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Bag Closing Thread Guide

Bag Closing Thread Information

About Bag Closing Thread

Our bag closing thread is made in the USA and designed to sew both food and non-food bags shut. This Bag Closing Thread Buying Guide helps customers get the right thread for their needs. Our approach is to help you decide if our thread is the right for you, and provide information about the sizes we sell.

Bag Closing Thread Uses - Use this thread with portable bag closers to sew bag ends shut.  It is a heavy duty, knot-free spun polyester made from long-staple polyester yarn. Use it for closing bags that have either food, grain, or non-food products. The thread complies with FDA standards 21-CFR-177.1630(f), 21-CFR-177.2800 and 21-CFR-178.3570. It is approved for indirect food contact such as sewing bags shut. It is not approved for direct food contact via filters or anything else that would put it directly in contact with food. Putting oil, lubricants, or sewing machine oil on the thread voids compliance with FDA regulations. Its usefulness is not limited to bag closing. It works great in any application that needs a strong, inexpensive, spun polyester thread.

Cone Sizes - Our bag closing thread on 8-ounce, 5-pound, and 20-poumd cones. The 8-ounce cones are used with portable bag closers and are available as individual cones or cases of 32 cones. The 5-pound and 20-pound cones are for larger fixed-position machines and are sold as 40 Pound cases.

Bag Closing Thread Specifications

Thread Size Specifications - Bag closing thread comes in 4-ply and 5-ply thicknesses.

4-ply (12/4)
Average Strength: 19 Lbs. (8.6 kg)
Average Yards per Pound: 2,075
Stretch Before Breaking: 17%

5-ply (12/5)
Average Strength: 24 Lbs. (10.9 kg)
Average Yards per Pound: 1,655
Stretch Before Breaking: 17%

The Thread Exchange, Inc.

Machine Needles - Over 2,000 Groz-Beckert and Schmetz selections.

Needle Buying Guide
Needles

  • Find the needles you need in one place.

  • Needle to Machine Reference.

  • Sequenced needle systems for harder to find needles.

  • Thread by needle size.

Accessories - To make sewing easier.

Accessories
Accessories

We have a growing selection of notions and accessories that make sewing easier. They include thread cone holders, thread sock. elastic tubing, scissors and shears, tape measures, and tool kits and cutters.

Nylon Thread Nylon Thread Polyester Thread Polyester Thread Robison-Anton thread Robison-Anton Machine Needles Kevlar (tm) Thread Cotton Thread Monofilament Thread

Nylon Thread - Ten Sizes - Over 100 colors in some sizes.

Nylon Thread
Nylon Thread

  • Strong, durable, and easy to use.

  • Great for fabric, leather, canvas and vinyl.

  • Use up to size 69 in most home sewing machines.

  • Buy what you need - Single small spools, large spools and cases.

Polyester Thread - Nine Sizes - Great for outdoor use.

Polyester Thread
Polyester Thread

  • Looks and feels like nylon thread with comparable strength, durability, and ease of use.

  • UV resistant - Great for fabric, leather, canvas and vinyl.

  • Use up to size 69 in most home sewing machines.

  • Buy what you need - Single small spools, large spools and cases.

Robison-Anton - The full line of R/A 40-Weight embroidery thread.

The Robison-Anton Store
Robison-Anton Thread

  • Over 400 colors in polyester, and over 370 colors in rayon.

  • King spools and mini-kings.

  • Color cards.

  • Color conversion charts to match to other brands.

Kevlar (TM) Thread - Withstands temperatures up to 800F.

Kevlar Thread
Kevlar Thread

  • Does not melt.

  • About 2.5 times stronger than nylon and polyester.

  • Low stretch at 2%.

  • Buy what you need - Single spools, large and smaller - or cases.

Bobbins - Prewound - Save time with pre-loaded bobbins.

Bobbins
Prewound Bobbins

  • Full-gross (144), half-gross (72), and packs of 12 for smaller jobs.

  • Styles A (Class 15), G, L, M, and U - Other styles on closeout.

  • Wide selection of half-price bobbins.

  • Find the right bobbin for your machine.

Monofilament Thread - Also called invisible nylon thread.

Monofilament Thread
Monofilament Thread

  • Similar texture to fishing line, but thinner.

  • Comes in 9 sizes from ultra-thin size .004 to sturdy-size .012.

  • Small spools in sizes .005 to .012.

  • 1.5 Lb. canisters in all sizes - Case quantities available.

Cotton Thread - The full line of Mettler Silk-Finish cotton and Aurifil closeouts.

Mettler Cotton - All
Cotton Thread

  • Mettler cotton from thinnest to thickest in 60, 50, 40, and 28-weights.

  • Aurifil cotton closeouts at 35% off.

  • Mettler and Aurifil are made from 100% long staple Egyptian cotton fibers.

  • The lower the thread weight number, the thicker the thread.

Sewing and Serger Thread - Spun polyester, poly-core, silk closeout and more.

Sewing and Serger Thread
Sewing and Serger Thread

  • Tex 27 Maxi-Lock - Over 90 solid and variegated colors on 3000-Yd spools.

  • Excell - Same as Maxi-Lock on 6000-Yd spools - Around 12 colors.

  • Maxi-Lock Stretch - High elasticity thread in over 35 colors.

  • Closeouts in spun polyester, poly-core silk, and more.

Waxed Thread - For hand sewing. Most machines cannot handle waxed thread. Check owners manual.

Waxed Thread
Waxed Thread

  • Waxing makes thread stiffer, stronger, and more water repellent.

  • Great for leather, canvas, vinyl, and heavy fabrics.

  • 70-Yd tubes from Maine Thread in 6 sizes - Over 36 colors.

  • Closeout - Nylon coils, and waxed polyester-linen tubes.

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