Unsintered Extruded PTFE

Unsintered extruded PTFE, also known as unsintered PTFE, is a type of PTFE material that is produced using a unique process. Unlike traditional PTFE, unsintered extruded PTFE is not subjected to the sintering process after extrusion, which makes it a unique material with distinct properties.
One of the most significant advantages of unsintered extruded PTFE is its superior machinability. It is much easier to machine than sintered PTFE, which makes it an ideal material for applications that require tight tolerances or precision machining. Additionally, unsintered extruded PTFE has a lower coefficient of friction compared to sintered PTFE, which further enhances its machinability.
Another advantage of unsintered extruded PTFE is its improved electrical insulation properties. It has a much higher dielectric strength compared to sintered PTFE, which makes it an ideal material for high-voltage applications. In addition, unsintered extruded PTFE has excellent chemical resistance, which makes it suitable for use in harsh chemical environments.
Despite its unique properties, unsintered extruded PTFE is not as widely used as sintered PTFE. This is partly due to its higher cost and availability in smaller sizes. However, in applications where its unique properties are required, unsintered extruded PTFE is an excellent material choice.
Unsintered extruded PTFE is used in a variety of applications. It finds use in chemical processing equipment, electrical insulation components, and mechanical seals. It is also used in the manufacture of bearings, bushings, and other parts that require tight tolerances and precision machining.
In conclusion, unsintered extruded PTFE is an excellent material with unique properties that make it suitable for a wide range of applications. Its superior machinability, improved electrical insulation properties, and chemical resistance make it an ideal material choice in many industries. Despite its higher cost and limited availability in smaller sizes, unsintered extruded PTFE remains a valuable material for manufacturers and engineers.

● PTFE(Polytetrafluorethylene)

● Expanded, natural or white

 

Features

Sintered PTFE tape has a specific gravity or density of 2.15g/cm3, a crystallinity of 50% to 70%, a porosity of less than 1.0, a matrix tensile strength of 20-30 MPa, and a thermal conductivity of 0.2 Kcal/m-hr (degrees Celsius). Unsintered PTFE tape has a specific gravity or density of 1.5g/cm3, a crystallinity of 92% to 98%, a porosity of less than 10, a matrix tensile strength of 10-20 MPa, and a thermal conductivity of 0.2 Kcal/m-hr (degrees Celsius).

 

Both unsintered and sintered PTFE tapes have poor cold flow resistance and excellent chemical resistance, but unsintered tape has poor abrasion resistance compared to the moderate abrasion resistance of sintered tape.

 

Design & Manufacturing

Engineers produce sintered or "full density" PTFE tapes by compression molding cylindrical billets, heat sintering them in a PTFE sintering furnace, and scraping a thin film off the billet. Engineers produce unsintered PTFE tapes by cold extruding fine PTFE powder through a special die.

 

 

Difference Between Sintered and Unsintered PTFE Tape

PTFE, or polytetrafluoroethylene, better known by its brand name Teflon, is an electrical insulator used to make premium cables and wires. PTFE tape is known as a premium insulator for its many properties, including low dissipation, wide temperature tolerance, high frequency stability, low smoke generation, electrical resistance, dielectric constant, and its resistance to flame, chemicals, solvents, moisture, and volume. Sintered and unsintered PTFE tapes are two of the three main types used by design engineers when making high-performance cables and wires.

 

 

 

Certifications

 

ISO9001  

UL

WRAS

REACH

ROHS

ACS

 

Application 

Design engineers most often use PTFE tape as an insulating material for connecting wires in military and commercial aircraft electronic equipment. Engineers wrap unsintered PTFE tape around a conductor and then heat-sinter it to produce a strong wire with integrity, rigidity, and uniform insulation. Engineers use unsintered PTFE tape to create high-speed data lines of superior quality with minimal signal loss. 

Our Service

 

01

Pre-sale service

We can suggest our customer the correct the items and offer moderate prices.

02

Self-Inspection service

We will inspect our products during the production, we do radom inspection test to ensure the standard quality.

03

After-sales service

Respond to consumer questions, answer consumer inquiries, and deal with consumer comments.

How To Cooperate With Us?

 

Our address

NO.278, QINGXIAN ROAD, LINGLONG STREET, LINAN, HANGZHOU, ZHEJIANG, CHINA

Phone Number

86 13732295276 (Wechat/WhatsApp)

E-mail

fiona@foreverseal.com

 

do you have any question?

 

Can we use appointed forwarder?

Yes, we normally do FOB term.

 

Is your ptfe film unsintered?

Yes, but we also have sintered ptfe film

 

What is the ptfe film density available?

Normally we make it low density from 0.5-0.9g/cm3 or high density of 1.6g/cm3.

 

How far from your factory to the nearest airport?

It needs 1.5 hours by car.