In woven sack production for cement, fertilizer and granular polymer packaging, Oriental Energy PPH T05 is converted on a single-stage tape extrusion line with a barrier screw of 30:1 to 34:1 L/D ratio and a flat die gap of 0.5–0.8 mm. The melt temperature is held between 210 °C and 250 °C, the water-bath quench is maintained at 25–35 °C, and the slit tape is oriented in a hot-air oven at 100–130 °C with a draw ratio of 1:5.5 to 1:6.5 before annealing at 100–120 °C on godet rolls. Formulation at the blending stage comprises 100 phr of PPH T05, 2.0–4.0 phr of white titanium dioxide masterbatch for opacity and thermal shielding, 4.0–8.0 phr of calcium carbonate masterbatch for tape stiffness and loom running stability, and 0.3–0.8 phr of polyolefin processing aid where split warp tapes exceed 2.5 mm width. The woven fabric is inspected under ISO 13934-1:2013 for tensile strength and ISO 7965-2:1993 for filled-sack drop resistance; EU REACH Article 33 verification applies at the 0.1 wt% SVHC threshold. Terminal products include 25 kg and 50 kg cement sacks, 10–50 kg fertilizer bags, and sacks for polymer granules, produced on circular looms with warp/weft densities from 10 × 10 to 12 × 12 tapes per inch. A converter-level risk exists when calcium carbonate addition exceeds 8.0 phr, because creel-side tape friction decreases below the target range and warp tension variability increases, producing shuttle streak defects on high-speed circular looms.

When 1300-Denier Weft Tape Is Drawn Above 1:6.8 on a Circular Loom, Which Stabiliser Package Maintains 85% Tensile Retention After 500 Hours of Xenon-Arc Exposure?

Extruding PPH T05 into FIBC body panels is performed with tape targeted at 1100–1800 den for warp and 1300 den for weft insertion, slit widths of 3.0–4.0 mm, and a draw ratio of 1:6.0–1:6.8 in a hot-air stretching oven at 105–135 °C. The formulation includes 2.5–5.0 phr of HALS/UV masterbatch, 3.0–5.0 phr of calcium carbonate masterbatch, and 0.2–0.5 phr of processing aid; hindered amine light stabiliser active content is maintained at 0.15–0.25 phr of the total compound. The woven fabric is produced on 6- or 8-shuttle circular looms with warp tension controlled at 25–35 cN per tape, then laminated or coated at 15–25 gsm on the inner surface to contain fine powders. Compliance is verified against ISO 21898:2004 for non-dangerous FIBCs and against the UN 13H2 or 13H3 design type when the container is intended for dangerous goods under ADR/RID; weathering retention is evaluated by xenon-arc exposure per ISO 4892-2:2013 method A or UV exposure per ASTM G154-16 cycle 1. Terminal products include 500–2,000 kg bulk containers for mineral fines, polymer granules, and chemical powders.

Process boundaries are narrow: draw ratio above 1:7.0 produces surface fibrillation on 1300 den weft tape, and the resulting transverse tear resistance falls below the level required for base-seam burst tests. Melt temperatures above 255 °C accelerate chain scission and shift the post-extrusion melt mass-flow rate upward by more than 0.5 g/10 min, reducing tape tenacity and increasing loom breaks during shuttle insertion. Filler masterbatch is pre-dried at 70–80 °C for 2 h when ambient relative humidity exceeds 60%, because free moisture expands at the die and forms pinholes in the oriented tape. Calcium stearate is limited to 0.5 phr where the fabric is subsequently coated, as migration to the tape surface reduces corona treatment efficiency and coating adhesion. Published data for this specific PPH T05 configuration under high-denier FIBC weathering is limited; each masterbatch supplier formulation must be validated on the target circular loom before safe working load certification.

Geotextile Flat Yarn Stabilisation Under UV1200 and 12-Month Soil Contact

Geotextile fabrics woven from PPH T05 slit tape are produced by extruding at 2.0–4.0 mm slit width, orienting at a draw ratio of 1:5.5–1:6.5, and weaving on projectile or rapier looms. A stabilization formulation contains 2.0–3.0 phr of carbon black masterbatch at 40% carbon black loading, 0.1–0.3 phr HALS additive, and 5.0–10.0 phr calcium carbonate masterbatch to control dimensional change under tension during installation. Fabric weight is maintained at 120–300 gsm to satisfy separation and stabilization requirements. Compliance is assessed under EN 13249:2016 for road construction geotextiles and ISO 10319:2015 wide-width tensile testing; long-term UV resistance is checked by 1200 h xenon-arc exposure. Terminal products include woven geotextiles for subgrade stabilization, erosion control mats, and ground cover fabrics in landfill and civil works. Tension control at the creel is critical because PPH T05 tape drawn at ratios above 1:6.5 has reduced elongation at break and can split during rapier loom insertion, especially below 10 °C workshop temperature.

Where round baler twine is produced for straw and hay baling, PPH T05 is extruded into 0.9–1.2 mm slit tape, quenched in a water bath at 25 °C, oriented at a draw ratio of 1:6.0, and twisted at 40–60 twists per metre; the formulation contains 1.5–2.5 phr UV masterbatch, 0.5–1.0 phr pigment masterbatch, and not more than 2.0 phr calcium stearate, while compliance is tested under ISO 4167:2006 and terminal products include high-density baler twine with linear density from 130 m/kg to 160 m/kg and knot strength above 250 N where required by round baler equipment.

Secondary Carpet Backing Woven from 0.9 mm Slit Tape Without a Post-Hot-Air Annealing Loop

For secondary carpet backing, PPH T05 is converted into 0.9–1.5 mm slit tape and oriented at 1:5.5–1:6.5 draw ratio, then woven directly into a backing fabric without a post-hot-air annealing loop. The compound comprises 10–15 phr calcium carbonate masterbatch, 0.1–0.3 phr coupling agent, and 0.2–0.5 phr processing aid to maintain tape stiffness and reduce lint during carpet tile cutting. Compliance is reviewed under ASTM D2646-18 and EU REACH; the fabric is evaluated for tensile and tear strength as a secondary backing. Terminal products include secondary backings for tufted carpet rolls, carpet tiles, and entrance mats. Filler addition above 15 phr can cause brittleness at the tape edge, generating slitter dust and loom debris, especially when regrind content is high; regrind is limited to 15–20 wt% unless proven stable on the target extrusion line.

If Coating Adhesion Falls Below 2.3 N/25 mm on Laminated Tarpaulin Tape, Corona Treatment Must Be Revalidated Before the Lamination Nip

Laminated tarpaulin base fabrics use PPH T05 slit tape at 2.0–3.5 mm width and a draw ratio of 1:6.0, woven into 10 × 10 or 12 × 12 tape-per-inch constructions. The substrate is then corona-treated to 40–44 dyn/cm and extrusion-coated with low-density polyethylene at 80–120 gsm per side at melt temperatures of 280–320 °C, with coating adhesion tested under ISO 2411:2017. The base formulation contains 2.0–4.0 phr UV masterbatch, 0.15–0.30 phr antioxidant, and, where flame retardancy is specified, 20–35 phr ammonium polyphosphate masterbatch; calcium stearate is limited to 0.5 phr because acidic residues from the flame-retardant system can reduce adhesion. Compliance is verified under EN 1875-3:1997 tear resistance and ISO 1421:2016 tensile for coated fabrics, along with EU REACH and RoHS restrictions. Terminal products include truck tarpaulins, scaffold sheets, lumber wraps, and temporary building covers. When adhesion falls below 2.3 N/25 mm, corona treatment and melt-web oxidation are revalidated before further coating; draw ratios above 1:7.0 are not used because tape fibrillation creates pinholes that lower hydrostatic resistance and accelerate delamination under cyclic wind load. Published data for this specific PPH T05 flame-retardant tarpaulin system is limited; lamination adhesion is revalidated after any masterbatch change or regrind addition above 20 wt%.