Tech Columns | MONOVATE Co., Ltd. | Stainless Steel Tanks for Pharma, food and semiconductor companies

“Slant-Bottom Container”: An Advanced Type of Stainless-Steel Container

Posted on September 21, 2019 by monovate

Stainless-steel containers are often used at work, in factories, at home, as containers for storing raw materials, and as cooking utensils. Among those stainless-steel containers, there may not be too many people know “slant-bottom container” yet.

This time, we will introduce “slant-bottom container” which is a little different from ordinary containers.

What is a "Slant-Bottom" Container"?

A slant-bottom container has a bottom sloping toward the outlet. So, even if the container is not tilted, the liquid will naturally collected at the outlet. This mechanism is excellent in liquid discharging performance.

Normal Flat-Bottom Containers: Waste of liquid

Because there is a certain distance between the outlet and the bottom of the container, where liquid remains. And the liquid waste happens due to the difficulty of discharging the entire amount of liquid.

What is “Buff Polishing”?

Posted on September 17, 2019 by monovate

A beautiful stainless-steel surface shall reflects like a mirror.

Do you know that this beauty was created artificially, not by the nature of the material?

In general, the surface of the stainless-steel container is polished by hand in a finishing method called “buff polishing”(or “buff finishing”).

What you'll know from this article:

1. What are the methods and effects of buff polishing?
2. What are the disadvantages of buff polishing?
3. What does "Electrolytic polishing" mean? Why shall it be recommended to those people who think "a little bit of contamination is horrible"?

What is Buff Polishing?

Why Stainless-Steel Containers getting rusted? How to avoid it?-Part2

Posted on August 29, 2019 by monovate

Measures to prevent rusting of stainless-steel containers

Make sure that no dirt, salt or moisture remains

Please wash the container to remove dirt and salt. After washing, never leave it in the wet place. Wipe it with a dry cloth and dry it well.

Be careful of scratches and "contagious rust"

We recommend you to handle the containers carefully in order not to make deep scratches where dirt and water could be accumulated. Please use soft sponge or waste cloth instead of metal or hard scrubbing brush when cleaning.
In addition, avoid contacting with other metals that are easy to rust for a long time could prevent the “contagious rust”.

Why Stainless-Steel Containers getting rusted? How to avoid it?-Part 1

Posted on August 17, 2019 by monovate

Recently we received some inquiries like “Even though it was made of stainless steel, it soon got rusted” from our customers.

Stainless steel is a very rust-resistant alloy of iron.

Indeed, compared to iron, it is quite hard to rust, but it doesn’t mean it doesn’t rust at all.

Why is stainless steel so resistant to rust?

When exposed to air, it will form a self-healing barrier!

When exposed to air, it will form a self-healing barrier!In stainless steel, chromium bonds with oxygen in the air (=oxidation) before iron, which causes rust, and forms a very thin passive film (protective coating) of a few nanometers.

The passive film is resistant to chemical change and it is so strong that can prevent iron from oxidation(=rust).

Passive coating can be damaged and torn, but it can self-heal in a moment, so it does not leave room for iron to rust.

When shall it be replaced? Replacement Guidelines for Packing/Gasket for Stainless- steel Containers – Part2

Posted on August 1, 2019 by monovate

You even can just buy one packing and one part

Consumables such as packing, lid, and lever band that come with your container can be purchased separately.
You can quote the price to the supplier or contact us via the inquiry form.
If you do not know the type of container or packing, please contact us with the following information.

Introduction of consumables and optional parts

For closed container with catch clip [CTH] [CTB]

The catch-clip type sealed container is made by all stainless steel, which can be easily sealed with a catch clip attached to the body.

Type A silicone packing [PQA]

Clip type sealed container (Example: CTH -18 to 47 H/CTB) Standard attached packing.
*There is an option of different materials.
*Its color is black.
*FKM (fluorinated rubber) Model: [PFA]
*EPDM (ethylene propylene rubber) Model: [PEA]
*NBR (nitrile rubber) Type: [PNA]
*CR (chloroprene rubber) model: [PCA]

When shall it be replaced? Replacement Guidelines for Packing/Gasket for Stainless- steel Containers – Part1

Posted on July 11, 2019 by monovate

“Packing” and “gasket” are commonly used for sealed stainless steel containers and for connections to piping and peripheral components.

Because they are consumables, it is necessary to change them at the appropriate time. How often do you change the container?

The actual replacement time varies by the frequency of use and the contents, so this time we have summarized the general replacement guidelines for the silicone rubber seals [PQA] [PQB] [PQL] that come with standard airtight containers of our company.

Replacement guidelines for packing and gasket

When degraded

Is the packing worn out, broken or chipped?

If the packing is damaged, it may cause foreign matter to get mixed in, so please replace it with a new one immediately.

In addition to the cause of foreign matter, it can also cause leakage of contents or loss of sealing.

What is a “stainless-steel-container-without-gaps-that-can-shorten-the-cleaning time”? – Part 2

Posted on June 24, 2019 by monovate

In Part 1, we introduced about the dirt on the curled part and how to deal with it.

Stainless-steel beaker without folding crease

By eliminating edge wrapping and folding at the end of the container where dirt accumulates, the cleaning performance will be improved.

We made some experiments to compare those stainless-steel beakers　[translated from Japanese]

What is a “stainless-steel-container-without-gaps-that-can-shorten-the-cleaning time”? – Part 1

Posted on June 12, 2019 by monovate

Have you ever encountered situations like those?

The contents and dirt got into the edge of the container and could not be removed.
Troubled by the accumulated dirt on the handle.
In the cleaning process, it takes a long time to remove the dirt and cleaning fluid entered into the gap of the container.

If dirt or foreign matter gets into the gap of the container, it is not easy to remove them.

Not only does it take time for the cleaning process, but dirt and cleaning fluid that cannot be removed may cause contamination.

So, what kind of stainless-steel container can shorten the cleaning time?