Biaxially Oriented Polyethylene Film
- Material: Biaxially oriented polyethylene
- Appearance: Clear or high-gloss
- Typical thickness: 18-40 um, grade dependent
- Width: Master rolls and custom slit rolls
- Surface treatment: One-side or two-side corona treatment
- Grade options: Printing, laminating, sealable or non-sealable
Films Protective Company is a manufacturer of biaxially oriented polyethylene film, also known as BOPE film, for printing, lamination and mono-PE flexible packaging structures. The film is stretched in both the machine direction and cross direction, giving the web balanced clarity, stiffness and dimensional stability. Thickness, treated-side position, COF and sealing behavior are selected around the laminate design, converting process and packaging-line conditions.
Product Overview
Biaxially oriented polyethylene film is developed for PE-based structures that need stable MD/CD behavior, flatness and clean optical appearance. Because the web is oriented in two directions, tensile response, elongation and thermal shrinkage should be reviewed in both MD and CD. This supports print registration and laminate uniformity during printing, lamination and pouch making. Biaxially oriented polyethylene film is used as a printable outer web, lamination layer or selected sealable layer in PE-based flexible packaging structures.To determine when biaxial orientation is more appropriate than standard or machine-direction-oriented film, compare the main polyethylene film processing and orientation types. The BOPE page can then explain its own MD/CD, optical and surface-treatment parameters.
A high clarity PE film grade should not be approved by appearance alone. Haze, gloss, thickness consistency, roll flatness and reel-edge quality should be checked together. Typical clear-grade references may include 4%-6% haze and gloss of >=86 at 45 degrees, with values varying by grade. For extra stiffness, an oriented high density polyethylene film grade or a higher-HDPE BOPE blend can be evaluated during a sample trial. Retain the approved sample with roll width, slit-edge condition, treated-side position, winding direction and confirmed line settings.
Benefits
- Balanced MD/CD performance supports print registration and laminate flatness.
- High transparency, low haze and controlled gloss improve product presentation.
- Corona-treated grades support ink anchorage, coating and adhesive wetting.
- Controlled COF improves unwinding, web tracking and packaging-line feeding.
- PE-based structures can reduce dissimilar layers in suitable laminates.
- Thickness, width, treatment side and winding direction can be confirmed before production.
When Should BOPE Film Be Selected for a Mono-PE Flexible Packaging Structure?
BOPE film is practical when a package needs a printable outer web or lamination layer while remaining primarily PE-based. Its biaxial orientation helps preserve clarity and two-direction stability through printing, lamination and pouch making. A finished package should only be described as a 100% recyclable PE film structure after the sealant, coating, ink, adhesive and barrier components have been reviewed together. Confirm the complete package through an actual packaging-line trial.
TDS / Technical Data Sheet
Item | Typical Value |
Material | Biaxially oriented polyethylene |
Film structure | Clear mono-layer or multi-layer PE-based grade |
Thickness | 18-40 um, confirm by application |
Width | Custom slit width or master roll |
Thickness deviation | Confirm by agreed sampling plan |
Haze | Typical clear-grade reference: 4%-6% |
Gloss | Typical clear-grade reference: >=86 at 45 degrees |
Tensile strength | Record MD and CD values separately |
Elongation at break | Record MD and CD values separately |
Thermal shrinkage | Record MD and CD values at agreed temperature and time |
Dynamic COF | Typical reference: 0.20 +/- 0.05, grade dependent |
Surface treatment | One-side or two-side corona treatment |
Dyne level | Typical treated-surface reference: >=38 dynes/cm |
Sealable grade | Confirm seal strength and sealing initiation temperature by grade |
Winding direction | Confirm treated side and printable side before production |
Trial checks | Haze, tensile, shrinkage, COF, flatness, ink adhesion and lamination stability |
Applications
- Printed outer web for mono-PE flexible packaging
- PE-based pouch and refill-pack laminates
- Snack, dry-food, frozen-food and pet-food packaging
- Transparent packaging windows
- Heat-sealable BOPE structures
- HFFS and VFFS packaging-line trials
How Should Biaxially Oriented Polyethylene Film Be Verified Before Printing and Lamination?
Before routine production, run a sample roll under the intended converting conditions. Check haze, gloss, thickness consistency, MD/CD tensile strength, MD/CD thermal shrinkage and the coefficient of friction for the selected polyethylene film grade. Review dynamic COF against a typical reference of 0.20 +/- 0.05 and the treated surface against >=38 dynes/cm. Confirm whether the printable side faces inward or outward.
After unsuitable storage, allow rolls to stabilize before high-speed converting and recheck dyne level, haze and slip behavior. During the trial, observe web tracking, print registration, ink adhesion, adhesive wetting, roll flatness and laminate appearance. Keep the approved sample, lot identification and line-trial settings for repeat orders.
FAQ
What is BOPE film used for?
Biaxially oriented polyethylene film is used as a printable outer web, lamination layer or selected sealable layer in PE-based flexible packaging structures.
Can BOPE film support a recyclable mono-PE laminate?
Yes. The sealant, coating, ink, adhesive, barrier components and final package format still need review.
Should a sealable or non-sealable BOPE grade be selected?
Choose a sealable grade when the film contributes to sealing. Use a non-sealable grade when it mainly provides printability, stiffness or lamination stability.
Which records should be retained for repeat orders?
Keep the approved sample, thickness range, treated-side record, haze, tensile, shrinkage and COF results, roll format, lot identification and line-trial notes.
