Polyamides for Extrusion
Ultramid® extrusion grades are offered in a wide variety of combinations of viscosity and additives. Their outstanding properties have made them indispensable for transparent and flexible food packaging, medical packaging, monofilament applications (e.g. fishing lines, fishing nets, lawn trimmers) and cable sheathing.
Applications
Ultramid® B (Homopolyamide PA 6) Types:
Viscosity number | Relative viscosity | Additives | Ultramid® applications | |
Ultramid® B26 HM 01 |
140 | 2.6 | Lubricants, plasticizers, stabilizers | Wire/cable jacketing |
Ultramid® B27 E |
150 | 2.7 | - | compounds, monofilaments, paper coating |
Ultramid® B33 L |
195 | 3.3 | Lubricants | BOPA, monofilaments, paper coating |
Ultramid® B36 LN |
218 | 3.6 | Lubricants, nucleation | Cast Film |
Ultramid® B36 LNV |
218 | 3.6 | Lubricants, nucleation | Cast Film |
Ultramid® B40 L |
250 | 4 | Lubricants | blown film, casing, monofilaments |
Ultramid® B40 LN |
250 | 4 | Lubricants, nucleation | Cast Film |
Ultramid® B36 SL |
250 | 4 | Lubricants | casing, blown film |
Ultramid® B36 SLN |
250 | 4 | Lubricants, nucleation | extrusion lamination, blown film, Cast Film |
Ultramid® C (Copolyamide PA6/66) Types:
Ultramid® C33 LN |
190 | 3.3 | Lubricants, nucleation | blend component for casings |
Ultramid® C37 LC |
225 | 3.7 | Lubricants | monofilaments, blown film |
Ultramid® C37 LXC |
225 | 3.7 | Lubricants | monofilaments |
Ultramid® C40 L |
250 | 4 | Lubricants | blown film |
Ultramid® C40 LN |
250 | 4 | Lubricants, nucleation | blown film |
Ultramid® C40 LX |
250 | 4 | Lubricants | monofilaments |
Ultramid® Flex F Types:
Ultramid® Flex F38 | 199 | 3.8* | cast film, blown film, monofilaments |
Viscosity class Relative viscosity in 96%/23°C sulphuric acid (i.e 36 for RV 3.6). * Except Ultramid Flex F38, measured in different solvent.
Sites | ||
E |
= |
Compounding |
L |
= |
Lubricated |
LN |
= |
Lubricated and nucleated |
N |
= |
N-Polymer |
NSD |
= |
N-Polymer pigmented semi dull (0.3 %) |
SL |
= |
Slow crystallisation lubricated |
SLN |
= |
Slow crystallisation lubricated and nuclear |
V |
= |
Very low monomer/oligomer content |
NFD |
= |
N-Polymer pigmented full dull (1.6 %) |
Supply form and storage
Ultramid® is supplied as pre-dried pellets ready for processing in a variety of moisture-proof containers such as bags, octabins, big bags and loose bulk.
To ensure that the perfectly dry material delivered cannot absorb moisture from the air, the containers must be stored in dry rooms and always carefully resealed after any material is removed. Containers stored in cold rooms should be allowed to equilibrate to normal temperature before opening so that no condensation occurs on the pellets.
Safety precautions during processing
Like all thermoplastic polymers, Ultramid® also decomposes when exposed to excessive heat, such as overheating or cleaning by burning off, forming gaseous decomposition products. As well as caprolactam (with Ultramid® B (PA 6) and C (PA 6/66)), ammonia and carbon monoxide are formed above approximately 310°C. Above approximately 350°C, small quantities of pungent-smelling vapors of aldehydes, amines and other nitrogenous decomposition products are also formed.
In general, measures should be taken to provide ventilation and venting of the workplace, preferably by means of an extraction hood over the cylinder unit.
Food regulations
Information regarding the food approval status of Ultramid® and other plastics is available under menu item Sustainability – Product safety and environment.