Precision ground blade on both sides for tighter packing chamber sealing. Sealing face of the gate is lapped to provide the best possible seat tightness.
两侧都经过精密光亮磨光的刀片确保填料腔的气密性密封。闸板的密封面经过研磨，以提供最好的阀座密封性。
2
The gate is guided by the seat, extending the sealing life of the packing.
闸板由阀座引导，可以延长填料的密封寿命。
3
The technics process of the double-aluminium foil for filling and heat-sealingpacking machine was analysed, and the control system was designed.