Uncoated Bleached Kraft Paper (UBK)
Uncoated Bleached Kraft Paper offers a clean white appearance with a natural, matte surface. The absence of coating gives it a soft, organic feel while still providing strong printing capability.
AAA Pak uses UBK for packaging where simplicity, sustainability and elegance are important.
Benefits
• Clean white surface ideal for natural or minimal designs
• Strong and durable despite having no coating
• Fully recyclable and eco-friendly
Best Used With
Uncoated Unbleached Kraft Paper Overview
Uncoated Unbleached Kraft Paper is a minimally processed paper made from virgin wood fibers without chemical bleaching or surface coatings. By preserving the paper in its natural state, this material retains its original fiber strength, earthy tone, and breathable surface making it one of the most environmentally responsible paper options available for packaging.
Unlike coated or bleached papers, uncoated unbleached kraft offers a raw, authentic appearance with visible fibers and a slightly textured surface. This natural finish enhances its durability while allowing the paper to perform exceptionally well in applications that require flexibility, tear resistance, and airflow. Printed graphics appear more subdued and organic, reinforcing a natural and honest brand aesthetic.
This paper is widely used for packaging that prioritizes sustainability, functionality, and material integrity. Its consistent formation ensures dependable converting performance, making it suitable for die-cutting, folding, and gluing across a variety of packaging formats.
Key Benefits of Uncoated Unbleached Kraft Paper
- Made from virgin fibers with no chemical bleaching
- Natural brown tone with visible fiber texture
- Excellent tear resistance and tensile strength
- Breathable surface ideal for food and agricultural uses
- Fully recyclable and biodegradable
- Supports eco-conscious and minimalist branding
- Reliable converting performance for packaging production
(Uncoated Unbleached Kraft Paper – Approximate Specifications)
| Paper Weight (GSM) | Approx. Thickness (Microns) | Material Character | Common Uses |
|---|---|---|---|
| 120–150 GSM | ~170–220 μ | Flexible | Food wraps, liners |
| 180–220 GSM | ~250–310 μ | Medium strength | Shopping bags, sleeves |
| 250–300 GSM | ~340–410 μ | Semi-rigid | Folding cartons, bakery boxes |
| 350 GSM+ | ~430 μ+ | Heavy-duty | Industrial packaging, carry bags |
Typical Applications of Uncoated Unbleached Kraft Paper
Eco-friendly product packaging
Food and agricultural packaging
Bakery and takeaway packaging
Shopping and carry bags
Organic and natural brand packaging
Industrial liners and wraps