A flow wrapper is an automated packaging system that surrounds products with a continuous flexible film. The machine forms long seals and cross seals to create a closed package.
The finished format is usually described 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.
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 enter the wrapping section through an automatic conveyor or feeding arrangement.
2. Film Forming
The machine guides the film around each product during the packaging process.
3. Longitudinal Sealing
A longitudinal seal joins the film beneath or above the product, forming a continuous tube.
4. The Pack Is Sealed and Separated
The machine creates end seals and then separates each pack from the film web.
5. The Completed Pillow Pack
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.
High Production Speeds
Depending on the machine model and product dimensions, a flow wrapper may package several thousand items each hour.
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 be assigned to other duties.
Protection During Storage and Transport
The sealed film can shield products against dirt, moisture, contamination and handling damage during warehousing, handling and delivery.
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
- Small industrial and hardware parts
Flow wrapping is used throughout many industries because it can handle both edible products and manufactured items.
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 click here
- 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
- Packaging quality varies between operators
- 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
- 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?
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.
A shrink wrap machine surrounds the product with shrink film before applying heat to tighten the material.
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.
Why Choose Kempner for Flow Wrapping Machines?
Kempner UK 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.
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 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 closed packaging that supports hygienic handling.
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 wrap several thousand products per hour.