Among many coating equipment, roller coating machine is widely used in the coating process of wood, glass, metal, plastic and other substrates due to its simple structure, high efficiency and wide application.
Especially in the woodworking machinery industry, the application of roll coating machine is particularly common. This article will systematically introduce the main types of roller coating machine, the working principle of each type, the applicable scenarios and its structural characteristics.
Do you know what roller coating machine is?
Roller coating machine is a device that evenly applies coating to the surface of a plate or other flat substrate through a coating roller. The structure of roller coating machine includes conveyor roller, coating roller, metering roller (or called scraper roller), pressure roller, conveyor belt and control system. The equipment mainly adjusts the gap and speed between the coating roller and the metering roller to achieve precise control of the coating thickness. Due to its easy operation, high degree of automation, uniform coating and no splashing, roller coating machine is widely used in furniture manufacturing, architectural decoration, automotive parts, electronic appliances and other fields.
What are the types of roller coating machine?
Roller coating machines can be divided into many types according to different factors such as the number of coating rollers, structural form, substrate type and coating materials. Common classification methods are as follows:
1. Classification by the number of coating rollers
· Single-roller coating machine
· Double-roller coating machine
· Multi-roller coating machine (including three-roller, four-roller, etc.)
2. Classification by applicable substrate
· Roller coating machine for MDF board
· Roller coating machine for glass coating
· Roller coating machine for solid wood board and plywood
3. Classification by coating material
· Roller coating machine for UV coating
· Paint coating machine such as PU and PE
· Roller coating machine for water-based coating
4. Classification by structural form
· Top coating roller coating machine
· Bottom coating roller coating machine
· Top and bottom double-sided coating machine
In actual applications, these classifications usually exist in a cross-section, and a roller coating machine may belong to multiple classification categories at the same time. Next, several common types of roller coating machines will be introduced according to their functional uses.
What are the functions of different types of roller coating machines?
1. MDF UV roller coating machine
MDF UV roller coating machine is a roller coating equipment designed for coating UV light-curing coating on the surface of medium-density fiberboard (MDF). This type of equipment applies a uniform UV coating through a roller, and then cooperates with a UV curing device to form a dense and wear-resistant coating film on the surface of the MDF board.
Structural features of MDF UV roller coating machine:
· Equipped with a high-precision metering roller to adjust the coating thickness
· Use special corrosion-resistant rubber or steel coating rollers
· Usually used with a UV curing furnace to form a complete coating and curing production line
· Can handle a variety of coating effects such as high gloss, matte, semi-matte, etc.
MDF UV roller coating machine is applicable to:
· Furniture panels
· Decorative wall panels
· Surface treatment of wooden floor substrates
MDF UV roller coating machine is one of the most common roller coating machines in the current furniture manufacturing industry, combining efficiency and effect.
2. Furniture single roller coating machine
The furniture single roll coating machine is a basic roller coating equipment, which is suitable for the single-sided coating process of flat materials such as furniture wood boards and composite boards. The equipment has a simple structure and is easy to operate and maintain.
Structural features of furniture single roll coating machine:
· Usually composed of a coating roller and a conveyor roller
· The coating thickness is adjusted by the gap between rollers
· Suitable for small batch and multi-variety production lines
· Optional automatic feeding and automatic receiving systems
Applicable scenarios of furniture single roll coating machine:
· Primary coating process of furniture manufacturers
· Coating primer, sealer or coloring coating
· Furniture materials such as solid wood veneer boards and particle boards
Although the furniture single roll coating machine has a simple structure, it is practical and is the preferred basic equipment for many furniture factories.
3. UV roller coating machine for glass and MDF processing
This type of equipment is suitable for coating operations on two different substrates, glass and MDF. It is usually used to spray UV coatings to form a smooth, high-hardness decorative surface. Compared with the coating machine for a specific purpose, this model has stronger adaptability.
Structural features of UV roller coating machine for glass and MDF processing:
· The coating system is equipped with a multi-speed pressure adjustment function
· Can adapt to substrates of different thicknesses (such as 4mm glass and 18mm MDF)
· Specially designed anti-deviation device to ensure symmetrical and uniform coating
· Usually equipped with a PLC automatic control system
UV roller coating machine for glass and MDF processing Applicable scenarios:
· Home decoration glass, such as background walls and cabinet door glass
· High-gloss MDF board for high-end furniture
· Coating processing of advertising display boards
This type of roller coating machine has multi-material compatibility and is an important part of the diversified production line.
4. Solid wood melamine wood roller coating machine
For solid wood surfaces and boards with melamine finishes, the dedicated roller coating production line includes multiple roll coating machines linked to form a complete set of process flows, from primer, coloring, topcoat to curing, forming a continuous operation.
Structural features of solid wood melamine wood roll coating machine:
· Fine combination of coating roller and metering roller
· Continuous coating without breakpoints, suitable for high-gloss finish treatment
· Multiple devices are connected in series to achieve multi-level and multi-station coating
· The equipment is equipped with an automatic cleaning system to improve work efficiency
Applicable scenarios of solid wood melamine wood roll coating machine:
· Solid wood furniture production (cabinets, wardrobes, desktops)
· Surface repair or secondary coating of melamine veneer panels
· High-end wooden building materials field
Solid wood melamine wood roller coating production line is often used in large-scale coating workshops and is an indispensable roll coating machine configuration in high-end manufacturing.
5. Plywood single roller coating machine
Equipment specially used for single-sided coating process of plywood, suitable for preliminary coating operations such as edge banding and surface coating. Plywood has high requirements on the rolling accuracy and elastic materials of roller coating equipment due to its large surface unevenness.
Structural features of single roll coating machine for plywood:
·Equipped with flexible rubber roller to adapt to irregular board surface
·With adsorption device to prevent the deviation of thin and light boards
·Compact design, suitable for small factories
·Can be matched with manual or automatic loading and unloading system
Applicable scenarios of single roll coating machine for plywood:
·Edge banding of plywood
·Primer coating, coloring layer processing
·Basic coating process of decorative composite board
Single roll coating machine for plywood is a typical entry-level coating equipment, but it plays an important role in the production of various wood products.
Advantages of roller coating machine: Why choose it?
Although various types of roller coating machines differ in structure and use, they all have the following advantages:
· Efficient coating: continuous mass production can be achieved
· Uniform coating: roller coating can avoid splashing and uneven thickness during spraying
· Easy operation: most equipment is equipped with intelligent control systems and user-friendly operation interfaces
· Low maintenance cost: stable structure, low failure rate, and convenient replacement of accessories
· Good environmental protection: especially UV roller coating system, no VOC volatilization during curing process
Therefore, in contemporary automated manufacturing processes, roll coating machine, as a mature equipment solution, plays an irreplaceable role.
Who is XMF Machinery and what do you offer?
XMF Machinery (Foshan XMF Machinery Co., Ltd.) is a professional coating equipment manufacturerand factory established in 2006 in Lishui Town, Nanhai District, Foshan City, Guangdong Province. As a reputable company and supplier, we focus on high quality, efficient surface coating printing machinery, including roller coating machines, spray machines, printing machines, mud coating machines, embossing machines and UV curing systems.