Knotted netting of twine, cordage or rope; made up nets of textile materials; articles of yarn, strip, twine, cordage, rope or cables n.e.c.

1. Scope and Applicability

This PCR governs gate-to-gate foreground data packages for products demonstrably within CPC 27320: knotted netting made from twine, cordage or rope; made-up nets of textile materials; and other articles of yarn, strip, twine, cordage, rope or cables not elsewhere classified. Covered routes convert received yarn, monofilament, strip, twine, cordage, rope, cable or preformed netting into a finished net or other made-up textile article by knotting, netting, cutting, tapering, joining, sewing, splicing, mounting, heat-setting, washing, dyeing, coating, finishing and packing, but only for the operations actually performed by the reporting facility.

Model polyamide, polyester, polypropylene, polyethylene and natural-fibre routes separately. Do not average across polymer or fibre families, knotted and knotless constructions, monofilament and multifilament products, or netting and non-net articles unless foreground evidence demonstrates that the aggregated dataset remains representative. Every auxiliary chemical, coating, dye, pigment, stabilizer, adhesive, lubricant, packaging component, waste and direct emission used by the actual route must be added as its own atomic exchange.

Production of polymers, fibres, yarn, strip, twine, cordage, rope, cable or purchased netting before receipt is outside the foreground gate and requires an upstream dataset. Fishing or aquaculture operations, use and maintenance of nets, installation at the user site, lost fishing gear, collection after use, and end-of-life treatment are outside this gate-to-gate PCR. Apparel, ordinary woven or knitted fabric, metal wire mesh, and textile articles classified outside CPC 27320 are excluded.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.food-products-beverages-and-tobacco-textiles-apparel-and-leather-products.textile-articles-other-than-apparel.knotted-netting-of-twine-cordage-or-rope-made-up-nets-of-textile-materials-articles-of-264039fb
classification_refs	CPC 3.0: 27320 - Knotted netting of twine, cordage or rope; made up nets of textile materials; articles of yarn, strip, twine, cordage, rope or cables n.e.c.
covered_products	Knotted textile netting; made-up fishing, aquaculture, sports, safety, cargo, agricultural or other textile nets; and other made-up articles of yarn, strip, twine, cordage, rope or cable demonstrably classified as CPC 27320
excluded_products	Unconverted twine, cordage, rope or cable classified as CPC 27310; ordinary woven, knitted, nonwoven or lace fabric; apparel; metal wire mesh; polymer resin, fibre and yarn manufacture; products classified elsewhere by a more specific function
representative_product	A finished made-up textile net or related article at the manufacturing-facility gate, with material family, construction, dimensions, performance specification and finish declared
production_route	Route-specific knotting or net formation and/or conversion of purchased netting or cordage by cutting, tapering, joining, sewing, splicing or mounting, with only the actual wet, thermal, coating, accessory and packing operations included
market_state	Conforming finished product at the factory gate, reported on net product mass excluding removable packaging and at a declared moisture or conditioning state

3. Reference Flow

Field	Value
What	A finished textile net or other made-up article that meets the declared CPC 27320 product specification
How much	1,000 kg net mass of conforming finished product, excluding removable packaging
How well	Meets the declared material, construction, mesh or article geometry, dimensions, dry or wet strength, finish, accessory and acceptance-test specification
How long or cycle	One production lot at the manufacturing-facility gate; service life is not part of this gate-to-gate unit
reference_flow_link	The functional unit is realized by exactly 1,000 kg net reference product at the declared conditioning state

Field	Value
Reference amount	1,000 kg net finished product
Reference product flow	Knotted netting of twine, cordage or rope, made up nets of textile materials, articles of yarn, strip, twine, cordage, rope or cables n.e.c. e3759580-0bc6-4410-a0fe-f8b239ba715d
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	article form and intended application; CPC 27320 scope confirmation; polymer or fibre family and mass fractions; virgin or recovered content basis; monofilament, multifilament, twisted, braided or other yarn construction; linear density or diameter; knotted or knotless construction; knot type; mesh geometry and opening or non-net article dimensions; dry or wet test condition; breaking-force requirement; colour; coating, dyeing and other finish; accessories and their materials; net product mass basis; moisture or conditioning state; production geography; technology route; reporting period

The Tiangong reference identity was discovered by hybrid search and then confirmed by direct state-code-100 reads as a public Product flow classified to CPC 27320 with Mass as its quantitative reference. The reference unit is kg in the verified Units of mass group. Category scope and required technical qualifiers are supported by un-cpc-v3-2025, fao-fisheries-assessment-2013, iso-1107-2017, iso-858-1973, iso-1805-2006, iso-1806-2002 and iso-16663-1-2009.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_net_mass	Reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Report exactly 1,000 kg net conforming product. Exclude boxes, film, straps, pallets and other removable packaging.
conditioned_mass_basis	Textile inputs, product and textile wastes	Mass	kg	Record the conditioning or moisture state for each weighed textile stream. Do not combine dry and as-received masses without a measured conversion.
material_composition	Product and material inputs	Mass fraction	kg/kg	Record each polymer, natural fibre, coating and permanently attached accessory material separately; disclosed mass fractions must reconcile to the product specification.
linear_density_or_diameter	Yarn, twine, monofilament and multifilament inputs	Linear density or diameter	tex, denier or mm	Preserve the supplier/test basis and conversion. Do not treat denier, tex and diameter as interchangeable without a documented material-specific relation.
mesh_dimension	Netting products	Length	mm	State the mesh definition and test method. For fishing-net mesh opening measured under ISO 16663-1, retain the gauge method and test condition.
breaking_force_condition	Netting yarn and netting	Force	N	Report whether the ISO 1805 or ISO 1806 result is for dry or wet conditioning and identify whether yarn, knotted yarn or mesh breaking force is measured.
energy_carrier_separation	Electricity and purchased steam	Energy or delivered mass	kWh, MJ or kg	Keep electricity and steam separate. Preserve voltage, geography, steam condition, condensate-return assumption and any conversion factor.
water_balance	Wet finishing	Volume or Mass	m3 or kg	Reconcile intake, reuse, evaporation, product carry-over and wastewater on one declared basis; state density for mass-volume conversions.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Received yarn, monofilament, strip, twine, cordage, rope, cable or preformed textile netting with supplier, material family, composition, construction, dimensions, finish, moisture basis and delivery form declared
starting_condition_role	Purchased or interfacility product input whose upstream fibre, polymer and intermediate manufacturing burdens are represented by route-specific upstream datasets
product_classification_scope	CPC 27320 only; ambiguous fabric, apparel, unconverted cordage, metal mesh or function-specific articles require classification review before this PCR is used
recursive_input_rule	When purchased netting or another input already falls within CPC 27320, use its supplier dataset as an upstream product input and inventory only the incremental conversion at the reporting facility; do not recreate upstream operations already represented
upstream_dataset_requirement	Use material-, construction-, geography- and route-specific datasets for every received product input; do not substitute an unconditional average across PA, PES, PP, PE, natural fibre, virgin, recovered, monofilament, multifilament or preformed-netting routes
disclosure	Declare the input gate, actual unit operations, material and construction route, wet and thermal operations, each chemical and accessory, packaging treatment, output test condition, excluded operations, upstream data gaps and any same-category purchased input

rule_id	Applies to	rule	source_ids
boundary_gate_to_gate	Foreground facility	Include receipt and internal handling, actual knotting or net formation, cutting, tapering, joining, sewing, splicing, mounting, heat-setting, wet finishing, coating, drying, inspection, repair of manufacturing defects and packing through the factory gate.	un-cpc-v3-2025; fao-fisheries-assessment-2013; eu-pef-2021
boundary_route_specificity	Product routes	Include only operations performed for the declared product lot and keep materially different polymers, constructions, finishes and product forms separate.	fao-fisheries-assessment-2013; iso-1107-2017; eu-pef-2021
boundary_upstream_inputs	Received products	Link every received yarn, twine, rope, netting or accessory to an upstream dataset; a supplier-free material label is insufficient for cradle-to-gate use.	eu-pef-2021
boundary_inventory_completeness	Inputs and outputs	Add every actual chemical, coating, dye, pigment, stabilizer, adhesive, lubricant, packaging component, waste and direct emission as a separate atomic exchange; no grouped carrier, chemical, packaging or waste row is allowed.	eu-pef-2021

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
net_article_manufacture	Net or textile-article formation, finishing and packing	required		Gate-to-gate foreground process covering only the declared unit operations	1,000 kg net conforming CPC 27320 product

Process: Net or textile-article formation, finishing and packing (net_article_manufacture)

Inputs

Product flows

Polyamide netting yarn (polyamide_netting_yarn)

Polyamide netting yarn is recorded only for lots that consume this exact polymer and received yarn form.

• Selected flow: Polyamide netting yarn
• Flow property / unit: Mass / kg
• Amount rule: Weighed receipts adjusted for stock change and normalized to the reference product
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_receipts
• Sources: fao-fisheries-assessment-2013

Polyester netting yarn (polyester_netting_yarn)

Polyester netting yarn is recorded separately from every other polymer.

• Selected flow: Polyester netting yarn
• Flow property / unit: Mass / kg
• Amount rule: Weighed receipts adjusted for stock change and normalized to the reference product
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_receipts
• Sources: fao-fisheries-assessment-2013

Polypropylene netting yarn (polypropylene_netting_yarn)

Polypropylene netting yarn is recorded only when it physically crosses the facility boundary.

• Selected flow: Polypropylene netting yarn
• Flow property / unit: Mass / kg
• Amount rule: Weighed receipts adjusted for stock change and normalized to the reference product
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_receipts
• Sources: fao-fisheries-assessment-2013

Polyethylene netting yarn (polyethylene_netting_yarn)

Polyethylene netting yarn is recorded separately from polyethylene rope and purchased netting.

• Selected flow: Polyethylene netting yarn
• Flow property / unit: Mass / kg
• Amount rule: Weighed receipts adjusted for stock change and normalized to the reference product
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_receipts
• Sources: fao-fisheries-assessment-2013

Cotton netting twine (cotton_netting_twine)

Cotton netting twine represents only cotton; another natural fibre requires its own card in the produced dataset.

• Selected flow: Cotton netting twine
• Flow property / unit: Mass / kg
• Amount rule: Weighed receipts adjusted for stock change and normalized to the reference product
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_receipts
• Sources: un-cpc-v3-2025

Preformed polyamide netting (preformed_polyamide_netting)

Purchased unfinished polyamide netting is recorded for made-up-net conversion routes and not combined with yarn.

• Selected flow: Preformed polyamide netting
• Flow property / unit: Mass / kg
• Amount rule: Weighed receipts adjusted for stock change and normalized to the reference product
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_receipts
• Sources: un-cpc-v3-2025

Preformed polyethylene netting (preformed_polyethylene_netting)

Purchased unfinished polyethylene netting is recorded as a distinct received intermediate.

• Selected flow: Preformed polyethylene netting
• Flow property / unit: Mass / kg
• Amount rule: Weighed receipts adjusted for stock change and normalized to the reference product
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_receipts
• Sources: un-cpc-v3-2025

Polyethylene rope (polyethylene_rope)

Polyethylene rope is recorded when used as an edge, headline, footrope, mounting member or article component.

• Selected flow: Polyethylene rope
• Flow property / unit: Mass / kg
• Amount rule: Weighed issue to the production lot minus documented return to stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_receipts
• Sources: fao-fisheries-assessment-2013

Polypropylene rope (polypropylene_rope)

Polypropylene rope is recorded separately from polyethylene rope and polypropylene yarn.

• Selected flow: Polypropylene rope
• Flow property / unit: Mass / kg
• Amount rule: Weighed issue to the production lot minus documented return to stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_receipts
• Sources: fao-fisheries-assessment-2013

Polyamide sewing thread (polyamide_sewing_thread)

Polyamide sewing or joining thread is recorded when used to assemble panels or attach components.

• Selected flow: Polyamide sewing thread
• Flow property / unit: Mass / kg
• Amount rule: Weighed or stock-controlled issue to the production lot
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_receipts
• Sources: fao-fisheries-assessment-2013

Low-voltage electricity at facility meter (forming_electricity)

Electricity for netting machines, cutters, sewing, splicing, heat-setting, ventilation, drying and packing is metered as one facility supply only when the voltage and supply mix are the same.

• Selected flow: Electricity, low voltage, facility supply
• Flow property / unit: Energy / kWh
• Amount rule: Submetered use or documented equipment power multiplied by operating time
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources: eu-pef-2021

Supplied freshwater for wet finishing (process_water)

Freshwater supplied to washing, dyeing, coating preparation or other wet finishing is recorded when that route occurs.

• Selected flow: Freshwater, supplied process water
• Flow property / unit: Volume / m3
• Amount rule: Metered intake allocated to the declared product lot
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_water_steam_records
• Sources: eu-pef-2021

Purchased saturated steam (purchased_steam)

Purchased saturated steam is recorded only when delivered across the facility boundary for heat-setting, washing, dyeing, drying or coating.

• Selected flow: Steam, saturated, purchased
• Flow property / unit: Mass / kg
• Amount rule: Supplier meter or reconciled boiler-house delivery record at declared pressure and condensate-return condition
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_water_steam_records
• Sources: eu-pef-2021

Corrugated board box (corrugated_board_box)

Corrugated board boxes supplied with the product are recorded by actual issued mass and excluded from reference product mass.

• Selected flow: Corrugated board box
• Flow property / unit: Mass / kg
• Amount rule: Weighed or specification-based box mass multiplied by boxes used
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources: eu-pef-2021

Waste flows

Elementary flows

Outputs

Product flows

Conforming CPC 27320 reference product (reference_product_output)

The output is weighed after final conditioning and inspection; removable packaging is excluded.

• Selected flow: Knotted netting of twine, cordage or rope, made up nets of textile materials, articles of yarn, strip, twine, cordage, rope or cables n.e.c. e3759580-0bc6-4410-a0fe-f8b239ba715d
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Conforming net output normalized to exactly 1,000 kg
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_product_output
• Sources: un-cpc-v3-2025

Waste flows

Polyamide netting offcuts (polyamide_offcuts)

Clean or contaminated polyamide offcuts are weighed separately and their destination is declared.

• Selected flow: Polyamide netting offcuts
• Flow property / unit: Mass / kg
• Amount rule: Weighed waste containers adjusted for stock and verified same-line reuse
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_records
• Sources: zlaugotne-fishing-net-waste-2025

Polyester netting offcuts (polyester_offcuts)

Polyester offcuts are not combined with polyamide or polyolefin offcuts.

• Selected flow: Polyester netting offcuts
• Flow property / unit: Mass / kg
• Amount rule: Weighed waste containers adjusted for stock and verified same-line reuse
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_records
• Sources: zlaugotne-fishing-net-waste-2025

Polypropylene netting offcuts (polypropylene_offcuts)

Polypropylene offcuts are recorded as one polymer-specific waste exchange.

• Selected flow: Polypropylene netting offcuts
• Flow property / unit: Mass / kg
• Amount rule: Weighed waste containers adjusted for stock and verified same-line reuse
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_records
• Sources: zlaugotne-fishing-net-waste-2025

Polyethylene netting offcuts (polyethylene_offcuts)

Polyethylene offcuts are recorded separately from polypropylene and mixed waste.

• Selected flow: Polyethylene netting offcuts
• Flow property / unit: Mass / kg
• Amount rule: Weighed waste containers adjusted for stock and verified same-line reuse
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_records
• Sources: zlaugotne-fishing-net-waste-2025

Wastewater from textile-net finishing (finishing_wastewater)

Wastewater transferred to on-site or external treatment is recorded separately from freshwater intake and direct water emissions.

• Selected flow: Wastewater from textile-net finishing
• Flow property / unit: Volume / m3
• Amount rule: Metered discharge or reconciled wet-process water balance
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_records
• Sources: eu-pef-2021

Discarded corrugated board boxes (waste_corrugated_board)

Corrugated boxes discarded within the foreground boundary are weighed as a distinct waste flow.

• Selected flow: Waste corrugated board box
• Flow property / unit: Mass / kg
• Amount rule: Weighed discarded boxes net of documented return or reuse
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg net reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_records
• Sources: eu-pef-2021

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	rule	source_ids
allocation_avoid	Shared lines and utilities	Prefer submetering, lot records, time records and physical separation so allocation is avoided.	eu-pef-2021
allocation_physical_relation	Unavoidable shared inputs and outputs	When separation is impossible, use a documented causal physical relation such as machine time, metered energy, wet-process batch load or net product mass; do not default to revenue.	eu-pef-2021
allocation_multi_output_disclosure	Saleable offcuts or co-products	Keep gross output and waste records visible, state whether the secondary output remains a waste or becomes a co-product, and disclose the allocation basis and sensitivity.	eu-pef-2021; zlaugotne-fishing-net-waste-2025
allocation_recycling_boundary	Internal reuse and exported recycling	Subtract same-line reuse only when its return is measured and does not double count upstream burden. Report exported recycling destination separately and do not claim an avoided burden inside this gate-to-gate dataset without an explicitly declared downstream model.	eu-pef-2021; zlaugotne-fishing-net-waste-2025

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_receipts	net_article_manufacture	Textile and assembly material inputs	Purchase, goods-receipt, issue and stock records	supplier; material identity; grade; construction; lot; opening stock; receipts; issues; returns; closing stock; mass; moisture basis	Reconcile lot issues and stock change to production records	kg	Each lot with monthly reconciliation	Same representative period as output	Reporting facility and declared outsourced operations	Sum by exact material identity and product lot; no cross-polymer grouping	Supplier specification, weighbridge or calibrated scale record, stock reconciliation
cp_energy_records	net_article_manufacture	Electricity input	Meter and equipment runtime records	meter id; voltage; supply contract; start/end reading; machine power; runtime; lot	Prefer submeter; otherwise documented power-time calculation	kWh	Per batch, shift or meter interval	At least one representative production period	In-scope equipment and shared services	Allocate shared use by a documented causal driver	Meter calibration, invoice reconciliation, runtime log
cp_water_steam_records	net_article_manufacture	Freshwater and purchased steam	Meter and supplier records	water meter; steam meter; pressure; temperature; condensate return; batch; start/end reading	Meter each carrier separately and reconcile water balance	m3 or kg	Per batch or meter interval	Same period as wet/thermal production	In-scope wet and thermal operations	Normalize only after carrier-specific reconciliation	Calibration, supplier invoice, water balance
cp_packaging_records	net_article_manufacture	Packaging input	Packing bill and material specification	component id; material; unit mass; units used; returns; recycled content	Weigh representative component or use verified specification	kg	Each packaging specification and lot	Current packaging design during reporting period	Product dispatched from reporting facility	Sum each atomic packaging component separately	Supplier specification and packing record
cp_product_output	net_article_manufacture	Reference product output	Batch, scale and quality-release records	product id; lot; gross mass; packaging tare; net mass; conditioning state; rejected mass; test result	Calibrated weighing after declared conditioning and quality release	kg	Every lot	Complete reporting period	All conforming output in scope	Sum net conforming output only	Scale calibration, test report, release record
cp_waste_records	net_article_manufacture	Polymer-specific offcuts, wastewater and packaging waste	Waste container, meter, transfer and destination records	waste identity; polymer; contamination; mass or volume; same-line return; destination; receiver; date	Weigh each waste stream or meter wastewater; verify transfers	kg or m3	Each container, transfer or discharge interval	Complete reporting period	All in-scope waste leaving or recirculating within facility	Keep waste identities and destinations separate; subtract only verified same-line return	Scale or meter calibration, transfer note, receiver evidence

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_reference_normalization	All inventory rows	normalized amount = period row amount / period net conforming output × 1,000 kg	Reconciled row amount; net conforming output	Amount per 1,000 kg reference product	eu-pef-2021
calc_material_balance	Textile materials	input mass + opening WIP = conforming product + exported waste + verified emissions + closing WIP; explain measured differences	Material receipts/issues; product mass; waste; WIP	Polymer- and lot-specific mass-balance residual	eu-pef-2021
calc_mesh_test_link	Net products	Link reported mesh dimension and breaking force to the declared specimen conditioning and ISO test method; no conversion may erase dry/wet or yarn/mesh distinction	Test report; conditioning record; product lot	Qualified product performance record	iso-1805-2006; iso-1806-2002; iso-16663-1-2009

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	Reference product and materials	Retain CPC scope determination, product drawing/specification, polymer or fibre identity, construction, dimensions, finish and supplier lot links.	Classification record, bill of materials, supplier specification, test report
dq_temporal	All foreground data	Use a common representative period and disclose shutdowns, product-change trials, abnormal scrap and changes in route or packaging.	Production calendar, meter coverage, exception log
dq_measurement	Mass, energy, water, steam and tests	Use calibrated instruments or documented supplier records; retain units, conversions, conditioning state and uncertainty or resolution.	Calibration certificate, invoice reconciliation, laboratory record
dq_completeness	Process inventory	Reconcile all material and energy inputs, product, wastes, wastewater and measured direct emissions; document every exclusion and its basis.	Mass balance, water balance, energy reconciliation, exclusion register
dq_traceability	Allocation and waste destination	Preserve the causal allocation driver, same-line reuse evidence, waste receiver and treatment route; do not infer recycling from a collection label alone.	Allocation worksheet, transfer note, recycler acceptance record

9. Validation Rules

rule_id	Applies to	rule	source_ids
validation_identity	Dataset identity	Fail if CPC 27320 scope, article form, material family, construction, product dimensions or conditioning state is absent or contradicts the reference flow.	un-cpc-v3-2025; fao-fisheries-assessment-2013
validation_reference_mass	Quantitative reference	Fail unless net conforming product equals exactly 1,000 kg after normalization and removable packaging is excluded.	eu-pef-2021
validation_atomic_inventory	Inventory rows	Fail if a row groups multiple polymers, energy carriers, chemicals, packaging components, waste streams or emissions, or if a UUID is used without exact hybrid and state-code-100 direct verification.	eu-pef-2021
validation_route_and_tests	Production and quality	Fail if the actual unit operations are undisclosed or a mesh/breaking result lacks the applicable definition, test method and dry/wet condition.	iso-1107-2017; iso-1805-2006; iso-1806-2002; iso-16663-1-2009
validation_mass_balance	Textile materials	Fail if material inputs, output, waste and WIP do not reconcile within a declared measured tolerance or if the residual is hidden by allocation.	eu-pef-2021
validation_waste_destination	Offcuts and wastewater	Fail if polymer-specific manufacturing scraps or wastewater are omitted when generated, or if reuse, recycling, treatment and disposal destinations are not distinguished.	zlaugotne-fishing-net-waste-2025; eu-pef-2021

10. Published Dataset Profile

Field	Value
dataset_role	Route-, product- and facility-specific foreground dataset for manufacturing CPC 27320 textile nets and related made-up articles
downstream_use	secondary_dataset; background_dataset when upstream product inputs are complete and data quality is adequate
allowed_use	Product-specific cradle-to-gate models, supplier comparisons and hotspot studies for the declared material, construction, finish, geography and period
excluded_use	Unqualified cross-polymer averages; use-stage fishing or aquaculture modelling; lost-gear impacts; end-of-life claims; products outside CPC 27320; comparative assertions where required test, allocation or data-quality disclosures differ materially
required_metadata	CPC scope; article form and application; bill of materials; polymer/fibre and recovered-content basis; yarn and net construction; dimensions and mesh definition; dry/wet test condition; breaking-force method; actual process route; finish and accessories; net mass and moisture basis; geography; period; upstream datasets; allocation; packaging; waste destinations
required_quality_disclosure	Primary-data share; meter and scale coverage; test methods; mass-, water- and energy-balance residuals; allocation drivers; supplier-data substitutions; unresolved UUIDs; exclusions; waste receiver evidence; representativeness limitations
update_trigger	Change in material family or recovered content, yarn/net construction, product form, mesh or strength specification, process technology, finish chemistry, supplier route, packaging, allocation, waste destination, geography, or a material shift in foreground performance

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-v3-2025	official_guidance	United Nations Statistics Division, CPC Version 3.0 Explanatory Notes, subclass 27320, 2025. https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Exp_Notes_30Jun2025.pdf	Category scope and exclusions
fao-fisheries-assessment-2013	official_guidance	FAO, Guidelines for the fisheries and aquaculture sector on damage and needs assessments in emergencies, Appendix A2.2.2, 2013. https://www.fao.org/docrep/019/i3433e/i3433e.pdf	Net material families, yarn construction, linear density/diameter, mesh and specification fields
iso-1107-2017	standard	ISO 1107:2017, Fishing nets — Netting — Basic terms and definitions. https://www.iso.org/standard/72227.html	Netting terminology and dimensional definitions
iso-858-1973	standard	ISO 858:1973, Fishing nets — Designation of netting yarns in the Tex System. https://www.iso.org/standard/5237.html	Netting-yarn designation and linear-density disclosure
iso-1805-2006	standard	ISO 1805:2006, Fishing nets — Determination of breaking force and knot breaking force of netting yarns. https://www.iso.org/standard/30041.html	Yarn and knot breaking-force test condition
iso-1806-2002	standard	ISO 1806:2002, Fishing nets — Determination of mesh breaking force of netting. https://www.iso.org/standard/28360.html	Mesh breaking-force test condition
iso-16663-1-2009	standard	ISO 16663-1:2009, Fishing nets — Method of test for the determination of mesh size — Part 1: Opening of mesh. https://www.iso.org/standard/45350.html	Objective mesh-opening measurement
eu-pef-2021	official_guidance	European Commission Recommendation (EU) 2021/2279, Annex I, Product Environmental Footprint Method. https://eur-lex.europa.eu/eli/reco/2021/2279/2021-12-30/eng	Functional unit, boundary, foreground data, completeness, allocation, packaging, waste and data quality rules
zlaugotne-fishing-net-waste-2025	literature	Zlaugotne, B., Pubule, J., and Gusca, J. (2025), Fishing net waste management: quantification and valorization, Frontiers in Marine Science 12:1607436. https://doi.org/10.3389/fmars.2025.1607436	Separate measurement of manufacturing scraps and explicit recycling or treatment scenarios