Machine Overview
| Machine type | Sleeve sealer with heat shrink tunnel |
| Products | Bottles, cans, cartons, trays, multipacks and bundled goods |
| Output | 1–20 packs/min depending on model and collation |
| Pack style | Two-side seal sleeve with open ends — a bundle, not an enclosed pack |
| Max pack size | From 400 × 300 × 300 mm up to 730 × 500 × 350 mm across four models |
| Film | LDPE (PE) sleeve film; tunnels also run POF or PVC |
| Automation | Semi-automatic hand-fed or fully automatic conveyor-fed |
| Utilities | 220 V sealer, 380 V tunnel, compressed air 0.6–0.8 MPa |
Configurations
A sleeve sealer collates the products, draws LDPE film around the group, seals it into a sleeve and passes it through a heat tunnel that shrinks the film tight. The ends stay open, which is what makes it a bundling machine rather than an enclosing one — and why it costs less per pack than wrapping each item. What you choose comes down to how the product reaches the machine. If you are still deciding between machine types, start at shrink wrap machines.
01
The operator groups the products and loads them; the machine seals the sleeve and the tunnel shrinks it. The lower-cost entry point, and the flexible one when pack configurations change between runs.
02
Products arrive on an inverter-driven conveyor, sensors align and collate them, and the machine feeds film, seals and shrinks with the operator only supervising. The configuration for continuous bottling and FMCG lines.
03
Each sealer pairs with a tunnel sized to the pack: silica-tube heating, one or two fans, roller conveying, and adjustable heat and belt speed. Tunnel width and height decide the largest bundle you can run, so the pair is specified together.
04
Infeed conveyors, multi-lane collation, adjustable temperature control and end-of-line integration behind a filler, capper and labeller, so the sleeve sealer holds the same rate as the rest of the bottling line.
Pack types
A sleeve sealer groups products into a single sellable or shippable unit. Because the ends stay open, it suits packs that need holding together rather than sealing in. These are the four jobs it does most.
Bottled water, soft drinks, juice bottles and canned beverages bundled into retail multipacks — the highest-volume use of a sleeve sealer, usually sitting at the end of a bottling line.
Retail boxes, promotional packs, bakery trays and FMCG multipacks bundled for easier handling, warehousing, palletising and distribution.
Cleaning chemicals, paint tins, lubricants, personal care and hygiene products bundled for protection in storage and transport while keeping a clean appearance.
Tissue packs, building materials and other large or heavy items where the bundle has to survive handling, and where wrapping each item individually would cost more than it is worth.
Applications
Beverage and food. Bundling for transport and shelf:
Cartons and retail multipacks. Bundles for handling and display:
Industrial, chemical and personal care. Protection in transit:
The guides below cover the applications and buying questions we are asked about most for sleeve sealers.
Choosing: L-bar vs sleeve sealer · how sleeve shrink wrap delivers · how shrink wrap machines work
By product: beverage multipacks · bottled beverages · beverage cans · food packaging · household multipacks
By pack: retail promotional packs · industrial components · pallet and transport loads
Specifications
A sleeve sealer is specified by the size of the finished bundle, not the individual product. Four sealer sizes cover packs from 400 × 300 × 300 mm up to 730 × 500 × 350 mm, each paired with a tunnel whose shrink chamber has to clear the same bundle.
Sizing the machine. Measure the collated bundle at its largest — the count of bottles or cartons you want in one pack, laid out as they will run. That figure sets the sealer, and the tunnel shrink chamber must clear it in width and height. Loading weight matters too: the standard limit is 30 kg per pack.
Sleeve sealers run LDPE film as standard; the tunnels also handle POF and PVC. Because the sleeve is open at both ends, film use per pack is lower than a fully enclosed wrap, which is much of the cost case for bundling.
Speeds run from 1 to 20 packs per minute across the range. On an automatic machine with sensor collation the figure depends on how quickly product arrives; on a semi-automatic it depends on the operator. Confirm real output on a trial with your product.
| Sleeve sealer | SAP6540-SA | SAP-600XF | SAP-7540 | SAP-9540 |
|---|---|---|---|---|
| Type | Semi-automatic | Sleeve shrink wrapper | Fully automatic | Fully automatic |
| Max pack size | L400×W300×H300 mm | L90–330 × W50–160 × H50–180 mm | L530×W430×H350 mm | L730×W500×H350 mm |
| Seal / cutter | Sealing length 650 mm | Cutter length 600 mm | Cutter length 750 mm | Cutter length 950 mm |
| Speed | 10–20 pcs/min | 1–10 pcs/min | 1–10 pcs/min | 1–8 pcs/min |
| Power supply | 1.35 kW ×2, 220 V single phase | 1.2 kW, 220 V | 1.8 kW ×2, 220 V | 1.5 kW ×2, 220 V |
| Air pressure | 0.6–0.8 MPa | 0.6–0.8 MPa | 0.6–0.8 MPa | 0.6–0.8 MPa |
| Film | PE | PVC film | PVC | PE |
| Loading weight | 30 kg max | 10 kg | 30 kg max | — |
| Machine weight | 300 kg | 200 kg | 300 kg | 400 kg |
| Machine dimensions | 875×1040×1920 mm | — | 1490×1100×1920 mm | 1490×1290×1920 mm |
| Matched tunnel | SAP-6040PE | SAP-5530POF | SAP-7530PE | SAP-9050PE |
| Matched shrink tunnel | SAP-6040PE | SAP-5530POF | SAP-7530PE | SAP-9050PE |
|---|---|---|---|---|
| Shrink area width | 600 mm | 550 mm | 750 mm | 900 mm |
| Shrink area height | 400 mm | 300 mm | 300 mm | 500 mm |
| Shrink area length | 1800 mm | 1500 mm | 1500 mm | 1800 mm |
| Machine length | 3000 mm | 2100 mm | 2000 mm | 3000 mm |
| Fans | 1 | 2 | 2 | 2 |
| Belt speed | 0–6 m/min | 0–10 m/min | 0–10 m/min | 0–6 m/min |
| Power supply | 18 kW, 380 V | 19.2 kW, 380 V | 18 kW, 380 V | 28 kW, 380 V |
| Film | POF, PVC | POF, PVC | PVC | POF, PVC |
| Conveying weight | 30 kg | — | — | — |
| Machine weight | 380 kg | — | 300 kg | 350 kg |
| Machine dimensions | 3000×760×1580 mm | — | 2000×980×1480 mm | 3000×1260×1880 mm |
Every tunnel uses silica-tube heating with roller conveying and adjustable heat and belt speed. Conveyor and table heights are 800 mm, adjustable by 50 mm. CE and other industry certifications are available on request.
| Parameter | Specification |
|---|---|
| Pack style | Two-side seal sleeve with open ends; products bundled as one unit |
| Products | Bottles, cans, cartons, trays, tins, tissue packs, multipacks and bundled goods |
| Speed | 1–20 packs per minute depending on model, collation and pack size |
| Film | LDPE (PE) sleeve film; tunnels also run POF and PVC |
| Automation | Semi-automatic hand-fed, or fully automatic conveyor-fed with sensor collation |
| Tunnel | Silica-tube heating, one or two fans, roller conveying, adjustable heat and belt speed |
| Heights | Table and conveyor heights 800 mm, adjustable +50 mm |
| Utilities | 220 V single-phase sealer; 380 V three-phase tunnel; compressed air 0.6–0.8 MPa |
| Options | Infeed conveyors, multi-lane collation, adjustable temperature control, printed film |
| Integration | End-of-line behind filling, capping and labelling; feeds palletising |
Not sure whether you need a sleeve sealer or a fully enclosed pack? Read L-bar vs sleeve sealer, then send us your product and pack count for a trial.
About our modelModel codes shown are machines we have supplied and configured for previous projects. Your machine is specified and configured to suit your product, output and pack format — not supplied off the shelf.
About the machine
A sleeve sealer collates products into a group, draws LDPE film around them from a roll, and seals and cuts it into a sleeve open at both ends. The bundle then passes through a heat tunnel where silica-tube heaters shrink the film tight before it cools and discharges. For the wider category and the other machines in it, see shrink wrap machines.
On an automatic machine an inverter-driven conveyor and sensors handle the collation and spacing; on a semi-automatic the operator groups and loads the pack.
Downstream the bundle feeds a palletiser, case packer or straight to despatch, which is why sleeve sealers usually sit at the end of a bottling or FMCG line.
Read the full explanation in how sleeve shrink wrap delivers complete packaging solutions.
Sleeve sealers bundle almost anything that can be collated into a stable group and fits the tunnel chamber, up to 30 kg per pack.
Typical packs are bottled water and soft drinks, canned beverages, dairy and sauces, bakery trays, retail cartons, tissue packs, paint tins, lubricants and cleaning chemicals.
Where each item needs a fully enclosed four-side seal rather than a bundle, use an L-bar sealer for small consistent packs or a side bar sealer for long or continuous products.
See it running
Case Studies
A fully automatic line integrated into a water bottling system and a flexible multipack bottle operation, plus the comparison we send to anyone weighing a sleeve sealer against an L-bar.
“Highly recommended! Excellent customer service, great prices, and they always go above and beyond.”
Ratings and reviews are published on our Google Business Profile, where they can be read in full and in context.
PackMan purchased an Automatic 6-Lane, 4-Side Seal Vinegar Packaging Machine, and it has been performing reliably since installation. The machine delivers consistent packaging quality, operates efficiently, and has met our production expectations.
SA Packaging Machinery delivered a solution that has met our expectations. The equipment has been reliable in daily production, and we’re pleased with its performance. We found the team knowledgeable, professional, and willing to assist whenever required.
We’ve been very happy with the equipment supplied by SA Packaging Machinery. It’s straightforward to use, performs consistently, and has helped us improve our production process. The team was easy to work with and made the entire experience smooth.
Comparison
Both run the same sealing principle and the same LDPE film. What changes is how the pack is collated and loaded, and that decides output, labour and cost. Semi-automatic suits medium volumes and changing pack sizes; fully automatic suits a line that runs the same configuration all day.
| Semi-automatic | Fully automatic | |
|---|---|---|
| | |
| Loading | Operator groups and loads each pack | Conveyor feed with sensor collation |
| Speed | 10–20 packs/min, operator-paced | 1–10 packs/min sustained, line-paced |
| Pack flexibility | Changes between sizes easily | Best on one settled configuration |
| Labour | One operator per machine | Supervision only |
| Installed cost | Lower | Higher |
| Best for | Medium volumes, mixed products | Continuous bottling and FMCG lines |
Choose semi-automatic when pack configurations change or volumes are moderate; choose fully automatic when the sleeve sealer has to hold the pace of the line ahead of it.
The three shrink wrap machines do different jobs. A sleeve sealer bundles a group with open ends; an L-bar and a side sealer each enclose a product completely on four sides.
| Sleeve sealer | L-bar sealer | Side bar sealer | |
|---|---|---|---|
| | | |
| Job | Bundles a group as one pack | Seals one small pack fully | Seals long or continuous products fully |
| Film | LDPE from two rolls | Centre-fold POF | Centre-fold POF or LDPE |
| Seal | Two-side seal, open ends | Four-side seal, enclosed | Four-side seal, enclosed |
| Product size | Large bundles to 30 kg | Small to medium, within the frame | Any length, width to 850 mm |
| Typical use | Bottles, cans, cartons, trays | Boxes, cosmetics, books | Curtain rails, timber, trays |
Because the sleeve is the outward face of the pack, film choice is a branding decision as much as a packaging one.
| Printed shrink film | Clear shrink film | |
|---|---|---|
|  | |
| Presentation | Custom graphics, logos and promotional messaging | Product visible through the film |
| Branding | Replaces labels or cartons on the bundle | Relies on the products’ own labels |
| Cost | Higher setup cost per design | Lower, no print setup |
| Flexibility | One design per SKU | One film across many products |
| Best for | Beverage multipacks, promotions, retail | Transport packs, industrial goods, mixed SKUs |
Advantages
A sleeve sealer is the cheapest way per pack to turn loose products into a stable, sellable unit. Because the film only sleeves the group rather than enclosing each item, material cost per pack is low, and one machine handles bottles, cans, cartons and trays without tooling changes. It stabilises loads for transport, adds a tamper-evident finish, and on printed film it carries your branding without a carton or extra labels. For a bottling line it is usually the last machine needed to finish the pack.
Where each item must be individually enclosed on four sides, an L-bar sealer or a side bar sealer is the right machine instead.
Quotation
A sleeve sealer is quoted to the bundle you need to produce, so the quotation is built from your product, pack count and target output rather than from a list price. To narrow the specification before you enquire, read L-bar vs sleeve sealer and how sleeve shrink wrap delivers; for what shapes the figure on any machine quotation, see the packaging machine cost guide. Send us your product and pack count and we will bundle it on a trial machine and quote the configuration that suits it.
Why us
Every sleeve sealer we supply is installed and commissioned on your floor, with operator training, a spare-parts holding in Johannesburg and technical support once the line is running.
Installation and commissioning.
We position the sealer and tunnel, connect the 220 V and 380 V supplies and compressed air, set collation, seal timing, tunnel temperature and belt speed against your own product and film, and hand over once bundles are shrinking tight and square.
Operator training.
Your operators are trained on film loading and tracking, changing pack counts and collation settings, seal temperature and dwell, tunnel settings, daily cleaning of the sealing blade, and the wear items worth keeping on the shelf.
Service, spares and support.
Sealing elements, belts, film tracking parts and tunnel heating elements are held in Johannesburg, with service across South Africa and into neighbouring SADC markets. Routine care is set out in our packaging machine maintenance guide.
Choosing the right sleeve sealer configuration comes down to five things:
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SA Packaging Machinery supplies sleeve sealers and shrink tunnels across South Africa and Southern Africa. Send us your product and pack count and we will bundle it on a trial machine, recommend the configuration, and quote it.
Questions
A sleeve sealer collates products into a group, wraps LDPE film around them, seals and cuts it into a sleeve open at both ends, then passes the bundle through a heat tunnel that shrinks the film tight. It bundles products together rather than enclosing each one.
Bottles in glass, plastic, aluminium or tin; canned beverages and multipacks; cartons, retail boxes and bakery trays; tissue packs; paint tins, lubricants and cleaning chemicals; personal care and hygiene products; and other consumer or industrial goods that can be collated into a stable group.
Yes — the sealer forms the sleeve but the film only pulls tight under heat, so the tunnel is what makes the pack. Each sealer is supplied with a matched tunnel: SAP6540-SA with SAP-6040PE, SAP-600XF with SAP-5530POF, SAP-7540 with SAP-7530PE, and SAP-9540 with SAP-9050PE.
LDPE (PE) sleeve film as standard, which is the tough, economical choice for bundling. The tunnels also run POF and PVC. Film can be clear or printed with your own branding.
Between 1 and 20 packs per minute depending on the model, the pack size and how quickly product is collated. A semi-automatic machine is paced by the operator; a fully automatic one by the line feeding it. Real output is confirmed on a trial.
From 400 × 300 × 300 mm on the SAP6540-SA up to 730 × 500 × 350 mm on the SAP-9540, with a loading weight of up to 30 kg per pack. What matters is the size of the collated bundle, not the individual product, and the tunnel shrink chamber has to clear it.
Choose a sleeve sealer when you are bundling a group and open ends are acceptable — it uses less film and handles bigger, heavier packs. Choose an L-bar sealer when each item needs a fully enclosed retail pack. Our full comparison covers the decision.
Routine care: clean the sealing blade and film path, check film tracking stays aligned, calibrate seal and tunnel temperatures, inspect belts, rollers and conveyors, and check the tunnel heating elements. The general schedule is in our packaging machine maintenance guide.
