Shrink Tunnel

SHRINK TUNNEL

Shrink Tunnel

A shrink wrap machine uses controlled heat inside a shrink tunnel to tightly wrap plastic film around products, creating a secure, tamper-evident seal that protects against dust, moisture, and damage. The process is simple: products are first sealed inside shrink film by a sealing machine, then passed through the heated tunnel on a conveyor where the film shrinks tightly around the product’s shape.

With over 10 years of experience supplying shrink wrapping systems to food, beverage, cosmetics, and electronics manufacturers across Malaysia, Welpack provides complete shrink wrapping solutions from sealing to tunnel stage. Our systems are configured to match your production speed, product dimensions, and film type, whether you are running a small batch operation or a high-speed automated line. Every system comes with local installation support and after-sales service from our Puchong, Selangor facility.

Features & Specifications

  • 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

Shrink Tunnel Applications

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.

Shrink Wrap vs Stretch Wrap: What is the Difference?

These two packaging methods are often confused, but they serve different purposes and use different machines. Shrink wrap uses heat to tighten film around individual products or bundles. It is sealed first, then passed through a shrink tunnel. Used for product-level packaging. Stretch wrap uses tension to wrap film around palletized loads. No heat is applied. Used for pallet-level load securing with a pallet stretch wrapping machine.

In a typical packaging line, products are first shrink wrapped individually or in bundles, then grouped into cartons, and finally the cartons are stacked on a pallet and stretch wrapped for shipping. Both processes are part of a complete end-to-line packaging workflow.

Need more info? Check out our most frequently asked 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 shrink wrap machines handle irregular shapes?

Yes. Shrink film conforms to the shape of the product when heated, making it suitable for irregularly shaped items like bottles, tools, cosmetic sets, and gift baskets. A sleeve sealing machine is the best sealer type for tall or unusual product shapes because it wraps film from a continuous roll without fixed size limitations.

Strengthen Your Packaging Process

Complete Your Packaging Line

Need a sealing machine to pair with your shrink tunnel? Explore our automatic L-type sealing machine for a complete shrink wrapping system.