Plywood Types and Application

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plywood

What is Plywood?

Plywood is a sheet made from thin wooden layers. These thin wooden layers are then glued and machine pressed together to form a sheet. After gluing, these sheets are baked at 140 °C to form a Plywood. It is an engineered wood. These wooden layers are processed from Oak, Mahogany, Teak, Maple Bark.

Sizes of Plywood

  1. 8’0″ x 4’0″
  2. 8’0″ x 3’0″
  3. 7’0″ x 4’0″
  4. 7’0″ x 3’0″

Types of Plywood

There are 5 types of Plywood.

  • Softwood plywood
  • Hardwood plywood
  • Tropical plywood
  • Flexible plywood
  • Marine plywood

In INDIA, softwood, flexible & marine Plywood are used on large-scale. Plywood comes not only in different thicknesses, but also in different grades.

Grades of Plywood

Grade Description
A Face and back veneers practically free from all defects.
A/B Face veneers practically free from all defects. Reverse veneers with only a few small knots or discolorations.
A/BB Face as A but reverse side permitting jointed veneers, large knots, plugs, etc.
B Both side veneers with only a few small knots or discolorations.
B/BB Face veneers with only a few small knots or discolorations. Reverse side permitting jointed veneers, large knots, plugs, etc.
BB Both sides permitting jointed veneers, large knots, plugs, etc.
C/D For structural plywood, this grade means that the face has knots and defects filled in and the reverse may have some that are not filled. Neither face is an appearance grade, nor are they sanded smooth. This grade is often used for sheathing the surfaces of a building prior to being covered with another product like flooring, siding, concrete, or roofing materials.
WG Guaranteed well glued only. All broken knots plugged.
X Knots, knotholes, cracks, and all other defects permitted.
WBP Weather and Boil Proof used in Marine Ply. Designation replaced by EN 314-3.

 

Applications of plywood

Plywood is used in many applications depending upon nature of work.

  • Softwood Plywood
  1. Floors, walls and roofs in home constructions
  2. Wind bracing panels
  3. Vehicle internal body work
  4. Packages and boxes
  5. Fencing
  6. Concrete shuttering panels
  7. Ready-to-paint surfaces for constructions
  • Hardwood Plywood
  1. Panels in concrete form work systems
  2. Floors, walls and roofs in transport vehicles
  3. Container floors
  4. Floors subjected to heavy wear in various buildings and factories
  5. Scaffolding materials
  6. Furniture
  7. Sports equipments
  8. Musical instruments
  • Tropical Plywood
  1. Common plywood
  2. Concrete panel
  3. Floor base
  4. Structure panel
  5. Container flooring
  6. Lamin board
  • Flexible Plywood

Flexible plywood are used in a furniture where a single sheet is used in continuity.

  • Marine Plywood

Marine plywood are used in Kitchens and wet area. These are also used in Boats.