| 摘要 |
The invention is a sealing system and a method of operation thereof. A sealing system which forms spaced apart thermal seals along a moving at least one web ( 60 ) by contact of the moving the at least one web with heated portions ( 74 ) of sealing elements ( 56 ) mounted on a sealing wheel ( 50 ) during rotation in accordance with the invention includes seal forming elements ( 56 ) which peripherally contact the at least one web to form the thermal seals by heat transfer to the at least one web; and wherein each seal forming element has an outer section ( 62 ) on which is located at least one electrical heater ( 78 ), an inner section ( 64 ) which contacts the sealing wheel and an intermediate section ( 70 ) which includes thermal insulation ( 68 ) which insulates the outer section from the inner section. |
