2012-07-21

Video Reflection- How it's made, Giving packaging a new life


All the videos are talking about how the packaging is made nowadays.
For the cardboard box, basically they share three basic structure components: one sheet of paper called flute, the sandwich between two flat sheets is called liner and together forms what is called corrugate board. The waves create the air cushion between the flute and liner and strengthen the boards. Double liners can be made to add the strength. After trimming the handles of the cardboards, they are folded and glued to join the box.
Packaging tubes are widely used as toothpastes, glue, skin cream and so on, they are usually made from aluminum, which is affordable. The impact extrusion is applied on the aluminum to form the shape, then the thread is cut out on the neck using a trimming machine. After that, a coat is applied inside the tube to protect the aluminum from inside content. Polyester paint and information is then printed on the tube. After it dries, a cap is screwed on.
Tetrapak can keep drink and food fresh for one year without fridge. They are mostly made from paper, they have three layers: plastic layer, paperboard and foyer. A plastic coating makes it lid proof. The general process of the tetrapak is print, lamination, cut, fill with product, seal and fold.
Aluminum cans can be fully recycled without any loss. Firstly aluminum sheets is punched into round sheets and then made into a cup. Machine draws out the cup forming the body of the can and the edge is trimmed and cleaned. After washed and dried, print is applied on the cans. The production rate of cans is very high.
Glass bottles are natural and green and they can be recycled endlessly. Less energy is used to make glass bottles then producing metal or plastics. The molten glass is cut into certain amount of glass and goes in the mold then is blow up into bottles. Then the bottles go through fire to prevent from cooling too quickly and crack.
Plastic bottles are light to carry, no glass is left on the ground when dropped. They are mostly made from PET. The performs are made from molten PET with 10% recycled PET, then the performs are blow up in extremely high pressure forms the body and cools down.

From the videos of giving packaging a new life, we can know what kind of materials can be recycled and how they are recycled.
For paper recycling, waste paper is sorted into different quality of paper. After the print is removed, raw material is added to produce different types and quality of paper. Finally, paper sheet is pressed, drained and dried. Tetrapak contains aluminum. Aluminum and paper are separated. The paper is used to produce premium sheets of paper. Tinplates and aluminum are separated from the waste using magnates, and then melted to make new products. Glass is recycled by different colors. Plastics is separated using machine by different materials and colors and then recycled.

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