The shortcut to reading a spec sheet.

What Is Polypropylene (PP)? Properties and Uses

One of the most widely used members of the polyolefin family: how is PP produced, what are its standout properties, and which industries use it?

What Is Polyethylene (PE)? The AYPE, YYPE and LLDPE Family

Three materials produced from the same monomer (ethylene) but behaving very differently depending on density and chain structure: where does the difference between AYPE, YYPE and LLDPE come from?

What Is MFI (Melt Flow Index) and How Do You Read It?

The most frequently asked value on a spec sheet: what does MFI measure, which production method suits low vs. high MFI, and why is the test condition always written next to the value?

What Is Density and Why Does It Matter in Plastic Selection?

The single value that decides whether a PE is AYPE or YYPE: density. How is it measured, how does it relate to crystallinity, and how does it affect selection?

How Does the Plastic Injection Molding Process Work?

From pellet to final part: the basic stages of injection molding, what determines cycle time, and how material selection (especially MFI) affects the quality of the process.

What Is Extrusion? The Film, Pipe and Profile Production Process

From shopping bags to drinking-water pipes: how does the extrusion process work, what's the difference between single- and twin-screw extruders, and why do film and pipe extrusion require different equipment?

A Guide to ISO and ASTM Test Standards for Polyolefins

What do codes like ISO 1133, ASTM D792 and ISO 527, which frequently appear on spec sheets, actually mean? A short guide to the most commonly used test standards.

A Guide to Additives in Polyolefins

UV stabilizer, antioxidant, slip agent, anti-block... what are the additives added to pure PP/PE pellets, and what problem does each one solve?

What Is Masterbatch? Coloring and Additive Methods

Most colored plastic products aren't painted — they're colored with masterbatch. What exactly is masterbatch, how does it differ from pure pigment, and how is it dosed?

Key Differences Between PP and PE

Both are from the polyolefin family, but each is produced for different properties and different applications. Which is preferred in which case?

The Difference Between Homopolymer PP and Copolymer PP

You'll see 'homopolymer' or 'copolymer' on a spec sheet — this distinction directly affects impact strength, transparency and low-temperature performance.

What Is LLDPE? Differences from LDPE and HDPE

Linear low-density polyethylene (LLDPE) has increasingly become the preferred choice in film applications in recent years. The reason is the strength advantage provided by its linear chain structure.

Comparing Melting Points Across PP and PE Types

Same family, different melting ranges: why do PP, AYPE, YYPE and LLDPE have different typical melting temperatures, and how does this difference set the processing temperature?

Plastic Raw Material Packaging and Proper Storage Conditions

Bags, pallets, big-bags — what packaging does plastic pellet arrive in, and how should it be stored after delivery? The basic rules for preventing quality loss before processing.

Factors Affecting Plastic Raw Material Prices

Why do PP and PE prices keep changing? How do crude oil, exchange rates, supply-demand balance and maintenance shutdowns affect price — and why you won't see a fixed price on the site.

Do Polyolefins Need Drying? Moisture Management

The short answer to 'should I dry this raw material?' before injection molding or extrusion — and the exceptional cases where surface moisture leads to visible defects.

How Does the Raw Material Sample and Analysis Process Work?

Why does testing a sample matter before switching to a new grade, how does a typical analysis process work, and what should you check on a CoA?

Imported Raw Material Logistics: Containers, Freight and Delivery Times

How does imported PP/PE travel from a ship to a warehouse in Türkiye? The FCL/LCL difference, factors affecting freight cost, and the typical components of delivery time.

How to Read Plastic Raw Material Price Indices

What does the 'price index' you see on sources like ICIS and PAGEV actually mean, and how does it differ from a spot or contract price? A conceptual guide, without quoting figures.

Customs Duty, Surveillance Certificate and Certificate of Origin for Imported Raw Material

Three concepts you may encounter when buying imported PP/PE: what determines customs duty, when does a surveillance certificate come into play, and why does the certificate of origin matter?

Does GEKAP Appear on Your Raw Material Invoice?

The Recovery Participation Share (GEKAP) comes up often for plastic packaging — but how does it work for raw material purchases? Let's clear up the confusion.

Domestic Goods Certificate and Raw Material Origin in Public Tenders

Why can raw material origin matter for plastic processors selling to the public sector? A brief look at the price advantage the domestic goods certificate provides in tenders.

An Overview of Türkiye's Plastic Raw Material Market

How big is the sector, and how is the import-export balance trending? Highlights from PAGEV's current sector monitoring report.

Recycling Targets in the Polyolefin Sector

The EU's circular economy pressure is also affecting packaging manufacturers in Türkiye. What are the recycling rate targets set for PE and PP?

How Do Payment Terms Work in Raw Material Purchases?

Cash, deferred payment, checks, factoring — a general overview of the payment methods commonly encountered in B2B raw material trade in Türkiye.

What Are the ATR and EUR.1 Movement Certificates?

Two different documents you may encounter in trade with the EU: ATR is used for industrial goods within the Customs Union, EUR.1 for preferential origin agreements. What's the difference?