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Transparent sticker

Hot Foil Stamping (Silver Foiling and Gold Foiling) on stickers is a high-quality post-press process that uses thermal transfer printing (hot stamping) to precisely transfer a metal-lustered foil layer onto the sticker surface. This process gives product labels a unique metallic texture, dimension, and premium feel.

Below is the standard manufacturing process table for hot stamped (silver/gold) stickers:

Hot Stamped (Silver/Gold) Sticker Manufacturing Process (Traditional Thermal Transfer)

Phase	Step	Description & Key Considerations
I. Design & Pre-Press Preparation	1. Prepare Design File	Prepare the complete color printing artwork file for the sticker (CMYK mode).
	2. Create the "Foiling Black Plate"	This is the core step. Independently create a vector file (AI file) where all areas designated for hot stamping (gold/silver) are precisely filled with K100% pure black (this black solid area dictates the future location of the metallic foil transfer).
	3. Select Sticker Material	Traditional hot stamping is best suited for porous materials like coated paper and wood-free paper. Using non-porous materials like synthetic paper or transparent stickers can cause clouding or bubbling with large-area stamping due to trapped heat and requires careful assessment.
II. Platemaking & Printing	4. Make Printing Plates	Create traditional printing plates for the color printed areas (if applicable).
	5. Create the "Stamping Die"	Based on the black artwork (K100%), engrave a metal relief plate (the stamping die, typically made of zinc, magnesium, or copper). The artwork must be engraved in mirror image to stamp the correct orientation onto the sticker.
	6. Color Printing	Proceed with color printing on the sticker face stock. Note that stamping areas should not heavily overlap with color inks.
III. Foiling Process	7. Mount and Heat the Die	Mount the engraved stamping die onto the hot stamping machine and preheat it to the specified temperature (approx. $10 0^{\circ} C$ to $15 0^{\circ} C$ ).
	8. Foil Transfer	Place the hot stamping foil (electroplated aluminum foil) between the sticker and the heated die. The die applies high heat and pressure. The metallic layer is released from its carrier film and adheres firmly to the substrate in a fraction of a second.
	9. Waste Foil Removal	The remaining carrier film (waste foil) is removed, leaving the gold/silver design on the sticker.
IV. Post-Press & Finished Product	10. Surface Protection (Lamination)	Decide on the lamination method, which affects durability: • Laminate First, Then Stamp (Common): Stamping is on top of the film. • Stamp First, Then Laminate (Under-Film Stamping): The foil is sealed under the film, significantly increasing scratch resistance, waterproofing, and oil resistance. Recommended for high-oil products like cosmetics or essential oils.
	11. Cutting and Die-Cutting	Perform precise half-cuts (kiss-cuts) or full-cuts according to the design.
	12. Quality Check and Dispatch	Check the registration of the stamping, metallic gloss quality, cutting accuracy, and package for delivery.

⚠️ Critical Design Specifications for Hot Stamping Stickers

Item	Specification Recommendation
Lines & Text	Text size suggested $\geq 8 pt$ ; Line thickness suggested $\geq 0.3 mm$ . Artwork that is too fine or closely spaced is prone to filling in (blurring) or incomplete foil transfer/peeling.
Registration Error	As hot stamping is a separate process from color printing, an inherent registration error of $0.5 mm$ to $1 mm$ between the foil and print is possible and unavoidable.
Oil Resistance	Hot stamping foil is not oil or chemical resistant. If the product is exposed to oils or solvents, under-film stamping ("Laminate After Stamping") is strongly recommended for protection.
Foil Colors	Besides bright gold and silver, options include matte gold, matte silver, rose gold, holographic foil, and color foils (e.g., red, black) for diverse metallic effects.

Update:10/14/2025
Clicked: 2563

This product was added to our catalog on Tuesday 23 September, 2025.