Here are the valve bags you can produce with Youniker's valve sack tuber and bottomer!
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Kraft valve sack
Kraft valve sacks are suitable for large particulate substances such as cement, corns and coffee beans. This kind of valve sack has no seal, therefore it is lower in cost.
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Film laminated paper valve bag
Film laminated paper valve bags has a film facing inside the valve, therefore the film will stick to the top of the bag to achieve sealing effect after filled out. Film laminated bags outstrip the kraft valve bags with better sealing effect, suitable for powdered substances.
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Hot-melt glue sealing paper valve bag
Hot-melt glue sealing paper valve bags has paper strip facing upward, which is lined a hot-melt film. The valve will be sealed after the bag is filled out, achieving good sealing effect, suitable for powdered substances.
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Ultrasonic sealing paper valve bag
The paper valve bag has an extended sleeve with hot-melt film lined, which will melt to achieve sealing by using ultrasonic sealer after filling. Ultrasonic sealing paper valve bag is brilliant in sealing, suitable for powdered substances.
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Kraft paper valve bag with thumb notch
Kraft paper valve bag with thumb notch has a semicircular notch on the valve, convenient for the workers to open the valve with thumbs while filling materials. The rest part of this paper bag is identical to kraft valve sacks.
