¿Qué factores afectarán el efecto de termosellado de la máquina para fabricar bolsas con válvula?
The valve pocket bag making machine can bond the bottom by heat sealing and gluing. En el presente, the heat sealing process is widely used in the market. Many factors will affect the heat sealing effect of the valve bag. Factors will affect the heat sealing effect of valve bag making machine! Factors affecting the heat sealing […]