Patent ID: 6648029
Filing Date: 2003-11-18
Classification: B65B

Abstract:
A method of packing a container including a powder inlet and an air outlet with powder, said method comprising the steps of:(A) connecting a powder outlet of a hopper capable of storing the powder to the powder inlet, attaching a suction pipe to the air outlet, and then introducing said powder stored in said hopper into the container; and (B) discharging air existing between particles of the powder introduced into the container via said suction pipe to which vacuum is fed; wherein an end portion of said suction pipe to be positioned at least in the container after attachment to said container and constituting an air separating portion comprises a laminate of at least two filters including an intermediate layer sandwiched between inner and outer layers, the inner and outer layers having relatively large mesh size compared with the intermediate layer, each of the inner layer, the intermediate layer and the outer layer being cylindrical, the laminate of the at least two filters comprising a cylindrical filter which extends from the end portion of said suction pipe such that said end portion of said suction pipe does not extend inside of said cylindrical filter.