DE1283443B - Process for the production of multilayer glass products - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

C03b

German class: 32 a -19/00

Number:
File number:
Registration date:
Display day:

P 12 83 443.4-45 (O 13009)

January 25, 1968

November 21, 1968

The invention relates to processes for the production of multilayer glass products which are used in civil and industrial buildings are used.

It is a method for the production of multilayer glass products is known in which a joint heat treatment of a glass plate and glass powder poured onto it takes place.

In this process, the manufacturing process takes place in a metal bath. The surface of the molten Metal glass mass is supplied and this is moved along the bath in the form of a belt. then Powder is poured onto it, which under appropriate temperature conditions forms a porous layer forms. The multilayer tape thus obtained comes from the surface of the molten metal on the roller table of a cooling furnace.

The technological process in this method requires expensive and complicated equipment. At the The transition of the glass ribbon from the surface of the molten metal to the roller table leads to ao Bending of the belt, as a result of which cracks and deformations appear in the porous layer.

The lateral limitation of the moving ligament caused by the pelvic walls is stronger porous layer friction between this layer »5 and the walls, making the movement of the belt difficult and causing deformation and tearing of the Can lead to tape walls.

The invention is based on the object of specifying a method which enables the production of higher quality multilayer glass products according to a mechanized flow method using a simple plant allowed.

This object is achieved in a process for the production of multilayer glass products with at least a porous layer by joint heat treatment of a glass base and one on this poured glass powder forming a porous layer, solved according to the invention in that Before pouring the glass powder onto the glass base, use the edges to form a trough-like shape Profile to be angled upwards and that the glass base with the powder layer on it in the form of a continuous band with support is moved through a roller table through an oven.

In the method according to the invention it is possible to produce multilayer products from both ordinary Glass as well as from other vitreous materials.

An embodiment of the method according to the invention is now when it is carried out in a Method of manufacture

of multilayer glass products

Applicant:

Ordena Trudovogo Krasnogo Znameni zavod

Avtosteklo, Konstantinovka (Soviet Union)

Representative:

Dipl.-Chem. Leo Zellentin,

Dipl.-Phys. Richard Luyken, patent attorneys,

6700 Ludwigshafen and 8000 Munich

Named as inventor:

Konstantin Timofejevic Bondarev,
Michail Ivanovic Barsukov, Kiev;
Ljubov Dmitrijevna Kravcenko,
Anatoly Gavrilovic Minakov,
Konstantinovka (Soviet Union)

in the drawings schematically illustrated system explained in more detail. It shows

F i g. 1 a system for the production of multilayer glass products in longitudinal section,

F i g. 2 the section II-II of the system according to F i g. 1,

F i g. 3 the section III-III of the system according to F i g. 1, F i g. 4 the section IV-IV of the system according to F i g. 1.

The method for manufacturing multilayer glass products is carried out as follows.

In a pair of rollers 1 (FIG. 1), a glass ribbon 2 of the desired thickness (3 to mm) rolled. The plastic glass ribbon is arranged one above the other by a caliber rolling mill 3 Rolling carried out.

The lower roller 4 (FIG. 2) is longer than the upper roller 6 and has a 5 caliber. Between these Rollers 4 and 6, the edges 7 of the glass ribbon 2 are angled upwards, so that this is a trough-like Shape.

Then the glass ribbon 2 arrives in a crystallizer 8 (FIG. 1) and is coated there from a bunker 9 by a feed device 10 with a glass powder with glass former, which is preheated with the aid of tube heaters 11. A device distributes the powder evenly over the width of the trough. The glass ribbon 2 with the glass powder layer is then subjected to a heat treatment, which is a

S09 638/1357

Solidification of the glass ribbon, foaming of the glass powder, its solidification and cooling of the recovered multilayer tape includes.

At the beginning of the cooling zone, the foam mass is at a temperature that is 180 ° C below the maximum temperature during foaming, leveled and compacted with the aid of a roller 14 (FIG. 4).

If the multilayer tape is cut transversely, plates are obtained after the heat treatment which either consist of a foam-like layer, which is covered on three sides with glass-like plate material is, or from a foam glass, which is on three sides with flat glass or glass-like flat material is covered. The porous and the clear layer sinter together firmly and thus form a uniform Whole.

In order to avoid deformation of the band edges 7 after the band 2 has been bent, transport rollers have 15 (Fig. 3) of the crystallizer 8 limiting disks 16. The crystallizer rolls are made of steel resistant to bathing and are water-cooled.

After leaving the crystallizer 8, the multilayer tape is cut into plates with the aid of diamond saws cut to the desired size.

Claims (1)

Claim: Process for the production of multilayer glass products with at least one porous Layer by joint heat treatment of a glass base and one poured onto it, Glass powder forming a porous layer, characterized in that before the glass powder is poured onto the Glass base the edges of which are angled upwards to form a trough-like profile and that the glass substrate with the powder layer located thereon in the form of a continuous Belt is moved through an oven with the support of a roller table. 1 sheet of drawings 809 638/1357 11.68 © Bundesdruckerei Berlin