DE1760911A1 - Method and device for producing a fiber mat - Google Patents

Description

The invention "relates to a method and an apparatus for the production of a mat or blanket from fibers, whereby fibers are deposited on a movable collecting or collecting surface which are dispensed from a device arranged above this collecting surface. On this area A binder can also be added to the fibers. The fibers and the binder can also be heated and to be cured. The fiber mat can then be trimmed at the edge, cut to the desired length and packaged will. All functions of the device can be controlled by a main control to the variable

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BATH ORIGINAL

Adjust sizes to the type of product to be manufactured. Some of these punctures are apart dependent, so that a change from one of the variable variables to a change in the rest in the working direction subsequent punctures. The precipitation or the fc deposition of the pastes on the collecting surface can for example measured and used to find one or more of the remaining punctures on the production line for aie fiber mat to control.

As the measuring instruments for measuring and controlling the variable quantities, devices and methods have become more and more refined, it has become possible to manufacture numerous fully automatic production lines so that the products can be produced in larger quantities and with better quality. However, in production processes in which variable quantities depend on each other and the dependency changes when different types of the same product are produced on the same production line, a number of problems must be solved in order to achieve proper control of the production line by the measuring devices. For example, if a production line for the production of a large number of fibrous structures such as fiber mats or the like, the different densities, widths

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and lengths that should be used v / ground, not only the important variables have to be set during commissioning be to the individual different produTct but the variable quantities must also be related to one another to ensure that that the quality of the product is maintained and improved, and so is the output of the production line is increased.

The invention is therefore based on the object of a method and a device for the production of fibrous To create structures such as hats or the like that have different densities, widths and lengths.

According to the invention this is achieved in that a collecting or collecting surface at a storage station for fibers is moved past that from this station fibers are deposited on this surface, that the amount of on this Measured collecting surface deposited fibers and, if necessary, a binder is added to these fibers, the amount of which is proportional to the amount of deposit measured. A suitable device for performing the method comprises means for depositing the fibers on a movable collecting surface; means for collecting the fibers from above this quilt to deliver so they are on this surface

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can be deposited, a device for measuring the amount of fiber deposited on this collecting surface, which emits a signal proportional to this amount, and a Means responsive to this measuring device to propel this collecting surface at a speed which is proportional to the amount of fiber deposited.

A device is also expediently provided for relating the variable production quantities to one another to achieve and maintain high quality and to increase output.

The variable sizes of the production line are preferably for each of a number of products by one Main control regulated, creating the right relationship is maintained between them.

The device for supplying the fibers expediently has a heater for melting heat-softening material Material and means for drawing thin fibers from the molten material. The measuring device for the amount of the deposited fibers preferably has a device for checking or monitoring the dem Material supplied heat to this on a predetermined

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Maintain dilution temperature.

The signal that is obtained according to the amount of fiber deposited on the collecting surface can be used to " to correlate the remaining variable quantities of the process or the production line. The drive for moving the collecting surface past the device for fiber deposition may be different from that of the deposited Amount corresponding signal can be made dependent on the speed of the quilt on a size that is proportional to the measured amount deposited. The facility for feeding an additional Component of the fiber mat to be produced, such as a binder, can vary from that of the amount deposited Signal must be made dependent in order to supply this additional component in such an amount that the measured amount of deposited fibers is proportional. When the binder is heated and / or cured must, the amount of heat to be supplied for heating and hardening is proportional to the amount of heat deposited Amount of fiber. If the heater includes a device to circulate a gas through the binder and the fibers, and a device for heating the gas, the gas circulating device can use the measured deposit amount be made dependent, so that the circulated gas volume pro-

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is proportional to the measured deposit amount.

To monitor the pet relationship between the To achieve variable sizes, an X-ray measuring device can be used to the weight of the fibers and / or the binding agent deposited on the collecting surface, per unit area to measure and to emit a proportional measuring signal. This measurement signal can be matched with that corresponding to the amount of deposit Signal can be compared to check the accuracy of this latter signal. According to one predetermined difference between the actual and the predetermined amount, a difference signal can be provided to activate an alarm or the effect of the signal proportional to the amount of deposit on the drive of the quilt, or the effect of this Signal to the feeder for the additional Components or binders, and to modify the effect of these signals on the heating and curing device.

While a major variable, such as the amount of the fibers deposited on the collecting surface can be used to directly remove the rest of the interrelated Controlling variables can just as well be the correct correlation in the method and device according to the invention be maintained between other sizes,

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regardless of whether these other quantities are also controlled directly or indirectly by the measured main variable. These interrelationships can be used to directly change or modify the controls for the variable quantities. For example, the speed of the collecting surface can be used to regulate the heating and hardening of the binder by supplying an amount of heat which is proportional to the speed of the collecting surface. If the heating device has a gas circulating device, a gas quantity proportional to the speed of the collecting surface can be circulated through a furnace. A device for separating or cutting off a continuous sliver of fiber, which is dependent on the speed of the collecting surface, is attached to the movable collecting surface in order to ensure that the individual sections have the correct dimensions Λ .

As already mentioned, a master controller can be used which can give a signal to the various individual Set controls to pre-calculated values to produce a given product that has the desired density, Has width, length, etc. These setting values can then be used to ensure a uniform quality of the product the various individual controls are modified,

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by eating one of the variables to make sure that there are the correct interrelationships between the variables.

According to the method according to the invention, the speed of the collecting surface can be varied independently of the amount of fiber deposited on this surface in order to achieve a matt or blanket-like pulp on this collecting surface to obtain a desired thickness or a desired one Has weight per unit area. It can also, as already mentioned, this mat-like mass binder in a Amount to be added which is proportional to the measured amount of deposition of fibers. Between the establishment To deliver the fibers and the collecting surface, a hood can be arranged, the side walls of which have the width of the Determine the fibers deposited on the collecting surface. The speed of the quilt can depend on the measured deposit amount and the adjustable hood width can be varied to achieve the desired thickness of the fiber deposit to obtain. The binder can also be heated in order to harden it and the amount of heat supplied can depend on the thickness of the fiber mat, or on the amount of binder supplied, or on the speed the quilt can be regulated. All variable sizes can have an individual setting point

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or fixed point according to the specified operation, and they "can depending on the measurement of a Main variables are regulated to maintain the correct interrelationships.

Exemplary embodiments of the invention are provided below explained with reference to the drawing in which

Figure 1 shows schematically a production line according to the invention.

Figure 2 shows in perspective an adjustable hood for regulating the width of the fiber deposit and

FIG. 3 shows a block diagram of the control circuit for the production line shown in FIG.

In Figure 1 is a production line for the production of fibrous structures such as insulating wool mats, Ceilings or the like shown. A molten material such as glass that softens when exposed to heat out of a preheating chamber 10 to a feed device or a sleeve or sleeve 11, the tapered openings 12, which are formed at the bottom of the sleeve in order to form jets of the molten material which lead to Fibers are thinned. Electrical terminals 14 at each end of the sleeve 11 are via lines 15 and 16 with a power supply and controller 20 for the socket. The controller 20 supplies current to the terminals 14, which is converted into heat

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that flows through the sleeve 11 in an amount that sufficient, the molten material in the sleeve 11 at a desired or predetermined dilution Teiaperatur to keep.

Although other devices can be used for the dilution, a fan 13 is used here to generate steam or other To direct gases to the jets emerging from the openings 12 in order to thin these jets to Pasern, the be picked up by a movable collecting surface 40. In this example, the movable collecting surface 40 consists of an endless belt 41 ', preferably made of a material provided with pores so that a suction effect can be exerted from below the belt in order to pull the fibers against the belt to pull to keep them in their deposited position, this belt running over conveyor rollers which are driven by a drive 42.

The deposition of the thin fibers, limited to a predetermined range. It can be seen from FIG. 2 that the hood 30 has an end wall 31 and a rear wall 32 and has side walls 33/34. Each of the side walls 33/34 is via one or more arms 35 with a control 36 for the Width connected. The side walls 33 and 34 can be moved in and out in this way to the width of the Fibers deposited on the collecting surface of the tape 41

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to determine. The width control 36 has suitable ones mechanical links, for example a rack and pinion, which are driven by a motor, the is responsive to a signal from a master controller to open the pages 33 and 34 to be set to the desired width.

One or more manifolds 50 distribute a binder or other additional component to those on the belt 41 pooled fibers. The distributor can have a flow control such as a valve 51 with a Binder supply 52 be connected. The flow of binder through valve 51 can be controlled electrically by a controller for the binder supply can be regulated. Although as an additional component that is added to the fiber mass, the is deposited on the belt 41, a binder is indicated, other components can also be added to the mat in addition to or instead of a binder. For example, if the mat to be produced is used as a filter finds, it may be desirable to distribute a collecting component such as an oil or the Mat to enforce so that dust or dirt particles from the air adhere to the otherwise relatively smooth glass fibers form a filter mat.

A device for measuring the actual deposit in the form of the weight per unit area for over-

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monitoring, for comparison and for triggering an alarm provided v / earth if a tolerance is exceeded, or to modify one or more of the variable quantities. A measuring device 60 using X-rays is suitable for such a purpose. When a bundle of X-rays passes through the mat-like paserraasse, a measuring device shows how much of the X-ray radiation has been absorbed. In this way it can Measuring device 60 for measuring the amount of Paser per unit area and / or the amount of binder or an additional one Component and the pasting of the mat formed on the belt 41 can be used.

In making a majority of the fiber mats it is desirable or necessary to apply pressure. To do this will be Pressure rollers 65 used, by which the mat-like mass is compressed to the desired thickness. the Pressure rollers 65 are regulated by the pressure control 66, to set the pressure to the desired value. The compression the mat can take place before and / or during the hardening of the binder.

What is added via the distributor 50 is added through an oven 70 Cured binder or otherwise heat-treated the additional component. Lines 71 and 72 are with each other

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connected to a gas, usually air, through having pores provided oven conveyor belts and thus also to circulate through the combined mass of binding agent and fiber. If heating is desired, the circulated air or gas is heated by heater 74, which is provided by a Heating control 75 are regulated, which responds to a thermocouple 76 or other heat measuring device, which is arranged in the furnace 70. An oven fan drive regulates the amount of air circulated through the fiber mass.

In some examples it is desirable to either trim the edges of the fiber mat to a desired width or to remove or straighten the raw and rough edges in order to obtain a uniform appearance. For this Saws 80 are used, with the width and the speed the straightening is regulated by the saw control. By means of a cutting knife 85, the continuous Fiber mat cut into the required lengths. The operation of the cutting knife is controlled by the cutting knife 86 regulated. The fiber mat is then placed in packaging station 90 in various ways for shipping packed, which depends on the individual mat.

Referring to Figure 3, there is a control circuit in block diagram form shown, which are used to control the in Figure 1

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device shown is used. A main control 100, such as a computer, is entered a punch card, which is inserted into a slot 102 and read or scanned in the usual manner, specifically by selected manual settings, which are made as a program, for example by setting control disks and buttons 101 into the machine, or by any other suitable means, for example by using electromagnetic tapes or other devices to read the setting of a controller. The main control input contains information about the width, thickness, density, type of binder, curing and other information for the variable sizes, depending on the requirements of the desired product. The main control issues an output signal via line 100a in order to create a fixed point or set point for each of the variable quantities, which has been precalculated as the probable operating point of each variable. In some examples, no modification of the fixed point is provided by the main control. For example, the fixed point obtained by the control 36 for the hood width rarely requires a change in this control 36, since the walls 33 and 34 of the hood 30 are at the correct distance. Likewise, the print controller 66 or the saw controller 81 is unlikely to have any during a cycle of operation

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Require change. Other variables, however, are related to each other and when a variable is to itself changes, the other interacting variables must also be changed accordingly.

In a production line as shown in Figure 1, the main variable in most examples is Throughput through the sleeve 11 or the openings 12, which is a particular amount of deposited fibers on the belt results. The other variables, such as the controller 53 for the binder supply, the controller 45, for example for the belt drive, the heating control 75 »the furnace fan drive 73 and cutter control 86 receive their initial set-up points from the main control via line 100a 100, these setting or fixed points on the basis of a predetermined throughput or the amount of Fibers deposited on the belt 41 were precalculated.

If the main variable is not changed, the operation proceeds on the basis of the preselected settings, given by the main controller 100. This means, a given fiber throughput or a given one Amount of fiber deposited on belt 41 require that through manifold 50 a preselected amount of binder or a additional component is added. In addition, the tape 41 on the device for depositing the fibers with a

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The speed preselected and set by the controller 45 is moved past. By the heating control 75 it is ensured that the preselected amount of heat is supplied by the heater 74, and that the so heated Air in the amount or volume that is circulated has been preselected and set in the oven fan drive 73. As the speed of the conveyor belt 41 is not varied, the duty cycle of the cutting knife controller 86 remains, which is used to produce the predetermined Lengths is used on the value preselected and set in this cutting knife control 86.

However, if the main variable is changed for any reason during the production process, the interrelated variables can be changed accordingly to maintain the desired quality.

In the device shown in Figure 1, the amount of deposit has been chosen as the main variable. Although other suitable ways can be used to measure the amount of deposit, it is preferred here to obtain an indication from the output of the melting unit by monitoring the power supplied to sleeve 11 via lines 15 and 16 which is necessary to achieve this to keep molten material at a predetermined dilution temperature.

In this example, the power supplied to the sleeve 11 is an indication of the power flowing out of the sleeve Amount of glass. Therefore, the power supplied to the sleeve is measured by the flow meter 25, which is a signal that is proportional to the amount of fibers deposited on the belt 41. According to Figure 3, this is proportional A signal is given to the dependent variables via a line 25a in order to modify their effect, if the measured amount of deposit differs from the predetermined amount of deposit, which is the case with the dependent Variable has been set by the main controller 100. The signal proportional to the amount of deposit can itself be used to determine the other dependent variables to control which is one of the novel features of the invention. By using a main controller 100 to select fixed points for each of the interdependent However, by changing it, it is easier to get more precise control as a large scale for a closer control can be used for each variable within a given range as defined by the Main control has been selected. As a result, a larger area near the fixed point can be used, the one ensures greater accuracy in controlling the quality of the product.

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It is believed that during operation a disturbance has occurred in the throughput or in the amount deposited, for example a relatively large change in the temperature of the glass or other heat-softening material supplied to the sleeve 11 from the preheating chamber 10, whereby the amount deposited on the belt 41 changes. The change in the proportional signal traveling on line 25a would thus modify the effect of the main controller signal on the binder supply controller to change the amount of binder supplied to match the new deposit amount. The change in the proportional signal is picked up by the belt speed controller 45 which changes the speed of the belt 41 passing under the deposition station to maintain the desired thickness. ψ The change in the amount of deposit is also registered by the heating control 75 and the furnace fan drive 73, whereby the necessary changes in the heating and air circulation are made in accordance with the new amount of deposit, with a new working speed or belt speed through the Oven 70 receives. Finally, the duty cycle of the cutter blade 85 is changed to match the new working speed and amount of deposit received from the cutter blade controller 86.

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The change in the main variables is thus used to directly bring about a corresponding change in each of the other dependent variables. However, it can In some examples, it may be desirable to establish a relationship between variables other than the main variable to create either to effect these changes or to monitor them to see if they are accurate was. For example, the output of the controller 53 for the binder supply can be tapped via the line 53a and given to the controller 45 for the belt speed in order to achieve a monitoring or a effect direct change. This tap can be used in the same way, the heating control 75 and the To monitor furnace fan control 73 or to effect a direct change in these controls.

In the example shown in Figure 3, the output of the controller 45 for the tape speed via the Line 45a can be tapped in order to check or change the control 53 for the binder supply, the Heating control 75 to effect the oven fan control 73 and / or the cutting knife control 86.

For some products it is desirable to have actual physical monitoring of the mode of operation or operation

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of dependent variables. This can be done with the help of the X-ray measuring device be performed. As already mentioned, it can X-ray measuring equipment used for double monitoring to ensure that the correct density is achieved when the material is compressed before and / or during curing. The meter 60 observes the fibers and / or the binding material on the belt 41 to determine whether the chamfer size per unit area is the is correct for the desired thickness. The signal generated by this measurement is transmitted via lines 60a to a Comparison circuit 62 given. The comparison circuit receives a signal from the main controller 100 which corresponds to the desired Weight per unit area. If when comparing the coming via lines 100a and 60a Signals a difference exceeding a certain tolerance is observed, is activated via the line 62a Difference signal issued to turn on an alarm circuit 63.

Alternatively, a signal proportional to the throughput or the amount of sediment can be used as a comparison signal via the line 25a, a signal proportional to the amount of binding agent supplied via line 53a and / or the working speed or Belt speed proportional signal on line 45a

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BATH ORIGINAL

to the arithmetic circuit 61. The signals can be used alone or in any combination to give an output on line 61a which is a measure of the amount of fiber deposited per unit area or is proportional to this amount (by combining the amount of deposit and the operating speed), or a measure for the amount of binder and / or the W amount of fiber per unit area (by combining the signals obtained via lines 25a, 53a and 45a). The output on line 61a is then passed to comparison circuit 62 where a difference, if any, with respect to the actual measurement coming over line 60a is determined. Again, a difference signal via line 62a can be used to switch on an alarm circuit. Alternatively, the output on line 62a can be used to change the operation of the a

Control 53 for the binder supply, the control 45 for the belt speed, the heating control 751 of the Oven fan control 73 and / or the cutting knife control 86 to effect.

The variable sizes can therefore be controlled via a main control can be set to preselected fixed points, whereby these variable quantities are divided into independent and dependent variables

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divided v / earth. One of the dependent variables, preferably a main variable, can be used for this purpose become, a change in the fixed points of the other dependent variables corresponding to a change the main changeable. On the other hand, one of the dependent variables can be used to generate a To monitor or bring about change in the other dependent variables. An actual physical one Measurement of the manufactured product can be used to double-check the operation and to provide additional To issue change signals for the controls.

Changes and other arrangements of the method and the device according to the invention are possible without from Deviate within the scope of the invention.

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Claims (34)

Claims 1. A method for producing a fiber mat, thereby marked that a catch or Sanmelflache on a device for the delivery of fibers passed is that from this device fibers are deposited on this surface that the amount of on this collecting surface deposited fibers are measured and, if necessary, a binder is added to these fibers in an amount which is proportional to the amount of deposit measured. 2. The method according to claim 1, characterized in that the measured amount of fiber deposition and the amount of Binder addition can be used to control the speed of the collecting surface, depending on a desired weight To obtain a unit of area of fibers and binders on this Sainmelfläche. 3. A method for producing a fiberglass mat, characterized in that a collecting or Sarmel area a facility for the delivery of glass fibers is passed so that glass fibers are deposited on this surface, that the amount of glass fibers deposited on this collecting surface is measured and the speed of this collecting surface 109882 / U27 »; ■. ■ ' depending on the measured amount of deposition, a mat-like mass of glass fibers is varied to obtain this quilt, which has a desired weight per unit area. 4. The method according to claim 3 _f, characterized in that this Samraelfläche a fixed speed is given, which is based on a predetermined amount of deposits of fibers on this surface, and that the speed is varied from this fixed point as a function of this measured amount of deposit. 5. The method according to claim 3, characterized in that in this device for supplying the fibers molten Material is heated to bring this molten material to a predetermined thinning temperature to maintain the production of the fibers and that the amount of heat applied to this molten material is monitored or is measured to measure the amount of thinned fibers deposited on this collecting surface. 6. The method according to claim 3, characterized in that this mat-like mass has a binder in an amount is added, which is proportional to the measured deposit amount of fibers. 109882 / U27 7. The method according to claim 4, characterized in that between this device for delivery of the Fibers and this collecting area arranged a hood and that the position of the side walls of this hood is adjusted to the width of the fiber deposit to limit this quilt, and that the speed of this quilt as a function of this measured Deposition amount and the set hood width is varied in order to achieve a fiber deposition with a desired thickness. 8. The method according to claim 6, characterized in that this binder is heated to harden it, and that the amount of heat supplied is regulated as a function of the amount of binder supplied. 9. The method according to claim 7, characterized in that the binder of this mat-like mass in an amount is added, which is proportional to the measured deposit amount of fibers, that the binder is heated, to harden it, and that the amount of heat supplied is regulated as a function of the thickness of the mat-like mass will. 109882 / U27 10. Device for performing the method according to one of claims 1 to 9 »characterized by a device for the deposition of fibers, comprising a movable collecting or collecting surface (40), further by a Means for supplying fibers above this collecting surface in order to deposit the fibers thereon, a Means for measuring the amount of fiber deposited on this collecting surface, which amount is proportional to this amount Emits signal, furthermore by a device responsive to this measuring device for driving this collecting surface at a rate proportional to the amount of deposit measured. 11. The device according to claim 10, characterized in that the device for supplying the fibers comprises a device (10) for melting heat-softening material and means (13) for diluting the material comprises fibers obtained from this molten material. 12. The device according to claim 11, characterized in that this device comprises a device (20) for monitoring the heat supplied to this material in order to this Maintain material at a predetermined dilution temperature. 109882 / U27 13. The apparatus according to claim 10, characterized by a device (52 / 53J, which on this Heßeinrichtung responds to the amount of deposit and serves to make this formed fiber mat an additional component to be supplied in an amount proportional to the measured deposit amount. 14. Apparatus according to claim 13 »characterized in that this component is a binder to bind these fibers together into a coherent mass, and that a device (74/75) is provided which is dependent on this measuring device for the amount of deposit, for This binder is heated and hardened by supplying an amount of heat that corresponds to the measured amount of deposit is proportional. 15. The device according to claim 14 »characterized in that that this heating device (74 / 75J is a circulation device (72 / 73j for circulating a gas through this mass of binding agent and comprises fibers and means for heating said gas, and that said gas circulating means are applied thereto Measuring device for the amount of deposit responds to unwälzeln a volume of gas through this mass, which this measured Deposition amount is proportional. 109882 / U27 16. The device according to claim 10, characterized by means f60) for measuring the weight of the this saramel surface per unit area of deposited pas, which emits a measurement signal that is not proportional to this weight, furthermore by means of a device (62j for comparing this) Measurement signal with this signal proportional to the amount deposited in order to increase the accuracy of this latter signal check. 17. The device according to claim 10, characterized by means for comparing the real ones on this Collecting surface deposited amount of fiber with a predetermined amount of fiber that is based on the measured amount of deposit Fibers and the speed of the collecting surface is based, further in that this comparison means a signal delivers according to a predetermined difference between the actual and the predetermined amount. 18. The device according to claim 17 »characterized by a Device responding to this difference signal, for actuating an alarm device (63jt 19. The device according to claim 17, characterized by a responsive to this difference signal device for 109882 / U27 Modification of the effect of this signal, which is proportional to the amount of deposit, on this drive for the collection surface . 20. The device according to claim 13, characterized by means for comparing the real combined Amount of fibers and of this additional component deposited on this collecting surface or belt (41) are, with a predetermined combined amount of the fibers and the additional component, further characterized in that this comparison device generates a signal corresponding to a predetermined difference between actual and predetermined Amount emits. 21. The device according to claim 20, characterized by a device responsive to this difference signal for Activation of an alarm device (6 3J. 22 «Device according to claim 20, characterized by a means responsive to this difference signal for changing the effect of this proportional to the amount of deposit Signals to this drive device (42 ^ for the collecting area. 109882 / U27 1710111 23. The device according to claim 20, characterized by a device responsive to this difference signal for changing the effect of this on the amount of deposit proportional signal to the feed device (52) for this additional component. 24. The device according to claim 20, characterized in that this component is a binder, and that one Means is provided which is responsive to this measuring device for the amount of deposit for heating and curing this binder by supplying an amount of heat which is proportional to the measured amount of deposit that Furthermore, a device responding to this difference signal for changing the effect of this signal, which is proportional to the amount of deposit, on this heating and curing device (74/75 is provided. 25. The device according to claim 13 »characterized in that this component is a binder and that a device is provided which is responsive to the speed of this Quilt responds to heating and curing this Binder by supplying an amount of heat that corresponds to the speed is proportional to this quilt. 109882 / U27 26. The device according to claim 25 »characterized in that that this heating device includes a device for circulating a gas through a mass of fibers and binder and further comprising means for heating said gas, and that said gas recirculation device is adjusted to speed this collecting surface responds to circulate a volume of gas through this mass, that of the velocity is proportional to this quilt. 27. The device according to claim 10, characterized by a device (85/86) which is dependent on the speed this collecting surface is for severing a continuous sliver formed on this movable collecting surface in individual sections. 28. Apparatus for producing a fiber mat, characterized by a device for the deposition of fibers, which with is provided with a movable collecting or collecting surface, furthermore by a device for supplying fibers above this collecting surface in order to deposit these fibers thereon, means for measuring the amount of fiber deposited on said collecting surface which is one of said amount emits a proportional signal, furthermore by a device responsive to this measuring device for this amount of deposit, in order to supply this formed fiber mass with an additional component in an amount that measured it Deposition amount is proportional. 109882 / U27 29. The device according to claim 28, characterized by a device which is based on the supplied amount of the additional Component responds to this quilt with a speed igke it to drive, which is proportional to this added amount. 30. The device according to claim 28, characterized in that this component is a binder and that one of the Amount of supplied binding agent dependent device for heating and hardening of this binding agent by supply an amount of heat is provided which is proportional to the amount of binder supplied. 31. The device according to claim 30, characterized in that this heating device has a device for circulating a Gas through the mass of fibers and binder and means for heating this gas further comprises this gas circulation device depends on the amount of binder supplied in order to circulate a volume of gas through this mass, which is proportional to the amount of binder supplied. 32. Device for producing a fiberglass mat, marked by a device for the formation of glass fibers, which is connected to a device (10 / 13j for melting one in the Heat softening material and to thin out 109882/1427 glass fibers obtained from this molten material, a movable collecting surface (40 / 41J for receiving fibers from this device for forming the fibers in the form of a mat-like mass, by a device (42jznn driving this collecting surface past under this device for forming the fibers , further by a main controller (100J for outputting a signal to adjust the speed of said drive means (42) in response to a pre-calculated setting of said main controller to produce a predetermined mat having a desired thickness on said moving collecting surface and further by means for measuring the amount of fiber deposited on said collecting surface which emits a signal proportional to said amount which is fed to said drive device (42) to modify the effect of the main control signal on said drive. 33. Apparatus according to claim 32, characterized by a hood (33Jf between this device for forming the Fibers and this collecting surface is arranged and the side walls (33/34) which are adjustable to the width of the To limit fiber deposition on this collecting surface, further by means of a control device (36) for adjusting these side walls depending on a setting signal this 109882/1427 Main control (10OjI which is taken from the setting of the main control, to a mat with the desired Generate thickness. 34. Apparatus according to claim 32, characterized by a device (52j for adding a binding agent to this mat-like mass, further by a controller (5 3) for this device (52) which is dependent on this main control signal in order to set the amount of binding agent to be added, further in that this control (53 ^ is also dependent on this signal proportional to the amount of deposit, in order to modify the effect of this main control signal on the amount of binder to be added. 109882 / U27