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Secondary Packaging · Shrink Wrapping

Shrink Tunnel

Controlled recirculating heat shrinks film tight around cartons, bottles, trays and bundles - a secure, tamper-evident wrap after the sealer. Configured to your speed, product size and film.

Fully recirculating heated air
Automatic temperature control
Installed and serviced from Puchong
Shrink tunnel with rod conveyor
Shrink TunnelFull specs
Overview

Shrink Tunnel

A shrink tunnel uses controlled, recirculating heat to shrink film tight around a product after the sealer. Products are first sealed inside shrink film by an L-type or automatic sealer, then carried through the heated tunnel on a rod conveyor, where the film contracts to the product's shape and forms a secure, tamper-evident wrap that protects against dust, moisture and damage.

With over 10 years of experience supplying sealer-and-tunnel lines to food, beverage, cosmetics and electronics manufacturers across Malaysia, Welpack matches the tunnel to your production speed, product dimensions and film type, whether you run small batches or a high-speed automated line. Every tunnel comes with local installation and after-sales service from our Puchong, Selangor facility.

Features

What sets it apart

Full datasheet on request.

Highlights
Dead roller conveyor (Rod Type)
Speed-changeable motor with easy speed adjustment
Fully recirculating heated air
Highly efficient heating with good heat separation
Heating air and air circulation adjustment
Temperature controlled automatically
Cooling system at the rear of the tunnel
Applications

What goes through a shrink tunnel

A shrink tunnel finishes the wrap the sealer started - here is what goes through it.

Transport protection
Keeps products stable and protected from dust, dirt, and moisture.
Odd-shaped items
Wraps tools, hardware, or bundled items securely to prevent shifting or scratches.
Retail-ready packaging
Creates neat, tamper-evident wraps for electronics, cosmetics, toys, and small appliances.
Manufacturing & industrial protection
Seals components and metal parts to prevent dust, moisture, and minor surface damage.
Food and Beverage
Bundling water bottles, canned drinks, and sauces into multipacks. Individual trays, bakery products, and frozen meals wrapped for freshness and tamper evidence.
Cosmetics and Personal Care
Creating clean, professional presentation with tamper evidence for perfume boxes, skincare sets, and cosmetic kits.
Electronics
Protecting circuit boards, phone accessories, and boxed electronics from dust, static, and moisture during storage and shipping.
Print and Stationery
Protecting books, magazines, and stationery sets from moisture and handling damage during distribution.
Industrial and Hardware
Wrapping tools, metal parts, and small machinery components for transit protection using heavy-duty PE film.
FAQ

Common questions

What types of products can be used with a shrink tunnel?

Shrink tunnels are suitable for cartons, bottles, trays, cans, bundles, boxes, and other packaged products.

What shrink films can be used?

Common films include PE, PVC and POF shrink film, depending on product size, strength requirement and application.

Can the air flow and circulation be adjusted?

Yes. Heating air and air circulation can be adjusted to achieve optimal shrinking results for different products and films.

What maintenance is required?

Routine maintenance includes cleaning the tunnel, checking heaters and fans, and inspecting electrical components for safe operation.

What shrink film thickness should I use?

For most retail and food packaging, 15 to 19 micron POF film provides a good balance of clarity, strength, and cost. For heavier products or multipacks, 20 to 25 micron film adds extra puncture resistance. For industrial bundling with PE film, 30 to 50 micron thickness is standard. Your Welpack representative can recommend the right gauge based on your product weight and dimensions.

Can a shrink tunnel handle irregular shapes?

Yes. Shrink film conforms to the shape of the product when heated, so bottles, tools, cosmetic sets and gift baskets all shrink cleanly. The sealer decides the size limit, not the tunnel: pair the tunnel with our L-type sealer for boxed products, or with the automatic shrink wrapping machine for a continuous line.
Related machines

Build the rest of the line

Machines that sit before or after this one on the line - each links to its own page.

Automatic L-Type Sealing Machine
Seals products into centre-folded shrink film with an L-shaped nickel-chrome sealing bar at 1-15 packs per minute.
View machine
Automatic Shrink Wrapping Machine
Conveying, feeding, sealing, cutting and shrinking in one continuous line.
View machine
Stretch Film Wrapping Machine for Pallets
Wraps palletised loads in stretch film for stable, weather-protected, tamper-evident shipments.
View machine
Tell us your product and line speed
We configure the machine to your line and quote - usually within 2 working days.