Why Pick a Double Head Film Blowing Machine Supplier Price lead life
August 26, 2026
Anyone who has ever priced plastic film machines understands the actual question. It is not 'how much does it cost?' It is “what happens after three years? We reviewed double head film blowing machine suppliers, specifications, and warranty conditions throughout the industry. Those who initially inquire about screw design, motor grade, and after-sales service have less issues later.
What a double head film blowing machine supplier provides is explained in this article. We compare double-die and single-die output. We point out the specifications and service terms that matter most. And we illustrate how your choice of machine varies by resin type.
What Is a Double-Head Film Blowing Machine?
A double head film blowing machine is an extrusion machine that has two dies on one base. It makes two rolls of film at a time. Compared to a plastic film extruder that utilizes one die every cycle. The two dies are designed to have one drive, frame, and control panel.
Therefore, it is a single industrial film blowing machine, not two independent units.
A double-die film blowing machine is normally equipped with one screw and two die heads. The screw L/D ratio controls the evenness of resin melting. Output doesn’t rely on number of dies, but rather screw size and motor power.
Double-Head Machine: Key Features at a Glance
Double Die vs Single Die Film Blowing
One die machine rolls one roll on one extruder at a time. This means a compact footprint and a cheap initial cost. In exchange for increased output from a single powertrain, a double-head plastic bag film production machine takes up more room. This may reduce the cost of film per kg. The savings are correct but still rely on your resin, film gage and run length.
How Much Film Can a Double-Head Machine Actually Produce?
A double-head LLDPE film blowing machine output is measured in kilos per hour. It is dependent on the size of the screw, the power of the motor, and not simply on the number of dies. As a specific example, a double-head device with a screw of Φ60mm and an 18.5kW motor is often rated at about 50–60 kg/hr of total output.
With a bigger Φ65mm screw and a 22kW motor it gets this closer to 60-70 kg/hr. Frame size scales film width and thickness as well. These figures vary with die size, roller width, and film gage. Treat any output figure as a starting range, not a fixed promise. A few things change real-world output:
Film thickness setting - thinner film tends to run quicker than thicker film
Resin grade - HDPE, LDPE and LLDPE respond differently at similar heat setting
Roller and traction width - wider rollers need matching motor power
Workshop temperature – heat or cold alter the flow of the melt
Machine Weight and Footprint Matter Too
A double-head HDPE film blowing machine is bigger and heavier than a single-die device. It has two dies and frequently a bigger traction and winding part. Machines of this type may weigh 2,500–3,000 kg. They require a floor area of roughly 5-5.5 meters by 3.2-3.4 meters plus room for the tower height. Check ceiling height and floor load before you purchase, not after the equipment comes.
What Specs Should You Compare Between Suppliers?
The specifications that make a good double-headline are in the drive train, not in the sales text. Before you ask for a formal quotation, compare them in writing.
A polyethylene film making machine equipped with improved components will have tighter tolerances throughout the years of usage. The screw and gearbox wear the most over time. If a provider does not know which column his model would fit, please inquire. That’s a legitimate thing to ask before you lay down any deposit.
What Warranty and After-Sales Terms Should You Expect?
A reliable double head film blowing machine supplier should have a certain warranty duration. They should also assist you get the equipment set up and provide you a clear fix-it plan after that period is over. For example, Ruian Yunfeng Machinery Co., Ltd. provides a 12-month warranty on their equipment from the date of delivery.
This includes construction defects. The deal also includes on-site installation, start-up and personnel training, which the business will carry out. When the warranty is done, they’re still offering remote assistance and reimbursed repairs.
Ask any supplier these questions before you commit:
Are setup and startup covered or invoiced separately?
What is covered under warranty, and what voids it (poor power, incorrect mods, abuse)?
How can you acquire replacement parts when the warranty is up?
Is there remote support available, and how do you plan an on-site visit if required?
What documents do you need to have on file (serial number, purchase paper) to make a claim?
A double head film blowing machine supplier that responds to these questions clearly in writing is often simpler to deal with in the long run than one who delivers a pricing sheet.
Choosing Between HDPE, LDPE, and LLDPE Configurations
Double Die Film Blowing Machine Cooling and Screw Configuration. The die is determined by the resin you use. It’s not the number of heads that counts. HDPE film blowing machine is set up well for a stiff bag. LDPE film extrusion machine sets are suitable for soft film.
LLDPE is good for strong films that must resist tearing, like stretch wrap. Some double head lines can run all three resins on one frame, but you need to check with your double head film blowing machine supplier.
This solves two problems: film that is too brittle for its bag and output that is too low owing to untuned heat settings. Matching the resin to your product.
Why a Double Head Film Blowing Machine Supplier's Background Matters
The history of a double head film blowing machine supplier speaks volumes about how effectively they have perfected their products. Ruian Yunfeng Machinery Co., Ltd. was established in 2001, with more than 20 years’ experience in the plastic machines sector. The firm has more than 10 national patents. Its facility is around 10,000 square meters, and it has exported equipment to over 60 nations.
This means its machines are tested in a variety of power, climatic, and workplace settings, rather than only one market. None of this substitutes checking out the actual spec sheet you require. More focus on everyday dependability often requires a lengthier record,
Frequently Asked Questions
How wide a film can a double head machine produce?
Film width depends on the model size. The typical twin head systems create film in the 500mm to 600mm range per die. Wider frames allow for bigger frames but need corresponding motor power and roller breadth. Match film width to your actual bag or container dimension.
What warranty period is standard for industrial film blowing equipment?
Common is a normal 12 months from the date of delivery. It covers flaws in regular use. Warranty conditions normally prohibit damage caused by wrong power, inappropriate modifications or overuse. Always receive the warranty details in writing before you pay any deposit.
Can one machine really produce film for different bag types?
Yep. If the machine is rated for HDPE, LDPE and LLDPE, it may commonly transition between resins for various bags or films. Changing resins generally entails new heat settings and occasionally new dies. Ask your supplier whether you need to change dies between the two resins.
What screw specification should I look for in a plastic film extruder?
A typical starting point would be a screw L/D of 28:1. Upgraded installations employ 30:1 to 32:1 double-alloy screws for more consistent melting . Long runs tend to provide a more consistent production at greater L/D ratios. Ask whether the screw is vacuum heat treated, since this impacts long-term wear.
How do I check if a supplier's after-sales support is reliable?
Reliable after-sales service entails on-site set-up, staff education and a clear warranty claim procedure. Inquire about what happens with repairs after the warranty expires. If a provider simply provides phone support and doesn’t have a defined protocol for it, consider it a caution indicator.
Conclusion
There are three things to consider when choosing a double head film blowing machine supplier. Check the true specifications ( motor, gearbox, screw) Get a documented warranty and after-sales service plan. And find a track record that works in many places, not just one place.
This mark is Ruian Yunfeng Machinery Co., Ltd. Over 20 years' expertise in plastic equipment, including HDPE/LDPE/LLDPE certified double-head models such as the YF-FED series, with a clear 12 months guarantee and on-site set-up support. If you are considering double head film blowing machine suppliers for your next line, it’s good talking to them directly.
