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.
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 produce repeatable sealed packs.
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
The machine seals the film lengthways so that it surrounds the product in a tube.
4. End Sealing and Cutting
End-sealing jaws close the package before cutting it into an individual pack.
5. Finished Product
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.
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.
Which Products Can Flow Wrapping Machinery Package?
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
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.
Common materials include:
- Biaxially oriented polypropylene film
- Polyolefin packaging film
- Polyethylene film
- Polyethylene terephthalate 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
- Greater consistency is required
- Manual packaging is becoming more expensive
Automation may provide steadier production without reducing packaging consistency.
What Features Should You Look for in Flow Wrapping Machinery?
The correct machine should be chosen according to the product and production requirements.
Useful machine features include:
- Maximum production speed
- Supported product dimensions
- Fast and straightforward changeovers
- Photocell registration for printed films website
- Integrated date or batch coding
- Compatibility with automatic feeding systems
- Clear operator controls
- Reliable sealing performance
Your product range, packaging volume and projected demand should guide the final machine specification.
Flow Wrapping Versus Shrink Wrapping
Both systems package products in flexible material, although their operating methods differ.
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 right method depends on the required appearance, product type and handling conditions after packaging.
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.
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.
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 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 package thousands of individual items each hour.