For coin and gold bar packaging, artwork that looks right on screen still needs to be checked in print. Logos, solid colors, photographs, and smooth gradients place different demands on reproduction, while the card layout needs to keep the product clearly visible.
The right blister card printing option depends on your card structure, artwork, brand color requirements, order quantity, and budget. Reviewing a printed sample helps you assess color, detail, and layout before approving bulk production.
At RRainbow Collection, we offer screen printing and full-color CMYK printing directly on PET blister cards. This guide compares our two options and explains what affects print appearance and cost. It also outlines what to prepare for artwork review, sampling, and a quotation, helping you choose a suitable printing option for your project.
What Printing Options Are Available for Blister Cards?
At RRainbow Collection, our PET blister cards for coins and gold bars are available with two custom printing options:
- Screen-printed blister cards: Suitable for logos, lettering, and solid-color graphics.
- Full-color CMYK blister cards: Suitable for photographic images, multicolor illustrations, shadows, and smooth gradients.
With either option, we can print designs directly on the PET card panels. Front and back layouts can include customer-supplied logos, themed artwork, product details such as weight and metal purity, and QR codes.
The formed product cavity is normally left clear and unprinted so the coin or gold bar remains visible. Graphics are printed on the surrounding flat areas of the PET card. Printable areas and sealing positions should be confirmed during artwork review.
We also offer high-clarity, unprinted PET blister cards for projects that require a plain, transparent presentation.
For an overview of card construction, materials, and sealing options, see our guide to blister packaging for coins and gold bars.
When Should You Choose Screen-Printed Blister Cards?
Screen printing is a stencil-based printing technique that transfers ink through a mesh screen onto the flat areas of our PET blister cards.
Consider this option when your artwork uses a limited number of solid colors and emphasizes a prominent logo, clear lettering, borders, or repeated brand patterns. These elements can create a bold branded layout around the transparent product cavity.
Before approving production, review a printed sample on the intended PET card for:
- Color and opacity: Compare the colors with the agreed reference (e.g., a Pantone reference or physical color sample), and check the opacity of solid areas.
- Fine details: Check that thin lines remain distinct and small text is legible at the final printed size.
- Print alignment: Check that different colors align correctly and that graphics follow the approved layout around the cavity.
- Surface finish: Confirm the ink’s appearance and any agreed finishing requirements.
Confirm pricing for your actual color count, printed sides, order quantity, and finish to assess whether this option fits your budget.
When Should You Choose Full-Color CMYK Blister Cards?
CMYK stands for cyan, magenta, yellow, and black. These four process colors combine to reproduce full-color artwork, including photographic images, soft shadows, and smooth gradients.
At RRainbow Collection, CMYK designs are printed directly on the flat areas of our PET blister cards, while the product cavity remains clear for viewing.
Consider full-color CMYK blister cards when your artwork includes:
- Photographic images or shaded illustrations.
- Smooth transitions between colors, including gradient backgrounds.
- Multicolor scenes or decorative patterns with tonal detail.
For commemorative coin releases and gold or silver bar gift collections, this option supports designs for Christmas, birthdays, weddings, anniversaries, and other special occasions. The artwork can communicate the collection’s theme and your brand’s story.
Before approving production, review a printed PET sample at the final card size. Check photographic detail, gradient smoothness, and detail in dark areas. Important brand colors should also be checked against the agreed color reference.
How Do the Two Printing Options Compare?
The table below compares our solid-color screen-printed and full-color CMYK options for PET blister cards. Use it to narrow your choice before reviewing the artwork, sample, and quotation.
| Criteria | Screen-Printed Blister Cards | Full-Color CMYK Blister Cards |
| Artwork suitability | Logos, lettering, solid-color blocks, borders and repeated brand patterns. | Photographs, shaded illustrations, smooth gradients and multicolor scenes. |
| Brand colors | Individual spot-color inks can target agreed brand shades. Confirm the match on PET. | Check whether important brand shades can be reproduced within the CMYK color gamut. |
| Detail checks | Review line edges, small text, solid coverage and alignment between colors. | Review photographic detail, gradients, shadows, small text and thin lines. |
| Printing setup | Each spot color generally requires its own screen preparation and alignment. | Four process colors reproduce many artwork colors, but job setup still applies. |
| Order quantity and cost | Color count, screen preparation, printed sides and order quantity affect pricing. | Press setup, artwork versions, printed sides and order quantity affect pricing. |
If both options suit your artwork, send us your card specifications and order quantity so we can compare the printing options and quotation details for your project.
Understanding Color Accuracy in Printing
Color accuracy describes how closely the printed result matches the agreed color reference. Both options should be assessed on the intended PET material and finish.
Spot-color screen printing can be useful when a particular brand shade is a priority.
CMYK supports multicolor imagery and tonal transitions, but some Pantone shades fall outside its reproducible range.
Provide references for key brand colors and approve an acceptable color match on a printed PET sample.
Check gradient smoothness, shadow detail, and overall appearance alongside brand colors. Keep the approved sample as a reference for repeat orders.
Final Selection Recommendations
- Choose screen-printed cards when your design centers on logos, lettering, and a limited palette of solid colors.
- Choose full-color CMYK cards when photographs, gradients, shaded illustrations, or multicolor themed artwork are central to the design.
- For designs that combine a logo with decorative imagery, share the complete artwork and identify any critical brand colors so we can review suitable printing options.
Base the final choice on the approved appearance and the total quoted cost for your required quantity.
What Should You Prepare for Custom Printing?
Before requesting a quotation or sample for custom PET blister card printing, prepare the following information:
1.Product and Card Dimensions
Provide the coin’s diameter and thickness, or the bar’s length, width, and thickness. Include the capsule’s outer dimensions if applicable. Share your preferred overall card size, PET sheet thickness, and any structural requirements, such as a hanging hole, if known.
2.Order Quantity
Specify the quantity required for each artwork version and card size. List any sample quantities separately from the planned bulk order.
3.Front and Back Artwork
Provide your front and back artwork as a PDF or original design file for review, including the final logos, images, and text. Standalone JPG or PNG previews are not accepted as complete production artwork. File suitability and any required adjustments are confirmed during artwork review.
4.Color and Finish References
Identify any critical brand colors and provide Pantone references or physical color samples where available. Include your preferred print appearance and finish so these can be reviewed alongside the artwork.
5.Clear Viewing Area and Layout
Indicate the preferred position of the product cavity and the placement of logos, artwork, and text. Confirm the clear viewing area, printable areas, and sealing positions before finalizing the layout.
6.Loading and Sealing Requirements
At RRainbow Collection, we normally supply empty PET blister cards. You or your packing partner insert the coin or bar and complete the final seal. Our adhesive designs use 3M double-sided adhesive tape for manual sealing.
If your project requires heat sealing or radio-frequency (RF) sealing, let us know so we can review material compatibility, package construction, and equipment requirements. Please also specify any tamper-evident requirements before ordering.
7.Sample Approval and Delivery Schedule
Specify your sample requirements and target delivery date. A digital proof helps you check content and layout, while a printed PET sample lets you assess color, detail, and finish. Where needed, also review the card’s fit and closure before approving bulk production.
If some specifications are still undecided, share the details you have so we can review the remaining requirements with you and prepare a project-specific quotation.
Conclusion
The best printing option for your PET blister cards depends on your artwork, brand requirements, target market, order quantity, and budget. Screen printing suits logos, lettering, and a limited palette of solid colors, while full-color CMYK suits photographs, smooth gradients, and multicolor themed artwork. Review a printed PET sample to confirm the appearance before approving bulk production.
At RRainbow Collection, we print from customer-supplied artwork. Our artwork support is limited to production-related suggestions and minor adjustments.
Send your coin or gold bar dimensions, preferred card size, order quantity, and front and back artwork to info@rrainbow-collection.com, or contact us via WhatsApp at +852 9466 3444. We can review a suitable printing configuration, discuss sampling options, provide a project-specific quotation, and manufacture custom blister cards based on your approved artwork and specifications.
Frequently Asked Questions
1. Can I start with a small trial order or custom samples?
Our MOQ for bulk orders is 1,000 pieces. If you need samples before placing a bulk order, share your required sample quantity and packaging specifications. We can then confirm sample availability, charges, and lead times for your project.
2. Can an existing mold be used for my coin or gold bar?
We can check our existing molds against your product’s dimensions and fit requirements. Products with the same weight may have different dimensions, so weight alone is not enough to confirm compatibility. If no suitable mold is available, custom tooling may be required.
3. Does the artwork need adjusting when the card or cavity size changes?
It may. Changes to the outer card size, cavity dimensions, or cavity position can affect the available printing area and the placement of logos, text, and images. Review the artwork against the updated card layout before production, even when the overall design remains the same.
4. Can I order several artwork designs for the same blister card?
Provide the quantity required for each design, such as Christmas, birthday, or anniversary artwork. We can review whether the designs can use the same card structure and cavity. Printing setup, minimum quantities, and pricing should be confirmed for each artwork version.
5. How can serial numbers or QR codes work with the printed design?
Reserve a clearly defined area for these elements in the layout. Specify whether the information stays the same on every card or changes for each unit. The application method, data requirements, and any additional charges should be agreed before production. QR-code printing and an online verification service are separate requirements.
6. Can I change the design when placing a repeat order?
Send the previous order reference and clearly identify the proposed changes. Artwork revisions can affect printing setup, pricing, and sample requirements. If the product dimensions and packaging structure remain unchanged, the existing mold may still be suitable; this should be checked before confirming the repeat order.
7. Will the finished cards fit my existing bullion storage boxes?
Provide the storage box’s internal dimensions and any limits on card thickness. Compatibility depends on the card’s outer dimensions and total assembled thickness, including the formed cavity and adhesive. Check a sample after loading and sealing before approving a bulk order.
