Recently, non-toxic pioneer released a sampling test report on the content of bisphenol A in thermosensitive paper. (Can a small ticket interfere with your endocrine system, believe it?) The report shows that out of 30 thermosensitive paper products sampled and submitted for inspection from three major e-commerce platforms, Taobao, JD.com, and Pinduoduo, 14 samples (47%) have BPA levels exceeding the standard, with a maximum exceeding 72 times, including some well-known domestic brands.

After the article was published, it attracted the attention and attention of Deli Group, and there was in-depth communication and discussion with non-toxic pioneers on the relevant content of the article, as well as the classification and testing of thermal sensitive paper, as well as Deli Group's breakthrough in thermal sensitive technology.

Heat sensitive paper can be divided into ordinary heat sensitive paper and special heat sensitive paper based on whether there is a protective coating on the surface. The color development principle is to apply a layer of "thermosensitive coating" on the original paper, and after being heated to a certain temperature, the color can be developed and imaged.

The thermal recording system can be divided into two categories: one is a physical type of thermal recording paper that uses heat to physically modify colored pigments to achieve recording effects; Commonly used in electrocardiogram drawings, projectors, etc; The other type is chemical type thermosensitive recording paper that uses chemical reactions under the action of heat to achieve color rendering, commonly found on cash register paper and label paper

With the continuous development of the paper industry, thermosensitive paper has rapidly become popular in various fields such as commerce, supermarkets, banks, hospitals, airports, etc., bringing great convenience to our lives. The most common ones in our daily lives are label paper and cash register paper.

In our communication with Deli Group, we learned that although both the cash register paper and label paper belong to thermal sensitive paper, the colorants used for their imaging may be different.

Label paper is mostly used for logistics transportation, and has high requirements for the storage time of printed text/barcodes. However, the properties of bisphenol A are unstable, and the handwriting after color development is easy to fade. Therefore, thermosensitive paper using bisphenol A as a color developing agent cannot meet this requirement, and bisphenol A is not commonly used as a color developing agent in label paper.

As a substitute for bisphenol A, some thermosensitive paper manufacturers use bisphenol S (BPS), sodium N, N-dimethyl-dithiocarbonylpropane sulfonate (DPS), 2,4-diphenylsulfonylphenol (DBSP), Pergafast 201 (PF201), etc. as colorants in thermosensitive paper. However, bisphenol S has a similar structure to bisphenol A and can also cause interference with the endocrine system.

Ordinary cash register paper often uses bisphenol A as the chromogenic agent. On the one hand, the storage performance requirements for cash register receipts are not high, and on the other hand, the cost of using bisphenol A as the chromogenic agent is relatively low.

Based on the above feedback, we classified the 30 thermosensitive paper products originally sampled by label paper and cash register paper categories, and analyzed the compliance rate of bisphenol A content in both. The results showed that out of 30 thermal paper products, 20 were label paper, with a compliance rate of 70%, while the compliance rate of 10 cash register paper products was only 20%.

Although GB/T 28210-2011 "Thermosensitive Paper", GB/T 39498-2020 "Guidelines for the Control of the Use of Key Chemicals in Consumer Goods", and EU standards do not differentiate between label paper and cash register paper, the above classification statistics and their results can help consumers better understand the potential risk differences between different products. (Table 2 is incorrect, as explained on the message board. Sorry for any inconvenience caused.)

Deli Group stated that due to the limitations of its existing thermal sensitive technology, the content of bisphenol A in some of Deli's thermal sensitive cash register paper products in the past has not yet met the limit requirements of GB/T39498-2020 "Guidelines for the Use and Control of Key Chemicals in Consumer Goods", and national standards have not specified the limit requirements for bisphenol A in thermal sensitive paper.

However, in order to better improve product quality and standards, Deli Group has stated that it has been conducting research work on technical breakthroughs and has made breakthroughs in recent years. Therefore, Deli Group has launched four bisphenol A free thermosensitive cash registers and will actively promote industry upgrading.

In this communication with Deli Group, we saw Deli Group's attitude towards improving product quality and its determination to promote the positive development of the thermal paper industry. We also hope that more thermal paper production enterprises can actively underground shelf thermal paper products with excessive bisphenol A content, and improve our thermal research and development technology to provide consumers with healthier non-toxic products. Let this action effectively and effectively solve the problem of excessive bisphenol A content in domestic thermal paper production, seek the welfare of consumers' health rights, and contribute to the non-toxic development of the thermal paper industry.

On the other hand, in order to make consumers more aware of the health risks and preventive measures of bisphenol A, Shenzhen Zero Waste and Non Toxic Pioneer, together with authoritative experts on the endocrine disruptor bisphenol A on April 22nd from 20:30 to 21:30, opened up another dimension of health exploration in life.