A flow wrapping machine 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.
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?
A flow wrapping machine uses a continuous roll of flexible film to produce repeatable sealed packs.
1. Products Enter the Machine
A conveyor or connected feeding system automatically moves products into the machine.
2. Film Forming
The packaging film is shaped around each product as it moves through the machine.
3. Sealing Along the Pack
A longitudinal seal joins the film beneath or above the product, forming a continuous 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.
Fast Packaging Output
Flow wrapping machinery can process thousands of products every hour when the equipment and application allow.
Consistent Packaging Quality
Each product receives the same seal quality and presentation. This can help produce a consistent presentation across a production run.
Less Manual Handling
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 warehousing, handling and delivery.
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?
A flow wrapper is suitable for a wide selection of food and manufactured goods.
Common examples include:
- Biscuits
- Cakes, bread products and other bakery goods
- Chocolate and confectionery
- Fresh produce
- Frozen foods
- Medical devices
- Pharmaceutical goods
- Personal care products
- Household goods
- Small industrial and hardware parts
Flow wrapping is used throughout many industries because it can handle both edible products and manufactured items.
Flow Wrapping Film Options
The correct flexible film will depend on the item being packed and the conditions it must withstand.
Frequently used films include:
- BOPP film
- Polyolefin packaging film
- Polyethylene film
- Polyethylene terephthalate film
Film selection should take account of the item, shelf-life needs, pack appearance and operating conditions.
When Should You Invest in a Flow Wrapping Machine?
Many businesses move to automatic flow wrapping when manual packaging begins to restrict production.
You may benefit from upgrading when:
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- Production volumes continue to increase
- Manual packaging slows the production line
- Packaging quality varies between operators
- You need more repeatable packaging results
- Labour costs are increasing
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.
Specifications to review include:
- Packaging speed
- Supported product dimensions
- Fast and straightforward changeovers
- Printed-film registration using photocells
- Date and batch-code printing
- Compatibility with automatic feeding systems
- Clear operator controls
- Consistent and dependable seals
The correct choice depends on your products, current production volume and future growth plans.
How Do Flow Wrappers Differ from Shrink Wrap Machines?
Both systems package products in flexible material, although their operating methods differ.
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.
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.
Integration options commonly include automatic product feeders, conveyors and label applicators. This allows manufacturers to increase packaging output without rebuilding the entire production process.
Kempner Flow Wrapping Systems
Kempner 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.
The company offers installation, start-up support, servicing and continued technical help. These services can help businesses keep equipment operating consistently.
Frequently Asked Questions
What Does a Flow Wrapper Package?
A flow wrapping machine packages individual products in flexible film to form sealed pillow packs. These packs can help shield items while they are stored, delivered or presented for sale.
Are Flow Wrappers Used for Food Packaging?
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 medical items, pharmaceuticals, small components, personal care goods and household products.
What Is the Speed of a Flow Wrapping Machine?
Operating speed depends on the machine and the product being packaged. Many high-performance machines can wrap several thousand products per hour.