Wall Thickness: 8 layers (≈3.2 mm, high compressive strength, resistant to multiple injections)
Top Layer Thickness: 3 mm
Bottom Layer Thickness: 2 mm
Infill Density: 25% (balance between strength and material saving)
Infill Pattern: Recommended Grid
Layer Height: 0.2 mm
Preparation Materials
SOFT concentrate stock solution
PVC special color paste
Release agent (recommended: PTFE-based release agent; edible oil can also be used, but the release effect is not as good)
3D printed mold and jig
Tow SALTGATOR injection molding machines
A pair of M8 screws and nuts
Injection Molding Steps
Evenly spray release agent (release oil) on the mold surface.
Assemble the jig according to the exploded view.
<img src="https://vzyklpazwxemgkrpkblc.supabase.co/storage/v1/object/public/mold-images/1782095280451-9etx2f.jpg" alt="Two-color injection molding jig1)" width="400" />
<img src="https://vzyklpazwxemgkrpkblc.supabase.co/storage/v1/object/public/mold-images/1782095332819-26hax.jpg" alt="Two-color injection molding jig2)" width="400" />
3. Add an appropriate amount of PVC raw liquid and PVC-specific color paste into the two injection molding machines, and start heating at the same time.
After the heating is completed, first use the Two-color injection molding jig to secure the two devices, and then pour the heated PVC into the mold.(push the plunger until it can't go any further, and hold for 3-5 seconds to remove larger bubbles).
After injection, wait 6-8 minutes to allow the PVC soft gel to cool.
Once cooled, first pull out each core pin and open the mold, then demold. During demolding, slowly separate the soft gel from the mold to avoid damaging the model by excessive force.
Remove flash and excess soft gel formed at the vent and injection port.
