초록 ▼

The invention provides a process for packaging a product article such as meat, in a plastics bag (1) by injecting a hot gas, in this case steam, into the bag interior from behind the product article (2) using a nozzle (3) to flush air (at 5) from the bag (1) and to impart shrinking heat to the mater

The invention provides a process for packaging a product article such as meat, in a plastics bag (1) by injecting a hot gas, in this case steam, into the bag interior from behind the product article (2) using a nozzle (3) to flush air (at 5) from the bag (1) and to impart shrinking heat to the material forming the bag. When using steam, or another vapor capable of condensing at atmospheric pressure above room temperature, the condensing of the vapor effects evacuation of the bag interior.

대표청구항 ▼

A process for packaging comprising: (a) placing a product article in a heat shrinkable plastics bag having an opening and a closed end remote from the opening; (b) inserting a nozzle into the bag through the opening so that the nozzle extends approximately to the closed end; (c) flushing air from th

A process for packaging comprising: (a) placing a product article in a heat shrinkable plastics bag having an opening and a closed end remote from the opening; (b) inserting a nozzle into the bag through the opening so that the nozzle extends approximately to the closed end; (c) flushing air from the bag interior by injecting a hot gas into the bag interior so as to impart shrinking heat to the bag thereby (d) shrinking the region of the bag in contact with the discharging hot gas; (e) withdrawing the nozzle to cause the regions of the bag in contact with the discharging hot flushing medium to shrink progressively as the nozzle is withdrawn as the medium contacts the bag walls; and (f) sealing the bag to provide a heat-shrunk, at least substantially air-free, package.