Blown Film Technology & QC | US Industrial Standards
PE stretch film manufacturing process directly affects product performance and packaging efficiency. Advanced blown film technology can produce stretch film with >90% clarity and >500g puncture resistance.
| Process Parameter | Blown Film | Cast Film | Performance Comparison |
|---|---|---|---|
| Clarity | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | Blown film better |
| Stretch Rate | 250-300% | 200-250% | Blown 20% higher |
| Thickness Uniformity | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Cast more even |
| Production Cost | 1.0x | 1.2x | Blown more economical |
| Suitable Thickness | 12-25μm | 15-30μm | Cast for thick film |
Production Key Points:
Winding Technology
Constant tension winding, core straightness <0.1mm, edge alignment <1mm to prevent wrinkles.
Material Formula
70% LLDPE + 30% LDPE optimal ratio balances stretch and toughness. Add 5% mPE for puncture resistance.
Blown Film Process
Die temperature 190-210°C, blow-up ratio 2.5:1, frost line height 4-5 times die diameter. Thickness variation <8%.
Siliangdi remains committed to innovation, quality, and service. We will continue developing and producing more eco-friendly, high-performance packaging materials, striving to provide exceptional packaging solutions for more enterprises. Together, we enhance brand value and market competitiveness.
Contact Us for Custom Sizes & Private Label Options
Email：packing@siliangdi.com
Email：SLD@siliangdi.com
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