Regular diameter is 6mm/7mm/9mm/11mm, length can be customized from 150MM to 240mm, bulk pack or individual pack . The kind of coating will replace most fossil and biopolymer coatings on paper straws in the future.
Normal paper straws contain glue and wet-strength additive in the paper. That is why they are not easily recyclable in paper mills.
Glue is used to hold and bind the paper together. However, in order to hold the paper for hot drinks. Stronger glue is need. The worse situation is paper strips in paper straws are usually “immersed” in a glue bath during the manufacturing process. It makes the paper fiber are surrounded by glue and make the fiber useless even after recycling.
Wet-strength agent is important additives in most paper straws. This is a chemicals to hold paper (cross-link) fiber together so that the paper can maintain a better strength when it is wet. Common use in kitchen paper towel and tissue. Wet-strength agents can make paper stronger and last longer in drinks BUT it also makes normal paper straw not feasible for recycling. As you may know, kitchen paper towel is NOT suggested for recycling! It is the same reason here.
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