Testing Equipment for Yarn, Woven Sacks, Tapes & Fabrics

Complete testing solution for yarn, HDPE/PP woven sacks, tapes & fabrics — tensile, GSM, denier, elongation, seam & burst strength. Made in India.

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Overview

Yarn to woven sack — every strength & grammage test

Woven sack, FIBC and technical fabric producers are graded on tape tenacity and elongation, sack tensile and drop performance, seam strength and grammage. A drift in any of these shows up as burst bags at the customer.

This solution brings together the instruments an HDPE/PP woven-sack laboratory needs — from a UTM for tape and seam strength to a GSM balance for fabric grammage and an oven for shrinkage. Manufactured in Mumbai to ASTM, ISO and IS methods used across the raffia industry.

Test Coverage

The tests a woven-sack & fabric lab needs

Each card links to the machine that runs the test.

ASTM D2256 · IS 1969

Tape & yarn tenacity

Breaking load, tenacity (cN/tex) and elongation of raffia tapes, monofilaments and yarns.

→ Universal Testing Machine

ASTM D5034 · IS 1969

Fabric tensile

Tensile strength and elongation of woven fabric strips in warp & weft directions.

→ Single Screw Tensile Tester

ISO 3801 · IS 1964

Fabric grammage (GSM)

Substance weight of woven and non-woven fabrics — the primary QC parameter.

→ Digital GSM Weighing Balance

ASTM D6980 · IS 2508

Shrinkage & ageing

Hot-air shrinkage of tapes and fabric plus heat-ageing for lifetime studies.

→ Digital Hot Air Oven

ASTM D792 · IS 1183

Density

Density & specific gravity of tapes and film — filler and blend verification.

→ Digital Density Apparatus

ASTM D1238 · ISO 1133

Melt flow (MFI)

MFI of PP & HDPE granules — incoming resin QC for consistent tape drawdown.

→ Melt Flow Index Tester

ASTM D6988

Tape thickness

Micrometer thickness of tapes, films and monofilaments.

→ Micro-meter Jig

ASTM D1003

Opacity

Opacity of pigmented tapes and UV-stabilised woven fabric.

→ Digital Opacity Tester

Standards

Standards covered

Woven-sack tests cover ASTM D2256 & IS 1969 (yarn/tape tenacity), ASTM D5034 & IS 1969 (fabric tensile), ISO 3801 & IS 1964 (grammage), ASTM D6980 & IS 2508 (shrinkage), ASTM D792 & IS 1183 (density), ASTM D1238 & ISO 1133 (MFI). Every instrument is calibration-certified.

Applications

FIBC / jumbo bagsHDPE / PP woven sacksSugar & cement sacksFertiliser bagsTarpaulin fabricsGeotextilesAgro shade netsRaffia tapes

FAQ

Frequently asked questions

What is denier and how is it measured?

Denier is mass in grams of 9,000 metres of a yarn or tape — a direct measure of linear density. It's calculated from tape length and weight; instruments like our UTM report tenacity in cN/tex or grams per denier.

What tenacity should a HDPE raffia tape achieve?

Typical HDPE raffia targets 5.5–6.5 g/denier tenacity with 15–25% elongation, but the right value depends on end-use — FIBC tapes usually need higher tenacity than sugar-sack tapes.

Do you supply a burst tester for sacks?

Burst is usually assessed via load-carrying tests on our UTM using inflated sacks or by dropping filled sacks. A dedicated burst-pressure rig is not part of our standard offer.

Which single machine covers most raffia QC?

A UTM with tape grips and film jaws is the anchor instrument — it runs tenacity, elongation, fabric tensile and seam strength across the whole product line.