Introduction to Cleanroom Gloves: Characteristics, Processes, and Application Scenarios
Aug. 29, 2023

1. Characteristics of Cleanroom Gloves

KINGFA cleanroom gloves ensure that contaminants are transferred to the processed or manufactured products or components in a clean environment to the minimal extent. These contaminants are typically present on the hands of the operators. Therefore, cleanroom gloves are necessary. However, the surface of these gloves needs to have minimal levels of contaminants. In the cleanroom industry, these parameters are known as particle count, ion content, total non-volatile residues (TNVR), as well as silicone, amine, or DOP content. KINGFA cleanroom gloves are designed to meet customers' cleanroom requirements based on these critical environmental factors.

2. Processing Flow of Cleanroom Gloves

2.1 Glove Forming Preparation

Hand molds are sequentially soaked in acid, water, alkali solution, and scrubbed with 16 sets of nylon brushes to thoroughly clean any impurities remaining on the molds.

2.2 Immersion Forming and Vulcanization

The surface of the hand molds is evenly immersed in a mixture of coagulant, followed by two immersions in the prepared latex, forming a film. Afterward, the gloves are subjected to high-temperature vulcanization, with excess soluble harmful substances and particles removed through hot drainage.

2.3 Chlorination

After high-temperature vulcanization in a drying oven, the gloves are cooled through four cooling tanks. They are then treated with chlorine water at a concentration of 300-600 ppm online to ensure comfortable wearability. After five online treatments, the gloves are drained to ensure a clean surface.

2.4 Secondary Chlorination

After demolding, the gloves are inverted from the inside out, and the external surface needs a second offline chlorination to ensure smoothness and cleanliness.

2.5 Glove Testing

Various tests are conducted, including pinhole, appearance, mechanical performance, and monitoring of each tank condition. If the results are below the AQL value, production is immediately stopped. Tests include water leak resistance (ASTM D5151), physical performance (ASTM D412), and powder residue (ASTM D6124).

2.6 Cleanroom Processing

After chlorination, the gloves are transferred from the cleanroom to a stainless steel washer. They are washed multiple times in filtered double deionized water down to 0.2 micrometers using ultraviolet treatment. The gloves are then removed from the washer on the cleanroom side and placed in a dryer, where they are dried with high-quality HEPA-filtered air. Once dry, the gloves are taken into our own ISO 4 or 5 cleanroom for packaging.

3. Application Scenarios

Cleanroom gloves are widely used in critical environments in the electronics, hard disk drive, semiconductor, and storage media industries. They are also used in industries such as TFT, LCD, optics, nanotechnology, and biomedicine.

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