Sewing thread of man-made filaments or staple fibres

1. Scope and Applicability

This PCR governs factory-gate foreground data packages for sewing thread made from purchased man-made filament yarn or man-made staple-fibre yarn. The core foreground boundary starts with received yarn and includes route-applicable doubling, cabling or twisting, coning and winding, application of textile twisting oil, inspection, and packing. It ends with saleable sewing thread on the declared cone or spool and its immediate transport packaging.

Wet pretreatment, dyeing, washing, drying, heat-setting, or other chemical finishing is outside the core conversion process. When any of those operations forms part of the marketed product state, it shall be represented by an explicitly linked foreground process with its actual atomic chemicals, water, energy carriers, wastewater, direct emissions, and residues; it shall not be hidden in the core conversion inventory. Polymerisation, man-made fibre production, incoming-yarn production, distribution, garment manufacture, use, and end of life are upstream or downstream processes and are not part of this gate-to-gate dataset.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.food-products-beverages-and-tobacco-textiles-apparel-and-leather-products.yarn-and-thread-woven-and-tufted-textile-fabrics.sewing-thread-of-man-made-filaments-or-staple-fibres
classification_refs	CPC 3.0: 26410 - Sewing thread of man-made filaments or staple fibres
covered_products	Sewing thread made from man-made continuous filaments or synthetic or artificial staple fibres, supplied in an undyed or separately modelled dyed/finished state
excluded_products	Yarn not manufactured for sewing; natural-fibre sewing thread; embroidery yarn not sold as sewing thread; fishing line, cordage, twine, fabric, apparel, and sewing operations
representative_product	Undyed, lubricated, wound sewing thread made from multiple or cabled man-made filament yarn and supplied on a declared cone
production_route	Purchased yarn reception; doubling/cabling or twisting; textile twisting-oil application; winding/coning; inspection; packing; separately linked wet processing when applicable
market_state	Factory-gate saleable sewing thread with fibre family, filament/staple route, linear density, ply, twist, finish, colour state, cone/spool type, and packaging declared

3. Reference Flow

Field	Value
What	Saleable sewing thread of man-made filaments or staple fibres at the factory gate
How much	1 kg net mass of sewing thread, excluding cone/spool and transport packaging
How well	Meets the declared fibre family and composition, filament or staple route, linear density, ply, twist direction and level, tensile/elongation grade, finish, colour state, and packaging specification
How long or cycle	One completed production lot at factory gate; no use-duration equivalence is claimed
reference_flow_link	final_sewing_thread

Field	Value
Reference amount	1 kg
Reference product flow	Yarn c98c206f-fee3-45d6-9549-b22eeb6b058b
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	CPC 26410 product identity; fibre family and mass composition; filament or staple route; recycled-content claim if any; linear density; number of plies; twist direction and twist level; colour and wet-processing state; lubricant/finish identity; cone or spool type; net product mass; production geography; reporting period

When constructing a foreground data package, all required qualifiers shall be declared in dataset metadata, process notes, the reference-flow comment, the product description, or an equivalent data-package field. A generic Tiangong base name does not replace the CPC 26410 and sewing-thread qualifiers.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_product_mass	final sewing thread	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Determine net conditioned thread mass at the declared factory-gate state; exclude cone/spool and transport packaging and disclose the conditioning or moisture basis.
material_mass_basis	yarn, twisting oil, cone/spool, box, and waste rows	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Record each atomic material or waste by measured mass and normalize it to 1 kg net sewing-thread output.
electricity_energy_basis	alternating-current input	Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66	kWh	Preserve the metered electricity quantity in kWh and document the voltage level, geography, and supplier or grid-mix basis.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased man-made yarn received at the sewing-thread conversion facility, with fibre composition, filament/staple route, prior dyeing/finish state, mass, supplier, and lot identity declared
starting_condition_role	Upstream product input to the gate-to-gate sewing-thread conversion dataset
product_classification_scope	Sewing thread within CPC 3.0 code 26410; classification is scope evidence and not canonical PCR identity
recursive_input_rule	A purchased input already classified as sewing thread of CPC 26410 shall remain a separate upstream product flow and shall not be relabelled as raw yarn or recursively expanded inside this dataset.
upstream_dataset_requirement	Each purchased yarn or sewing-thread input requires a compatible upstream dataset or an explicit documented data gap; the upstream dataset shall match fibre family, composition, route, geography, and market state.
disclosure	Disclose which thread-forming, wet-processing, finishing, winding, inspection, and packing operations occur on site and identify every excluded or separately linked operation.

rule_id	Applies to	Rule	source_ids
boundary_core_conversion	core foreground process	Include all on-site doubling, cabling, twisting, twisting-oil application, winding/coning, inspection, rework, and packing required to produce the declared sewing thread.	jrc-textiles-bref-2023
boundary_wet_processing	marketed dyed or chemically finished thread	When wet treatment or chemical finishing is part of the marketed state, link a separate foreground process and report every actual atomic chemical, water, energy, wastewater, residue, and direct-emission flow.	jrc-textiles-bref-2023; eu-textiles-bat-2022
boundary_upstream_downstream	product system	Keep incoming-yarn production upstream and distribution, sewing, use, and end of life downstream; do not claim cradle-to-gate coverage unless those datasets are linked.	iso-14044-2006

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
thread_conversion_winding_packaging	Thread conversion, winding, and packaging	required	Always included for factory-gate sewing-thread production	Foreground mechanical conversion and packing	1 kg net saleable sewing thread
wet_processing_linked	Linked wet processing or chemical finishing	conditional	Include as a separate linked foreground process when the marketed thread is dyed, washed, heat-set, coated, or otherwise chemically finished	Route-specific foreground wet processing	1 kg treated thread transferred to final winding or factory gate

Process: Thread conversion, winding, and packaging (thread_conversion_winding_packaging)

Inputs

Product flows

Man-made filament yarn route input (input_man_made_filament_yarn)

Record this atomic product only for the filament route. Supplier and lot records shall establish that it is incoming yarn and not already saleable sewing thread.

• Selected flow: Yarn of man-made filaments, multiple or cabled (other than sewing thread, high tenacity yarn of polyamides, polyesters or viscose rayon), not put up for retail sale d3526e15-e0a8-4d96-8688-2738fd9d20ba
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net mass received and consumed by the production lot
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net saleable sewing thread
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_input_records
• Sources: jrc-textiles-bref-2023

Synthetic staple-fibre yarn route input (input_synthetic_staple_yarn)

Record this atomic product only for a qualifying synthetic staple-fibre route. The exact Tiangong UUID remains unresolved; the less-than-85% and artificial-fibre candidates were rejected as non-equivalent.

• Selected flow: Yarn (other than sewing thread) of synthetic staple fibres, containing 85% or more by weight of such fibres
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net mass received and consumed by the production lot
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net saleable sewing thread
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_input_records
• Sources: jrc-textiles-bref-2023

Artificial staple-fibre yarn route input (input_artificial_staple_yarn)

Record this atomic product only for the artificial staple-fibre route and retain the declared artificial-fibre composition.

• Selected flow: Yarn (other than sewing thread) of artificial staple fibres, containing 85% or more by weight of such fibres, not put up for retail sale b2fccf4f-e4c4-4723-9e9b-ef0956abd0fc
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net mass received and consumed by the production lot
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net saleable sewing thread
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_input_records
• Sources: jrc-textiles-bref-2023

Textile twisting oil (input_textile_twisting_oil)

Record the mass of the textile twisting oil formulation applied during coning or twisting. The exact Tiangong UUID is unresolved because the generic lubricating-oil candidate does not preserve the textile-use semantics.

• Selected flow: Textile twisting oil
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured mass issued to and consumed by the production lot, net of documented returns
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net saleable sewing thread
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_input_records
• Sources: jrc-textiles-bref-2023

Medium-voltage alternating current (input_medium_voltage_electricity)

Record metered alternating-current consumption for twisting, winding, inspection, extraction, and packing equipment at the declared 1-35 kV supply boundary.

• Selected flow: alternating current 3d76981f-964a-4865-b588-0e067a2a1163
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / kWh
• Amount rule: production-line or allocated facility-meter consumption during the production lot
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net saleable sewing thread
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_electricity_meter
• Sources:

Polypropylene sewing-thread cone (input_polypropylene_thread_cone)

Record this atomic packaging component when the saleable thread remains wound on a polypropylene cone. The exact Tiangong UUID is unresolved; polypropylene resin was rejected because it is not the manufactured cone.

• Selected flow: Polypropylene sewing-thread cone
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured or supplier-declared mass of cones incorporated in the production lot
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net saleable sewing thread
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources:

Corrugated board box (input_corrugated_board_box)

Record the atomic corrugated-board transport box mass used for the declared factory-gate product.

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured or supplier-declared box mass consumed by the production lot
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net saleable sewing thread
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Final sewing thread (final_sewing_thread)

Record the net mass of conforming factory-gate sewing thread. Cone/spool and transport packaging mass shall not be included in this reference-product quantity.

• Selected flow: Yarn c98c206f-fee3-45d6-9549-b22eeb6b058b
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net mass of released conforming sewing thread
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: 1 kg net saleable sewing thread
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_product_output
• Sources: unsd-cpc-3-0-2025

Waste flows

Synthetic sewing-thread offcuts (output_synthetic_thread_offcuts)

Record cut ends, damaged thread, and unrecoverable synthetic thread removed from the production lot as one specific waste flow. The exact Tiangong UUID remains unresolved; waste fibre fabric was rejected as non-equivalent.

• Selected flow: Synthetic sewing-thread offcuts
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured mass transferred to the declared waste-management route
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net saleable sewing thread
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_output
• Sources:

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_subdivision_first	shared conversion and packing operations	First subdivide or meter product lines, lots, and wet-processing operations so that sewing-thread inputs, energy, packaging, and wastes are directly assigned wherever practicable.	iso-14044-2006
allocation_physical_mass	residual shared burdens	If subdivision or direct metering cannot remove a shared burden, allocate it by net mass of conforming product output, disclose the affected flows and allocation fraction, and test sensitivity when another physical relation may materially change results.	iso-14044-2006
allocation_rework_and_waste	internal rework and waste outputs	Return internally rewound or reworked thread to the same lot without treating it as a co-product; record only material leaving for external recovery or disposal as waste and disclose any credited external recovery outside this gate-to-gate inventory.	iso-14044-2006

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_material_input_records	thread_conversion_winding_packaging	route-applicable yarn and textile twisting oil	weighbridge, warehouse issue, invoice, and return record	material identity; Tiangong UUID if resolved; supplier; lot; fibre composition; opening mass; issued mass; returned mass	reconcile purchase/warehouse records with lot issue and return records	kg	each lot; monthly reconciliation	declared reporting period	all in-scope conversion lines	consumed mass = issued mass minus documented return; normalize by conforming thread output	calibrated scale record; supplier specification; inventory reconciliation
cp_electricity_meter	thread_conversion_winding_packaging	medium-voltage alternating current	electricity meter and production-time record	meter start; meter end; voltage level; production line; lot time; shared-load basis	direct submetering preferred; otherwise documented physical allocation from facility meter	kWh	each lot or shift; monthly reconciliation	declared reporting period	all in-scope conversion and packing equipment	subtract documented idle/non-product load and divide assigned kWh by conforming thread output	meter calibration; bill reconciliation; allocation worksheet
cp_packaging_records	thread_conversion_winding_packaging	polypropylene cone and corrugated board box	packaging issue, supplier mass specification, and return record	component identity; component count; unit mass; issued count; returned count	weigh representative components and reconcile issued less returned quantities	kg	each packaging lot	declared reporting period	all packaging used for the reference product	component mass = net count multiplied by verified unit mass; normalize by net thread output	scale calibration; supplier specification; count reconciliation
cp_product_output	thread_conversion_winding_packaging	final sewing thread	finished-goods scale and quality-release record	lot; gross mass; tare mass; net thread mass; moisture/conditioning basis; rejected mass	weigh released product and subtract separately measured cone/spool and packaging tare	kg	each lot	declared reporting period	all released reference product	sum conforming net thread mass only	calibrated scale; quality release; tare verification
cp_waste_output	thread_conversion_winding_packaging	synthetic sewing-thread offcuts	waste-bin scale ticket and transfer record	waste identity; source lot; container tare; gross mass; destination; date	weigh each transfer and subtract container tare	kg	each transfer; monthly reconciliation	declared reporting period	all in-scope conversion lines	sum net offcut mass by lot and normalize by conforming output	calibrated scale; transfer receipt; mass-balance reconciliation

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_net_reference_mass	final sewing thread	net_thread_kg = gross_released_kg - cone_spool_tare_kg - transport_packaging_tare_kg	released gross mass; cone/spool tare; packaging tare	net sewing-thread mass	iso-14048-2002
calc_material_normalization	mass-based inputs and waste	normalized_kg_per_kg = lot_flow_kg / conforming_net_thread_kg	lot flow mass; conforming net output mass	kg per kg reference flow	iso-14048-2002
calc_energy_normalization	medium-voltage alternating current	normalized_kWh_per_kg = assigned_lot_kWh / conforming_net_thread_kg	assigned meter consumption; conforming net output mass	kWh per kg reference flow	iso-14048-2002

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_product_identity	reference product and yarn inputs	Retain product specification, fibre composition, filament/staple route, linear density, ply, twist, finish, colour state, and CPC 26410 classification evidence.	supplier certificate; bill of materials; quality-release record
dq_temporal_coverage	all foreground flows	Use a representative continuous 12-month period where available, or disclose a shorter campaign/lot period and its seasonality, downtime, and product-mix limitations.	dated meter, warehouse, production, and waste records
dq_completeness	process boundary	Reconcile yarn input, twisting oil, packaging, electricity, conforming product, rework, and thread offcuts; identify separately linked wet processing and every known excluded flow.	signed mass-balance and boundary checklist
dq_measurement	mass and electricity	Use calibrated instruments or supplier-certified unit masses and retain the allocation worksheet for any shared meter.	calibration certificate; supplier specification; meter reconciliation
dq_uuid_resolution	unresolved atomic flows	Before active review, repeat Tiangong lookup for each unresolved row and accept a UUID only after state, flow type, name semantics, property, and unit are verified.	review record linked by row_id

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference_identity	reference product	Fail category conformance unless the dataset declares sewing-thread use, man-made filament or staple-fibre composition, CPC 26410 scope, and all required qualifiers.	unsd-cpc-3-0-2025
validate_reference_mass	reference flow	Fail when the reference quantity includes cone/spool or transport-packaging mass, lacks a conditioning basis, or is not normalized to 1 kg net conforming thread.	iso-14048-2002
validate_atomic_inventory	all inventory rows	Fail when a selected flow combines materials, utilities, packaging components, wastes, emissions, or future selection instructions; each row shall identify one atomic exchange.	jrc-textiles-bref-2023
validate_route_boundary	dyed or chemically finished product	Fail full factory-gate conformance when marketed wet processing is omitted or represented without a linked process containing actual atomic recipe, water, energy, wastewater, residue, and direct-emission records.	jrc-textiles-bref-2023; eu-textiles-bat-2022
validate_mass_balance	conversion lot	Require documented reconciliation of incoming yarn and oil with conforming thread, internal rework, retained stock change, and offcut waste; report any unexplained imbalance rather than forcing closure.	iso-14048-2002
validate_uuid_state	UUID-bearing rows	Accept a Tiangong UUID only when direct read confirms state_code 100, the required flow type, matching name semantics, and the declared flow property/unit.

10. Published Dataset Profile

Field	Value
dataset_role	Foreground gate-to-gate production dataset for factory-gate sewing thread of man-made filaments or staple fibres
downstream_use	secondary_dataset; background_dataset after review and geographic, technological, and product-state representativeness assessment
allowed_use	Cradle-to-gate or broader LCA models when compatible upstream yarn and any route-applicable wet-processing datasets are linked and required qualifiers match
excluded_use	Natural-fibre sewing thread; generic yarn not made for sewing; cradle-to-gate claims without upstream yarn; dyed/finished product claims with omitted wet processing; use-stage or durability equivalence
required_metadata	PCR id and version; CPC 26410; product qualifiers; facility and geography; reporting period; technology; boundary; upstream yarn links; linked wet-processing process if any; allocation; data quality; unresolved UUID disclosure
required_quality_disclosure	Primary-record share; meter and scale coverage; temporal and site coverage; shared-meter allocation; mass-balance result; excluded flows; wet-processing link status; unresolved UUID rows
update_trigger	Change in fibre family/composition, yarn route, twisting technology, finish or wet-processing route, energy supply, packaging, allocation, facility geography, or evidence that materially changes the inventory

11. Data Sources

Source id	Type	Reference	Used for
unsd-cpc-3-0-2025	Official guidance (official_guidance)	United Nations Statistics Division, Central Product Classification (CPC) Version 3.0 Explanatory Notes, code 26410, 30 June 2025, https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Exp_Notes_30Jun2025.pdf (retrieved 2026-08-12)	Official product-category identity and separation from non-sewing yarn categories
jrc-textiles-bref-2023	Official guidance (official_guidance)	European Commission Joint Research Centre, Best Available Techniques (BAT) Reference Document for the Textiles Industry, 2023, ISSN 1831-9424, https://bureau-industrial-transformation.jrc.ec.europa.eu/reference/textiles-industry (retrieved 2026-08-12)	Man-made-fibre yarn preparation, twisting and winding, coning/twisting oils, yarn dyeing, and wet-processing boundary decomposition
eu-textiles-bat-2022	Official guidance (official_guidance)	Commission Implementing Decision (EU) 2022/2508 establishing BAT conclusions for the textiles industry, ELI http://data.europa.eu/eli/dec_impl/2022/2508/oj (retrieved 2026-08-12)	Material, water and energy inventories; chemical-management, emissions and wastewater records for linked wet processing
iso-14044-2006	Standard (standard)	ISO 14044:2006, Environmental management - Life cycle assessment - Requirements and guidelines, https://www.iso.org/standard/38498.html (official description retrieved 2026-08-12)	LCI boundary, allocation, reporting, and interpretation framework
iso-14048-2002	Standard (standard)	ISO/TS 14048:2002, Environmental management - Life cycle assessment - Data documentation format, https://www.iso.org/standard/29872.html (official description retrieved 2026-08-12)	Transparent foreground record, calculation, and data-quality documentation
wang-down-jackets-2023	Literature (literature)	Wang et al., Carbon Footprint and Water Footprint Assessment of Down Jackets, 2023, DOI 10.1177/24723444231172216	Peer-reviewed full-text confirmation that polyester sewing thread is an accessory product and that textile thread production includes spinning, dyeing, and finishing stages