How are tea bags made?

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asked May 2 in Other-Food Drink by Pickleface32 (920 points)
How are tea bags made?

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answered May 8 by Marlene99 (3,480 points)
The way tea bags are made through the manufacturing process is two large rolls of filter paper are fed over the top and underneath the doser wheel.

As each chamber arrives at the bottom of the doser wheel, it then releases the tea onto the bottom paper layer of paper as it moves along a conveyer belt.

The top layer of paper is lowered onto the lower layer so that each measure of tea is sandwiched between the two layers.

A conveyer belt moves the three components to a heat-sealing drum fitted with an indentation pattern.

The drum quickly seals the paper along the indentation lines.

The timing of this process is closely monitored because too much heat would adversely affect the tea.

The sealed paper continues along a conveyer belt until it reaches a perforation blade that is calibrated to cut the paper into precise squares.

After a string and tag are stapled to the bag, they are dropped into pre-printed boxes.

The material that most tea bags are made from is filter paper or paper while some tea bags are made from plastic.

The plastic that some tea bags are made from is food grade plastic and safe for humans.

Some brands of tea bags are made from plastic although the majority of tea bags are made from paper or filter paper.

Most tea bags however do use at least some plastic as a sealant to seal the tea bag after the tea has been added to the tea bag.

Some brands of the tea bags use polypropylene plastic as the sealant.

A lot of tea brands have been making the move towards completely biodegradable tea bags, finding alternatives to plastic and plastic sealants.

A tea bag is a small, porous, sealed bag or packet, typically containing tea leaves, which is immersed in water to steep and make an infusion.

Originally used only for tea, they are now made with other tisanes as well.

Tea bags are commonly made of filter paper or food-grade plastic, or occasionally of silk cotton or silk.

The tea bag performs the same function as a tea infuser.

Tea bags can be used multiple times until there is no extraction left.

Some tea bags have an attached piece of string with a paper label at the top that assists in removing the bag, while also displaying the brand or variety of tea.

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