Cailong

If you're sourcing a heat-sealable barrier film​ that combines high gloss, excellent moisture protection, and low-temperature sealing, Vacuum Metallized CPP (VMCPP)​ is a go-to choice for snack, confectionery, and dry food packaging.

Manufactured by Foshan Cailong Metallic Packing Material Co., Ltd.​ , VMCPP is a cast polypropylene film coated with a dense aluminum layer via vacuum evaporation. It serves both as a standalone wrapping film​ and as the inner sealant layer​ in multi-laminates.

What Makes VMCPP Different from Other Metallized Films?

Key takeaway:​ Choose VMCPP when you need a one-film solution​ that prints, seals, and barriers in a single structure — especially for pillow bags or inner liners where heat-sealing is mandatory.

Technical Specifications (Based on Cailong Datasheet)

Note:​ OTR is not listed in the standard datasheet — VMCPP is primarily chosen for moisture barrier​ rather than extreme oxygen barrier. For ultra-low OTR requirements, pair with VMPET or high-barrier VMBOPP.

Key Advantages of Cailong VMCPP

Excellent Moisture Barrier

With WVTR values as low as 2.0 g/m²·24h (30 µm), VMCPP effectively protects hygroscopic products like biscuits, crackers, and instant noodles from humidity-induced softening.

Strong Aluminum Adhesion

Aluminum adhesion is controlled at ≤2%​ (peel test), meaning the metallized layer stays intact during lamination, slitting, and pouch forming — less flaking, fewer rejects.

Low-Temperature Sealing at 120°C

Heat seal initiation at 120°C​ allows faster packaging line speeds and reduces thermal damage to heat-sensitive contents (chocolate, wafers).

High Gloss & Premium Look

The vacuum-deposited aluminum gives a bright, mirror-like finish that enhances shelf appeal — perfect for candy wrappers and premium snack bags.

Good Machinability

COF on the non-aluminum side is ≤0.65, ensuring smooth feeding on vertical form-fill-seal (VFFS) machines without sticking.

Typical Applications

• Biscuits & crackers​ — moisture barrier + heat seal
• Candy & chocolate​ — low-temp sealing preserves temper
• Tea & coffee​ — aroma retention with metallic barrier
• Popcorn & instant noodles​ — inner liner for composite bags
• Dried fruits & nuts​ — prevents rancidity from moisture ingress

Processing Guidelines

• Printing:​ Corona treat the non-metallized side (surface tension ≥36 mN/m); use solvent-based or water-based inks suitable for PP
• Lamination:​ Can be laminated to BOPP, PET, or paper using PU adhesive; maintain curing temperature ≤50°C to avoid aluminum shift
• Slitting:​ Recommended slitting angle 30–45°, razor or shear cut

Compliance & Certifications

Cailong VMCPP meets:

• GB 4806.7​ (China food contact)
• FDA 21 CFR 177.1520​ (olefin polymers)
• EU 10/2011​ (plastic materials intended to come into contact with food)
• REACH & RoHS​ compliant

FAQ

Q: Can VMCPP replace VMPET in a laminate?​

A: Only if you need heat-seal capability and moderate moisture barrier. For high oxygen barrier, keep VMPET as the middle layer and use VMCPP as the sealant.

Q: What is the maximum width available?​

A: Cailong supplies VMCPP in widths from 20 mm to 2500 mm, with roll lengths up to 36,000 m.

Q: Is VMCPP recyclable?​

A: As a polypropylene-based film, it is technically recyclable in PP streams, though the aluminum coating may complicate separation. Check local recycling guidelines.

Q: How does the aluminum adhesion compare to competitors?​

A: Cailong controls adhesion to ≤2% peel residue, which is tighter than the industry typical ≤5–10% threshold, ensuring cleaner lamination.

Conclusion & Call to Action

Whether you're packing cookies, chocolates, or instant noodles, Vacuum Metallized CPP Film (VMCPP)​ from Cailong delivers consistent moisture barrier, reliable heat seals, and a brilliant metallic look — all in one film.