Cailong

What Is VMBOPP-GZ?

High Barrier BOPP Metallized Film VMBOPP-GZ​ is a vacuum-metallized biaxially oriented polypropylene film engineered for ultra-low oxygen and moisture transmission. Built on an 18 μm BOPP substrate with a dense aluminum layer (OD ≥ 2.3, aluminum layer thickness ~1.2 Ω/□), it delivers barrier performance close to VMPET while keeping the PP-homogenous​ advantage—meaning it can serve as the middle layer in a three-layer PP/PP/PP structure for easier mono-material recycling.

Typical structure (inside → out):

BOPP base / surface treatment (seed or coating) / vacuum Al layer

Why "High Barrier" Matters — Key Performance Highlights

Data source: Cailong VMBOPP-GZ product sheet. The differentiator:​ Most standard metallized BOPP sits at OTR ~1–3 range. VMBOPP-GZ pushes into the sub-0.5 zone, making it viable as a VMPET / thin aluminum foil replacement without switching substrate family.

4 Reasons Buyers Switch to VMBOPP-GZ

1. Replaces VMPET or Aluminum Foil — With Better Processability

VMPET is PET-based (non-PP), which breaks mono-material recycling. Aluminum foil is stiff, pinhole-prone, and expensive. VMBOPP-GZ sits in the middle: BOPP stiffness + metallized barrier + PP-homogenous laminate.

2. Strong Aluminum Layer Adhesion = Higher Composite Strength

EAA-side aluminum adhesion reaches 3.5 N/15mm, well above the ≥2.0–3.0 N/15mm typical range of general-grade VMOPP. This matters when the film is laminated to PET or PE in high-speed lines.

3. Light-Blocking for Shelf-Life Extension

The metallized layer blocks 100% visible light + UV, critical for:

• Roasted coffee / ground spices (volatile loss)
• Chocolate (fat bloom under light)
• Pharmaceuticals (photo-sensitive actives)

4. Regulatory & Sustainability Compliance

Material conforms to FDA, EU, REACH, RoHS, GB 4806.7​ food-contact requirements, and keeps BOPP's recyclability path open.

VMBOPP-GZ vs VMPET vs Aluminum Foil (Quick Compare)

Reference: Cailong VMBOPP-GZ data+ general VMCPP/VMPET/AL comparison.

Typical Applications

VMBOPP-GZ is positioned as the middle barrier layer​ in 3-ply flexible packs:

• Dry foods​ — nuts, dried fruit, instant oats
• Aroma-sensitive​ — tea, ground coffee, cocoa powder
• Chocolate & confectionery​ (UV protection)
• Dehydrated ingredients & spice blends
• Pharma / nutraceutical sachets​ (moisture + light barrier)

It is not heat-sealable on its own—same as VMPET—so it's normally laminated to CPP or PE for the seal layer.

Full Technical Data Sheet (18 μm VMBOPP-GZ)

Data from internal testing; final performance depends on lamination/adhesive process. Store below 30°C, ~50% RH.

FAQ

Q: Can VMBOPP-GZ replace VMPET directly in an existing structure?​

A: In many dry / medium-barrier applications, yes—especially where brand owners want a PP-monomaterial story. For very high-moisture items, verify WVTR against your shelf-life target.

Q: Does it seal by itself?​

A: No. Like VMPET, it needs a sealant layer (CPP / PE) in the laminate.

Q: What widths / lengths are available?​

A: Base gauge 18 μm standard; 12–50 μm and slit widths customizable per order.

Q: Any compliance docs available?​

A: Yes—FDA, EU, REACH, RoHS, GB 4806.7 declarations are standard from the supplier.

Conclusion & CTA

If your current laminate uses VMPET or thin aluminum foil and you're exploring a recyclable PP-homogenous route​ without giving up barrier, VMBOPP-GZ​ is the spec to request. OTR 0.12 / WVTR 0.28 / EAA adhesion 3.5 N/15mm puts it in a small group of metallized BOPPs that can actually step up.