Standard for Compressed Air for Bottle Blowing in Cosmetic Enterprises

Technical Notes on Compressed Air Quality Standard for Bottle Blowing Process in Cosmetic Enterprises

the bottle blowing process of cosmetics enterprises has strict technical requirements for the quality of compressed air and must meet a number of international and national standards. After systematically sorting out the relevant specifications, the key technical indicators and management requirements are described as follows:

1. Core Quality Standards

1. cleanliness index

• solid particles: to meet ISO 8573-1 Class 2 standard, I .e. particle size ≤ 1.0 μm, concentration ≤ 1.0 mg/m & sup3;. Detected by laser particle counter to ensure that there is no visible contamination on the surface of the bottle body
• microbial control: microbial limit ≤ 1CFU/m & sup3;, need to configure sterilization filter and regularly carry out microbial sampling and detection
• oil-free requirements: total oil content ≤ 0.01 mg/m & sup3;(ISO 8573-1 Class 1), detected by infrared spectroscopy to prevent oil migration to cosmetic contents

2. humidity control

• pressure dew point ≤-40 ℃(ISO 8573-1 Class 2), use cold mirror dew point meter to detect, avoid condensation on the surface of the bottle
• relative humidity control: maintain 30-50% RH ambient humidity in the air compressor room and configure intelligent temperature and humidity control system

3. pressure stability

• gas supply pressure fluctuation ≤ ± 0.02MPa, equipped with precision pressure reducing valve and pressure buffer tank
• key station configuration pressure sensor, real-time monitoring data access to the central control system

2. inspection verification requirements

1. daily inspection

• oil content: daily use portable oil detector sampling, record data and draw trend chart
• dew point temperature: test before starting up each shift, using calibrated digital dew point meter
• particulate matter: conduct weekly sampling and testing at the end of the pipeline to establish a particulate matter distribution map

2. periodic verification

• microbiological detection: monthly compressed air sampling culture, using R2A nutrient agar medium
• system verification: Every year, a third-party testing agency is entrusted to carry out all-item testing and issue a CMA certification report.
• Filter leak detection: DOP/PAO leak detection test every six months to ensure filtration efficiency ≥ 99.999%

3. System Configuration Specification

1. purification equipment selection

• pre-filtration: equipped with F8 bag filter, filtration efficiency ≥ 95% @ 1μm
• fine filtration: H13 HEPA filter with filtration efficiency ≥ 99.95 @ 0.3μm
• oil removal device: equipped with activated carbon adsorption tower, adsorption efficiency ≥ 99% @ 0.01μm oil vapor

2. drying System Requirements

• freeze dryer: outlet pressure dew point ≤ +3 ℃, suitable for general working conditions
• adsorption dryer: equipped with double tower regeneration system, outlet pressure dew point ≤-70 ℃
• intelligent switching device: automatically select the drying mode according to the ambient temperature, and the energy efficiency ratio is increased by 25%

4. special process requirements

1. high-speed bottle blowing line

• air supply pressure: 0.6-0.8MPa adjustable, equipped with variable frequency drive air compressor unit
• instantaneous flow: to meet the maximum capacity demand, equipped with 20% flow reserve gas tank
• response time: pressure recovery time ≤ 0.5 seconds, equipped with fast opening and closing solenoid valve

2. special material packaging

• PET bottle production: equipped with special drying unit, dew point ≤-50 ℃
• glass bottle filling: increase the terminal filtration accuracy to 0.01 μm to prevent glass debris contamination
• hose filling: equipped with nitrogen protection system, oxygen content ≤ 1% to prevent oxidation of the contents

5. operation and maintenance management specification

1. routine maintenance

• filter replacement: replace as indicated by differential pressure gauge, maximum differential pressure ≤ 0.2MPa
• regeneration of desiccant: deep regeneration every 4000 hours, replacement cycle ≤ 3 years
• pipeline disinfection: monthly ozone pulse disinfection, concentration ≥ 5ppm for 2 hours

2. emergency Management

• standby unit: configure N +1 redundant system, single machine failover time ≤ 30 seconds
• emergency plan: formulate compressed air interruption response process, and configure air storage tanks at key stations.
• Training system: operators need to pass the ISO 8573 standard training assessment, certified

it is suggested that cosmetics enterprises should establish a compressed air quality management system (CAQMS) and include the air supply system into the scope of process verification. For new construction or renovation projects, CFD fluid simulation analysis should be carried out to optimize the pipe network layout. During the system acceptance, the tracking verification of 3 complete production batches shall be completed to ensure the qualified rate of bottle blowing ≥ 99.95. Conduct regular gas supply system audits and recommend a comprehensive energy efficiency assessment every two years to continuously optimize operating parameters.