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
Colour: to specification
Winding: spool, roll, cut lengths

Finished-product performance

Food contact: Not assessed for food contact

Parameters to agree

A complete specification of the following parameters has not been published for this family. They are agreed for the selected construction and operating conditions; they must not be treated as verified properties.

Component yarn count · Ne / Nm
Finished-product linear density · tex
Number of component yarns · PLY
Twist · S/Z · TPM
Breaking force
Elongation
Length per unit mass
Operating temperature

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 variant Send 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
Colour: to specification
Winding: spool, roll

Finished-product performance

Food contact: Not assessed for food contact

Parameters to agree

Component yarn count · Ne / Nm
Finished-product linear density · tex
Number of component yarns · PLY
Twist · S/Z · TPM
Breaking force
Elongation
Length per unit mass
Operating temperature

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 variant Send 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, PLY ISO 2061 Safilin: Nm, PLY

Calculators: length, mass and winding

CALC / VARIANT DATA

Engineering calculators

VariantMeters per kg [m/kg]Meters per spool [m]Required length [m]Monthly consumption [kg]

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.