Rainbow Film Production Line
A multi-layer cast film line producing iridescent rainbow film for packaging, decoration and lamination.
RAL 5021 · semi-matt finish
Production line introduction
How the Rainbow Film Production Line is engineered, and which sub-assemblies protect the properties your customers actually buy.
A multi-layer cast film line producing iridescent rainbow film for packaging, decoration and lamination.
Every BENK line is matched to the material and product you actually sell. The extruder, die, calibration or forming section and the downstream automation are sized together, then assembled and trial run in our Zhangjiagang works before shipment, so the performance you see in the factory acceptance test is the performance you install. The machine frame is finished in RAL 5021 water blue with a semi-matt powder coating.
Technical Parameters of Rainbow Film Production Line
Reference values for the standard configuration. Final width, thickness, speed and output are confirmed against your material, product drawing and target capacity.
| Item | Specification |
|---|---|
| Material | PE, PET, PP based multilayer |
| Film width | 600 – 1600 mm |
| Thickness | 0.02 – 0.2 mm |
| Layers | 30 – 200 micro layers |
| Output | 150 – 400 kg/h |
| Winder | Automatic turret winder |
Need a model outside this table? Send us your sheet size, resin and target output — BENK will return a sized configuration with a budgetary price.
Production line technical advantages
Every sub-assembly below is selected to protect the properties your customers buy: transparency, gauge, strength and surface.
Precision cast film die
An internal deckle T-die with automatic or manual die bolt adjustment keeps gauge flat to the edge and reduces trim waste.
Multi-layer feed block
Co-extrusion feed blocks combine a functional skin with a cost optimized core in one pass.
Closed loop cooling
Chill rolls with closed loop temperature control fix surface quality, gloss and crystallinity.
Gauge feedback
An online thickness gauge with closed loop die control holds thickness within the tolerance fixed in the specification.
Automatic winding
Turret winding with tension taper control produces stable, wrinkle free rolls ready for the next process.
RAL 5021 finish
The machine frame is powder coated in RAL 5021 water blue with a semi-matt finish.
Production line advantages
- Precision cast film die — An internal deckle T-die with automatic or manual die bolt adjustment keeps gauge flat to the edge and reduces trim waste.
- Multi-layer feed block — Co-extrusion feed blocks combine a functional skin with a cost optimized core in one pass.
- Closed loop cooling — Chill rolls with closed loop temperature control fix surface quality, gloss and crystallinity.
- Gauge feedback — An online thickness gauge with closed loop die control holds thickness within the tolerance fixed in the specification.
Built to run
Material preparation, feeding, downstream handling and packing can be integrated into one turnkey scope.
Process flow
From raw material to finished pack, each station is matched in capacity so the line runs at the rated output without a bottleneck.
- Dosing & mixing
- Extrusion & filtration
- Melt pump
- T-die casting
- Chill roll cooling
- Thickness gauge
- Corona / treatment
- Winding
Wide applicability
Typical end uses for the material this line produces, based on the applications BENK equipment already serves worldwide.
Packaging and lamination
Functional and decorative film for flexible packaging and lamination.
Industrial and optical
Optical, protective and specialty film for electronic and industrial applications.
Glass and construction
Interlayer and surface film for laminated glass and construction products.
Options and auxiliary equipment
Configure the line for the market you sell into. Popular additions include:
- Multi-layer co-extrusion feed block
- Online thickness gauge with auto die control
- Corona treater and static eliminator
- Trim recycling back to the extruder
- Automatic roll handling and packing
- Recipe management on the PLC
Why buy from BENK Machinery
Extrusion specialists, not traders
BENK designs and builds extrusion lines in Zhangjiagang with an in-house R&D and process team, so machine selection is matched to your resin and product instead of a catalogue number.
Evidence before shipment
Every line is assembled and run in our works. You receive trial video, gauge and output records, and are welcome to attend the factory acceptance test.
Total cost, not lowest price
Energy-efficient drives, permanent magnet motors and optimized heating reduce kWh per tonne, which usually matters more over five years than the initial purchase price.
Real commissioning support
Our engineers install, commission, train your operators and stay involved until the line hits the specified output and quality on your material.
Spares and response
Critical spares are stocked for fast dispatch, and the Siemens Ethernet control platform allows remote diagnosis before a service visit is needed.
Upgrades as you grow
Co-extrusion, gauge control, automation and downstream equipment can be added later, protecting your original investment.
Frequently asked questions
The questions buyers ask most often about this film.
What thickness range can the line produce?
How is gauge controlled?
Is co-extrusion available?
Do you provide a trial run?
Get a quotation for the Rainbow Film Production Line
Tell us the material, sheet or film size, target output and the country the line will be installed in. We will reply with a sized configuration, a budgetary price and an indicative delivery time.
- Telephone
- +86 512 5896 1463
- Mobile / WhatsApp / WeChat
- +86 159 5096 2426
- kpm@benkpm.com
- Address
- No.20 Huatang Road, Economic Development Zone (South District), Zhangjiagang City, Jiangsu Province, China
Related extrusion lines
Zhangjiagang City BENK Machinery Co., Ltd. · www.benkpm.com · Plastic extrusion lines and extruders since 2004.