A single-chamber vacuum sealer (also called a single-cavity vacuum packaging machine) works by placing the entire product
bag inside one enclosed chamber. The lid closes, creating an airtight space. The vacuum pump then evacuates air from the
entire chamber — including the inside of the bag — and the built-in sealing bar heat-seals the bag mouth before atmosphere is
re-admitted.
How the Cycle Works (Step by Step):

1. Open lid → place product bag inside chamber
2. Position bag opening over the sealing bar
3. Close and latch lid
4. Pump evacuates chamber + bag simultaneously
5. Sealing bar heats and seals the bag mouth
6. Atmosphere re-enters chamber → lid can be opened
7. Remove sealed product → repeat
   Cycle Time: Typically 15–35 seconds per bag, depending on product volume and target vacuum level

Limitations:
One bag per cycle — output is sequential, not parallel
Chamber size limits maximum bag/product dimensions
Not suitable for very large or irregularly shaped products
YGPACK Single-Chamber Range: Available in chamber sizes from 320×400mm to 500×600mm, with vacuum levels up to -99
kPa and optional gas-flush (MAP) capability for modified atmosphere packaging