JEWSHIN supplies automatic L-bar sealers and continuous side-sealing machines for shrink packaging lines. L-sealers are suitable for products within a defined length range, while side sealers are the better choice for long products, mixed product lengths, and continuous high-speed production.
A sealing machine wraps and seals the film around the product. A compatible heat shrink tunnel is normally required to complete the package.
Compare the Machines
Machine |
Best For |
Key Capacity |
A5645 Automatic L-Bar Sealer |
Standard cartons, food, electronics, and retail products |
Maximum product height: 120 mm |
ZF-A6352 Vertical L-Sealer |
Taller products requiring a centered seal |
Maximum product height: 250 mm |
Servo Side-Sealing Machine |
Long or variable-length products |
Unlimited product length; up to 50 packs/min |
Model 75 Rear Side Sealer |
Large, heavy products packed in PE film |
Heavy-duty PE bundling |
850C Extra-Wide Side Sealer |
Furniture panels, textiles, and oversized products |
Width + height up to 750 mm; unlimited length |
Automatic L-Bar Sealers
A5645 Scissor-Type L-Bar Sealer
The A5645 is designed for standard products up to 120 mm high. Its L-shaped sealing blade closes around the product to create the end and side seals in one cycle.
Best choice for: regular products with consistent dimensions and moderate-to-high production requirements.
Key points:
Maximum product height: 120 mm.
Scissor-type sealing movement.
One-piece alloy sealing blade.
Omron PLC.
Suitable for connection to a shrink tunnel.
ZF-A6352 Vertical L-Sealer
The ZF-A6352 uses a vertically moving sealing frame and supports products up to 250 mm high. Electric height adjustment allows the sealing line to be positioned closer to the center of the product.
Best choice for: tall cartons and products requiring a more symmetrical film position.
Key points:
Maximum product height: 250 mm.
Vertical sealing movement.
Electric sealing-height adjustment.
Panasonic PLC and drive system.
Suitable for connection to a shrink tunnel.
Continuous Side-Sealing Machines
Servo Side-Sealing Machine
The continuous side-sealing system is designed for products of different lengths. Unlike an L-sealer, it does not use a fixed sealing frame to define the maximum package length.
Best choice for: long products, frequent size changes, and continuous production.
Key points:
Unlimited product length.
Packaging speed up to 50 packs/min.
Inovance servo system.
SICK product-detection sensors.
Available as a complete line with a 5030LW shrink tunnel.
Model 75 Rear Side Sealer
The Model 75 is a heavy-duty sealing machine for large products wrapped in PE film. Its rear-positioned sealing mechanism is intended for stronger film and heavier packages.
Best choice for: beverage bundles, flooring, tiles, textiles, and construction materials.
Key points:
850C Extra-Wide Side Sealer
The 850C is designed for products that exceed the width capacity of standard side sealers.
Best choice for: furniture panels, large electronics, home textiles, and oversized packages.
Key points:
Cross-sealing blade: 850 mm.
Maximum product width + height: 750 mm.
Unlimited product length.
Electric height adjustment.
Recommended with the 8050LW shrink tunnel.
L-Sealer or Side Sealer?
Choose an L-Sealer When… |
Choose a Side Sealer When… |
Products fit within a defined length range |
Products are long or vary significantly in length |
Production speed is moderate |
Continuous higher-speed operation is required |
The product range is relatively consistent |
Frequent size changes are expected |
A compact sealing system is preferred |
Automatic line integration is the priority |
For tall products, choose the ZF-A6352. For PE film and heavy bundles, choose the Model 75. For extra-wide products, choose the 850C.
Selecting the Shrink Tunnel
The sealer and tunnel must be matched by:
Maximum wrapped-product width and height.
Film material and thickness.
Required conveyor speed.
Heating capacity.
Conveyor height and direction.
Package weight.
Standard POF packaging and heavy-duty PE bundling require different tunnel configurations. Do not select a tunnel based only on its opening dimensions.
Information Required for Selection
Please provide:
Minimum and maximum product dimensions.
Product weight.
Film material and thickness.
Required packages per minute.
Photo of the required finished package.
Available power supply.
Whether you need a sealer only or a complete shrink line.
Request a Machine Recommendation
WhatsApp: +86 131 2813 6672
Email: wendy@jewshin.com
