Prevent foreign object contamination with enhanced sanitary stainless steel containers

Preventing Manufacturing Equipment from Becoming “Contaminants”

No matter how much you protect against external contaminants, it’s meaningless if the very machines you are
using become “contaminants” themselves.

Stainless steel products are originally known for their high sanitary properties, but Nitto Kinzoku Kogyo can
offer products that further reduce the risk of contamination.

Contamination PreventionConsultation

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Do You Have TheseConcerns?

  • Not sure which equipment is suitable for contamination prevention
  • Uncertain about the appropriate product grade to implement
  • Want to customize specifications for each device based on production processes and contents

Nitto Kinzoku KogyoSolves All
Your Concerns.

Three
Proposals from
Nitto Kinzoku Kogyo

1. Gap-free Containers


It’s not just about preventing contaminants from entering from the outside, but also about “not leaving
them in the container.” Even if the container is cleaned, contaminants such as dirt and cleaning fluid can
remain and cause contamination… That’s where “gap-free containers” come in to prevent this issue.

2. Rust-Resistant Containers


Stainless steel is already known for its rust-resistant properties, but our company also offers fabrication
using highly corrosion-resistant SUS316L and electropolishing. We propose materials and surface treatments
tailored to the contents.

3. Ideal for Small Batch, Diverse Production


Our products, made one at a time through welding and custom-made, are perfect for small batch, diverse
production. If you want to change specifications for each device, or just want to introduce one device at
first, consider our company.

\ Let Us Know Your Concerns about Contamination /

Contamination PreventionConsultation

1. Gap-free Containers

  • “Cleaning fluid and dirt get trapped in the rolled edge of the container and can’t be removed”
  • “Dirt accumulates in the gap of the handle, and I’m worried it might cause contamination”

Nitto Kinzoku Kogyo’s “gap-free containers” are ideal for customers with these concerns.

Our products have been widely adopted in fields such as pharmaceuticals and
food industries, where contamination is a major concern
. Based on such achievements, we offer a
lineup of stainless steel products with containers without gaps
in the rolled edges and handles without gaps
, minimizing contamination risks.

Of course, depending on the environment in which the containers are used and the risks involved, it is also
possible to customize the shape of conventional containers to make them less
likely to allow foreign matter to enter
. If you can provide us with information about the actual
working conditions and the risks involved, we can propose the most suitable products to suppress
contamination.

【Adopted by a Food Additive Manufacturer】High-Viscosity Liquid Storage and Discharge Container with Square
Bar Hakama
~Preventing Water Residue on the Tank Bottom~

The distinctive part of this container is its “bottom.” The bottom of the one-tapered type stainless
container【KTT】, which serves as the base of this container, is normally equipped with a hakama for
raising the bottom, which could potentially allow water or powder to remain in the gaps.

Therefore, in this container, the hakama was changed to a
square bar so that it can be properly cleaned without leaving any dirt behind
. Wiping down
after cleaning is also easy. In addition, the handles are welded
seamlessly in a sanitary specification
, preventing foreign matter from entering.

By eliminating potential areas for dirt and other residue to accumulate through custom processing, the
risk of foreign matter entering the container is reduced.

2. Rust-resistant Containers

  • 「Concerned about corrosion with regular stainless steel materials」
  • 「Not sure what specification to adopt」

In addition to SUS304, which is widely used worldwide and is also used as a standard material by our company,
you can choose SUS316L as well.

SUS316L is a high-grade stainless steel material, made by adding molybdenum to SUS304 and further reducing
its carbon content. It is known for its high corrosion
resistance, particularly in welded areas
.

If a container rusts, the rusted part may mix with the contents inside the container, or cracks may develop
from the rusted part, potentially leading to container damage. SUS316L is the ideal material to reduce such
risks. At Nittokin Metal Industries, we can manufacture products normally made from SUS304 using SUS316L
instead. We will propose suitable specifications based on the contents and your requirements.

Enhance Sanitary Properties with “Electropolishing”

For those who want to further improve corrosion resistance and prevent foreign matter contamination, we
recommend “electropolishing”. Electropolishing is a polishing method
that dissolves metal ions from the metal surface in an electrolyte solution, smoothing the
surface
.

By applying electropolishing, the chromium concentration on the metal surface increases, making the
passive film
that prevents rust more robust
. Furthermore, in the case of buff polishing, foreign substances
such as oil and buffing powder can become embedded in the fine scratches caused by polishing. With
electropolishing, this concern is eliminated. In addition, the extremely smooth surface makes it less
likely for dirt to accumulate, making cleaning easier.

At Nittokin Metal Industries, we use dedicated fixtures according to the container shape, enabling us
to provide high-quality electropolished containers. Please consider electropolishing when seeking the
highest grade containers.

3. Ideal for Small-batch and Diverse Production

Our products are ideal for small-batch and diverse production
environments
as well as prototyping stages. We provide
stainless steel container units tailored to the contents and existing equipment for each production
process.

It is possible to change the size according to the customer’s needs or modify the specifications
individually for each content. This contributes to the realization of a flexible production line that
adapts to the prototyping stage or responds to market
needs
.

\ We can also accommodate Ponchi illustrations and drawings /

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Discuss foreign matter preventionConsult us

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