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Cleanroom Wiping Paper: Standards & Guidelines

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1. Product Introduction
Cleanroom wiping paper is a high-performance cleaning consumable specially designed for clean environments. It is widely used in electronics manufacturing, optical instruments, medical devices, precision machinery, and other fields with strict dust-free requirements. Its core function is to efficiently remove surface contaminants while preventing fiber shedding or secondary contamination, thus ensuring the cleanliness of the production environment and product yield.

2. Material and Process Standards

  • Material Composition:
    The wiping paper adopts a nonwoven composite structure made of 45% polyester and 55% wood pulp fibers.

  • Polyester fibers: Provide high strength, chemical resistance, wear resistance, and tear resistance, reducing fiber shedding during wiping.

  • Wood pulp fibers: Enhance liquid absorption and softness, improving the adsorption of fine particles.

  • Basis Weight (GSM):
    The unit weight ranges between 56-68 g/m², classified by application scenarios:

    • Standard type (56-60 g/m²): General wiping for routine cleaning.

    • Enhanced type (61-68 g/m²): For high absorption needs or heavily contaminated scenarios.

3. Physical Performance Requirements

Test Item Test Standard Qualification Criteria
Tensile Strength (MD) GB/T 24218.3 Must meet customer requirements
Absorption Rate (DI Water) GB/T 24218.6 Must meet customer requirements
Fiber Shedding IEST-RP-CC004.3 Must meet customer requirements
Abrasion Resistance (Dry) ASTM D3886 Must meet customer requirements

4. Chemical Cleanliness Standards
Cleanroom wiping paper is generally produced in Class 10,000 cleanrooms and is not washable. It is suitable for lower cleanliness or peripheral cleanroom use. For environments requiring Class 10,000 or better cleanliness, cleanroom wipes are recommended, which can meet up to Class 10 cleanliness.

5. Packaging and Labeling Specifications

  • Packaging Formats:

    • Roll form: Also called jumbo roll wiping paper, with 500 sheets per roll, convenient for pull-out use.

    • Bagged form: Also known as 0609 wiping paper, individually sealed packages containing 150-1200 sheets depending on size.

  • Color Coding:
    White, blue, and green are common colors. In electronics, white is more widely used, while blue and green are more common in industrial wiping scenarios. In China, white is predominant, whereas blue and green are more popular in Europe and America.

6. Testing and Certification
Customers can request RoHS certification and TDS (Technical Data Sheet) reports from suppliers to ensure compliance.

7. Application Guidelines

  • Electronics Industry:
    Recommended use with IPA solvent for wiping PCB boards; single sheet single-direction wiping is advised.

  • Optical Field:
    Prefer blue-colored microfiber laminated products to avoid scratching coated surfaces.

  • Medical Sterilization:
    Compatibility verification with EO/γ-ray sterilization is required; packaging materials must comply with YY/T 0698.2.

Summary:
Standardized production and scientific selection of industrial cleanroom wiping paper are crucial to maintaining modern industrial cleanliness. Users are advised to choose wiping papers based on actual scenario requirements, considering material properties, cleanliness level, and packaging formats, while regularly verifying suppliers’ test reports and compliance documentation.

Premium Cleanroom Wipes: Key Requirements Guide

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In industries with extremely high cleanliness requirements such as electronics optics, semiconductor manufacturing, and biopharmaceuticals, cleanroom wipes are essential consumables that ensure process stability and product quality. A high-quality cleanroom wipe must not only have excellent cleaning efficiency but also meet strict physical, chemical, and biological standards. This article analyzes the seven core performance parameters that high-quality cleanroom wipes should satisfy, helping enterprises make precise selections to improve cleanroom process stability and product yield.

1. Strict Control of Particle Shedding
Particle shedding during use directly affects the cleanliness level.

  • Visible Particles: The wipe should not shed visible fibers or particles to avoid scratching or secondary contamination. High-density weaving and laser or ultrasonic sealing reduce fiber breakage risk.

  • Submicron Particles: The release of submicron particles must be measured by laser particle counters and comply with ISO 14644-1 standards. Using ultrafine fibers combined with multiple rounds of ultrapure water cleaning improves cleanliness.

2. Fiber Shedding Suppression
Fiber residue is a major concern affecting wiping effectiveness and equipment safety.

  • Use nonwoven fabrics or woven fabrics sealed by laser cutting or ultrasonic welding.

  • Comply with IEST-RP-CC004.3 fiber release testing to ensure particle emissions meet strict criteria.

3. Extremely Low Chemical Residue
High cleanliness applications are sensitive to chemical contamination and require strict control of ions and non-volatile residues (NVR).

  • Ion Contamination: Tested per IPC TM-650 2.3.28 to ensure no soluble ionic contamination.

  • Non-Volatile Residues: Use ultrapure water cleaning and solvent-free manufacturing to prevent organic or inorganic deposits that may corrode equipment or affect chemical reactions.

4. Biological Load Control
Especially in pharmaceutical and biological labs, wipes must meet sterile or low microbial load standards.

  • Sterilization treatments reduce microbial counts.

  • Packaging with double clean bags or vacuum sealing prevents contamination during transport and storage.

5. Anti-Static Performance
Electrostatic discharge (ESD) can damage sensitive electronic components; high-quality wipes need stable anti-static properties.

  • Surface resistivity should range between 10⁵ to 10⁹ ohms, complying with ANSI/ESD S20.20 standards.

  • Permanent anti-static additives such as carbon fibers or conductive threads are preferred over temporary coatings.

6. Clean Packaging and Traceability

  • Class 100 wipes must be packaged in Class 100 cleanrooms to avoid external contamination.

  • Provide detailed batch test reports including particle counts, ion content, and microbial data, meeting ISO 9001 quality management requirements.

Summary
High-quality cleanroom wipes are vital guardians of precision manufacturing and R&D, with performance spanning material selection, manufacturing processes, stringent testing, and clean packaging. When selecting wipes, users should consider specific application requirements, reference industry standards, and verify through third-party testing to ensure optimal particle shedding, chemical contamination, biological safety, electrostatic control, and traceability. Only wipes that balance these multidimensional performance factors can truly act as the “invisible protectors” of clean environments, helping enterprises continuously enhance product quality and process stability.