Industrial stickers, often referred to as label stickers or industrial-grade labels, are primarily used in factories for product identification, barcodes, warning signs, asset management, and product instructions. Consequently, they require high resistance to durability, water, oil, and heat.
Below is an introduction to the common types and manufacturing processes of frequently used factory stickers:
I. Common Types and Materials of Factory Stickers
The choice of factory sticker material largely depends on the application environment (indoor, outdoor, high temperature, low temperature, oil exposure) and intended use.
Sticker Type
Common Material
Characteristics and Common Uses
Durable Stickers
Tetoron (PET)
Characteristics: Waterproof, tear-resistant, abrasion-resistant, heat-resistant, strong adhesion, oil-resistant (transparent PET is not oil-resistant). Uses: Electronic product labels, asset tags, machinery equipment labels, circuit board stickers.
Waterproof Stickers
Synthetic Paper (PP/PVC)
Characteristics: Plastic-like properties, waterproof, tear-resistant, highly durable, relatively affordable. Uses: Refrigerated/frozen food labels, beverage labels, cosmetic bottle labels.
Warning/Instruction Stickers
Vinyl
Characteristics: Industrial-grade material, high flexibility, chemical-resistant, UV-resistant (suitable for outdoors), excellent weather resistance. Uses: Pipe markers, outdoor warning signs, fleet decals.
General Labels
Coated Paper
Characteristics: Inexpensive, smooth surface, good color reproduction, but not water or oil-resistant. Uses: Product barcodes, logistics labels, internal warehouse labels (non-harsh environment).
Security Stickers
Destructible Vinyl, VOID Stickers
Characteristics: Difficult to remove intact, used for tamper-proofing and warranty seals. Uses: Product warranty labels, sealing stickers.
II. Sticker Manufacturing Process
The sticker manufacturing process typically covers several steps from design to final packaging. For high-volume production, high-speed letterpress printing presses or digital printing presses are often used.
Step
Description
Key Considerations
1. Requirement Confirmation and Design
Determine the sticker’s size, shape, quantity, content, and usage environment, and select the most suitable material and adhesive type (e.g., permanent, removable).
Artwork Preparation: Files must be set to CMYK color mode, text outlined, and include bleed (approx. 3mm) and safety margins to prevent cutting errors.
2. Plate Making (Traditional Printing)
If using traditional methods like letterpress or offset printing, printing plates (e.g., photopolymer plates, PS plates) must be made based on the design artwork.
Multi-color printing requires separate plates for each color to ensure precise registration.
3. Printing
Use a printing press (e.g., letterpress, screen, or digital machine) to print the design and text onto the sticker face stock.
The printer must control ink coverage and color saturation, especially whether transparent stickers require an underlying layer of white ink as a base.
4. Post-Processing
To enhance durability, protect the ink, or improve texture, the following processes are performed:
Many industrial stickers are laminated to achieve water, scratch, and oil resistance.
Lamination: Glossy film (adds shine) or matte film (provides a matte texture, scratch-resistant).
Varnishing/Oiling: Adds a layer of ink protection.
Hot Stamping (Gold/Silver): Adds metallic luster to specific areas, used for brand marking.
5. Die-Cutting and Punching
The stickers are cut according to their shape. Cutting methods include:
Roll form is best suited for factory automatic labeling machines, significantly boosting production efficiency.
Kiss-Cutting (Half-Cut): Cuts only the sticker face stock, leaving the release liner (backing paper) intact, making it easy to peel.
Through-Cutting (Single-Cut): The sticker and backing paper are fully cut, suitable for single sheet distribution.
Roll Form: Continuous stickers, half-cut and wound onto a core.
6. Quality Inspection and Delivery
Check the print color, cutting precision, adhesion, etc., against the order specifications, and package and deliver according to customer requirements.
For roll stickers, the core inner diameter and label dispensing direction must be confirmed before shipping to match the customer's labeling machine specifications.