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
The paper tea bag that the British drink every day. Which disposable tea bag is best? Here are some of these tea bags.
1. Corn fiber tea bag
Corn fiber is a synthetic fiber made from corn, wheat and other starches, which are specially prepared into lactic acid, and then polymerized and spun. It is a fiber that completes the natural cycle and is biodegradable. The fiber does not use chemical raw materials such as petroleum 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 earth's environment.
2. Tea bags made of non-woven pp material
The pp material is polypropylene, which is a non-angular, odorless, tasteless milky white highly crystalline polymer. PP polyester is an amorphous substance, its melting point should be above 220°C, and the thermoforming temperature should be around 121°C. But because it is a high molecular polymer after all, the higher the temperature,
The possibility of precipitation of oligomers is smaller, and most of these substances are harmful to human health. And according to the customer's usage, boiling water is generally 100 degrees, so ordinary 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 the high temperature of 150 degrees for short-term use. Low gas and water vapor permeability, excellent gas, water, oil and odor performance. High transparency and good gloss. It is non-toxic, tasteless, hygienic and safe, and can be directly used in food.
4. Tea bags made of filter paper
In addition to filter paper used in general laboratories, filter paper has many applications in daily life, and coffee filter paper is one of them. The filter paper on the outside of the tea bag provides high softness and wet strength. Most filter papers are made of cotton fibers with countless small pores on the surface for liquid particles to pass through, not to mention larger solid particles.
5. Paper tea bags
One of the raw materials used in this paper tea bag is abaca. The material is thin and has long fibers. The made paper is tough and porous, which creates suitable conditions for the diffusion of tea flavor. Another raw material is the plastic heat-seal fiber, which acts 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 added. After the mixture of abaca and plastic is drained, it is coated with a layer of wood pulp, and finally put into a large paper machine with a length of 40 meters. This is how the teabag paper was born.
