Kraft Paper is generally stronger than many ordinary printing and wrapping papers. However, its actual strength depends on fiber composition, basis weight, thickness, moisture level, surface treatment, and the production process.

Lightweight kraft paper is commonly used for gift wrapping, flower packaging, and carton lining. Heavier grades can be used for industrial wrapping, shopping bags, product protection, Paper Strapping, and transport packaging.

How Is Kraft Paper Strength Measured?

Paper strength cannot be judged by thickness alone. Several properties need to be considered:

• Tensile strength measures resistance to pulling forces.

• Tear resistance shows how easily an existing cut continues to tear.

• Burst strength measures resistance to pressure applied to the sheet.

• Folding strength reflects performance during repeated bending.

• Puncture resistance matters when wrapping products with sharp corners.

• Wet strength shows how well the paper performs after contact with moisture.

A paper grade may have good tensile strength but still tear easily from a damaged edge. Buyers should therefore test the paper according to its intended packaging application.

Why Is Kraft Paper Strong?

Kraft paper is normally produced from cellulose fibers that retain relatively good length and flexibility. During paper formation, these fibers create a bonded network that gives the sheet its toughness.

Its final performance is influenced by:

• Virgin or recycled pulp content

• Long-fiber and short-fiber ratio

• Fiber refining level

• Sheet density

• Basis weight

• Machine direction

• Moisture content

• Coating or lamination

• Storage conditions

Higher basis weight may improve strength, but it does not automatically guarantee better performance. Uneven fiber formation or poor storage conditions can still weaken the paper.

Where Is Strong Kraft Paper Used?

Different kraft paper grades are selected for different tasks, including:

• Shopping and takeaway bags

• Carton lining

• Product interleaving

• Furniture surface protection

• Garment packaging

• Industrial roll wrapping

• Medical wrapping

• Butcher paper

• Paper strapping

• Protective void filling

For products exposed to oil, moisture, abrasion, or sharp edges, buyers may need coated or laminated kraft paper rather than a standard untreated grade.

How to Test Kraft Paper Before Ordering

Before approving a bulk order, test the paper under real operating conditions:

1. Wrap the actual product.

2. Fold the paper around corners.

3. Apply the expected pulling force.

4. Test both paper directions.

5. Check its performance in humid conditions.

6. Test whether printing or coating changes flexibility.

7. Compare samples taken from different roll positions.

Application testing is more reliable than judging paper only by color or hand feel.

Our Kraft Paper Supply Capability

Our factory was established in Jiangmen in 2008. We integrate paper production, processing, warehousing, distribution, technical support, and after-sales service.

Our paper range includes:

• Acid-free kraft paper

• White kraft wrapping paper

• Yellow kraft paper

• White kraft butcher paper

• Medical wrapping paper

• Kraft paper strapping

• Laminated paper

• General packaging paper

Selected products can be customized according to width, thickness, roll size, color, and packaging requirements. OEM and ODM cooperation is also available for different converting and packaging projects.

Final Strength Assessment

Kraft paper can offer excellent strength, but buyers should define whether they need tensile strength, tear resistance, folding performance, puncture resistance, or moisture protection.

A lightweight sheet may be ideal for flexible wrapping, while heavier or laminated kraft paper may be required for industrial packaging.

Request a Kraft Paper Quotation

Send us your required paper width, thickness, color, roll size, application, packaging method, and estimated quantity. Our team will recommend a suitable kraft paper specification and prepare a quotation.