Jinan Smart Plastic Machine and Technology Co., Ltd.

Jinan Smart Plastic Machine and Technology Co., Ltd.

3 Layer Upper Rotary Blown Film Machine for Packaging Film

This equipment is mainly used for the production of high-end packaging film, such as composite film substrate, liquid film, shrink film, protective film, etc. The advanced design concept and optimized mold structure, combined with efficient cooling system and automatic deviation correction device, ensure uniform film thickness, smooth surface and stable quality. The equipment is highly automated and easy to operate. It is suitable for LDPE, LLDPE and other raw materials to meet a variety of industrial packaging needs.


Category: Upper traction rotary film blowing machine
Key word: Upper traction rotary film blowing machine

Whatsapp : +8613853165011


Email : [email protected]


Product details:

Item Parameters/Description
Main Application Produces high-end packaging films such as composite film substrates, liquid films, shrink films, protective films, cable films, and multifunctional industrial packaging films.
Applicable Raw Materials LDPE, LLDPE, and other raw materials
Product Quality Standard Acceptance according to national standards,thickness tolerance :±3%~±5%
Weight Metering Device Loss-in-weight metering feeding control system improves quality consistency and reduces waste.
Screw Extruder (SJ-75/30 SJ-55/30) 3 units, main motor power:2 units 37KW,1 unit 30kw, servo control, screw diameter: Ф75mm Ф55mm, L/D ratio: 30:1
Screen Changer Manual quick screen changer with good sealing, convenient operation
Die Head Ф350mm spiral center feed structure, alloy steel material, chrome-plated surface, 5 heating zones, heating power: 30KW
Air Ring Automatic thickness adjustment air ring, industrial-grade PC control, 120 control points for precise adjustments
IBC Internal Cooling System Ultrasonic closed-loop control, internal cooling air ring Ф350mm, inlet/exhaust fans: 4KW variable frequency speed regulation
Bubble Stabilization Device Rolling bubble stabilization rack, manual adjustment, low friction resistance, high stability
Herringbone Plate Device Aluminum alloy rolling herringbone plate, pneumatic opening/closing, length: ~8m, max angle: 25° (adjustable)
Traction System Center height: 8500mm, traction speed: 0-30m/min, horizontal reciprocating rotation, 360° rotation
Photoelectric Edge Correction Device Non-contact photoelectric measurement, fast response (up to 120m/min), automatic memory function
Tension Control System Closed-loop automatic control ensures constant winding tension
Online Edge Material Recovery Reel-type online edge material recovery machine
Secondary Traction & Winding Double-sided back-to-back friction plus center winding, max roll diameter: Ф600mm, max winding speed: 30m/min
Counting Device Photoelectric counter alarms and changes rolls automatically when the set length is reached
Trimming Device Online multi-film cutting based on product specifications
Control Interlocking PLC intelligent industrial control system, well-known brand electrical components, long service life, simple operation
Supporting Equipment 1 chiller, 1 water cooling exchanger

  1 Extruder

① Model: SJ-75/30 SJ-55/30

② Screw design: New high-efficiency three-section screw (feeding, compression, and homogenization sections) featuring an internal mixing section; ensures superior plasticizing and mixing performance, high output, low energy consumption, reduced output and pressure fluctuations, and high adaptability to raw materials.

③ Screw diameter: Φ75 mm Φ55 mm

④ L/D ratio: 30:1

⑤ Screw material: 38CrMoAlA

⑥ Barrel material: 38CrMoAlA

⑦ Main motor power: 37 kW 30 kW

2 Phase Die Head (3SM350)

This phase die head incorporates advanced domestic and international technologies and has been computer-optimized. It ensures uniform material distribution and low flow resistance, effectively guaranteeing consistent film thickness; it reduces film stretching and die head setup times, minimizes material waste during thickness adjustments, and lowers production costs.

3 Automatic air ring adjustment and automatic thickness measurement

The equipment utilizes an optimized air ring design that regulates airflow evenly and stably, significantly enhancing the cooling effect and film stability; this ensures high equipment productivity while optimizing film transparency and thickness tolerance.

The thickness gauge enables a comprehensive 360° inspection of the film with no blind spots. The automatic thickness adjustment ring effectively boosts production line output and improves film thickness tolerances. The die opening features 120 control points to ensure high precision. Blower power: 5.5 kW; Air duct material: Rubber.

4 (IBC) Closed-loop ultrasonic bubble-based membrane cooling system

This system utilizes a non-contact ultrasonic sensor suitable for various thin-film detection applications. Equipped with a high-precision temperature compensation sensor, it ensures accurate measurements in challenging environments. Automatic calibration and compensation are performed via a fuzzy logic control computer. The equipment supports manual and automatic start/stop modes and is simple and easy to operate.

5 Haul-off System

The haul-off frame has a centerline height of 8.5 meters and comprises a bubble stabilizing device, a collapsing frame (chevron plate assembly), and an upper rotating haul-off unit. The film bubble is continuously cooled during the ascent and enters the upper haul-off unit via the collapsing frame; the collapsing frame utilizes a roller guide system.

① Haul-off roller centerline height: 8,500 mm

② Haul-off speed: 0–30 m/min

③ Haul-off frame structure: Tower type

④ Haul-off roller specifications: Φ160×1700 mm; drive roller: steel; driven roller: rubber

⑤ Haul-off roller opening/closing control: Pneumatic solenoid valve

⑥ Haul-off roller drive motor: 2.2 kW, variable-frequency speed control

6 The corona treatment system

Technical Requirements
Technical Requirements Substrate material PE
Processing speed 60–80 m/min
Surface tension value (dyn/cm) after treatment Surface tension ≥ 42–44 dyn/cm
Effective treatment width Effective double-sided treatment width: 1500 mm
Other requirements For installation on a blown film production line; use of components

7 Secondary Traction Drive and Automatic Dual-Sided Friction Winding Unit


This unit integrates multiple functions, including tension control, film cutting, surface smoothing, secondary traction drive, length measurement, and film winding. The entire machine is equipped with an intelligent PLC control system.

① Secondary tensioning method: Dual-roller tensioning mechanism (1 steel roller + 1 rubber roller)

② Tensioning roller specifications: Φ160×1700 mm

③ Tensioning rubber roller material: Nitrile rubber

④ Tensioning motor power: 2.2 kW, variable frequency speed control

⑤ Tensioning gearbox: Worm gear reducer

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Product details

efficient plasticization

Double-layer stainless steel, cast aluminum, electromagnetic or infrared high-energy heaters, etc., equipment for efficient and fast plasticization.

Inflation system

Powerful inflation system generates uniform airflow, uniform film thickness when inflated, and high-quality plastic products appliate in agricuture and industry.

Quality Control

Before leaving the factory, conduct strict performance tests and reliability tests. Only equipment that passes various tests can be shipped to users from the factory.

Intelligent control:

Operators can easily set and adjust process parameters through the touchscreen interface, and monitor the operating status of the equipment in real time.

High precision:

Equipped with an advanced hydraulic system or an all-electric drive system, it is possible to achieve accurate pressure and speed control.

High-quality components:

The use of high-strength steel and high-quality alloy materials to fabricate the fuselage and key components ensures mould high performance

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Create product quality and build brands

Powerful

It has been selected as one of the top 500 Chinese enterprises for 14 consecutive years, with strong financial and technical strength.

Advanced technology

Process efficiencyDRP information is fully integrated and controlled, and the steel production process is at a high level.

Perfect industrial layout

A steel enterprise that takes steel production as its leading industry and integrates commercial, high-tech and other industries.

R & D capability

Created a number of "firsts" in China's steel industry, with strong R & D capabilities and technological innovation capabilities

Wide range of products

The products cover industry and agriculture products, varieties, and specifications, and can meet the diverse needs of customers.

Strong competitiveness

Products with high quality quickly occupied the domestic market and were successfully exported to many countries and regions.

Intelligent control systems are increasingly being used to automate, monitor and optimize equipment. Digital manufacturing technologies such as 3D printing and laser cutting will also be gradually applied to the production of plastic machinery parts to improve production accuracy and efficiency.

Adopt high-efficiency motors, optimized hydraulic systems, and energy-saving heating and cooling devices to reduce the energy consumption of equipment.

In order to improve the performance and precision of plastic machinery, the manufacturing of parts will also be more precise. The development and production of high-precision molds, screws, gears and other parts will become the key development direction of the enterprise.

Plastic machinery will gradually move towards multi-functional integration, allowing a single device to integrate multiple processing technologies, such as injection molding, extrusion, blow molding, and other functions, enhancing the versatility and flexibility of the equipment to meet the diverse production needs of customers.

Strengthen the global industrial layout and establish production bases, R & D centers, and sales networks abroad to better meet local market demand, reduce production costs, and improve the internationalization level of enterprises.

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Company located