4 Blue Waves is one solution to the current
coated paper product recycling problem.
Unlike traditional plastic coatings, our coating is made with EarthCoating® which is engineered for efficient processing in existing recycling systems as shown below. Check with your local recycle center to confirm if recycled in your area and encourage them to register their commitment here.
- Waste paperboard products are separated from other trash, bundled, and brought to the paper mill recycling facility.
- In the pulping process, the paper is shredded into small bits. Water and chemicals are then added, turning the mixture into pulp.
- After pulping, the screening process uses either slots or holes to remove contaminates that are larger than pulp fibers. EarthCoating® particles that are not removed, safely pass through these screens. Traditional plastic coatings produce large flakes lighter than water that clog and disrupt the screening process.
- The centrifugal cleaner sorts based on particle density. Particles more dense than water such as dust, dirt and grit are removed. The EarthCoating® particles are discharged during the cleaning process.
- Next whitening agents may be added to enhance the brightness if a white color is desired. This continually bleaches the pulp until it is ready for final processing stage. Unbleached fibers remain brown.
- Centrifugal force is used in fine cleaning to separate smaller particles from the pulp fibers. EarthCoating® particles that have advanced through the cycle are removed in this step.
- Deinking involves blowing air into the pulp resulting in air bubbles that lift the ink to the surface and form a thick froth that can then be removed. Flotation deinking is very effective in removing larger ink particles.
- The color of deinked pulp results primarily from pigmented inks or dyes that are made up of joined molecules. Decolorization is the process of breaking these molecular bonds in order to remove the pigments.
- The pulp is washed further by passing water through it. It is then sent over rollers to press out the excess water. As it proceeds through steam heated rollers, sheets of paper form. At this stage, coatings are sometimes added to keep ink from spreading.
- Finally, the ends of the rolls are trimmed and recycled to make new pulp.