Process and mould for the manufacture of multi-walled hollow bodies, especially of glass
AssigneeKlepsch Kunst GmbH & Co. KG Galerie
InventorKristian Klepsch
Life of this patent
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Abstract
The manufacture of double-walled or multi-walled hollow bodies, especially of glass, is difficult in practice and entails great expense. According to the invention, the cavity formed between the walls of the hollow body is filled with auxiliary moulds or auxiliary mould parts which serve to mould the walls of the hollow body and which, after manufacture of the latter, can be removed from the cavities, especially by dissolving in a solvent, without destroying or even adversely affecting the hollow body.
Claims15
A molding process for the production of a hollow vessel from a meltable casting material such as glass, said vessel having at least two walls spaced apart and joined together by a plurality of lateral webs, comprising the steps of:
- (a) positioning a first destructable hollow auxiliary mode form (14) having a plurality of lateral passages (20) extending therethrough within a hollow outer mold (11) but spaced therefrom to define an outer wall chamber (15) therebetween,
- (b) introducing said casting material into said outer wall chamber, said lateral passages, and over the inner surface of said auxiliary mold form,
- (c) hardening said casting material to define a unitary hollow vessel having an outer wall (18) and an inner wall (19) spaced therefrom but connected thereto by a plurality of webs (21) formed within said lateral passages, and
- (d) chemically dissolving said auxiliary mold form.
A mold assembly for the production of a hollow vessel from a meltable casting material such as glass, said vessel having at least two walls spaced apart and joined together by a plurality of lateral webs, comprising:
- (a) a rigid hollow outer mold (11),
- (b) a first destructable hollow auxiliary mold form (12) disposed within the outer mold and in intimate contact therewith throughout, and
- (c) a second destructable hollow auxiliary mold form (14) disposed within said first auxiliary mold form but spaced therefrom to define an outer wall chamber therebetween,
- (d) said second auxiliary mold form having a plurality of lateral passages extending therethrough.
Dependencies are inferred from the claim text.