moulding that design size requires;
I, cut into required size: be cut into suitable dimensions by customer requirement, it is standby to put into finishing room;
J, assembling finished product colour are moulded the wooden block dish: similar with assembling wooden block dish;
K, recovery: after the plastic-wood section of waste product can be pulverized, join directly to extrude in the extruder again and get final product, other process conditions are constant.
5, mould the preparation method of wooden block dish goods according to the colour described in claim 3 or 4, it is characterized in that: described other auxiliary agent comprises lubricant, tackifier, compatilizer, ageing-resistant dose and pigment, and its proportioning umber is:
A, lubricant: two parts in paraffin/interpolation: promptly 2% of wood powder and resin total amount;
B, tackifier: 5 parts of phthalic acid second dioctyl esters (DOP)/interpolation;
C, compatilizer: stearic acid and haloflex/each two parts;
D, ageing-resistant dose: titanium dioxide (being titanium dioxide)/2 parts;
E, pigment: an amount of, decide by actual needs.
6, according to the preparation method of the colored plastic-wood section described in claim 1 or 2, it is characterized in that: various proportion of raw materials are: resin: 15～30%; Wood powder: 85～70%; Other auxiliary agent: 10～20%.
7, mould the preparation method of wooden block dish goods according to the colour described in claim 3 or 4, it is characterized in that: various proportion of raw materials are: resin: 15～30%; Wood powder: 85～70%; Other auxiliary agent: 10～20%.
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| CNB011155027A CN1174848C (en) | 2001-04-26 | 2001-04-26 | Technology for preparing colour plastic-wood section and pallet |
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| CNB011155027A CN1174848C (en) | 2001-04-26 | 2001-04-26 | Technology for preparing colour plastic-wood section and pallet |
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