DE594764C - Process for the production of fibers or threads from glass, slag and similar fusible materials - Google Patents

Description

Tv.I »t JZ

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Bur. Ind. Eige
. 2 4 APR. 1 * 934

ISSUED ON
MARCH 21, 1934

The subject of the invention is an "improvement of the method according to the patent 539738, according to which fibers or threads made of glass, slag and similar fusible Substances are manufactured in such a way that the melted mass in a thin Current flows onto a rapidly rotating disc, from which it is thrown off in the form of fine threads and is discharged to the lower end of the work area. ,

In order to avoid premature cooling and that which flows out of the melting container Keeping the flow of material at a fluid level that is favorable for this purpose until the thread is formed is essential in this process the working space open at the bottom on the whole stretch, from the outflow of the melting vessel Enclosed to below the 'slinger,' and hotter at the top with a feeder Gases provided. As a result, the temperature in the room drops from top to bottom, but these agents do not add a glass wool that is sufficiently cooled in the technical sense, it is rather tensions inevitably, which gives the finished threads an undesirable disadvantageous brittleness give. The same also applies to another known method in which the Threads are drawn individually from a nozzle of the melting • container and the tube is open at the bottom The working area is heated controllably from the outside in order to keep the material up to completion. the thread formation ■ to keep doughy-viscous'. ':

According to the invention is now in 'the method of the main patent, the temperature of the work area by several distributed at the same height, independently of each other adjustable heat sources in the sense of a temperature gradient from top to bottom that can be regulated as required and one that can be regulated gradual cooling of the threads produced during their downward movement.

This makes it possible in every case - even with different starting materials Character and different melting temperatures - to achieve tension-free threads, which have high elasticity and flexibility. So their brittleness is eliminated or decreased. As a result, the threads become more resistant to vibrations and other stresses and thus more durable. They are also better

594704

process, ζ. B. spin, weave or braid. It is also possible to use the threads to be produced in any length.

In the drawing is one embodiment a device suitable for carrying out the method is shown.

α is the melting container for the material, b is the outlet, which can be regulated by a plug c , through which a continuous thin stream of molten mass is allowed to flow onto the centrifugal disk d, which is driven at high speed. Due to the centrifugal effect of the disk d , the mass is in the form of the finest threads

iS thrown off. / are scissors knives, through which the jacket-shaped shell formed by the threads, which in the space around the Disc and its shaft sink, continuously or intermittently.

e is a nozzle that is open at the bottom towards the working area, through which air is blown to press down the threads produced. This air can have a more or less high temperature for the present purpose. If necessary, gas or steam can also be supplied through the nozzle in its place, g is a duct for supplying hot air or gases into the upper part of the working space, h and i are supply lines for hot or cold air, etc., arranged above or below the centrifugal disk. Like. All channels and lines can be provided with suitable devices for regulating the quantities supplied.

The device can operate, for example, as follows:

During the manufacture of the threads or fibers, highly heated air or the like is introduced into the working space through the channel g and possibly also through the nozzle e , so that the temperature of the material flowing out is kept so high that it cools down prematurely and thereby forms it of residues from the material is avoided. The air or gas supplied through the channel g can, for. B- be taken from the melting container α. A further supply of heat takes place through the line / i. Depending on the requirement, however, a lower heat can be used here, and this lower temperature is expediently chosen so that the threads that are formed already experience a slight cooling, which is such that tensions in the threads are avoided. In the further course of the production process, hot air, gas, or the like, or cold air, gas, or the like, stepped further downwards, is fed to the working space through line i to complete the cooling process.

The precise control of the amount of heat or cold supplied and their temperature . depends on the respective nature of the starting materials and their The degree of fluidity and heat, as well as the properties required of the end product.

Claims (1)

Claim: Process for the production of fibers or filaments from glass, slag and the like fusible substances according to patent 539 738 »in which the open at the bottom Work area along the whole route, from the outlet of the melting vessel to below the slinger, enclosed and on top with a supply of hot gases is provided) characterized in that the temperature of the working area distributed by several at the same height, independently controllable heat sources in the sense of a controllable as required Temperature gradient from top to bottom and an adjustable gradual cooling of the threads produced during their downward movement is regulated. 1 sheet of drawings