Myths and Truth About CROHMIQ

Myth: Some materials dissipate static electricity faster than CROHMIQ.
Truth: Rate of dissipation is not a determinant of the effectiveness of static protection. CROHMIQ fabric is designed to dissipate static electricity in a controlled manner to avoid hazardous discharges. The true measure of a Type D fabric is its ability to dissipate electrostatic charge safely without being grounded and without igniting flammable powders or solvents. For CROHMIQ this is not only proven by extensive independent testing according to the latest and most rigorous international standards, but also by the long history of safety provided by CROHMIQ in industry's most challenging environments. In over 15 years since its invention, CROHMIQ fabric has been used in packaging over 50 billion pounds of chemicals without any incident of fire or explosion.

Myth: D+ or CD bags are better than CROHMIQ because they can be used as Type C or Type D.
Truth: In order to dissipate static electricity at a safe rate, Type C FIBC must have a resistance to ground of less than 108 ohm (updated to less than 107 ohm in IEC 61340-4-4 Ed. 2.0: 2012). This has always been the performance characteristic that defines Type C FIBC and it is written into national and international standards. Plants that use Type C often have interlock systems on their bag stations that prevent the contents emptying unless a proper ground connection is in place with a resistance less than 108 ohm (updated to less than 107 ohm in IEC 61340-4-4 Ed. 2.0: 2012). All D+ or CD products have a resistance much higher than 108 ohm. They cannot be used on interlocked systems and do not provide the safety of true Type C FIBC. Manufacturers of D+ and CD bags specify that their bags should be grounded to eliminate the risk of causing explosions. If bags need to be grounded to be safe they are not true Type D FIBC. Unlike CROHMIQ FIBC, D+ and CD bags do not provide full safety when ungrounded and do not meet the requirements for Type C when grounded. It is, therefore, clear that D+ and CD bags are inferior to CROHMIQ FIBC and true Type C FIBC. This is why international standards written by leading safety experts do not recognize D+ or CD bags as being safe. In fact, the latest edition of IEC 61340-4-4 now prohibits FIBC from being labelled as D+ or CD, etc.

Myth: It is a mistake to ground CROHMIQ FIBC.
Truth: CROHMIQ FIBC are designed and engineered to be safe without the need for a ground connection. However, there is no hazard if a ground connection is made to a CROHMIQ FIBC.

Myth: CROHMIQ fabric has a special antistatic coating and will not function safely uncoated.
Truth: CROHMIQ fabric has a regular polypropylene/polyethylene coating. The static protective properties of CROHMIQ are inherent to the base fabric and both coated and uncoated fabric provides equal static protection. Coated CROHMIQ fabric is used in applications requiring the functional barrier that a coating provides. Uncoated CROHMIQ fabric is used in applications that require a "breathable" FIBC or where a liner is used inside the FIBC.

Myth: CROHMIQ is not FDA approved.
Truth: CROHMIQ fabrics comply with the US Food, Drug & Cosmetic Acts, and the EU Material & Articles in Contact with Food Regulations. Independent analysis of the component materials used in the construction of CROHMIQ fabric has concluded that:

  • the extruded coating of CROHMIQ fabric provides a functional food contact barrier against adulteration from outside agents;
  • under FDA regulations the component materials of the CROHMIQ extruded coating and base fabric are either GRAS (generally recognized as safe) or within the relevant specifications;
  • under EU regulations, none of the component materials used in the construction of CROHMIQ fabric (including the extruded coating) is on the positive list - i.e. all component materials in CROHMIQ fabric are permitted for food contact.

Myth: CROHMIQ fabric contains solid metal filaments.
Truth: CROHMIQ does not contain any metal filaments. The special static dissipative yarns woven into CROHMIQ fabric are mainly polypropylene with a small percentage of carbon.

Myth: TEXENE recognizes other companies using similar technology to CROHMIQ as being legitimate competition.
Truth: TEXENE does not recognize the legitimacy of any product that infringes upon TEXENE patents and will vigorously enforce its intellectual property rights against others who violate its U.S. and foreign patents.

MYTH: If you own a patent, it gives you the right to use make, use and sell the product or method covered by your patent.
TRUTH: Not necessarily. Owning patent does not necessarily allow an infringer to avoid violating TEXENE patents. A patent only gives you the right to exclude others. Whether you can practice the invention described in your own patent depends upon the existence of patents owned by others. Example: Company A invents the "pencil" and obtains a patent. Later, Company B decides to put an eraser on the end of the pencil and obtains a patent on the combination. But the pencil/eraser combination sold by Company B is still a pencil and its manufacture and sale would violate the original pencil patent owned by Company A.

Myth:CROHMIQ is only available in the USA.
Truth: CROHMIQ is available worldwide and CROHMIQ FIBC are manufactured in every Continent where FIBC manufacturers and ultimate end users are located.

TEXENE LLC, Textile Technologies of the 21st Century
Textile Technologies of the 21st Century


TEXENE LLC is a leading manufacturer of technical textiles focused on delivering precision engineered, safety performance products worldwide.

ARTICLES ON ELECTROSTATICS

STATIC HAZARDS USING FLEXIBLE INTERMEDIATE BULK CONTAINERS FOR POWDER HANDLING
In the early 1990's, Dr Laurence G. Britton, a highly respected process safety engineer with Union Carbide Corp. (later Dow Corp.), conducted a study of fire and explosion incidents that occurred when FIBC were ...

DANGERS OF COMBUSTIBLE DUST EXPLOSIONS, OSHA REGULATIONS, AND ANTISTATIC FIBC
Following three fatal dust explosions in 2003 alone, the US Chemical Safety & Hazard Investigation Board (CSB) launched a wide ranging study of industrial dust explosions.  This first issue of our Electrostatic Safety ...

CHOOSING SAFE STATIC CONTROL FIBC
The second issue of our Electrostatic Safety Review outlines the development of conductive Type C FIBC and the later development of CROHMIQ, the world's first truly effective Type D FIBC fabric, which provides ...

TESTING & CERTIFYING THE SAFETY OF STATIC PROTECTIVE FIBC
The third issue in our series of Electrostatic Safety Reviews describes the rigorous testing that is demanded by national and international standards such (IEC, CENELEC, NFPA, etc.) in order to prove the safety of ...

NEW DEVELOPMENTS IN SAFETY STANDARDS FOR STATIC PROTECTIVE FIBC
Companies that handle combustible powders in bulk bags, or empty products from bulk bags in environments where flammable solvents may be present rely on safe antistatic FIBC to prevent fires and explosions. Proving safety ...

CHEMICAL ACCIDENTS IN THE NEWS

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