A flow wrapper is an automated packaging system that encloses products in flexible film. The machine forms a longitudinal seal and two end seals to create a closed package.

The completed package is often called a pillow pack because of its shape.

Unlike manual packaging methods, flow wrapping machines are built for continuous production. This makes the equipment suitable for businesses that need to package large quantities efficiently.

How Do Flow Wrapping Machines Work?

Flow wrapping machinery uses a continuous roll of flexible film to wrap products at a steady production rate.

1. Product Feeding

Products enter the wrapping section through an automatic conveyor or feeding arrangement.

2. Film Forming

As the item travels forward, the machine forms the flexible film around it.

3. Sealing Along the Pack

A longitudinal seal joins the film beneath or above the product, forming a continuous tube.

4. Cross Sealing and Cutting

Cross seals are formed at each end before the package is cut from the continuous film.

5. Finished Product

Once sealed and cut, the finished pack moves out of the machine ready for handling, delivery or sale.

Advantages of Flow Wrapping Machinery

Flow wrapping equipment can help manufacturers improve output and produce consistent packs.

Fast Packaging Output

Flow wrapping machinery can process thousands of products every hour when the equipment and application allow.

Uniform Seals and Appearance

Products pass through the same controlled sealing process. This can help keep retail packs neat and recognisable.

Lower Operator Requirements

An automated system reduces hands-on work throughout the wrapping process. Staff can therefore spend less time on repetitive packaging work.

Protection During Storage and Transport

A closed flow-wrapped pack provides protection from dust, damp conditions, contamination and physical contact during warehousing, handling and delivery.

Flexible Packaging Options

Modern machines can package many product sizes and shapes using different flexible films.

Which Products Can Flow Wrapping Machinery Package?

The process can package products from several different sectors.

Products frequently packaged in this way include:

• Biscuits
• Bakery products
• Sweets, chocolate bars and confectionery
• Fresh produce
• Selected frozen products
• Medical devices
• Pharmaceutical goods
• Personal care products
• Domestic and consumer products
• Hardware components

Because it can package both food and non-food goods, flow wrapping is widely used across manufacturing industries.

Which Packaging Films Work with Flow Wrappers?

Different film materials can be used according to the packaging requirements.

Available film options include:

• BOPP film
• Polyolefin film
• Polyethylene (PE)
• PET film

The correct material will be determined by the product type, storage period, presentation requirements and production setting.

When Should You Invest in a Flow Wrapping Machine?

Many businesses move to automatic flow wrapping when manual packaging begins to restrict production.

Signs that an upgrade may be needed include:

• Your required packaging output is rising
• Hand wrapping creates a production bottleneck
• Packaging quality varies between operators
• Greater consistency is required
• Labour costs are increasing

Automation may provide steadier production without reducing packaging consistency.

Key Flow Wrapper Features

Several factors should be considered when selecting flow wrapping machinery.

Specifications to review include:

• Packaging speed
• Product size capacity
• Easy product changeovers
• Printed-film registration using photocells
• Date and batch-code printing
• Automatic feeding integration
• User-friendly controls
website
• Reliable sealing performance

The correct choice depends on your products, current production volume and future growth plans.

What Is the Difference Between Flow Wrapping and Shrink Wrapping?

Flow wrapping and shrink wrapping both involve film, but they form packs in different ways.

A flow wrapper creates a closed pillow-shaped pack using continuous film.

Shrink wrapping places film around the item and then uses heat to contract it closely around the outside.

Businesses should consider presentation, product characteristics and post-production handling when selecting a system.

Can a Flow Wrapper Integrate with Existing Equipment?

Yes. Many flow wrapping machines are designed to connect with existing production equipment.

Integration options commonly include automatic product feeders, conveyors and label applicators. This allows manufacturers to add automated packaging without making major changes to the full production line.

Flow Wrapping Machinery from Kempner

Kempner UK has more than 50 years of experience supplying packaging machinery and materials throughout the UK.

Its range includes horizontal and vertical flow wrapping systems for food and non-food products.

Machines can be supplied with printed-film registration, optional coding systems and tailored configurations.

The company offers installation, start-up support, servicing and continued technical help. These services can help businesses keep equipment operating consistently.

Questions About Flow Wrapping Machinery

What Is a Flow Wrapping Machine Used For?

A flow wrapping machine wraps separate products in flexible packaging film and produces closed pillow-shaped packs. These packs can protect products during storage, transport and retail display.

Is Flow Wrapping Suitable for Food Products?

Yes. Flow wrapping is widely used for many bakery, confectionery, snack and fresh-food applications. It provides closed packaging that supports hygienic handling.

Can Flow Wrapping Machinery Package Non-Food Products?

Yes. Manufacturers use flow wrapping machinery for medical items, pharmaceuticals, small components, personal care goods and household products.

How Many Products Can a Flow Wrapper Package?

Operating speed depends on the machine and the product being packaged. Many high-performance machines can wrap several thousand products per hour.