What Is Thermal Paper?

 About BPA

 Some thermal printer papers are coated with BPA, a chemical considered to be an endocrine disruptor. This   material can contaminate recycled paper. BPA can transfer readily to the skin in small amounts:

When taking hold of a receipt consisting of thermal printing paper for five seconds, roughly 1 μg BPA (0.2–0.6 μg) was transferred to the forefinger and the middle finger if the skin was rather dry, and about ten times more than this if these fingers were wet or very greasy. Exposure to a person who repeatedly touches thermal printer paper for about ten hours per day, such as at a cash register, could reach 71 micrograms per day, which is 42 times less than the present tolerable daily intake (TDI).

The chemical bisphenol A (BPA) is used for thermal paper coatings because of its stability and heat-resistance. This allows inkless printing for receipts from cash registers. People who often are in contact with BPA coated receipts do have a higher level of BPA in their bodies than people with average contact. Therefore, the New York Suffolk County signed a resolution to ban BPA in thermal receipt paper rolls. Violation of this new law, the "Safer Sales Slip Act", involves a US$500 penalty. The law became effective beginning January 3, 2014.

From about 2013 bisphenol S (BPS), an analog of BPA that has been shown to have similar in vitro estrogenic activity to BPA,has been used in thermal paper coatings. The recycling of thermal printer paper coated with BPS can introduce BPS into the cycle of paper production and cause BPS contamination of other types of paper products. Newer formulations are available which use either urea-based compounds or vitamin C, and are "phenol free".They can have comparable or even improved print quality, but cost more.

ADD WHARSAPP: +86 15202838829 to know more.