CN100395090C - Method for producing plywood with glueing on one side and plywood mould - Google Patents
Method for producing plywood with glueing on one side and plywood mould Download PDFInfo
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- CN100395090C CN100395090C CNB2005100104800A CN200510010480A CN100395090C CN 100395090 C CN100395090 C CN 100395090C CN B2005100104800 A CNB2005100104800 A CN B2005100104800A CN 200510010480 A CN200510010480 A CN 200510010480A CN 100395090 C CN100395090 C CN 100395090C
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Abstract
The present invention discloses a method for producing a plywood gluing one side and a rinsing mould plate of a plywood, which can cause small waste single plates to reuse and produce a mould plate with high quality. The single plate for each layer of the plywood is respectively glued with one side, and the shape and the size of the single plates are not limited; the single plates can be mutually in lap joint during assembly, so that each single plate can be respectively cemented with the adjacent single plate. The present invention increases the bonding strength of the plates, uses the small waste single plates, reduces to use logs with the diameter of 1.5 m3 to produce plywood mould plate of 1 m3, and greatly improves the timber utilization rate. In order to cause the mould plate to have the advantages of smooth surface, water resistance and durability, the present invention has the structure that one layer of resin impregnated paper mould is pasted on base materials of the plywood gluing one side, and reaches smoothness and high durability. The producing method of the present invention comprises the following steps: cutting off the logs; boiling the log sections in water; peeling cortices of the log sections; rotary cutting of the log sections; cutting the single plates; drying the single plates; displaying the single plates; arranging the single plates; adjusting glue; gluing the single plates; displaying; assembling; prepressing; repairing plates; hot-pressing; repairing plates; sawing edges; sanding; facing; separating; packing in a warehouse.
Description
Technical field:
The present invention is a kind of production method of glued board, belongs to the wood processing technique field.
Technical background:
Glued board is a kind of of wood-based plate, and plain form is to be the high-quality template of raw material with glued board.That uses when being building construction plays the high mould of a kind of smooth surface accuracy that concrete is used.Along with the development of building industry and the raising of class of buildings, also more and more higher to the quality requirement of building template, plain form promptly is the product that satisfies the high quality buildings thing.
The conventional coating technique of producing glued board is a double spread, veneer requirement to rubberised layer is whole or straight flange splicing, do not allow the termination to connect and overlap, do not allow overlap joint during especially to the veneer assembly of adjacent not rubberised layer, if overlapped, overlap does not have glue-line, and it is bonding to cause the part not have, and does not have bonding strength.Traditional double spread technology is to the quality requirement length unanimity of veneer, and limit portion is straight, otherwise misalignment, puts not sternly, and the 2.7 cubic metre logs of diameter more than 22 centimetres could be produced 1 cubic metre of glued board.The fritter veneer goes out of use and can not utilize again, and timber utilization rate is low.Serious waste of resources, production efficiency are not high.
Summary of the invention:
The present invention seeks to disclose a kind of single spreading glued board and glued board plain form production method.Discarded fritter veneer is utilized again, produce high-quality template.The number of plies of veneer can be that odd number also can be an even number during assembly.With each layer veneer of glued board all single face be coated with gluing, shape size to veneer is all unqualified, when assembly, can overlap each other, make between each piece veneer and the adjacent veneer and can both glue together, improved the bonding strength of plate, utilize discarded fritter veneer to make originally, be reduced to 1.5 cubic metres of logs of diameter and produce 1 cubic metre of plywood form, improved timber utilization rate greatly.Water-fast durable for the smooth surface that makes template, the present invention pastes one deck Tetefol mould on the base material of single spreading glued board, make it reach smooth durable.
A kind of single spreading glued board producing method of the present invention, technology is:
(1), log is sawed-off:
The length of log according to the net scale modest ability of glued board and wide, is added that allowance is sawn into juggle.
(2), juggle poach:
Juggle is put into the pond soak or heat, make timber increase moisture content, softening wood-fibred is so that rotary-cut.The poach of whether heating is to determine technological parameter according to seeds, and a general soft seeds water logging gets final product.The time that hard more seeds need be heated more is long, the temperature height.Temperature during general juggle rotary-cut gets final product at 10-70 degree centigrade.
(3), juggle peeling:
When being removed, the bark of juggle, is convenient to rotary-cut also but except silt particle.
(4), juggle rotary-cut:
The juggle of peeling is installed on the peeler by between the preset thickness 0.5-2.5 millimeter.Be peeled into veneer.
(5), veneer is sheared:
The veneer that rotary-cut is good adds that by the dead size of finished product glued board drying shrinkage surplus 6-12% adds saw limit surplus 30-50 millimeter, and it is stand-by to cut into the specification veneer, whole inadequately can be cut into the splicing striped veneer.
(6), veneer drying:
With shearing good veneer and fritter veneer with natural drying or send into drying machine and carry out drying, make the absolute drift of veneer reach 6-10%.
(7), veneer is displayed:
The laminated veneer lumber that drying is good is displayed, and its smooth evenly preparing against with moisture content is used, and the time of displaying is 12-24 hour.
(8), veneer arrangement:
The defective part place under repair of the veneer that drying is good is mended by replacing a damaged part, splicing etc., and dash board and central layer grade standby respectively.
(9), impregnation:
Glue is put into glue mixer add filler again, as flour, plant shell powder etc. are with glue furnishing pasty state.The addition of filler is that the 20-40% of glue weight adds curing agent again, is as the criterion with the process conditions that are fit to precompressed and hot pressing.
(10), veneer gluing:
The glue that mixes up is put into three roller single spreading machines, start glue spreader ready veneer is carried out single spreading, glue-spread is every square metre of 140-160 gram.
(11), display:
Veneer behind the single spreading is carried out opening display, glue faces up, and contacts with air according to the room temperature height, makes the evaporations such as moisture content in the glue, and assembly time is 30-60 minute.
(12), assembly
The blanket glued veneer of displaying is carried out assembly successively, one of gluing faces up, the texture of adjacent layer becomes an angle of 90 degrees, mutually vertical, if it is during even level, that the two-layer composition grain direction at center is consistent, prevent the finished product distortion, uppermost one deck does not carry out gluing, with the relatively large superficial layer of doing of edging, on the glue face that one deck is coated with before directly being swinging into.The book size of assembly is that the dead size of production board adds length, wide each saw limit surplus of 60 millimeters.
(13), precompressed
The glued board slab that assembly is good is sent into preformer, and unit pressure is every square centimeter of 1MPa, and precompressed 30-60 minute, make its one-step forming just, the whole preliminary bonding base that do not loose is advisable.
(14), repair plate
The slab of moulding is carried out surfacing, the removal of lamination is arranged, apertured with on the single board repair of same thickness, make steel slab surface smooth.
(15), hot pressing
The glued board slab of fixing is sent into hot press, put a slab between per two heating platens, successively put, require to be placed on the centre position.
The temperature of hot pressing is 105 degree--125 degree.
The pressure of hot pressing is every square centimeter and is 1-1.2MPa
The time of hot pressing was: by every millimeter of thickness 1 minute.
Begin release when reaching hot pressing time, use three sections destressing methods, promptly being discharged to 10% stop from maximal pressure was the first steam discharge stage in 2-5 minute, be discharged to 2% from 10% and stopped 2-5 minute, and be the second steam discharge stage, pressing plate opens and is the phase III.
(16), repair plate
With the plywood after the hot pressing just, temperature makes a good job of apertured position in the time of 80-100 degree centigrade with greasy the putting down of putty.
(17), saw limit
Greasy flat plywood is carried out length, the width saw limit of finished size.
(18), sanding
Plywood behind the saw limit is carried out thick surely sanding, and the sanding precision is thin light, and promptly smoothly not having tangible score, abrasive band granularity is one in one 80 order of 40 orders.
(19), sorting
The plywood that posts the surface is carried out sorting, and the buttress that grades is put.
(20) packaging and warehousing
The finished product veneered plywood template of having divided grade packed tightly with strap pack the back warehouse-in and grade and deposit.
A kind of single spreading glued board of the present invention plain form production method, production technology is:
(1), log is sawed-off:
The length of log according to the net scale modest ability of glued board and wide, is added that allowance is sawn into juggle.
(2), juggle poach:
Juggle is put into the pond soak or heat, make timber increase moisture content, softening wood-fibred is so that rotary-cut.The poach of whether heating is to determine technological parameter according to seeds, and a general soft seeds water logging gets final product.The time that hard more seeds need be heated more is long, the temperature height.Temperature during general juggle rotary-cut gets final product at 10-70 degree centigrade.
(3), juggle peeling:
When being removed, the bark of juggle, is convenient to rotary-cut also but except silt particle.
(4), juggle rotary-cut:
The juggle of peeling is installed on the peeler by between the preset thickness 0.5-2.5 millimeter.Be peeled into veneer.
(5), veneer is sheared:
The veneer that rotary-cut is good adds that by the dead size of finished product glued board drying shrinkage surplus 6-12% adds saw limit surplus 30-50 millimeter, and it is stand-by to cut into the specification veneer, whole inadequately can be cut into the splicing striped veneer.
(6), veneer drying:
With shearing good veneer and fritter veneer with natural drying or send into drying machine and carry out drying, make the absolute drift of veneer reach 6-10%.
(7), veneer is displayed:
The laminated veneer lumber that drying is good is displayed, and its smooth evenly preparing against with moisture content is used, and the time of displaying is 12-24 hour.
(8), veneer arrangement:
The defective part place under repair of the veneer that drying is good is mended by replacing a damaged part, splicing etc., and dash board and central layer grade standby respectively.
(9), impregnation:
Glue is put into glue mixer add filler again, as flour, plant shell powder etc. are with glue furnishing pasty state.The addition of filler is that the 20-40% of glue weight adds curing agent again, is as the criterion with the process conditions that are fit to precompressed and hot pressing.
(10), veneer gluing:
The glue that mixes up is put into three roller single spreading machines, start glue spreader ready veneer is carried out single spreading, glue-spread is every square metre of 140-160 gram.
(11), display:
Veneer behind the single spreading is carried out opening display, glue faces up, and contacts with air according to the room temperature height, makes the evaporations such as moisture content in the glue, and assembly time is 30-60 minute.
(12), assembly
The blanket glued veneer of displaying is carried out assembly successively, one of gluing faces up, the texture of adjacent layer becomes an angle of 90 degrees, mutually vertical, if it is during even level, that the two-layer composition grain direction at center is consistent, prevent the finished product distortion, uppermost one deck does not carry out gluing, with the relatively large superficial layer of doing of edging, on the glue face that one deck is coated with before directly being swinging into.The book size of assembly is that the dead size of production board adds length, wide each saw limit surplus of 60 millimeters.
(13), precompressed
The glued board slab that assembly is good is sent into preformer, and unit pressure is every square centimeter of 1MPa, and precompressed 30-60 minute, make its one-step forming just, the whole preliminary bonding base that do not loose is advisable.
(14), repair plate
The slab of moulding is carried out surfacing, the removal of lamination is arranged, apertured with on the single board repair of same thickness, make steel slab surface smooth.
(15), hot pressing
The glued board slab of fixing is sent into hot press, put a slab between per two heating platens, successively put, require to be placed on the centre position.
The temperature of hot pressing is 105 degree--125 degree.
The pressure of hot pressing is every square centimeter and is 1-1.2MPa
The time of hot pressing was: by every millimeter of thickness 1 minute.
Begin release when reaching hot pressing time, use three sections destressing methods, promptly being discharged to 10% stop from maximal pressure was the first steam discharge stage in 2-5 minute, be discharged to 2% from 10% and stopped 2-5 minute, and be the second steam discharge stage, pressing plate opens and is the phase III.
(16), repair plate
With the plywood after the hot pressing just, temperature makes a good job of apertured position in the time of 80-100 degree centigrade with greasy the putting down of putty.
(17), saw limit
Greasy flat plywood is carried out length, the width saw limit of finished size.
(18), sanding
Plywood behind the saw limit is carried out thick surely sanding, and the sanding precision is thin light, and promptly smoothly not having tangible score, abrasive band granularity is one in one 80 order of 40 orders.
(19), veneer
With the paper of impregnating resin, be placed on two surfaces of glued board after the sanding, put into the hot press that has stainless steel mirror board, hot pressing.The temperature of hot pressing is the 120-130 degree, and hot pressing pressure is every square centimeter of 1.0-1.2MPa, and the time of hot pressing was generally 10-30 minute according to the performance of soaking the paper resin.
(20), sorting
The plywood that posts the surface is carried out sorting, and the buttress that grades is put.
(21) packaging and warehousing
The finished product veneered plywood template of having divided grade packed tightly with strap pack the back warehouse-in and grade and deposit.
Description of drawings
Fig. 1 is glued board plain form technological process of production figure of the present invention;
The specific embodiment:
Technology characteristics of the present invention be with each layer veneer of glued board all single face be coated with gluing, shape size to veneer is all unqualified, when assembly, can overlap each other, make between each piece veneer and the adjacent veneer and can both glue together, improved the bonding strength of plate, utilize discarded fritter veneer to make originally, be reduced to 1.5 cubic metres of logs of diameter and produce 1 cubic metre of plywood form, improved timber utilization rate 56% greatly.
Water-fast durable for the smooth surface that makes template, the present invention pastes one deck Tetefol mould on the base material of veneer gluing glued board, make it reach smooth durable.
Single spreading technology has following advantage:
The double spread explained hereafter glued board of system has odd-level principle and symmetrical layers principle.And the single spreading production technology, because veneer gluing layer by layer, the number of plies of veneer can be that odd number also can be an even number during assembly.
Traditional double spread technology is to the quality requirement length unanimity of veneer, and limit portion is straight, otherwise misalignment is put not tight.And single spreading technology allows to overlap the length that does not require veneer and flat side, assembly at random when assembly.The fritter veneer also can use, and has significantly improved timber utilization rate, has also significantly reduced the cost of product simultaneously.
Traditional dual-layer adhesive machine generally is two rollers up and down, it below the roller trough of storing glue, the glue of top rubber roll is to transmit by the glue on the lower rubber roller, so, when the veneer gluing, blocked transmission, the glue of gluing roller strap is equivalent to the girth of self the most for a long time, when the veneer length that is gummed has surpassed the girth of glue spreader, can produce and do not have the glue sky to be coated with.And there is not such problem in the single spreading machine, and it is finished by three roller glue spreaders, and glue-line is to be finished jointly by glue spreader and limit rubber roll, and is very even.
The specification requirement of each procedure of the embodiment of the invention is as follows:
1, log is sawed-off:
The length of log according to the net scale modest ability of glued board and wide, is added allowance, and rotary-cut edging 30-60 millimeter is sawn into juggle.
For example glued board breadth dead size is: take advantage of 2440 millimeters for 1220 millimeters, juggle should be sawn into: 1220 millimeters+(30-60 millimeter), 2440 millimeters+(30-60 millimeter).
Annotate: the 30-60 millimeter is to determine according to the diameter of log, the general big log of diameter, the also corresponding increasing of allowance.
2, juggle poach:
Juggle is put into the pond soak or heat, make timber increase moisture content, softening wood-fibred is so that rotary-cut.The poach of whether heating is to determine technological parameter according to seeds, and a general soft seeds water logging gets final product.The time that hard more seeds need be heated more is long, the temperature height.Temperature during general juggle rotary-cut gets final product at 10-70 degree centigrade.
3, juggle peeling:
Do not fill in cutter during for rotary-cut, do not hinder cutter, but except silt particle, be convenient to rotary-cut when the bark of juggle is removed yet.
4, juggle rotary-cut:
The juggle of peeling is installed on the peeler by between the preset thickness 0.5-2.5 millimeter.Be peeled into veneer.
5, veneer is sheared:
The veneer that rotary-cut is good adds that by the dead size of finished product glued board drying shrinkage surplus 6-12% adds saw limit surplus 30-50 millimeter, and it is stand-by to cut into the specification veneer, whole inadequately can be cut into the splicing striped veneer.
6, veneer drying:
With shearing good veneer and fritter veneer with natural drying or send into drying machine and carry out drying, make the absolute drift of veneer reach 6-10%.
7, veneer is displayed:
The laminated veneer lumber that drying is good is displayed, and its smooth evenly preparing against with moisture content is used, and the time of displaying is 12-24 hour.
8, veneer arrangement:
The defective part place under repair of the veneer that drying is good is mended by replacing a damaged part, splicing etc., and dash board and central layer grade standby respectively.
9, impregnation:
Glue is put into glue mixer add filler again, as flour, plant shell powder etc. are with glue furnishing pasty state.The addition of filler is that the 20-40% of glue weight adds an amount of curing agent again, is as the criterion with the process conditions that are fit to precompressed and hot pressing.
10, veneer gluing:
The glue that mixes up is put into three roller single spreading machines, start glue spreader ready veneer is carried out single spreading, glue-spread is every square metre of 140-160 gram.
11, display:
Veneer behind the single spreading is carried out opening display, (glue faces up and contacts with air according to the room temperature height) makes the evaporations such as moisture content in the glue, bulge when preventing hot pressing, and it is too high to put bubble and finished product moisture content.Assembly time is 30-60 minute.
12, assembly
The blanket glued veneer of displaying is carried out assembly successively, one of gluing faces up, the texture of adjacent layer (one-tenth an angle of 90 degrees) is vertical mutually, if during even level, (can make central core and adjacent layer symmetrical like this with the two-layer composition grain direction at center is consistent, prevent that finished product distortion, uppermost one deck from not carrying out gluing (with the relatively large superficial layer of doing of edging) and directly being swinging on the glue face that preceding one deck is coated with.The book size of assembly is that the dead size of production board adds length, wide each saw limit surplus of 60 millimeters.
13, precompressed
The glued board slab that assembly is good is sent into preformer, and unit pressure is every square centimeter of 1MPa, and precompressed 30-60 minute, make its one-step forming just, the whole preliminary bonding base that do not loose is advisable.
14, repair plate
The slab of moulding is carried out surfacing, the removal of lamination is arranged, apertured with on the single board repair of same thickness, make steel slab surface smooth.
15, hot pressing
The glued board slab of fixing is sent into hot press, put a slab between per two heating platens, successively put, require to be placed on the centre position.
The temperature of hot pressing is 105 degree--125 degree.
The pressure of hot pressing is every square centimeter and is 1-1.2MPa
The time of hot pressing was: by every millimeter of thickness 1 minute.
When reaching hot pressing time, begin release, during release in order to prevent that full expansion of closing steam from making glued board put bubble, need to use three sections destressing methods, promptly being discharged to 10% stop from maximal pressure was the first steam discharge stage in 2-5 minute, being discharged to 2% from 10% stopped 2-5 minute, be the second steam discharge stage, pressing plate opens and is the phase III.
16, repair plate
With the plywood after the hot pressing just, temperature makes a good job of apertured position in the time of 80-100 degree centigrade with greasy the putting down of putty.
17, saw limit
Greasy flat plywood is carried out length, the width of finished size and saw the limit, the adjacent side of sawing out becomes an angle of 90 degrees, and its diagonal difference is less than 3 millimeters.
18, sanding
Plywood behind the saw limit is carried out thick surely sanding, and the sanding precision is that thin light (promptly smoothly not having tangible score) abrasive band granularity is one in one 80 order of 40 orders.
19, veneer
With the paper of impregnating resin, be placed on two surfaces of glued board after the sanding, put into the hot press that has stainless steel mirror board, hot pressing.The temperature of hot pressing is the 120-130 degree, and hot pressing pressure is every square centimeter of 1.0-1.2MPA, and the time of hot pressing was generally 10-30 minute according to the performance of soaking the paper resin.
20, sorting
The plywood that posts the surface is carried out sorting, and the buttress that grades is put.
21 packaging and warehousing
To divide the finished product veneered plywood template of grade to pack tightly with strap, it be a packing that 50-100 opens, and packing back warehouse-in grades and deposits.
Claims (2)
1. single spreading glued board producing method, production technology is:
(1), log is sawed-off:
The length of log according to the net scale modest ability of glued board and wide, is added that allowance is sawn into juggle;
(2), juggle poach:
Juggle is put into the pond soak or heat, the poach of whether heating is to determine technological parameter according to seeds, and the water logging of soft seeds gets final product, and the time that hard more seeds need be heated more is long, the temperature height, and the temperature during the juggle rotary-cut is at 10-70 degree centigrade;
(3), juggle peeling:
The bark of juggle is removed;
(4), juggle rotary-cut:
The juggle of peeling is installed on the peeler by between the preset thickness 0.5-2.5 millimeter, is peeled into veneer;
(5), veneer is sheared:
The veneer that rotary-cut is good adds that by the dead size of finished product glued board drying shrinkage surplus 6-12% adds saw limit surplus 30-50 millimeter, and it is stand-by to cut into the specification veneer, whole inadequately be cut into the splicing striped veneer;
(6), veneer drying:
With shearing good veneer and fritter veneer with natural drying or send into drying machine and carry out drying, make the absolute drift of veneer reach 6-10%;
(7), veneer is displayed:
The laminated veneer lumber that drying is good is displayed, and the time of displaying is 12-24 hour;
(8), veneer arrangement:
The defective part place under repair of the veneer that drying is good, mend by replacing a damaged part, splice, dash board and central layer grade standby respectively;
(9), impregnation:
Glue is put into glue mixer add filler again, with glue furnishing pasty state, the addition of filler is that the 20-40% of glue weight adds curing agent again, is as the criterion with the process conditions that are fit to precompressed and hot pressing;
(10), veneer gluing:
The glue that mixes up is put into three roller single spreading machines, start glue spreader ready veneer is carried out single spreading, glue-spread is every square metre of 140-160 gram;
(11), display:
Veneer behind the single spreading is carried out opening display, glue faces up, and contacts with air according to the room temperature height, and assembly time is 30-60 minute;
(12), assembly
The blanket glued veneer of displaying is carried out assembly successively, one of gluing faces up, the texture of adjacent layer becomes an angle of 90 degrees, mutually vertical, if it is during even level, that the two-layer composition grain direction at center is consistent, uppermost one deck does not carry out gluing, with the relatively large superficial layer of doing of edging, on the glue face that one deck is coated with before directly being swinging into, the book size of assembly is that the dead size of production board adds each saw limit surplus of 60 millimeters of length and width;
(13), precompressed
The glued board slab that assembly is good is sent into preformer, and unit pressure is every square centimeter of 1MPa, precompressed 30-60 minute;
(14), repair plate
The slab of moulding is carried out surfacing, the removal of lamination is arranged, apertured with on the single board repair of same thickness, make steel slab surface smooth;
(15), hot pressing
The glued board slab of fixing is sent into hot press, puts a slab between per two heating platens, successively put, require to be placed on the centre position:
The temperature of hot pressing is 105 degree--125 degree,
It is 1-1.2MPa that the pressure of hot pressing is every square centimeter,
The time of hot pressing is: by every millimeter of thickness 1 minute,
Begin release when reaching hot pressing time, use three sections destressing methods, promptly being discharged to 10% stop from maximal pressure was the first steam discharge stage in 2-5 minute, be discharged to 2% from 10% and stopped 2-5 minute, and be the second steam discharge stage, pressing plate opens and is the phase III;
(16), repair plate
With the plywood after the hot pressing just, temperature makes a good job of apertured position in the time of 80-100 degree centigrade with greasy the putting down of putty;
(17), saw limit
Greasy flat plywood is carried out length, the width saw limit of finished size;
(18), sanding
Plywood behind the saw limit is carried out thick surely sanding, and the sanding precision is thin light, and promptly smoothly not having tangible score, abrasive band granularity is one in one 80 order of 40 orders;
(19), sorting
The plywood that posts the surface is carried out sorting, and the buttress that grades is put;
(20) packaging and warehousing
The finished product veneered plywood template of having divided grade packed tightly with strap pack the back warehouse-in and grade and deposit.
2. single spreading glued board plain form production method, production technology is:
(1), log is sawed-off:
The length of log according to the net scale modest ability of glued board and wide, is added that allowance is sawn into juggle;
(2), juggle poach:
Juggle is put into the pond soak or heat, the poach of whether heating is to determine technological parameter according to seeds, and the water logging of soft seeds gets final product, and the time that hard more seeds need be heated more is long, temperature is high, and the temperature during the juggle rotary-cut is at 10-70 degree centigrade;
(3), juggle peeling:
The bark of juggle is removed;
(4), juggle rotary-cut:
The juggle of peeling is installed on the peeler by between the preset thickness 0.5-2.5 millimeter, is peeled into veneer;
(5), veneer is sheared:
The veneer that rotary-cut is good adds that by the dead size of finished product glued board drying shrinkage surplus 6-12% adds saw limit surplus 30-50 millimeter, and it is stand-by to cut into the specification veneer, whole inadequately be cut into the splicing striped veneer;
(6), veneer drying:
With shearing good veneer and fritter veneer with natural drying or send into drying machine and carry out drying, make the absolute drift of veneer reach 6-10%.
(7), veneer is displayed:
The laminated veneer lumber that drying is good is displayed, and the time of displaying is 12-24 hour;
(8), veneer arrangement:
The defective part place under repair of the veneer that drying is good, mend by replacing a damaged part, splice, dash board and central layer grade standby respectively;
(9), impregnation:
Glue is put into glue mixer add filler again, with glue furnishing pasty state, the addition of filler is that the 20-40% of glue weight adds curing agent again, is as the criterion with the process conditions that are fit to precompressed and hot pressing;
(10), veneer gluing:
The glue that mixes up is put into three roller single spreading machines, start glue spreader ready veneer is carried out single spreading, glue-spread is every square metre of 140-160 gram;
(11), display:
Veneer behind the single spreading is carried out opening display, glue faces up, and contacts with air according to the room temperature height, and assembly time is 30-60 minute;
(12), assembly
The blanket glued veneer of displaying is carried out assembly successively, one of gluing faces up, the texture of adjacent layer becomes an angle of 90 degrees, mutually vertical, if it is during even level, that the two-layer composition grain direction at center is consistent, uppermost one deck does not carry out gluing, with the relatively large superficial layer of doing of edging, on the glue face that one deck is coated with before directly being swinging into, the book size of assembly is that the dead size of production board adds each saw limit surplus of 60 millimeters of length and width;
(13), precompressed
The glued board slab that assembly is good is sent into preformer, and unit pressure is every square centimeter of 1MPa, precompressed 30-60 minute;
(14), repair plate
The slab of moulding is carried out surfacing, the removal of lamination is arranged, apertured with on the single board repair of same thickness;
(15), hot pressing
The glued board slab of fixing is sent into hot press, puts a slab between per two heating platens, successively put, require to be placed on the centre position:
The temperature of hot pressing is 105 degree--125 degree,
It is 1-1.2MPa that the pressure of hot pressing is every square centimeter,
The time of hot pressing is: by every millimeter of thickness 1 minute,
Begin release when reaching hot pressing time, use three sections destressing methods, promptly being discharged to 10% stop from maximal pressure was the first steam discharge stage in 2-5 minute, be discharged to 2% from 10% and stopped 2-5 minute, and be the second steam discharge stage, pressing plate opens and is the phase III;
(16), repair plate
With the plywood after the hot pressing just, temperature makes a good job of apertured position in the time of 80-100 degree centigrade with greasy the putting down of putty;
(17), saw limit
Greasy flat plywood is carried out length, the width saw limit of finished size;
(18), sanding
Plywood behind the saw limit is carried out thick surely sanding, and the sanding precision is thin light, and promptly smoothly not having tangible score, abrasive band granularity is one in one 80 order of 40 orders;
(19), veneer
With the paper of impregnating resin, be placed on two surfaces of glued board after the sanding, put into the hot press that has stainless steel mirror board, hot pressing, the temperature of hot pressing is the 120-130 degree, and hot pressing pressure is every square centimeter of 1.0-1.2MPa, and the time of hot pressing is 10-30 minute according to the performance of soaking the paper resin;
(20), sorting
The plywood that posts the surface is carried out sorting, and the buttress that grades is put;
(21) packaging and warehousing
The finished product veneered plywood template of having divided grade packed tightly with strap pack the back warehouse-in and grade and deposit.
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| CNB2005100104800A CN100395090C (en) | 2005-10-26 | 2005-10-26 | Method for producing plywood with glueing on one side and plywood mould |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100104800A CN100395090C (en) | 2005-10-26 | 2005-10-26 | Method for producing plywood with glueing on one side and plywood mould |
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| Publication Number | Publication Date |
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| CN1792578A CN1792578A (en) | 2006-06-28 |
| CN100395090C true CN100395090C (en) | 2008-06-18 |
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| CNB2005100104800A Expired - Fee Related CN100395090C (en) | 2005-10-26 | 2005-10-26 | Method for producing plywood with glueing on one side and plywood mould |
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