What Is the Difference Between Cast and Blown Stretch Film?
Introduction
When it comes to securing loads for shipping and storage, stretch film is a must-have packaging material. However, not all stretch films are made the same. Two of the most common types are cast stretch film and blown stretch film. But what is the difference between cast and blown stretch film, and how do you decide which one is right for your business?
What Is Cast Stretch Film?
Cast stretch film, also known as cast wrap, is manufactured using the cast extrusion process, where melted resin is pumped through a flat die onto chilled rollers. This cooling method creates a film with excellent clarity, smooth texture, and consistent thickness.
Key Features of Cast Stretch Film
High transparency – allows easy barcode scanning and product identification.
Quiet unwinding – comes off rolls smoothly, making it easier for workers to handle.
Excellent stretchability – provides strong load retention with less force.
Cost-effective – typically less expensive due to faster production speed.
At Huasu Packaging, our cast stretch films are produced with advanced five-layer co-extrusion cast equipment, ensuring uniform thickness, excellent stretch ratio, and high clarity for professional packaging applications.
What Is Blown Stretch Film?
Blown stretch film is made using the blown extrusion process, where melted resin is extruded through a circular die and inflated into a bubble, then cooled by air. This process creates a tougher film with greater durability.
Key Features of Blown Stretch Film
Superior strength and tear resistance – ideal for heavy or irregular loads.
Strong cling on both sides – ensures secure pallet wrapping.
Excellent puncture resistance – resists sharp edges and rough handling.
Cloudy appearance – less clarity compared to cast film.
Huasu’s blown stretch film is designed for high-performance packaging, delivering maximum load stability and durability even in demanding export and logistics environments.
Cast vs. Blown Stretch Film: A Comparison
| Feature | Cast Stretch Film | Blown Stretch Film |
|---|---|---|
| Clarity | High transparency | Cloudy/opaque |
| Noise Level | Quiet unwinding | Noisy during application |
| Strength | Moderate strength | High strength & puncture resistance |
| Cost | Lower cost | Higher cost |
| Best Use | Light to medium loads | Heavy, irregular, or long-distance loads |
Which Stretch Film Should You Choose?
The choice between cast stretch film and blown stretch film depends on your packaging needs:
If you need cost-efficient, clear, and easy-to-use film for standard loads → choose cast stretch film.
If you need durable, heavy-duty film that withstands rough handling and long shipping → choose blown stretch film.
At Huasu Packaging, we offer both cast and blown stretch films, ensuring that our global customers can find the perfect solution for their packaging requirements.
Why Choose Huasu Stretch Film?
Founded in 1993, Huasu Packaging has over 30 years of experience in producing high-performance packaging films. Our advantages include:
Advanced technology: Eight production lines including five-layer co-extrusion cast film and high-tech extrusion equipment.
Premium raw materials: Imported from Japan and the USA for superior durability.
Custom solutions: Wide variety of film sizes, thicknesses, and stretch ratios available.
Strong export capability: Trusted by international customers in food, logistics, and manufacturing.
By combining innovation, quality, and cost-effectiveness, Huasu ensures that every roll of stretch film meets the highest standards of performance.
Conclusion: Cast or Blown – Which Is Better for You?
The main difference between cast and blown stretch film lies in their manufacturing process, strength, and clarity. Both play an essential role in protecting goods during transport, and the right choice depends on your specific load type and budget.
Explore our full range of stretch film at Huasu Packaging and find the best solution for your packaging needs.
Request a Quote: Click here to request a quote or sample
Contact Us: Email us at zhugeorge158@gmail.com for more information or inquiries.
WhatsApp: +86 158 5363 5022
Visit Our Website: Explore our full range of packaging products on www.huasupackaging.com .
