Clear Shrink Label Film

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Description

Technical Parameters

Clear Shrink Label Film is a high-transparency substrate manufactured for conversion into full-body shrink sleeves, partial container labels, and tamper-evident neck bands. Compatible with glass, PET, HDPE, and aluminum containers, this film enables 360-degree print coverage while retaining optical transparency on unprinted bottle areas. The film forms a continuous exterior layer that covers surface graphics against moisture, scuffing, and handling abrasion during distribution. Label converters select this roll-stock substrate to process contoured sleeve packaging across high-speed automatic application lines without compromising web handling stability.

Key Features

01/

Low-Haze Optical Base: Formulated with a haze value of ≤ 2.5%, providing visible clarity for clear container window designs and "no-label" visual presentation.

02/

Controlled Shrink Kinetics: Features up to 78% transverse direction (TD) shrinkage with minimal machine direction (MD) shrinkage (0%–3%), matching complex bottle contours while limiting vertical graphic distortion.

03/

Gauge Uniformity Control: Manufactured with tight thickness tolerances (±5%), preventing web misalignment during high-speed solvent seaming and automated sleeve application.

04/

Surface Energy for Printing: Treated to maintain a surface tension level of ≥ 42 dynes/cm, supporting ink adhesion for gravure, flexographic, and digital UV printing processes.

05/

Tensile Strength Profile: Exhibits balanced mechanical strength to withstand web tension during slitting, printing, and automated sleeving operations.

Applications

Beverage Containers: Full-body shrink sleeves applied to contoured juice, dairy, sports drink, and spirits bottles.

Personal Care Packaging: Contoured lotion, shampoo, and liquid soap bottles featuring transparent graphics and product-level viewing windows.

Pharmaceuticals & Nutraceuticals: Tamper-evident seals and neck bands applied to cap closures and pill bottles.

Household Chemical Products: Full-coverage sleeve labels for detergent bottles and liquid chemical containers requiring surface chemical resistance.

Materials & Specifications

Parameter	Specification / Test Standard
Substrate Material Options	PETG / PVC / OPS
Thickness Range	30 µm – 50 µm (Custom gauges subject to technical confirmation)
Thickness Tolerance	± 5%
TD Shrinkage Rate	PETG: 70% – 78% / PVC: 55% – 65% / OPS: 70% – 80% (Tested at 95°C water bath / 10s)
MD Shrinkage Rate	0% – 3%
Haze Value	≤ 2.5% (ASTM D1003)
Luminous Transmittance	≥ 92% (ASTM D1003)
Surface Tension (Corona Treated)	≥ 42 dynes/cm (ASTM D2578)
Coefficient of Friction (COF)	Static: 0.20 – 0.35 / Dynamic: 0.18 – 0.30 (ASTM D1894)
Core Inner Diameter	3 inches (76 mm) / 6 inches (152 mm)
Slit Width Range	250 mm – 1300 mm

How to Choose

To select the appropriate clear shrink label film grade, provide the following production parameters for technical evaluation:

Container Contour Geometry:

Supply container CAD drawings or maximum-to-minimum diameter ratios to determine the required TD shrink percentage.

Application Equipment:

Specify tunnel configuration (steam, hot air, or radiant heat) and target application line speed (bottles per minute).

Printing & Converting Method:

Indicate ink chemistry (UV flexo, gravure, or digital) and seaming solvent formulation.

Roll & Web Specifications:

Define target slit width, roll outer diameter, core size, and unwinding direction required for your slitting and sleeving machinery.

FAQ

Q: How do substrate material properties differ between PETG, PVC, and OPS shrink films?

A: PETG delivers the highest TD shrink capacity (up to 78%) for steep container curves, along with high mechanical strength. PVC provides stable shrinkage characteristics (up to 65%) with low thermal onset requirements for moderate container profiles. OPS provides a low density material profile with minimal MD shrink tension, suited for squeeze bottles and thin-walled containers.

Q: What factors prevent graphic distortion during shrink tunnel passage?

A: Graphic distortion is managed by matching the film's TD/MD shrinkage curve to container geometry and tunnel heat exposure. Maintaining MD shrinkage within 0%–3% limits vertical distortion, while uniform heating profile settings prevent localized uneven shrinkage during steam or hot-air passage.

Q: What technical information is required to issue a product specification sheet and quotation?

A: Provide the required base polymer (PETG/PVC/OPS), nominal film gauge (µm), slit web width (mm), target TD shrink percentage, core diameter, total order volume (kg or m²), and destination port details.

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