Hello and welcome to a new post. In this blog post we have a closer look at the plastic part marking standards and their differences.
I made a short presentation about this topic which you can watch here:
Why Part Marking Codes?
Identification of plastics products is easier with a part
marking system. This allows for better decision making for:
- handling plastic products,
- better waste recovery
- more efficient disposal.
Overview of Marking Standards
There are three main standards; however there are additional
ones for each of the polymers.
ISO 11469:2016: Generic identification and marking of
plastics products
Example: acrylonitrile-butadiene-styrene polymer “>ABS<”
ASTM D7611: Resin Identification Codes (RICs) consisting
out of a equilateral triangle, Resin Identification Number, and abbreviated term
for polymeric material.
Example:
ISO 1043, ISO 1629 (rubber), ISO 18064 (TPE): Plastics –
Symbols and abbreviated terms:
Part 1:
Basic polymers and their special characteristics
Part 2:
Fillers and reinforcing materials
 |
| ISO 1043 - Part 2: Fillers and reinforcing materials (material) |
 |
| ISO 1043 - Part 2: Fillers and reinforcing materials (form) |
Part 3:
Plasticizers
 |
| ISO 1043 - Part 3: Plasticizers |
Part 4: Flame Retardants
The tables below show an overview of the most common flame retardant classes, as well as the detailed codes. We can distinguish between halogen compounds, nitrogen compounds, halogen-free organophosphorus compounds,inorganic phosphorus compounds, metal oxides, Boron and zinc compounds, silicon compounds, and graphite.
 |
| ISO 1043- Part 4: overview of the most common flame retardant classes |
 |
| ISO 1043 - Part 4: Flame retardant codes |
Example:
Summary of standards:
Check out my post on flame retardant classifications according DIN EN ISO 1043-4 here.
Thanks for reading and #findoutaboutplastics
Herwig
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