Cardboard

Cardboard

Definition

Cardboard is a stiff board made primarily from wood pulp fiber, often manufactured in corrugated form for strength and durability. In the framing industry, cardboard is most commonly used as a packaging material to protect picture frames during shipment in soft or hybrid packs, rather than as a conservation-grade material for the artwork itself.

Construction & Composition

• Corrugated Cardboard: Features a fluted inner layer sandwiched between two flat liners, offering cushioning and rigidity.
• Chipboard: A non-corrugated, thinner version made from compressed recycled paper pulp, often used as a backing layer in packaging.
• Wood Pulp Base: The primary raw material is mechanically processed pulp from trees, making cardboard widely available and inexpensive.

Uses in Framing

• Packaging: Cardboard sheets and boxes protect frames in transit by absorbing shock and resisting puncture.
• Hybrid Pack Systems: Often combined with bubble wrap, foam sheeting, or corner protectors for additional security.
• Separation Layers: Flat cardboard sheets may be placed between multiple frames in bulk shipments to prevent scratches.

Limitations

• Non-Archival: Cardboard contains lignin and acidic components that can damage artwork if used inside the frame package.
• Moisture Sensitivity: Easily warps or weakens when exposed to humidity or water.
• Short-Term Use: Suitable for shipping and handling but not recommended for permanent storage or conservation.

Best Practices

• Use cardboard exclusively for external packaging or temporary support, not for direct contact with valuable artwork.
• For long-term backing or mounting, substitute with archival options like Mounting Board or Foam Board.
• When shipping, reinforce corners and edges with additional protective materials.
• Recycle or reuse cardboard packaging whenever possible for sustainable practice.

Alternatives

• Coroplast - Lightweight corrugated plastic offering moisture resistance.
• Mounting Board - Archival, acid-free board for mounting artwork.
• Foam Board - Rigid, lightweight alternative for mounting or backing.
• PVC Sheet - Durable plastic board with smooth surfaces for display and signage.

Related Terms

• Coroplast
• Mounting Board
• Foam Board
• Pvc Sheet