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.

Because of its shape, the finished package is commonly known as a pillow pack.

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.

What Is the Flow Wrapping Process?

Flow wrapping machinery uses a continuous roll of flexible film to produce repeatable sealed packs.

1. Products Enter the Machine

Products are carried into the machine by a conveyor or integrated feeding system.

2. The Film Is Formed Around the Product

The packaging film is shaped around each product as it moves through the machine.

3. The Length Seal Is Formed

The film is sealed along its length to create a continuous tube around the product.

4. Cross Sealing and Cutting

End-sealing jaws close the package before cutting it into an individual pack.

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

Automatic systems can package thousands of products per hour, depending on the product and machine specification.

Consistent Packaging Quality

Each product receives the same seal quality and presentation. This can help maintain a uniform brand appearance.

Reduced Labour Costs

Automation reduces the amount of manual handling needed during packaging. Staff can therefore focus on other production tasks.

Product Protection

Flow wrapping helps protect products from dust, moisture, contamination and physical damage during distribution and storage.

Adaptable Product Handling

The equipment can be configured for varied product formats and packaging materials.

What Can Be Packaged Using a Flow Wrapper?

Flow wrapping machinery can be used for many food and non-food products.

Common examples include:

• Individual or grouped 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

Flow wrapping is used throughout many industries because it can handle both edible products and manufactured items.

Which Packaging Films Work with Flow Wrappers?

A flow wrapping machine can use several flexible packaging films depending on the product and application.

Available film options include:

• BOPP film
• Polyolefin film
• Polyethylene (PE)
• Polyethylene terephthalate 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?

An automatic flow wrapper may become suitable when manual processes start slowing the production line.

You may benefit from upgrading when:

• Production volumes continue to increase
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• Hand wrapping creates a production bottleneck
• Pack appearance or seal quality is inconsistent
• You need more repeatable packaging results
• Manual packaging is becoming more expensive

A suitable flow wrapper can raise output and produce more uniform packaging.

How Do You Choose a Flow Wrapping Machine?

Machine selection requires an assessment of pack format, output and future demand.

Useful machine features include:

• Maximum production speed
• Supported product dimensions
• Fast and straightforward changeovers
• Photocell registration for printed films
• Integrated date or batch coding
• Compatibility with automatic feeding systems
• Clear operator controls
• Consistent and dependable seals

Your product range, packaging volume and projected demand should guide the final machine specification.

Flow Wrapping Versus Shrink Wrapping

Although both methods use flexible film, the packaging processes are different.

A flow wrapping machine forms a sealed pillow pack from a continuous roll of film.

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

The choice will depend on the desired pack format, the product and how it will be stored or transported.

Can Flow Wrapping Machinery Be Added to an Existing Production Line?

In many cases, yes. Current flow wrappers may be installed as part of an established production system.

The machine can work alongside feeding units, conveyor systems and labelling equipment. This allows manufacturers to raise production capacity without replacing every existing system.

Kempner Flow Wrapping Systems

Kempner has supplied packaging machines and materials across the UK for over five decades.

Kempner supplies both horizontal and vertical machines that can be configured for different product types.

Available options include photocell registration, date or batch coding and machine configurations for specific production needs.

Support services include machine installation, commissioning, maintenance and technical assistance. These services can help businesses support dependable long-term production.

Frequently Asked Questions

What Does a Flow Wrapper Package?

A flow wrapping machine packages individual products in flexible film to form sealed pillow packs. These packs can help shield items while they are stored, delivered or presented for sale.

Are Flow Wrappers Used for Food Packaging?

Yes, they are. Flow wrapping is widely used for bakery goods, confectionery, snacks and fresh produce. It provides a hygienic sealed pack.

Can a Flow Wrapper Be Used for Manufactured Goods?

Yes, they can. Manufacturers use flow wrapping machinery for a range of healthcare, industrial and consumer products.

How Fast Can Flow Wrapping Machines Operate?

The production rate varies according to product dimensions and machine specification. Many high-performance machines can package thousands of individual items each hour.