Hourglass HCE™ 3-Ply Cleanroom Face Masks w/ Ties | ISO 5, Case of 2,000
Hourglass HCE™ 3-Ply Cleanroom Face Masks w/ Ties | ISO 5, Case of 2,000
The Hourglass HCE™ 3-Ply Cleanroom Face Masks with Ties are ISO 5 / Clean Class 100 rated face masks designed for long-wearing comfort and a secure, adjustable fit in cleanroom and controlled environment applications. Constructed with a 3-ply ES/meltblown polypropylene (MBPP)/ES sandwich construction for enhanced filtration, four white SBPP tie straps, and a soft flexible nose piece. Manufactured and packed in a cleanroom environment, double bagged for contamination-controlled dispensing. Protects your cleanroom from human contaminants including skin flakes, cosmetics, bacteria, and other particles.
Sold in cases of 2,000 masks (50 masks/bag, 40 bags/case).
Specifications
| Property | Value |
|---|---|
| Construction | 3-ply: ES (PP/PE) / Meltblown PP (MBPP) / ES (PP/PE) |
| Filter Layer | Meltblown polypropylene (MBPP), 20 g/m² |
| Ply | 3-ply |
| Color | White |
| Band Type | Tie-on (4 ties) |
| Band Material | White SBPP |
| Nose Piece | Soft flexible plastic |
| APC (≥0.3µm) | 200 counts/piece |
| Cleanroom Class | ISO 5 | Clean Class 100 and higher |
| Packaging | Double bagged, 50 masks/bag, 40 bags/case |
| Manufacturing Environment | Manufactured and packed in a cleanroom |
Frequently Asked Questions
How does the 3-ply tie mask differ from the 2-ply earloop mask?
The 3-ply tie mask adds a meltblown polypropylene (MBPP) filtration layer between the two ES non-woven layers, providing enhanced particle filtration compared to the 2-ply earloop version. The tie-on straps also allow a more secure, adjustable fit around the head — preferred for longer wear periods or more critical contamination control requirements.
What is meltblown polypropylene and why does it matter?
Meltblown PP (MBPP) is a fine-fiber filtration layer produced by extruding molten polypropylene through tiny nozzles to create a dense, random fiber matrix. It is the key filtration layer in multi-ply face masks, providing significantly better particle capture than non-woven ES layers alone — the same technology used in N95 respirators.
What ISO cleanroom class are these masks rated for?
The HCE™ tie masks are rated for ISO 5 (Clean Class 100) and higher cleanroom environments, with an APC of 200 counts/piece at ≥0.3µm.
Why are these masks double bagged?
Double bagging allows the outer bag to be removed at the cleanroom entrance and the inner bag brought inside, minimizing particulate contamination introduced during dispensing — standard practice for ISO 5 cleanroom consumables.
