HEAT SEAL APPARATUS, BAG MACHINE, BAG EDGE FORMING APPARATUS, AND BAG SEAL MACHINE HAVING REPOSITIONABLE SEAL BAR ANVIL
摘要
An apparatus is provided for forming bag edges in a layered plastic film. The apparatus includes a heated seal bar and a seal bar anvil. The seal bar anvil has a resilient tube configured to deform as the seal bar is driven into the tube to seal and sever a bag edge therebetween. According to one construction, the resilient tube is pressurized pneumatically from the inside so as to impart a specific, desired resilience to the tube as the tube and seal bar co-act on either side of the layered plastic film.
申请公布号
WO2004113178(A3)
申请公布日期
2005.08.25
申请号
WO2004US19376
申请日期
2004.06.16
申请人
IRWIN, JERE, F.;VANTREASE, DALE, L.;HOOVER, GALEN, H., III