non-woven cloth flat shape tea bag that have become such a natural part of our everyday lives were both conjured up and developed by Jierong New Material. Up until then, tea bags were flat and made of paper, and were not capable of bringing out the true flavor of tea due to the scent of the paper lingering on the tea itself.
As participants in the textile industry for years, we at Jierong New Material came to the conclusion that using nylon textiles as the material to make tea bags would produce a delicious cup of tea, and initiated development efforts towards that end. What resulted after bouts of trial and error was the completion of a mesh filter. Different from paper and nonwoven filters, uniform opening allows for superior extraction performance. Furthermore, we also devised the shape of the filter in a manner that enabled the tea leaves inside the tea bag to further expand. That shape is the non-woven cloth flat shape tea bag During that time that we were working on the development of these product materials and forms, an extremely high-priced machine was necessary for our customers to produce tea bags with a tag and string attached to them. However, by supplying our customers with finished filters that had tags and strings attached to them, they became able to produce tea bags with tags attached through the use of a comparatively inexpensive machine.
https://www.teabagfilter.org/non-woven-filter-cloth/tea-filter-bag-cloth/non-woven-cloth-flat-shape-tea-bag.html