A flow wrapper is an automated packaging system that wraps individual products in flexible packaging film. The machine forms long seals and cross 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 packaging film is shaped around each product as it moves through the machine.
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?
Many manufacturers invest in flow wrapping machinery to increase production efficiency while maintaining packaging quality.
High Production Speeds
Depending on the machine model and product dimensions, a flow wrapper may package several thousand items each hour.
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.
A Protective Film Barrier
A closed flow-wrapped pack provides protection from dust, damp conditions, contamination and physical contact during distribution and storage.
Packaging for Different Products
Current flow wrapping systems can handle a broad selection of product dimensions, shapes and film types.
What Can Be Packaged Using a Flow Wrapper?
Flow wrapping machinery can be used for many food and non-food products.
Typical applications 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
Because it can package both food and non-food goods, flow wrapping is widely used across manufacturing industries.
Flow Wrapping Film Options
Different film materials can be used according to the packaging requirements.
Common materials include:
- BOPP film
- Polyolefin packaging film
- Polyethylene film
- PET film
The most suitable film depends on the product, required shelf life, desired presentation and production environment.
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
- Packaging quality varies between operators
- You need more repeatable packaging results
- Manual packaging is becoming more expensive
A suitable flow wrapper can raise output and produce more uniform packaging.
Key Flow Wrapper Features
The correct machine should be chosen according to the product and production requirements.
Specifications to review include:
- Maximum production speed
- Supported product dimensions
- Fast and straightforward changeovers
- Photocell registration for printed films read more
- 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.
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.
With shrink wrapping, the product is enclosed in film that shrinks when it passes through a heat tunnel.
Businesses should consider presentation, product characteristics and post-production handling when selecting a system.
Flow Wrapping Machine Integration
In many cases, yes. Flow wrapping machinery can often be integrated with equipment already in use.
The machine can work alongside feeding units, conveyor systems and labelling equipment. This allows manufacturers to increase packaging output without rebuilding the entire production process.
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 Is the Purpose of Flow Wrapping Machinery?
A flow wrapping machine packages individual products in flexible film to form sealed pillow 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 biscuits, cakes, sweets, snack products and produce. It provides a hygienic sealed pack.
Are Flow Wrappers Suitable for Non-Food Items?
Yes, they can. Manufacturers use flow wrapping machinery for pharmaceutical products, medical devices, hardware, cosmetics and consumer goods.
What Is the Speed of a Flow Wrapping Machine?
Packaging speed is affected by the equipment model, pack format and item being handled. Many high-performance machines can wrap several thousand products per hour.