Woven sacks carry cement, fertiliser, sugar and grain, and a weak tape or seam shows up as a burst bag in a godown. Converters wanting woven sack raffia and tapes testing instruments manufacturers in India can purchase tape, fabric and sack-level testers from us, and our suppliers in India service covers extrusion lines and bag factories.
Testing follows the production sequence. At the tape extruder, the denier and tenacity machine and the stretch and draw ratio apparatus show whether tape is oriented properly. At the loom, the fabric tensile tester with wide strip grips and the GSM cutter with balance check weave strength and weight.
On converting lines, seam strength, laminate peel adhesion and slip coefficient decide whether a sack stacks and survives filling. Complete sacks and jumbo bags go to the drop and stack equipment and the FIBC top lift cyclic rig, while the UV chamber predicts outdoor storage life. Every stage has a corresponding instrument, so plants often build the lab in steps.
Last updated: November 2026
Tall hydraulic lifting frame that raises filled bulk bags by their loops to several times safe working load and cycles them while load and failure are logged. Used by FIBC manufacturers.
Tester with pneumatic grips and a denier balance that gives linear density, tenacity and elongation of single polypropylene raffia tapes. Used by tape extrusion plants and woven fabric mills.
Peel tester with a sliding table that pulls BOPP laminates and coatings off woven PP base at 180 degrees to record peel force. Used by laminators and printers of woven sacks.
Tensile fixture with wide jaws and a seam guide that pulls stitched strips of woven sacks and jumbo bags and calculates seam efficiency. Used by stitching lines and FIBC makers.
Roller bench with marking stamps and digital counter that measures marked tape lengths before and after stretching to find draw ratio. Used by raffia tape line operators to check orientation.
Fluorescent UV cabinet with UVA-340 lamps and condensation cycles that ages woven sack fabric strips so retained strength shows stabiliser performance. Used by sack manufacturers and resin suppliers.
Rotary 100 cm2 circular cutter with self healing pad and a 0.001 g balance that gives grams per square metre of PP woven and laminated fabric. Used by QC laboratories for roll checks.
Pneumatic drop platform and stack load fixture that drops filled PP woven sacks flat and on edge and loads them for days to check deformation. Used by sack makers and cement and fertiliser packers.
Benchtop tensile tester with wide rubber-lined jaws that pulls 50 mm strips of woven polypropylene fabric to measure warp and weft strength and elongation. Used by PP woven sack and FIBC makers.
Sled and inclined plane tester that records static and kinetic friction of PP woven sack surfaces to verify anti-slip treatment. Used by sack makers and packers who need stable pallet stacking.
| Function | Products | What to confirm |
|---|---|---|
| Tape and raffia | Raffia Tape Denier and Tenacity Testing Machine, Tape Stretch Ratio and Draw Ratio Measuring Apparatus | Gauge length, load range for fine tapes, denier balance resolution, grip type and the roller bench length for draw ratio. |
| Fabric and seam | Woven Sack Fabric Tensile Tester with Wide Strip Grips, Seam Strength Tester for Woven Sacks and Jumbo Bags, Woven Fabric GSM Cutter and Precision Balance Set | Jaw width, load capacity, speed range, cutter area (100 cm2) and balance readability. |
| Coating and slip | Sack Coating and Lamination Peel Adhesion Tester, Woven Sack Slip and Coefficient of Friction Tester | Peel angle and speed, sled weight and surface material, inclined plane angle range and the test standard. |
| Complete sack and bulk bag tests | Woven Sack Drop and Stack Test Equipment, FIBC Bulk Bag Top Lift Cyclic Loading Test Rig, UV Resistance Weathering Chamber for HDPE and PP Sacks | Maximum filled weight and drop height, FIBC safe working load and lift height, lamp type, panel temperature and condensation control. |
Flexible packaging instruments test thin films and pouches for seal strength, barrier and tear, with small forces and sensitive load cells. Woven sack instruments deal with heavy raffia tape, coarse fabric and filled sacks, so load capacities, jaw widths and drop heights are much larger, and bulk bag lifting is included. Plants making laminated PP bags may buy the peel tester here and film barrier tools from the flexible range.
See also: Flexible Packaging and Pouch Testing Instruments
The complete Woven Sack Raffia and Tapes Testing Instruments range (10 products), in alphabetical order:
Confirm the denier range of your tapes, usually 600 to 1500 for sacks, and the maximum break force. Check the grip type for slippery PP tape, the extension accuracy, and whether the denier is measured by cutting a fixed length and weighing on a balance. A printout of tenacity and elongation helps with line adjustments.
The rig should lift the filled bag to the safe working load multiplied by the test factor, and repeat the cycle automatically. Check bag size range, lifting height, hydraulic power, safety guarding, cycle counter and sling or loop attachment. Ask whether the rig supports top lift and cross corner tests, since customer requirements differ.
Wide strip grips are needed because woven fabric is tested as a 50 mm or wider strip. Confirm load capacity, grip faces that avoid slipping and crushing, crosshead speed, extension measurement and the software that reports warp and weft strength separately. A pneumatic grip option reduces operator variation.
HDPE and PP woven sack manufacturers, FIBC and jumbo bag makers, raffia tape extruders, cement and fertiliser companies that audit sack suppliers, polymer processing labs and export packaging houses purchase this range. A converter typically starts with tape tenacity, fabric tensile and GSM tests, then adds seam, slip and drop equipment when major cement or fertiliser customers set bag performance specifications.
Yes. We manufacture the machines and supply to sack plants in India and overseas. Mention the tape deniers, sack sizes and filled weights, and we will confirm models and packing.
Draw ratio is the factor by which extruded tape is stretched to align polymer chains. It is measured by comparing marked lengths before and after stretching. A correct ratio gives the strength and low elongation needed from raffia tape.
Sacks that are too slippery slide off pallets, while sacks with too much friction are difficult to stack and feed. The slip tester measures static and kinetic friction so converters can adjust coating or surface finish.
A filled sack is placed on a pneumatic release platform and dropped from a set height onto a hard floor in specified orientations. The sack is then checked for seam split or leakage. The result helps buyers confirm bag strength before dispatch.
Adjustable platforms and stacking fixtures are provided within the stated size range. Specify the smallest and largest sack you fill, along with the heaviest filled weight, and we will confirm the equipment fits.
As established manufacturers and suppliers for tender requirements from India, we undertake civil laboratory and industrial testing tenders as well as bulk and OEM supply of mechanical engineering and testing laboratory equipment. Please forward your tender specifications and our team will prepare a detailed quotation for Woven Sack Raffia and Tapes Testing Instruments.
Send us your equipment list or tender specification. We quote against IS, BS, EN, ASTM and AASHTO standards and ship to 90+ countries.
