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Subcategory · Single-layer film
Mono-Layer Blown Film Machines
SJ-series single-screw blown film lines for HDPE, LDPE and LLDPE film — from the compact SJ-FM-45 to the SJ-65/FM1200 for bag plants and packaging film producers.
Definition
What is a mono-layer blown film machine?
A single-layer blown film line uses one extruder to melt polymer, forms a film bubble through the die and air ring, then cools, collapses and winds the film. It is the simplest and most common line for carrier bags, produce bags and general packaging film.
Specifications
Mono-layer SJ series range
| Parameter | Details |
|---|---|
| Models | SJ-FM-45 · SJ-50/FM600 · SJ-55/FM800 · SJ-60/FM1000 · SJ-65/FM1200 |
| Film width (folded) | 100 – 800 mm (SJ-FM-45) · up to 600 / 800 / 1000 / 1,200 mm (SJ-50–65) |
| Film thickness | 0.01 – 0.12 mm (SJ-FM-45) · 0.008 – 0.10 mm (SJ-50–65) |
| Max. output | 35 – 50 kg/h (SJ-FM-45) · 30 – 60 / 40 – 80 / 50 – 100 / 50 – 120 kg/h |
| Screw | Φ50 mm (SJ-FM-45) · 50 / 55 / 60 / 65 mm, L/D 30:1 |
| Materials | HDPE / LDPE / LLDPE |
Selection guide
Which single-layer line fits your plant
| Line type | Capability | Best for | E-SHION model |
|---|---|---|---|
| Small bag shop | 100 – 800 mm film, 35 – 50 kg/h | Compact single-screw line | SJ-FM-45 |
| Bag factory, mid volume | up to 800 – 1,000 mm, 40 – 100 kg/h | Single-screw line, 55 – 60 mm | SJ-55/FM800 · SJ-60/FM1000 |
| High-volume bag plant | up to 1,200 mm, 50 – 120 kg/h | Single-screw line, 65 mm | SJ-65/FM1200 |
How to choose
How to choose a mono-layer line
Set film width and thickness
Bag width and film gauge decide the die size and screw diameter — from 100 mm up to 1,200 mm folded.
Match output to your bag volume
Estimate daily film consumption; 30 – 120 kg/h covers small shops up to high-volume bag plants.
Plan the full line
Blown film, flexo printing and bag making can be combined into one production flow.
Machines in this subcategory
Mono-Layer Blown Film Machines
Mini Film Blowing Machine
A compact SJ-FM-45 with 100–800 mm film width and 35–50 kg/h output — a practical first line for a small bag business.
Monolayer Blown Film Machine
Four SJ models from 50 to 65 mm screws cover folded widths up to 1,200 mm and outputs from 30 to 120 kg/h.
Applications
Who uses mono-layer film
Carrier & grocery bags
T-shirt, vest and shopping bag film from HDPE/LDPE.
Produce & packaging film
Thin film for fruit, vegetables and light packaging.
Lamination base
Base film for printing and lamination converters.
Small bag plants
A single compact line for factories entering bag production.
For the complete film-to-bag flow, see the Plastic Bag Production Line — from film blowing and printing to bag making and recycling.
Buyers ask
Frequently asked
questions
Which materials can be processed?
HDPE, LDPE and LLDPE film. The SJ-FM-45 is set up for HDPE/LDPE; the larger SJ models run the same resin family.
What film widths are available?
Folded widths from 100–800 mm on the SJ-FM-45 up to 600, 800, 1,000 or 1,200 mm on the SJ-50 to SJ-65 models.
What is the output range?
From 35–50 kg/h on the SJ-FM-45 up to 50–120 kg/h on the SJ-65/FM1200, depending on film width and thickness.
What film thickness can be produced?
0.01–0.12 mm on the SJ-FM-45 and 0.008–0.10 mm on the SJ-50 to SJ-65 models.
Can printing be added?
Yes — flexo presses can run in line with the film line or as a separate pass before bag making.
Why choose E-SHION
Working with us
SJ series, factory-built
Film lines from the SJ family are built and tested in our Ruian facility.
CE-certified machinery
Export machines are CE certified for the EEA market.
Configured to your film
Width, thickness, winder and printing options are configured on request.
Verified supplier
Made-in-China verified supplier with SGS audit report (2024), plus CCPIT certification.
Fast response
Send your film recipe and output target — our engineers reply within 4 hours on business days.
Get your custom solution
Plan your film line
with our engineers
Tell our engineering team your film recipe, width and output target. We design and build machinery to match — average response time 4 hours.
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