A flow wrapper is an automated packaging system that surrounds products with a continuous 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.

Flow wrappers differ from manual packaging systems because they can operate continuously. 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. Product Feeding

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

2. The Film Is Formed Around the Product

The machine guides the film around each product during the packaging process.

3. Longitudinal Sealing

The machine seals the film lengthways so that it surrounds the product in a tube.

4. End Sealing and Cutting

The machine creates end seals and then separates each pack from the film web.

5. Pack Exit

The completed pillow pack leaves the machine ready for storage, transport or retail display.

Why Use a Flow Wrapping Machine?

Businesses often choose flow wrapping machines when they need faster production and repeatable packaging results.

Increased Production Rates

Depending on the machine model and product dimensions, a flow wrapper may package several thousand items each hour.

Repeatable Pack Presentation

The machine applies consistent seals and pack formatting to every item. This can help produce a consistent presentation across a production run.

Less Manual Handling

Flow wrapping machinery limits the need for employees to wrap every product by hand. Staff can therefore be assigned to other duties.

Protection During Storage and Transport

The sealed film can shield products against dirt, moisture, contamination and handling damage during storage and transport.

Flexible Packaging Options

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

Common Flow Wrapping Applications

The process can package products from several different sectors.

Products frequently packaged in this way include:

• Individual or grouped biscuits
• Cakes, bread products and other bakery goods
• Chocolate and confectionery
• Fruit and vegetables
• Frozen foods
• Medical products and devices
• Pharmaceutical products
• Cosmetics and personal care items
• Household goods
• Small industrial and hardware parts

Its suitability for food and non-food applications makes flow wrapping a common packaging method in manufacturing.

What Films Can a Flow Wrapping Machine Use?

The correct flexible film will depend on the item being packed and the conditions it must withstand.

Frequently used films include:

• Biaxially oriented polypropylene film
• Polyolefin film
• Polyethylene film
• Polyethylene terephthalate film

Film selection should take account of the item, shelf-life needs, pack appearance and operating conditions.

Should Your Business Move to Automatic Flow Wrapping?

Companies often adopt flow wrapping machinery when hand packaging can no longer keep pace with demand.

A flow wrapping machine may be suitable if:

• Production volumes continue to increase
• Manual packaging slows the production line
• Pack appearance or seal quality is inconsistent
• You need more repeatable packaging results
• Manual packaging is becoming more expensive

Automatic packaging can improve productivity while maintaining consistent pack quality.

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
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• 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.

Integration options commonly include automatic product feeders, conveyors and label applicators. This allows manufacturers to raise production capacity without replacing every existing system.

Why Choose Kempner for Flow Wrapping Machines?

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.

Systems may include printed-film controls, coding equipment and layouts adapted to individual applications.

The company offers installation, start-up support, servicing and continued technical help. These services can help businesses maintain reliable packaging performance.

Flow Wrapping Machine FAQs

What Is the Purpose of Flow Wrapping Machinery?

A flow wrapping machine wraps separate products in flexible packaging film and produces closed pillow-shaped packs. These packs can provide protection during handling, distribution and 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 secure and hygienic packaging.

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 package thousands of individual items each hour.