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 finished format is usually described as a pillow pack.
Rather than relying on repeated manual wrapping, flow wrapping machinery supports a continuous packaging process. This makes the equipment suitable for manufacturers processing high volumes of products.
How Does Flow Wrapping Machinery Work?
Automatic flow wrapping equipment uses a continuous roll of flexible film to package products quickly and consistently.
1. Automatic Product Feeding
A conveyor or connected feeding system automatically moves products into the machine.
2. Packaging Film Positioning
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.
What Are the Benefits of Flow Wrapping Machines?
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 produce a consistent presentation across a production run.
Reduced Labour Costs
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:
- 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
- Hardware components
Its suitability for food and non-food applications makes flow wrapping a common packaging method in manufacturing.
Which Packaging Films Work with Flow Wrappers?
Different film materials can be used according to the packaging requirements.
Frequently used films include:
- BOPP film
- Polyolefin film
- Polyethylene film
- Polyethylene terephthalate film
The correct material will be determined by the product type, storage period, presentation requirements and production setting.
When Is It Time to Use Flow Wrapping Machinery?
Companies often adopt flow wrapping machinery when hand packaging can no longer keep pace with demand.
You may benefit from upgrading when:
- Your required packaging output is rising
- Manual packaging slows the production line
- Packaging quality varies between operators
- You need more repeatable packaging results
- 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:
- Maximum production speed
- Product size capacity
- Fast and straightforward changeovers
- Photocell registration for printed films
- Date and batch-code printing here
- Compatibility with automatic feeding systems
- Clear operator controls
- Consistent and dependable seals
Machine suitability will be determined by the items being packed, required output and expected business growth.
Flow Wrapping Versus Shrink Wrapping
Flow wrapping and shrink wrapping both involve film, but they form packs in different ways.
A flow wrapping machine forms a sealed pillow pack from a continuous roll of film.
With shrink wrapping, the product is enclosed in film that shrinks when it passes through a heat tunnel.
The choice will depend on the desired pack format, the product and how it will be stored or transported.
Can a Flow Wrapper Integrate with Existing Equipment?
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 add automated packaging without making major changes to the full production line.
Why Choose Kempner for Flow Wrapping Machines?
Kempner has more than 50 years of experience supplying packaging machinery and materials throughout the UK.
Kempner supplies both horizontal and vertical machines that can be configured for different product types.
Machines can be supplied with printed-film registration, optional coding systems and tailored configurations.
Support services include machine installation, commissioning, maintenance and technical assistance. These services can help businesses maintain reliable packaging performance.
Frequently Asked Questions
What Is a Flow Wrapping Machine Used For?
A flow wrapping machine creates sealed film packs around individual items. These packs can help shield items while they are stored, delivered or presented for sale.
Is Flow Wrapping Suitable for Food Products?
Yes, they are. Flow wrapping is widely used for biscuits, cakes, sweets, snack products and produce. It provides secure and hygienic packaging.
Can a Flow Wrapper Be Used for Manufactured Goods?
Yes, they can. Manufacturers use flow wrapping machinery for medical items, pharmaceuticals, small components, personal care goods and household products.
How Fast Can Flow Wrapping Machines Operate?
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.