How to Approve Bulk Fabric Lots Before Cutting Starts

Why fabric lot approval matters

A bulk fabric lot can differ from the approved sample in shade, surface character, usable width, weight, or dimensional stability. If those differences reach cutting, the consequences can include panels that do not match, garment measurements that shift after washing, and fabric waste from late sorting. Approve the lot against documented criteria before spreading begins, not by relying on a single swatch or a supplier’s visual judgment.

Set the approval reference

Before bulk fabric arrives, gather the signed fabric swatch or lab dip, approved garment sample, purchase order, fabric specification, and any wash or finishing instructions. Confirm that the documents identify the same color, construction, composition, finish, and intended garment. Record the reference version and approval date so the buyer, mill, and garment factory are comparing against one standard.

For a garment program involving clothing suppliers, make the responsibility for fabric approval explicit: identify who receives the lot, who performs tests, who can release it for cutting, and who must approve exceptions. A fabric approval is not the same as a garment sample approval; both need to be in place.

Use a practical lot-approval checklist

1. Verify identity and traceability

Check each roll label against the purchase order and packing list. Record the fabric code, color, lot or dye-batch number, roll number, length, and roll count. Confirm that rolls for one garment color are from an approved lot, or identify which rolls belong to each lot if the order has been split. Keep the roll list with the inspection record and cutting ticket.

Do not combine untraceable rolls simply because their face shade appears similar. If a roll label is missing or the lot identity conflicts with the documents, isolate it until the records are reconciled.

2. Compare shade under controlled conditions

Use a light booth or a consistent inspection area with agreed lighting. Compare the bulk fabric to the approved standard and check both roll-to-standard and roll-to-roll variation. For larger color programs, assign shade bands and mark each roll with its band. During cutting, keep garment panels within the same shade band and plan shade-sensitive components together.

Do not invent a universal numeric shade tolerance: the acceptable limit depends on color, fabric surface, garment design, and the buyer’s visual standard. Agree the pass/fail method before bulk, including whether adjacent panels may be cut from different rolls and whether visible garment areas require tighter matching. Keep a signed shade record or approved hanger swatch with the lot file.

3. Check hand feel and surface

Assess the fabric face and reverse against the approved sample. Check softness, stiffness, drape, brushing, coating, pile direction, texture, and finish as applicable. Inspect under consistent lighting and handle the fabric in the same way; a finish can feel different when the fabric is folded, stretched, or viewed from the opposite direction.

Record specific differences rather than writing only “not matching.” For example, note whether the bulk feels firmer, has a more pronounced surface, or shows a directional sheen. If the garment is washed or garment-dyed, review the approved post-process reference as well as the greige or finished fabric standard.

4. Measure weight and usable width

Take samples from representative rolls and measure fabric weight using the agreed test method and conditioning practice. Compare results with the purchase specification and approved standard. Measure usable width across the fabric, excluding selvedges where the specification requires it. Record the roll numbers, measured results, and instrument or method used.

A nominal weight alone does not establish that a lot will behave like the approved fabric. Construction, finish, and conditioning can affect the result, so assess weight alongside hand feel, width, and performance tests. If a result falls outside the agreed specification, hold the affected rolls and request a disposition before cutting.

5. Test shrinkage and relevant performance

Use the wash or test procedure that reflects the garment’s intended care instructions. Mark and measure test specimens before and after the agreed process, recording lengthwise and widthwise change. For fabrics with surface effects or special finishes, also check for distortion, skew, spirality, pilling, color change, or finish loss when those characteristics matter to the product.

The buyer and factory should agree the test method, sample conditioning, number of specimens, and acceptance limits in the fabric specification or technical pack. Do not apply a test result from one finish or wash route to a different bulk process without approval. If the garment will be washed after sewing, test the complete intended route where practical, since fabric-only results may not predict finished-garment behavior.

6. Inspect rolls and map defects

Inspect fabric using a consistent roll-inspection method and record defects by type and location. Look for holes, stains, slubs, broken yarns, barre, creases, finish marks, edge damage, and visible shade changes. Record usable length and any sections that must be excluded. Apply the buyer’s agreed fabric inspection system and defect rules; keep the method consistent across the lot.

A useful sequence on the factory floor is to verify roll identity, inspect the roll face while recording defects, take shade and test samples, then update the roll map before issuing fabric to spreading. Mark defects and unusable sections so the cutting team can avoid them. Common rework begins when rolls are inspected without recording their positions: defects are found during cutting, but the team cannot tell whether other rolls from the same batch share the issue.

At COCAIKW, we keep fabric identity and inspection notes linked to the cutting plan so the team can separate shade groups and avoid mixing rolls without a buyer-approved disposition.

Release, hold, or reject

Use a written disposition for every inspected lot:

• Release: Results meet the signed specification and approved visual standard; the responsible buyer or authorized representative signs the release.
• Hold: A result needs review, additional testing, or comparison with the reference; identify affected rolls and prevent them from entering cutting.
• Conditional release: The buyer records the accepted deviation, affected quantity, and any required segregation or garment-level control in writing.
• Reject or replace: The lot fails an agreed critical requirement and the parties document the replacement or corrective action.

For denim programs, including wholesale denim jackets, lot-level shade control is especially important when panels meet across the front, sleeves, or yoke. Keep shade groups visible on the cutting ticket and check a representative cut panel before continuing the lay.

Keep the approval record with the order

The lot file should contain the signed reference, fabric specification, roll and lot list, shade-band decisions, test results, defect maps, disposition, and the name and date of the approver. Link the record to the cutting ticket and retain the approved swatch. When working with custom clothing manufacturers, confirm that the same approval record is available to the fabric inspector, cutting supervisor, and buyer’s quality contact.

A controlled release protects more than fabric quality: it gives both sides a clear basis for resolving differences before fabric is converted into garment panels. The practical rule is simple: identify every roll, compare it with a shared standard, record deviations, and do not start cutting until the responsible approver has released the lot.

Sources

• UN Comtrade public trade statistics
• UN Comtrade public trade statistics
• UN Comtrade public trade statistics
• UN Comtrade public trade statistics
• UN Comtrade public trade statistics
• UN Comtrade public trade statistics
• UN Comtrade public trade statistics
• UN Comtrade public trade statistics
• UN Comtrade public trade statistics
• UN Comtrade public trade statistics

Frequently asked questions

What should I check before approving a bulk fabric lot for cutting?

Check roll identity and traceability, shade, hand feel and surface, weight, usable width, relevant performance tests, and roll defects before approving the lot for cutting. Compare the fabric with the signed reference and purchase specification, and record roll numbers, results, and any deviations. The approval record should identify the lot and include the release decision.

How should I compare bulk fabric shade with the approved sample?

Compare bulk fabric with the approved standard in a light booth or another consistent inspection area, checking both roll-to-standard and roll-to-roll variation. For larger color programs, assign shade bands and mark each roll. Agree the pass/fail method before bulk production; the article does not set a universal numeric shade tolerance.

What tests should I use to approve bulk fabric before cutting?

Use the agreed methods to measure fabric weight and usable width, and test dimensional change with the wash or test procedure that reflects the garment’s care instructions. Record lengthwise and widthwise change before and after the process. Agree the method, specimen conditioning, number of specimens, and acceptance limits in the fabric specification or technical pack.

What records should a fabric lot approval include before cutting starts?

Keep the signed reference, fabric specification, roll and lot list, shade-band decisions, test results, defect maps, disposition, and approver’s name and date in the lot file. Link it to the cutting ticket and retain the approved swatch. Do not start cutting until the responsible approver has released the lot.