1. Bottom-Fill vs. Top-Fill Twist-Up Stick Architecture Matrix (15 g / 30 g / 50 g / 75 g)
| Engineering Parameter | 🏆 Vella Bottom-Fill Stick (Inverted Pour via Base Port) | 🏆 Vella Top-Fill Stick (Direct Open-Mouth Pour) | Generic Low-Precision Stick Container |
|---|---|---|---|
| Top Surface Aesthetics Upon Uncapping | Flawless Smooth Molded Dome / Flat Top (Formed against precision inner cap mold) | Natural meniscus (requires cooling-tunnel top-up or heat-gun smoothing) | Deep central cooling sink-hole (tunneling cavity) |
| Hot-Pour Temperature & Spindle Stability | Validated up to 62°C Pour Temp (Thick-wall homopolymer PP spindle resists warping) | Validated up to 65°C Pour Temp (With double-lip follower piston seal) | Spindle warps above 50°C; turning wheel jams or strips threads |
| Molten Wax/Oil Base Leakage Prevention | Snap-In Inner Dome Shive + Ultrasonic/Friction Base Plug | +0.25 mm Interference-Fit Wiper Fin on Elevator Platform | Molten oil leaks through screw hole onto turning dial |
| Cross-Section Shapes & Vella Pilot MOQ | Round (`Ø22–Ø48 mm`) & Oval (`15–75 g`) · Mono-Material PP or 30–50% PCR-PP · Stock MOQ ~500–1,000 pcs · Custom Pantone 3,000 pcs | 10,000+ pcs MOQ per mold | |
Request Physical Bottling & Pump Compatibility Sample Kit + 24h Tiered FOB Quote (48h DHL Dispatch)
Managed directly by Alex Gao (Managing Director, Vella · Guangzhou Yanchuang Packaging Co., Ltd. · USCC 91440111MA59DBE04B · [email protected] · WhatsApp +86 139 2512 2895). Low trial MOQs (~500–1,000 pcs stock, ~2,000–3,000 pcs custom Pantone with cross-component ΔE <= 1.5), -0.08 MPa vacuum leak testing, and 30/40/30 100% client mould ownership.