Views: 0 Author: Site Editor Publish Time: 2025-09-30 Origin: Site
Kraft fibers help liner board stay strong for packaging. Kraft paper is better than recycled paper because it does not burst or tear easily.
Burst strength tells how much pressure the paper can take.
Tensile strength shows how well the fibers stick together.
Kraft paper works well and is good for eco-friendly packaging.
Kraft fibers give liner board great strength. This makes it good for strong packaging.
Kraft paper has high burst and tensile strength. This stops it from tearing or bursting. It helps keep goods safe during transport.
Using kraft liner board helps the environment. It also gives strong and long-lasting packaging.
Liner board needs to handle lots of pressure. Burst strength shows how much force kraft paper can take before breaking. If you pack heavy or sharp things, strong burst strength keeps boxes from opening. Boxes made with corrugated board get pushed along the edges. The outside layer uses kraft paper and reaches its limit fast when squeezed. Having the right burst strength helps keep packages safe when shipped or stacked.
Tensile strength tells how well kraft paper fibers stay together. If you want boxes that do not rip, look for high tensile strength. Kraft liner board uses long, tough fibers. These fibers make the paper stronger. When you lift or move boxes, tensile strength stops the board from tearing. This keeps your things safe inside.
Basis weight means how much kraft paper weighs in a set area. You can use this number to compare liner boards. Heavier basis weight often means stronger and better boxes. Kraft paper with more basis weight can handle rough use. It also helps boxes keep their shape. If you need boxes for wet places, coated kraft linerboard works best.
Coated unbleached kraft paperboard resists water and prints well. Your packaging looks nice and lasts longer.
| Linerboard Type | Printability | Strength | Cost |
|---|---|---|---|
| Kraft Linerboard | Good print quality, great for logos | Very strong and protects well | Usually costs more because of new fibers |
| White Linerboard | Best print quality for sharp images | Strength depends on the base linerboard | Price changes with base linerboard |
| Recycled Linerboard | Simple branding, less clear prints | Medium strength, good for the planet | Usually costs less because of recycled stuff |
Kraft paper gives you strong, tough, and good-looking packaging. That is why kraft liner board is a great choice for boxes that need to work well.
The kind of fiber in liner board is very important. Virgin kraft fibers are the strongest. These fibers come straight from wood pulp. They have not been used before. Long and strong fibers give high tear and tensile strength. Kraft paper made from virgin fibers holds together well. It does not break easily.
Virgin kraft fibers give much better tensile strength than recycled fibers.
Recycled fibers lose their bonding power after many uses. This makes liner board weaker.
Kraft liner made with virgin fibers has high tear and tensile strength.
Recycled pulp fibers lower the tensile strength compared to virgin fibers.
Recycled fibers lose quality each time they are reused. Wetting and drying damage them.
You should also think about the environment. Virgin kraft paper has a tighter fiber structure. It resists moisture and grease. Recycled kraft paper uses less energy and water. This helps save trees and keeps waste out of landfills. Post-consumer recycled fiber is better for the environment than pre-consumer recycled fiber. Virgin fibers come from forests that are managed well. Recycled fibers help the planet by reducing landfill waste and energy use. You can only recycle them five to seven times before they get too weak.
Fiber length is very important for liner board. When fiber length gets too short, the board loses strength. Damage or defects in the fiber can also lower the strength and stability of the board.
| Evidence | Description |
|---|---|
| Critical Fiber Length | Fiber length affects performance when it drops below a critical length. |
| Fiber Strength | Damage to fibers reduces strength and affects the whole board. |
The kappa value shows how much lignin is left in the pulp. This number helps you know how strong and tough the kraft paper will be. For unbleached wood pulp, the kappa value is usually between 40 and 100. Higher kappa values mean more lignin. This can make the paper stronger and tougher.
| Type of Pulp | Kappa # Range |
|---|---|
| Hardwood Pulp for Bleaching | 14 - 20 |
| Softwood Pulp for Bleaching | 20 - 30 |
| Wood pulp to be used Unbleached | 40 - 100 |
Kraft liner board is lighter than recycled fiber-based liner board. To match kraft liner, recycled liner must be about 10 to 15% heavier. Kraft liners also resist moisture better. This is important for boxes that need to stay strong in wet places.
You have two main choices for liner board. Kraft linerboard uses virgin wood pulp. Testliner uses recycled paper fibers. Kraft linerboard gives high strength. It works well for heavy-duty packaging. Testliner costs less and is better for the environment. It is best for lighter packaging needs.
Kraft linerboard is made from virgin fibers. It is strong and tough. You can use it for heavy items.
Testliner is made from 100% recycled fibers. It costs less and is better for the planet. It is not as strong.
Kraft linerboard is great for heavy-duty packaging. Testliner works for lighter items.
Here is a table to help you compare:
| Feature | Kraft Linerboard | Testliner |
|---|---|---|
| Material Composition | Made from virgin wood pulp | Made from recycled paper |
| Surface Finish | Rough, brown surface | Smooth surface |
| Strength | High strength, suitable for heavy items | High strength, but less than kraft |
| Applications | Used for heavy-duty packaging | Used for lightweight packaging |
Kraft paper is made from virgin pulp. It has higher strength. You can use it for packaging cement, chemicals, or other heavy things. Testliner is made from mostly recycled pulp. It has lower strength. It works best for less demanding packaging jobs. This difference in strength changes how you use each type in packaging.
Cost is another thing to think about. Kraft linerboard costs more because it uses new fibers. It gives better strength. Testliner is cheaper because it uses recycled fibers. You can choose Testliner if you want to save money and do not need as much strength.
New technology helps improve the strength of kraft liner board. Better ways to test and control fiber quality give better results. Online testing and automated sampling give quick data. You can adjust the process and keep the board strong. Closed-loop control lets you change how you refine the pulp and blend the fibers. This helps keep the strength and stability steady. It also helps machines run better.
Tip: If you need boxes for heavy or wet items, pick kraft linerboard. If you want to save money and use lighter packaging, Testliner is a good choice.
Image Source: pexels
Kraft fiber-based liner board is great for tough jobs. It has 70-80% virgin chemical pulp fiber. This makes it strong and durable for shipping heavy things. Boxes made with this liner board can handle pressure and shaking. They also stand up to rough handling. You can add layers to make the board resist moisture. This helps boxes last in humid or changing temperatures. Corrugated packaging with kraft liner board keeps fragile items safe during shipping. You can trust this paper to protect your goods.
Kraft liner board is good for heavy shipping.
Stiffness and strength help boxes avoid damage.
Extra layers help boxes stay dry in wet places.
Corrugated packaging absorbs bumps and keeps items safe.
You want packaging that is strong, affordable, and good for the planet. Makers try to improve how packaging works and lower harm to nature. Kraft liner board can use up to 25% recycled fiber. This cuts down on waste and saves resources. Using less energy and water helps the environment. Eco-friendly materials like recycled paper and biodegradable plastics are better for nature.
You pick paper grades for their special features and eco benefits.
Strong materials keep products safe and help save money.
Recyclable choices help the planet.
Kraft liner board is strong and resists moisture, so it works well for tough jobs.
Testliner uses fibers from old products and needs less water and energy.
Kraft liner board will likely be used a lot because it works well and is high quality.
Testliner has two layers to look better and be stronger.
Recycling paper breaks down old boxes, cleans them, and makes new testliner that is good for the planet.
Tip: You can help the planet by picking packaging with recycled fibers and eco-friendly materials. This keeps quality high and protects nature.
When you pick kraft fibers for liner board, you get clear benefits. Kraft paper is stronger at the edge, does not burst easily, and stops sharp things from poking through. New types like wet-strength grades and LMNFC make boxes last longer and help the planet. As rules and technology change, packaging will get better for the environment and work even harder.
| Strength Characteristic | Description |
|---|---|
| Edge Crush Strength | Kraft paper takes more force on the edge than recycled paper. |
| Burst Strength | Kraft paper stands up to quick pressure and keeps boxes safe. |
| Puncture Resistance | Kraft paper blocks sharp things during shipping. |
SCA Containerboard’s wet-strength liner and LMNFC make boxes stronger and greener.
Governments now want recycled content and carbon footprint reports, so companies invent new ideas.
Kraft liner board is good for the planet. It uses less energy and water to make. The wood comes from forests that are taken care of. This makes it a smart choice for green packaging.
You can recycle kraft liner board. It also breaks down in nature. This means you make less trash and help the earth.
Kraft liner boards are great for the environment. They can be recycled and break down over time. You help nature and keep your things safe at the same time.
