Frequently Asked Questions

Calender
Testing Machine and Sample Machine
Roll
Coating Machine (coater)
Unwinder/Winder
Equipment modification

Frequently Asked Questions about Calender

Can a specific machine be added to a standard machine?: We can install any machine that you specify. Let us know the model.

Do you have standard machines?: Yes.

Can you manufacture customized machines?: For customized machines, you are requested to submit the specifications and plan drawings.
Please contact us if you are unfamiliar with preparing specifications and plan drawings.

What would be a rough estimate?: The price varies depending on the specifications. Please send us your specifications or contact us for more details.

How do I clean the jacket roll?: You can manually clean it with a scraper, or you can automatically clean it by using a motor to ensure safety.

What safety measures do you take to prevent entrapment?: We use area sensors and rope switches.

What is the temperature accuracy of the rolls in the width direction?: Induction-heated rolls have an accuracy of ±1 °C, whereas rolls heated with medium circulation have an accuracy of ±2 °C.

What is the display resolution for pressure setting?: Standard hydraulic equipment has 0.1 Mpa. For more accuracy, the equipment configuration should be changed.

How do you set the applied pressure?: You should manually set the pressure while viewing the load cell indicator or you can use the communication function for digital setting.

Have you ever exported manufacturing equipment for rechargeable batteries?: Yes, we have exported the equipment to Korea and China.

What is a reverse-bend mechanism?: The mechanism eliminates roll bending by applying pressure to the shaft ends of the roll and is used in, for example, a rechargeable battery that cannot have the axis cross function.

What is the axis cross function?: The function eliminates roll bending. Slightly crossing and shifting the center of the roll provides the same effects as that of a crown roll. However, the base material can be displaced sideways, for which countermeasures are necessary.

How should the roll surface hardness be determined?: We are unable to determine the hardness.
This item is know-how of manufacture held by your company and thus should be tested on a demonstration machine.

How should the roll diameter be determined?: We can calculate the deflection and strength of a roll but cannot determine the diameter.
This item is know-how of manufacture held by your company and thus should be tested on a demonstration machine.

Frequently Asked Questions about Testing Machines and Sample Machines

May I witness the test?: Yes, but you may have to wait on the site for the setting up and adjustment that can take long.

What types of sheet coaters are available?: Gravure coaters (single-sided coating) and double gravure coaters (double-sided coating) are available.

Do you have a UV irradiator?: Yes.

What is the runout accuracy of the backup rolls that you use?: We use the backup roll with bearings having the runout accuracy of 3 μm, allowing high-precision coating.

Can a die coater be used for intermittent coating?: Yes.

What is the machine speed of the multi-coater (m/min)?: The speed is from 0.5 to 30 m/min, but can be limited by various conditions such as the coating thickness.

Can lamination be done with the multi-coater?: Yes.

What are the paper tube sizes that can be loaded on the multi-coater?: The sizes would be 3 and 6 inches.

What is the maximum size of the base material that can be loaded on the multi-coater?: The width is up to 500 mm. The diameter is up to ⌀300.

How many types of coater heads are available for a multi-coater (roll to roll)?: We offer six types: a slot die, a knife, a knife reverse, a gravure, a small diameter gravure, and a fountain reverse.

What is the highest temperature set in the drying oven?: The highest temperature is 150 °C. The temperature can be set for each chamber.

What type of drying method does the multi-coater use?: It uses far-infrared light and hot air. The multi-coater has four chambers with the length of 1.5 m.

How much does the test cost?: 400,000 yen per day (operator and cleaning fees Included).

Frequently Asked Questions about Roll

Is ceramic thermal spraying or laser engraving available?: Yes.

Can you do a mat finish?: Yes.

What are the largest dimensions of the roll that you can manufacture?: Up to ⌀300 × 3000 mm.

What is the maximum runout accuracy?: The accuracy depends on the size; a single roll can achieve an accuracy of up to 1 μm.

What is the minimal surface roughness?: We can offer an ultra-mirror surface finish of 0.05 s or less.

Frequently Asked Questions about Coating Machines (Coaters)

What safety measures do you take to prevent entrapment?: We use area sensors, rope switches, and interlocks.

What is your delivery time?: The delivery time varies depending on the specifications, but is typically about 8 months (a shorter delivery time is available upon request).

What is the maximum accuracy of the runout of assembled rolls?: The accuracy is 3 μm or less as an actual value.

Can the slit die be heated?: Yes.

How do you clean the slit die?: We disassemble the slit die and then clean it.

How can I change the coating width of the die coater?: You can change the width with the spacers.

What is the maximum wet thickness for thick film coating?: The thickness depends on viscosity, but can be up to several hundreds micrometers.

What is the minimum wet thickness for thin film coating?: The thickness depends on viscosity, but can be 1 μm at the minimum.

Can existing coaters be modified?: We can replace the coaters, but we do not modify or partially change the coaters.
You are requested to provide mechanical and electrical drawings of the existing equipment for us to analyze how they fit together.

Can you sell a coater alone?: Yes. For customized machines, you are requested to submit the specifications and plan drawings.

What temperature can the rolls be heated to?: Up to 400 °C.

Can a die coater perform intermittent coating or stripe coating?: Yes.

Can a sheet coater perform double-sided coating?: Yes. The double gravure coater is available for the purpose. (Our Patented Technology)

Can you perform roll-to-roll coating on both sides of the roll?: Yes.

What is the service life of a doctor blade?: The service life depends on how it is used, and we cannot provide a general answer.

What is the service life of a gravure roll?: The service life depends on how it is used, and we cannot provide a general answer.

What determines the type and depth of engraving on gravure rolls?: The type and depth of engraving is determined by the coating thickness of and the solid content in the coating liquid during drying.

How do I adjust the coating thickness in the gravure coater?: How to change the coating thickness depends on the type and depth of engraving, and the gravure roll needs to be replaced.

Can you do a coating test?: Yes.

Can a specific machine be added to a standard machine?: We can install any machine that you specify. Let us know the model.

Do you have standard machines?: Yes.

Can you manufacture customized machines?: For customized machines, you are requested to submit the specifications and plan drawings.
Please contact us if you are unfamiliar with preparing specifications and plan drawings.

What criteria should be used to select a coating machine?: The selection of a coating machine depends on various factors such as viscosity, base material, and line speed. Please contact us for more details.

Frequently Asked Questions about Unwinder/Winder

What would be a rough estimate?: The price varies depending on the specifications. Please send us your specifications or contact us for more details.

What methods are available for tension control?: We offer full automatic control (feedback control), semi-automatic control (roll-diameter tension control), and simple winding with a torque motor.

What type of fixing methods do you use for paper tubes?: We normally use an air shaft with lugs, which appear to fix a paper tube when air is supplied into the air shaft. However, a larger paper tube is heavier. This requires more workhours for replacement. Thus, a chuck method that receives the two ends of the paper tube is also available. The disadvantage is the high cost of the machine.

What is EPC?: Edge position control (EPC) equipment is used to align the edges of the base material for rolling. The equipment is used with sensors and actuators.
Equipment to be used depends on the type and weight of the base material.

Can you change the width of the standard machine?: Yes, we can, but an additional design cost will slightly increase the cost.

Can a specific machine be added to a standard machine?: Yes.

Do you have standard machines?: Yes.

What methods are available for tension detection?: Two methods are available: using a tension detector; and controlling the speed by detecting the position of a dancer roller.

Can you manufacture customized unwinders and winders?: Yes. Please send us your specifications and plan drawings for estimate creation.
(Please contact us if you do not have the specifications)

Do you have standard unwinders and winders?: Yes.

Frequently Asked Questions about Equipment modification

Can the system be installed in an overseas location?: Yes.

Can you repair or modify purchased products such as motors and reduction gears?: No.

Can you repair or modify slitters?: No.

Can you modify machines such as metalworking machines and office equipment, other than converting equipment?: No.

Can you repair the machine?: We can replace units, but do not repair individual components.
Examples: broken coupling, a broken belt, and a broken bolt.

When I provide no drawings of the existing equipment, would it cause any problem?: It causes no problem. However, to avoid an additional investigation fee, please prepare the drawings if possible.