CN85104458A - Make the method for mineral fiber tilesn by molten material - Google Patents
Make the method for mineral fiber tilesn by molten material Download PDFInfo
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- CN85104458A CN85104458A CN85104458.1A CN85104458A CN85104458A CN 85104458 A CN85104458 A CN 85104458A CN 85104458 A CN85104458 A CN 85104458A CN 85104458 A CN85104458 A CN 85104458A
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Abstract
The invention relates to production of mineral fibre mats.In this technology of being considered, when the material of fusing was worn the foraminous whizzer on by circumferential wall, being ejected from whizzer from these eyelets of whizzer became ultimate fibre.One air-flow that comes out along the whizzer circumference blows ultimate fibre and carries and make its diffusion.The original ringwise gas of this strand flows to the whizzer exit and has formed conical flow substantially.According to the present invention is to come the adding of fiber particulate with one air-flow, and the direction of this strand air-flow is perpendicular with the air motion direction of blowing the fiber that carries new generation, and is to be blown into from blowing the contraction place of carrying fibrous airstream.
Description
The invention relates to production of mineral fibre mats.
The manufacture method of the most widely used industrial mineral fibre felt comprises: the fused material is sprayed from whizzer perforate on every side and the formation fiber, and molten material ejects with ultimate fibre by these eyelets from whizzer.One hot gas flow carries ultimate fibre and makes the ultimate fibre diffusion to blow along the circumferential wall of whizzer at a high speed.
The production method of this fiberboard had had a large amount of achievements to deliver.Up-to-date should mention french patent application NO.2443436 and european patent application NO.0091866.
Supervene the limit portion of a considerable number of byproduct, particularly fiberboard with the production of fiberboard, will fitly cut burr for reaching width dimensions and guaranteeing that edges of boards are straight.In addition, remove the product of all sub-standard requirements from the production line everywhere.The byproduct of all these fibers may account for output 10% or more.As previously mentioned, these byproducts can be discarded, and also can transform to be used.
In the technology of above-mentioned producd fibers, have at least a part of this byproduct in fiber production process, to be mixed again traditionally.For this purpose, byproduct is earlier with milling or the method for ramming reduces to become particulate or little with its size.The fibrous nits that obtains is like this delivered to air-flow in the container of fiber-forming, here mixes with different abundant degree with the fiber that just formed, and mixing is that the fiber collecting in above-mentioned new generation carried out in the past at collector.
Say the production of fiberboard more back.Be necessary to describe in detail the condition that the fiber that leaves whizzer forms a fiberboard after treatment.
A large amount of eyelets is all arranged on the perisporium of each whizzer.The air-flow of being close to whizzer blows the whole fibers that generated that carry and constitutes the thin curtain of a kind of annular, and this thin curtain has the very form of rule, and stretches to the collecting conveyor direction.
Transport unit can see through gas, and it allows gas by keeping fiber here, gas be inhaled into be located at below the transport unit, keep the chest of vacuum in a suitable manner.
Fiber between whizzer and collecting conveyor by the time sprayed a layer binder, bond in the plate that binding agent for good and all in the end forms fiber mutually and solidify.The operation of fiber coating generally includes one thermal treatment so that binding agent is solidified, and thermal treatment is carried out when reticulin fiber is formed plate on collecting conveyor after.
When the desired output of the equipment of industrial product was very high, many whizzers in a row were arranged in same transport unit and help to form plate.
Between the successive whizzer, carry out mixing under the situation of fibrous nits mixing normally of particulate.Between the device of two new fibers of generation, mix fibrous nits, can reach sufficient mixing, so that particulate is diffused in the final made plate equably.
In order to obtain the performance of profiled sheeting, particulate is scatter in plate body.Generally speaking, particularly the resistive properties role is the same with the new fiber that produces even fibrous nits is for fibreboard performance, and the existence of these particulates still can make its performance be improved substantially, for example physical strength and product appearance.
Generally can say so, everyly realize that this improved local product can improve at large.Under any circumstance, this improved degree can be very not big, unless the quantity of particulate surpasses certain limit.If particulate is distributed in the fiberboard equably, just might add a large amount of particulates and danger that certain point does not go beyond the limit in plate body.
Experience shows that traditional method that adds particulate in the mobile fiber does not reach diffusion profile fully uniformly.The trend that particulate has a kind of stratiform to pile up is concentrated on newly-generated corpus fibrosum more or less.
Analysis to the fiberboard composition will show that each whizzer forms the fiber laydown layer of oneself.In this case, particulate can be preferentially attached between these two formed layer of fibers of whizzer from middle the spraying into of two whizzers.
Fiber the transport unit width be distributed in transport unit than broad in (for example width is above 2 meters) also can have problems usually.In order to guarantee fiber full and uniform distribution on whole width, general custom trend towards or increase blow carry fibrous airstream width (for example, has the fibrolaminar effect of broadening from the cross-jet of air-flow), or change the direction (for example, air channel waveringly alternately moves on to the other end from an end of fibre plate transport unit) of air-flow periodically.
The similar mechanism that is used for newborn fiber can be used to make particulate in the wide lateral dispersion of plate.This need roll up the combination of mechanism in relatively limited space.Therefore there is the people to adopt routinely and improves also more uppity method simultaneously inadequately, blow the air-flow that carries particulate as using deflecting plate broadening on the whole width of transport unit.
Best technology before this, the dispersion of failure reduces to minimum, but can't control fully.One of main consequence of this situation is to have limited total equilibrium of the particulate that mixes with these method production mineral boards.
The Application of Technology need be considered from economy.The particulate that is added in the newborn fiber is good in response to distributing with technology, and therefore the quantity of the particulate that reclaims as the plate body composition does not have in the quality to plate should increase under the situation of disadvantageous effect.Purpose of the present invention that Here it is.
According to the present invention, introduce fibrous nits and traditional technology antithesis, said particulate is in check, therefore passes the suitable at once whizzer of annular fibre curtain and descends when particulate.
Usually the condition that fibre curtain is got off from centrifuge stream known to plays an important role to the production of plank.Especially, traditional target is to prevent that as far as possible to blowing any interference of gas of year fiber, especially for the standard thickness that prevents fiber as far as possible changes, this will be unfavorable for the fiber uniform distribution in the plate body.The present invention is surprised to find that and is not having significant change near the particulate of bringing annular curtain into by air-flow on the position of whizzer for standard thickness, and particulate is distributed in newly-generated fiber very equably.
The air-flow that enters annular curtain place by the observation particulate can partly be explained above-mentioned phenomenon.So find,, and under certain speed condition (below will explain), blow the air-flow that carries particulate and just explode if air-flow is passing curtain with the enough near place of whizzer.
Do not study the mechanism that causes " blast " in great detail, but this blast makes particulate distribute well in blowing the air-flow that carries fiber.Generally speaking, this zone of whizzer below not only is subjected to along whizzer unfolded air-flow, but also is subjected to blowing the air-flow that carries fiber.
According to the present invention, mix particulate and preferably be selected on the position of air-flow curtain contraction.
The particulate that is mixed moves to blowing carrier gas stream till shrinkage strain place of air-flow, and this has just reached particulate is disperseed well.
If it is far below the air-flow shrinking zone to mix the place of particulate, the distribution of particulate just can not spread all over the whole air-flow that carries fiber that blows again.Meanwhile, keep with whizzer a minor increment being arranged, the air current flow that attenuates in the position that attenuates is just interference-free.This distance is perhaps very little; Be generally selected in apart from the places beyond 150 millimeters of the scheming belows, the fiber that is generated is stable, and blows the desired condition that attenuates that no longer hinders of passing of the air-flow that carries particulate.
For the ease of mixing, blow the place that the air-flow that carries particulate is attenuated by the lateral alignment air-flow.The propagation direction of these two strands of air-flows is orthogonal or approaching vertical.
Being that vertical direction is angled with normal direction allows, constitutes certain inclination angle and just can make the air-flow that blows year particulate penetrate the circular fiber curtain.
Furtherly, the air-flow of inclination will enter fibre curtain, and can not impact the parts of the contraction place that is positioned at curtain, be meant the device that is used for jet binder especially.
Consider these conditions, blowing the air-flow that carries particulate should become 30 ° at least with vertical direction, at 45 at least better.
It is favourable blowing that the direction of carrying particulate is positioned on the vertical plane that comprises the production line direction, and then conveyer extends along the production line direction.Different therewith directions (although blow energy that the air-flow that carries particulate produces compare with the air-flow of contraction quite low, we will to this point) may cause that blowing the air-flow that carries fiber produces deviation with delivery direction, thereby the change distribution.
The present invention is described in more details with reference to the accompanying drawings.
Figure 1 shows that the synoptic diagram of producing and collecting the mineral fibre board assembly line of fiber; Particulate adding method shown in the figure is a traditional method,
Figure 2 shows that an embodiment who adds particulate by the present invention,
Fig. 3 a mixes the sectional drawing of particulate for observing traditional method, and the distribution of visible granular is bad,
Fig. 3 b is similar to Fig. 3 a, just adds the product sectional drawing that particulate is produced by condition of the present invention.
Fig. 1 represents to be used for producing three whizzers 1,2,3 of fiber, constitutes the part of production line.This several means is that the top of closed collecting chamber 4 is arranged in delegation at one basically.They be installed in the transport unit 5 that constitutes the collecting chamber bottom above.Transport unit 5 is gas-pervious.
According to the size of collecting chamber 4, one or more box 6 be directly installed on transport unit below.Make pressure in the box 6 keep below normal atmosphere in the collecting chamber 4 with an air extractor (not showing on the figure).This vacuum makes the air-flow that blows year fiber pass transport unit 5 and is drained, and fiber is stayed on the transport unit 5.
Each whizzer 1,2,3 produces an annular fibre curtain 7, is transported on the collecting conveyor by the air-flow of diffusion gradually.After shrinking, blow the air-flow that carries fiber and enlarge the formation taper at 8 places, position.
In Fig. 1, each several part is expression in proportion not, but has reflected the process of fiber from the whizzer to the transport unit as far as possible exactly.
According to economic and principle easily, between each whizzer as far as possible from more closely, like this, trample factually, as shown in Figure 1, each fibre stream of dispersing out from adjacent whizzer has the trend of converging before arriving transport unit.
Usually the various devices of installing on the route of fiber process are not shown on this figure, can be used to improve the device of the Fiber Distribution on the transport unit width such as the nozzle of injection water and binding agent and other.These devices are installed in the position of fibre curtain shrinking zone 8 usually or descend at it.
Only show three whizzers among Fig. 1, and the quantity of whizzer is very many on a large scale industry production line, nearly 10 even 12.It will be appreciated that hereinafter the present invention can be applicable to any amount of whizzer, even be used for an independent whizzer.And traditional particulate method of mixing requires to use in the occasion of several whizzers.
The fiber that is retained on the transport unit 5 stacks mutually owing to fall.Fiber layer thickness on transport unit constantly increases from the end to end of production line, and this is to form owing to piling up continuously from the fiber of each whizzer.In the outlet of collecting chamber 4, pile up the various finished product felts that are treated as of layer of fibers 9 processes that form.Especially make the binding agent composition generation polymerization that sprays on the fiber make the felt typing through one thermal treatment.In addition, the banded felt of successive is cut into the size of requirement.
As previously mentioned, limit portion is cut off usually, after being shredded or pulverizing, is directly mixed collecting chamber again with particulate or fine grain form then.
To collecting chamber 4, particulate delivers by air-flow from place that particulate is made.
Mix the place of particulate normally between two whizzers toward collecting chamber.The tracheae 10,11 that conveying is mixed with the air-flow of particulate is dispersed into the zone that newly-generated fibre stream spreads haply with these particulates.
As mentioned above, on the route of the air-flow process that is mixed with particulate, can establish a liner, if necessary, change air-flow and make Particle Distribution on the whole width of transport unit.This layout does not have shown in Figure 1.
We will be understood that, the ideal distribution that is collected in particulate in the fiber 9 on the transport unit is that requirement is blown the air-flow that carries particulate and mixed equably with newly-generated fiber a fluid stream.It is to have carried out certain mixing in fiber laydown before transport unit that Ji makes, and the common deficiency of such mixing is so that product reaches even fully.
This traditional layout, promptly production line is limited to three whizzers and two particulates mix a little, and its product is shown in Fig. 3 a.
The cross section of felt thickness has a series of tangible levels.Particulate between two middle layers 12 and 13 (for mapping conveniently increases the weight of to draw) in fact exists with higher ratio.
Although layer separates fully with layer is unlikely, it is uneven distributing, and this cause specific makes the quantity of particulate be restricted, and the particulate that mixes in any part of felt must not surpass certain particulate loading boundary.
Should note; although appropriate means for example guider can obtain satisfied Particle Distribution; but to improving the distribution of particulate on the felt thickness direction is helpless, is easy to find out, resulting distribution is owing to lack fiber/particulate blended consistence on the transport unit traffic direction.The mainly newly-generated fiber of the material that pile up in certain zone (under whizzer), and then be another zone height that wherein ratio of particulate is suitable again (particulate mix a little under), be the quite low zone of another particulate ratio successively, like that.
For obtaining good distribution, solution of the present invention is illustrated according to Fig. 2.
The building mortion of fiber is more detailed than Fig. 1 among this figure.The scheme of erection 14 that mainly comprises a cover electric motor among the figure is by tubular shaft 15 of belt transmission.The whizzer 16 that is contained in these root tubular shaft 15 1 ends is made of the cylinder that an outer wall is installed with a large amount of eyelets.
The mineral substance of fusing will be as far as possible away from the vertical axis of axle 15.Flow through the mould of the mineral material of fusing in whizzer 16.Mineral material is collected by a jar that is installed on axle 15 axial lines, is transported to the circumferential wall of whizzer again from jar, and comes outbreak out with the filament shape the eyelet from wall.
In order to make fiber-forming, adopt the whole bag of tricks to keep the material of whizzer and fusing all in suitable temperature.Therefore, be favourable with inductive method heating whizzer (perhaps heat its underpart at least, be subjected to rapid cooling) because of its underpart contacts with ambient air.An inductance loop 17 has been shown among Fig. 2.
The filament of stretching from whizzer blows by annular steam and carries.This annular steam is pyritous preferably.Annular steam is made of the combustion exhaust that a ring nozzle 18 ejects.
In the mechanism of this form, additional airflow nozzle commonly used blocks the diffusion of air-flow.For example, these air-flows can be launched from encircling 19.Ring 19 is connected with the gas of certain pressure and the direction that a round is propagated in face of the diffusion air-flow haply by the gas injection direction is housed.
The fiber of being taken out of by the diffusion air-flow forms a curtain 20, and the characteristic front of curtain had been done description.
With fiber blow be loaded onto collection device air-flow in most of the cases by shower nozzle 21 cooling of spraying water around air-flow with circularizing.The quantity of shower nozzle is abundant and abut against together to guarantee that fiber obtains even processing.
In addition, spraying a kind of binding agent around the shower nozzle 22 that blows the air-flow that carries fiber on fiber can be glued together securely with the fiber that stacks in the plate that guarantees to form subsequently.
Merit attention, mix in this combination of mode at traditional fibrous nits, particulate is directly sprayed binding agent, and these particulates can not adhere to newly-generated fiber like that securely in plate as a result.This is a factor that weakens last sheet material mechanical property greatly.Particularly, be present in that compression ratio will reduce in the blending in of fibers body if so be difficult for the adherent particulate, compression ratio can prevent that these sheet materials from returning to its original thickness.
According to technology of the present invention, the vantage point that mixes particulate be located at the fibre curtain contraction place or herein on, as shown in Figure 2.So just the particulate that mixes advantageously is limited in the upstream of jet binder, fiber grain also is coated with binding agent as a result, thereby has increased the clinging power with newly-generated fiber.
Particulate is blown to carry by air-flow from a pipeline 23 and is transported to fibre curtain, and Fig. 2 only shows the end of pipeline.
Blow the air communication of carrying particulate and cross the path that tracheae 23 laterally enters the fibre curtain operation.
The air-flow that blows the diffusion of carrying fiber is defined as allowing the latter pass the former with the various characteristics (speed, intensity or the impulse force of saying so better) that blows the air-flow that carries particulate.
Blowing the air-flow that carries particulate passes from the diffusion air-flow and brings a kind of " blast ", this blast that particulate is ejected to spread all over the whole air-flow that blows year fiber.The mechanism that this diffusion form takes place imperfectly understands at present, just know because aforementioned region is very strong vortex position, passing of particulate blowing carrier gas stream only can increase the weight of the vortex disturbance and impel two strands of air-flows to mix, and particulate is scattered in these mixed airflows.
Usually, being used for blowing the air-flow that carries particulate will flow with certain speed, and purpose is to prevent to form " tamper " in tracheae.The path that particulate passes through is in fact often quite long and will pass through some turnings, if the impellent of particulate operation is big inadequately, these factors just cause irregular operating troubles easily.
Here point out, the distance of particulate process can be above 100 meters, especially if with the particulate of cutting edge and making, grind side cut and pass back to collecting chamber and can carry out continuously in the termination of production line easily in the place of the operation of cutting edge, production line is extensible quite long usually.
Air-flow can prevent to form tamper or cause size usually in the deposition of 10 to 20 millimeters particulate.The gas velocity useful range is 15 to 30 meter per seconds, preferably at 20 to 25 meter per seconds.
Blow the air-flow that carries fiber and don't pass completely through particulate flow I in order to make air-flow intermingling satisfactorily, just mean the air-flow that blows year particulate fully to penetrate
pWith fibrous airstream I
fThe ratio of impulse force be favourable in 1/30～1/5 scope, preferably about 1/10.
The impulse force definition expression formula of air-flow is as follows:
I＝e·V
2·S
Wherein: e represents the quality (kilogram/rice of air-flow unit volume
3)
V represents the speed (meter per second) of air-flow
S represents sectional area (rice
2)
Blowing the size of the tracheae 23 that carries particulate will decide according to the situation of particulate.The cross-sectional area of tracheae should make particulate unblocked.Here point out, for the mean sizes size in 15～20 millimeters particulate and speed under the situation of 20 meter per seconds, diameter of section is got 80 millimeter and is advisable.
Diameter is too small can to increase the danger of blocking, unless increase the speed of air-flow simultaneously.Similarly, diameter is crossed conference because keep conveying finely divided required speed to cause that airshed strengthens.Latter event causes increasing energy expenditure again less than technological improvement.In addition, with respect to blowing the air-flow that carries fiber, excessive air-flow is easily upset the balance of relevant impulse force defined above.
Be noted that since diameter in 80 millimeter owing to transport with pressurized air, the air strength of blowing year particulate is more many greatly than the requirement of accurate calculation.
Reach the condition of the particulate that mixes heavy body, the content that also just equals particulate in every cubic metre air-flow reaches 0.56 kilogram, and this remains a very little numerical value.
Leave the problem of tracheae desired size and do not talk, such transported pneumatically is easy to transmit the bigger material amount that contains, and its order of magnitude reaches 1 kilogram/meter
3Perhaps higher.
As an application example of the present invention, mixing in the manner described above of fibrous nits carried out on the production line that the fiber-forming device is housed, as shown in Figure 2.
Each whizzer is produced 20 tons of glass fibre every day.This heat-insulating material is by fabulous fibrous (per 5 gram micronaire values are 3.0).
Find by experience, fiber is good more, and the influence of the particulate that plate property is mixed is just responsive more.Therefore, in order to obtain comprehensive conclusion, select to test to mixing the most responsive product of particulate.
At first, product that is to say that under best operational condition, the total amount of adding is no more than 4% of institute's making sheet at the most with the side cut of recycling crushing under common condition.This first the test in, particulate adds between two whizzers, as shown in Figure 1.
The weight per unit area of made fiberboard is 850 gram/rice
2, unit weight is 9.48 kilograms/meter
3Thickness is 140 millimeters before compression and storage.
Sheet material compresses with 4/1 compression ratio, and this ratio means that the thickness of sheet material compression is no more than 35 millimeters.Measure afterwards its caliper recovery amount through compressing like this and storing 60 days.
Still adopt traditional method to mix fibrous nits, find that all the other conditions are constant when the goods ratio that grinds of adding other source increases, the recovery of thickness significantly disappears after storing, this proof resistance to compression pression disappearance (elasticity is poor).
Here point out, when the particulate that mixes recycling (ground is cut edge and the particulate in other source) accounts for plate body total amount ratio and reaches 10%, reclaim the goods of cutting edge and compare thickness and reduce 7～8% with only containing.When the ratio of particulate is 14%, reduce 12%.
The examination and test of products shows that shown in Fig. 3 a, the distribution of particulate on the thickness of product is very uneven.
The quality of sheet material that has been appreciated that this bad distribution influence, the high more influence of the ratio of particulate in sheet material is just serious more., show on performance and obviously do not improve by the fibrous sheet material of new life with mix the cut edge sheet material of (its gross weight be plate body 4%) of ground again by more fully.Particularly the amount of recovery to thickness has no significant effect.
The test of under condition of the present invention the particulate of different ratios being carried out obtains on the thickness Particle Distribution product quite uniformly, shown in Fig. 3 b.
In Fig. 3 a and Fig. 3 b, the distribution of particulate 24 shows as can observable form.On the practical work, when the fibrous nits that mixes is during by similar above-mentioned explained hereafter, cut edge or waste product no matter particulate derives from, the difference between fiber and the particulate is inconspicuous.Its difference has only the testing fiber structure just can find out.For the fiber of studying these microgranular textures has been coated with binding agent earlier, so just can cause that color has slight variation (used tackiness agent can make fading of fiber).
The improvement of Particle Distribution is reflected on the caliper recovery amount, particularly when the content of particulate is high.This is with to adopt traditional particulate to mix mode gained result on the contrary, the amount of recovery of thickness in fact for content meet or exceed board quality 10% with unaffected.
The good sheet material of fiber quality (per 5 gram micronaire values be 3.0) mixes that 4% the particulate that is got by side cut and 7% others are come but the identical particulate of character, caliper recovery amount very little (about 4%) as a result.
Relevant with the most widely used general insulating product of produced in conventional processes is not so good fiber (per 5 gram micronaire values are 3.5 even 4.0), and when with this fiber making sheet, in fact so little caliper recovery decrease is difficult to discover.
From these results, proved the possibility of manufacturing mineral fiber tilesn proposed by the invention, containing at high proportion, particulate also keeps satisfied performance and plate property is not had detrimentally affect.Furthermore, for the insulation product of expection, the present invention points out emphatically the particulate ratio of mixing according to the present invention does not have materially affect up to 15% to the heat conductivity of made plate.
Claims (10)
1, a kind of method of producing mineral fiber tilesn is to form fiber by the material that melts by foraminous whizzer on the circumference, molten material these eyelets by whizzer eject and become ultimate fibre, one air-flow that comes out along the whizzer circumference blows ultimate fibre and carries and it is attenuated, the original ringwise gas of this strand flows to and shrinks the air-flow that has formed taper below the whizzer, blow the fiber that carries by air-flow and be blown to a collecting conveyor and collection there, transporting in the process between from the whizzer to the transport unit will be sprayed a kind of tackiness agent on fiber, simultaneously, fibrous nits also is impregnated in, fall on the transport unit with the fiber of new generation, fibrous nits mixes mutually with the new fiber that produces, it is characterized in that the fibrous nits that mixes is blown by air-flow carries, the direction of this air-flow is with to blow the air flow line that carries the new fiber that produces perpendicular, and and one air-flow of back whizzer and blow between the air-flow punctured position that carries fiber a bit on converge.
2, in the method according to claim 1, the flow direction and the vertical line that blow the air-flow that carries particulate intersect at least 30 ° of angles, that is to say, intersect 30 ° of angles with the flow direction that blows the air-flow that carries fiber.
3, according in claim 1 or 2 methods of being said, it is consistent with the transport unit length direction to blow the air flow line that carries particulate.
4, the method for saying according to above-mentioned every claim is characterized in that blowing the gas velocity of year particulate in 15～20 meter per second scopes.
5, in the method for saying according to above-mentioned every claim, blow the air-flow that carries particulate and the impulse force that blows between the air-flow that carries fiber compares I
p/ I
fIn the 1/30-1/5 scope.
6, in the method for saying according to claim 5, ratio I
p/ I
fBe 1/10.
7, in the method for saying according to above-mentioned every claim, the admixture particulate is to carry out in the section front of fiber coating tackiness agent in the air-flow that carries fiber toward blowing.
8, according to above-mentioned every in the method said of any one claim, some is side cut from institute's producd fibers plate on the production line for the fibrous nits that recycles.
9, according to above-mentioned every in the method said of any one claim, the ratio of contained fibrous nits is equal to or greater than 10% in the fiberboard that is produced.
10, fiberboard be according to above-mentioned every in the method said of any one claim produce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104458 CN1009731B (en) | 1985-06-11 | 1985-06-11 | Process for the production of mineral fibre mats from a molten material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104458 CN1009731B (en) | 1985-06-11 | 1985-06-11 | Process for the production of mineral fibre mats from a molten material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85104458A true CN85104458A (en) | 1986-12-10 |
| CN1009731B CN1009731B (en) | 1990-09-26 |
Family
ID=4793855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85104458 Expired CN1009731B (en) | 1985-06-11 | 1985-06-11 | Process for the production of mineral fibre mats from a molten material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1009731B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052213C (en) * | 1994-12-29 | 2000-05-10 | 欧文斯－科尔宁格公司 | Alternate commingling of mineral fibers and organic fibers |
-
1985
- 1985-06-11 CN CN 85104458 patent/CN1009731B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052213C (en) * | 1994-12-29 | 2000-05-10 | 欧文斯－科尔宁格公司 | Alternate commingling of mineral fibers and organic fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1009731B (en) | 1990-09-26 |
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