Resilux 36g 28-400 Cosmo PET Preform

What this packaging is

A 28mm neck diameter and 400 Cosmo finish define the functional backbone of the 36g 28-400 Cosmo PET Preform, a cylindrical unblown component built for high-speed automated blow molding lines. The standardized neck finish slots into existing filling infrastructure without retooling, supporting a wide range of caps and closures across personal care and home care categories. Custom color matching is available with an eight-week lead time, giving brands room to differentiate at the bottle level. Made in the USA, this preform suits everything from shampoo and body wash to dish soap and surface cleaners.

Why brands choose this

• Drop-in compatibility with existing fill lines: The 28-400 neck finish is one of the most widely adopted standards in personal care and home care packaging, meaning this preform integrates with current capping and filling equipment without costly changeovers or line modifications.
• Blow-molded to your bottle spec: Because the preform ships unblown, brands retain full control over final bottle geometry and capacity — whether that's a slim hand soap dispenser or a high-volume shampoo format — without committing to a fixed mold upfront.
• USA manufacturing keeps timelines tight: Domestic production cuts international shipping delays and removes customs complexity, giving brand teams a more predictable path from order to production floor — especially valuable for fast-moving product launches across mass or professional channels.