Blog - POTOP Co.,Ltd.

17 04, 2026

The role and field of lab film biaxial tensile tester

In laboratory environments, biaxially oriented stretching (also known as biaxial stretching) of thin films is a key polymer material processing technique. Its main function is to stretch the film in b...

14 04, 2026

Three-Screw Extruder & Twin-Screw Extruder

POTOP provides two types of pelletizers: three-screw and twin-screw, each with distinct characteristics in structure, performance and applicable scenarios.I. Differences in Structural Principle and Pr...

13 04, 2026

PMMA Film: Extrusion Casting Molding Technology

I. PMMA Film: An Ideal Material for Optical Clarity and VersatilityAs a "transparent star" among polymer materials, polymethyl methacrylate (PMMA) boasts a high light transmittance of 92%–9...

10 04, 2026

Multi-Layer Co-Extrusion Casting Line

As functional films evolve toward multi-layer and high-performance structures, they have become core basic materials for new energy, electronic displays, packaging and other industries. POTOP multi-La...

15 03, 2026

Applications of co-extruder machines

Co-extruder machines are reshaping modern polymer manufacturing by enabling two or more materials to be processed at the same time and formed into a single multilayer structure. This capability makes ...

10 03, 2026

What are the parts of a film blowing machine

A film blowing machine is one of the most widely used systems in polymer processing, producing plastic films for packaging, agriculture, hygiene, and industrial protection. Because film quality depend...

05 03, 2026

What is the extruder machine used for

An extruder machine (extrusion machine) is a core piece of equipment in modern manufacturing used to melt, mix, and continuously shape materials through a die into products such as films, sheets, pipe...

28 01, 2026

What are Biaxial Testing and Tensile Strength?

When studying how materials respond to different kinds of mechanical stress, scientists and engineers rely on a range of testing methods. Among them, biaxial and tensile tests are essential for unders...

11 07, 2025

Advanced Film Stretching & Extrusion Solutions Are Gaining Steam for New Energy Industry!

Why Is Advanced Film Processing Essential for Battery and Solar Technologies?The renewable energy sector demands specialized film processing solutions that go beyond conventional capabilities. As sola...

01 07, 2025

The Smart Researcher's Guide to Laboratory Extruders: Selection, Process Optimization & Next-Gen Solutions

Selecting the right lab extruder can dramatically impact your R&D efficiency, but with over 20 technical parameters to consider, most researchers struggle to make optimal choices.The three critica...

27 06, 2025

What Are Blown Films? How Are They Made and Where Are They Used?

Blown films surround us daily - from grocery bags to medical packaging - yet few understand how this versatile material transforms resin pellets into thin, strong films.Blown films are tubular polymer...