T/CNFPIA 3007-2019 Ultra-thin High Density Fiber Board

Scope

Scope: This standard specifies the terminology, definitions, classification, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of ultra-thin high-density fiberboards. This standard applies to ultra-thin high-density fiberboards. Main technical content: 3. Terminology and definitions: The following terms defined in GB/T 18259-2018 apply to this document. Ultra-thin high-density fiberboard: A fiberboard with a thickness of less than 1.5 mm and a nominal density of not less than 0.80 g/cm³. Surface coarse fiber: Large-sized fibers visible to the naked eye on the surface of ultra-thin high-density fiberboards, with a length greater than 5 mm and a width greater than 0.5 mm. Broken stripe figure: Stripe-like cracks or fissures formed on the surface of the product during continuous production. Surface hard spot: Hard spots formed locally on the surface of the product during the heat pressing process due to uneven fiber layup, etc. 4. Requirements 4.1 Specifications and tolerances 4.1.1 Thickness: The nominal thickness is less than 1.5 mm. 4.1.2 Dimensions: The nominal width is 1220~2440 mm, and the length is 2440~4880 mm. Products with other dimensions can be produced upon agreement between the supplier and the purchaser. 4.1.3 Dimensional tolerances shall comply with Table 1. Table 1: Dimensional tolerances of ultra-thin high-density fiberboards 4.1.4 Verticality: Less than 2 mm/m. 4.2 Appearance quality The appearance quality of ultra-thin high-density fiberboards is divided into two grades: excellent and qualified. The appearance quality of ultra-thin high-density fiberboards shall comply with Table 2. Table 2: Appearance quality requirements of ultra-thin high-density fiberboards Serial number Defect name Quality requirements Allowable range Excellent Qualified 1 Oil stains, spots, and foreign matter Single area not greater than or equal to 20 mm2 Not allowed 3 Delamina

Development Information

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