Description
Calendering is a mechanical process with multiple rolls passing compound material , such as silicone rubber,EVA , plastics including PVC, polymer ,vinyl, and even paper ,cloth , textiles. Through this continuous compresses and smooths process for these material, it finally produce uniform standalone material sheets with custom width and thickness, which can be adjustable for the rolls as per your specific requirement.
The four roll calender is mainly used for calendaring thin rubber sheet of inner liner and airtight layer of the radial tire,coating of fabric, canvas ,PVC film ,textiles rubberized, steel cord fabric rubberizedand other woven material , calendaring thin rubber sheet of inner liner and airtight layer of the radial tire. Besides, in the procession of sheeting, the rolls calendering machine can also press out the air in the material for producing the products without air bubble after cure. Basically , The more quantity of rolls the calendar has, the more times of the sheet are pressed and the calendar can make high quality and even thickness of sheets.
These 4 roller calender machine consist of base,rack, two rollers, motor,reducer, friction gear, distance regulator, thin oil lubrication device and other main parts/components. Its rolls are made of chilled cast iron with vanadium and titanium alloys ,whose hardness can reach up to 70HRC The surface of roll is very hard and anti-wear. When heated up or cooled down ,the rolls are either circumferentially drilled or centrally bored , in order keep the temperature well proportioned evenly spread on the roll surface.
Different from 3 Roll Calender Machine, 4 Roll Calender has two pairs of rollers, one on top and one on bottom, which work together to process raw materials.
When working, the raw material is firstly fed into the calendering machine from the upper feeding roll, and the upper and lower rolls work together to extrude the compound material. Before the material entering the lower roller , it actually have been crushed for many times and gradually become diluted materials sent out by the discharging roller.
These multi rolls calender machine are applicable for many material , including paper, textiles, PVC, film, Nonwoven and rubber etc.
When this calendering machine are used in the textile or fabrics industries, its rolls can be used to polish, smooth, and enhance fabrics in terms of density and shine. Its rolls or cylinders, often heated and designed with various textures, it play a crucial role in finishing textile products to achieve a high-quality end result.
We Simptek , as one professional manufacturer of rubber processing machine , can tailored all kinds of textile rubber PVC calender machine to meet our customers’ needs. from small laboratory calender machine sized 6”x18” to 26”x84” industrial production machines. They can be furnished with Two, Three, Four and Five Rolls in different profile and inner liner.
Our quality rubber calender machine are applied for many products ,like sheeting for lining, PVC films, fractioning of tire fabrics for Bicycle/motor cycle /Auto tires, hoses beltings, profiling, cushion gum, etc.
At Simptek , we specialize in the sales, maintenance, and consultancy related to calender machine for various industries including paper, textiles, PVC, film, and rubber. As China leading manufacturers for rubber processing machine, we offer a wide range of calender in different size, tailored to meet our customers’ needs.
Our expertise enables us to provide calender rolls with high-quality coatings customized to our customers’ specific requirements. Whether enhancing production efficiency, improving product quality, or extending equipment lifespan, we guarantee tailor-made solutions.
Structure of Calendere Machine
How does a Calendering Process Work?
The calendering process is a finishing operation widely used in many industries , like rubber , paper, textiles, cloth , plastic ,PVC, EVA film etc . A calender machine adopt a series of hard pressure rollers by passing them under significant pressure , in order to form or smooth a sheet of material
Here is how the calendering process works:
Step 1. Material
Firstly ,the compound material to be process, such as rubber ,fabric, textile ,paper, nonwoven, composite ,PVC or plastic EVA film, is prepared and fed into the rolls calendering machine. Of course ,before the process of calendering , these material may need pre-treatment processes such as drying, softening.
Step 2. Roller Configuration
The calendering machine consists of two or more chilled steel rollers, whose hardness can reach up to 70 HRC. These rolls may be arranged in several configuration, either vertically or horizontally in L style ,I style or Z format.
Step 3. Passing Through Calender Rolls
The material to be calendered, go through these pressurized rollers , which can be heated or cooled, depending on the material and your desired outcome. When the material passes through the nip among the rolls ,which create high pressure compresses on the material, reducing its thickness and increasing its density.
Step 4. Controlling the Rolls
Its speed, temperature, and gap between the rollers can be adjustable to control the degree of calendering. Through these series of operation , it can precisely control for the properties of thickness ,smoothness ,gloss of final material.
Step 5. Cooling and Winding
After the material are passed through the rollers, the calendered material need to be cooled or cut into desirable sheets according to your specific needs .
We Offers Various Roller Calender Machine
I Type vertical
L Type
Z Type
Two Rolls Calender
Three Rolls Calender
Four Rolls Calender
Five Rolls Calender
I-Type
This style exsit in 2 roller ,3 rolls and 4 rolls calendering machine . Its upper and lower roller rotates anticlockwise among these series of hard pressure chilled rollers , so that obtain the desired thickness, width and surface or smooth a sheet of material such as paper, textiles, rubber, or plastics
L-Type
L style textile calender machine ,just as its name ,with its L-shaped roll arrangement and adjustable line forces in the top nip and rear nip ,which provide not only this specific soft handle effect, but also a multitude of other effects, including smoothness and density.
Z-Type
With the name of Z-style arrangement. In this type, each roller is perpendicular to another pair roller. You can face a lower level of heat in this type compared to the other two roller arrangements above.
Wide Application
*Rubber & Related Products :Applied to rubber and rubber related products,such as tires , conveyor belts , gaskets , rubber tubes, seals, rubber pads etc.
*Silicone Products : Silicone is often used in electronics, medical, food and other industries due to its good high temperature resistance and aging resistance.
*is also suitable for paper, film, nonwoven etc.
*Composite Materials : Used to produce the middle layer of composite materials, such as carbon fiber reinforced plastics (CFRP), etc., and calendering is used to ensure that the layers of materials are tightly combined.
*Plastics and Polymers: The calendering machine are also suitable for production of various plastic and polymer-based products, ideal for polyvinyl chloride (PVC), polyethylene, polypropylene, and other thermoplastic resins ,so that achieve desired surface finishes, thicknesses, and physical properties.
*Floor Tiles: The rolls calendering machine are widely used to manufacture rubber floor tiles, which are widely adapted for playgrounds, gymnasiums, or high-traffic areas. You can cut them to meet custom flooring needs.
*Rainwear:The commingled fabric and rubber polymer result in the formation of raincoats or jackets.
*Luminous Ceilings:The calendering machine are also widely used to form very thin rubber sheeting that you can use in your ceilings.
*Furniture Upholstery: Rubber webbing replaces jute webbing because of unmatchable strength, flexibility, and durability. You can use it on various furniture accessories to make them aesthetically pleasing.
* Frictioning of fabrics for bicycle/motor cycle/auto tyres
* Nonwoven Fabrics in Disposable Diapers Nonwoven Fabrics in Car Seats Magnetic Tape
Simptek Calender Machine Advantage
Customizability: The two-roller calender machine can be customize and tailored in different configuration as per your specific work requirements.
Controllability: By adjusting the pressure and clearance of the rollers, the thickness and texture of the rubber can be precisely controlled.
Efficiency: The calender can produce a large amount of material continuously, which greatly improves the production efficiency.
Versatility: The machine has a wide range of applications in material processing and is suitable for many types of materials, such as rubber, plastic, silicone, food and so on. This versatility makes it suitable for almost all production needs.
Environmentally Protection : the two Rolls Calender Machine can be equipped with a recycling system to minimize energy waste and reduce the impact on the environment.
Stability: the calendering machines are usually very robust, capable of continuous operation, stable performance and long service life, but requiring less maintenance
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