Packaging Marterials of Inner tray

Packaging Materials & Applications | Custom Paper & Inner Tray Solutions for Brands

In the world of custom packaging, choosing the right materials is essential to ensure product protection, aesthetic appeal, and environmental responsibility. This guide introduces common packaging materials including various types of paper, cardboard, and inner tray (inset) materials. Each section covers material properties, features, and ideal applications, helping brands make informed packaging decisions.


1. Paper Materials for Packaging

1.1 Coated Paperboard: C1S and C2S

  • C1S (Coated One Side):
    This paperboard features a coated, glossy or matte surface on one side, and an uncoated rough back.
    • Properties: Smooth printable surface, good stiffness, moderate durability.
    • Applications: Typically used for folding cartons, cosmetic boxes, and retail packaging where printing quality matters on the outside only.
    • Advantages: Cost-effective, vibrant print, suitable for high-quality graphics.
  • C2S (Coated Two Sides):
    Both sides are coated, offering a smooth, printable surface on the inside and outside.
    • Properties: Higher print quality on both sides, better moisture resistance.
    • Applications: Ideal for food packaging, pharmaceutical boxes, and premium retail packaging requiring print inside and out.

1.2 SBS (Solid Bleached Sulfate) Paperboard

  • Description: Made from bleached virgin wood pulp, SBS is a high-quality, pure white paperboard.
  • Properties: Excellent stiffness, smooth surface, excellent printability, and high cleanliness (no odor or contamination).
  • Applications: Widely used in luxury packaging such as cosmetics, pharmaceuticals, food, and confectionery boxes.
  • Environmental Note: SBS is recyclable but made from virgin fibers, so it’s less eco-friendly than recycled paperboards.

1.3 Textured Paper

  • Description: Paper with embossed or textured surface patterns such as linen, canvas, or leather effect.
  • Properties: Adds tactile appeal, enhances visual luxury, masks fingerprints and scratches.
  • Applications: Popular in luxury gift boxes, perfume packaging, and premium paper bags.
  • Benefits: Elevates brand image by providing a distinctive, high-end feel.

1.4 Recycled Paperboard

  • Types:
    • 100% Recycled Paperboard: Made entirely from post-consumer waste paper.
    • Mixed Content Recycled Paperboard: Contains a percentage of recycled fibers blended with virgin fibers for improved strength.
  • Properties: Variable whiteness and smoothness depending on the recycled content, generally less bright than virgin paperboard but increasingly improved by technology.
  • Applications: Sustainable packaging solutions for consumer goods, food packaging, and shipping cartons.
  • Environmental Benefits: Reduces waste and carbon footprint, aligns with eco-conscious brand values.

1.5 100% Recycled Grayboard

  • Description: Heavy-duty recycled fiberboard commonly used as the structural base for rigid boxes.
  • Properties: Strong, durable, excellent stiffness, typically gray color, often laminated or covered with decorative paper or fabric.
  • Applications: Rigid gift boxes, book covers, luxury packaging bases.
  • Sustainability: Using 100% recycled grayboard supports circular economy and sustainability initiatives.

More about paper packaging materials: Paper Packaging Materials


2. Inner Tray (Inset) Materials

Inner trays or inserts secure and protect the product inside the packaging. The choice depends on product fragility, presentation needs, and environmental considerations.

Packaging Materials of Inner tray

2.1 Paper Inserts

  • Material: Made from die-cut paperboard or molded pulp.
  • Properties: Lightweight, recyclable, customizable shapes, and often made from recycled materials.
  • Applications: Suitable for cosmetics, electronics, and small gift items.
  • Advantages: Environmentally friendly alternative to plastics, biodegradable.

2.2 PET (Polyethylene Terephthalate) Inserts

  • Properties: Clear or colored plastic with good rigidity, glossy finish, and moisture resistance.
  • Applications: Used for premium cosmetics, electronics, and food packaging where product visibility is desired.
  • Considerations: PET is recyclable but requires proper disposal; not biodegradable.

2.3 EVA (Ethylene-Vinyl Acetate) Foam Inserts

  • Properties: Soft, flexible foam with excellent cushioning, chemical resistance, and low odor.
  • Applications: Ideal for fragile items such as electronics, glass bottles, and delicate cosmetics.
  • Benefits: Protects products from shocks, scratches, and vibration.

2.4 Sponge Inserts

  • Material: Usually polyurethane foam or similar materials.
  • Properties: Soft cushioning, flexible, cuttable to custom shapes.
  • Applications: Jewelry boxes, gift packaging, and sensitive instruments.
  • Advantages: High protective performance, customizable thickness and density.

2.5 EPE (Expanded Polyethylene) Foam / Pearl Cotton Inserts

  • Properties: Lightweight, resilient foam with good shock absorption and moisture resistance.
  • Applications: Widely used in industrial packaging, electronics, and fragile glass or ceramics.
  • Sustainability: Non-biodegradable but recyclable depending on local facilities.

3. Choosing the Right Packaging Material

When selecting packaging materials, consider these factors:

  • Product protection requirements (fragility, moisture sensitivity)
  • Brand positioning (luxury, eco-friendly, cost-effective)
  • Environmental impact (recyclability, biodegradability)
  • Printing and finishing needs (quality, texture)
  • Budget and volume

A well-designed packaging solution combines the right choice of outer paper materials and inner trays to protect products, convey brand value, and meet consumer expectations. Understanding the properties and applications of each material helps brands create packaging that is both functional and visually appealing, while aligning with sustainability goals.


For more detailed information and customized solutions on various packaging materials, please visit our products
If you need professional packaging consultation or custom services, feel free to Contact Us. Our team is ready to provide comprehensive support to help your brand stand out.

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