E Glass Processing Yarn Guide
Yarn Nomenclature
Glass fibre yarns are commonly designated according to ISO 2078 nomenclature.
Example
EC-9 136 x 3 S135 C1 H8
| Designation |
Description |
| E |
Glass Type (E Glass) |
| C |
Continuous Filament |
| 9 |
Filament Diameter (µm) |
| 136 |
Linear Density (Tex) |
| x 3 |
Number of Single Yarns Twisted Together |
| S |
Twist Direction (S or Z) |
| 135 |
Twists Per Metre (TPM) |
| C1 |
Sizing / Binder Type |
| H8 |
Bobbin Type |
Nomenclature Summary
Glass yarn designations typically communicate:
- Glass type
- Filament construction
- Filament diameter
- Yarn linear density (Tex)
- Number of plies
- Twist direction
- Twists per metre (TPM)
- Sizing or binder type
- Package or bobbin style
Yarn Constructions
Common Continuous Filament E Glass Yarn Constructions
| Filament Diameter (µm) |
Single Yarn Tex |
Typical Plied Constructions |
| 4 |
33 |
33 x 2, 33 x 3, 33 x 4 |
| 5 |
2.8, 5.5, 11 |
2.8 x 2, 5.5 x 2, 11 x 2 |
| 6 |
34, 68, 136 |
34 x 2, 68 x 2–4, 136 x 2–5 |
| 7 |
22 |
22 x 2, 22 x 3 |
| 9 |
34, 68, 110, 136, 204, 272 |
34 x 2–3, 68 x 2–5, 136 x 2–5 |
| 11 |
51, 102, 204, 340 |
51 x 2–3 |
| 13 |
136, 272, 408, 544 |
136 x 2–5, 272 x 4–5, 408 x 2–5, 544 x 2–5 |
Typical Twist Levels
| Twist (TPM) |
Application |
| 80 TPM |
Low twist |
| 100 TPM |
Medium twist |
| 120 TPM |
Standard industrial twist |
| 135 TPM |
Common weaving twist |
| 150 TPM |
High stability twist |
| 260 TPM |
High twist construction |
Twist Direction
-
S Twist – Left hand twist
-
Z Twist – Right hand twist
Standard Bobbin Designs
H9 Bobbin
| Feature |
Dimension |
| Height |
446 mm |
| Winding Height |
375 mm |
| Base Diameter |
203 mm |
| Tube Diameter |
82.9 mm |
| Maximum Package Weight |
8.8 kg |
H8 Bobbin
| Feature |
Dimension |
| Height |
446 mm |
| Winding Height |
375 mm |
| Base Diameter |
190 mm |
| Tube Diameter |
82.9 mm |
| Maximum Package Weight |
7.5 kg |
H5 Bobbin
| Feature |
Dimension |
| Height |
395 mm |
| Winding Height |
345 mm |
| Base Diameter |
150 mm |
| Tube Diameter |
60.15 mm |
| Maximum Package Weight |
5.0 kg |
H6 Bobbin
| Feature |
Dimension |
| Height |
336 mm |
| Winding Height |
290 mm |
| Base Diameter |
152 mm |
| Tube Diameter |
60.15 mm |
| Maximum Package Weight |
4.5 kg |
BBC Bicone Package
| Feature |
Dimension |
| Height |
230 mm |
| Winding Height |
200 mm |
| Internal Diameter |
69 mm |
| Maximum Outside Diameter |
250 mm |
| Maximum Package Weight |
10 kg |
European Glass Yarn Conversion Guide
Filament Diameter, Tex & Approximate Filament Count
| Filament Diameter (µm) |
Approximate Filament Count |
Typical Tex |
| 5 |
50 – 400 |
2.8, 5.5, 11 |
| 6 |
400 – 1600 |
34, 68, 136 |
| 7 |
200 |
22 |
| 9 |
100 – 1600 |
34, 68, 110, 136, 204, 272 |
| 11 |
200 – 1600 |
51, 102, 204, 340 |
| 13 |
400 – 1600 |
136, 272, 408, 544 |
Unit Definitions
| Unit |
Definition |
| Tex |
Grams per 1,000 metres |
| TPM |
Twists per metre |
| µm |
Microns (filament diameter) |
Common Twist Conversion
| TPM |
Approximate Twist Level |
| 80 |
Low |
| 100 |
Medium |
| 120 |
Standard |
| 135 |
Medium / High |
| 150 |
High |
| 260 |
Very High |
Notes on Continuous Filament E Glass Yarns
Continuous filament E Glass yarns are produced by drawing molten glass through precision bushings to create filaments typically ranging from 4 to 13 microns in diameter. The resulting yarns offer excellent tensile strength, dimensional stability, electrical insulation properties and thermal resistance, making them suitable for weaving, braiding, knitting, twisting, electrical insulation products, composites and high temperature technical textiles.
The most commonly used industrial constructions are based on 6µm and 9µm filament diameters, offering an excellent balance of processing performance, strength and flexibility.
