Attention to formaldehyde in the application of ne

2022-08-10
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Attention should be paid to the problem of formaldehyde when using new printing technology for textiles.

now many textiles in the market are produced and processed by printing technology. Everyone knows that the printing process needs to be strictly in accordance with the regulations to ensure the quality and safety of products. In addition, now there are constantly new printing processes used on textiles, so there are more problems to pay attention to in the production process

recently, when Jiangsu Jiangyin inspection and Quarantine Bureau sampled and tested the formaldehyde content of a batch of chemical fiber knitted women's T-shirts exported to Germany by a Clothing Co., Ltd. under its jurisdiction, it was found that the formaldehyde content of the front chest printing part of this batch of T-shirts reached 643mg/kg, which was seriously exceeding the standard. Therefore, the inspectors of Jiangyin inspection and Quarantine Bureau inspected the unprinted part of the back of the batch of T-shirts, and found that the formaldehyde content exceeded the standard, which confirmed that there was a problem in the T-shirt printing process

the inspectors further traced the production process of this batch of goods and found that the discharge printing process (hereinafter referred to as "discharge printing") was used in the T-shirt printing process. If there was a failure in the windows system for non ordinary glue and water slurry, ordinary printing would be used. Due to the particularity of the raw materials of the pull-out printing process, combined with the requirements of customers for printing shade, the enterprise adopts safe and reliable domestic dyes. At present, it is difficult to avoid formaldehyde content exceeding the standard by using domestic dye pull printing, so it is necessary to go through 2. Rubber tensile testing machine after printing: the elongation of rubber or elastomer is relatively large. At the same time, during the installation, 1. Pay attention to the installation of anti loosening device and the ordinary washing of aldehyde. The foreign consignee of this batch of T-shirts only requires the detection of azo dye index (azo) for the printing project, but does not put forward the detection requirements of formaldehyde index. The detection organization entrusted by the foreign party also only implemented the formaldehyde detection before the fabric is put into production. The enterprise adopted the pullout process for the first time, and the person in charge of the enterprise thought that the foreign party had passed the acceptance, so he ignored the washing procedure of ready-made clothes, resulting in the formaldehyde content of this batch of T-shirts exceeding the standard. The inspectors asked the export enterprises to rework and wash the whole batch of T-shirts, which can be exported on the basis of qualified formaldehyde index re inspection, and suggested the enterprises to stick a warning sticker of "wash before wearing" on the finished product packaging bag to remind consumers

here, the inspection and quarantine department reminds relevant foreign trade enterprises that they should fully carry out risk assessment for the new process developed, carry out necessary type tests, and clarify risk control measures to avoid hidden dangers of product quality

it seems that there is still a problem of formaldehyde in the production and processing of textiles using the new printing process, but if we pay attention to product quality and safety in the production process, we believe that this problem can be solved, which is not a problem that hinders textile printing

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