Clean Room Solutions

Tyvek®: Because it makes the difference!

Although protective suit types may look the same at first glance, but only from a distance. The unique DuPont ™ Tyvek material provides optimal protection when needed. That’s why Dupont has been a market leader in Europe for Type 4, 5 and 6 protective suits for 20 years.

Take any protective suit from the comprehensive Tyvek® product range in hand, for example the Tyvek® Classic Xpert and you will feel the difference. Tyvek® was developed by DuPont and is manufactured exclusively by DuPont. The unique and versatile material is extremely robust yet lightweight and soft. The material is permeable to air and water vapor, but at the same time resistant to water-based liquids and spray mist. It forms a highly effective barrier against fine particles and fibers. It is also low in fuzz and antistatic.

Tyvek® is a unique spunbonded fabric with an inherent protective barrier. It does not consist of individual films or layers that can wear off over time due to abrasion or wear – with Tyvek® protection is maintained throughout the wear period. Due to its optimal combination of protection, durability and comfort, Tyvek® protective clothing is suitable for a variety of different applications. Whether it’s painting, handling lead or asbest removal, its ergonomic design ensures a high level of protection and does not restrict wearers even in difficult working conditions. It is also free of fillers, additives and silicone.
(Source: Dupont.de)

Tyvek® IsoClean® Garments Vs. Reusable Garments in Cleanrooms

Tyvek (1:500) protective suit
Tyvek (1:500)
The fibers are thermally bonded to a strong, homogeneous and soft fabric that is breathable, does not give off any fibers (“lint-free”) and has inherent barrier properties, so it does not depend on coatings. This unique combination of barrier protection and inherent breathability makes Tyvek® an ideal fabric for a variety of protective applications.
(Source: Dupont)
Microporous film (MPF) protective suit
Microporous film (MPF) (1: 500)

MPF fabric is a bi-laminate material consisting of a thin microporous film and a spun-bonded polypropylene base. These fabrics offer limited durability as all barrier protection is lost when the protective film layer is abraded. In addition, this fabric has low air permeability properties and is, therefore, less breathable than other fabric types, resulting in limited comfort and heat control.
(Source: Dupont)

Spunbound / Meltblown / Spunbound (SMS) protective suit
Spunbound / Meltblown / Spunbound (SMS) (1:500)

The performance of SMS fabric is based on a meltblown polypropylene layer between two open polypropylene layers. The inner polypropylene layer acts as the main filter for particles. The weakness of SMS fabrics is the limited durability and relatively poor barrier performance due to the open fiber structure. In addition, the high air permeability properties significantly affect the barrier properties of the fabric, making SMS suitable only for very basic protection and as a dirt barrier.

Clean room: ISO classifications

Background: There has been a growing trend in recent years to move from the previously used classification system to the ISO classification systems of ISO 14644-1. However, many companies have continued to use the old US Federal Standard 209-e Class 100, 10,000, 100,000 clean room classification system. In Europe, another system with classes A to D is used in the context of GMP (Good Manufacturing Practice). The EU GMP Directives are stricter than others and require classrooms that comply with the number of particles in operation (during the manufacturing process) and at rest (when the manufacturing process is not performed, but the room air conditioner is on). Many international companies chose to use this classification system. These systems are all accepted for use. (Source: Dupont.de)

The ISO 14644-1 classification focuses on air purity and defines 9 classes for cleanrooms and cleanroom areas:

ISO Classification

0.1 μm

0.2 μm

0.3 μm

0.5 μm

1.0 μm

5.0 μm

SI

former FED-STD-209E

ISO-Class 1

10

2

ISO-Class 2

100

24

10

4

8

ISO-Class 3

1000

237

102

35

83

M 1.5

1

ISO-Class 4

10000

2370

1020

352

832

29

M 2.5

10

ISO-Class 5

100000

23700

10200

3520

8320

293

M 3.5

100

ISO-Class 6

1000000

237000

102000

35200

83200

2930

M 4.5

1000

ISO-Class 7

352000

832000

29300

M 5.5

10000

ISO-Class 8

3520000

8320000

293000

M 6.5

100000

ISO-Class 9

35200000

83200000

2930000

Classification table for maximum particle concentration for different particle sizes within the new purity classes.

The Class A-D system used in Europe under GMP is defined as follows:

Maximum permissible number of particles per m2

Hibernation

During Activity

Class

0.5µm

5.0 µm

0.5µm

5.0 µm

A

3’520

20

3’520

20

B

3’520

29

352’000

2’900

C

352’000

2’900

3’520’000

29’000

D

3’520’000

29’000

not defined

not defined

Frequently asked questions:

What kind of clothing do I need for my cleanroom class?

Clothing Class
Iso 14644 8 7 6 5
GMP D C A/B
Overall x x x
Full Covered Hood x x x
Boots x x
Mantel x
Hood x
T-Shirt x x x
Pants x x x x
Overshoes x x
Face mask x x
Gloves x x x x
Disposable Charlottes x x x x
Change Frequency 1-2 times / week 1-2 times / week 1 / day with every entrance

 

Which size clothing do I need?

The quality of a protective suit can only be exploited with the right size – which is why the right choice of size is highly relevant. We recommend the following sizes:

 

Width ( Breast)

cm 84-92 92-100 100-108 108-116 116-124 124-132
Size 162-170 S M L XL XXL XXXL
168-176 M M L XL XXL XXXL
174-182 L L L XL XXL XXXL
190-188 XL XL XL XL XXL XXXL
186-194 XXL XXL XXL XXL XXL XXXL
192-200 XXXL XXXL XXXL XXXL XXXL XXXL