Define what 140gsm means before costing
For procurement, 140gsm should mean finished blanket fabric weight after dyeing, brushing, heat setting if used, relaxation and conditioning, not greige knit weight and not an unbrushed intermediate weight. A clear clause is: “Finished brushed polyester fleece fabric, 140gsm ±5% after conditioning for minimum 24 hours at 20 ±2°C and 65 ±5% RH, measured to ISO 3801 or ASTM D3776.” If the buyer only writes “140gsm”, suppliers may quote from greige weight, finished roll weight, or theoretical yarn consumption. Those are not equivalent.
A 140gsm brushed polyester airline blanket sits at the bottom end of reusable-feeling cabin fleece. It is lighter than the 160–210gsm blankets many long-haul buyers use, but it can still work for economy cabin, promotional rail, overnight coach, low-cost carrier buy-on-board and emergency uplift if the buyer accepts thinner loft and a shorter service life. Typical finished sizes are 100 x 150cm, 110 x 150cm, 120 x 150cm and 120 x 160cm. At 100 x 150cm, fabric mass is about 210g before cutting loss; at 120 x 160cm it is about 269g. Add individual wrap, paper band, barcode label and carton mass separately when modelling uplift weight.
Common fabric routes are polyester filament fleece or microfleece knitted in single jersey or light fleece constructions, then brushed on one or two faces. Yarn size varies by mill setup, but 75D to 150D polyester filament is a normal range for this weight. Lower denier improves softness but can generate more fine fly during raising if brushing and shearing are not controlled. Higher denier improves dimensional stability and edge resistance but can feel dry at 140gsm. The tender should state one-side brushed or two-side brushed. Two-side brushing improves touch but can increase lint and curl if the fabric is not relaxed before heat cutting.
The phrase 140gsm airline blankets heat cut edges is not a complete specification. The PO should define finished GSM tolerance, finished size tolerance, brushing face, colourfastness, edge condition, lint limit, compression packing, carton strength, labelling and inspection criteria. A practical starting point is finished fabric weight 140gsm ±5%, finished blanket size ±2cm after relaxation, shade to approved lab dip under D65 and TL84, and no visible shade side-to-side within one blanket. For weight and carton comparisons across cabin programmes, see travel airline blanket weight and packing.
Separate single-use, limited-reuse and laundry-reuse specs
Airline blanket tenders fail when all service models are treated as one product. A single-use or emergency uplift blanket can accept lower loft recovery, simpler labelling and looser long-term pilling requirements. A limited-reuse cabin blanket may need to survive 3–5 handling or light wash cycles without severe lint, curl or shrinkage. A laundry-reuse programme needs a different construction target, and 140gsm heat-cut fleece is often marginal unless the airline accepts visible ageing.
For single-use or short-sector issue, specify finished GSM, size, heat-cut safety, odour, packing hygiene and loose lint on unpacking. Wash testing may be unnecessary, but the lint limit after unpacking and the compression recovery time are still important because passengers see the blanket immediately. Cost pressure is highest in this category; heat-cut edges and paper belly bands usually make more sense than overlock sewing or fabric pouches.
For limited reuse, add one to three wash cycles before final approval. ISO 6330 can be used as a reference domestic wash method when no airline laundry protocol is supplied, but it should not be presented as proof of industrial laundry durability. After washing, inspect shrinkage, edge curl, pilling, shade change, lint transfer and label adhesion. At 140gsm, dimensional change within ±5% is usually achievable, but edge distortion can fail even when body shrinkage is acceptable.
For laundry-reuse, ask the airline laundry contractor for actual temperature, chemistry, drying method and cycle count. A low-GSM heat-cut fleece may not meet a 10–25 cycle expectation without unacceptable edge roll, lint or handfeel loss. If the programme needs repeated laundry, buyers should evaluate 160–210gsm fleece, overlocked edges, bound edges or a different blanket type. Care symbols should follow ISO 3758, and any claim such as “washable 20 cycles” should be tied to an agreed wash method, not a marketing line. The practical care conflicts are covered in blanket care washing guide.
Heat-cut edge mechanics and curl limits
Heat cutting seals polyester by melting the edge as a blade, hot wire or thermal cutter passes through the fabric. It removes overlock sewing, reduces labour, keeps the perimeter thin and avoids thread breaks. The trade-off is a narrow fused strip with different stiffness and shrink behaviour from the blanket body. On a 140gsm fleece, that fused strip may be only 1–3mm wide, but it can control how the edge lies after folding, compression and washing.
Curl usually has three sources. First, the knit structure naturally rolls toward one face if the fabric is not heat-set and relaxed before cutting. Second, excessive cutting temperature creates a hard bead that contracts as it cools and pulls the edge inward. Third, brushing imbalance makes one face bulkier than the other. Heavy one-side brushing can behave like a laminated strip: the raised face has more bulk and recovery while the flatter face restrains it.
Do not write only “no curling”. Define the acceptance method. For tender samples and shipment inspection, unpack the blanket, lay it flat without stretching for two hours at 20 ±2°C and 65 ±5% RH, then measure edge lift at eight points, 20cm from each corner and at centre points on the long edges. Avoid measuring the corner fold memory itself. A realistic bulk-production limit for 140gsm heat-cut fleece is maximum 15mm edge lift, with no continuous edge roll longer than 150mm. A tighter premium limit of 8–10mm normally requires better heat setting, slower cutting, or a sewn/ultrasonic edge.
Objective edge wording helps inspectors reject real failures without arguing over appearance: “Four sides heat cut and sealed; fused zone 1–3mm; no sharp bead; no browned edge; no brittle flakes; no fused lump over 3mm; no open unsealed edge over 20mm; no loose yarn tail over 5mm; corners square within 10mm.” If vacuum or heavy carton compression is used, test curl after decompression, not only after loose-packed approval samples.
Quantify lint instead of relying on opinion
Lint on a 140gsm brushed polyester blanket is created during raising, shearing, heat cutting, folding and handling. It is not only a factory housekeeping issue. Cabin crew notice fibre dust on dark uniforms, passengers see transfer on clothing, and laundry partners may complain about filter load. At this light weight, over-brushing to chase softness can weaken the surface and create loose microfibres. A slightly drier but stable hand can be better than a very fluffy approval sample that sheds in service.
A practical process route is brush, shear, de-dust, relax, inspect, cut, air blow-off or vacuum clean, then fold. Brushing depth should raise a uniform nap without thin tracks or rib lines. Shearing should remove long fly fibres rather than scalp the pile. Dark navy, charcoal and black need stricter lint control because contrast is visible; white and pale grey hide lint but show scorch marks and soil.
If the buyer uses a tape-lift method, write it as a method, not a casual comparison. One workable factory control method is: use 3M Scotch 600 clear tape or agreed equivalent, 25mm wide; apply a 100mm strip to a 10 x 10cm test area; press once forward and once back with a 2kg rubber-covered roller at about 300mm/min; dwell for 60 seconds; peel at 180° within 2 seconds; test five locations per blanket, including two centre-body areas, two edge-adjacent areas 30mm from the cut edge, and one fold line area. Inspect tape against a black card for pale blankets or white card for dark blankets under D65 light.
Acceptance can be numerical or by approved limit sample. A quantified starting point is no more than 20 visible loose fibres longer than 2mm per tape strip, no fibre clump larger than 3mm, and average result across five strips not worse than the approved pre-production limit sample. For dark colours, some buyers tighten the limit to 10–15 visible fibres per strip because transfer is more obvious. Keep a sealed master tape card from approved pre-production and use it for shipment comparison. Tape-lift is not a universal textile standard, so the PO should say it is an agreed buyer/supplier internal inspection method.
For lab work, pilling and surface change methods such as ISO 12945-2 or ASTM D3512 can support durability assessment, but they do not directly measure loose lint transfer. For reusable programmes, combine lint tape checks with one or three wash cycles and a dark-panel rub check. A simple dark-panel check is 10 back-and-forth rubs over black cotton fabric using consistent hand pressure, then grade visible fibre transfer against the approved limit sample.
Handfeel approval must be tied to a master sample
Handfeel cannot be controlled by adjectives alone. For 140gsm airline fleece, the approval file should include an agreed master sample with fabric face direction marked, brushing side noted, colour approved, GSM recorded and edge condition sealed. The production lot should be compared to this sample after conditioning, not directly off the cutting table while the fleece is warm or compressed.
Specify whether the blanket is single-side brushed, double-side brushed, or brushed face with flatter back. Also specify which face is packed outward if cabin presentation matters. A useful tolerance is: production handfeel not harsher, boardier or more open than the approved master sample when judged by buyer and supplier under the same conditioning; pile direction consistent within a carton; no obvious brushing streaks over 100mm; no unbrushed stripes; no glossy heat-set bands.
Lot-to-lot variation often comes from brushing depth, shearing height, dye lot, softener dosage and heat-setting temperature. More softener can improve first touch but may reduce absorbency of labels, affect heat-transfer adhesion, increase odour risk or change colourfastness. A neutral spec is better than vendor preference: approve the handfeel on a pre-production sample, then lock brushing route, finish recipe and finished GSM tolerance. If antimicrobial, anti-static or recycled-content claims are added, handfeel should be re-approved because finishes and fibre source can change the surface.
Carton packing and compression specifications
Packing should be specified with the same discipline as GSM. For a 100 x 150cm, 140gsm blanket, common airline export packing is 50 pieces per carton for individually polybagged blankets, or 80–100 pieces per carton for bulk-packed or paper-banded blankets, depending on fold size and carton burst strength. A plausible carton for 50 pieces is about 58 x 38 x 42cm; for 100 pieces, about 60 x 45 x 55cm. These dimensions must be confirmed after the approved fold and wrap are fixed because small fold changes move CBM quickly.
If compression is used, define the maximum compression time and recovery before inspection. A practical clause is: “Cartons may be mechanically compressed only to the approved carton height; compression dwell not over 24 hours before strapping; no vacuum compression unless approved separately; blankets to recover for 24 hours after unpacking before final loft and curl inspection.” For airfreight emergency uplift, shorter recovery may be needed, so test the actual scenario.
After unpacking, acceptable recovery should be measurable. For 140gsm fleece, do not expect heavy loft. Instead specify appearance: no permanent board-like compression, no stuck-together fused edges, no crease line causing fabric cracking, no edge curl beyond the approved limit after two hours flat relaxation, and folded blanket thickness within the approved pre-production packing sample range after 24 hours recovery. If the airline needs a thick hand on presentation, 140gsm may be the wrong weight.
Carton requirements should include 5-ply export carton where needed, carton gross weight target, carton drop and stacking expectations, desiccant if required by route, carton marks, SKU, PO, colour, size, quantity and barcode. If individual polybags are used, specify bag gauge, warning text, ventilation holes if required, and whether recycled-content bags are allowed. If paper belly bands are used, specify paper weight, band width, adhesive or tuck method, barcode readability and whether certification claims are required. Avoid implying FSC, recycled, compostable or plastic-free status unless documents are part of the order.
Performance and safety clauses for airline tenders
Colourfastness should be written by test method and grade. For washing, ISO 105-C06 grade 3–4 or better for shade change and staining is a practical starting point for many medium shades. For rubbing, ISO 105-X12 dry grade 4 and wet grade 3 are common baseline targets for medium shades; deep navy, black, burgundy and red may need trial confirmation because wet rubbing can fall below target without careful dyeing and after-treatment. If the blanket will touch light uniforms or pale seats, tighten wet rubbing only after lab dip and bulk trial evidence.
Flammability is a sourcing risk for cabin textiles. The buyer must confirm which aviation, cabin service or destination-market rule applies before tender release. Some US general textile programmes reference 16 CFR Part 1610 for wearing-apparel-type burn behaviour, but airline cabin requirements, internal airline policies, rail standards and regional regulations may differ. Do not copy furniture, children’s sleepwear or hotel FR clauses unless they are genuinely required. If flame-retardant treatment is specified, expect a price increase, possible handfeel change, shade shift, odour risk and additional testing lead time.
Restricted-substance language should match the sales market and claim level. A general clause may require no intentionally added banned azo colorants, phthalates where applicable to packaging or labels, and compliance with the buyer’s current RSL. If recycled polyester is requested, specify percentage by mass, yarn or fabric documentation, lot traceability and whether transaction documentation is required. Recycled polyester can add material cost and paperwork cost, and small lots may face shade or MOQ constraints.
Label and care requirements should be final before bulk cutting. A sewn label adds a sewing operation and can create a hard touch on a thin blanket. Heat-transfer labels reduce sewing but need wash and rub checks on brushed fleece. Printed paper belly bands are lowest cost but do not stay with the blanket after issue. For reusable or laundry programmes, care information should remain attached to the blanket or be controlled by the airline’s own laundry system.
AQL inspection and defect classification
Shipment inspection should reference ANSI/ASQ Z1.4 or ISO 2859-1, normal inspection, general inspection level II unless the buyer has a different sampling plan. A common starting point is AQL 0 for critical defects, 2.5 for major defects and 4.0 for minor defects. For carton count, labelling and barcode checks, buyers often add special inspection level S-2 or S-3 plus functional barcode scans. The sampling plan must be stated in the PO, not negotiated after production.
Critical defects should include sharp or hazardous fused edges, needle or metal contamination, mould, strong chemical odour, wrong fibre content claim, wrong safety label, and any flammability or restricted-substance failure where testing is part of the order. A heat-cut edge that can scratch skin should not be treated as a minor cosmetic issue.
Major defects should include finished size outside tolerance, finished GSM outside tolerance, wrong colour or severe shade variation, holes, cuts, stains, oil marks, open unsealed edge over 20mm, continuous edge roll over the agreed limit, edge lift above maximum tolerance, incorrect SKU, wrong carton quantity, unreadable barcode, missing required label, packing not matching approved sample, and lint above the agreed acceptance limit. Odour that remains after 24 hours airing should normally be major or critical depending on severity and buyer policy.
Minor defects can include slight nap streaks within the approved limit, small fold marks that relax within 24 hours, isolated fused beads under 3mm, loose yarn tails under 5mm, small shade variation within the approved tolerance, and minor carton printing smudges that do not affect identification. Define how many repeated minors convert to a major; for example, three minor edge defects on one blanket may be counted as one major defective unit. For a broader inspection structure, see blanket quality control inspection.
Heat-cut versus overlocked edges
Heat-cut edges remove thread, reduce sewing labour and keep cartons compact. For airline tenders, that can matter more than retail appearance. A heat-cut 100 x 150cm 140gsm blanket can be folded flat and packed at high carton counts, often 50–100 pieces per export carton depending on fold, individual wrap and carton strength. Overlocked edges add thread weight, perimeter bulk and sewing QC, but they improve edge appearance, reduce roll and give passengers a stronger perception of value.
The failure modes differ. Heat-cut edges fail by curling, hard beads, scorch marks, brittle fused flakes and unsealed gaps at corners. Overlocked edges fail by skipped stitches, broken thread, wavy seams, seam grin, colour mismatch and loose thread tails. At 140gsm, overlock sewing can pucker the edge if differential feed is wrong because the fabric body is thin. A 3-thread overlock is cheaper and lighter; a 4-thread overlock is stronger but bulkier. If the blanket is single-use or limited reuse, heat cut is usually rational. If it must survive repeated laundry and maintain a retail-like look, overlock or binding deserves evaluation.
Price sensitivity is real. Heat cutting removes a sewing line and thread consumption, so it is normally the lowest-cost edge for simple rectangles. Overlock can add a visible cost increment because every blanket needs perimeter sewing, trimming, thread colour control and seam inspection. Binding costs more again because it adds binding fabric, handling and more sewing time. Ultrasonic or reactive welded edges can sit between heat cut and sewing, but not every fleece structure responds cleanly and line setup may increase MOQ. Related edge mechanics are discussed for outdoor mats in reactive melded edge finish on 180gsm rPET picnic mats.
Commercial parameters buyers should lock early
MOQ depends on colour, yarn route, dyeing and packing complexity. For a simple solid colour 140gsm polyester fleece airline blanket, a realistic mill MOQ is often several thousand pieces per colour, with lower quantities possible if stock fabric is accepted and higher MOQs likely for custom colours, recycled yarn claims, special labelling or unusual sizes. Lab dips usually need about 5–10 working days after colour standard receipt. Strike-off or pre-production blanket samples commonly need another 7–14 working days after fabric and trim decisions are fixed.
Bulk lead time is driven by greige availability, dyeing queue, brushing and shearing capacity, cutting method, packing materials and inspection booking. For repeat solid colours with approved fabric, bulk production may fit a few weeks after deposit and approvals; custom dyed, recycled-content or tested programmes need longer. Any requirement for flammability, restricted-substance, colourfastness or recycled-content documents adds calendar time because test reports and traceability papers cannot be created after shipment.
A good approval sequence is: colour standard and target spec; lab dip; fabric handfeel swatch with GSM; heat-cut edge trial; full-size pre-production sample with approved fold and wrap; carton compression sample; lab tests if required; sealed golden sample; bulk production; inline inspection; final random inspection; shipment release. The sealed golden sample should include the blanket, label, band or bag, carton mark and lint limit sample.
Incoterms affect comparison. EXW, FOB Ningbo/Shanghai, FCA consolidation warehouse and CIF/DDP quotations include different cost items. Airline tenders should state Incoterms version, named port or place, carton dimensions, loading quantity target, palletisation requirement, inspection responsibility and document list. For basic trade-off examples, see EXW vs FOB Ningbo for airline fleece blanket tenders and custom blanket lead times and shipping.
Tender wording you can adapt
A concise technical line can read: “Blanket, 100% polyester brushed fleece, finished fabric weight 140gsm ±5% after 24h conditioning, measured to ISO 3801 or ASTM D3776; finished size 100 x 150cm ±2cm after relaxation; one-side or two-side brushing as approved master sample; four sides heat cut and sealed; colour to approved lab dip under D65/TL84; no sharp edge, scorch, hole, stain, objectionable odour or loose yarn tail over 5mm.”
Add edge and curl control: “After unpacking and two hours flat relaxation at 20 ±2°C and 65 ±5% RH, edge lift measured at eight agreed points shall not exceed 15mm, and no continuous rolled edge shall exceed 150mm. Fused edge width 1–3mm; no hard bead, brittle flake, browned edge or unsealed section over 20mm.” Tighten these numbers only after trial samples confirm that the target is achievable at the required price.
Add lint control: “Lint by agreed tape-lift method using 25mm 3M Scotch 600 clear tape or approved equivalent, 2kg roller, 60s dwell, 180° peel, five locations per blanket. Acceptance: no fibre clump over 3mm; no more than 20 visible loose fibres over 2mm per strip, or not worse than sealed approved limit sample. For dark shades, buyer may require a lower fibre-count limit.”
Add packing and AQL: “Pack 50 pieces per export carton unless otherwise approved; carton approximately 58 x 38 x 42cm subject to final fold; carton quantity, marks and barcode to approved artwork; no vacuum compression without written approval; mechanical compression dwell not over 24h; recovery 24h before loft/curl inspection. Final inspection to ANSI/ASQ Z1.4 or ISO 2859-1, normal level II, AQL critical 0, major 2.5, minor 4.0, with defect classifications agreed before bulk.”
Finish with safety and testing: “Colourfastness to washing ISO 105-C06 grade 3–4 or better; rubbing ISO 105-X12 dry grade 4 and wet grade 3 or better unless shade trial indicates otherwise; care symbols to ISO 3758 where attached; flammability and cabin textile requirements to be confirmed by buyer according to airline jurisdiction and internal policy before production. Recycled polyester claims require agreed percentage, traceability documents and any requested transaction documentation before purchase order release.”
Frequently asked
Should 140gsm mean greige fabric weight or finished blanket weight? For a procurement specification, 140gsm should mean finished brushed fabric weight after dyeing, brushing, heat setting if used, relaxation and conditioning. State 140gsm ±5% after 24 hours at 20 ±2°C and 65 ±5% RH, measured to ISO 3801 or ASTM D3776. Greige GSM is not acceptable for shipment inspection because finishing changes weight and thickness.
Are heat-cut edges suitable for reusable airline blankets? They are suitable for single-use and limited-reuse programmes when curl, lint and edge hardness are controlled. For repeated industrial laundry, 140gsm heat-cut fleece is risky because edge roll, pilling and lint become more visible. If the airline expects many wash cycles, test bulk fabric through the actual laundry route or consider heavier fleece with overlocked or bound edges.
What is a practical lint limit for a 140gsm brushed fleece airline blanket? A workable internal method is 25mm clear tape, 2kg roller, 60-second dwell, 180° peel, five locations per blanket. A starting acceptance limit is no fibre clump over 3mm and no more than 20 visible loose fibres longer than 2mm per tape strip, with the average not worse than the approved sealed limit sample. Dark colours may need a tighter limit.
How much edge curl is acceptable after compression packing? For economy-grade 140gsm heat-cut fleece, maximum 15mm edge lift after two hours flat relaxation is a realistic bulk limit. Premium programmes may ask for 8–10mm, but that may require better heat setting, slower cutting or a sewn edge. Curl should be checked after unpacking and recovery, not only on loose pre-production samples.
What AQL should buyers use for final inspection? Many buyers use ANSI/ASQ Z1.4 or ISO 2859-1, normal inspection level II, with AQL 0 for critical defects, 2.5 for major defects and 4.0 for minor defects. Critical defects include sharp edges, contamination, mould and safety failures. Major defects include wrong size, wrong GSM, severe shade variation, stains, open heat-cut edges, excessive curl, lint above limit and wrong packing or barcode.
Do airline blankets need flame-retardant treatment? Not automatically. The buyer must confirm the applicable aviation, cabin service, rail or destination-market requirement before tender release. Some general textile programmes reference 16 CFR Part 1610, but airline internal policies may differ. Flame-retardant treatment can change handfeel, shade, odour, cost and testing lead time, so it should not be added casually.
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