Consumer Packaging CAD: PET Bottles and Beauty Device Housings
Premium PET bottles, cosmetic dispensers, and beauty-device housings share the same early-phase risk: industrial design surfaces outpace manufacturable CAD. Blow molding, injection molding, and assembly snaps each impose different rules. This guide covers CAD practices for consumer packaging and handheld devices headed to production.
PET and Blow-Mold Considerations
PET bottles need uniform wall distribution, draft for blow cores, and base design for stability. Watch heel thickness and shoulder transitions — thin spots fail drop test; thick spots warp and add weight.
For custom PET shapes, coordinate with blow-mold vendor before freezing handle geometry — undercuts may require split molds or post-mold assembly.
Injection-Molded Closures and Devices
Closures need living hinges or multi-component overmolds — define material pairs and gate locations early. For rigid device housings paired with bottles, align parting lines so labels and seams read clean in photography.
Cosmetic A-surfaces: protect from gate vestige, ejector marks, and weld lines visible in gloss finishes.
Stack-Up with Pumps and Electronics
Beauty devices combine fluid path, pump retention, and battery isolation. Master section through pump, seals, and nozzle axis before polishing exterior surfaces.
Seal compression and torque on closure interfaces should appear on drawings with inspection criteria.
Handoff to Manufacturing
Release shrink-adjusted CAD, texture specs, color masters, and mold-ready DFM sign-off. Ohmframe helps consumer brands with product CAD, injection molding DFM, and AI-assisted pre-tooling review.