Natural Kraft Board

Ultra-clean appearance and sturdy build for sharp, professional packaging.

Best Used With

Bleached White Board

Bleached White Board is manufactured through an advanced bleaching process that transforms natural kraft pulp into a premium bright white surface. The production involves chlorine dioxide treatment to achieve maximum brightness levels while maintaining structural integrity. This specialized manufacturing creates superior ink receptivity and color reproduction capabilities. The bleaching process removes lignin and other color-causing compounds, resulting in exceptional whiteness that enhances print quality. Multiple coating layers are applied during production to ensure consistent surface smoothness and optimal printing performance across various applications.

Premium bleached kraft construction
Advanced chlorine dioxide processing
Superior ink adhesion properties
Multi-layer coating application
Enhanced color saturation delivery

Corrugated Board Process

Flute Types & Formation

Corrugated Formation

Corrugated Board Performance

Single Wall

Min. Burst Strength (lbs/sq in)	Min. Edge Crust Test (lbs/in)	Min. Combined Weight of Facings (lbs/m sq ft)	Max Weight of Box and Contents (lbs)	Max Outside Dimensions (L + W + D in)
125 lbs/sq in	23 lbs/in	52 lbs/m sq ft	20 lbs	40 in
150 lbs/sq in	26 lbs/in	66 lbs/m sq ft	35 lbs	50 in
175 lbs/sq in	29 lbs/in	75 lbs/m sq ft	50 lbs	60 in
200 lbs/sq in	32 lbs/in	84 lbs/m sq ft	65 lbs	75 in
250 lbs/sq in	40 lbs/in	111 lbs/m sq ft	80 lbs	85 in
275 lbs/sq in	44 lbs/in	138 lbs/m sq ft	95 lbs	95 in
350 lbs/sq in	55 lbs/in	180 lbs/m sq ft	120 lbs	105 in

Double Wall

Min. Burst Strength (lbs/sq in)	Min. Edge Crust Test (lbs/in)	Min. Combined Weight of Facings (lbs/m sq ft)	Max Weight of Box and Contents (lbs)	Max Outside Dimensions (L + W + D in)
200 lbs/sq in	42 lbs/in	92 lbs/m sq ft	80 lbs	85 in
275 lbs/sq in	48 lbs/in	110 lbs/m sq ft	100 lbs	95 in
350 lbs/sq in	51 lbs/in	126 lbs/m sq ft	120 lbs	105 in
400 lbs/sq in	61 lbs/in	180 lbs/m sq ft	140 lbs	110 in
500 lbs/sq in	71 lbs/in	222 lbs/m sq ft	160 lbs	115 in
600 lbs/sq in	82 lbs/in	270 lbs/m sq ft	180 lbs	120 in

Triple Wall

Min. Burst Strength (lbs/sq in)	Min. Edge Crust Test (lbs/in)	Min. Combined Weight of Facings (lbs/m sq ft)	Max Weight of Box and Contents (lbs)	Max Outside Dimensions (L + W + D in)
700 lbs/sq in	67 lbs/in	168 lbs/m sq ft	240 lbs	111 in
900 lbs/sq in	80 lbs/in	222 lbs/m sq ft	260 lbs	115 in
1100 lbs/sq in	90 lbs/in	264 lbs/m sq ft	280 lbs	120 in
1300 lbs/sq in	112 lbs/in	360 lbs/m sq ft	300 lbs	125 in

E-Flute

Min. Burst Strength (lbs/sq in)	Min. Edge Crust Test (lbs/in)	Min. Combined Weight of Facings (lbs/m sq ft)	Max Weight of Box and Contents (lbs)	Max Outside Dimensions (L + W + D in)
150 lbs/sq in	26 lbs/in	66 lbs/m sq ft	35 lbs	50 in
200 lbs/sq in	32 lbs/in	84 lbs/m sq ft	65 lbs	75 in

Corrugated Strength Tests

Edge Crush Test

Edge Crush Test (ECT) measures the compressive strength of corrugated board when force is applied to its edge. This standardized testing method determines how much weight the material can support before structural failure occurs. The test involves placing a sample between two plates and applying increasing pressure until the board crushes. ECT values are critical for calculating box compression strength and ensuring packaging meets shipping requirements. Higher ECT ratings indicate superior stacking strength and better protection during transportation and storage applications.

Bursting Test

Bursting Strength Test measures the resistance of corrugated board to rupturing under uniformly applied pressure. This test uses a Mullen tester that applies hydraulic pressure through a rubber diaphragm until the material bursts. The bursting strength indicates the material’s ability to withstand impact and rough handling during shipping and storage. Results are expressed in pounds per square inch (PSI) or kilopascals (kPa). This testing method is essential for determining packaging durability and ensuring adequate protection for products during distribution cycles.

Standard Mailer Boxes

Mailer Box without Flaps

Mailer Box without Dust Flaps

Mailer Box with Adhesive

Rigid Box (Full Cover Lid)

Rigid Box (Partial Cover Lid)

Why Natural Kraft Board Is the Smart Choice for Sustainable Packaging – BonitoPack

In a world where eco-conscious packaging is no longer optional, Natural Kraft Board stands out as the perfect blend of durability, sustainability, and aesthetic appeal. At BonitoPack, we use premium natural kraft board to create packaging boxes that not only protect your products but also reflect your brand’s commitment to the environment. Whether you’re in retail, cosmetics, food, or gifting, Kraft Board offers a clean, organic look with unmatched functional benefits.

What Is Natural Kraft Board?

Natural kraft board is a paperboard material made from unbleached wood pulp. It retains its natural brown color, giving it an earthy and organic appearance. Unlike bleached or chemically treated boards, kraft board is minimally processed, making it a more eco-friendly option. It’s known for its high tensile strength, excellent printability, and resistance to tearing—key traits that make it ideal for packaging applications.

Why We Use Natural Kraft Board at BonitoPack

At BonitoPack, sustainability meets performance. Natural kraft board offers the best of both worlds. It allows us to design durable and attractive boxes without compromising on environmental responsibility. Our packaging solutions made from Kraft board are 100% recyclable and biodegradable. Plus, the rustic look of natural kraft complements everything from artisanal products to luxury items when combined with the right finishing techniques

Key Benefits of Natural Kraft Board Packaging

Strength and Durability

Kraft board’s high tear resistance makes it ideal for packaging products that need extra protection. It’s especially suited for shipping boxes and subscription packaging.

Sustainable and Eco-Friendly

Made from virgin or recycled wood pulp, kraft board is recyclable, compostable, and biodegradable. Choosing it reduces your environmental footprint and supports sustainable forestry.

Excellent Print Compatibility

Despite its textured surface, Kraft board works well with various printing methods, including screen, digital, and offset printing. Brands can easily add logos, patterns, and colors to enhance shelf appeal.

Cost-Effective Solution

Compared to bleached or laminated boards, kraft board is more economical. It offers a low-cost yet high-impact packaging option for businesses of all sizes.

Natural Aesthetic Appeal

Its signature brown tone offers a rustic, authentic, and handcrafted vibe. This natural look aligns well with modern consumer preferences for minimal, honest, and eco-conscious branding.

Ideal Uses of Natural Kraft Board

BonitoPack uses natural kraft board across a wide range of packaging solutions, including:

Product display boxes
Shipping cartons
Food-safe containers (with food-grade linings)
Gift and favor boxes
Subscription and eCommerce packaging

The material is versatile enough to support die-cutting, embossing, foil stamping, and window patching for a premium finish that still feels grounded and eco-friendly.

Custom Kraft Packaging with BonitoPack

Our team specializes in designing custom packaging solutions that bring out the best in your products while maintaining eco-conscious values. Whether you want minimalist branding or full-color designs on natural kraft, we offer a range of printing, coating, and finishing options to make your packaging stand out. Every box is crafted with attention to detail, using high-grade kraft board for durability, performance, and visual appeal.

Industries That Benefit from Kraft Board Boxes

Retail: Sturdy kraft packaging elevates product presentation and reflects quality.
Food & Beverage: Safe for dry food packaging when lined; perfect for eco-conscious cafes and bakeries.
Cosmetics & Skincare: Enhances natural or organic product positioning.
Gifting: Elegant and earthy designs add charm to gift items.
E-commerce: Lightweight yet strong packaging is ideal for safe deliveries.

Make the Eco-Switch with BonitoPack

If you’re looking to reduce waste, build a sustainable brand image, and create durable packaging that leaves a lasting impression, natural kraft board is your go-to material. BonitoPack is proud to offer custom kraft packaging solutions that check all the boxes for style, strength, and sustainability. Let’s build packaging that’s better for your brand—and the planet.

Blogs

Facilities

Abdout Us

Knowledge Base

Case Studies

Watch and Learn