PLASTIC RECYCLING SYMBOLS 2

[spaggioli]

Where may I find a complete list of recycling symbols to be added to plastic manufactured parts.

 

[BLN]

Try this website:

http://www.western-plastics.com/faq002.html

 

[spaggioli]

BLN
This was a help I also have a need for the symbols such as &quot;>POM<&quot; that sum of my customers ask for on their products. I dont know the origin or name of this type of marking but have been asked to use them. I would like more info on this type so I might catch a mistake before I engrave the tool with the wrong markings, this has happend in the past to me.

 

[BLN]

I think the referenced website covers all the recycling symbols. We require that any rubber part be marked to SAE J2332 (MARKING OF RUBBER PARTS), again this is for &quot;rubber&quot; products, not plastics. The >POM< that you call out is in the same format as SAE J2332, but I'm not familiar with POM. The SAE standard also references the following ISO standards:
ISO 1629—Rubber and Latices—Nomenclature
ISO 1043-1—Plastics—Symbols—Part 1: Basic polymers and their special characteristics
ISO 1043-2—Plastics—Symbols—Part 2: Fillers and reinforcing materials
ISO 11469—Plastics—Generic identification and marking of plastic products

ISO 1629 supposedly contains the standard symbols for terms relating to rubber.

 

Hi,

The <POM> format does refer to ISO 1043-1: 1987, &quot;Symbols for plastic and Rubber&quot;. (BS3502 in the UK)

Where the habit of using the greater than and less than signs came from I do not know, the standards don't call for them. I suspect it comes from the older DIN standard.

POM is Acetal. (Polyoxymethylene)

Regards,

Iain