What are the materials of tea bags?

To say that there are several kinds of tea bag materials, the common tea bag materials on the market are corn fiber, non-woven pp material, non-woven pet material and filter paper material, and

Paper tea bags that the British drink every day. Which kind of disposable tea bag is good? Below is an introduction to these types of tea bags.

1. Corn fiber tea bag
Corn fiber is a synthetic fiber made from corn, wheat and other starches as raw materials, which are specially formulated into lactic acid and then polymerized and spun. It is a fiber that completes natural circulation and is biodegradable. The fiber does not use petroleum and other chemical raw materials at all, and its waste can be decomposed into carbon dioxide and water under the action of microorganisms in the soil and seawater, and will not pollute the global environment.

2. Non-woven pp material tea bag
The pp material is polypropylene, which is a non-chiseled, odorless, and tasteless milky white highly crystalline polymer. PP polyester is a kind of amorphous, its melting point should be above 220, and its thermal shape temperature should be about 121 degrees. But because it is a macromolecular polymer after all, the higher the temperature, the smaller the analysis
The greater the possibility of oligomers, and most of these substances are not good for human health. Moreover, according to the customer’s usage, the boiling water is generally 100 degrees, so the general plastic cups will not be marked with more than 100 degrees.

3. Non-woven pet material tea bag
As a packaging material, PET has excellent high and low temperature resistance. It can be used for a long time in the temperature range of 120 degrees, and it can withstand high temperature of 150 degrees for short-term use. The permeability of gas and water vapor is low, and it has excellent gas, water, oil and peculiar smell resistance. High transparency and good gloss. It is non-toxic, tasteless, and has good hygiene and safety, and can be directly used in food.

4. Tea bags made of filter paper
In addition to the filter paper used in general laboratories, there are many applications of filter paper in daily life, and coffee filter paper is one of them. The filter paper on the outer layer of the tea bag provides high softness and wet strength. Most filter papers are made of cotton fibers, and there are countless small holes on its surface for liquid particles to pass through, while larger solid particles are not mentioned.

5. Paper tea bags
One of the raw materials used in this paper tea bag is abaca. This material is thin and has long fibers. The produced paper is strong and porous, creating suitable conditions for the diffusion of tea flavor. The other raw material is a plastic heat-sealing fiber, which serves to seal the tea bag. This plastic does not start to melt until it is heated to 160°C, so it is not easy to disperse in water. In order to prevent the tea bag itself from dissolving in water, a third material, wood pulp, is also added. After the abaca and plastic mixture was drained, it was coated with a layer of wood pulp, and finally put into a 40-meter-long large paper machine, and the tea bag paper was born.

Post time: Nov-18-2021