Your Trusted Custom Mesh Bags Manufacturer

Mesh looks like the simplest thing in soft goods, and it is the category where specifications get skipped most often. A mesh bag is a hole size, a yarn count, a binding method and a load path, and if any one of those four is wrong the bag either stretches out of shape, tears at the seam, or fails the purpose it was bought for - letting air and water through while still holding weight. Here is how we specify it.

Specification options for mesh bags

Mesh is sold by weight and by aperture, and those two numbers are independent. A 120 gram per square metre warp-knit polyester with a 1.5 mm aperture behaves very differently from a 90 gram fabric with a 3 mm aperture, even though both are described as mesh. The grid below is the range we build across laundry, produce, sports and utility programmes.

Two details decide whether the bag survives. First, the binding: raw mesh edges fray and the fray runs, so every edge is captured in tape with the tape folded to the inside and stitched twice on heavy-duty builds. Second, the corner, which is where load concentrates - a bound and bartacked corner costs cents and removes the most common failure mode in the category.

How mesh bags are built

Cutting is the first difference from woven programmes. Mesh does not hold a clean cut edge and it shifts under the knife, so panels are cut with a hot knife or ultrasonically sealed on synthetics, or cut oversized and folded into the binding where a sewn edge is specified. On light mesh the cut edge is not a structural element at all; the tape is, which is why tape specification carries the load rating.

Seam type is chosen for the aperture. A plain lockstitch seam through open mesh concentrates stress on a handful of yarns, and under load those yarns tear in sequence like a zipper. We specify a bound or lapped seam so the load transfers into the tape rather than into the mesh yarns, and on heavy duty builds we add a webbing spine that runs the full perimeter.

Drawcord channels are a common failure point because they combine a fold, a seam and a moving cord. The channel is built from the same binding tape as the perimeter rather than from mesh, the entry is reinforced with a grommet or bartack, and the cord is specified by diameter and by core construction - a braided polyester core holds a toggle far better than a hollow one.

Ultrasonic welding is offered where the programme benefits from a seam-free look or where the buyer wants to avoid thread altogether. It works well on polyester and nylon mesh, gives a flat edge with no added tape weight, and requires a tooling set per profile. It is not suitable for coated grids, where the coating contaminates the horn.

Printing on mesh is limited by the aperture. Screen printing bridges the holes and blocks airflow, which defeats the point of the material, so branding is normally applied to a woven label, a silicone patch on the binding, a printed tape, or a transfer on a solid panel added to the design.

Cost drivers and MOQ for mesh bags

Fabric weight dominates the bill of materials, and it is worth understanding why: mesh is priced per kilogram, so a heavier fabric is both more material and less yield per kilo. Binding tape and drawcord are the second line, and corner reinforcement is the third. Labour is the hidden driver - a bag with eight bartacks costs noticeably more to make than one with none, and at this price point that difference is visible.

Programme terms: minimum order quantity is 500 units per style and colour, or 300 on a repeat programme. Sampling takes 6 to 10 working days, or 12 to 15 where welded tooling is developed. Mass production runs 35 to 50 days after sample approval. Sample fees of USD 50 to 150 are credited to the first bulk order, tooling is quoted at USD 300 to 2,500, quotes return in 24 to 48 hours, and standard terms are T/T 30/70 FOB Xiamen, with EXW, CIF and DDP available under Incoterms 2020.

Quality gates and acceptance criteria

Mesh fails by tearing in tension and by distortion in use, so testing is built around both. Grab tensile strength is run to ASTM D5034 on every fabric lot before cutting, and finished bags are loaded to rated weight and cycled to check for permanent distortion. A bag that returns to shape after load is acceptable; one that has grown is not.

• Seam strength to ISO 13934-1 on bound seams, tested in both warp and weft direction.
• Load cycling at rated weight for 1,000 cycles, then a dimensional check against the approved sample.
• Snag and abrasion behaviour to ISO 12945 on coated grids and heavier knits.
• Colour fastness to AATCC 8 wet and dry, and to washing under ISO 6330 for launderable programmes.
• Restricted substances to REACH (EC 1907/2006), California Proposition 65 and CPSIA where applicable.

Aperture consistency is inspected on the roll before cutting, because a mesh with variable hole size will look patchy on shelf even though it passes every strength test. Final random inspection runs to AQL 2.5 (Critical 0, Major 2.5, Minor 4.0) with AQL 1.5 available on request under ISO 2859-1.

Sustainability and certification options

Recycled content is the most requested upgrade in this category, and it needs to be specified correctly. GRS-certified polyester mesh requires documentation at every stage of the transaction, and the transaction certificate travels with the order rather than with the fabric mill. Our production team handles that chain and issues the certificate with the shipment documentation, which is what your retail buyer will ask for.

OEKO-TEX Standard 100 is available on most mesh and tape combinations and is worth requesting where the product touches skin or food. For produce and grocery programmes, food-contact declarations are prepared against FDA 21 CFR and EU 10/2011 for the materials in contact with produce, and the declaration covers print inks as well as fabric.

Ordering path