T/HEBQS 025-2024 Dipped paper faced plywood with adhesive laminate

Scope

Main technical content: **Table 1: Appearance Quality Requirements for Defects** **Superior Grade** **First Grade** **Passing Grade** **Front** **Back** **Front** **Back** **Dry Stains** Not allowed 3 stains, total area not exceeding 0.3% of the board surface 3 stains, total area not exceeding 1% of the board surface 2% of the board surface **Wet Stains/Spots** Not allowed 3 mm2–20 mm2 per sheet, allowed 1 spot/sheet 5 mm2–30 mm2 per sheet, allowed 3 spots, not allowed to be concentrated within any 1 square meter 5 mm2–30 mm2 per sheet, allowed 5 spots, not allowed to be concentrated within any 1 square meter **Surface Scratches** Not allowed Length ≤ 100 mm per sheet, allowed 2 spots, not allowed to be concentrated within any 1 square meter Length ≤ 200 mm per sheet, allowed 3 spots, not allowed to be concentrated within any 1 square meter Length ≤ 200 mm per sheet, allowed 5 spots, not allowed to be concentrated within any 1 square meter **Surface Indentations** Not allowed 20 mm2–50 mm2 per sheet, allowed 2 spots, not allowed to be concentrated within any 1 square meter 20 mm2–50 mm2 per sheet, allowed 3 spots, not allowed to be concentrated within any 1 square meter 20 mm2–50 mm2 per sheet, allowed 5 spots, not allowed to be concentrated within any 1 square meter **Transparent Backs** Not allowed Obvious defects not allowed **Board Misalignment** Not allowed **Surface Pores** Not allowed Total area not exceeding 1% of the board surface Total area not exceeding 3% of the board surface Total area not exceeding 5% of the board surface **Color Mismatch** Obvious mismatch not allowed **Uneven Gloss** Obvious uneven gloss not allowed **Bubbles/Bags** Not allowed **Board Tearing** Not allowed ≤ 100 mm, allowed 1 spot/sheet ≤ 100 mm, allowed 3 spots/sheet **Partial Paper Lack** ≤ 10 mm2, allowed 1 spot/sheet **Chipped Edges** ≤ 3 mm not allowed --- **Key Notes:**

Development Information

Related Standards