Why Is Kraft Paper Packaging So Popular?

In simple terms, kraft paper is a type of paper made from softwood pulp. It boasts extremely high tear resistance, burst strength, and dynamic strength. It is mostly produced in roll form, though flat sheets are also available.
Kraft paper is known for its rugged durability, typically featuring a tan to dark brown color. Semi-bleached and fully bleached kraft paper can also appear cream-colored or white. Thanks to its high tear resistance and dynamic strength, it is flexible, sturdy, and resistant to pulling and abrasion. Its applications are incredibly versatile, commonly used in paper bags, school notebooks, envelopes, and more.

The Advantages of Kraft Paper

As packaging material, kraft paper offers key benefits like environmental friendliness, recyclability, and cost efficiency. With the global market's growing demand for eco-friendly packaging, kraft paper has become a top choice due to its strength and sustainability. Additionally, one unique advantage is that kraft paper packaging does not require additional customs inspections, simplifying international shipping processes.
Of course, as a packaging material, high compressive strength is essential—many products undergo logistics transportation, where packaging is prone to issues like crushing or squeezing. Kraft paper excels in fold resistance and toughness, making it ideal for withstand transport stresses.

Printing Characteristics of Kraft Paper

Kraft paper typically comes in two basic colors: brown and white.
White kraft paper, bleached through chemical processes, is often used for printing.
Brown kraft paper is more commonly used for packaging.
White kraft paper packaging offers advantages like health safety, environmental sustainability, and high cost-effectiveness. It is made entirely from wood pulp sourced from managed tree farms (not natural forests) and is fully recyclable.

Kraft Paper Printing Techniques

If a single color contains both large solid areas and halftone dots (or fine lines), it is best to separate the solid areas and dots/lines into two separate printing plates. Here's why: If you prioritize printing the solid areas densely, the dots or lines may smudge; conversely, if you focus on crisp dots/lines, the solid areas may show gaps or uneven coverage. For projects with strict print quality standards, balancing both elements is nearly impossible without splitting them into separate plates.
Due to its unique texture and feel, kraft paper is a favorite among designers. When printing on kraft paper, pay attention to these key points:
1. Printer Selection:
Kraft paper's rough surface requires compatible equipment. Letterpress or flexographic printers are recommended. During printing, adjust the pressure between the impression cylinder and pressure roller to ensure crisp results.
2. Color and Design Tips:
The natural texture of kraft paper can affect print clarity. Avoid overly complex patterns or tiny details; instead, design for the paper's rustic aesthetic.
3. Common Finishes:
Popular effects on kraft paper include foil stamping (gold/silver), embossing, and debossing. Achieving these requires precise control of temperature, pressure, and ink compatibility.