Paper cup for coffee or paper cup is a kind of disposable cup originally made of paper coated with plastic to prevent liquid from seeping through the paper cup. This coating is also made from recycled paper or newspaper. This kind of paper coffee cups was the first to appear after the traditional porcelain coffee cup.
These kinds of cups are seen in several establishments such as: hospitals, schools, several cafeterias administrative offices, for reasons of hygiene.
For the creation of this type of glass base paper called cupboard is used, and it is manufactured in paper machines.
They have a coating in the shape of a waterproof barrier that requires high rigidity and strength. It needs a particular design for the manufacture of the glass. To fulfil hygienic requirements, papers are usually made of new materials that in particular is not recycled. The most effective paper coffee cups are the ones that withstand the heat and do not leak through the crease. The only exception is that the cup includes an extra insulating layer to keep the heat inside of itself.
The waterproofing of these cups when they first started was done in a much different way than nowadays. Before they were waterproofed by depositing a quantity of clay at the end of the glass, the glass began to rotate at a great speed, so that the clay deposited on the bottom of the glass rose up against its walls. This waterproofs the paper of the glass.
Although this method was done, this same method made the drinks smelled like cardboard and knew the same way. In spite of this for hot drinks, this method could not be realised, since condensation was formed on the outside of the paper cup until arriving at the cardboard of the same, doing of this way the unstable glass.
In order to avoid this, the manufacturer of paper cups created the technique of spraying the glass with wax both inside and outside. However, this technique was obsolete with the creation of glass with polyethylene, with this process the cardboard surface was covered with a thin layer of polyethylene, waterproofing the cardboard and welding the joints. For some time a new kind of glass has been created, it does not need wax or plastic for the waterproofing of the glass, thus making it possible to recycle a large part of the glass.
Now that the world has globalised the coffee chains, they have also been flooded with the garbage generated by this kind of industries. In Australia alone, more than 5 million cups of coffee are consumed, where very few of these are recycled, generating a large amount of 30,000 tons of garbage per year.
Coffee cups are usually made of laminated paper and plastic, which makes them difficult to recycle. With all this in mind and aware that the amount of waste generated by this industry has led an English investor, to create a glass containing an easy plastic film to separate in any recycling plant, thus leaving a paper 100% recyclable.
Environmentalists from all around the world applauded this invention, stating that this product on the market will be an innovation for the plastic cup industries in general. And possibly this movement will help that related industries such as the food industry that abuse the excessive use of packaging be aware that the vast majority cannot recycle to create more recyclable packaging.