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.
Flow wrappers differ from manual packaging systems because they can operate continuously. This makes the equipment suitable for production lines that require fast and consistent packaging.
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 are carried into the machine by a conveyor or integrated feeding system.
2. Packaging Film Positioning
As the item travels forward, the machine forms the flexible film around it.
3. Longitudinal Sealing
The machine seals the film lengthways so that it surrounds the product in a tube.
4. End 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.
Why Use a Flow Wrapping Machine?
Many manufacturers invest in flow wrapping machinery to increase production efficiency while maintaining packaging quality.
Increased Production Rates
Automatic systems can package thousands of products per hour, depending on the product and machine specification.
Repeatable Pack Presentation
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 focus on other production tasks.
A Protective Film Barrier
The sealed film can shield products against dirt, moisture, contamination and handling damage during warehousing, handling and delivery.
Flexible Packaging Options
Current flow wrapping systems can handle a broad selection of product dimensions, shapes and film types.
Which Products Can Flow Wrapping Machinery Package?
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
- Fruit and vegetables
- Frozen foods
- Medical products and devices
- Pharmaceutical goods
- Cosmetics and personal care items
- Household goods
- Small industrial and hardware parts
Because it can package both food and non-food goods, flow wrapping is widely used across manufacturing industries.
Flow Wrapping Film Options
The correct flexible film will depend on the item being packed and the conditions it must withstand.
Common materials 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?
An automatic flow wrapper may become suitable when manual processes start slowing the production line.
Signs that an upgrade may be needed include:
- Production volumes continue to increase
- Hand wrapping creates a production bottleneck
- Packaging quality varies between operators
- Greater consistency is required
- 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.
Important features include:
- Packaging speed
- Product size capacity
- Fast and straightforward changeovers
- Photocell registration for printed films
- Integrated date or batch coding
- Compatibility with automatic feeding systems more info
- User-friendly controls
- Reliable sealing performance
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.
The right method depends on the required appearance, product type and handling conditions after packaging.
Flow Wrapping Machine Integration
In many cases, yes. Flow wrapping machinery can often be integrated with equipment already in use.
Compatible equipment may include automatic feeders, conveyors and labelling systems. 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.
Systems may include printed-film controls, coding equipment and layouts adapted to individual applications.
Support services include machine installation, commissioning, maintenance and technical assistance. 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 closed packaging that supports hygienic handling.
Can a Flow Wrapper Be Used for Manufactured Goods?
Yes. 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 produce several thousand sealed packs in an hour.