Define the end use before you choose the compliance route
For UK holiday parks, first define whether the blanket is intended as bedding, a throw, or a general leisure blanket. That decision changes the evidence pack. A blanket used on a bed in a caravan, lodge, cabin, or chalet should be specified as a sleep-system component only if it actually forms part of the mattress assembly, mattress pad stack, or other fire-evidenced sleep system. If it is a standalone blanket, do not apply mattress language by default.
BS 7177 is for mattresses, mattress pads, and certain mattress components, not a standalone blanket. If a blanket is sold as part of a sleep system, the file should explain exactly how it interfaces with the mattress or pad and whether the system-level evidence covers that configuration. If it is a free-standing textile, the correct route is usually: the buyer’s own fire policy, a contract-specific evidence file, or an operator/insurer requirement tied to the accommodation type. There is no single ‘correct’ legal blanket test for every holiday-park use.
Write the tender to separate three layers: legal product evidence (what the article is and what law applies), accommodation-specific risk assessment (how the park uses it, stores it, launders it, and supervises it), and operator or insurer requirements (which may be stricter than law). That distinction avoids false claims and prevents a supplier from offering the wrong report because the brief was too vague.
Fire evidence must match the supplied article. A report on a different GSM, different fibre ratio, different finish, or different edge build is weak evidence. Ask the supplier to name the tested article code, fabric construction, finished GSM, dimensions, fibre content, any flame-retardant chemistry, and the finishing route. For buyers who also source caravan soft furnishings, compare the documentation logic with BS 5852 Source 0 caravan blanket testing; the same rule applies: evidence has to match the exact production build, not a product family.
What a 350gsm wool blend actually gives you
A finished weight around 350gsm is a useful specification point for park blankets, but GSM alone does not tell you warmth, drying time, or durability. Two 350gsm blankets can behave very differently if one is a loose woven cloth and the other is compact, brushed, or lightly felted. For sourcing, treat GSM as a mass target, then define the fibre ratio, construction, finishing route, and dimensional tolerance.
Typical constructions in this category are wool/polyester, wool/acrylic, or wool/viscose. A synthetic component generally improves lot-to-lot stability, folding behaviour, and cost control. Higher wool content usually improves tactile warmth and static reduction, but it also raises the risk of shrinkage, felting, surface roughness after washing, and dye-lot variation if the wool yarn is not well controlled. Buyers should not assume that ‘more wool’ automatically means better in housekeeping; it often means tighter wash control and slower recovery from poor laundering.
For a procurement target, use numbers the mill can actually verify: finished size 150 x 200cm ±2cm, finished weight 350gsm ±5%, bow/skew within an agreed visual limit, and no more than the buyer’s allowed tolerance for colour delta between lots. If the blanket is for guest beds, ask for a product file stating expected comfort range and intended seasonality, but avoid untestable phrases such as ‘all-season warmth’. A more useful brief is: ‘Suitable for shoulder-season use in heated accommodation at typical indoor temperatures, subject to operator bedding layer choice.’
Operationally, a 350gsm wool blend is usually easier to turn over than a 450–550gsm blanket because it folds flatter and dries faster, but that is a comparison criterion, not a universal truth. If the programme needs a synthetic alternative with tighter lot control, review wool-feel recycled-polyester camp blankets; they are easier to standardise and launder, but the hand, thermal feel, and fire behaviour are not identical to wool-rich fabric.
How to verify fibre content properly
Separate legal fibre labelling from procurement verification. The UK Textile Products (Indications of Fibre Composition) rules govern what fibre composition information must be given to consumers and how fibres are named. That legal label is not the same thing as batch evidence for purchasing. For blend analysis, ISO 1833 remains the reference series for textile mixture analysis, but the exact part depends on the fibre combination. For a wool/polyester blanket, the lab should use the appropriate method for that blend and state the sample condition, extraction basis, and calculation basis.
Require an accredited lab report when the blend claim matters commercially or contractually. A practical rule: if the blanket is sold into a park contract, private-label programme, or regulated supply chain, ask for a report from an ISO/IEC 17025-accredited laboratory, or equivalent national accreditation, tied to the actual production batch. The report should show article description, fibre percentages, tolerance basis, method used, sample ID, lot number, date, and lab stamp/signature. A hanging label, carton sticker, or factory declaration is not enough if the buyer needs evidence for audit or dispute resolution.
Write the acceptance clause so it can be checked at goods-in. Example: ‘Declared composition 30/70 wool/polyester, supplier to state tolerance before PO acceptance, batch-specific ISO 1833 report required for first bulk lot and thereafter at buyer request.’ If the programme includes recycled content or traceability claims, that is a separate document chain and should not be mixed into the fibre-content discussion unless the buyer explicitly needs it.
Common failure modes are blend drift between yarn lots, finish changes that alter handle without changing the label, and post-wash surface change that makes the blanket feel more synthetic even when composition is correct. If the buyer cares about appearance consistency across replenishment orders, request retained lab dips or physical master standards, not just a composition certificate.
Edge construction: specify the seam, not just the look
Blanket edge language is often too vague. ‘Overlock binding’ can mean a raw edge overlocked only, a turned hem with topstitching, or a cut edge wrapped in binding tape. Those options have different labour cost, wash durability, and fray resistance. For a 350gsm wool-blend blanket, edge choice matters because wool can felt at the edge, acrylic-rich blends can fuzz, and polyester-rich blends can open if the seam is under-engineered.
Specify the construction with enough detail to be measured. State stitch class, stitch density, thread type, thread ticket, binding width, and edge allowance. Practical PO wording might be: ‘Edge finish: 10–12mm binding tape applied over a 6–8mm overlock/cover-stitch edge, thread 100% polyester core-spun, Tex 27–40 depending on needle count and fabric bulk, stitch density 8–10 SPI equivalent, corners reinforced, no exposed cut yarns.’ If you want a simpler edge, write ‘overlock only’ and accept the trade-off: lower cost, higher risk of edge curl, corner opening, and fray after laundering.
Do not lock in one seam test unless it matches the actual edge build. ISO 13935-2 is suitable for many woven seam assemblies, but some blanket edges are better assessed by edge pull-out, tear resistance, seam slippage, abrasion, or stitch performance depending on the structure. A bound woven edge may need seam strength plus tear testing; a knitted or brushed fleece edge may need anti-fray and abrasion evidence; an ultrasonically cut synthetic edge may need edge fusion verification rather than a conventional seam test. Match the test to the build.
For functional durability, ask for a minimum acceptance level that reflects the construction and use. Common defects to classify as major are needle skips, loose thread tails beyond the trimming allowance, binding twist, corner puckering, seam slippage, and edge opening after the approved wash route. For a different edge logic, compare with bias-bound mitred-corner constructions and whipstitch-edge blankets; the finish choice changes durability as much as appearance.
Laundering specification: write the full route, not a half-sentence
If the blanket will be washed by park housekeeping or an outsourced laundry, the wash route must be written into the spec. Do not leave laundering as a generic care note. State whether the approval is for domestic laundering or industrial laundering. Those are not interchangeable, and a blanket approved for one route may fail the other.
Sample PO language: ‘Test and approve to ISO 6330 domestic laundering route 4N or agreed commercial equivalent; wash at 40°C or 60°C as selected by buyer; detergent without optical brightener unless approved; tumble dry low, line dry, or flat dry as specified; iron if applicable at low temperature only; maximum dimensional change after 5 cycles: length and width not exceeding 3% shrinkage or growth unless otherwise agreed; no visible seam opening, no edge failure, and no unacceptable pilling after the approved cycle count.’ If the operator uses industrial laundry, define the actual route: wash chemistry, process temperature, drying method, and whether the item passes through tunnel finisher, flatwork ironer, or tumble-dry recovery.
Choose the wash route by use case. For occasional leisure use, 40°C domestic laundering may be enough. For accommodation stock that turns over repeatedly, 60°C is often the more realistic housekeeping target, provided the blend and finish can tolerate it. Wool-rich constructions are more likely to shrink or distort if finishing is weak, so ask for pre-shrunk or controlled-finish fabric and test the finished article, not just the cloth. Drying method matters: tumble drying increases edge stress and reveals seam weakness faster than line drying. If the park uses industrial laundries, state that the approval must reflect the operator’s actual cycle, not a home-care instruction that housekeeping will never follow.
Set measurable acceptance limits. Useful starting points for this category are: dimensional change within ±3% after the agreed wash route, no severe pilling, no significant edge distortion, no unacceptable colour transfer, and no loss of functional hand that would change guest use. If the blanket is expected to be reused through many cycles, add a retained-sample wash check after first production and after replenishment lots. For a broader laundering reference, see industrial laundry specs for how cycle-based acceptance language is written in practice.
Colourfastness, rubbing, and appearance retention
Holiday park blankets are guest-handled, folded, laundered, and stored repeatedly, so appearance controls matter. Do not specify only blend and GSM if you expect a consistent retail look. Ask for colourfastness and crocking targets that fit the use. For a dark or saturated wool-blend blanket, a common buyer position is: colourfastness to washing ISO 105-C06 at a level agreed with the supplier for the chosen colour depth, colourfastness to light ISO 105-B02 if the article will sit in bright lodges or public areas, and dry/wet rubbing ISO 105-X12 if guest handling or contact with pale clothing is a concern.
A practical procurement statement might read: ‘No visible rubbing transfer on dry rub under normal guest handling; wet rub to be declared and agreed for dark shades; light-fastness to be suitable for indoor accommodation use with occasional daylight exposure.’ If the blanket uses melange, heather, or yarn-dyed colour, build in shade-band approval and batch-to-batch tolerance rather than relying on a single lab dip.
Failure modes include surface fuzz that makes dark colours look dusty, colour migration in early washes, and edge abrasion that creates a lighter halo around the border. If a supplier cannot quote a realistic test route for the colour system, treat the colour claim as unproven until the first bulk lot is approved.
Inspection and acceptance limits buyers can actually use
A blanket spec is incomplete if the goods-in team cannot measure it. Add explicit tolerances for weight, size, shrinkage, appearance, and seam integrity. A useful starting point for a B2B blanket programme is: finished GSM ±5%, finished length/width ±2cm for articles under 200cm long, colour and shade within approved standard, and no critical seam or edge defects. For woven or bound articles, define the allowable stitch fault rate. For brushed or napped blankets, define what counts as unacceptable bald spots, oil stains, yarn knots, or pile streaking.
Use AQL in the PO, not as a vague QC phrase. For most retail or hospitality blanket programmes, many buyers start around AQL 2.5 for major defects and AQL 4.0 for minor defects, then tighten or relax depending on volume, risk, and supplier history. If the article is for a higher-risk contract, a pre-shipment inspection at AQL 2.5 with a retained sample and carton-count verification is more defensible than a final random check without dimensional measurement.
Include a basic measurement checklist: finished size, GSM, composition, label content, seam/edge condition, colour against approved standard, packaging count, and carton marking. Measure at least one blanket per carton or the agreed sample size, and record lot number, carton number, and inspector initials. If the buyer has no incoming QC process, the supplier should at minimum provide a batch COA and a retained sample from the first production lot.
UK documentation buyers should keep on file
For UK procurement, the compliance file should be usable in a dispute, audit, or insurance review. Keep the supplier declaration, fibre composition evidence, fire evidence relevant to the article, test reports tied to the production lot, care instructions, country of origin statement, carton markings, and retained sample records. If the blanket is sold under a private label, keep art approval and packaging approval as well.
Ask for a simple document pack: commercial invoice, packing list, batch/lot traceability, fibre composition declaration, relevant test reports, care label artwork, and a signed specification sheet. If the supplier is claiming recycled content, add transaction documents or traceability records only where that claim is in scope. If origin matters for customs or brand policy, keep the country of origin statement separate from fibre composition; they are different issues and should not be merged on one vague declaration.
Retained sample policy matters. Hold one approved sample from pre-production, one from first bulk, and one from the latest replenishment lot if the programme is ongoing. Keep the sample under the same light and handling conditions as the warehouse stock, and log any deviation against it. That makes claims about shade drift, handle change, or finishing variation much easier to resolve.
Decision matrix: what to specify by end use
Use this as a quick buyer matrix before issuing the PO:
Standalone throw in lodge living area — evidence: product-specific fire file if required by operator/insurer, fibre composition declaration, colourfastness and crocking targets; construction: bound or overlocked edge, 350gsm target, size tolerance; wash route: domestic or light commercial, usually 40°C unless operator requires more.
Bedding-layer blanket in guest accommodation — evidence: sleep-system definition, any mattress-system fire evidence only if truly applicable, fibre verification, laundering route tied to housekeeping; construction: tighter edge control, lower seam opening risk, shrinkage limit.
Public-area leisure blanket — evidence: operator risk assessment, handling durability, colour retention, traceability; construction: abrasion-resistant edge, stain visibility management, easy-fold build; wash route: often more frequent and more aggressive.
Retail souvenir or private-label blanket — evidence: legal fibre label, artwork approval, pack declaration, batch traceability, retained samples; construction: appearance consistency and packaging durability matter more than hotel-housekeeping speed.
If the park has multiple use cases, do not try to cover them with one vague blanket spec. Split the programme by end use and issue separate PO clauses if the requirements differ. That avoids over-specifying a leisure throw or under-specifying a bedding blanket.
PO wording and pre-shipment checklist
A good PO removes guesswork. Use direct clauses such as: ‘Supplier to manufacture only to approved physical sample and approved specification sheet. No material, finish, colour, dimension, or label change without written buyer approval. Any substitute fibre, thread, tape, packaging, or finish requires prior notice.’ Add ‘Production lot traceability required on carton and inner pack. Country of origin to be declared on commercial documents and carton marks as required by law and buyer policy.’
Pre-shipment checklist: approved lab dip or physical master; fibre declaration; batch-specific test report if required; wash-route approval; label artwork checked; carton count verified; dimensions and GSM within tolerance; seam and edge checked; packaging sealed and legible; retained sample held by mill and buyer. On receipt, inspect against the same checklist rather than relying on the supplier’s summary.
If you need a related outdoor or campsite spec, compare with wool-feel recycled-polyester camp blankets and water-resistant cotton picnic blankets; both show how construction and evidence change with use environment.
Frequently asked
Does BS 7177 apply to a wool-blend blanket used in a holiday park? Not by default. BS 7177 is for mattresses, mattress pads, and related sleep-system components. A standalone blanket or throw is not automatically in scope. If the blanket is part of a mattress system, the file must explain that configuration and the evidence must cover it. Otherwise, use the operator’s or insurer’s required route for the actual article.
What fibre evidence should I ask for in the UK? For legal labelling, the UK Textile Products (Indications of Fibre Composition) rules govern how fibre composition is described. For procurement proof, ask for an ISO 1833 blend-analysis report from an ISO/IEC 17025-accredited lab tied to the actual lot, plus the supplier’s declaration and retained sample record.
What shrinkage limit is reasonable after washing? For a blanket in this category, many buyers start with no more than 3% dimensional change in length and width after the agreed wash route. If the item is wool-rich or will be industrially laundered, the tolerance may need to be tighter or the wash route may need to be gentler, depending on the construction.
Should I use domestic or industrial laundering in the spec? Use the route that matches actual housekeeping. If the park launders off-site or in-house with commercial equipment, specify industrial laundering. If staff wash in standard domestic machines, specify an ISO 6330 domestic route. Do not mix the two in one approval claim.
What defects should count as major on receipt? Common major defects are incorrect composition or label, wrong size beyond tolerance, significant shade mismatch, seam or edge opening, exposed raw yarns, broken binding, strong odour from finish, and visible pilling or abrasion beyond the approved standard.
Do I need colourfastness and crocking limits? Yes if appearance consistency matters. Holiday park blankets are handled frequently and may be laundered often. Ask for wash fastness, dry/wet rubbing, and light fastness appropriate to the shade and use location, especially for dark colours and public areas.
What documents should stay on file for audit or disputes? Keep the supplier declaration, fibre composition evidence, relevant fire evidence, batch test reports, care label artwork, purchase order, country of origin statement, carton marks, and at least one retained sample from the approved lot.
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