Grading Rules

Grading Rules

Sample inspection of 100 batches of wood-based panels and 22 batches of unqualified products

Sample inspection of 100 batches of wood-based panels and 22 batches of unqualified products The main unqualified items are: formaldehyde emission; internal bonding strength; internal bonding strength; surface bonding strength; static bending strength; elastic modulus; water absorption thickness expansion rate and so on. The formaldehyde emission project mainly examines whether …

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MEDIUM DENSITY OVERLAYS (MDO) HIGH DENSITY OVERLAYS (HDO) AND FILMS

Overlays Original Source http://paneltechintl.com MEDIUM DENSITY OVERLAYS (MDO) Heavy kraft paper based products that are first saturated and cured, then coated with our own PetroFree™ phenolic glue resin for application directly to hardwood or softwood plywood in a hot press. Paneltech’s standard MDO products meet the requirements of PS 1-07 and …

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MDO Grades :) Sign grade plywood and Paint Grade ,Construction Grades

MDO Grades 🙂 Sign grade plywood and Paint Grade ,Construction Grades Overlaid Panels (HDO and MDO) Original Source https://www.apawood.org/overlaid Demanding applications such as concrete forming, exterior siding, and industrial containers require tough building materials. APA trademarked High and Medium Density Overlay plywood (HDO and MDO) combine the toughness of Exterior-type plywood …

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In order to compensate for the thickness, some factories mass-produce plywood with concave lens shape.

  In order to compensate for the thickness, some factories mass-produce plywood with concave lens shape.为了弥补厚度,一些工厂批量生产凹透镜形状的胶合板 为了竞争价格的工厂,他们制造的胶合板中间一般都很薄, +/-0.8mm到+/-1.0mm, 甚至+/-1.2mm 厚些都有可能。 In order to compete for prices in factories, the plywood they make is usually thin in the middle, +/-0.8mm to +/-1.0mm, or even a little thicker than +/-1.2mm. 例如:18MMX1220X2440MM是11层,客户要求的是+/-0.5MM厚度公差,但是由于成本的控制,一般的工厂会考虑把边缘做成11层足够,然后把中间做成10层。 For …

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Wood Veneer inspections Grading rules and QC checklists

Wood Veneer inspections Grading rules and QC checklists 1.ENGINEERED VENEER :Engineered Veneer (EV) , know as reconstituted veneer, recomposed veneer, man-made veneer, artificial veneer,  Check if they have consistency of colors and grains sheet to sheet to matching the surface of your qc checklists   . 2.Edgebanding Veneer:also called  finger-joint wood veneer, …

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