CN107503223A - The preparation technology and its production equipment of multilayer glass fiber cotton - Google Patents
The preparation technology and its production equipment of multilayer glass fiber cotton Download PDFInfo
- Publication number
- CN107503223A CN107503223A CN201710710957.9A CN201710710957A CN107503223A CN 107503223 A CN107503223 A CN 107503223A CN 201710710957 A CN201710710957 A CN 201710710957A CN 107503223 A CN107503223 A CN 107503223A
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- China
- Prior art keywords
- cotton
- glass fiber
- multilayer glass
- preparation technology
- stove
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
Abstract
The present invention relates to Deep Cold-Heat Insulation Technology field, more particularly to a kind of preparation technology and its production equipment of multilayer glass fiber cotton, its preparation process to include：Raw materials melt, wire drawing wire drawing, point fire-fighting cotton, collection cotton and glue spraying, shaping, drying, wrapup procedure, implement the melting of progress raw material in stove, after wire drawing wire drawing and point fire-fighting cotton, carry out collecting cotton and glue spraying operation in cotton collecting machine, shaping drying is finally carried out in baking oven, finally implement winding, obtain high thickness ultra-fine multilayer glass fiber cotton.The high thickness ultra-fine multilayer glass fiber cotton thickness is 20-30mm, water content ＜ 0.5%, grammes per square metre 360-440g/m2, the temperature range that can be applied is subzero 268 DEG C to 232 DEG C above freezing.As can be seen that the preparation technology flow of multilayer glass fiber cotton provided by the invention is reasonable, new technology, the high thickness ultra-fine multilayer glass fiber cotton thickness height of production, material are loose, can be played a great role applied to cryogenic insulating domain variability.
Description
Technical field
The present invention relates to Deep Cold-Heat Insulation Technology field, preparation technology and its production more particularly, to a kind of multilayer glass fiber cotton
Equipment.
Background technology
Glass fibre tensile strength is very big, can reach 6.9g/d in normal conditions, can also in the case of moistening
Reach 5.8g/d, so excellent property so that glass fibre can often be used as reinforcing material generally to use.Its density
For 2.54.Glass fibre is also very heat-resisting, and at 300 DEG C, it is still able to keep normal property.Glass fibre may be used also sometimes
To be widely used as heat-insulating material and shielding material, this is all attributed to the fact that its electrical insulating property, and can not be corroded easily.
Glass fibre cotton is a kind of inorganic non-metallic material of excellent performance, and species is various, good insulating, heat resistance be strong,
Corrosion resistance is good, high mechanical strength.High thickness ultra-fine multilayer glass fiber cotton is mainly used in cryogenic insulating field, it is desirable to and thickness is high, and
It is loose, at present without the equipment and technique for specially producing such product.
The information for being disclosed in the background section is merely intended to deepen the understanding of the general background technology to the present invention, and
It is not construed as recognizing or implies information structure prior art known to those skilled in the art in any form.
The content of the invention
It is an object of the invention to provide a kind of preparation technology and its production equipment of multilayer glass fiber cotton, solves existing skill
The technical problem that technological gap be present for the high thickness ultra-fine multilayer glass fiber cotton in cryogenic insulating field is produced in art.
On the one hand, the present invention provides a kind of preparation technology of multilayer glass fiber cotton, including：
S1. frit is added into stove, frit is melted to glass fiber and is flowed naturally out of described stove
Go out；
S2. imported after glass fiber flow velocity is uniform in wire drawing roller；Order according to silk layer on bushing will be drawn with wire drawing color
Glass fiber in silk roller is allocated in forming glass fibre cotton on sub-wire threaded rod uniform sequentially；
S3. open the spray cotton burner in spray cotton pipe and control its running parameter, to the glass on the sub-wire threaded rod
Cellucotton is carried out spraying cotton operation, and glass fibre cotton then is transported into cotton collecting machine；
S4. start cotton collecting machine, the glass fibre cotton after cotton operates will be sprayed and be adsorbed on forming net；Treat that glass fibre cotton is complete
After covering the forming net, start glue spraying, by the uniform spray attachment of glue in glass fibre cotton；
S5. after forming net collection pressure, the multilayer glass fiber cotton of shaping is formed, the multilayer glass fiber cotton after shaping is dried and received
Volume.
As further technical scheme, increase natural gas into stove in S1, step up temperature in stove and
The length of pressure and flame.
As further technical scheme, during raising stove kiln temperature, the temperature in stove is checked, directly
Temperature in stove reaches 760-850 DEG C.
As further technical scheme, need to be manually pulled out stove leakage before glass fiber is imported into wire drawing roller in S2
Glass fiber under plate is checked, it is desirable to glass fiber even thickness, no leakage silk, fracture of wire phenomenon.
As further technical scheme, the flame temperature of the spray cotton burner in S3 is 760-850 DEG C.
As further technical scheme, the forming net in S4 includes the first forming net and the second forming net, described
First forming net and second forming net are setting up and down for forming fibre glass chopped stand mat, and the first end of first forming net
" V " type is formed with the first end of second forming net.
As further technical scheme, the multilayer glass fiber cotton after being molded in S5, which is sent into baking oven, is toasted；After drying
Multilayer glass fiber cotton wind on paper tube, it is left back to block winding.
As further technical scheme, the oven for drying temperature is 150 DEG C, and the paper tube diameter is 381mm.
As further technical scheme, the thickness of the multilayer glass fiber cotton is 20-30mm, water content ＜ 0.5%, gram
Weight is 360-440g/m2。
On the other hand, the present invention provide it is a kind of be used for implement as above-mentioned technical scheme offer it is any as described in layer glass
The production equipment of the preparation technology of fiber cotton, including stove, spray cotton pipe, cotton collecting machine and the baking oven set gradually；The stove
Bottom is disposed with bushing, wire drawing roller and sub-wire threaded rod, and the sub-wire threaded rod connects with the spray cotton pipe, described
Spray cotton burner is provided with spray cotton pipe；The spray cotton pipe is connected with the cotton collecting machine, and shaping is provided with the cotton collecting machine
Net and glue-spraying device；The cotton collecting machine connects with the baking oven.
The preparation technology and its production equipment of a kind of multilayer glass fiber cotton provided by the invention can reach following beneficial effect：
The step S1 for implementing preparation technology in stove carries out the melting of raw material, the igniting of wire drawing wire drawing and S3 by S2
After spraying cotton, step S4 collection cotton and glue spraying operation are carried out in cotton collecting machine, step S5 shaping drying is finally carried out in baking oven
Winding, obtains high thickness ultra-fine multilayer glass fiber cotton.The high thickness ultra-fine multilayer glass fiber cotton thickness is 20-30mm, water content ＜
0.5%, grammes per square metre 360-440g/m2, the temperature range that can be applied is subzero 268 to 232 DEG C above freezing.As can be seen that this hair
The preparation technology flow of the multilayer glass fiber cotton of bright offer is reasonable, new technology, the high thickness ultra-fine multilayer glass fiber cotton thickness of production
Height, material are loose, can be played a great role applied to cryogenic insulating domain variability.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the preparation technology of multilayer glass fiber cotton provided in an embodiment of the present invention；
Fig. 2 is the flow chart of the preparation technology of another multilayer glass fiber cotton provided in an embodiment of the present invention.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Deep cooling is exactly the temperature of lower less than 100 DEG C of nulling, can industrially be divided into the gas liquefaction technology of chemical industry,
And the subzero treatment of materials industry.High thickness ultra-fine multilayer glass fiber cotton can play premium properties in deep cooling Material Field.But
It is the technological process for being used to produce the high thickness ultra-fine multilayer glass fiber cotton for not having maturation also at present.
On this basis, reference picture 1-2, the present invention propose a kind of preparation technology of multilayer glass fiber cotton, for preparing high thickness
Ultra-fine multilayer glass fiber cotton is spent, its preparation process includes：
S1. frit is added into stove, frit is melted to glass fiber and is flowed out naturally out of stove；
S2. imported after glass fiber flow velocity is uniform in wire drawing roller；Order according to silk layer on bushing will be drawn with wire drawing color
Glass fiber in silk roller is allocated in forming glass fibre cotton on sub-wire threaded rod uniform sequentially；
S3. open the spray cotton burner in spray cotton pipe and control its running parameter, to the glass fibre on sub-wire threaded rod
Cotton is carried out spraying cotton operation, and glass fibre cotton then is transported into cotton collecting machine；
S4. start cotton collecting machine, the glass fibre cotton after cotton operates will be sprayed and be adsorbed on forming net；Treat that glass fibre cotton is complete
After covering forming net, start glue spraying, by the uniform spray attachment of glue in glass fibre cotton；
S5. after forming net collection pressure, the multilayer glass fiber cotton of shaping is formed, the multilayer glass fiber cotton after shaping is dried and received
Volume.
Wherein, frit mainly includes block glass, except the glass of bulk, for the complete of reaction and effect
Fruit, some auxiliary materials, such as fining agent, sulfate, halide, compound clarifier etc. can also be increased.
The block glass of addition is to being melted in the burner hearth of stove, in case subsequent production needs.Glass mentioned here
Melting refer to the process of batch at high temperature by silicate reaction, melting be then converted into homogeneous glass liquid.
Implement raw materials melt operation in the S1 stages, it is necessary to which the moment is observed after both bulk glasses are put into the burner hearth of stove
Vitreousness in burner hearth.In the process, the natural gas in stove is gradually increased and decreased, to step up the temperature and pressure in burner hearth
Power, and improve the length of flame.
The melting of frit is set to temperature range, it is necessary to reach one, needs to reach 760-850 DEG C in the present embodiment
Temperature range.In order to accurately control the temperature in burner hearth, raise in burner hearth during temperature, staff needs to grasp at any time
Temperature in burner hearth, and adjustment is controlled according to the temperature moment actual in burner hearth.
Specifically, the real time temperature in burner hearth is detected, the temperature data that the data after detection and needs are reached
Be compared, if the temperature that the temperature in burner hearth is also not up to required, continue to increase natural gas, improve temperature in burner hearth and
Pressure, and the length of flame is improved, and so on, a circulation feedback is formed, until the temperature in burner hearth reaches 760-850
DEG C such a scope.
In addition, staff also needs to observe the molten condition of frit in stove constantly, and according to base glass
Molten condition adjusts the temperature in burner hearth.The base glass mentioned here molten condition to be reached refers to glass fiber energy
Enough realize that nature flows out.
It should be noted that in the preparation technology S1 for the multilayer glass fiber cotton that the embodiment of the present invention is provided, in burner hearth
Temperature detection and molten condition to base glass are to carry out simultaneously, be complementary, that is to say, that when the raw material glass in burner hearth
When glass reaches required molten condition, the temperature in burner hearth reaches within the scope of 760-850 DEG C.
Wherein, the temperature detection in burner hearth can use intelligent control.Specifically, TEMP is provided with burner hearth
Device, the temperature sensor can be used at least 850 DEG C of hot environment.And the Gas Exploitation of stove is controlled with controller, the control
Device processed is connected with said temperature sensor signal.The controller is preset with threshold temperature, and the threshold temperature reaches required for being
Temperature or temperature range, for being contrasted with the real time temperature in burner hearth, and according to comparing result to the defeated of natural gas
The corresponding action of row is sent into accuse.Temperature sensor can detect the temperature in burner hearth and temperature information is sent into controller,
After the controller receives the temperature information in burner hearth, threshold temperature contrast default with controller, if the real-time temperature in burner hearth
Degree continues to increase, to improve the temperature and pressure in burner hearth, and improved less than the threshold temperature set, controller control natural gas
The length of flame；If the real time temperature in burner hearth reaches default threshold temperature, controller accordingly controls the conveying speed of natural gas
Degree or size, so that the temperature in burner hearth is maintained within the scope of required 760-850 DEG C.
The glass fiber for needing to be manually pulled out under bushing before implementation steps S2 wire drawing wire drawing operation is checked, it is desirable to
Glass fiber even thickness, no leakage silk, fracture of wire phenomenon.
The glass metal melted entered after further clarification homogenizing and temperature conditioning is carried out from after the outflow of stove melting end
Path is crossed, then enters bushing through fluid groove.Bushing bottom, which is typically gathered some, lets slip a remark.Bushing is main in glass fibre production
One of device, it is shaped as a trough-shaped container.The wire drawing machine of melten glass is stretched as continuous glass fibre during drawing.With
Bushing modulates the temperature of glass metal self by current heating and maintains sufficiently uniform Temperature Distribution to meet to draw during upper
Silk process requirements.
The glass metal of high temperature viscometrics in drop-wise from let slip a remark outflow after by following wire drawing machine with certain constant speed drawing-off
And it is solidified into the continuous glass fibre of certain diameter.
In the preparation technology for the multilayer glass fiber cotton that the present embodiment is provided, wire drawing wire drawing operation is being carried out to superfine glass fiber cotton
Before, the glass fiber that be first manually pulled out under bushing checked, observation detection glass fiber whether even thickness, and check glass
Whether glass silk has the phenomenon of leakage silk or fracture of wire.
When checking the wire drawing situation of glass fiber, if the wire drawing situation of glass fiber is undesirable, it is impossible to carry out in next step,
Need to continue wire drawing, but do not collect, until the glass fiber pulled out reaches above-mentioned requirements, start the operation of wire drawing wire drawing.
It should be noted that in wire drawing stages, infiltration apparatus is preferably also provided with, for the glass in wire drawing state
Glass silk table face coating high temperature viscometrics glass metal in drop-wise from let slip a remark outflow after by following wire drawing machine with certain constant speed
Drawing-off and the continuous glass fibre for being solidified into certain diameter.
When the glass fiber of pull-out reaches even thickness, after no requirement for leaking silk, fracture of wire, step S3 is to glass fibre cotton for progress
Point fire-fighting cotton operation, i.e., after glass fiber flow velocity is uniform import wire drawing roller in；With wire drawing color by the glass in wire drawing roller
Silk is allocated on sub-wire threaded rod uniform sequentially according to the order of bushing silk layer.
Wherein, wire drawing color is a kind of dedicated for allocating glass fiber to the auxiliary member of sub-wire threaded rod.Specifically, wire drawing color
Shape do not limit, as long as the function of allocating glass fiber on sub-wire threaded rod can be realized.
After the completion of glass fiber to be allocated to the technique on sub-wire threaded rod, step S3 is come into effect, is opened in spray cotton pipe
Spray cotton burner and control its running parameter, to the glass fibre cotton on sub-wire threaded rod carry out spray cotton operation, then by glass
Cellucotton is transported to cotton collecting machine.
Here the size of natural gas transportation amount and the control of air force are included to the operating parameter control for spraying cotton burner.
Step S4 collection cotton and glue spraying operation is carried out after point fire-fighting cotton.Detailed process is to start cotton collecting machine, S3 is obtained
Glass fibre cotton is adsorbed on forming net；After forming net is completely covered in glass fibre cotton, starts glue spraying, glue is uniformly sprayed
Invest in glass fibre cotton.
It should be noted that herein, the flame temperature of spray cotton burner is preferably 760-850 DEG C.
Wherein, forming net includes the first forming net and the second forming net, and the first forming net and the second forming net are setting up and down
For forming fibre glass chopped stand mat, and the first end of the first forming net and the first end of the second forming net form " V " type.
Herein, the second end of the first end of the first forming net and the second forming net be close to glass fibre cotton come to one
End, i.e., when glass fibre cotton is delivered to cotton collecting machine, the one end contacted at first with glass fibre cotton.
After cotton collecting machine completes collection cotton operation, start glue spraying equipment, adhesive glue is sprayed on fluffy glass fibre cotton, by
There is certain pressure when in spray, so adhesive glue can be also penetrated into the inside of glass fibre cotton fluff structure, sprinkling bonding
Glass fibre cotton after glue makes interfibrous interface point fiber that is glued, and not being bonded to each other again by drying, solidification,
Still there is sizable free degree.Meanwhile in tridimensional network, still remain with many spaces for having air.Therefore, glass
Cellucotton has porous, the thermal effect of high fluffy.
Glass fibre cotton after overmolding glue spraying proceeds by step S5 shaping, drying, winding, specifically, passes through
After forming net collection pressure, glass fibre cotton forms the multilayer glass fiber cotton of shaping by reciprocator；The multilayer glass fiber cotton of shaping is drawn
Enter in baking oven and toasted.
It should be noted that the drying temperature of baking oven is 150 DEG C, and the temperature needs to preset in advance, preheating time
For 1.5-3h.
Multilayer glass fiber cotton by oven for drying can reach the indexs such as qualified moisture content, grammes per square metre, now to coating glass
Fiber cotton carries out wind-up operation, and the multilayer glass fiber cotton being molded after drying is wound on paper tube, left back to block winding.
Wherein, paper tube diameter 381mm.Also, the indexs such as length, coil diameter per rollback request can be according to the requirement of client
Carry out production setting.
The thickness of multilayer glass fiber cotton prepared by the preparation technology of the multilayer glass fiber cotton provided by above example is
20-30mm, water content ＜ 0.5%, grammes per square metre 360-440g/m2。
The preparation technology flow of multilayer glass fiber cotton provided by the invention is reasonable, new technology, and the high thickness of production is ultra-fine more
Layer glass fiber cotton thickness is high, material is loose, can be played a great role applied to cryogenic insulating domain variability.
The present invention also provides a kind of preparation work for being used for implementation such as any multilayer glass fiber cotton that above-mentioned embodiment is provided
The production equipment of skill, including stove, spray cotton pipe, cotton collecting machine and the baking oven set gradually；The bottom of stove is disposed with Lou
Plate, wire drawing roller and sub-wire threaded rod, sub-wire threaded rod connect with spray cotton pipe, spray and spray cotton burner is provided with cotton pipe；Spray
Cotton pipe is connected with cotton collecting machine, and forming net and glue-spraying device are provided with cotton collecting machine；Cotton collecting machine connects with baking oven.
Wherein, the step S1 for implementing preparation technology in stove carries out the melting of raw material, by S2, wire drawing wire drawing and S3
After point fire-fighting cotton, step S4 collection cotton and glue spraying operation are carried out in cotton collecting machine, step S5 shaping is finally carried out in baking oven
Wound after drying, obtain high thickness ultra-fine multilayer glass fiber cotton.The high thickness ultra-fine multilayer glass fiber cotton thickness is 20-30mm, aqueous
Measure ＜ 0.5%, grammes per square metre 360-440g/m2, the temperature range that can be applied is subzero 268 to 232 DEG C above freezing, can be in depth
Play a great role in cold adiabatic field.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
- A kind of 1. preparation technology of multilayer glass fiber cotton, it is characterised in that including：S1. frit is added into stove, frit is melted to glass fiber and is flowed out naturally out of described stove；S2. imported after glass fiber flow velocity is uniform in wire drawing roller；Order according to silk layer on bushing is rolled wire drawing with wire drawing color Glass fiber in wheel is allocated in forming glass fibre cotton on sub-wire threaded rod uniform sequentially；S3. open the spray cotton burner in spray cotton pipe and control its running parameter, to the glass fibre on the sub-wire threaded rod Cotton is carried out spraying cotton operation, and glass fibre cotton then is transported into cotton collecting machine；S4. start cotton collecting machine, the glass fibre cotton after cotton operates will be sprayed and be adsorbed on forming net；Treat that glass fibre cotton is completely covered After the forming net, start glue spraying, by the uniform spray attachment of glue in glass fibre cotton；S5. after forming net collection pressure, the multilayer glass fiber cotton of shaping is formed, the multilayer glass fiber cotton after shaping is dried into winding.
- 2. the preparation technology of multilayer glass fiber cotton according to claim 1, it is characterised in that increase day into stove in S1 Right gas, step up the length of the temperature and pressure and flame in stove.
- 3. the preparation technology of multilayer glass fiber cotton according to claim 2, it is characterised in that the process of rise stove kiln temperature In, the temperature in stove is checked, until the temperature in stove reaches 760-850 DEG C.
- 4. the preparation technology of multilayer glass fiber cotton according to claim 1, it is characterised in that glass fiber is imported in S2 and drawn The glass fiber for needing to be manually pulled out under stove bushing before silk roller is checked, it is desirable to glass fiber even thickness, no leakage silk, is broken Silk phenomenon.
- 5. the preparation technology of multilayer glass fiber cotton according to claim 1, it is characterised in that the spray cotton burner in S3 Flame temperature is 760-850 DEG C.
- 6. the preparation technology of multilayer glass fiber cotton according to claim 1, it is characterised in that the forming net in S4 includes First forming net and the second forming net, first forming net and second forming net are setting up and down for forming glass fibre Blanket, and the first end of first forming net and the first end of second forming net form " V " type.
- 7. the preparation technology of multilayer glass fiber cotton according to claim 1, it is characterised in that the multilayer glass after being molded in S5 Cotton is sent into baking oven and toasted；Multilayer glass fiber cotton after drying is wound on paper tube, left back to block winding.
- 8. the preparation technology of multilayer glass fiber cotton according to claim 7, it is characterised in that the oven for drying temperature is 150 DEG C, the paper tube diameter is 381mm.
- 9. the preparation technology of the multilayer glass fiber cotton according to any one of claim 1-8, it is characterised in that the multilayer The thickness of glass fiber cotton is 20-30mm, water content ＜ 0.5%, grammes per square metre 360-440g/m2。
- 10. the production of preparation technology for implementing multilayer glass fiber cotton as claimed in any one of claims 1-9 wherein a kind of is set It is standby, it is characterised in that including stove, spray cotton pipe, cotton collecting machine and the baking oven set gradually；The bottom of the stove is set gradually There are bushing, wire drawing roller and sub-wire threaded rod, the sub-wire threaded rod connects with the spray cotton pipe, is set in the spray cotton pipe It is equipped with spray cotton burner；The spray cotton pipe is connected with the cotton collecting machine, and forming net and glue-spraying device are provided with the cotton collecting machine； The cotton collecting machine connects with the baking oven.
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