AS NZS 1859.3:2017 – Reconstituted wood-based panels—Specifications Part 3: Decorative overlaid wood panels
AS NZS 1859.3:2017 – Reconstituted wood-based panels—Specifications Part 3: Decorative overlaid wood panels.
2.1 DIMENSIONAL TOLERANCES
When determined in accordance with AS/NZS 4266.1, the actual dimensions of substrate panels shall comply with the requirements of AS/NZS 1859, Parts 1, 2 and 4, as applicable.
1 Flatness requirements are only applicable to decorative overlaid panels at timc of delivery from manufacturer. Numerous factors, including changes in temperature and relative humidity in storage and fabrication areas at building sites, may cause boards and panels to bow or twist irreveibly.
2 Care should be taken in specifying unbalanced overlaid panels, that is, panels laminated on one side only, or with significantly different overlays on each side. Supply of panels laminated on one side with PVC film, paper foils, or melamine should be agreed between buyer and supplier.
When inspected according to AS/NZS 4266.2, the surface layer of panels shall appear to be continuous. The following defects are permitted:
(a) Spots, dirt and similar surface defects The admissible size of such defects is based on a maximum area equivalent to 1.0 mm/rn of panel and is proportional to the panel size under inspection. The total admissible area of contamination may be concentrated in one spot or dispersed over an unlimited area of smaller defects provided Item (c) below is complied with.
(b) Fibres, hairs, scratches The admissible area of defects is based on a maximum contaminated length equivalent to 1 0 mni2/m2 of panel and is proportional to the panel size under inspection. The total admissible area of contamination may be concentrated in one spot or dispersed over an unlimited area of smaller defects provided Item (c) below is complied with.
(c) Combination of surface defects When defect types described in Items (a) and (b) above occur in the same panel, then the maximum level for each of the two types of defect shall not exceed half of the level prescribed in Items (a) and (b) above.
NOTE: These permitted surface defects are consistent with requirements for high pressure decorative laminate according to AS/NZS 2924.1.
Faults not permitted include faults showing through from the substrate to the surface and air bubbles, blisters, craters or faults in the decorative layer.
Imperfections and sawing defects are permitted within the overtrim margin.
2.2.4 Colour, pattern and surface finish
If colour, pattern and surface finish are assessed against other standards or customer colour samples, assessment shall be made under the same conditions specified in Clause 2.2.1.
All substrates used to manufacture decorative overlaid wood panels should comply with the requirements in AS/NZS 1859.1, AS/NZS 1859.2 and AS/NZS 1859.4, as applicable. Alternatively, validation of’ properties for decorative overlaid products shall be tested in their final shape and form.
Decorative overlaid wood panels shall be marked according to classification in accordance with Clause 1.5, or the appropriate product name that would indicate the overlay class i fi cation.
Packs or individual panels of decorative overlaid wood panels shall have the following information legibly attached at least once:
(a) The manufacturer’s name or registered mark.
(b) Reference to this Standard, i.e. AS/NZS 1859.3.
(c) Classification of overlay and type of substrate (i.e. MDF or particleboard) or brand name that would indicate the overlay classification and substrate type.
(d) Classification of substrate, that is, the word ‘Standard (STD)’, or the letters ‘MR’, as appropriate to the product.
(e) Identification of the face side on each sheet, where applicable.
NOTE: If relevant, the country of manufacture should be included in the marking label.