DD227692A1 - METHOD OF MANUFACTURING MULTILAYER WOOD GLASS - Google Patents

Abstract

The invention relates to a manufacturing method for multilayer hollow glass, in particular of multilayer hollow glass with colored Innenueberfang and plastic Aussendekor, are combined in the working method of manual shaping with mechanical forming process. The aim is the rational production of multilayer hollow glass, in particular of hollow glass with colored Innenueberfang and plastic Aussendekor, the object was to mechanize work processes of manual production of multilayer glass while avoiding the defects of known processes for the production and use of prefabricated Farbglasmaentel and multi-layer hollow glass with colored Innenueberfang already in the molding process to achieve a plastic Aussendekor. For this purpose, to form the outer layer of a multilayer hollow glass, a hollow glass body by spinning a gob in a rotating about its vertical axis of symmetry machine-made and parallel to manually formed from a different color different glass a Kuelbel and used in the still thrown hollow glass body, injected firmly and merged with the held at the melting temperature inner wall of the hurled hollow glass body.

Description

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• Title of the invention

Production method for multilayer hollow glass

Field of application of the invention

The invention relates to a production method for multilayer hollow glass, in particular of multilayer hollow glass with colored inner overlay and plastic outer decoration, are combined in the working method of manual shaping with mechanical forming method.

Characteristic of the known technical solutions Multilayer hollow glass is understood to be hollow glass articles whose inner or outer wall is covered with at least one transparent or opaque colored glass layer. · In order to emphasize this decorative effect, colored glass is decorated on the outside with cuts that reach into the bright base glass · On the other hand, when the glassware is internally covered with colored glass, the colored glass layer shines through the clear glass. * These glasses are usually provided with a large surface finish of the outer glassy layer to support the optical effect. Multilayer hollow glass is predominantly produced by means of manual working techniques.

For outside colored hollowed hollowware several working methods are known. The simplest method is to make a parison of colorless glass and coat it with a layer of colored glass. "The parison is processed manually in the usual way. A better color distribution can be achieved, however, with hood overlap. For this one blows out of a colored glass

make a thin-walled ball and let it fall into a double-walled shell or blow a hole in a superheated place opposite the glassmaker's pipe and form a colored glass funnel. "The double-walled shell or funnel is tapped off into a holder and parallel to it by another glassmaker in the case of this, when the cuvette is inflated, the light glass merges with the colored glass. The outer wall of the double-walled shell is splashed with water and knocked off. "A glass parchment is now adhered to the glass cover and a hollow glass article can be produced in the usual way * Hollow glass articles overlaid on the inside only by piercing a colored glass cover with a clear glass and subsequent manual Operations of hollow glass production made. The purely manual production of multi-layered leg requires experienced glassmakers and is associated with a high manual effort · The uniformity of the colored glass layer often leaves much to be desired. For this reason, prefabricated colored glass jackets are sometimes used, which are retrieved from the warehouse if necessary, thoroughly "cleaned and heated to the processing temperature before being taken up with a glass envelope." This relieves the glassmakers of manual production but relieves additional manpower and equipment In the case of prefabrication, storage, cleaning and reheating, improper cleaning results in blisters in the coalescing layer, resulting in increased rejects when prefabricated colored glass shells are used. * When hollow glass bodies are shot, a gob formed into the shape is deformed under the influence of the The outer surface of the hollow glass body assumes a shape determined by the spin shape, the inner surface thereby being affected by the surface tension of the glass s with shaped ·

With a multiplication of the spin cycle, new mold solutions can be obtained if the object is first thrown to size and then cut another gob

and spin on the base glass. Although multi-layer glasses can also be produced in this way, these bodies have a color effect that changes over the height of the article. Sine uniformly colored glass layer, as it is known from the manual Innenfangfang ago, but can not be achieved.

Object of the invention

The aim of the invention is the rational production of multi-layer hollow glass, in particular of hollow glass with colored Innenüberfang and plastic outer decoration.

Essence of the invention

The invention has for its object to mechanize individual operations of manual production of multi-layer hollow glass while avoiding shortages of known methods of preparation and use of pre-solid colored glass shells and their production and in multilayer hollow glass with colored inner cladding already in the molding process to achieve a plastic exterior decor ·

According to the invention, the object is achieved by, in each case for forming the outer layer of a multilayer hollow glass, a hollow glass body by spinning a gob in a brought about their vertical axis of symmetry for rotation spin-machine and mechanically parallel to this manually from another deviating in its color glass matching thermal expansion a parison shaped and injected to form each of the inner layer of a multi-layer hollow glass in the still hot hurled hollow glass body, blown firmly and thereby fused with the held at the melting temperature inner wall of the hurled hollow glass body. This eliminates the usual intermediate technological steps of cooling, storage, cleaning and reheating, as well as the danger of blistering in the fusion zone which exists due to insufficient cleaning.

While the hollow glass is trapped outside the colored glass to a thin-walled hood and a Hellglaskülbel is sunk into this and merged with the color glass hood to a Mehrschichtenkülbel, in the production of hollow glass with Innenüberfang a Hellglasposteh is thrown to a hollow glass body and injected a Farbglaskülbel in this and merged with "its hot inner wall. In both cases, the multilayer blanket thus formed can be further processed manually.

Hollow hollow glass with a special decorative effect is obtained when the light glass post is thrown into a hollow glass body with a plastic outer decoration. After injecting a Farbglaskülbels in a hollow glass body, which already received its final shape in the spin process including a plastic outer decor, conveys the hollow glass body through the colored Innenüberfang a completely different optical impression, since in this case the opaque or transparent ink layer as a background for the plastic outer decoration through the clear glass lights and thus underlines the exterior decor visually. Compared with, for example, a bowl hurled out of clear glass or colored glass, a novel product is thus created which produces a ready-to-use product _. ,

After the cooling of the hurled hollow glass body, which has been covered with a colored glass layer on the outside, to shape stability, the article is removed from the mold. For its final completion, only the edge of the article still has to be processed by separating excess colored glass parts. This can be done, for example, in a known manner by hot cutting or blasting and grinding.

For the production of multi-potted hollow glass articles thin-walled hoods are thrown from different colored glass. When a piece of bright glass was sunk in a hurled glass hood and the se-r - fused and a multilayered bubble was formed, it is lowered again into a hood thrown from another colored glass and fused with it.

This process can be repeated several times before the multilayer pellet is then blown out into an article.

The invention will be explained in more detail in the following exemplary embodiments:

embodiments

Example 1: Production of a shell with colored inner overlay and plastic outer decoration

At a port furnace with light glass port and glass port is taken from a combined manual-mechanical workshop by a Külbelmacher colored glass and formed into a Parbglaskülbel · Parallel to a beginner Hellglas starts and thus feeds a centrifugal machine with a pneumatically driven scissors, in their shape after tripping scissoring cut by foot switch a post and brought to a preselected Abstehzeit with the mold for rotation. Immediately after the formation of the article shape and the decoration, the mold rotation is braked and a blower approaches with the prepared Farbglaskülbel to the spin mold, lowers the parisons in the still hot article and blows the parisons firmly into the article. After melting the blown parison with the inner wall of the article and cooling to sufficient dimensional stability of the article is removed from the mold hanging on the glass whistle, knocked off and placed in a refrigerator. After cooling, the supernatant glass residue is broken off, and the edge of the shell is sown by grinding, Example 2: Preparation of a cup with two-layer color overlay

At a furnace occupied with several glass containers between two light glass hoppers and a spinning machine arranged opposite to the colored glass harbors, the slingshot on the right and on the left are prepared for a manual workstation Hellglaskülbel. At the same time, colored glass jugs are thrown by means of the spinning machine. After completion of a piece of bright glass tubing and a colored glass hood, an injector lowers the bright glass envelope into the

hurled the hood, picks it up with the parabola and forms it into a simply caught bright-glass veil. In the meantime, a hood is hurled from a second color and the simply trapped parabola is sunk into this hood, the hood is picked up by means of the parison and manually shaped into a multilayer pellet, in each case being heated to the processing temperature. This parison is then blown into a two-part cup shape. After reaching a sufficient dimensional stability of the cup blank is separated from the pipe and registered for cooling. In an analogous manner, the simply trapped parison can be blown to a cup blank and then registered for cooling. The temporal interaction of Külbelmacher and Ausbläser with the spinning of the hoods is organized so that in each case from left and right hoods of the required color are taken without.daß the hoods in the centrifugal form under a for merging with the Hellglaskülbel or Cool the temperature of the simply overpowered parlor.

Claims (3)

Invention claims> 1. A manufacturing method for multilayer hollow glass by bringing together and merging manually produced paris with 'machined Hohlglaskörpem, characterized in that each forming an outer layer hollow glass body formed by spinning a gob by means of known centrifugal machines to a hollow glass body and from another in the color Manually formed a parison from this deviating gob with suitable expansion behavior, kept at the melting temperature and positioned to form a respective lined layer in the cavity of the spun hollow glass body, is brought into contact with the inner wall held or brought to Verschmelztemperatur and fused. 2. The method according to item 1, characterized in that a preferably thick-walled hollow glass body is thrown out of a light glass post with plastic outer decoration and a preferably thin-walled Farbglaskülbel will blow in this. The method according to item 1, characterized in that a preferably thick-walled bright glass envelope is manually formed and positioned in a thin-walled hood thrown from a colored glass, fused thereto and then formed into a multi-layered bubble and either blown out immediately to an article or again into an earlier one sunk into another colored glass thrown thin-walled hood, merged with this and blown into a form a multiply overlaid parisons molded.