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Product / Spiral Twist

Technical data

Spiral Twist

The sales range includes Spiral Twist 1800, with outer packaging described as a carton of 24. Composition, twist parameters and ordering units are confirmed for the specific variant; 1800 is a product designation, not a declared length.

Discuss the specification
A raw-material property is not a finished-product test result

Material data supports preliminary selection. Product behaviour also depends on construction, diameter, finish and process conditions. Critical applications require tests and documentation for the exact variant.

MAL-ST-PET

Spiral Twist - polyester PET

Data sheet PDF

Customer-process validation required · Specification and availability require confirmation.

Identification and construction

Construction
Twisted cord
Variant materials
Polyester PET
Diameter for specification
0.5–3 mm
Component yarn count · Ne / Nm
To be confirmed; Ne in the cotton system or Nm.
Finished-product linear density · tex
Nominal value and tolerance to be confirmed.
Number of component yarns · PLY
Ply count and plying stages to be confirmed.
Twist · S/Z · TPM
Direction and turns per metre to be confirmed for each stage.
Colour
to specification
Winding
spool, roll, cut lengths

Finished-product performance

Breaking force
To be confirmed for the exact variant
Elongation
To be confirmed for the exact variant
Length per unit mass
To be confirmed for the exact variant
Operating temperature
To be confirmed for the exact variant
Food contact
Not assessed for food contact

Materials and application limits

Polyester PET

A low-moisture thermoplastic fibre for wet and technical uses away from oven heat and flame.

Heat
Moderate heat; variant test
Flame
Melts and may drip
Moisture absorption
Low
  • Polyester can soften and melt at elevated temperature.
  • Melting temperature is not a service-temperature limit; time, load, moisture, crystallinity and construction all matter.
  • Do not recommend it for wicks, oven use or smoking.
Material evidence
Commercial moisture regain
0.4% commercial regain reference. This supports low moisture uptake directionally but is not a finished-product water-resistance rating.Commercial mass and directional comparison only.
PET melting peak in cited DSC samples
Approximately 255-259 C peak melting temperature in the cited PET fabric samples. This is not a safe working-temperature limit.Material identification and hazard context only. Service temperature must come from finished-product testing under load and exposure time.
Combined humidity and temperature degradation
PET hydrolytic degradation depends on temperature, humidity, crystallinity and molecular orientation; low moisture regain alone is not sufficient evidence for hot-wet service.Use to trigger a steam or hot-wet product test, not to approve a variant.
Thermoplastic response to heat and flame
Polyester can shrink, melt and drip under flame exposure. The exact behaviour depends on construction and additives.Hazard communication only; not a classification of a Malkop product.
Documentation and parameter verification plan

Approval for a particular application requires an approved specification, tests and documents. This sheet is not a certificate.

ISO 139 — conditioning atmosphere, ISO 2060 — linear density, ISO 2061 — twist, where applicable, ISO 2062 or ASTM D2256 — breaking force and elongation, after scope check, Wet/dry tensile comparison for the finished variant, Customer process trial

TDS-MAL-ST-PET
Request a sample of this variantSend requirements
MAL-ST-BLD

Spiral Twist — Cotton / PET Blend

Data sheet PDF

Customer-process validation required · Specification and availability require confirmation.

Identification and construction

Construction
Twisted cord
Variant materials
Cotton / PET Blend
Diameter for specification
0.5–3 mm
Component yarn count · Ne / Nm
To be confirmed; Ne in the cotton system or Nm.
Finished-product linear density · tex
Nominal value and tolerance to be confirmed.
Number of component yarns · PLY
Ply count and plying stages to be confirmed.
Twist · S/Z · TPM
Direction and turns per metre to be confirmed for each stage.
Colour
to specification
Winding
spool, roll

Finished-product performance

Breaking force
To be confirmed for the exact variant
Elongation
To be confirmed for the exact variant
Length per unit mass
To be confirmed for the exact variant
Operating temperature
To be confirmed for the exact variant
Food contact
Not assessed for food contact

Materials and application limits

Cotton / PET Blend

A profile governed by the exact cotton/PET ratio. Composition, construction and finished variant must be assessed together.

Heat
Temperature test required
Flame
Melts and may drip
Moisture absorption
Medium
  • Do not calculate service temperature as an average of cotton and PET properties.
  • The exact blend ratio and finished variant require validation.
Material evidence
Cotton / PET blend ratio
The exact cellulose/PET ratio must be identified for the product variant. Behaviour from one blend ratio must not be transferred to another ratio or construction.Composition-control gate. Thermal, mechanical and food-contact conclusions still require finished-variant evidence.
Mixed cellulose / thermoplastic response
The cotton phase can char and burn while the PET phase can shrink, soften, melt and drip. The finished response depends on ratio, yarn and construction.Hazard communication only; not a fire classification or product service-temperature approval.
Documentation and parameter verification plan

Approval for a particular application requires an approved specification, tests and documents. This sheet is not a certificate.

ISO 139 — conditioning atmosphere, ISO 2060 — linear density, ISO 2061 — twist, where applicable, ISO 2062 or ASTM D2256 — breaking force and elongation, after scope check, ISO 1833-11 — cellulose/PET composition, Wet/dry tensile comparison for the finished variant

TDS-MAL-ST-BLD
Request a sample of this variantSend requirements

Yarn count and twist

Ne / Nm, linear density in tex, ply count and S/Z twist with TPM describe different product characteristics. Finished-cord diameter is specified separately.

Textile designations and the Ne 6/3 example
NeEnglish cotton count
Number of 840-yard hanks per pound of yarn. Higher count means lower linear density, not diameter in mm.
NmMetric count
Metres of yarn per gram. Nm and Ne are different systems; Nm 6 is not the same as Ne 6.
tex / dtexLinear density
tex: grams per 1,000 m; dtex: grams per 10,000 m. 1 tex = 10 dtex. State whether the value applies to a component yarn or the finished product.
PLYNumber of component yarns
Number of yarns combined at a given plying stage. Specify each stage of a cabled construction separately; ply is not the number of individual fibres.
S / ZTwist direction
Direction of the twist. For plied yarns, distinguish the component-yarn twist from the final plying twist.
TPM · turns/mTwist level
Turns per metre. TPI means turns per inch; 1 TPI ≈ 39.37 TPM. S or Z alone does not specify the twist level.
N / cN/texBreaking force / tenacity
Force at break and force relative to linear density. Comparison requires consistent test methods and conditions.
%Elongation at break
Change in length at break. This is not the same as an elastic cord's working extension.

Designation example, not a MALKOP product specification

Ne 6/3: three Ne 6 singles, or 3 PLY. Each single is approximately 98.4 tex; the nominal total is approximately 295.3 tex before twist contraction. By comparison, Nm 6 is approximately 166.7 tex.

Conversions: tex ≈ 590.6 / Ne (cotton); tex = 1000 / Nm. Yarn count does not convert directly to cord diameter.

Terminology references: CottonWorks: Ne, tex, Nm, PLYISO 2061Safilin: Nm, PLY

CALC / VARIANT DATA

Engineering calculators

METERS → KGDATA REQUIRED
NUMBER OF SPOOLSDATA REQUIRED
MONTHLY METERSDATA REQUIRED
MONTHLY SPOOLSDATA REQUIRED

Calculations run only with actual parameters for a specific variant. Missing data is never treated as zero. Cost remains disabled until pricing is enabled by an administrator.