Polyester Bag Closing Thread Built For The Heavier Bags

TP-308 and TP-312 are both 3-ply, but TP-308 holds 25 kg strength against TP-312's 20 kg. TP-412 moves up to 4-ply at 25 kg strength. Heavier or rougher bags usually call for TP-412. Lighter loads can often get away with TP-312 at a lower cost.

Polyester generally carries more raw tensile strength and holds up better under abrasion, which is why it's the common choice for jute and heavier 50 kg-plus sacks. Polypropylene is lighter and handles moisture well, suiting rice, fertiliser and lighter woven sacks. Tell us your bag weight and material and we'll say which one actually fits.

Virgin fibre is polyester made from new material rather than reprocessed or regrind stock. It holds strength more consistently from cone to cone, which matters most on long production runs where a sudden weak batch causes real downtime. Our polyester range is virgin fibre throughout, not recycled.

The first number is the ply count. The second is the yarn count, where a higher count number means a finer, thinner thread at that ply, not thicker. So 3/15 is lighter than 3/10, despite both being 3-ply. Tell us your bag weight if you're unsure which count you need.

TP-308 and TP-412 come in 1600, 1830 or 2000 metre cones. TP-312 comes in 1830 or 2000 metres. Jumbo cones run by weight instead, from 48 to 60 kilos per bag, across the count and ply combinations listed on this page.

Bulk polyester bag closing thread in the market commonly runs somewhere in the ₹190 to ₹200 per kilogram range, though this shifts with raw material cost and exact specification, so treat it as a rough guide rather than a quote. Tell us your article and quantity and we'll confirm current pricing directly.

Polyester sewing and bag closing thread generally falls under HSN 5401 or 5509 depending on the exact form, and GST on man-made filament yarn and sewing thread dropped to a flat 5 percent under the September 2025 reform, down from the earlier 12 to 18 percent band. Confirm the precise 8-digit code with your accountant, since classification can shift slightly by product form.

Since we manufacture rather than trade, a custom length or ply combination is a production decision we can generally make ourselves, though it may carry a minimum quantity. Tell us the exact specification and volume and we'll confirm what's realistic.

Our polyester range is white as standard. If you need a specific colour, tell us the quantity involved, since it usually means a dedicated production run rather than pulling from standard stock.

Yes, provided the ply and tension are matched to your machine correctly. Tell us your machine type alongside your bag weight, since the wrong tension setting on the right thread can look exactly like a thread problem when it isn't one.

It depends on your seam length and machine setting, but as a working figure, a 2000 metre TP-308 cone typically closes somewhere in the range of 1,800 to 2,200 standard heavy sacks at a 25mm seam. Send us your exact bag dimensions and we'll work out a proper number.

Standard articles ship from a single carton, so a small buyer isn't forced into a container-load order. Custom lengths, colours or jumbo cone combinations do carry a production minimum. Tell us the specification and we'll confirm the number.

Yes, and for a first order we'd suggest it. We send a sample cone so you can test tension and strength on your own machine before committing to a full run.

This is almost always a wax lubrication or tension control issue at the point of manufacture, not something wrong with your machine. It's the exact reason we control both ourselves, cone to cone, rather than leave it to whoever wound the batch before us.

Yes, nationwide. Being Kolkata based mainly means shorter transit for buyers in the East and North East, but we don't restrict polyester thread supply to any one region.

Keep it dry and out of direct sunlight, in a proper godown rather than stacked in the open. Polyester holds up well in storage compared to some other materials, but prolonged damp conditions can still affect the cone's outer layers over a long stockpile period.

Yes. A lot of our regular buyers run both, polyester for their jute lines and polypropylene for their woven PP lines, and order both together rather than splitting it across two purchase orders and two deliveries.

Our standard white polyester range holds colour well under normal storage and handling conditions. If your process involves anything unusual, heavy sun exposure during transit, for instance, tell us and we'll flag anything worth knowing before you commit to a large order.

Generally yes, though older machines sometimes need a tension recalibration for a different ply than they were last running. If you're switching articles on an existing machine, mention that when you order and we'll talk you through what to check before your first full run.

Polyester resists moisture better than some natural fibres, but it isn't fully waterproof in the way a plastic film is. For sacks that face genuinely wet handling or storage conditions, tell us the exact scenario and we'll say honestly whether polyester or a different material fits better, rather than oversell what the thread can handle.

Once there's a trading history and predictable order pattern, that's a fair conversation to have. First orders are quoted on standard terms, but tell us if you're planning recurring volume and we'll factor that into how we price and prioritise your account going forward.