Why the Carton Belongs in the Bag Spec

Custom canvas wine carriers often start as a branding project: choose the natural canvas, place the bakery logo, approve the handle style, and push for the best unit price. That is only half the procurement job. The shipping carton decides how the bags are folded, where pressure hits the logo, whether handles arrive flattened, how dividers hold shape, how many pieces land in each receiving unit, and how much space the shipment uses. A loose sample can look polished, then bulk cartons can still arrive with creased front panels, rubbed ink, flattened gussets, crushed dividers, or carton counts that do not match the warehouse plan.

For artisan bakeries, these carriers usually support visible, time-sensitive programs: wine and bread pairings, olive oil and focaccia sets, local cider gifts, syrup bottles, vinegar, holiday hampers, wine club pick-up days, and corporate gifting. When packing is wrong, the problem appears in the back room at the worst moment. Staff may need to re-sort store versions, steam creased bags, discard abraded logos, or repack inventory that should have been ready for the counter.

The better approach is simple: quote the bag and carton together. Your RFQ should ask for finished bag dimensions, bottle-fit target, folding method, printed-face protection, pieces per carton, carton L x W x H, gross weight, net weight, estimated CBM, board grade, carton marks, and pallet plan when relevant. That makes supplier quotes easier to compare. A low FOB unit price is not much of a saving if the carton cube is high, the fill count is low, the board crushes in storage, or receiving teams spend extra labor sorting mixed artwork.

  • Treat the export or master carton as part of the product specification, not a warehouse afterthought.
  • Compare unit cost, print setup, packing labor, carton data, gross weight, and CBM together.
  • Use the same approved bottle dimensions for pattern work, loaded testing, carton planning, and store trials.
  • Freeze carton count, fold method, carton marks, and carton dimensions before mass packing starts.
  • Keep the approved carton plan inside the tech pack so reorders do not drift in freight cost or receiving format.

Start With Bottle Data, Not Artwork

The first technical question is not logo size. It is bottle shape. A 750 ml Bordeaux bottle, Burgundy bottle, sparkling cider bottle, olive oil bottle, syrup bottle, and vinegar bottle may all belong in a bakery gift program, but they do not behave the same inside a canvas carrier. Height, shoulder curve, base diameter, closure height, and center of gravity all affect gusset width, handle drop, divider height, and whether the loaded bag stands upright on a counter.

Procurement should send measured bottle data in millimeters and filled weight in grams. Include total height from base to closure top, base diameter, widest shoulder or body diameter, closure height, and filled weight. If the program includes multiple bottles, identify the largest and smallest references. The largest bottle controls stress and fit. The smallest bottle controls presentation. A carrier built for a broad olive oil bottle may make a shorter syrup bottle disappear too deeply, which can make a premium gift look unfinished.

Bakery sets add another layer. Some carriers hold a single bottle only. Others carry a bottle plus biscotti box, jam jar, pastry sleeve, bread care card, kraft insert, tissue, or paper filler. These items can push into side seams, distort the print face, or change how the bottom sits. Tell the supplier whether carriers ship empty to stores, whether bakery staff fill them at counter level, or whether a third party assembles finished gift sets before delivery.

  • Measure total bottle height, maximum diameter, shoulder diameter, closure height, and filled weight for every intended bottle.
  • Name the primary bottle and secondary bottles so one format does not dominate the entire design.
  • For two-bottle carriers, define divider height, divider width, bottom attachment, and top stabilization if required.
  • State whether the carrier must also fit jars, pastry boxes, bottle cards, paper filler, or retail inserts.
  • Check loaded upright stability on a flat counter because tipping bags slow down store teams.
  • Do not approve size from an empty sample only; the useful standard is loaded fit with the approved bottle.

Choose Canvas by Use, Not Just Hand Feel

For reusable bakery bottle carriers, 10 oz to 12 oz cotton canvas is often the practical middle range, roughly 340 to 410 GSM depending on weave and finishing. It gives structure around a filled glass bottle while still printing well and folding into cartons without excessive bulk. Lighter canvas can reduce cost and shipping weight, but it may collapse around the bottle, wrinkle hard, and show handle stress quickly. Heavier canvas can feel premium, yet it may add sewing bulk, stronger fold memory, higher carton volume, and more risk of needle damage at thick seams.

Do not treat ounces and GSM as casual synonyms. Ounces are common in canvas sourcing language, while GSM is easier to verify through fabric weight checks. The purchase order should state both the target and tolerance, for example 12 oz canvas, approximately 400 GSM, with an agreed acceptable range before cutting. If the supplier cannot confirm GSM control, ask how fabric weight is checked. On repeat programs, fabric drift can change print color, handle stiffness, fold thickness, and carton count.

Finish deserves the same attention. Natural unbleached canvas may show seed flecks, slubs, and warm shade movement that fits an artisan bakery look. Bleached canvas reads cleaner, but it can show dust and handling marks more easily. Dyed canvas can deliver stronger brand color, but it adds lab dip approval, dye-lot control, colorfastness discussion, and often higher MOQ. Construction ties it together: reinforced side seams, stable gussets, a balanced bottom, and solid handle attachment matter more than fabric weight alone.

  • 8 oz to 9 oz canvas: lower-cost promotional option, better for empty or light-use presentation than reusable filled-bottle programs.
  • 10 oz to 12 oz canvas: balanced choice for bakery wine carriers, olive oil carriers, cider gifts, and repeat retail use.
  • 14 oz canvas and above: premium hand feel, but confirm sewing bulk, fold lines, carton cube, and packing stiffness.
  • Natural canvas: approve shade range, visible flecks, print contrast, and acceptable slub level.
  • Dyed canvas: request lab dip, dye-lot MOQ, shade tolerance, and colorfastness expectations before launch dates are promised.
  • Construction: specify reinforced handles, stable bottom, secure divider, and consistent stitch quality instead of relying on fabric weight alone.

Engineer Handles, Dividers, and Load Points

A wine carrier is not just a branded tote in a narrow shape. It is load-bearing packaging for glass, liquid, or both. The stress points are handles, top hem, side seams, bottom seams, gusset corners, and divider attachment. A filled 750 ml glass bottle commonly weighs about 1.2 kg to 1.5 kg depending on glass weight and liquid density. A two-bottle carrier can exceed 3 kg after the carrier and any gift insert are added. The supplier should design around the actual filled weight, then include a practical safety margin for lifting, short-distance carrying, and customer reuse.

Handle drop changes the way the carrier works. A short handle may look tidy on a display, but it can be awkward if the bottle neck protrudes. A long handle is easier to carry, but it may swing, tip, or pack poorly. Handle width also matters; narrow self-fabric straps can twist under load. Reinforcement should be named, visible, and measurable: box-X stitching, bar tacks, double-layer top hem, webbing inserted into the seam, or another approved method. Decorative stitching is not a substitute for load-bearing construction.

For two-bottle carriers, the divider is a functional part. It should prevent bottle-to-bottle contact during normal lifting, light tilting, and carton handling. A low divider can pass an empty inspection but fail as soon as staff pick up the loaded bag. Many programs need the divider to reach at least 60-70% of the bottle body height, although the correct height depends on bottle profile. Test with the real bottles whenever possible.

  • Ask for the maximum filled weight per bottle and design the carrier around the heaviest approved configuration.
  • Specify handle width, handle drop, handle material, seam insertion depth, and reinforcement method.
  • Request loaded lift testing with the actual bottle weight or a documented equivalent weight.
  • Check whether handles deform the front print or crush the bag when folded into the carton.
  • For two-bottle carriers, test bottle contact by lifting, setting down, and lightly tilting the loaded carrier.
  • Reject samples with skipped stitches, narrow seam allowance, loose bar tacks, or stress whitening around needle holes.

Match Print Method to Brand and Volume

Screen printing is usually the right starting point for custom canvas wine carriers with a solid bakery logo, one-color seasonal message, or simple co-branded winery mark. It offers predictable bulk pricing and a natural look on cotton canvas when ink coverage and curing are controlled. A front print on a single-bottle carrier may sit within a 90 mm to 140 mm wide area, but the final size should be checked against bag width, seam locations, fold direction, and the way the bottle pushes the fabric outward.

Color approval must happen on the production fabric, not only on a digital proof or coated-paper PMS reference. Natural canvas has texture and warm undertones, so ink will not read exactly like it does on paper. Ask for a strike-off using the final canvas, final ink, final print size, and similar curing conditions. Dark dyed canvas may need an underbase or additional ink passes for light artwork, which can change hand feel and cost. Fine lines on natural canvas may break across the weave if the art is too delicate.

Other branding methods have their place. Heat transfer can work for gradients, short seasonal runs, detailed art, or many store versions. The tradeoff is a different surface feel and possible edge visibility. Embroidery can look premium for wine clubs or corporate gifts, but test for puckering, backing, stitch count cost, and comfort against the bottle. Woven labels suit subtle reusable branding, yet label MOQ and sewing placement should be quoted separately.

  • Screen print: best for one to three solid colors, repeat orders, logo clarity, and stable bulk pricing.
  • Heat transfer: useful for short runs, gradients, detailed artwork, or many seasonal versions.
  • Embroidery: premium option, but confirm puckering, backing, stitch count cost, and bottle-side comfort.
  • Woven label: clean reusable branding, but check label MOQ, sewing placement, and color match.
  • Strike-off approval: require final fabric, final ink, final size, and dry-rub review before bulk printing.
  • Placement control: set tolerance from fixed points and keep main artwork away from fold lines and high-pressure carton areas.

Control MOQ, Versions, and SKU Mix

Bakery buyers often want one carrier construction with several versions: flagship logo, neighborhood store name, holiday artwork, wine partner co-branding, corporate gift logo, or event message. A supplier may be able to combine the sewing quantity when the base fabric, size, handles, and construction stay the same. That does not automatically mean every artwork version shares the same economics. Printing, labels, carton marks, and packing separation can still create separate minimums and charges.

MOQ can come from several places: fabric, cutting, sewing setup, dyeing, printing, transfer sheets, woven labels, cartons, barcode labels, and packing method. Natural stock canvas often provides the most flexibility. Custom dyed canvas may require a dye lot larger than the bakery’s seasonal need. Screen printing creates setup charges by color and artwork. Heat transfer may reduce version MOQ but increase unit cost. Store-level cartons or mixed assortments can also add packing time even when the bag itself is unchanged.

Handle version control like packaging procurement, not like a loose promotional order. Each version needs an artwork code, revision date, quantity, print colors, packing method, carton mark, destination, and over/under tolerance. The common failure is not always total quantity. It is mix accuracy: too many holiday units, too few store-logo units, or mixed cartons that receiving teams cannot process quickly.

  • Separate base bag MOQ from print-version MOQ, dyed-fabric MOQ, packing MOQ, label MOQ, and carton-mark MOQ.
  • Use one fabric color and one construction when artwork variety matters more than material variation.
  • Create a version matrix with artwork code, quantity, print method, colors, carton marks, barcode needs, and destination.
  • Freeze artwork and quantities before screens, transfers, labels, or carton marks are made.
  • State allowed overproduction or underproduction by version, not only for the total purchase order.
  • Avoid mixed cartons unless the receiving team has a clear pick list and carton label system.

Plan Carton Size, Cube, and Packing Method

Carton planning starts with the approved fold. Canvas wine carriers can be packed flat, folded once, bundled with paper bands, wrapped in tissue, individually polybagged, or packed by store assortment. Each method changes presentation, carton footprint, labor cost, gross weight, and CBM. Flat packing often protects the front panel best, but it can require a larger carton. Tight folding may reduce volume, yet it can leave permanent creases, especially on heavier canvas or across a printed logo.

The master carton should match the shipment route. Domestic replenishment with limited stacking may not need the same carton as export freight, palletized storage, seasonal warehousing, or loose-loaded shipments. For export or stacked storage, a 5-ply export carton is usually safer than a thin 3-ply carton. If your warehouse has standards, put them in the RFQ: board grade, flute, burst or edge-crush target when available, maximum carton weight, carton size limits, and palletization rules. Oversized cartons are hard to lift and easy to crush. Too many small cartons increase receiving labor.

Canvas bags are often more volume-sensitive than weight-sensitive. A carton can be light but bulky, so CBM may drive ocean freight and chargeable volume may drive courier or air freight. Compare suppliers on carton efficiency, not only bag unit price. Request carton L x W x H in centimeters, pieces per carton, net weight, gross weight, estimated CBM, cartons per pallet, and whether dimensions are estimated or confirmed. Freight booked from rough estimates can become expensive after mass packing.

  • Flat pack: best for front-panel presentation and fewer logo creases, but often increases carton footprint.
  • Controlled single fold: acceptable when the fold line avoids the main print, handle stress, and divider distortion.
  • Bundle pack: efficient for wholesale handling, but bands must not dent canvas or abrade ink.
  • Individual polybag: improves dust control and SKU distribution but adds plastic, labor, carton volume, and disposal concerns.
  • Plastic-free pack: supports sustainability goals, but confirm moisture, dust, and abrasion protection.
  • Carton data: require L x W x H, pieces per carton, gross weight, net weight, CBM, board grade, and carton marks before freight booking.

Build a Sample and Approval Sequence

A loose pre-production sample is not enough when carton condition matters. The approval process should confirm material, print, bottle fit, loaded handling, folding, and packed-carton presentation. A carrier sent in a courier pouch proves little about how hundreds or thousands of units will behave when compressed, stacked, handled, and delivered. For launch programs, approve both the carrier and its packing method before production moves into final packing.

A practical sequence starts with material: canvas swatch, GSM target, shade range, and dyed lab dip if applicable. Then move to artwork proof and print strike-off. After that, request a fit sample or pre-production sample made with final construction. Test real bottles rather than estimated dimensions. Check whether the bag stands upright, whether handles feel balanced, whether the front print distorts, and whether dividers prevent contact. For two-bottle designs, photos should show both bottles loaded and the divider position clearly.

Before mass packing, ask for an open-carton photo or packing mock-up. It should show fold direction, print orientation, bundle count, tissue or slip sheet use, carton fill level, top-layer condition, bottom-layer condition, and carton marks. For high-value or date-critical programs, one approved packed sample carton gives far better evidence than loose samples alone. Keep one sealed pre-production sample for inspection reference and one working sample for store packing trials.

  • Approve canvas swatch and shade range before print color approval if brand tone is important.
  • Approve print strike-off on final canvas before bulk printing or heat transfer production.
  • Test the sample with the actual bottle or documented equivalent weight, not an empty carrier only.
  • Photograph front, back, gusset, bottom, handle reinforcement, divider, print close-up, and loaded standing position.
  • Approve fold direction, printed-face protection, bundle count, carton fill, and carton marks before mass packing.
  • Store the approved sample, measurement sheet, artwork file, and carton plan together for reorders.

Quote Landed Cost With Real Packing Data

A cheap unit price can hide expensive packing. Canvas weight, print method, setup charges, packing materials, carton count, volume, gross weight, inland freight, inspection, export handling, duties, and local delivery all affect the final cost per usable carrier. If one supplier quotes a lower bag price but uses inefficient oversized cartons, freight can erase the saving. If another supplier uses stronger packing and fewer units arrive damaged, the higher unit price may be the better procurement decision.

Ask the supplier to separate base bag cost, print cost, setup charges, sample charges, packing charges, label charges, carton cost if charged separately, and palletization if needed. Incoterms should be clear. EXW means the buyer must estimate inland pickup and export handling. FOB requires the port name and included documentation. CIF is not delivered to the bakery warehouse. DDP or delivered quotes should state whether duties, taxes, remote delivery, appointment fees, and liftgate charges are included.

For multi-location bakery groups, landed cost also depends on version handling. Cartons separated by store or SKU improve receiving control but may increase packing labor and carton count. Mixed cartons may look efficient at origin yet create sorting work at the warehouse. The quote should show version-level quantities, carton marks, barcode labels if needed, and whether the supplier can pack by store allocation. The useful number is cost per usable delivered bag, not just the supplier’s unit price.

  • Request itemized pricing for base bag, print, setup, sample, packing, labels, cartons, and palletization.
  • Request logistics data: carton dimensions, pieces per carton, net weight, gross weight, CBM, and cartons per pallet.
  • Compare suppliers using the same Incoterms, carton count, packing method, inspection plan, and delivery destination.
  • Ask how unit price changes if artwork versions, individual packing, store-level sorting, or carton marks increase.
  • Confirm whether quoted carton dimensions are estimated, pre-production confirmed, or final mass-packing data.
  • Calculate cost per usable delivered carrier after freight, receiving labor, reject risk, and version-control complexity.

Set QC Standards and AQL Priorities

Inspection should start with function and safety. A canvas wine carrier must hold weight, fit the approved bottle, keep two bottles from direct contact when a divider is specified, and present cleanly at retail. Critical defects include broken handles, open seams, wrong artwork, unsafe bottle fit, severe contamination, or materially wrong carton count. Major defects include weak dividers, print placement outside tolerance, poor curing, heavy staining, crushed presentation, or the wrong packing method. Minor defects may include small natural cotton flecks or slight shade variation if those were approved in advance.

Measurement must be objective. Finished width, height, gusset, bottom, handle drop, divider height, and print placement should be measured from specified reference points. A practical tolerance might be +/-5 mm on width and gusset, +/-8 mm on height, and +/-3-5 mm on simple logo placement, but the exact tolerance should match the design and factory capability. Natural canvas texture is not a reason to accept crooked artwork, poor curing, or incorrect version printing.

Carton inspection is part of product inspection. Inspectors should open cartons, count pieces, verify fold direction, check top and bottom layers for abrasion, confirm printed-face protection, measure carton dimensions, weigh cartons when required, and verify carton marks against the packing list. Cartons should not be underfilled with large voids or overfilled until they bulge. Inspection photos should show loaded samples, measurement points, print close-ups, handle seams, divider function, and opened cartons.

  • Functional checks: loaded lift test, standing test, bottle insertion test, divider contact check, seam review, and handle reinforcement review.
  • Print checks: artwork version, color against strike-off, curing, dry rub, placement tolerance, missing ink, bleeding, and abrasion.
  • Dimension checks: width, height, gusset, bottom, handle drop, divider height, divider width, and print location.
  • Carton checks: board condition, tape adhesion, count, marks, gross weight, dimensions, crushing, and open-carton presentation.
  • AQL focus: treat broken handles, open seams, wrong artwork, unsafe bottle fit, and wrong carton count as critical issues.
  • Reporting requirement: include photos of loaded carriers, measurement tools, print close-ups, stress points, and opened cartons.

Specification comparison for buyers

Spec decisionProcurement-grade targetWhen it fitsBuyer risk to check
Canvas weight10 oz to 12 oz cotton canvas, approximately 340-410 GSM; agree fabric GSM tolerance before cuttingReusable filled-bottle carriers for bakery retail counters, wine pairings, olive oil gifts, cider, syrup, vinegar, and corporate giftingBelow about 270 GSM can collapse or wrinkle around glass; above about 475 GSM can add sewing bulk, fold memory, carton cube, and freight cost
Finished size toleranceTypical finished bag tolerance: +/-5 mm on width and gusset, +/-8 mm on height, +/-5 mm on handle drop when measured flatUseful for repeat programs where the same bottle and shelf presentation must remain consistent across storesLoose tolerances can cause bottles to sit too low, dividers to miss contact points, or carton packing counts to change
Bottle formatSingle-bottle carrier for fast gifting; two-bottle carrier with sewn divider and reinforced base for premium sets750 ml wine, 500-750 ml olive oil, 355-750 ml cider, syrup, vinegar, and holiday bottle bundlesDivider height should typically cover at least 60-70% of bottle body height; low dividers allow bottle-to-bottle impact
Handle constructionSelf-fabric or cotton webbing handles with box-X, bar tack, or reinforced top-seam insertion; specify loaded pull requirementFilled-bottle weight, retail staff handling, customer reuse, and short-distance local deliveryA visually neat handle can fail if seam allowance is narrow, stitch density is low, or reinforcement does not reach load-bearing fabric
Print methodScreen print for solid logos; heat transfer for short runs or many colors; embroidery only after puckering testBakery logos, co-branded wine partner artwork, holiday versions, and store-name programsPMS targets shift on natural cotton; approve color on final canvas, not only on coated-paper artwork proofs
Print placement toleranceDefine tolerance in millimeters from top edge, side seam, center line, pocket edge, or bottom fold; common target +/-3-5 mm for simple front printsNeeded when carriers are displayed front-facing or when several store versions must look uniformJudging by eye leads to disputes; placement across gussets or fold lines can look crooked after loading
Folding and print protectionFlat pack or controlled single fold with printed face protected by tissue, paper slip sheet, or approved face-to-face orientationMaintains bakery retail presentation and reduces creasing on logos, pockets, and dividersRandom folding can create permanent canvas crease lines, abrade ink, deform handles, and change carton dimensions
Master carton gradeExport master carton specified by board type, flute, burst or edge-crush target when available; 5-ply for international or stacked storagePalletized freight, distributor warehouses, seasonal inventory, and cartons stacked before launchGeneric weak cartons can crush top layers, distort carrier bases, and trigger receiving claims even if bags are sewn correctly
Carton data in quoteCarton L x W x H, pieces per carton, gross weight, net weight, estimated CBM, carton mark layout, and pallet count if usedLets buyers compare true landed cost and warehouse handling, not just FOB unit priceLow unit price may be offset by oversized cartons, low carton fill, high volume weight, or inconsistent carton counts

Buyer checklist before sampling

  1. Measure each bottle before RFQ: total height, base diameter, widest shoulder diameter, cap or cork height, filled weight, and whether the bottle is glass, PET, or metal.
  2. State the intended use: single bottle, two bottles, mixed bottle sizes, bottle plus pastry box, bottle plus jar, retail empty carrier, or carrier filled in store by bakery staff.
  3. Specify canvas weight in both oz and GSM, fabric composition, weave feel, natural or bleached shade, dyed color, organic/recycled requirement, and any certification documents needed.
  4. Define acceptable shade variation for natural or dyed canvas, including whether cotton seed flecks, slubs, and small weave irregularities are acceptable for the bakery brand look.
  5. Provide vector artwork, print size, color count, PMS targets, logo placement, version code, and whether artwork may cross seams, gussets, fold lines, pockets, or labels.
  6. Request a strike-off on the same canvas planned for bulk production and approve dry rub, light scratch, curing, and color appearance before mass printing.
  7. Specify handle material, handle width, handle drop, reinforcement method, stitch density target, and minimum loaded lift test based on the filled bottle weight plus safety margin.
  8. For two-bottle carriers, confirm divider height, divider width, bottom attachment, top attachment, and whether the divider prevents contact when the loaded bag is tilted.
  9. Set finished measurement tolerances for width, height, gusset, bottom, handle drop, divider height, divider width, and print placement from fixed reference points.
  10. Define packing method: flat packed, controlled single fold, bundled, paper wrapped, individually polybagged, plastic-free, packed by SKU, packed by store, or packed by mixed assortment.

Factory quote questions to send

  1. What canvas weight in oz and GSM is included, what GSM tolerance do you control, and is the fabric stock, custom woven, custom dyed, or subject to mill MOQ?
  2. What finished bag dimensions, gusset width, bottom size, divider height, and handle drop are quoted, and what maximum bottle diameter, bottle height, and filled weight are they designed to hold?
  3. What finished dimension tolerances are included for width, height, gusset, handle drop, divider placement, and print placement, and how will those measurements be taken?
  4. How are the handles reinforced: box-X, bar tack, webbing insertion, double-layer canvas, top hem reinforcement, or another method, and what loaded lift test can you perform?
  5. Which stitch type, stitch density range, seam allowance, and thread specification are planned for stress points such as handles, side seams, bottom seams, and divider attachment?
  6. Which print method is quoted, how many colors are included, what screen or setup charges apply, and will the strike-off be made on the final production canvas?
  7. What print placement tolerance is included, and will placement be measured from top edge, side seam, center line, pocket opening, gusset seam, or bottom fold?
  8. Can multiple bakery store logos, seasonal messages, or co-branded bottle graphics share one base bag MOQ if fabric, size, and construction stay identical?
  9. What are the separate MOQs for base fabric, dyed fabric, sewing, each print version, carton marks, barcode labels, and individual packing styles?
  10. What is the planned folding method, pieces per bundle, pieces per master carton, carton L x W x H, gross weight, net weight, and CBM per carton?

Quality-control points to confirm

  1. Canvas GSM tolerance should be agreed before cutting; a practical target is often +/-5% when the supplier has calibrated GSM measurement, but the purchase order should state the accepted range.
  2. Finished bag dimensions should be measured flat on a table and also checked loaded with the approved bottle size because an empty carrier can hide balance, gusset, and divider issues.
  3. Width, height, gusset, handle drop, divider height, and bottom dimensions should be measured from defined points; avoid subjective terms such as normal size or standard fit.
  4. Handle attachment should show clean box-X, bar tack, or reinforced seam stitching with no skipped stitches, loose threads, needle cuts, broken stitches, or narrow seam allowance at load points.
  5. Loaded lift testing should use the approved bottle weight or documented equivalent; test at least normal carrying position plus short static hold to reveal seam stress or handle tearing.
  6. Stitch density should be consistent across stress areas; buyers can request a target range such as 7-9 stitches per inch if compatible with fabric thickness and factory equipment.
  7. Print position tolerance should be defined in millimeters from fixed reference points; front-logo programs commonly need a tighter tolerance than side labels or internal marks.
  8. Ink curing should be checked by dry rub and light scratch/rub testing after drying, especially on textured natural canvas or dark dyed canvas where poor adhesion is visible.
  9. Print color should be compared to an approved strike-off under consistent lighting; allow reasonable variation caused by natural cotton shade only if documented before production.
  10. Two-bottle dividers must be sewn straight and high enough to prevent bottle-to-bottle contact when the loaded carrier is lifted, tilted slightly, or placed into a carton.