White Top Liner Paper Coating Machine
The White Top Liner Paper Coating Machine applies a controlled white coating to kraft liner, recycled liner and compatible cardboard. It improves surface coverage, brightness and print acceptance while preserving the strength required for corrugation and packaging conversion.
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Selective UV Coating for Kraft Liner and Packaging Board
Corrugated packaging manufacturers often require the strength and economy of brown or recycled liner together with a clean white surface for printing. The wrong coating procedure will give you an inconsistent shade, showing the colour of the base paper, or excessive consumption of coating or a surface which does not perform well in the printing process.
The White Top Liner Paper Coating Machine is developed to apply a formulated white coating over kraft liner, testliner and suitable cardboard. Its application system controls the coating deposit over the web, while the drying portion provides a stable surface for printing and downstream conversion.
Mohindra Mechanical Works makes this equipment for paper mills, board manufacturers and packaging material converters wishing to produce coated white liner for corrugated boxes, retail packaging and branded shipping cartons.
High Quality Cardboard Coating Machine for Packaging Production
The device, as a High Quality Cardboard Coating Machine, can be designed for firms handling heavier board grades that require an enhanced printing face.
Board coating requires consistent feeding and sufficient drying capacity, as higher-GSM material responds slowly to variations in moisture and temperature. The machine controls the web by coating and drying, which gives accurate rewinding of the completed board.
This makes it useful for converters wanting to enhance conventional kraft liner or cardboard into higher-value material for printed and branded packaging.
Converting Brown Liner into a Printable White Surface
Brown kraft and recycled liner offer robustness but their colour and surface roughness can limit the quality of printed images. White coating gives a better background for colours, text, barcodes and branding.
The coating fills small surface irregularities and reduces the visual effect of the darker base sheet. This creates a brighter, more consistent print surface without having to replace the whole board structure with expensive white fibre.
The white top coated liner is a popular choice for corrugated packaging where strength, print presentation and conversion performance are all critical. The packaging’s smoothness, opacity and brightness have a direct effect on the finished product’s look.
White Top Kraft Liner and White Top Testliner
Both materials give you with a white surface for printing, however the basic construction may change.
White Kraft Liner
Usually chosen when more strength and packaging performance is required. It may contain a kraft-fibre-based structure with a white surface layer or coating.
White Top Testliner
Typically uses a recycled-fibre base with a coated or white top surface. It provides a cost-effective printing face for many corrugated packaging applications.
The machine can be planned according to the particular base board, but coating formulation and operating parameters may need to change between grades.
Drying Heavy Paper Without Damaging Its Structure
Lightweight paper, cardboard and liner differ in the way they retain and release moisture. If the drying is too aggressive the board may curl, shrink and lose its dimensional stability. Incomplete drying can cause blocking, surface marking or unstable roll formation.
The drying section is designed around the wet coating load, board thickness and speed of operation. Balanced temperature and airflow assist eliminate moisture while conserving the structure required for later corrugation.
Where desired, the machine can have numerous drying zones so initial water removal and final drying can be controlled separately.
35+ Years of Manufacturing Experience
Precision Engineering & Quality Manufacturing
Customized Machine Configurations to Your Needs
Fast and Reliable After-Sales Support
Finished Product Applications
- Industrial Product Boxes : Suitable for corrugated packaging where product information, handling instructions and branding must remain clear.
- Food and Beverage Packaging : Can produce liner for compatible packaging applications subject to the use of appropriate coating formulations and compliance testing.
- E-commerce Shipping Cartons : Improves the appearance and branding potential of corrugated boxes used for online order fulfilment.
- FMCG Packaging Boxes : Suitable for coated liner used in cartons for household goods, personal care products and packaged consumer products.
- Retail-Ready Packaging : Creates a brighter surface for packaging displayed directly on supermarket and retail shelves.
- Corrugated Box Outer Liner : Produces a white printable face liner for corrugated boxes used in branded packaging and transportation.
Key Features
- Adjustable Working Parameters : Machine speed, coating application, temperature and airflow can be managed according to the product.
- Progressive Drying System : The drying profile removes moisture in stages to protect the board from sudden heat exposure and excessive deformation.
- Uniform Cross-Web Application : Controlled coating distribution helps minimise shade differences between the centre and edges of the roll.
- Heavy-GSM Web Handling : The feeding and tension system can be configured for kraft liner, testliner and compatible packaging board.
- Controlled Coat Weight : Coating deposits can be regulated according to base colour, roughness and required opacity.
- High-Coverage White Coating : The application system distributes the formulation to reduce base-paper show-through and improve surface appearance.
Frequently Asked Questions
The machine can process compatible materials, but food-contact suitability depends on the coating formulation, raw materials and required regulatory testing.
Coat weight, binder flexibility, drying conditions and board moisture should be balanced according to the intended folding and corrugation process.
Insufficient opacity, low coat weight, uneven application or excessive base-paper roughness may cause show-through.
A multi-head or multiple-pass configuration may be considered when separate pre-coat and top-coat layers are required.
The finished material may support flexographic, offset, digital or other compatible printing processes. Suitability should be tested with the actual coating and ink system.
Yes, subject to its surface strength, GSM, moisture level and compatibility with the selected coating formulation.
Yes. Compatible brown kraft liner can be coated to reduce the visibility of its natural colour and create a white printable face.
The machine primarily applies a formulated white coating. The exact shade, brightness and opacity depend on the customer’s formulation.
It is a specialised type of cardboard coating machine developed mainly for producing a white printing surface on liner and packaging board.
It applies a white coating to kraft liner, recycled testliner or compatible cardboard to create a brighter, smoother and more printable surface.
