Clear Vacuum Packaging Roll Film
Description
Technical Parameters
Clear vacuum packaging roll film is a multi-layer flexible material supplied in continuous roll format for automated form-fill-seal and thermoforming packaging systems. Designed to operate as either a thermoformable bottom web or a flat lidding film, it creates hermetic vacuum seals that isolate perishable contents from environmental exposure. The highly transparent structure maintains product visual inspection while providing mechanical protection and barrier performance during transit and storage.
Key Features
High Optical Clarity: Formulated with high-purity resin layers to deliver low-haze optical performance, enabling clear visual inspection of contents without opening the package.
Continuous Rollstock Feeding: Engineered with controlled coefficient of friction (COF) and surface tension for flat, smooth tracking on high-speed thermoforming and packaging lines.
Broad Heat-Sealing Window: Features a sealing layer adaptable to wide temperature ranges, forming reliable hermetic seals even across seal area contamination like oils or moisture.
Multi-Layer Puncture Resistance: Combines tough outer protective layers with flexible inner sealants to resist tears and punctures during deep vacuum drawing and handling.
Applications
Fresh and Processed Meat: Formed pouches and lidding for primal cuts, sliced meats, sausages, and poultry.
Dairy and Portion Packs: Thermoformed vacuum packaging for block cheese, sliced cheese, and butter.
Seafood and Fish Fillets: Vacuum sealing for whole fish, fresh fillets, and frozen seafood products.
Industrial and Sterile Supplies: Protective dust-proof and moisture-proof packaging for precision components, hardware, and medical accessories.
Materials & Specifications
|
Technical Parameter |
Standard Range / Specification |
Verification / Technical Standard |
|
Film Structure Options |
PA/PE, PA/PE/EVOH/PE, PE Co-extruded |
Co-extrusion / Lamination |
|
Thickness Range |
50 micron – 200 micron (2.0 mil – 8.0 mil) |
ASTM D374 (±5% tolerance) |
|
Roll Width |
100 mm – 1600 mm |
Custom slitting precision ±1 mm |
|
Optical Properties |
High gloss / Anti-fog options available |
ASTM D1003 Haze testing |
|
Core Inner Diameter |
76 mm (3 in) or 152 mm (6 in) |
Heavy-duty paper or plastic core |
|
Max Roll Outer Diameter |
Up to 600 mm |
Compatible with standard unwinding unwinds |
|
Oxygen Transmission Rate (OTR) |
Configurable based on EVOH barrier layer content |
ASTM D3985 testing standard |
|
Water Vapor Transmission Rate (WVTR) |
Moisture barrier determined by PE layer density |
ASTM F1249 testing standard |
How to Choose
To determine the correct film specification, prepare the following details before requesting a technical quote or sample roll:
Packaging Machine Setup:
Machine make/model, unwinding shaft width, core diameter, and maximum allowable roll diameter.
Product Characteristics:
Dimensions, weight, state (fresh, frozen, liquid, sharp edges), and required shelf life.
Barrier Requirements:
Target OTR/WVTR levels based on oxygen or moisture sensitivity.
Current Operational Baseline:
Current film structure, thickness, roll width, and any performance issues experienced on your line.
FAQ
Q: How does EVOH integration affect the oxygen barrier performance of clear vacuum roll film?
A: Integrating an EVOH layer into the multi-layer co-extrusion significantly lowers the Oxygen Transmission Rate (OTR), preventing oxidation, discoloration, and spoilage in oxygen-sensitive food products without compromising film transparency.
Q: What roll dimensions are necessary to ensure machine compatibility?
A: Compatibility requires matching three main physical specifications: exact slitted film width, inner core size (3-inch or 6-inch), and maximum outer roll diameter allowed by the unwinding stand of your packaging equipment.
Q: What information is required to receive trial samples for factory line testing?
A: Provide your packaging equipment specifications, target film thickness, width, core size, and the nature of the product being packaged so trial rolls can be configured to match your mechanical tension and heat-sealing settings.
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