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PACKAGING Packaging Cyclic Olefin Copolymer (COC) PACKAGING Packaging www.topas.com TOPAS Advanced Polymers TOPAS Advanced Polymers manufactures and Germany, it operates a U.S. subsidiary in Florence, markets TOPAS® COC (cyclic olefin copolymer) Kentucky, USA, and a 30,000 metric ton per year for advanced packaging, medical, optical and other plant, the world’s largest, in Oberhausen, Germany. applications worldwide. The company is a joint TOPAS Advanced Polymers was launched January 1, venture of Daicel Chemical Industries Ltd., and 2006 following the purchase of the TOPAS business Polyplastics Co., Ltd. Headquartered in Frankfurt, from Ticona, a subsidiary of Celanese Corporation. Important The properties of articles can be affected by a variety of factors, values given in this literature are for reference purposes only including choice of material, additives, part design, processing and not for use in product design. Without exception, please conditions, and exposure to the environment. Customers should follow the information and other procedures explained in this take responsibility as to the suitability of a particular material literature. This literature does not guarantee specific properties for or part design for a specific application. In addition, before our company’s products. Please take the responsibility to verify commercializing a product that incorporates TOPAS, customers intellectual property rights of third parties. should take the responsibility of carrying out performance evaluations. Our company’s products are not intended for use in medical and dental implants. Unless specified, the numerical Published in April 2011 2 Cyclic Olefin Copolymer (COC) Contents 1. Introduction 4 2. Product portfolio 6 Introduction 1 3. Product performance 6 3.1 Physical properties 6 3.1.1 Mechanical properties of blends 8 3.1.2 Thermal properties 8 Product portfolio 2 3.1.3 Rheology 9 3.1.4 Optical properties 10 3.1.5 Barrier properties 10 3.1.6 Deadfold 11 3.1.7 Coefficient of friction 11 Product performance 3 3.2 Chemical resistance 12 3.3 Regulatory 13 3.4 Recycling 13 4. Processing 14 Processing 4 4.1 Drying 14 4.2 Cast film extrusion of TOPAS/PE blends 14 4.3 Cast film extrusion of discrete TOPAS layers 14 4.4 Blown film extrusion 15 4.5 Extrusion coating 16 Secondary operations 5 4.6 Additves 16 4.7 Purge and shutdown 16 4.8 Troubleshooting 17 5. Secondary operations 18 TOPAS applications 6 5.1 Thermoforming films and sheet 18 5.1.1 Multilayer films 18 5.1.2 Monolayer blends 19 5.2 Orientation and shrinkage 19 5.3 Sealing 20 Subject index 7 5.4 Sterilization 20 5.5 Vacuum metallizing 21 5.6 Printing 22 5.7 Electrical properties 22 6. TOPAS applications 22 Figure and table index 8 6.1 Food 23 6.2 Healthcare 24 6.3 Consumer 25 7. Subject index 28 Conversion table 9 8. Figure and table index 29 9. Conversion table 30 3 Packaging www.topas.com 1. Introduction TOPAS COC (cyclic olefin copolymer) TOPAS is an amorphous, transparent copolymer based on the polymerization of ethylene and nor- bornene using metallocene catalysts. Its property CH2 CH2 CH CH profile can be varied over a wide range by adjusting X the chemical structure during polymerization. These Y new materials exhibit a unique combination of properties whose performance benefits include: } High transparency and gloss } Excellent moisture and aroma barrier } Variable glass transition temperatures from 65°C up to 178°C } High stiffness and strength } Easy to extrude and thermoform } Compatibility with polyolefins } Excellent biocompatibility and inertness } Resists hydrolysis, polar organics, acids and alkalis 4 Cyclic Olefin Copolymer (COC) Broad use in packaging These characteristics have made TOPAS a widely tool in the packaging engineer’s toolbox. It is used accepted packaging material that enhances packaging as a blending component for other polyolefins to 1 performance over a broad range of applications. enhance performance and as a discrete layer in TOPAS opens new opportunities by adding a new coextruded multilayer films. Table 1: TOPAS packaging applications Forming webs } improved forming window and uniformity Soft shrink film } tough, stiff, soft shrink, halogen-free, polyolefin Shrink sleeves and labels } high shrinkage and stiffness with low shrink force non-migrating for reduced ambient and hot COF Slip additive } in polyolefin film additional stiffness, improved seal strength Sealant films } and hot tack Twist wrap } high end clarity and gloss, excellent deadfold increased stiffness at room temperature and under Bags/pouches } hot-fill conditions, easy tear, retort performance Medical trays } high moisture barrier, deep draw, clarity Paperboard coating } increased moisture barrier, reduced curl reduced warping and camber, increased opening Zipper closures } force Blister packs } high moisture barrier, deep draw, halogen-free 5 Packaging www.topas.com 2. Product portfolio TOPAS is a high purity, colorless, transparent polymer heat deflection temperature (HDT/B), i.e., those with often processed by extrusion. TOPAS F-series grades higher norbornene content have higher heat resis- give optimum performance in extruded sheet, cast tance. Flow characteristics may be adjusted indepen- film and blown film (Table 2). TOPAS grades differ dently of heat resistance with molecular weight. primarily in their glass transition (Tg) and the related Table 2: Standard TOPAS film grades TOPAS 9506F-04 High clarity extrusion grade for use in food and medical packaging as either a discrete layer in multilayer film or in blends with polyethylene (PE). It has a low glass transition tempera- ture (Tg) and provides excellent clarity, stiffness, water vapor barrier and good thermoform- ability. TOPAS 9506 is especially recommended for use as discrete layers in blown films due to its higher molecular weight and increased melt strength for better bubble stability. TOPAS 8007F-04 High clarity extrusion grade for pharmaceutical, medical and food packaging. It is most of- ten used in coextruded cast film applications, e.g., blister film, and offers excellent clarity, stiffness, water vapor barrier and thermoformability. This grade has the broadest range of regulatory approvals within the packaging portfolio. TOPAS 8007F-400 Standard extrusion grade with a broader extrusion processing window (equipment and condi- tions) and is recommended for the extrusion of discrete 100% TOPAS layers or high (> 65%) COC content blends. It is especially recommended for use in grooved feed extruders. TOPAS 6013F-04 High clarity extrusion grade having high temperature resistance for pharmaceutical, medical and food packaging. It has a high glass transition temperature (Tg) and provides excellent clarity, stiffness, water vapor barrier and thermoformability. It can be used in coextruded films as a discrete layer or in blends with PE. Further development grades may be available upon request; please consult your TOPAS representative. 3. Product performance 3.1 Physical properties TOPAS is a family of olefinic polymers containing atures approaching its Tg. Film grades of TOPAS have ethylene and typically 30 to 60 mole% norbornene. Tg’s ranging from 65 to 138°C. TOPAS is the only Unlike most polyolefins, TOPAS is an amorphous ther- polyolefin having heat deflection temperatures (HDT) moplastic having a glossy, crystal clear appearance as high as 170°C (338ºF) at 0.45 MPa (66 psi). with high modulus and low shrinkage. It is available For all TOPAS grades, HDT is about 10°C lower with glass transition temperatures (Tg) ranging from than Tg values. Other properties associated with the 65 to 178°C and maintains high modulus at temper- various grades of TOPAS are given in Table 3. 6 Cyclic Olefin Copolymer (COC) Table 3: Physical properties of TOPAS Property Unit Test method 9506F-04 8007F-04 8007F-400 6013F-04 Density kg/m3 ISO 1183 1020 1020 1020 1020 Melt Volume Rate (MVR) · at 230°C, 2.16 kg load 6.0 12.0 11.0 1.0 cm3/10 min ISO 1133 · at 190°C, 2.16 kg load 1.0 2.0 2.0 – 2 Melt Flow Rate · at 230°C, 2.16 kg load 5.5 11.0 10.1 0.9 g/10 min * · at 190°C, 2.16 kg load 0.9 1.9 1.8 0.1 Water absorption (23°C - sat) % ISO 62 0.01 0.01 0.01 0.01 3 Thermal properties Glass transition temperature ISO 11357 °C 65 78 78 138 (10°C/min) -1, -2, -3 Test specimen production (film) Type of extrusion cast cast cast cast Thickness of specimen μm 70 70 70 70 Mechanical properties (film) Tensile modulus · machine direction 1700 2200 2100 2400 MPa ISO 527-3 · transverse direction 2000 1800 1700 2250 Tensile strength at break · machine direction 55 57 55 55 MPa ISO 527-3 · transverse direction 55 50 50 45 Elongation at break · machine direction 2.9 2.9 3.4 2.4 % ISO 527-3 · transverse direction 3.6 3.0 3.4 2.2 Elmendorf tear strength · machine direction 230 225 – 9 g ISO 6383-2 · transverse direction 240 230 – 9 Dart Drop Impact Strength, F50 ISO 7765-1 < 36 < 36 – < 36 Optical properties (film) Gloss 60° % ISO 2813 > 100 > 100 >100** > 100 Haze % ISO 14782 < 1 < 1 >2** < 1 Barrier properties (film) Water vapor permeability g-100 μm/ ISO 15106-3 0.8 0.8 0.8 1.3 (38°C, 90% RH) (m2-day) Oxygen permeability cm3-100 μm/ ASTM 170.0 200.0 – 280.0 (23°C, 50% RH) (m2-day-bar) D3985 * Calculated from ISO 1133 MVR using a melt density of 0.92. ** Haze level will depend on processing conditions. The above values are representative values and not guaranteed values for quality or design purposes. 7 Packaging www.topas.com 3.1.1 Mechanical properties of blends sistance and significantly decreases Elmendorf tear values, especially in the machine direction, enabling TOPAS is a stiff (high modulus) amorphous polymer the design of “Easy Tear” and “Linear Tear” products.
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