Yarn of vegetable textile fibres other than cotton (including flax, jute, coir and true hemp); paper yarn

1. Scope and Applicability

This PCR governs foreground data packages for the factory manufacture of yarn from non-cotton vegetable textile fibres, including flax, jute, coir and true hemp, and for yarn made by slitting and twisting paper. It covers preparation performed inside the yarn mill, spinning or paper-strip twisting, plying when performed, winding, and production-lot conditioning up to finished yarn at the plant gate.

The starting material is a purchased, processed fibre suitable for spinning or purchased paper suitable for slitting and twisting. Cultivation, harvesting, retting, decortication, upstream degumming, pulp production, and papermaking are represented by upstream datasets. Weaving, knitting, dyeing, bleaching, coating, sizing, garment manufacture, distribution, use, and end-of-life are outside this foreground boundary unless a study adds them as separately measured processes.

One foreground data package represents one declared material and route. Blends containing cotton, animal fibres, or man-made fibres are outside this PCR unless the non-cotton vegetable-fibre or paper component is modelled as a separately measurable product input and the resulting product still meets the declared CPC 26380 product identity. Sewing thread and rope, cordage, woven fabric, raw or retted crop material, and processed-but-unspun fibre sold as the final product are excluded.

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.yarn-of-vegetable-textile-fibres-other-than-cotton-including-flax-jute-coir-and-true-he-66566500
classification_refs	CPC 3.0: 26380
covered_products	Finished single, plied, or cabled yarn made from one declared non-cotton vegetable textile fibre; finished paper yarn made from one declared paper input.
excluded_products	Cotton yarn; animal-fibre yarn; man-made-fibre yarn; sewing thread; rope or cordage; woven or knitted fabric; processed fibre not yet spun; yarn whose dyeing, coating, or sizing is not separately modelled when those treatments are part of the delivered product.
representative_product	Unbleached, undyed finished yarn made from one declared non-cotton vegetable textile fibre, wound for dispatch at the yarn mill gate.
production_route	Route A: processed vegetable fibre preparation, spinning, optional plying, winding, and conditioning. Route B: paper slitting, optional moistening, twisting or folding, optional plying, winding, and conditioning.
market_state	Finished yarn at the manufacturing plant gate, with material identity, linear density, twist, moisture basis, treatment state, and package form declared.

3. Reference Flow

Field	Value
What	Provision of finished non-cotton vegetable-fibre yarn or paper yarn at the yarn manufacturing plant gate.
How much	1 kg net yarn, excluding transport packaging and reusable carriers.
How well	Conforming to the declared fibre or paper identity, yarn construction, linear density, twist direction and level, moisture basis, treatment state, and quality specification.
How long or cycle	One completed production lot; no use-duration function is assigned.
reference_flow_link	The functional unit is realized by the single reference product flow defined below.

Field	Value
Reference amount	1 kg
Reference product flow	Yarn of vegetable textile fibres other than cotton (including flax, jute, coir and true hemp), paper yarn bf8e0cc2-c99b-43a9-b306-d31a7fb8c11f
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	route; botanical fibre species or paper grade; single/plied/cabled construction; linear density in tex; twist direction; twist level; moisture basis and measured moisture content; treatment state; package form; plant geography; production period

When constructing a foreground data package, every required qualifier shall be declared in dataset metadata, process notes, reference-flow comments, product descriptions, or an equivalent field. Missing qualifiers make the reference flow incomplete for that data package.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_mass	Reference yarn output	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Record net yarn mass excluding transport packaging and reusable carriers. Declare the moisture basis and retain the measured lot moisture used with the mass result.
linear_density	Yarn product specification	Linear density	tex	Record linear density in tex or retain the original count together with the documented conversion to tex. Determine package-yarn linear density using the applicable ISO 2060 procedure or an explicitly justified equivalent.
twist_measurement	Yarn product specification	Twist	turns/m	Declare S or Z direction and turns per metre. Use ISO 2061 where applicable; if that method is not applicable to the yarn construction, retain the agreed test method and specimen conditions.
electricity_energy	Medium-voltage alternating-current input	Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66	MJ	Preserve the metered electricity amount and its original unit; when converting to MJ, retain the conversion equation and source unit.
material_mass	Fibre, paper, water, lubricant, and waste rows	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Record weighed mass by production lot. If water is metered by volume, retain volume, temperature or density evidence, and the calculation used to obtain mass.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Processed fibre suitable for the declared spinning route is received at the yarn mill, or paper suitable for the declared paper-yarn route is received before slitting.
starting_condition_role	Upstream product input to the foreground yarn-manufacturing process.
product_classification_scope	CPC 3.0 code 26380, constrained by the covered and excluded product statements in this PCR.
recursive_input_rule	If same-category yarn is used for plying or another in-scope operation, record that yarn as one explicit product input with its own upstream dataset; do not expand it recursively inside this foreground process.
upstream_dataset_requirement	Each purchased fibre, paper, same-category yarn, electricity supply, water supply, and lubricant input shall reference an upstream dataset that matches the declared material, geography, technology, and time as closely as available.
disclosure	Declare starting material identity and condition, upstream preparation already completed, included on-site operations, excluded treatments, material losses, electricity voltage and supply mix, water use, auxiliary use, waste destinations, and any same-category yarn input.

rule_id	Applies to	Rule	source_ids
boundary_factory_gate	foreground yarn manufacture	Include all directly controlled preparation, spinning or paper-strip forming, plying, winding, conditioning, utilities, auxiliaries, rejects, and wastes from receipt of the declared starting material through finished yarn at the plant gate.	eu-jrc-txt-bref-2023; chummun-rosunee-2012; eu-pef-2021
boundary_upstream_inputs	purchased starting materials and utilities	Keep cultivation, retting, decortication, degumming, pulp manufacture, papermaking, and utility generation in linked upstream datasets unless any operation is physically performed and measured inside the reporting site.	unsd-cpc-3-0-26380; eu-jrc-bio-based-textiles-2025; eu-pef-2021
boundary_treatments	dyeing, bleaching, coating, and sizing	Exclude downstream treatment unless it forms part of the delivered yarn and is separately measured as an added foreground process; disclose any exclusion that changes the delivered product state.	eu-jrc-txt-bref-2023; eu-bat-textiles-2022

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
yarn_manufacturing	Vegetable-fibre or paper-yarn manufacturing	required	Include one declared route and only the atomic material rows applicable to the production lot.	Foreground preparation, spinning or paper-strip forming, optional plying, winding, conditioning, and release of finished yarn.	1 kg net finished yarn at the declared moisture basis.

Process: Vegetable-fibre or paper-yarn manufacturing (yarn_manufacturing)

Inputs

Product flows

Prepared flax sliver (flax_sliver_input)

Record this input only for a flax-yarn lot that receives prepared flax sliver suitable for spinning.

• Selected flow: Prepared flax sliver (for spinning) 728fa78a-f638-4d63-86c6-f752fe31b5a2
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed net prepared flax sliver charged to the production lot.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_inputs
• Sources: eu-jrc-bio-based-textiles-2025

Processed jute fibre (jute_fibre_input)

Record this input only for a jute-yarn lot. The unresolved name denotes one processed jute fibre product suitable for spinning, not tow or a mixed waste stream.

• Selected flow: Processed jute fibre for spinning
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed net processed jute fibre charged to the production lot.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_inputs
• Sources: eu-jrc-txt-bref-2023

Processed true hemp fibre (hemp_fibre_input)

Record this input only for a true-hemp-yarn lot and retain the declared preparation state received by the mill.

• Selected flow: Processed true hemp fibre for spinning
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed net processed true hemp fibre charged to the production lot.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_inputs
• Sources: eu-jrc-bio-based-textiles-2025

Processed coir fibre (coir_fibre_input)

Record this input only for a coir-yarn lot and retain the declared preparation state received by the mill.

• Selected flow: Processed coir fibre for spinning
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed net processed coir fibre charged to the production lot.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_inputs
• Sources: eu-jrc-txt-bref-2023

Paper strip (paper_strip_input)

Record the paper feed as one paper-strip product for a paper-yarn lot. If slitting is performed on site, the measured feed is the paper before slitting and the product description shall still identify the paper grade used to make the strip.

• Selected flow: Paper strip for paper-yarn twisting
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed net paper charged to slitting, folding, or twisting for the production lot.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net finished paper yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_inputs
• Sources: chummun-rosunee-2012

Medium-voltage alternating current (medium_voltage_electricity_input)

Record electricity supplied as 1-35 kV alternating current from the declared consumption mix. Do not merge this row with heat, steam, or fuel.

• Selected flow: alternating current; 1-35 kV; consumption mix; electricity mix 3d76981f-964a-4865-b588-0e067a2a1163
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / MJ
• Amount rule: Metered electricity attributable to preparation, spinning or twisting, plying, winding, conditioning, and local auxiliary equipment for the production lot.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_electricity
• Sources: eu-jrc-txt-bref-2023; eu-bat-textiles-2022

Process water (process_water_input)

Record water only when it crosses the process boundary for paper-strip moistening, wet spinning, conditioning, or cleaning attributable to the production lot.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Metered or tank-weighed process water attributable to the production lot.
• Value mode: Foreground record (foreground_record)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_process_water
• Sources: chummun-rosunee-2012; eu-jrc-txt-bref-2023

Mineral lubricating oil (mineral_lubricating_oil_input)

Record mineral lubricating oil only when it is applied to fibre or yarn during preparation, spinning, plying, or winding. Other formulated auxiliaries shall be represented by separate, chemically or commercially specific atomic cards in the foreground package.

• Selected flow: Mineral lubricating oil
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Net mass issued to and consumed by the production lot after documented returns.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_lubricating_oil
• Sources: eu-bat-textiles-2022

Waste flows

Elementary flows

Outputs

Product flows

Finished yarn (finished_yarn_output)

Record only yarn that meets the declared lot specification and reference-flow qualifiers.

• Selected flow: Yarn of vegetable textile fibres other than cotton (including flax, jute, coir and true hemp), paper yarn bf8e0cc2-c99b-43a9-b306-d31a7fb8c11f
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed net conforming yarn output at the declared moisture basis, excluding transport packaging and reusable carriers.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: 1 kg net finished yarn
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_finished_yarn
• Sources: unsd-cpc-3-0-26380; iso-2060-1994; iso-2061-2015

Waste flows

Discarded flax fibre (flax_fibre_waste)

Record this waste only for a flax-yarn lot and only when the discarded material leaves the process as flax fibre.

• Selected flow: Discarded flax fibre from yarn manufacture
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed discarded flax fibre sent to the declared waste destination.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_solid_wastes
• Sources: eu-jrc-txt-bref-2023

Discarded jute fibre (jute_fibre_waste)

Record this waste only for a jute-yarn lot and only when the discarded material leaves the process as jute fibre.

• Selected flow: Discarded jute fibre from yarn manufacture
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed discarded jute fibre sent to the declared waste destination.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_solid_wastes
• Sources: eu-jrc-txt-bref-2023

Discarded true hemp fibre (hemp_fibre_waste)

Record this waste only for a true-hemp-yarn lot and only when the discarded material leaves the process as true hemp fibre.

• Selected flow: Discarded true hemp fibre from yarn manufacture
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed discarded true hemp fibre sent to the declared waste destination.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_solid_wastes
• Sources: eu-jrc-bio-based-textiles-2025

Discarded coir fibre (coir_fibre_waste)

Record this waste only for a coir-yarn lot and only when the discarded material leaves the process as coir fibre.

• Selected flow: Discarded coir fibre from yarn manufacture
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed discarded coir fibre sent to the declared waste destination.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net finished yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_solid_wastes
• Sources: eu-jrc-txt-bref-2023

Discarded paper strip (paper_strip_waste)

Record this waste only for a paper-yarn lot and only when discarded paper strip leaves the process for waste management.

• Selected flow: Discarded paper strip from paper-yarn manufacture
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed discarded paper strip sent to the declared waste destination.
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net finished paper yarn from the same production lot
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_solid_wastes
• Sources: chummun-rosunee-2012

Elementary flows

No direct elementary-flow amount is prescribed. Measure and add each emitted substance as a separate elementary-flow card when the site has an applicable measurement, permit record, or mass-balance result; do not infer an emission from electricity, water, lubricant, or waste use.

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_subdivision	independently measurable routes, lots, and yarn grades	Avoid allocation by subdividing plant records by route, material, production lot, and independently metered operation wherever feasible.	eu-pef-2021
allocation_physical	inseparable co-products with a documented physical causal relationship	When subdivision is not feasible, apply the documented physical relationship that reflects how inputs and emissions change with the co-products; retain the formula and supporting measurements.	eu-pef-2021
allocation_economic_fallback	inseparable saleable co-products without a defensible physical relationship	Use contemporaneous net economic value only as a fallback, disclose prices, period, currency, and allocation factors, and test sensitivity against mass allocation.	eu-pef-2021
allocation_waste	discarded fibre and paper strip	Treat material sent to waste management as a waste output. Do not assign an avoided-product credit inside this plant-gate dataset unless a broader study applies and discloses a separate recycling or substitution method.	eu-pef-2021

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_inputs	yarn_manufacturing	flax_sliver_input, jute_fibre_input, hemp_fibre_input, coir_fibre_input, paper_strip_input	weighbridge, scale, batch issue, and return records	lot_id; material_identity; supplier; preparation_or_paper_grade; gross_mass; tare_mass; returned_mass; moisture_basis; timestamp	Reconcile receiving and lot-issue records to calibrated scale records and deduct documented returns.	kg	each lot	continuous over the reporting period	all reporting-site yarn lines	Sum net input by atomic material and lot; never merge different material identities.	calibration record; supplier specification; receiving record; batch issue and return record
cp_electricity	yarn_manufacturing	medium_voltage_electricity_input	electricity meter and production log	meter_id; voltage_level; supply_mix; opening_reading; closing_reading; unit; allocation_key; lot_id; timestamp	Use dedicated meters where available; otherwise allocate a reconciled submeter total using documented machine runtime and rated-load evidence.	original meter unit and MJ	each lot or shift	representative reporting period including all operating modes	all in-scope preparation, spinning or twisting, plying, winding, conditioning, and auxiliary equipment	Convert with a documented unit equation and divide by net conforming yarn mass.	meter calibration; utility invoice reconciliation; machine runtime log
cp_process_water	yarn_manufacturing	process_water_input	water meter, tank mass, or batch addition record	meter_or_vessel_id; purpose; route; opening_reading; closing_reading; volume_or_mass; temperature_or_density; lot_id; timestamp	Measure only process water attributable to the lot and retain evidence for any volume-to-mass conversion.	kg	each lot or shift	representative reporting period	paper moistening, wet spinning, conditioning, and attributable cleaning only	Sum attributable water mass and divide by net conforming yarn mass.	meter calibration; batch sheet; conversion record
cp_lubricating_oil	yarn_manufacturing	mineral_lubricating_oil_input	chemical issue and return record	product_name; composition_or_specification; container_id; issued_mass; returned_mass; lot_id; use_point; timestamp	Weigh issued and returned containers and assign only net consumption to the lot.	kg	each issue and lot	full reporting period	all in-scope use points	Sum net consumed mass by the exact product identity and divide by net conforming yarn mass.	scale calibration; safety data sheet; issue and return record
cp_finished_yarn	yarn_manufacturing	finished_yarn_output	finished-goods scale and quality release record	lot_id; gross_mass; tare_mass; net_mass; moisture_content; moisture_basis; material_identity; construction; tex; twist_direction; twist_level; treatment_state; package_form; release_status	Weigh conforming yarn separately from carriers and rejected yarn; retain the quality-release record and test conditions.	kg	each lot	full reporting period	all reporting-site yarn lines	Sum conforming net yarn at the declared moisture basis; rejected yarn is not reference product.	scale calibration; moisture test; ISO 2060 or equivalent record; ISO 2061 or equivalent record; lot release certificate
cp_solid_wastes	yarn_manufacturing	flax_fibre_waste, jute_fibre_waste, hemp_fibre_waste, coir_fibre_waste, paper_strip_waste	waste scale, container, and dispatch record	lot_id; exact_material_identity; container_id; gross_mass; tare_mass; destination; recovery_or_disposal_route; timestamp	Segregate and weigh each atomic waste stream; use a documented sampling and reconciliation method if continuous collection prevents lot-level weighing.	kg	each lot or waste dispatch	full reporting period	all in-scope waste collection points	Sum each exact waste material separately and divide by net conforming yarn mass.	scale calibration; waste transfer note; destination evidence; reconciliation record

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_net_mass	material, lubricant, finished-yarn, and waste records	net_mass = gross_mass - tare_mass - documented_returned_mass, with returned_mass omitted where not applicable.	gross_mass; tare_mass; returned_mass	net mass in kg
calc_normalized_exchange	every inventory row	normalized_exchange = attributable_exchange_amount / net_conforming_yarn_mass for the same lot and declared moisture basis.	attributable exchange amount; net conforming yarn mass	exchange amount per kg reference yarn	eu-pef-2021
calc_mass_reconciliation	each production lot	Reconcile atomic material inputs against finished yarn, separately weighed wastes, retained work in progress, and measured moisture change; investigate and disclose any residual rather than creating an unmeasured flow.	atomic material inputs; finished yarn; atomic wastes; work-in-progress change; measured moisture change	lot mass-reconciliation statement	eu-pef-2021

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	product and material identity	Declare one yarn route and one exact botanical fibre species or paper grade per dataset; record any additional material or emitted substance as its own atomic exchange.	supplier specification; batch record; product release record; Tiangong UUID where resolved
dq_measurement	mass, electricity, and water records	Use calibrated instruments and retain raw readings, units, conversion equations, allocation keys, and reconciliation evidence.	calibration certificates; meter logs; weigh tickets; calculation workbook
dq_temporal	reporting period	Cover a representative period including startup, normal operation, changeover, stoppage, and cleaning attributable to the product, or disclose excluded operating modes.	production calendar; downtime log; reporting-period rationale
dq_completeness	process and exchange coverage	Demonstrate that all in-scope operations and all material, energy, water, auxiliary, waste, and measured direct-emission exchanges are included or explicitly documented as not applicable.	completeness checklist and lot mass reconciliation; eu-pef-2021
dq_yarn_properties	reference product	Retain linear-density, twist, moisture, construction, treatment-state, and package-form evidence for the represented lot.	ISO 2060 or justified equivalent; ISO 2061 or justified equivalent; moisture test; lot specification
dq_representativeness	dataset publication	Assess and disclose technological, geographical, temporal, and precision representativeness and any proxy upstream dataset.	data-quality assessment following eu-pef-2021

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference_flow	reference product	Require exactly 1 kg net conforming yarn, the confirmed reference product UUID, Mass flow-property UUID, Units of mass unit-group UUID, and every required product qualifier.	unsd-cpc-3-0-26380; iso-2060-1994; iso-2061-2015
validate_route_material	starting material	Require exactly one declared route and only material cards that apply to the lot. Any other in-scope vegetable fibre shall be recorded with its exact species-specific atomic name and a verified Tiangong UUID or an explicit unresolved identity record.	unsd-cpc-3-0-26380
validate_atomic_inventory	all exchanges	Reject any card that combines different materials, chemicals, electricity supply scenarios, fuels, wastes, or elementary flows; every selected flow shall describe one atomic exchange.
validate_amount_evidence	all inventory amounts	Require foreground records or calculations linked to the collection protocols. Reject AI-estimated amounts and unsupported default ranges.	eu-pef-2021
validate_mass_balance	each production lot	Require a documented mass reconciliation of atomic material inputs, finished yarn, atomic wastes, work-in-progress change, and measured moisture change; unresolved residuals shall be disclosed and investigated.	eu-pef-2021
validate_boundary	foreground dataset	Require all directly controlled in-scope operations, utilities, auxiliaries, rejects, and measured emissions, plus linked upstream datasets for purchased inputs; disclose each treatment excluded from the delivered yarn state.	eu-jrc-txt-bref-2023; eu-bat-textiles-2022; eu-pef-2021
validate_allocation	shared operations and co-products	Require subdivision first and retain the physical or economic allocation evidence when allocation remains necessary.	eu-pef-2021

10. Published Dataset Profile

Field	Value
dataset_role	Foreground product-manufacturing dataset for one declared non-cotton vegetable-fibre yarn or paper-yarn route.
downstream_use	May support a reviewed secondary_dataset or background_dataset for textile, packaging, composite, craft, or other systems consuming the declared yarn.
allowed_use	Use for the declared material, yarn construction, treatment state, plant technology, geography, and reporting period after all unresolved identities are resolved or transparently retained for candidate review.
excluded_use	Do not represent cotton, animal-fibre, man-made-fibre, sewing-thread, rope, fabric, dyed, bleached, coated, or sized yarn production unless the changed identity and added processes are explicitly modelled. Do not use for comparative assertions without an independently reviewed complete life-cycle scope.
required_metadata	PCR id; route; material species or paper grade; upstream preparation state; yarn construction; tex; twist direction and level; moisture basis and content; treatment state; package form; plant geography; technology; reporting period; allocation method; electricity voltage and mix; waste destinations; source and dataset versions.
required_quality_disclosure	Instrument calibration; sampling and allocation methods; mass-reconciliation result; coverage gaps; operating modes; upstream proxies; technological, geographical, temporal, and precision representativeness; unresolved UUIDs.
update_trigger	Change in starting material, paper grade, spinning or twisting technology, yarn construction, treatment state, plant electricity supply, allocation basis, waste route, reporting period, or any resolved Tiangong identity.

11. Data Sources

Source id	Type	Reference	Used for
unsd-cpc-3-0-26380	official_guidance	United Nations Statistics Division, CPC Version 3.0 Structure, code 26380, 30 June 2025. https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv (retrieved 2026-08-12).	Product-category scope and reference-product identity.
eu-jrc-txt-bref-2023	official_guidance	European Commission Joint Research Centre, Best Available Techniques Reference Document for the Textiles Industry, January 2023. https://bureau-industrial-transformation.jrc.ec.europa.eu/reference/textiles-industry (retrieved 2026-08-12).	Fibre preparation, yarn-manufacturing boundary, utilities, auxiliaries, waste, and data coverage.
eu-bat-textiles-2022	official_guidance	Commission Implementing Decision (EU) 2022/2508 establishing BAT conclusions for the textiles industry. https://eur-lex.europa.eu/eli/dec_impl/2022/2508/oj/eng (retrieved 2026-08-12).	Textile process controls, resource records, mineral-oil relevance, and treatment boundary.
eu-jrc-bio-based-textiles-2025	official_guidance	European Commission Joint Research Centre, Bio-based textiles in a sustainable and circular bioeconomy, JRC140676. https://publications.jrc.ec.europa.eu/repository/handle/JRC140676 (retrieved 2026-08-12).	Flax and hemp value-chain stages and separation of upstream preparation from spinning and yarn treatment.
chummun-rosunee-2012	literature	Chummun, J.; Rosunee, S. Manufacture of Folded and Twisted Paper Yarn. Research Journal of Textile and Apparel 16(4), 93-99. https://doi.org/10.1108/RJTA-16-04-2012-B010.	Paper slitting, moistening, folding or twisting, and paper-yarn route decomposition.
iso-2060-1994	standard	ISO 2060:1994, Textiles — Yarn from packages — Determination of linear density (mass per unit length) by the skein method. https://www.iso.org/standard/6837.html (retrieved 2026-08-12).	Linear-density measurement and reference-product qualification.
iso-2061-2015	standard	ISO 2061:2015, Textiles — Determination of twist in yarns — Direct counting method. https://www.iso.org/standard/65146.html (retrieved 2026-08-12).	Twist direction and level measurement.
eu-pef-2021	official_guidance	Commission Recommendation (EU) 2021/2279 on the use of Environmental Footprint methods. https://eur-lex.europa.eu/eli/reco/2021/2279/2021-12-30/eng (retrieved 2026-08-12).	Functional unit, system boundary, allocation hierarchy, company-specific data, completeness, data quality, and validation.