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What Do Plastic Recycling Symbols (1-7) Mean?

The numbers inside the triangle on the bottom of bottles and packages are actually a material code. We explain what plastic each number from 1 to 7 represents and why it matters.

What are these symbols for?

The number 1-7 inside the triangular arrow symbol is an international classification code (Resin Identification Code) that shows which plastic resin a product is made from. Recycling facilities use this code to separate different plastic types from one another — each plastic melts at a different temperature and requires different processing, so recycling quality drops if they are mixed.

What the numbers mean

1 — PET (Polyethylene Terephthalate): The most commonly used and one of the most recycled plastic types for water and beverage bottles.

2 — YYPE/HDPE (High-Density Polyethylene): Used in detergent and shampoo bottles and some bags. The YYPE grades in our catalog fall into this category.

3 — PVC (Polyvinyl Chloride): Used in pipes, cable insulation and some packaging films.

4 — AYPE/LDPE (Low-Density Polyethylene): Used in shopping bags, shrink film and flexible packaging. The AYPE grades in our catalog fall into this category.

5 — PP (Polypropylene): Used in yogurt cups, caps and many injection-molded parts. The PP grades in our catalog fall into this category.

6 — PS (Polystyrene): Used in single-use cups, foam packaging (styrofoam) and similar products.

7 — Other: Plastics that don't fall into the six categories above (polycarbonate, some bioplastics, mixed/multilayer packaging) are grouped here.

1

PET

Polyethylene Terephthalate

Water and beverage bottles

3

PVC

Polyvinyl Chloride

Pipes, cable insulation

6

PS

Polystyrene

Cups, foam packaging (styrofoam)

7

OTHER

Other plastics

Mixed/multilayer packaging

What this means for us

The PP, AYPE and YYPE raw materials we sell, once processed into a final product, are exactly the materials labeled with codes 5, 4 and 2 respectively. This coding matters so that the final product you manufacture is labeled correctly and consumers can sort it for recycling properly.

Related product group

See the related spec tables in our catalog.

Need product-specific technical data?

Our spec tables clearly show MFI, density and application info for every grade.

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