- polyethylene freezer bags (thickness: from 2mil – 0.05mm to 3.5mil – 0.09mm) Buy(Japan)
- air connector (outside pie 1.5mm) Buy(Japan)
- double-sided adhesive tape (Strong Type)
- adhesive tape
Tools and Equipment
- syringe Buy(Japan)
- air tube (inner pie 2mm) Buy(Japan)
- heat sealer Buy(Japan)
- awl (Toothpick also available)
- fine tip marker pen
1Trace a pattern
Put a film on a printed pattern and trace the shape with crosses or dots with a pen.
Cut a pair of films bigger than the pattern.
Adjust a timer dial of a heat sealer to the lowest setting that will still seal the films (maybe around 2.5).
Seal ONLY the outer lines of the pattern. Do NOT seal partition lines with a small gap. Place a pair of films on the sealer. Adjust the position to make sure that the crosses/dots are on the sealing line. Push the sealing arm down and keep the arm down for 3-4 seconds.
Repeat the sealing process to make a big square outline.
4Make partition seals
You can make a gap in the middle of sealing line with a paper board tape. Put a narrow paper board on the sealer, then make a partition lines on the inside of the pouch. The gap become tunnels between subdivided pouches.
5Cut a Pouch
Cut the margin of the films along the outline of the pouch.
6Make a Hole
Make a cross/dot to mark the position of an air inlet hole with a pen. Fold the films crosswise around the mark. Cut a VERY small piece off from the corner of the films with a scissors.
Unfold the films to check the hole. The diameter of the hole must be around 1-2mm. If it’s too big, cover the hole with a tape and try again on the other side.
8Prepare a Connector
Apply a both-sided tape on the bottom of a connector. Make a through hole with an awl.
9Put the connector on the pouch
Fix the connector on the hole of the pouch.
10Cover the flip side
Cover the another hole on the flip side with a tape.