(Teknor Apex, Pawtucket, RI USA) … For decades the Monprene® TPE product line has been the premier material choice for regulated consumer products. The latest series is now specifically designed for use in the manufacture of pet products. Monprene® CP-16500 series of thermoplastic elastomers (TPEs) are durable and sustainable alternatives to thermoset rubber for dog toys, with a broad range of performance and aesthetic characteristics. This series includes clear, translucent and opaque grades with low, medium and high gloss. All grades exhibit excellent colorability and are easily moldable. This extensive portfolio includes specialty grades that offer improved durability with superior resistance to puncture and tear—ideal for the demanding applications of dog chew toys.
In order to help compare the durability of different materials, Teknor Apex designed a “bite resistance” laboratory test to simulate the forceful action of a dog biting a toy. Based on the ASTM test method F1306 for flexible films, the Teknor Apex Bite Resistance test measures the puncture resistance, or the force required to penetrate an injection molded specimen. A “Puncture Rating” is assigned to each material based on this force, and uses a scale of 1 to 5, with 5 having the greatest resistance.
The figure below shows that the Monprene® specialty grades exhibit considerably high bite resistance.
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