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In the world of manufacturing and quality control, achieving precision in color is critical.  This article will guide you through the challenges and technological solutions in the field of color measurement, illustrated by the case study of Benjamin Paints. Explore how advanced techniques and cutting-edge tools can significantly impact the visual perception of color, delivering […]

Although many people may think that achieving, the right color of a product is simple, in reality there is a sequence of very important of steps to follow in order to achieve the required color. We’ve already mentioned this in our recent article dedicated to our Romanian client, Benjamin Paints. Today we will see how to examine and check the color of molds and plastic components.

For an injection mold manufacturer, for example, finding defects in the color of an object represents a failure in quality control.  This results in the product being sold at a discounted price or even discarded, even before it is placed on the market.

That is why it is so important for the manufacturer to get the correct color.

Failure to achieve the correct color of a product before placing it on the market implies a wide range of issues that involve not only the economic aspect, but also puts the reputation and reliability of the brand at risk. Not to mention functionality issues:   for example when highly reflective colors that are required for certain applications, get unsatisfactory results.

Getting the colors right is essential, but how?

check the color of plastic components

Photo by Canva PRO

How can manufacturers check the color of molds and plastic components?

You may have already heard that colors are identified subjectively and emotionally. There is a lot of truth to this and precision work is at the base of it, by making sure that the color obtained is exactly the one specified.

Fortunately, technology has taken color measurement and control to the next level. While visual assessment is still the first step, there are tools like professional colour difference meters and color matching cabinets, that make color quality control much easier and more accurate.

But having state-of-the-art instruments isn’t the only step manufacturers need to take to get the right colors. Getting the best results involves a gradual process where every single detail has to be considered.

Here are some of the most important aspects that a manufacturer needs to achieve the best results:

Having a trained eye: visual inspection

As mentioned above, the first filter for color control is through visual inspection. When color differences are noticeable, having an expert eye that carries out this first inspection will save time and resources. However, when the differences become difficult for the eye to see, it is then necessary to use specific measuring instruments.

Using the right tools: colour difference meters and color matching cabinets

To check the color quality, the go-to instrument is the colour difference meter (see the article “Colour difference meter: what it is and why it is important”).

In some cases, a colorimeter is all you need.  However, there are some cases where tolerances require the highest level of accuracy possible or the nature of the product and the material used to manufacture it, require other types of instrumentation to be used. For example, a color matching cabinet can come in handy when a neutral environment with uniform light is required.

Color matching cabinet

How to use a colour difference meter and a color matching cabinet?

Having the best measuring instruments on the market is not enough, if you do not know how to use them correctly.

Having an expert eye for visual inspection coupled with training for correct instrument operation and correct interpretation of the results, makes a big difference in ensuring that the quality control process is 100% reliable.

Those who buy SAMA Tools name-brand measuring instruments will be guided step by step, via remote or in person, when they choose to combine our training courses with the purchase of an instrument.

On-site training courses for colour difference meters and color matching cabinets

Nowadays, many companies require training courses combined with the installation of the instruments/equipment, directly on-site, in order to fully understand how to use the tools effectively and straight away.

Our trained technicians explain how to use the colour difference meters in order to be able to compare the various components produced, with all the reference standards imposed by their customers, and thus identifying any delta deviations from the color values. This evaluation allows them to make all the necessary changes in order to ensure excellent quality while avoiding any kind of dispute.

However, many sectors work a lot with translucent objects, which is why it is imperative to have a color matching cabinet as well.

The cabinet allows you to recreate a neutral environment with uniform light, where the tested components are not affected by anything around them.

Thanks to our courses, the instrument features are explained in every detail, allowing for a better assessment of the differences between the various colors, mainly in transparent molds, which are hardly visible to the naked eye.

Our customers can thus ascertain whether the production is in line with the required standards, or not.

Training course

SAMA Tools colour difference meter and Color matching cabinet training course

After the training course, instrument adjustment and periodic calibration.

As human beings, we are not perfect. Even when well prepared, human error is present, so establishing clear procedures for how to take measurements is essential to minimize human error.

Furthermore, each certified company can guarantee higher quality thanks to specific procedures.

Not only people, but measuring instruments can also sometimes be wrong, which means that periodic calibration and adjustments should be included in these procedures.

Quality control in molding

Many S.A.M.A. Italia clients work in the field of molds and plastic components.  These are often activities within the automotive and household appliances sectors.

To fulfil their mission, they work hard to find accurate and reliable tools that can improve and optimize the work surrounding quality control.

Our customers carry out quality control inspections in order to understand how much the colors of their productions differ from the reference standards dictated by the orders they receive.

SAMA Tools and color control of plastic molds

Companies that rely on us as their main supplier of instruments for their quality control activities, always receive professional advice from our qualified technicians who analyse their production to better understand what their specific needs are.

After this preliminary consultation, which is included in our service, customers  who are interested in color measurement and control generally, purchase the SA230 colorimeter and / or the SACAS276 color matching cabinet.

Technical consultant to check the color

SAMA Tools Consulting and technical explanation

How to reach us

In addition to color quality control instruments, we offer a wide range of non-destructive testing tools for a variety of applications.

Buying a SAMA Tools name-brand instrument gives you the security of being able to choose, at any time, the right training for your Quality Control, without wasting time.

Customer satisfaction is our main goal and we would be more than happy to see you become one.

So, if you need help choosing your color quality control instruments, you can always count on our technical advice.

Contact our technical department and call us at 0584/392342 – 0584/392453 or, alternatively, fill out the online form to contact us in writing.

 

How is it possible to be sure that the same object does not present colour differences?
We discover it in this article, read on because today we talk about the main colour measurement instrument: the colour difference meter.
You will understand all its features and you can see it in action in the video we made for you.

What is a colour difference meter?

The colour difference meter is a device used to measure chromatic differences, which allows performing accurate measurements of differences between all colour types of the same material, according to the international standards.

 

[Video] Do you need a colour difference meter – color meter?

 

Objects’ colour

Design colour’s choice is extremely important, even if is quite subjective.

Colours arouse emotions and this particular emotion may differ from person to person.

Studying how colours influence people is a real kind of business.

The simple change of a tone or a saturation is enough to arouse completely different feels.

Moreover even cultural differences should be considered, because what means happiness somewhere, could means sadness in somewhere else.

Our Logo, for instance, RED and BLUE show different meanings between Orient and Occident.

Red:
• Occident: excitement, love, passion
• Orient: wedding dress, joy

Blue:
• Occident (Europe): relaxation, confidence
• Orient: sadness, depression, wedding tradition, prudence

Colour perception

What is really important for any producer is to be able to reproduce the chosen colour without facing the risk of visual errors.

Light, object and observer are three essential components in colour perception.

The variation of one of these three components changes inevitably the colour perception.

In the event that light and observer do not change, the object will define the observer’s colour perception.

The object can influence colour perception because his reflective surfaces (transmittance surfaces) modulate the spectrum of the light source.

Each object has several reflectivity surfaces, these one are modified by the light source obtaining various results.

The same observer, but different colours perceived.

The colour difference meter help us to measure chromatic differences.

 

Colorimeter

Calibration report for the colour difference meter

An optional service for the colour difference meter is the calibration report.

It is a document edited by metrological laboratories that insures that the test has been made with reference to national acknowledged samples.

The technical worthiness of these documents is based on the laboratory’s qualification, on the operator’s expertise and by the metrological procedures employed.

 

Application fields

Colour difference meters are able to operate on plastic, metal, printings and painted surfaces.

They are mainly employed to perform quality checks on incoming and outgoing goods.

How the colour difference meter works?

The colour difference meter operating principle is based on the measurement of chromatic aspects of the light that arrives on the surfaces from any source, directly or indirectly.

Suitable for intermediate stages analysis in producing materials such as:

  1. Clothes
  2. Building
  3. Interior design
  4. Plastics
  5. Paints
  6. Facings
  7. Porcelains

 

 

It is a perfect device to be used for field measurement.

 

 

 

 

It is used to check chromatic differences between samples of the same material in a fast and accurate way.

 

Would you like more information or assistance?

If you are looking for further information on a specific color meter model or want to know more, contact our technical department. You can call us at 0584/392342 – 0584/392453 or, alternatively, book an appointment for a video meeting.