Why does the price of TPE vary much?
This topic covers only the styrene based Thermoplastic Elastomer compounds (TPS) that Phon Tech specialize.
The compositions of styrene based TPE are varied and usually the ingredients include Styrene Block copolymers (SBCs), plastic (PP, PE, PS, EVA), paraffinic oil, calcium carbonate and additives. Therefore, these material prices would affect the price of TPE.
The quality of SBCs also vary from manufacturer to manufacturer and so does the price. Without mention that these polymers contain prime, wide and off spec, which sometimes are difficult to identify the difference by appearance. However, using inferior or unstable quality material would affect customer's production and furthermore, jeopardize the goodwill.

The density of TPE also plays an important factor in price. With higher density, normally it indicates that the filler content (usually Calcium Carbonate) is more. With more filler, the cost of TPE would be cheaper. However, the yield rate per kilogram material would decrease. Therefore, density is to be considered while you calculate the cost of TPE.

Furthermore, the process oil percentage also affect price of TPE. Usually with higher percentage of process oil, the cost of TPE is lower and the melt flow rate of TPE is higher. However, excess of oil may have problem of oil bleeding. Usually such problem occurs few months after TPE is converted to semi-finish or finished products. This would cause massive loss.

So beware of the factors that would affect the price difference in TPE when you choose material. Make sure you buy TPE from trustworthy makers with good credit.
What is the difference between TPE and TPR?
Thermoplastic Elastomers (TPE), sometimes referred to as Thermoplastic Rubbers (TPR) are causing confusion in many customers. TPE and TPR represent same type of material, which is flexible at room temperature just like rubber but when heated, it can be processed like normal plastic. Though they all indicate same type of material, it is more popular to use TPE instead of TPR when referring.
What does the grade number of PHOENIX™ TPEs mean?
PHOENIX™ TPEs grade codes contain five digits, for example: 03452
The first two digits (03) represent series number. The second two digits (45) represent the Shore A hardness. The last digit represents the formulation number. Some grades may vary and please refer to our TDS for more information.

What are the benefits of Thermoplastic Elastomers comparing with traditional thermoset rubber?
• Ease of design
• Lower conversion costs
• Shorter processing times
• 100% recyclable – can be reused upto 3-5 times (different grades may vary)
• Consistency of product
• Energy saving
• Less manpower
• Simpler processing
• Better control of product quality
• Light weight (Density: 0.88~1.2g/cm3)
• Can be blow molded
• Can be thermoformed
• Lower per-piece finished part cost
• More environmentally friendly
Are PHOENIX™ TPEs safe for food contact products?
More and more food contact products use TPEs. Therefore, the focus of food safety is more.
FDA and EFSA are most referred authority for food safety regulation and most of people would request their products to meet those standards.

So, are PHOENIX™ TPEs safe for food contact?
Well, the answer is “IT DEPENDS”.

So many different kinds of food and food packaging products are around us. Food contact time, temperature and conditions may vary as well. Hence no matter FDA or EFSA does provide a system to coordinate different type of foods, contact time and temperature, which utilizes different type of food simulants to test the hazardous substance migration at varied contact time and temperature. Usually foreseeable most stringent using conditions would be considered when choosing test conditions.

Phon Tech could provide FDA CRF 21 177.1210 (conditions vary) certificate, as well as 177.2600 (distilled water) certificate for Phoenix TPEs. For more details, please contact our sales representative.