Color Changing Hole Shoes Become Street Tide Products Consumers Cautious Formaldehyde

This summer, discoloration

Upgraded to street fashion, Shanzhai version goes hand in hand.

But do you know that this "one cent, one share" is not only reflected in quality, but also related to our health.

Reporter experiment found that the inferior shoes contain formaldehyde, and the content has reached the harmful standard.

Life observation

Cheap color changing shoes are pungent.

The color changing material is light and pparent.

However, the price of the genuine shoes is often around four hundred or five hundred yuan, while the price of the cottage shoes sold in the stalls and small markets is only around 1/10.

Recently, many citizens have reported that the hole shoes purchased can smell strong pungent taste, and they feel irritating when they wear bare feet.

The public doubted, "is it because of discoloration?

Toxic? "

Yang Dongzhi, an associate professor at Beijing University of Chemical Technology, said that the principle of this shoe discoloration is to add a small amount of photosensitive material, but sensitive materials generally do not produce a sense of irritation. The discomfort mentioned by consumers may be caused by formaldehyde in inferior plastics.

According to the analysis of the industry, the genuine shoes are processed by resin, and there is no stimulating taste. The counterfeit goods are made of inferior plastic which is recycled many times, and formaldehyde is added as the adhesive.

At the same time, the adhesive which is glued to the sole and shoe can also contain formaldehyde.

Experimental preparation

Reporters spent 45 yuan on the stalls to buy a pair of Shanzhai discolored cave shoes, will test soles,

The adhesive part of shoe sole and shoe upper is cut off, and the formaldehyde content is tested by liquid chromatography.

experimental result

Formaldehyde content in shoe parts (PPM)

Shoe upper 29.89

Sole 10.54

Bonding part 48.35

Conclusion: the shoes in the cottage do contain formaldehyde, and the content of the adhesive is the highest.

Analysis

This morning, the staff of the national footwear Standardization Technical Committee said that at present, there is no clear standard for this plastic shoemaking, and the formaldehyde content in other shoes is in accordance with clothing standards.

Gong Yan, School of materials, Beijing Institute Of Fashion Technology, told reporters that according to this standard, the highest formaldehyde content standard for infants and young children is 20ppm (MIL ratio), and the highest formaldehyde standard for clothing exposed to skin is 75ppm.

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But according to some latest research, it is harmful to approach 30ppm.

And formaldehyde in the air reaches 0.06PPM, which can also cause harm.

Formaldehyde hazard

In the morning, Professor Hao Fengtong, director of occupational diseases and poisoning in Chaoyang Hospital, said formaldehyde is a slow release gas and can be absorbed by human skin.

If toxins can not be excreted in time, they will have adverse effects on all organs of the body.

The clinical manifestations of inhaled formaldehyde are ocular mucosal and respiratory irritation, or contact dermatitis.

In particular, shoes and body clothing, which are long-term and human contact, are more likely to cause skin problems.

In addition, the carcinogenicity of formaldehyde is also recognized. It is suggested that the public should not be cheap enough to keep formaldehyde on their feet.

Especially children, the resistance is bad, so far away from these harmful tide shoes.