Summary: Polyester is a synthetic petroleum-...
Polyester is a synthetic petroleum-based fiber. Monofilament or continuous polyester cleanroom wipes are the cleanest wiping materials available. The monofilament construction ensures that the material is very strong and durable. Naturally, polyesters absorb solvents but not aqueous solutions; surface treatments are often used to improve sorbent performance. Washed polyester knitted cleanroom wipes are washed with 0.45 micron ultra-filtered water before being dehumidified by HEPA filtration. Packed and sealed under an ISO class 4 laminar flow station, in airtight (air-tight) packaging, ensuring cleanliness and traceability before final inspection. Cleanroom processing and washing ensures low particle shedding, consistent quality and good results in class 3-5 cleanrooms. The wipes also do not shrink or change shape.
Compatibility with cleaning solvents such as IPA and autoclave-ready temperature ratings enables use in the most critical cleanroom environments. Double-knit monofilament polyester creates an ultra-soft fabric that improves durability and particle retention. The material is knitted and interwoven twice in a cross pattern for the strongest results. Double knit creates a cross-hatch texture that increases surface area and traps more particles than traditional polyester knit wipes. The tightly woven design reduces surface capture, unraveling and breakage of particle-producing yarn filaments. Mixtures of cellulose and polyester may vary due to the need for absorbance rather than less fluff. Cellulose is more absorbent, while polyester has less lint. Polycellulose Hybrid Wipes are one of the most popular cleanroom wipes for general wiping and spill control in ISO Class 6 and above cleanrooms.
Biodegradable and naturally ESD friendly polycellulose offers one of the most economical cleanroom wiper options due to its ease of production and processing. Price, chemical resistance and high absorbency are its most desirable properties. A nonwoven fabric is broadly defined as a sheet or web-like structure in which fibers or filaments (or through a perforated film) are entangled together mechanically, thermally, or chemically. Post-processing and unique structural properties provide some potentially beneficial results, such as porosity to achieve gas sterilization. Non-woven wipes offer an economical option because no laundering is required during the manufacturing process. Cellulose and synthetic blends provide additional absorbent capacity for spill cleanup and viscous liquid removal. Typically, non-woven wipes are used in cleanrooms with a cleanliness level of no less than ISO class 6 or higher.
Cleanroom dry wipes material
vary by application, cleanliness, material and basic characteristics. This article addresses cleanroom and industrial requirements such as ISO ratings, procedures, protocols, ESD safety features, and manufacturing use cases. Cleanroom wipes have historically been the most effective and commonly used tool for removing contaminants, particulates and residual materials in critical manufacturing and pharmaceutical compounding environments. Highly absorbent, low-lint materials provide tight control of moisture, solvents and spills for cleaning cleanroom surfaces, walls, machinery, fixtures, haulers, tools and other production materials.