How is Puggy recycled?

ist2_9713186-do-your-recycling.jpgSorting
Successful recycling requires Puggy and other paper wastes to be free from contaminants such as food, plastic, metal, glitter and other non paper based materials which makes
them difficult to recycle. Contaminated paper which cannot be recycled must be composted, burned for energy or landfilled.

Collection
Don’t just throw Puggy away. Fold Puggy back into it’s carton and leave the whole box out the front of your home on recycling nights for the recycling truck to pick up in the morning.

Storage
Puggy is put it into warehouses with other paper wastes where it is stored until needed. The various paper grades such as newspapers and corrugated boxes (Puggy) are kept separate, because the paper mill uses different grades of recovered paper to make different types of recycled paper products. When the paper mill is ready to use the paper, forklifts move the paper from the warehouse to large conveyors.

Re-pulping and Screening
Puggy along with other paper waste move by conveyor to a big vat called a pulper which contains water and chemicals. The pulper chops the recovered paper into small pieces. Heating the mixture breaks the paper down more quickly into tiny strands of cellulose (organic plant material) called fibres. Eventually, the old paper turns into a mushy mixture called pulp. The pulp is forced through screens containing holes and slots of various shapes and sizes. The screens remove small contaminants such as bits of plastic and globs of glue. This process is called screening.

Cleaning
Mills also clean pulp by spinning it around in large cone-shaped cylinders. Heavy contaminants like staples are thrown to the outside of the cone and fall through the bottom of the cylinder. Lighter contaminants collect in the centre of the cone and are removed. This process is called cleaning.

De-Inking
Sometimes the pulp must undergo a "pulp laundering" operation called de-inking to remove printing ink and "stickies" (sticky materials like glue residue and adhesives). Papermakers often use a combination of two de-inking processes. Small particles of ink are rinsed from the pulp with water in a process called washing. Larger particles and stickies are removed with air bubbles in another process called flotation. During flotation de-inking, pulp is fed into a large vat called a flotation cell, where air and soap-like chemicals call surfactants are injected into the pulp. The surfactants cause ink and stickies to loosen from the pulp and stick to the air bubbles as they float to the top of the mixture. The inky air bubbles create foam or froth which is removed from the top, leaving the clean pulp behind.

Refining, Bleaching and Colour Stripping
During refining, the pulp is beaten to make the recycled fibres swell, making them ideal for papermaking. If the pulp contains any large bundles of fibres, refining separates them into individual fibres. If the recovered paper is colored, color stripping chemicals remove the dyes from the paper. Then, if white recycled paper is being made, the pulp may need to be bleached with hydrogen peroxide, chlorine dioxide, or oxygen to make it whiter and brighter. If brown recycled paper is being made, such as that used for industrial paper towels, the pulp does not need to be bleached.

Papermaking
Now the clean pulp is ready to be made into paper. The recycled fibre can be used alone, or blended with new wood fibre (called virgin fibre) to give it extra strength or smoothness. The pulp is mixed with water and chemicals to make it 99.5% water. This watery pulp mixture enters the headbox, a giant metal box at the beginning of the paper machine, and then is sprayed in a continuous wide jet onto a huge flat wire screen which is moving very quickly through the paper machine. On the screen, water starts to drain from the pulp, and the recycled fibres quickly begin to bond together to form a watery sheet. The sheet moves rapidly through a series of felt-covered press rollers which squeeze out more water.

The sheet, which now resembles paper, passes through a series of heated metal rollers which dry the paper. If coated paper is being made, a coating mixture can be applied near the end of the process, or in a separate process after the papermaking is completed. Coating gives paper a smooth, glossy surface for printing.

Finally, the finished paper is wound into a giant roll and removed from the paper machine. One roll can be as wide as 30 feet and weigh as much as 20 tons! The roll of paper is cut into smaller rolls, or sometimes into sheets, before being shipped to a converting plant where it will be printed or made into products such as envelopes, paper bags, boxes or more Puggy cubbies! www.dawallets.com

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