Transparent OPS Sheet
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Transparent Biaxial Oriented Polystyrene Sheet (Abbr. Transparent OPS Sheet )(not including anti-fog OPS sheet)
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Application: packaging for snack, cake, salad, sauce, sushi and other food; lids; collar band etc.
Transparent OPS sheet is made from granular material, which is longitudinally and transversally stretched after melted and extruded out from the extruder. After biaxial extension, OPS sheet has the thickness uniformity, rigidity and transparency and other physical properties that have not been found in cast PS sheet. These properties improve its processability and application performance. OPS sheet will be more attractive after being metalized and coated.
| Specification | |
| Range of the sheet thickness | 100 to 750 um |
| Range of Roll width | 330 to 1500mm（＜3300mm） |
| Coating | no coating/one side silicone/double sides silicone |
| Size of roll core | 3 inches(7.62cm), 6 inches(15.24cm) |
| Common Diameter of Roll | 38cm(carton)/56cm/68cm(horizontal)/72cm/75cm/100cm |
| Common size of Pallet | 1120*1120mm/1450*750mm/725*725mm/1400*1130mm |
| Type of pallet | Can be lifted on single /double/all side(s) |
| Product properties | |||
| parameter | unit | value | testing method |
| Basic property | |||
| Density | g/cm³ | 1.05 | D1505 |
| tolerance of Thickness | % | ±5 | |
| tolerance of width | mm | 0 to +2 | |
| О2 permeability | cm³/(m²•d•atm•mm) | 120-180 | D 3985 |
| СО2 permeability | cm³/(m²•d•atm•mm) | 300-800 | D 1434 |
| Light permeability | % | 92 | D1003 |
| Moisture permeability | g/(m²•d•mm) | 2-10 | D 1435 |
| Transparency | % | 96 | D 1003 |
| Haze | % | ≤2.0 | D 1003 |
| Gloss | gloss unit | 115 | D 2457 |
| Application temperature | ℃ | –20 to +80 | |
| Self Life | Month | 24 | |
| Mechanical property | |||
| Tensile strength(-MD/-TD) | MPa | ≥55 | D 882 |
| Elongation at break (-MD/-TD) | % | ≥3 | D 882 |
| Shrink Tension | PSI | 0.6-1.5 | D 2838 |
| Hardness Rockwell M | 85 | D 785 | |
| Minimum modulus of elasticity(-MD/-TD) | MPa | 2200 | D 882 |
| Thermal properties | |||
| Continuous Heat Resistance | ℃ | 79 | |
| Thermal Conductivity | Cal/sec/cm2/℃/cm | 20x104 | C 177 |
| Thermal Expansion | In/in/℃ | 6.8x105 | D 696 |
| Heat Sealing Range | ℃ | 121-177 | |
| Flammability | inflammable | ||
| Shrinkage temperature | ℃ | >+95 | |
| Chemical Properties | |||
| Strong Acids | Great(except oxidizing acids) | D 543 | |
| Strong Alkalies | great | D 543 | |
| Alcohols | good | D 543 | |
| Fat，Cheese&oil | good | D 543 | |
