STYRON® 685D is a high heat crystal polystyrene grade. It offers toughness, gloss, stiffness, flow, cost, high tensile strength, blue tint and exhibits high heat resistance. Provides better color consistency, the ability to down-gauge and improved wall thickness distribution. Is suitable for processing by thermoforming, extrusion and injection molding. STYRON® 685D is designed for foam products like egg cartons, meat trays and clamshells, OPS and medical .Is a FDA 21 CFR 177.1640, UL94 HB E326906 and USP Class VI compliant grade.
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Compliance
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STYRON™ 685D properties
Hardness properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Hardness, Rockwell L | 0.0 Visible After Login | Visible After Login | Visible After Login |
Mechanical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Flexural Modulus | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Flexural Strength | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Impact Strength, Izod | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Modulus of Elasticity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Elongation | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Rupture | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tensile Strength | 0.0 Visible After Login | Visible After Login | Visible After Login |
Physical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Linear Mold Shrinkage | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Specific Gravity | 0.0 Visible After Login | Visible After Login | Visible After Login |
Thermal properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| CTE, Linear | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Heat Deflection Temperature (HDT) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Heat Deflection Temperature (HDT) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Vicat Softening Temperature | 0.0 Visible After Login | Visible After Login | Visible After Login |
STYRON™ 685D Processing Guidelines
Extrusion Processing Guidelines
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Adapter | Visible After Login | Visible After Login | |
| Die Temperature | Visible After Login | Visible After Login | |
| Head Pressure | Visible After Login | Visible After Login | |
| Melt Pump | Visible After Login | Visible After Login | |
| Melt Temperature | Visible After Login | Visible After Login | |
| Pipes | Visible After Login | Visible After Login | |
| Polishing Roll Temperature | Visible After Login | Visible After Login | |
| Screen Changer | Visible After Login | Visible After Login | |
| Screw Compression ratio | Visible After Login | Visible After Login | |
| Zone 1 Temperature | Visible After Login | Visible After Login | |
| Zone 2 Temperature | Visible After Login | Visible After Login | |
| Zone 3 Temperature | Visible After Login | Visible After Login | |
| Zone 4 Temperature | Visible After Login | Visible After Login | |
| Zone 5 Temperature | Visible After Login | Visible After Login | |
| Zone 6 Temperature | Visible After Login | Visible After Login | |
Injection Molding Processing Guidelines
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Back Pressure | Visible After Login | Visible After Login | |
| Mold Temperature | Visible After Login | Visible After Login | |
| Nozzle Temperature | Visible After Login | Visible After Login | |
| Zone 1 Temperature | Visible After Login | Visible After Login | |
| Zone 2 Temperature | Visible After Login | Visible After Login | |
| Zone 3 Temperature | Visible After Login | Visible After Login | |