FIBC standards

Below you will find frequently used vocabu­lary to describe FIBC. Please contact us for additio­nal infor­ma­tion or questions. 

You can view our standard toleran­ces here:

FIBCs are mainly made from round woven or flat woven material. Our MONO and DUO-FLEX bags as well as FLEX 500 R are made from round woven PP, also known as tubular PP. 

One way to modify the surface of an FIBC is to coat the fabric webs, which results in more density and protec­tion of the fabric. Coating is achieved by applying a thin PP film to the surface of the sheets; the thickness of the coating is specified in GSM (g/​m2). Coatings protect the contents of the FIBC from air and moisture. It also prevents the contents from trickling out. 

The finer the grain size of the filling material, the larger its surface area and the associa­ted risk of electro­sta­tic charging when filling and unloading the big bag. The friction of the contents with the PP during these processes can lead to a risk of explosion if the FIBC is not handled properly. Dissi­pa­tive FIBCs avoid risk and potential accidents by dissi­pa­ting the electri­cal charge. Dissi­pa­tive FIBCs are available in catego­ries B-D. 

This unit describes the weight of yarn, measured in grams per 9,000 meters.

The grain size of the filling material is the guideline for choosing the right "dust protec­tion". Dust protec­tion prevents trickling, especi­ally in the seam areas. There are various standards for this, such as double and triple dust density. 

FIBCs used in the food and pharmaceu­ti­cal indus­tries must meet extremely high requi­re­ments in order to comply with the relevant laws and standards. There are several standards such as HACCP, ISO 22000, BRC, AIB etc. 

Each manufac­tu­rer is audited by us so that we can ensure that the manufac­tu­rer we have selected for a project not only has the necessary certi­fi­ca­tes, but also meets their speci­fi­ca­ti­ons in actual production.

The United Nations is the author of a so-called "Orange Book", which describes the handling of UN-certified goods. According to this book, FIBC are divided into different catego­ries, each of which has its own code (e.g. 13H2: FIBC, woven PP, coated), which contains infor­ma­tion on compo­si­tion, produc­tion, etc. 

The dimen­si­ons of an FIBC are usually given as internal or external dimensions. 

Due to the sewing and assembly of the fabric panels, these vary accordingly.

Despite various industry standards, FIBCs are generally custo­mi­zed products that are tailored to the specific needs of the customer. The options/​variants that make the big bag an indivi­dual product are manifold: e.g. filling and unloading spouts, gooseneck binding of these spouts, skirts, quick unloading devices, clips, tapes, prints, markings, etc. 

PE is a thermo­pla­s­tic polymer that is often found in plastic bags and other plastic products. For FIBC, PE is mainly used in the inner bags (see standards of inner bags). 

PP is a thermo­pla­s­tic polymer that is used to manufac­ture fabrics and threads from which FIBCs are made. The weight of PP fabric is given in grams per square meter (gsm = grams per square metre). 
The Safety Factor is a test reference that refers to the Safe Working Load of an FIBC. This is specified as: 5:1, 6:1, 8:1. SF 5:1 means, for example, that the big bag should reach five times its safe working load before it is allowed to burst. 
The SWL (Safe Working Load) speci­fi­ca­tion describes the recom­men­ded weight limit for an FIBC or one of its compon­ents. This infor­ma­tion is parti­cu­larly important for hazardous goods, as cracks and leaks must be prevented under all circumstances. 
Due to the proper­ties of the base material (polypro­py­lene), it is not recom­men­ded to store FIBC in the sun for longer periods without UV protec­tion. In order to keep the FIBC in sunlight for a limited time, it is advisable to add UV stabi­liza­tion so that the contents remain safely protected.