White File Best Practices: The Importance of White Ink for Labels

Every great product label starts as an art file. These files play a key role in helping your label printing company take your design and turn it into a stunning label. In addition to your design, art files contain important details to create a specific look and avoid potential printing issues. One of the most important elements of this process is the white file.

Why White Files are Important

A white file is a specific layer included in your art file. This layer instructs the printing press to lay down white ink on a metallic, clear, holographic, or dark substrates to create opacity. This process is important because label printing companies use the CMYK color format for physically printed items like product labels.

White files play a key role in supporting the CMYK color format because it can help you capture the correct color for metallic, clear, and other types of substrates. A full coat of white ink allows you to mask the substrate – it’s like printing on white paper at that point.. You can also do a partial coat of white to allow some portion of the substrate to show through, such as a slight metallic sheen. Either way, the white file allows you to capture the color you want instead of the color or effect of the material over powering your design.

Different Methods for White Files

There are a couple of different ways to use white ink for your labels. These approaches differ largely based on what you want to achieve with your design. These methods are:

  • Flood coats
  • Spot applications

A flood coat is used when you need to cover an entire surface with white ink. Since a flood coat covers the entire surface of a substrate, you don’t need any additional file preparation. In some instances, it is good to note that a white material might be a more economical choice if you are needing to flood coat.

Spot applications are used to apply specific patterns of white ink to substrates. The white file is used to indicate to a printing company’s prepress team exactly where the white ink should be applied for your design. For example, you may want a clear product label to showcase your container (or even the products within that container. A spot application notes exactly where a base coat of white ink should go to support the individual elements of your design.

White File Creation Best Practices

You’ll need to prepare an appropriate layer to call out spot applications of white ink in your art file. Our white file creation guide can give you need a step-by-step breakdown on how to prepare your art file for white ink. In addition, it’s important to remember the following best practices to make sure your white file is set up for success.

Use vector images if possible

While you can create art files for labels with both Adobe Illustrator and Photoshop, Illustrator can lead to a smoother process. Photoshop uses pixel-based raster images, while Illustrator works using layered vector files. These layers allow you to make your desired white file clear, whereas a label prepress team would need to make some design decisions with raster images.

For example, a prepress expert may need to make pixel-by-pixel judgments for where your white file ends in a flat raster image. That judgment call could leave a white fringe around a certain element of your design, which you may or may not want. By using a vector image in Illustrator, you can make your design preferences clear.

Mark white files as a layer above your label art

While the white ink is printed onto the substrate before the CMYK ink, white files should be added above the label art in your art file. This process makes it very clear on label proofs where white ink should be added during the printing process. When white files are placed below the CMYK layer, it can hide key information that’s important for your design.

This process can be tricky, especially if you have certain design elements within other elements. Let’s say you want a label with a matte background, but you have an information box that you want to be metallic. That information box should be in a layer above the label background. The white file for the lettering within that information box should then be in another layer above that information box layer. If the white file were tucked below, it could get lost in translation. As such, keeping white files above their respective art layers can make sure white ink is applied exactly where it’s needed.

A white ink layers setup for a label.

Clear, consistent terminology

It’s important to be as clear and consistent as possible when naming art file layers. In general, it’s good to name your layers as “white ink” or with a description of how you’d like the layer to look.

For example, you may need a white file that still allows some amount of the metallic substrate to show through the ink. In this case, naming the layer “50 percent metallic” will clearly show how much white ink is needed under the CMYK ink. By using clear, consistent layer names, you can reduce the amount of back-and-forth discussions necessary to achieve your ideal label.

Simplify barcodes

While you may be tempted to do a metallic barcode or some other interesting design, it’s best to use a simple color scheme for your barcodes. You want to have enough contrast between the bars and the background to ensure that scanners can read your barcode.

Black bars on a white background is typically the safest route. A solid base of white ink to support your barcode in this scenario is a great way to support the barcode.

A label with a metallic substrate made with white file best practices.

Set Up Your Product Labels for Success

A little preparation can make a massive difference for your product labels. However, certain art file and design issues aren’t always obvious. At Blue Label, our prepress team works with you to eliminate potential problems and identify opportunities to enhance your finished product labels.

Ready to invest in stunning labels for your products? Contact us today about your labeling needs.

How Labels are Made: Digital Printing from Design to Finished Product

Ever wondered what it takes to print your labels? Whether it’s a minimalist design or an ornate construction, each label goes through a specific process to produce an eye-catching finished product. Here’s what it takes to turn a label design into a finished product label.

Step 1: Label Quotes and Prepress

The very first step of the digital printing process involves gathering information and putting together a quote. As a digital label printing company, the first things we’ll need are: the size of your label, the material you want your labels printed on, and some quantities of your total label order. With that information, we’ll send back a quote for the project. If everything looks good, we’ll then need your artwork so we can send a digital proof for final approval before print.

With all the approvals confirmed, your artwork gets sent to our prepress department to review your print ready file. The prepress process essentially acts as a last line of defense before anything goes to the printer. This team reviews various elements of your art file to make sure that your artwork is prepared for printing. This includes making sure that the fonts are outlined, spot colors and Pantones are correctly labeled, images are embedded, and any other key details are addressed before we print your labels.

A prepress expert examinging barcodes on a product label.


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The prepress team will also look for any label elements that may be improved. For example, if your label has a barcode, they may do a test print of your label to see how well the barcode scans. If it doesn’t grade out well, they will double check with you to see if you want to modify the barcode or surrounding areas to improve the scan-grade.

Whether they discover an opportunity for improvement or issues with the art file, the prepress team will alert your account manager and send back your file so that your label is perfectly prepped for the printers. Once that’s done, it’s time for the next phase.

Step 2: Printing

When the art file is good to go, it moves to our state-of-the-art HP Indigo digital printing presses. Unlike traditional printing methods, digital printing doesn’t require the use of plates to transfer images onto labels. Instead, the HP Indigos read the digital files and use electronically charged particles in the inks to apply designs directly onto the label material. By cutting out the need for plates, digital printing not only saves you money on plate costs and setup fees, but also provides quicker turnarounds to save you precious time.

The process during the printing phase is simple: to print. The label material comes in long rolls that are fed through the printer, where the machine will print your design onto your material of choice. Once the rolls are printed, it’s time for them to get any finishing treatments and be cut for use.

Product labels going through a finishing machine.

Step 3: Finishing and Die Cutting

Once the labels are printed, they go through a finishing machine. This machine can apply many different treatments to a label, ranging from aesthetic elements like embossing or hot foil stamping to protective top layers like laminates and UV varnishes.

Another important purpose of the finishing process is to die cut each label and slit down the large roll into manageable, multiple rolls. To minimize waste and printing costs, we’ll lay out the labels to print side by side. After being die cut, the labels roll through a slitting portion of the finishing machine, the rolls are slit by little razors so that there are two or three rolls at the end of the press. This prepares them for the final stage of the label-making process.

Product labels being rewound to exact counts.

Step 4: Winding and Shipping

Now that the rolls are finished and slit to a manageable size, it’s time to rewind each roll. The labels come off the finishing machines with large quantities on each roll, but that can be an issue for certain applicators. That’s why rewind machines re-roll your labels with exact quantities to break them up into more manageable amounts for your business.

After rewinding, the packaging department conducts a final quality check to review and ensure that your labels are good to go. Once everything is clear, your labels are packed up and shipped out so that you can use them for your products.

Simplify the Label-Making Process for Your Business

It takes multiple steps to produce a quality product label, but that doesn’t mean the experience has to be difficult. At Blue Label, we guide you through the process from start to finish. This collaborative approach allows us to understand what you and your labels need. Contact Blue Label today about your next label project.

Barcode Basics: What to Know About Barcodes and UPCs for Product Labels

A barcode and a UPC may not be the most attractive part of your product label, but they play an important role for your business. A good barcode with an appropriate UPC will make it easy for you or a separate vendor to scan your labels and sell your goods. This makes it very important to make sure your barcodes are set for success. Here’s what you should know to make sure your barcodes and UPCs are ready to head out into the market.

What Goes into a Barcode and UPC?

A barcode and a UPC are two different elements that work together to identify a product. The UPC, which stands for universal product code, is a 12-digit number assigned to merchandise, while the barcode is the machine-readable version of that number. Different parts of that 12-digit code play different roles.

  • First six digits – the manufacturer identification number
  • Next five digits – the item number
  • Last digit – the check digit

A product label barcode with an example UPC.


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Manufacturers can apply for UPCs from the Uniform Code Council. After approval, a manufacturer can pay an annual fee to become a part of the UPC system and get its unique manufacturer identification number that will be used for all its barcodes. The item number is specific to each product. The manufacturer is responsible for issuing those numbers and avoiding any duplication of numbers for different SKUs. Finally, the digit check is a single number to confirm the integrity of your barcode number. You can determine the exact number for a product with GS1’s check digit calculator.

Other Types of Barcodes

While EAN/UPC barcodes are the most common and widely-used barcodes, GS1 uses several other types of barcodes for different business requirements:

  1. GS1 Databar: The GS1 DataBar is a family of barcodes designed to provide a compact yet comprehensive solution for encoding data in smaller items that cannot accommodate traditional barcodes. They’re capable of carrying extensive information including product identification, batch numbers, and expiration dates, making them ideal for fresh foods and healthcare products where space is limited but detailed data is essential.
  2. GS1-128 and ITF-14: The GS1-128 barcode is a high-capacity symbol that allows the inclusion of various data elements by utilizing application identifiers, making them ideal for complex supply chain needs. On the other hand, the ITF-14 barcode is designed specifically to encode a Global Trade Item Number (GTIN) on corrugated materials, making it important in tracking trade items in bulk through distribution channels.
  3. Two-dimensional (2D) barcodes: Think of two-dimensional (2D) barcodes as the evolved form of the typical one-dimensional barcodes you see on product packaging. You’re likely familiar with the most common 2D barcode, the QR Code. These compact squares are cleverly designed to hold a wealth of information by encoding data both horizontally and vertically. They offer a great way to store more in less space.

Different types of product barcodes

Should You Use QR Codes for Product Labeling?

While a QR code might not fit the design (or even size) of every label, a study published in Sustainability evaluated the use of QR codes (in this case on food labels) and published some interesting findings:

  • Nearly 39% of respondents wanted to see QR Codes used more broadly in the future
  • 67% of the respondents agreed that these codes make life easier

The study found that, “QR Codes included in product packaging, on labels, and in commercial spaces (shelves, showcases, posters, etc.), are considered particularly effective in providing timely product and brand information given their capacity to reach consumers when and where they are ready to purchase with relevant, targeted, and interactive information.”

How to Make Sure Your Label’s Barcode and UPC Work

Barcodes are graded on a scale from A to F. As you may expect, the higher your grade, the better your barcode and UPC will be for business. Here are some key considerations to help improve your barcode and UPC for your product labels.

Respect the quiet zone

Every barcode has what’s called a “quiet zone.” This space is the area around the barcode that should be clear of any texts, graphics, or other printed elements. If you don’t leave a barcode a proper quiet zone, a scanner can accidentally read some other element in the surrounding artwork and cause an error.

To prevent any issues, it’s important to give each barcode the proper amount of space. In general, the quiet zone should be the larger of the following two measurements.

  • 10 times the width of the most narrow bar in the barcode
  • An eighth of an inch

An example barcode with the approapriate amount of quiet space.

Use the right colors for your barcode

While utilizing various colors can help lead to an eye-catching label, barcodes should follow a very simple color scheme.

  • Bars: Use a single color, ideally black or a dark color, and avoid warm colors like red or brown (they won’t work well with red laser scanners)
  • Background: Typically the background of the barcode is not printed, meaning the background takes on the color of the label or packaging; if necessary to print the background, use a light color like white for the background and quiet zone

Barcode colors for products

Pay attention to barcode size

Just like labels come in custom sizes, so do barcodes. It’s important to make sure that your barcode isn’t too big or too small for both your label and scanners. In general, bigger barcodes and UPCs are easier to scan, but your options may depend on your design and total label space.

A typical barcode measures 1.469 inches wide by 1.02 inches high, but you can adjust the size as necessary as long as you stay between the following minimum and maximum recommended barcode sizes.

  • Minimum – 1.175” wide by .816” high
  • Maximum – 2.938” wide by 2.04” high

A visualization of the minimum and maximum barcode sizes.

When considering sizing, create your barcode to fit your label size. Be sure to avoid adjusting it by making it bigger or smaller—this could cause issues for its scanning ability. If you need a different size, start fresh and design the barcode in that new dimension.

Ensure proper barcode placement

It’s important to consider where you place a barcode on your label. For products getting scanned at checkout, aim to place the barcode in the lower right corner of the backside. Be sure to keep it away from edges and make sure there’s enough white space around it—this helps the barcode scan easily.

We know that packaging and containers come in a wide variety of shapes, but make sure that the printing surface for the barcode is relatively flat—any bumps or irregularities could cause issues with how well scanners can read your barcode.

GS1 has published Guidelines for Bar Code Symbol Placement for reference.

Send your barcodes to the printer in the right format

Once you have your label design with an appropriate barcode, it’s time to send It along to a printing company. However, there are specific rules as to how you should send that information. In addition to sending the appropriate art files for your label, you’ll also need to deliver the barcode(s) in one of the following forms.

  • An image file of the barcode you’ve received from the provider
  • An Excel document with a list of UPC numbers
  • A PDF or EPS of the barcodes

A label printing expert testing a barcode label.

It’s important to work with a label printer with premium printing capabilities—if a barcode fails to scan, it could lead to lost sales and frustration on the part of both customers and vendors. Even worse, it could lead to charge-backs from retailers if they can’t scan your products.

A label expert will know how to choose the right materials and printing techniques to avoid smudges, defects, abrasions, and low-resolution printing.

Thinking of using printable label sheets on an inkjet printer or laser printer at home? Be careful—home printers may not be able to provide the resolution needed for barcode labels. Plus, paper labels compatible with home printers typically aren’t suitable for most product environments (i.e. durable label materials, tear-resistant, water-resistant labels, etc.).

How to Get a Barcode

We’ve talked about different types of barcodes as well as design considerations, but you may be wondering how you actually obtain a barcode in the first place? The best place to start is the GS1 website.

In the U.S., you can either start with an individual GTIN or register multiple barcodes at a time. Luckily, GS1 provides a helpful barcode estimator to identify exactly how many (and what kind of) barcodes you’ll need.

The process of obtaining a barcode is pretty simple:

  1. Choose either a GS1 US GTIN or GS1 Company Prefix
  1. Input your contact information
  2. Pay (price will vary depending on quantity and type of barcode)

Make Sure Your Labels are Perfect for Your Products

Preparing a barcode and UPC for a product label is one of many important parts in the labeling process. Once you take all the steps to make sure your design is ready for production, it’s time to find a good printing company to give you the quality labels you deserve.

At Blue Label, we take all the steps necessary to not only print stunning labels, but also to check and make sure that everything is right before we print your full order. To help ensure that your barcodes are ready for the market, we’ll print out example labels and test them with scanners to make sure they work. After review, we’ll grade your barcodes and double check that your UPC matches the bars. If we notice any problems, we’ll notify you so that you can amend the issue before we print your run.

Ready to invest in quality product labels for your business? We’re happy to help. Contact us today to talk to us about your next labeling project.

Advantages and Uses of Variable Printing for Labels

You don’t need to personally meet your customers to give them a personalized product experience. Thanks to digital printing technology, your product label can do that for you.

Variable data printing allows businesses to customize and personalize their labels through digital printing. Back in 2013, Coca-Cola started a personalized brand campaign in which it printed “nearly 800 million personalized bottle labels for the campaign, using more than 10,000 names, in more than 10 languages and five alphabets.” In 2016, Diet Coke launched the “It’s Mine” campaign, in which every single 12-ounce glass bottle label featured a different design.

While Coca-Cola had a lot of success with their campaigns, you don’t need to be a massive company to leverage the benefits of variable data printing. All it takes are a few ideas and a digital printing company with the technology to make it happen.

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