Tuesday, December 25, 2012

Another Solar Project

Fukushima Solar Inc. and Minami-soma city announced a project of Minami-soma Agri-park on 21st.

Fukushima Solar Inc. is a venture capital and Minami-soma is a city in Fukushima prefecture where many people still suffer from Fukushima Nuclear Power Plant accident caused by big earthquake and tsunami in March 11th last year.

In this park they generate 500kW by solar panels.
100kW is used for agriculture in this park and remaining 400kW is sold to Tohoku Electric Power Co., Inc.

by Fukushima Solar Inc.

This scheme is aimed at revitalizing agriculture in this area by self-supplied energy.

For details of steel belts in photovoltaic module production, go to

Contact by email: overseas@dymco.co.jp

Tuesday, December 18, 2012

Japan's New Leader Tackles Strong Yen

'Revitalize the Japan's business activities' was his theme during campaign.
This initiative begins with weak yen.
High evaluation of yen has hampered purchase of Japanese products overseas.
Japan's economic leaders welcome Mr. Abe to the post of Prime Minister.

We hope that depreciation of yen will bring chances to buy Japan-made products overseas.

Contact by email: overseas@dymco.co.jp

Tuesday, December 11, 2012

Small EV

Although the Japanese government is OK with setting up laws for new  category of very small cars, its legislation is very slow.
But the market is active.
The Japanese automakers are selling new small EVs that are acceptable in the present law.
The picture above is just one example. 
This EV is just for one person,
weighs 420 kgs, runs 50 kilo meters when fully charged.
It takes 6 hours to fully charge its cells.
This handy small cars are getting very popular in this country.
It is clean and convenient in moving around on narrow streets.

Still improvement of EV batteries are awaited in lower cost, longer cruising range, and shorter charging hours.
Why not develop EV batteries in roll to roll system or continuous process using steel belts?

Contact by email: overseas@dymco.co.jp

Monday, December 3, 2012

Steel Belt Material Tensile Strength Test Unit

We use tensile stainless steel grades for our belts such as SUS304H.
Sometime we are required to measure tensile strength for each material lot.
We have a test unit as above and confirm tensile strength of material.

Contact by email: overseas@dymco.co.jp

Thursday, November 29, 2012

World Storage Battery Market US$250 billion in 2020

Japan's Ministry of Economy, Trade and Industry estimates that the market of storage batteries in the world will grow from US$64 billion in 2011 to US$250 billion in 2020.
The Japanese government aims for 50% share in this market.

Especially in Japan impact of 3.11 is still enormous.
Many people tend to prepare storage batteries in case of emergency.
Also nuclear power plants are getting closed and the industry faces possibility of electricity shortage.
More and more storage batteries are being introduced in factories, hospitals, public buildings and homes.

The Japanese government supports both development and purchase of storage batteries.

Below is one of tips to help production of battery materials and plastic films in roll to roll process.
This roll is made by a shaft and thin metal roll.  Air is between this shaft and metal roll. 
Inner air pressure can be controlled in the range of 0.3MPa.
Air roll diameter in this picture is 260mm.

Contact by email: overseas@dymco.co.jp

Wednesday, November 28, 2012

Yen Depreciation

Value of the Japanese Yen went down in mid-November and
still today it stays at 82 yen to a dollar.
For overseas customers
purchase cost of Japanese products goes down.
Also business trip cost to Japan goes down.
We welcome your visit to our company.
Especially we have models as below;

- vacuum conveyor
heating conveyor
- clean room conveyor
- food processing conveyor

If you need to try conveyance of some specific material,
please kindly bring those and try them on our conveyors.

Contact by email: overseas@dymco.co.jp

Tuesday, November 27, 2012

EV, its sales is stagnant

It is reported that sales of EV, Electric Vehicles, is not going on well.
They point out 2 reasons.
Price is high and its cruising range is limited.
These reasons lie in batteries.
EV batteries are expensive and their capacity is not much.
There is need to be improved.

If you think of roll to roll process in production of batteries,
why not try steel belts to increase process speed?
Below is image of continuous process.
Battery materials are laminated between upper belt and lower belt on and on.

Contact by email: overseas@dymco.co.jp

Tuesday, November 20, 2012

Cerium Recycling and Steel Belt

It is reported that DOWA HOLDINGS Co., Ltd. of Japan has reached to find a method to recycle cerium used for polishing optical lens and highly precise glasses. 

Steel belts are used to convey those powder substances and small parts taken out of process or used electric appliances.

Heat resistiveness and rigidity are evaluated in these applications.

Contact by email: overseas@dymco.co.jp

Wednesday, November 14, 2012

Nipping and smooth metal surface for film production (2)

We need to talk about 'Air Roll.'
This is a metal roll for film forming and lamination.
It is made by outer surface of thin metal roll, roll shaft, and air between a shaft and a outer metal roll.
Thickness of this outer metal roll is around 0.2 to 0.4mm.
When you push its roll surface, you can feel that the pressed area sinks a little.
Pressure inside this roll is 0.3Mpa max and is adjustable.
So we can set different inner pressure exactly as we change and try several rubber rolls to get the best nipping.
Yet this outer metal roll is smooth and does not damage films.

Contact by email: overseas@dymco.co.jp

Tuesday, November 13, 2012

Nipping and smooth metal surface for film production

It is reported that
ZEON CORPORATION, one of leading Japanese chemical companies,
increases production of LCD Antireflective Film by 230% and that
Nissha Printing Co., Ltd. , upholding Japanese printing technology,
also increases production of touch panels for tablet PCs by 30%.

When nipping and smooth metal surface are required for production of plastic films, why not try 'Air Roll.'

Contact by email: overseas@dymco.co.jp

Friday, November 9, 2012

Printed electronic heaters

This is on blood bags you find in hospitals.  It is not cold, but gets warm by heaters printed in plastic blood bag.  So blood inside is warm. 
It is expected that warm blood mitigates side effects of new blood when it goes through a body.

When circuits are printed on plastic films, surface of these plastic films must be dead flat.  Stainless steel vacuum conveyor serves dead flat surface and continuous printing on roll-to-roll stream.

Friday, November 2, 2012

Yokohama Day at Smart City Week 2012

Dymco had a seminar session at Yokohama India Center booth.
We introduced our seamless sleeves used as fuser rolls in printers and plastic film forming belts.

                                          URL http://www.steelbelt.jp

                           Facebook http://www.facebook.com/dymco.limited

                                    Blog http://dymcosteelbelt.blogspot.com/

Tuesday, October 30, 2012

DEAD FLAT Vacuum conveyor #5

Inspection also makes use of dead flat surface.
Vacuum conveyor keeps the same distance between measuring tools and objects on a belt by its flat surface.  Laser-type measuring machines and camera needs precise clearance from objects to capture their real figure.  Substrates, wafers, flat sheets, etc are inspected precisely and  continuously.
The picture below measures vertical fluctuations of the belt by laser.

Thursday, October 18, 2012

DEAD FLAT Vacuum conveyor #4

Printing can be done on paper, plastic sheets and films, cloth, non-woven fabric, glass, ceramic sheets and others.

The picture below conveys paper envelops.  Vacuum conveyor is inclined.
It is not set parallel to the ground.  But this conveyor keeps envelops on the belt.

                                URL http://www.steelbelt.jp

                        Blog http://dymcosteelbelt.blogspot.com/

Tuesday, October 16, 2012

DEAD FLAT Vacuum conveyor #3

Then what can be done on a DEAD FLAT vacuum conveyor?
It is printing.
Screen printing is now widely used in many process, such as writing circuits on print circuit boards and locating electrodes on solar cells with conductive silver paste.

                                URL http://www.steelbelt.jp

                        Blog http://dymcosteelbelt.blogspot.com/

Thursday, October 4, 2012

DEAD FLAT Vacuum conveyor #2

What about tracking?
Our vacuum conveyor is equipped with Edge Positioning Control Unit.
This unit controls belt tracking within a few milimeters.
When this conveyor runs for 8 hours a day,
horizontal belt fluctuations is within a few milimeters.

This belt runs straight, because the driven pulley shaft is controlled by Edge Positioning Control Unit.

             Steel belt video: http://www.steelbelt.jp/060video/video.php
                                      URL http://www.steelbelt.jp
                               Blog http://dymcosteelbelt.blogspot.com/

Friday, September 28, 2012

DEAD FLAT Vacuum conveyor #1

Mountain peaks are beautiful.  
Calm water in a lake settles our mind. 

Printing is done on paper, plastic films, ceramic plate, rubber, and cloth,
only if they are placed flat.  
How can we make them flat?
In addition to gravity, they become flat by vacuum.

The picture below is measurement by laser
on vertical movement of vacuum steel belt surface.
It is controlled within 50 microns.

                    Steel belt video: http://www.steelbelt.jp/060video/video.php

                                       URL http://www.steelbelt.jp/

                                   Blog http://dymcosteelbelt.blogspot.com/

Tuesday, September 25, 2012

On Steel Belt No.18 Suction and vacuum conveyance by perforated belts

The last one, very popular perforation is as below:

Suction and vacuum holes are all over the belt.
This works to hold very small parts and very thin objects like paper, plastic sheet and metal sheet.  Flat surface can be realized by suction and vacuum.

Wednesday, September 19, 2012

On Steel Belt No.17 Positioning and takt drive by perforated belts

Similar pattern is as below.

Locations of these blue parts or cases do not move beyond standing plates.

Monday, September 17, 2012

On Steel Belt No.16 Positioning and takt drive by perforated belts

The second most popular perforation type is as below,
Parts are directly set on square holes in a belt.

Tuesday, September 11, 2012

On Steel Belt No.15 Positioning and takt drive by perforated belts

We'd like to show some of very popular perforation on belts.
By adding perforation belts can do additional jobs.
The first one is as below.

Jigs are fixed on every pair of holes on a belt.
Those jigs accept parts and these parts receive a certain process, assembly or inspection.  This whole conveyance is done by takt drive, using sprocket pulley pin holes.

Friday, September 7, 2012

Steel Belt Dymco won Yokohama Chizai Mirai Enterprise Award

The city gov't of Yokohama granted Yokohama Chizai Mirai Enterprise Award to 37 small and medium-seized companies in Yokohama out of more than 100,000 companies in this area.  Steel Belt Dymco won this award.  The picture below is the certificate.  Management based on Innovative products and service and their intellectual properties are evaluated.
(Japaese page)

Friday, August 17, 2012

On Steel Belt No.14 Welded Endless Belt #4

Above is a figure of stress (S) against the number of cycles to failure (N).
This curve begins to get flat at over one million bendings and becomes flat at over ten million bendings.
Pulley diameter = Belt thickness x 700

Coefficient 700 is set to make the same stress as the one in the chart above so that the belt endures 10 million bendings.

When bendings are not so many,
700 can be 600 or 500
This is to be discussed and adjusted when we decide belt specifications.


Tuesday, August 14, 2012

On Steel Belt No.13 Welded Endless Belt #3

Below is shown relationship between tensile load and elongation.
Steel belts are made by tensile stainless steel.
Tensile metals are stronger than Copper and Low-carbon steel.

But welded area is weak due to heat during welding.


Sunday, August 12, 2012

On Steel Belt No.12 Welded Endless Belt #2


When we try steel belts, we set pulley diameter first.
Pulley diameter = Belt thickness x 700
For instance,
when belt thickness is 0.1mm,
pulley diameter is 70mm.
This is a norm.
Depending on applications,
It may be x 800, or x600, or x400.
The picture below, in our standard conveyor,
Pulley diameter 50mm=Belt thickness 0.15mm x about 350.

Tuesday, August 7, 2012

On Steel Belt No.11 Welded Endless Belt #1

DYMCO employs plasma welding mainly,
which is appropriate for thin stainless steel,
rather than TIG and laser welding.
The picture below is cross section of the welded area in a 0.3mm-thick belt. Half-round stripe areas are melted by welding heat, while Diamond-shaped black points are positions where hardness was checked. In this way we know hardness and other characteristics in steel grades and welding conditions.

Thursday, August 2, 2012

On Steel Belt No.10 Ring-Rolled Endless Belt: Advantage#3

Standard thickness 0.04mm and more is extremely thin for steel belts.  
This enables to use small pulleys in compact design. 
The picture below is an example of 2-stage reducer.

Tuesday, July 31, 2012

On Steel Belt No.9 Ring-Rolled Endless Belt: Advantage#2

Standard thickness 0.04 to 0.3mm ±0.005mm
This critical thickness tolerance is a key for precise power transmission.

The picture below is an example of reducer.

Monday, July 16, 2012

On Steel Belt No.8 Ring-Rolled Endless Belt: Advantage#1

Hardness and tensile strength of the welded area is equal to parent material.

Generally a welded area of SUS304 is weak.

Hardness of this area goes down to two thirds of parent material.

However, due to ring-rolling process the welded area regains the original strength. Fatigue strength chart below shows this advantage.

Friday, June 29, 2012

On Steel Belt No.7 Producible range of Ring-Rolled Endless Belt

Standard thickness 0.04 to 0.3mm ±0.005mm
Standard width 10 to 30mm±0.25mm
Standard endless length 150 to 4500mm
Length tolerance: 150 to 1000 ±0.5mm, more than 1000 to 4500 ±1%


Monday, June 25, 2012

On Steel Belt No.6 Manufacturing of Ring-Rolled Endless Belt

Process flow
1. slitting
2. welding to make an endless belt

3. heat treatment of the endless belt

4. ring rolling

Friday, June 15, 2012

On Steel Belt No.5 DYMCO Ring-Rolled Endless Belt

Steelbelt applications are mainly two,
power transmission and transportation.

Our ring-rolled endless belts are used for power transmission,

for belt thickness, hardness and tensile strength are completely uniform in all belt length. This feature realizes precise power transmission.

Wednesday, June 6, 2012

On Steel Belt No.4 Steel Grade

There are many kinds of steel grades.

Among them only tensile grades can be used for steel belts, for only tensile steel stands repeated rotations.

Usually we use the tensile grade of SUS 304. Hardness also shows high value.

Monday, May 21, 2012

On Steel Belt No.3 What is a steel belt?

It is made from a thin metal strip.

There are both open type and endless type.

Belt functions are two, power transmission and conveyance.

This picture is an example of power transmission belts.

Friday, May 11, 2012

On Steel Belt No.2 Rivets to Butt Welding

Rivets made pulley diameter large and rotation was not smooth.  This caused shift to butt welding, which made pulley diameter smaller and many type of belts emerged including thin steel belts.

Monday, April 30, 2012

On Steel Belt No. 1 1910

Steel belt history begins around in 1910 when they were used for the first time in the world.  At that time belts were made endless by rivets.

Wednesday, April 25, 2012

Welcome to DYMCO for trial of belts!

Specifications of belts and conveyors are not decided instantly.

If you get interested in trial or need to determine functions of belts and conveyors, why not visit us!

We have demonstration units such as heating or vacuum conveyors in the picture. Send material or objects beforehand, then we will be ready for a test when you arrive here.

Tuesday, April 24, 2012

Steel Belt and Tracking 12 Edge Positioning Control Case 2

The conveyor in the photo is equipped with EPC and dries solid sugar. Belt width is 350mm.

Before introduction of EPC, V-guide often came off the belt and production halted. Now this trouble does not happen any more for this user.

Friday, April 20, 2012

Steel Belt and Tracking 11  Belt Dimension

This chart above recommends tracking methods to various belt dimensions.

Yellow area: Crown pulley and V-guide
Red area: EPC, Edge Positioning Control
Blue area: requires further research on feasibility of EPC

We will continue our study to improve function of EPC on high temperature, wide belts, and high belt speed.

Wednesday, April 18, 2012

Thank you very much for your visit to FILM TECH JAPAN!

To all visitors to DYMCO at FILM TECH JAPAN 12.04.11-13,
we’d like to express our hearty thanks.
Picture in the right shows film vacuum conveyor displayed at this show.
It holds paper, films, and tiny electronic parts with vacuum. Edge positioning control system is equipped for tracking.
Please kindly send your comments and questions on our products and service to overseas@dymco.co.jp

Wednesday, March 21, 2012

Steel Belt and Tracking 10: Edge Positioning ControlCase 1

EPC worked when belt width was 500mm and conveyor length was 3000mm. Temperature was from 20 to 300 degrees C. In general under these temperature there appear deformations and waves. These deformations hamper tracking by crown pulleys, while V-guides begin to deteriorate due to heat. However, this 500mm-wide belt rotated fine with EPC and we could obtain data as below that shows waves along belt width direction.

Wednesday, March 7, 2012


DYMCO welcome you at "Film Tech JAPAN" 3rd Highly-functional Film Technology Expo.

-Date: April 11 Wed - 13 Fri, 2012

-Time: 10:00-18:00 Last day of 13th 10:00-17:00

-Place: Tokyo Big Sight

-Dymco Booth : EAST 16-2

-Language: Korean, English, and Japanese

-Displayed are Seamless SUS belts and Air Rolls for nipping application in extrusion, rapid cooling, lamination, and double press configuration.

-Admission: Please kindly register at URL: http://www.filmtech.jp/en

-Meeting appointment: overseas@dymco.co.jp +81-45-780-5575

We look forward to seeing you at Film Tech Japan !

Wednesday, February 22, 2012

Steel Belt and Tracking 9: Air source of Edge Positioning Control

0.5MPa of air pressure is required in minimum, while during operation it uses only around 50 ml/min. On air supply we do give you advise. We recommend a handy compressor when you do not find air supply utility. Or employment of a booster or increase of bore diameter may be adequate when pressure is not prepared to the full extent.

Tuesday, February 14, 2012

Steel Belt and Tracking 8: EPC / Edge Positioning Control

Edge positioning is controlled by difference in pressure supplied to these 2 cylinders.
When the belt goes straight, supplied pressure is constant.
On the other hand when the belt leans to either right or left direction, air cylinder pressure on the leaned side is increased by control circuit, moving the belt to the opposite side.

Air cylinders are required to be heat-resistive, anticorrosive, and others, depending on operating conditions.

Friday, February 10, 2012

Steel Belt and Tracking 7. EPC / Edge Positioning Control

These are cylinders in EPC systems. In general they are available in the market, not special parts. 2 cylinders are required in one conveyor. They are placed on both sides of the driven pulley shaft to move the shaft on the length direction for adequate tension.

Saturday, February 4, 2012

Steel Belt and Tracking 6. EPC / Edge Positioning Control

Our EPC, Edge Positioning Control targets wide conveyor belts under heat and hot dry air.

The whole system is as shown in the picture.