ABC Three Layer Co-Extrusion Film Blowing Machine for Packaging Film Production

Applications

This ABC three-layer co-extrusion film blowing machine produces high-performance multi-layer packaging film from LDPE, LLDPE, mLLDPE, HDPE, and EVA in independently controlled layer combinations. Equipped with a 355mm die head, IBC internal bubble cooling, and servo-driven automation, it produces film from 20 to 150 microns at lay-flat widths up to 2500 mm. Converters supplying food packaging, heavy-duty shrink film, lamination-grade film, and industrial packaging run this machine for three-layer structures where independent control of skin layers and core layer directly determines film performance and material cost.

• Food-grade packaging film: Three-layer structures with mLLDPE seal layer (inner), LDPE/LLDPE core for strength, and HDPE outer for stiffness and heat resistance — produced at 800-2000 mm width for form-fill-seal and lamination applications.

• Heavy-duty shrink film: Multi-layer shrink film with optimized shrink percentages per layer — LLDPE core for puncture resistance, LDPE skins for controlled shrink ratio, enabling pallet-wrap and industrial shrink applications.

• Lamination-grade base film: Surface-treated three-layer film for subsequent printing and lamination — corona-treated outer layer with consistent dyne level above 40 mN/m for ink and adhesive bonding.

• High-clarity display packaging: mLLDPE-rich structures for transparent retail packaging where film optics and seal integrity are both critical.

Application vs. Recommended Layer Structure

Who This Machine Is For

• Medium-to-large packaging film converters producing 1500+ tons per year who need independent layer control for film structures where skin-layer material cost and core-layer strength requirements diverge. The ABC configuration allows a premium seal-layer polymer (mLLDPE, EVA) in the inner skin while the core uses standard LLDPE — reducing raw material cost by 15-25% compared to a monolayer film with the same seal performance.

• Producers running multiple film structures on one line — food packaging in the morning, shrink film in the afternoon, lamination film on night shift. Each extruder has independent temperature zones and dedicated screw geometry (55mm skins for flexibility, 60mm core for throughput). Recipe switching is an HMI selection, not a hardware changeover.

• Manufacturers supplying lamination and printing converters where film surface quality, gauge uniformity, and roll flatness directly affect downstream yield. The servo-driven system with oscillating haul-off and automatic tension control produces rolls that unwind smoothly through high-speed printing presses and lamination lines.

• Shops replacing aging monolayer or two-layer lines to access three-layer film markets. One ABC line at 355mm die producing 120-200 kg/h replaces 2-3 older machines — with better gauge control, lower energy per kg, and the ability to quote on three-layer film contracts that monolayer lines cannot bid on.

Who Should NOT Buy This Machine

• Producers running exclusively monolayer film with no plan to enter multi-layer markets. A dedicated high-speed monolayer line costs less and runs faster for single-polymer film. If your customers only buy mono-layer film, the ABC premium does not pay back. See our high-speed monolayer machines.

• Shops producing under 800 tons of film per year. The ABC configuration's minimum economic throughput is roughly 100 kg/h — below that, a two-layer ABA line with lower capital cost reaches payback faster at lower volume.

• Converters who only produce thick-gauge geomembrane or construction film (above 200 microns). While the 60mm core extruder and 355mm die can run heavy gauge, this machine is optimized for packaging-gauge film (20-150 microns) where layer differentiation and surface quality matter. For dedicated heavy-gauge production, a specialized wide-web line is more cost-effective.

• Startups without in-house blown film technical capability. Three-extruder co-extrusion with IBC, servo control, and automatic die requires an operator who understands melt temperature profiling, layer ratio tuning, and bubble stability management. If your team is learning blown film from scratch, start on a monolayer line first.

Not sure if ABC three-layer fits your film structure? Send us your target film specification and we'll recommend the right extruder configuration within one business day:

• Your target film structure (which polymer per layer, approximate thickness per layer)

• Required lay-flat width and typical gauge range

• Target monthly volume and operating hours

Send your film spec here.

Technical Advantages

ABC Independent Extruder Control — Each Layer at Its Optimal Processing Window

Three independently controlled extruders (55mm / 60mm / 55mm) with dedicated barrel temperature zones allow each polymer to process at its ideal temperature. A food-packaging structure with mLLDPE at 160-180°C, LDPE core at 150-170°C, and HDPE outer at 190-210°C runs all three simultaneously — impossible on a monolayer line where one compromise temperature degrades at least one polymer. The 60mm core provides throughput for the thickest layer; 55mm skins give responsive control for thin functional layers.

38CrMoALA Bimetallic Screw & Barrel — Extended Service Life Under High-Output Conditions

38CrMoALA nitrided steel with bimetallic barrel construction provides surface hardness of HV 900+ with corrosion resistance. Standard nitrided screws running 24-hour packaging film production with filler and EVA acidic byproducts wear to replacement in 18,000-22,000 hours. Bimetallic construction extends life to 35,000+ hours — critical for converters running 7000+ hours per year where screw replacement downtime costs production days.

IBC + High-Speed Double Duct Air Ring — Cooling from Both Sides

The internal bubble cooling system combined with a high-speed double duct external air ring cools the bubble from inside and outside simultaneously. On a 355mm die with external-only cooling, 50-micron LDPE output caps at 130-150 kg/h — cooling is the bottleneck. IBC doubles the effective cooling area, raising the ceiling to 200+ kg/h. The high-speed double duct directs airflow precisely at the frost line, improving bubble stability where single-duct rings allow frost line oscillation.

Servo Drive + Automatic Tension Dual Winding — Roll Quality for Downstream Converting

Servo motors control extruder speed, haul-off, and winder tension with closed-loop feedback — no gearbox drift, no belt slippage. The upper rotating traction system (1700mm roller) with oscillating haul-off distributes gauge variation through 360° rotation, producing flat rolls with consistent unwind tension. Automatic dual winding switches between two shafts without stopping — continuous production during roll changeover. For converters supplying lamination and printing customers, roll quality directly determines rejection rates.

Free film structure optimization — send us your packaging film spec, get back a layer configuration recommendation. We'll provide:

• Recommended 3-layer structure with polymer grade suggestions per layer

• Material cost comparison: your current monolayer cost vs. ABC three-layer cost per kg

• Estimated output rate at your target film width and gauge

No cost. Based on actual material pricing and machine output data. Send your film spec here.

Real Production Issues It Solves

Seal-layer polymer waste — using expensive mLLDPE throughout when only the inner layer needs it. Monolayer packaging film uses 100% mLLDPE for seal performance — but only the inner 20% of the film does the sealing. ABC three-layer places mLLDPE only in the seal layer, with standard LDPE/LLDPE in core and outer skin. At mLLDPE premium of $200-300/ton, a converter using 500 tons/year saves $20,000-30,000 annually — without changing film performance.

Layer ratio drift during long production runs. Without individual melt pumps, back-pressure changes as screw temperature stabilizes shift the layer ratio over the first 1-2 hours of a run. The film starts at 20/60/20 and drifts to 25/55/20 — seal performance changes, optics change, the customer notices. Per-extruder melt pump control holds layer ratio within ±1.5% of setpoint from minute one to hour twelve.

Hydraulic screen changer downtime on contaminated regrind. Converters running in-house edge trim regrind face more frequent screen blockage than virgin-only producers. The hydraulic screen changer enables screen pack swap in under 30 seconds without stopping the line — versus 15-20 minutes of downtime to manually change a static screen. Over a month running 30% regrind, this saves 10-15 hours of production time.

Roll rejection from lamination customer due to gauge bands. Fixed-position haul-off creates thickness bands that show up as tight/loose spots when the laminator unwinds at 200+ m/min — the web oscillates, tension control hunts, and the customer rejects the roll. Oscillating haul-off eliminates gauge banding. The 1700mm traction roller provides wide-web stability for consistent nip pressure across the full film width.

Production Scenarios

Production Scenarios and Recommended Configurations

How It Works

1. Material feeding: Three independent hoppers feed the 55mm skin extruders and 60mm core extruder. Each can be fitted with gravimetric blenders for precise additive dosing per layer.

2. Independent melting & filtration: Each extruder melts its assigned polymer at its optimal temperature. The hydraulic screen changer enables rapid screen pack swaps without line stoppage — critical when running regrind-containing core layers.

3. Melt metering & co-extrusion: Melt pumps meter precise layer volumes into the 355mm spiral mandrel die. The three melt streams converge inside the die, forming a three-layer tube with the layer sequence set by die channel routing.

4. Bubble formation & dual-side cooling: The melt tube exits the die and inflates. The high-speed double duct external air ring cools the outside; the IBC system circulates cooled air through the bubble interior — cooling from both sides simultaneously.

5. Bubble stabilization & collapsing: The stabilizing cage guides the bubble into the collapsing frame. The upper rotating traction system with 1700mm roller pulls film at controlled speed while oscillating 360° to distribute gauge variation.

6. Automatic dual winding: The water-cooled air cooler (20HP) conditions film before winding. Automatic dual winding with tension control switches between two shafts without stopping — continuous production during roll changeover.

Optional Configurations

Available Options — Core Specs Included as Standard

Customer Case

Location: Guangzhou, China — flexible packaging converter
Machine: ABC Three-Layer Co-Extrusion Film Blowing Machine, 355mm die, IBC, servo drive
Film product: mLLDPE/LDPE/HDPE food packaging film, 50 microns, 1600 mm lay-flat
Before: Two monolayer lines running 100% mLLDPE. Combined output: 140 kg/h. Material cost premium: ~$18,000/month.
After: One ABC line. Output: 165 kg/h. mLLDPE only in seal layer (20%). Material cost reduced by $11,000/month. Customer lab testing confirmed equivalent hot-tack strength.
Payback: 15 months from material savings; additional benefit from labor reduction and 30% lower energy per kg.

Why Choose MINGYANG

• 15+ years manufacturing blown film equipment in Jiangyin, Jiangsu — co-extrusion lines running in 30+ countries across Southeast Asia, Middle East, Africa, Europe, and South America.

• CE-certified electrical and safety systems on all export machines. Each ships with wiring diagrams, PLC program backup, and spare parts catalog.

• Pre-delivery FAT on every machine: We run your specified film structure at production speed before crating. Test data and video provided before dispatch.

• 2-year warranty on main drives, 1 year on electrical. Critical spares (screws, barrels, melt pumps, IBC fans, servo drives) stocked — shipped within 48 hours.

• Remote video-guided commissioning as standard; on-site engineer available. Training covers recipe setup, layer ratio programming, IBC tuning, and preventive maintenance for operators and maintenance staff.

Frequently Asked Questions

Performance and Material Compatibility

What polymers can this ABC machine process?

LDPE, LLDPE, mLLDPE, HDPE, and EVA in any three-layer combination. Typical structures: mLLDPE seal layer / LDPE-LLDPE core / HDPE outer for food packaging; LDPE / LLDPE / LDPE for shrink film. Not suitable for PA (nylon), EVOH barrier resins, or polymers requiring barrel temperatures above 280°C.

What is the realistic output for three-layer packaging film?

At 50 microns LDPE/LLDPE/HDPE with 1600 mm lay-flat: 140-180 kg/h sustained. At 30 microns lamination film: 100-140 kg/h. Output varies with film gauge, width, and polymer combination. The IBC system raises the cooling ceiling — on this 355mm die configuration, cooling is not the bottleneck below 200 kg/h.

How does the 55/60/55mm screw configuration affect film structure flexibility?

The 60mm core extruder provides higher throughput capacity for the thickest layer (typically 50-60% of total thickness), while the 55mm skin extruders offer faster response for thin functional layers (15-25% each). This asymmetric configuration matches how most three-layer packaging films are structured — a thick core for mechanical strength flanked by thinner functional skins.

Purchasing and Delivery

What is the typical delivery lead time?

Standard: 45-60 working days. Custom die sizing or non-standard options: 60-75 working days. Sea freight varies — Southeast Asia 7-10 days, Middle East 15-20 days, Europe 25-30 days, South America 25-35 days.

What information do you need to configure and quote?

Target film structure (polymers per layer, layer ratios), lay-flat width and gauge range, target output (kg/h or tons/month), key film application, and factory electrical supply. Share polymer grade datasheets if available for screw design optimization.

Installation and Maintenance

What routine maintenance does the hydraulic screen changer require?

Hydraulic oil level and filter check weekly. Seal inspection every 500 cycles. The hydraulic power unit is self-contained — maintenance is limited to oil changes every 2000 operating hours and periodic seal replacement. Screen packs themselves are the primary consumable, swapped in under 30 seconds during production.

How long do the 38CrMoALA bimetallic screws and barrels last?

Service life: 35,000+ operating hours under normal packaging film production with standard additive loading. High filler content (above 5% anti-block or slip) may reduce life to 28,000-32,000 hours. Bimetallic construction provides roughly double the service life of standard nitrided screws in EVA and high-additive applications.

What operator training do you provide?

Training covers: HMI recipe setup, layer ratio programming, IBC tuning, screen changer operation, winder tension, and daily inspection. Delivered to operators and maintenance staff separately. Written SOPs in English. Free refresher within warranty.

Get Your ABC Co-Extrusion Film Blowing Machine Quote

Tell us your film requirements — we'll configure and quote within 3 working days.

• Target film structure (polymers per layer, approximate layer ratios)

• Required lay-flat width range and typical film gauge (microns)

• Target output: kg/h or tons/month

• Key film application and end-use requirements (seal strength, clarity, shrink percentage)

• Polymer grade datasheets if available

• Factory electrical supply and floor dimensions (L×W×H)