초록 ▼

In a method for packing of powder formed goods in a container which is hermetically sealable under vacuum, a container blank is formed into an open topped container and a predetermined amount of powder formed product is deposited into the container. The product is slightly compacted by a piston whic

In a method for packing of powder formed goods in a container which is hermetically sealable under vacuum, a container blank is formed into an open topped container and a predetermined amount of powder formed product is deposited into the container. The product is slightly compacted by a piston which moves relatively slowly down into the container and presses the product at a relatively low pressure, the piston being then removed. In a second step, the product is compressed by a piston at a relatively high pressure so that the surface of the product is compressed to a level which is below the intended final level of the container. Thereafter the product is subjected to a relatively slight compression by means of a piston which, with a relatively low pressure, is pressed onto the surface of the product. In this third compression step, the relatively low pressure may be followed by a momentary thrust of the piston at a higher pressure. Thereafter the container and the compressed product are subjected to vacuum, and the container is sealed hermetically under vacuum.

대표청구항 ▼

A method for packing of powder formed goods in a container which can be sealed hermetically under vacuum, comprising forming a container which is open at the top, filling the container with a predetermined amount of powder formed goods, slightly compacting the goods in a first compression step by mo

A method for packing of powder formed goods in a container which can be sealed hermetically under vacuum, comprising forming a container which is open at the top, filling the container with a predetermined amount of powder formed goods, slightly compacting the goods in a first compression step by moving a piston relatively slowly down into the container and pressing onto the surface of the goods with a relatively low pressure, removing the piston, pressing a piston to the surface of the slightly compacted goods with a relatively high pressure in a second compression step so as to compress the goods to a level below the intended final level of the container, removing the piston, slightly compressing the surface of the goods in a third compression step by moving a piston down into the container and with a relatively low pressure against the surface of the goods which may have been restructured after the relatively strong second compression step, removing the piston, subjecting the container and product to a vacuum, and sealing the container hermetically under vacuum.