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Toothbrush Product Life-cycle

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by

Kyle Davin

on 5 May 2014

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Transcript of Toothbrush Product Life-cycle

Toothbrush Product Life-cycle

Raise & Extract
The recycle number for polypropylene is 5.
Polypropylene is made of Propylene monomer
Polypropylene's chemical formula is C3H6
The bristles are made of nylon which is also recyclable.
Nylon's recycling symbol is 7.
Nylon’s chemical formula is C12H22N2O2


Process
Toothbrushes are made of polypropylene plastic.
Polypropylene plastic- this is made by slurry, that is when the propylene monomer undergoes heat and pressure in the ubiquity of a complex catalyst system.
Nylon bristles are man-made. Nylon is enduring and light weight. The fibers are also sleek, nonabsorbent and dry quickly.


Manufacture
Plastic is molded into pellets. The pellets are then put into a molding machine, which heats the plastic until in a liquid form. A screw forces the liquid plastic into the molds. The molds form the whole handle. The molds are clamped tightly, and pressure is applied to the molds while the plastic cools. Once the molds have finished cooling, the clamps are removed, and small pins push the handles out of the molds.

The nylon bristles are positioned into the core of the handle automatically.


Use
The toothbrushes are packaged into plastic containers. Labels are attached to the package, providing product information such as bristle hardness, as well as recommendations for usage.

Toothbrushes are used for cleaning the teeth.

Toothbrush Product Life-Cycle
By: Hayden Roberts & Kyle Davin
Disposal
The process for recycling toothbrushes are collection, sorting, cleaning, reprocessing, and making new products from PP.
Collection- This involves accumulating used plastic products.
Cleaning- Paper labels and coloured pails are removed, then the products are granulated and washed which gives rise to “clean flake”. This flake is converted to uniformly sized pellets for easy feeding into extruder or moulder.
Reprocessing- the pellets are then fed into an extruder where it is melted at 464 degrees and cut into small granules which are now ready to use.
Works Cited

http://www.azom.com/article.aspx?ArticleID=7899

http://www.madehow.com/Volume-2/Toothbrush.html
Full transcript