Key Benefits
- Fully automatic bag making, sealing, film management and corner cutting reduces manual labour and setup time
- PLC control with human-machine interface and text alarm light enables unmanned supervision and quick fault detection
- Servo-driven position adjustment ensures precise film alignment and consistent wrap quality across batches
- Produces a tight, moisture-proof seal with a clean middle seal that enhances product appearance and protection
- Increases production efficiency by 60% compared to manual wrapping, reducing labour and material waste
- Handles a wide range of product sizes from 110 mm to 400 mm in length and 30 mm to 150 mm in height
Application Scenarios
- Pharmaceutical companies wrapping small medicine boxes for retail or distribution with a clean, sealed finish
- Cosmetic brands packaging travel-sized beauty kits or sample sets with a professional, moisture-resistant wrap
- Electronics suppliers shrink-wrapping mobile phone cases, power banks and data cables for retail or bulk shipment
- Tea producers sealing gift boxes or sample packs with a tamper-evident, attractive outer layer
- Promotional product manufacturers wrapping custom keychains with branded logos and messages in bulk
Who It Is For
- Small to medium-sized packaging lines that need to automate shrink wrapping without full production line integration
- Brands that require a consistent, high-quality outer wrap for product presentation and protection
- Contract packers handling multiple product types with varying dimensions and packaging needs
- Manufacturers replacing manual wrapping with a faster, more reliable automated solution
Problems It Solves
- Manual wrapping leads to inconsistent seal quality, poor alignment and high labour cost over time
- Inadequate sealing allows moisture ingress and damage to sensitive products like electronics and medicine
- Lack of automation limits output to below 6 pieces per minute, slowing down order fulfilment
- Poor film management causes wrinkles, misalignment or film waste during wrapping
- No real-time fault detection means defects are found only after the batch is complete
Technical Features
- Fully automatic film forming, sealing, shrink wrapping and corner cutting in one continuous process
- PLC control system with human-machine interface and text alarm light for real-time monitoring
- Servo-driven position adjustment for precise film alignment and repeatable results
- Mechanical manual adjustment for fine-tuning during setup or format changeover
- Sealing temperature adjustable from 170 to 260C to match different POF film types
- Air supply required at 0.5 to 0.7 MPa for consistent sealing performance
Specifications
| Machine model | SG400 |
|---|---|
| Machine type | Shrink Wrapping Machine |
| Packing material | POF film |
| Working length | 110 mm - 400 mm |
| Working width | 60 mm - 350 mm |
| Working height | 30 mm - 150 mm |
| Speed | 6 - 12 pcs/min |
| Power supply | AC 220V 20A 50Hz (single-phase) |
| Wrapping motor power | 5.5 kW |
| Heat shrink machine power | 16 kW |
| Sealing temperature | 170 - 260C |
| Air supply | 0.5 - 0.7 MPa |
| Screw accuracy | +/-0.1 mm |
| Product quality rate | 99% |
| Machine dimension | L2760 mm x W1570 mm x H1750 mm |
| Machine weight | About 1450 kg |
| Operator requirement | 1-3 machines for 1 person |
Packing Materials It Runs
- POF shrink film for transparent, durable, moisture-proof wrapping
- Food-grade POF film available upon request for sensitive or consumable products
- Film rolls compatible with 110 mm to 400 mm length and 60 mm to 350 mm width
How the Machine Works
- 1Film unwinding and automatic bag formation
- 2Product feeding into the formed film sleeve
- 3Middle seal and corner cutting with precise servo positioning
- 4Heating and shrink wrapping with controlled temperature and airflow
- 5Final discharge of wrapped product with consistent alignment
Quality Control Before Shipment
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Certifications
- ISO
- CE
Customization Options
- Adjustable length and width settings to match product dimensions from 110 mm to 400 mm and 30 mm to 150 mm
- Sealing temperature set within 170 to 260C range for different film types
- Film width and roll diameter matched to customer's supply chain and packaging line
- Voltage and plug type arranged for destination market on request
- Optional air compressor supplied if site air is not available
How It Compares
| Manual shrink wrapping | The SG400 eliminates hand labour, ensures consistent seal quality and increases output from 6 to 12 pieces per minute, but requires a fixed floor space of 2760 x 1570 mm |
|---|---|
| Basic semi-automatic shrink machine | The SG400 includes PLC control, servo positioning and automatic corner cutting, offering higher precision and reliability, but requires a 220V 20A power supply and compressed air |
| Side-seal shrink wrapper | The SG400 uses a middle seal for a cleaner, more symmetrical wrap, ideal for products with branding on all sides, but requires more precise product alignment |
Use Guide
- 1Ensure a clean, dry air supply at 0.5 to 0.7 MPa and a single-phase 220V 20A 50Hz power outlet
- 2Load the POF film roll onto the machine and align the film guide rollers
- 3Set the working length, width and height parameters on the PLC interface to match your product
- 4Adjust the sealing temperature to 170 to 260C based on the film type and thickness
- 5Run a test batch of 10 pieces and check seal quality, alignment and shrink tightness
- 6Clean the sealing bars and film guides after each production run to prevent residue build-up
SG-400 Automatic Intelligent Middle Seal Shrink Wrapping Machine FAQ
What product sizes can the SG400 handle?
It handles products from 110 mm to 400 mm in length, 60 mm to 350 mm in width, and 30 mm to 150 mm in height.
How fast does it run?
The machine runs at 6 to 12 pieces per minute, depending on product size and film type.
What power supply does it need?
It requires a single-phase 220V 20A 50Hz power supply. We can adjust the voltage and plug type for your market.
Do I need an air compressor?
Yes, an air supply at 0.5 to 0.7 MPa is required. We can supply an air compressor with the machine if your site does not have one.
Can it wrap food or medicine boxes?
Yes, it can wrap medicine, food, and health care boxes. Food-grade POF film is available upon request.
What is the machine's weight and footprint?
The machine weighs about 1450 kg and measures 2760 mm (L) x 1570 mm (W) x 1750 mm (H).
Is the machine certified?
Sengong is certified to ISO and CE. Certificates are available on request via email or WhatsApp.
Related Machines
Get A Quote For the SG-400
Tell us your product, bag weight and hourly output. We confirm the film, the bag size and the total delivered price.