Life of a Milk Carton/Bottle

The process of my life as milk

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The Beginning

Milk life begins from a calf (usually they are holstein calfs) to a cow. Then she will grow into a diary cow and begin eating grass, grain, hay or silage for around 8 hours and then sleep for another 8 hours.


Dairy cows don't start producing milk until they had their first calf. After that the dairy cows are milked twice a day. The milk travels through milking lines to the stainless steel pipes. The pipes then lead to refrigerated storage tanks and milk is cooled down to 4 degree Celsius.



Transportation

Milk in the storage tanks are then transferred to tankers, the driver of the tankers must check for its freshness and quality before leaving.


The trucks have large stainless steel refrigerated tanks that keep the milk cool during the transportation.


During the transportation, the truck emits CO2 into the air.


Testing and Storage

The milk is then delivered to the nearest milk processing plant. It is again tested for freshness, quality and also the amount of protein it contains. The milk will then be pumped into large processing vats.



The milk then goes through a process called pasteurization: when the milk is heated and then cooled again to make sure that the milk is germ-free.


In order to make the milk more creamy and smooth it goes through the process of homogenization: the milk gets pushed through tiny holes which mixes the cream evenly into the milk


Afterwards the milk is put into storage again to be kept cool for packaging while some milk is processed further to make other dairy products.

Packaging

Milk is sent through the processing line to be package in either cartons or bottles. Cartons are made out of cardboard lined with polyethylene plastic and bottles are made out of either glass, or plastic that is made out of high-density polyethylene (can be easily recycled).

The End

Dairy are stored in cool rooms before being transported to supermarkets.



We buy milk from supermarket and take it home.