The Newlong HS Series band heat sealer machine seals poly bags with or without gussets. The heat seal is fused by applying pressure through a series of compression rollers and immediately cooled by a "cool air" blower system. The HS series sealer provides a consistent, strong, 7mm wide band seal with quality appearance. A spring loaded quick change band promotes less maintenance and down time. The HS series is available in five models to meet a wide range of applications, and offers many add-ons for an additional cost.