Patent ID: 9656774
Date: 2017-05-23
CPC Classifications: B29C,B31B,B65B,Y10T

Claim:
1. A sealing unit comprising a sealing jaw suspended in a socket via a suspension comprising a first spring arrangement and a second spring arrangement for selectively biasing the sealing jaw in a sealing direction, the suspension comprising a first state in which the first spring arrangement is rigidly attached to the socket and operable to apply a first biasing force onto the sealing jaw in the sealing direction while the second spring arrangement is prevented from applying a second biasing force onto the sealing jaw, and a second state in which the first spring arrangement is movably arranged to the socket so that the first biasing force of the first spring arrangement is not applied to the sealing jaw and the second spring arrangement is arranged to apply the second biasing force onto the sealing jaw in the sealing direction.