Dust≤100 ppm High Clarity PET Resin Chip for PET Sheet Material Production

Dust≤100 ppm High Clarity PET Resin Chip for PET Sheet Material Production

Problem

PET sheet and thermoforming lines are highly sensitive to fines and dust, which clog feeders, cause gel spots and create surface defects.

Black specks and gels force downgrades, and the sheet may fail transparency requirements for food trays.

Sheet lines run at controlled thickness, so even a tiny gel or speck is magnified across a large surface and can downgrade a whole roll.

Black specks and gels force transparency failures, reducing usable yield and often leading to customer complaints on thermoformed trays.

A single contaminated roll can halt a downstream thermoforming line, so consistency matters as much as average quality.

Cause

Dust and fines come from chip attrition during transport and handling; they melt at a different rate and form defects.

Gels and unmelts scatter light and appear as visible blemishes in clear sheet, reducing usable yield.

Because sheet runs at controlled thickness, even small contamination is magnified across a large surface area.

Dust and fines arise from chip attrition during transport and handling; they melt at a different rate and form gels and unmelted spots.

Because clear sheet has no color to hide defects, any contamination shows immediately, and the surface finish suffers as well.

Entrained fines also raise the risk of unmelted particles passing into the sheet, which appear as visible blemishes and reduce usable yield.

Solution

This grade is supplied with dust ≤100 ppm for a cleaner extrusion feed.

High clarity and low fines mean fewer gel spots and better light transmission in the finished sheet.

Stable IV supports consistent extrusion and thermoforming, so trays keep their shape and transparency.

Supplied at dust 100 ppm or below, the resin feeds cleanly and produces fewer gels and specks, improving light transmission in the finished sheet.

Stable IV supports consistent extrusion and thermoforming, so trays keep their shape, clarity and mechanical strength.

Cleaner feed and stable melt reduce scrap and rework, so sheet producers get more saleable area from every tonne of resin, and fewer stoppages keep delivery schedules predictable.

Selection Guide

• Choose this grade for PET sheet, thermoformed trays and clear packaging sheet.
• Use the upper IV range for thicker sheet and deeper draw ratios.
• Keep conveying gentle and closed to limit new fines generation.
• Verify transparency on finished sheet, not only on incoming chips.

Application Scenarios

• PET sheet and rollstock for packaging.
• Thermoformed food trays and containers.
• Clear sheet requiring high light transmission.

FAQ

Why is dust a problem in sheet?
Fines melt unevenly and create gels and spots that ruin clarity and force downgrades.

Is this grade for blow molding?
It is mainly intended for sheet extrusion and thermoforming.

How does IV affect thermoforming?
Higher IV improves melt strength for deeper draw and thicker sheet.

Is it food-contact approved?
Yes, it complies with FDA and EU REACH.

IV Viscosity Differences & Bottle Type Matching

The main difference between the PET grades is the IV viscosity of PET, which decides the type of bottle each grade is used for:

Low IV (0.780–0.800 dL/g) suits thin-wall still water and hot fill bottles; medium IV (0.830 dL/g) suits oil, cosmetics and APET sheet / roll; high IV (0.855–0.875 dL/g) builds the wall strength and stress-crack resistance needed by CSD, fast-reheat and gallon bottles.