Thermoplastic Elastomer (TPE)

What is a TPEs?

Thermoplastic Elastomers (TPEs) are generally low modulus, flexible materials that can be stretched repeatedly to at least twice their original length at room temperature with an ability to return to their approximate original length when stress is released.

The grandfather materials with this property are thermoset rubbers, but many families of injection-moldable thermoplastic elastomers (TPEs) are replacing traditional rubbers. In addition to use in their basic form, TPEs are widely used to modify the properties of rigid thermoplastics, usually improving impact strength.

Multiprene Internationals is an innovative, globally custom formulations of speciality thermoplastic elastomers.

Product List

Multiprene is totally custom based organisation. So we cater each and every area of TPEs applications. We have a wide variety of technology to develop our innovative TPE products.
This product lines features 5 standard products familiar with a variety of performance to provide our customers with the optimum TPE solutions of their products.

This is maximum used grades of General purpose applications. Like , consumer , packaging , appliances markets etc.

This applications is Beauty of TPEs to give the best look of the product after OVERMOULDING with TPE. Like , PP + TPE , ABS+ TPE , HIPS + TPE , TPE + TPE.

MEDICAL Industry has given a revolutionary changes for TPEs. TPE has now become the important parts of medical products. like, I V sets, syringe gaskets, dropper bulb, blood collection cap, euro cap, stopper, face mask etc.

Now a days TPEs are getting Brand name in Automobile Industry, with replacing max. Rubber applications along with pvc+nbr. Like- Bike Blinker, lamp holder, profiles , and many interior parts.

Its called a Cable Industry. One of the major TPE Consumer in each and every applications like, Good low brittleness temperature , high temperature upto + 110 C . Flame Retardant with the UL Norms. Glossy as well as Matty finish depends on customer 's requirements.

Service temperature for TPEs

The Service Temperature is loosely used to define the maximum temperature at which a material is suited for use.

Service Temperature is dependent upon many factors, including performance requirements, length of exposure, presence of a load and part design.

Some common methods of measuring service temperature are Vicat Softening Temperature, Heat Deflection Temperature (HDT), Underwriter's Laboratory (UL), Half Tensile Strength and other proprietary methods depending on the industry.

Examples are - High Temperature resist for Automobile Industry, Transportations And cable industry.

Low Temperature mainly used in Handle grips on personal care products and kitchenware, Medicals, telephone cords and toys.

Why TPE indicated by Hardness?


The softness or hardness of a material is the first criteria considered when choosing a thermoplastic elastomer. Hardness is also related to other important design properties, such as tensile, stress of the product and flexural modulus.

Relationship to other properties

Hardness is often confused with other properties such as flexural modulus. Although both properties reflect how the product feels in the customer's hands, flexural modulus measures the resistance to bending, while hardness measures the resistance to indentation. Within a specific TPE family, these two properties are related. Generally as hardness goes up in value, so does flexural modulus.

Creep resistance and tensile strength in a given TPE family are generally directly related. This means a softer TPE will creep more and have less tensile strength than a harder material. The coefficient of friction (COF) varies inversely with hardness. As the hardness of a TPE increases the COF generally decreases.

Regulatory Terms for TPE use.

Food and Drug Administration (FDA)

Under the code of Federal Regulations, the US Food and Drug Administration provides detailed specifications regarding the requirements for acceptance of various polymers and compounds for intended use in food applications. When a product is classified as an "FDA grade" material, it designates that only 21 CFR, approved materials are used in its formulation.

R E A C H Compliance.

The National Sanitation Foundation is known for the development of standards, product testing and certification services in the areas of public health safety and protection of the environment. NSF certification programs are accredited by the American National Standards Institute (ANSI/RAB), The Dutch Council for Accreditation (RvA) and the Standards Council of Canada (SCC).
Testing alliances allow for NSF testing acceptance in other regions of the world as well. Some of the alliances include Intertek Testing Services (ITS), KIWA N.V. in The Netherlands, Canadian Standards Association (CSA) and QMI in Canada, and the Japan Gas Appliance Inspection Association (JIA) in Japan, to name a few.
Typical applications requiring NSF certification are potable water applications, water treatment systems, restaurant services and plumbing.

D M F ( Drug Master File )

USP specifications cover blood and body fluid compatibility/contact applications. USP tests are designed to provide information on biological effects of polymer materials used in containers. There are six classes into which a polymer may be placed, depending on its performance in specific USP biological tests. Each increasing class number, from I to IV, requires that a polymer be subjected to additional tests, with each level using more extraction vehicles than the previous class. There is also a range of increasingly higher extraction temperatures which may be selected to further characterize the material.

Underwriters Laboratories (UL)

Underwriters Laboratories is an independent, not-for-profit product safety and testing certification organization based in the US. Common tests are UL-94 (vertical and horizontal burn test further categorized under HB, V0, V1, or V2), VTM (thin film burn test) and VW (vertical wire burn test). Typical applications covered by UL specifications include hand-held electronics, business machines and appliances.

A S T M .

In our country , all the polymer test mainly comes under ASTM , following all the specifications of Test Specimen along with Test Report.
For cable applications requiring military specs include umbilical cables, field-use flexible cords, underground cable and ship-to-shore cable.

Canadian Standards Association (CSA)

CSA is the principle Canadian standards body that sets performance criteria and test methods in certain applications. This is a body similar to that of ASTM, UL, DOT, FDA and MIL in the United States.