How To Customize A Banana Roller With Wrinkle Removal And Amplitude Expansion?

Definition of curved roll:
Curved rollers, also known as bending rollers or banana rollers, are used to stabilize sheet products in the production process, including paper sheets, fabrics, and nonwovens. The arc roller is roughly composed of three parts: the mandrel, the roll surface, and the support.
The mandrel is fixed when it works, and is the carrier of the whole roll, and the angle can be adjusted by support. The roller surface is composed of a series of roller sleeves, bearings, connectors, etc. that can be rotated briskly, and there will be a layer of rubber sleeve outside the curved roller of the rubber surface, and the rubber sleeve material and formula used are different according to different occasions.

The working principle of the curved roller:
Because the roll surface is curved, the contact area goes from short to long as the material passes through the high point of the arc, resulting in a force from the middle to the edge of the material. Thus playing a role in eliminating wrinkles.

The function of the curved roller:
It is to remove wrinkles on the page by stretching the format in different production processes. Similar to roll cladding products, the location and operating environment of the curved rolls need to be taken into account during the customization process, so that the long-term stability of the curved rolls can be guaranteed even in the most demanding environments. Customized curved rollers can be optimally adapted to a wide range of operating variables, such as operating speed and ambient temperature.

Classification of arc rolls:

• According to the material of the roll surface, the curved roller can be divided into the curved roller with rubber surface, the curved roller with the metal surface and the arc roller of other materials (such as surface addition or spraying Teflon layer).
• According to the structure, the arc roller can be divided into fixed arc height and adjustable arc height arc roller. Among them, the advantage of the adjustable arc height arc roll is that the optimal amount of bending can be set even if the type, thickness, width, tension, etc. of the base material changes.
• The arc roller is divided into two categories: the driving roller is equipped with a pulley and other transmission devices on the side of the arc roller, and the driven roller is driven by the friction between the material itself and the roller surface. All rolls require a critical physical acceleration called inertia at start-up. The roll must not work due to the size of the inertia. The weight reduction of the rotating part makes it easier to make the starting inertia of the arc roll superior, and it is not easy to slide relative to the material. In general, the best flattening effect can be achieved by the active plus passive method.

The following materials are generally used for rubber sleeves according to different applications:
1. Nitrile rubber
Nitrile rubber can be widely used mainly because of its excellent comprehensive performance and relatively high cost performance, but the disadvantage is that the wear resistance and high temperature resistance are poor, so it is easy to age.
Suitable models are: slitting machine, coating machine, rewinding machine and other equipment in conventional environments.
2, EPDM rubber
The degree of temperature resistance and anti-aging is better than that of Ding Nile, and some of the properties are inferior.
3. Silicone
Silica gel has a stable molecular structure, its temperature resistance and wear resistance are outstanding, and because of its safe and non-toxic characteristics, it has an irreplaceable role in medicine, food and other fields.
Suitable models are: winding vacuum aluminizing machine, medicine, food machinery.
4. Polyurethane
The outstanding property of polyurethane is that it has super wear resistance, so it is more suitable for harder substrates, such as non-ferrous metals, steel, etc
Suitable models are: strip steel and aluminum strip seam separator
5, Teflon
Teflon rubber sleeve is commonly known as heat shrinkable tube, which has the characteristics of drug resistance, adhesive release, anti-static and so on.It is more suitable for the wet end of papermaking machinery, gluing and chemical environments.

How to customize a suitable arc roller, you need to pay attention to the following points:
1. Type of material
The type of material directly determines the choice of curved rolls, and hard materials will definitely cause wear and tear on relatively soft objects. So so
For newsprint, printing paper can choose metal curved rollers, while film, capacitive film and some other films need to choose glue
The Shore hardness of the rubber surface should also be adjusted differently according to different materials, so as not to wear the material or damage the rubber surface
Suitable. Some metal sheets, etc., can choose polyurethane materials.
In some occasions where bonding is required, a Teflon sleeve or spray coating is required.
Pharmaceutical, chemical corrosion and other environments usually require special treatment, and stable materials such as silica gel can be selected.
2. Device type
The type of equipment also has a considerable relationship with the choice of curved roller, the type of machine, the speed of the vehicle and the working environment. compare
Such as high and low temperature, fast speed, etc.
3. Size customization
After understanding the above two conditions, a most suitable arc roll also needs the appropriate size, according to the material of different widths,
The installation space of the equipment is individually customized.
4. Parameter configuration
1) A good arc roller needs to have the condition to achieve the best flattening effect within the working speed range
The impact on material equipment is minimized. For example, in the working speed range of high-precision equipment, the runout should not be higher than 10 rolls
The overall diameter difference of the surface should not be higher than 5, the whole is extremely smooth, the transition is gentle, the rotation is flexible, and the inertia should be small enough and the mass
Light. And it has a fairly long service life.
2) The main selection parameters are:

• Type of machine: Material
• Roller position Paper weight
• Linear speed: Film thickness
• Web tension Working temperature
• Web width: Face
• Support: Spreader covering
• Spreader type

5.The fastest and most direct way is to send the drawings to the Chinese factory PRE, let the factory analyze the drawings, and communicate with you to make them directly.

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