In the birch plywood inspection industry, edge quality issues refer to defects that just meet the critical value of national standards or customer specifications, a vague area where products can be judged either qualified or unqualified, which is the most controversial point in trade and quality inspection. This paper clarifies common edge scenarios, judgment basis and practical methods from six …

In the birch plywood quality inspection industry, edge-case quality issues refer to defects that just fall around the critical values of national standards or customer specifications, forming a fuzzy zone where the products can be judged either qualified or unqualified. These issues are the most prone to disputes in trade and quality inspection. Taking the birch plywood industry in Thailand, …

Category (类别)​​​​​​​ ​​​​​​​​​​​​​​​​​​​​Physiochemical Properties (理化)​1. Dry bonding strength: 1.55 N/mm² (Grade II); Wet bonding strength: 1.35 N/mm² (Grade II); Impregnation peeling: 11.1% (Grade II)​GB/T 17657-2013: Grade II (≥1.6 N/mm² dry bonding, ≥1.4 N/mm² wet bonding, ≤11% impregnation peeling); Client specs: ≥1.7 N/mm² dry bonding, ≥1.5 N/mm² wet bonding (US market), ≤10% impregnation peeling (EU market)​Test per GB/T 17657-2013; Calculate average …