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| October 5th, 2009 |
Kuraray Co.Ltd.has thus far developed and marketed the SEPTON™ V Series and the SEPTON™ Q Series within its SEPTON™ and HYBRAR™ families of high-performance, highly functional thermoplastic elastomer products.To enhance and reinforce its lineup, Kuraray has now developed the SEPTON™ K Series which features superior bondability to glass and metal. |
| Like a number of other plastic products, SEPTON™ and HYBRAR™ hydrogenated styrenic thermoplastic elastomers can be easily molded; however, they are also characterized by rubber-like elasticity and are widely replacing vulcanized rubber as a soft molding material. Currently, annual demand for hydrogenated styrenic thermoplastic elastomers in the global market amounts to 120,000 tons and is expanding by approximately 7% per year (Kuraray estimate). |
| Combining Kuraray’s accumulated polymer synthesizing technologies and alloy technologies, the newly developed SEPTON™ K Series material represents a new concept in elastomeric materials. Existing products require pretreatment with primer to obtain the bondability needed for use on glass and metal. However, the SEPTON™ K Series can be directly injection molded or extruded onto glass or metal without pretreatment, achieving excellent bondability while retaining the advantages of a thermoplastic elastomer.
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| Thanks to its excellent bondability the SEPTON™ K Series is a revolutionary molding material that enables faster production and a high degree of freedom in product design, particularly in such fields as automotive, electric and electronics, and other glass-related components. Pursuing further advances in product and market development, Kuraray expects this product to enter the film, sealant, coating and adhesive fields. |
Kuraray is accelerating global applications development by commencing SEPTON™ K Series marketing simultaneously in Japan, Americas, Europe and Asia, with a view of expanding its elastomer business. This innovative material will become the heart of a new core line of products. |
| Kuraray plans to showcase the SEPTON™ K Series in the local agency’s booth (No.A4-4306) at FAKUMA 2009, the international trade fair for plastics processing. This show is being held at the Friedrichshafen Exhibition Center in Germany from October 13–19, 2009. |
1.The SEPTON™ K Series
Developed by combining Kuraray’s accumulated polymer synthesizing technologies and alloy technologies, the SEPTON™ K Series is an innovative, high-performance thermoplastic elastomer.
2.Characteristics
- May be used for injection molding or extrusion like existing thermoplastic elastomers
- Has the same lightness/density, plasticity, rubber-like elasticity, mechanical properties and low-temperature characteristics as existing thermoplastic elastomers
- Possesses superior bondability that negates the need for primer or other pre-treatment
- Possesses superior bondability to glass, all types of metals including light metals like aluminum and magnesium alloys
- Displays good, wide-ranging bondability, to both polar resins and nonpolar resins
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SEPTON™ K Series Representative Properties and Bondability with Glass and Metal
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Unit |
SEPTON™ K Series
(Development Product/ Temporary Name: KM079) |
Existing Styrenic Thermoplastic Elastomer |
| Hardness(Type A) |
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50 |
58 |
| Bondability |
Glass |
N/25mm |
128 |
< 1 |
| Aluminum |
N/25mm |
129 |
< 1 |
| Magnesium alloy |
N/25mm |
125 |
3 |
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| Sample making condition : Press molding: 240 deg C, 2MPa, 3 min. |
| Note: The above values are representative and not guaranteed |
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3.Potential Applications
- Auto parts
• Window glass and mirror weather-stripping, body and chassis components, electric components
- Housing and construction related
• Window glass weather-stripping
- Electric and electronic components, energy-related components
• Solar cell components
• Mobile phone, flat-screen TV, computer and digital device components
• Other components around metal enclosures and glass displays
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