Material Structure | Multi-layer laminate: Typically PET (outer for printability) / Metallized Film (barrier) / PE (inner sealant)
. The metallized layer is often aluminum coating (e.g., VMPET) for high barrier properties. |
Sealing & Construction | 3-side heat seal (≥5mm width) for leak-proof integrity
. Tri-seal design ensures strong seams. |
Barrier Performance | Moisture Barrier: WVTR (Water Vapor Transmission Rate) is typically low, e.g., <0.5 g/m²/day (ASTM E96)
. Oxygen Barrier: OTR (Oxygen Transmission Rate) is also low, e.g., <0.5 cm³/m²/day·atm (ASTM D3985)
. UV Protection: Blocks >99% UV light (280–400nm)
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Metallized Coating | Aluminum coating (e.g., vacuum metallized PET or VMPET) provides excellent light and gas barrier
. It is more flexible and cost-effective than full aluminum foil
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Printing & Customization | Supports high-definition rotogravure printing
. Customizable elements: logos, QR codes, batch dates, product information
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Physical Durability | Puncture & Tear Resistant
. Seal strength: Typically **≥25 N/15mm** (ASTM F88)
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Dimensions & Capacity | Bag Width: Customizable (common range: 50–200 mm for floss packages)
. Load Capacity: Suitable for various quantities of dental floss (e.g., 10–100 units). |
Compliance & Safety | Food Safety: Complies with FDA 21 CFR and EU 10/2011 for food contact
. Heavy Metals: Typically <0.1ppm (RoHS compliant)
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Production & Logistics | MOQ: 5,000–10,000 pieces (custom designs)
. Packaging Format: Rolls of 50–100 bags/pallet. Lead Time: 15–25 days (FOB Shenzhen/Qingdao)
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