Overview
Double-layer cardboard consists of two bonded paperboard layers, offering improved rigidity and protection compared to single-ply alternatives. It balances cost and performance, making it a staple in industrial and creative applications. The material is manufactured by laminating or pasting two sheets of paperboard, often with varying compositions (e.g., kraft outer layer for strength, recycled inner layer for cost savings). Standard thickness ranges from 1-3 mm, with grammage typically between 200-500 GSM.
Product Features
Key advantages include superior load-bearing capacity for lightweight packaging and ease of die-cutting or folding. The dual-layer structure resists bending and compression better than single-layer boards. Eco-friendliness is another hallmark, as most double-layer cardboard is recyclable and biodegradable. Some variants feature water-resistant coatings or clay-coated surfaces for high-quality printing.
Main Uses
Primary applications include product packaging (e.g., electronics, cosmetics), retail displays, and bookbinding. Its flat surface accommodates high-resolution printing for branded packaging. In B2B contexts, it's favored for cost-effective protective inserts, shipping dividers, and point-of-purchase stands. Craft industries utilize it for model-making and structural prototypes due to its workability.
Culture and Development
The innovation responded to early 20th-century demands for sturdier packaging during industrialization. Post-WWII advancements in adhesive technologies enabled mass production. Today, sustainability trends drive innovations like starch-based adhesives and FSC-certified fibers. Digital printing compatibility has expanded its use in short-run customized packaging.
B2B Procurement Guide
Bulk buyers should verify certifications like ISO 9001 for consistent quality. MOQs typically start at 1,000 sheets, with discounts for full pallet orders (approx. 2,000-5,000 sheets). Key specifications to confirm: bursting strength (kPa), edge crush test (ECT) values, and humidity tolerance. For international shipments, inquire about anti-fungal treatments to prevent moisture damage during transit.
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