Packaging 101: Guide to Corrugated Packaging

Corrugated packaging is the backbone of modern shipping, storage, and product protection. Whether you are sending out subscription boxes, organizing inventory, or creating retail packaging, understanding how corrugated material works helps you choose the right box for the job.

This guide breaks down the basics in a simple, practical way so you can select packaging that is reliable, cost-efficient, and designed for your products.

Corrugated vs. Cardboard

Many people use “corrugated” and “cardboard” interchangeably, but they are not the same. Both are widely used in packaging, yet they differ in composition, durability, and the types of products they can safely hold.

Cardboard

Cardboard, more accurately called paperboard, is a thick and smooth paper material often used for retail displays and lightweight product packaging. Examples include cereal boxes, cosmetic cartons, and small folding cartons. It stands well on a shelf but is not suitable for heavier items or for shipping.

Corrugated Material

Corrugated material is designed for strength, cushioning, and durability. It is the go-to choice for shipping boxes, mailers, and protective packaging. Corrugated material has a multi-layer structure that gives it its recognizable rigidity and crush resistance.

A typical corrugated board has three layers:

• Top liner. A smooth, strong sheet of heavy-duty paper.
• Fluting. A wavy medium that creates the air pockets responsible for strength and shock absorption.
• Bottom liner. Another smooth sheet that completes the structure.

The flutes act like miniature shock absorbers. They help corrugated material support weight, withstand stacking pressure, and protect items against drops, dents, and vibration during transit.

Takeaway: Cardboard is best for lightweight retail packaging. Corrugated is best for anything that needs strength, cushioning, or shipping durability.

Types of Corrugated Material

Corrugated boards are available in different configurations. Each type is designed for different levels of strength, flexibility, and protective performance.

Board Constructions:

• Single Face
  One liner attached to one sheet of fluting. Used for wrapping or padding products during shipping.
• Single Wall
  One layer of fluting sandwiched between two liners. This is the most common type and is used for many standard shipping boxes and mailers.
• Double Wall
  Two layers of fluting between three liners. Ideal for heavy products, stacking, and high impact protection.
• Triple Wall
  Three layers of fluting between four liners. Extremely strong and often used for industrial, export, or bulk packaging.

Flute Types and Applications

Flutes vary in height and frequency. These differences affect compression strength, print surface smoothness, and cushioning.

At Packola, most custom boxes use B Flute or E Flute. The ideal flute type is assigned automatically based on the box style and size to ensure the best balance of strength, print quality, and performance. If you have a specialized requirement, our team can assist you.

Common Corrugated Box Styles

Different box styles serve different purposes. Here are some of the most widely used formats made from corrugated boards.

• Roll End Tuck Front (RETF)
  Also known as a Mailer Box, it features dust flaps and a tuck front that creates a premium unboxing experience. A favorite for e-commerce sellers and subscription brands.
• Regular Slotted Container (RSC)
  The standard Shipping Box. All flaps are equal in length and meet at the center for easy sealing. Ideal for storage, bulk packing, or outbound shipments.
• One Piece Folder (OPF)
  Perfect for books, documents, prints, and flat items. The board wraps around the product and can include locking tabs or tuck features to secure the contents.
• Corrugated Tuck Top Box
  A Product Box style used when items are heavier or more fragile than what paperboard can safely hold. Offers a retail-ready look with added protection.

Order Custom Corrugated Boxes at Packola

Every business has unique packaging needs. Packola offers a full range of custom corrugated boxes designed to protect your products, improve customer experience, and strengthen your brand identity.

Whether you need durable Shipping Boxes, premium Mailers, or sturdy Product Boxes for your packaging, we can help you build the right solution for your product and workflow.

Create your custom box online or contact our packaging experts for guidance. Call 1 855 PACKOLA or email info@packola.com.