Blockboard Sheets and Their Uses

Study Notes

Blockboard Sheets

Composed of layers of veneer on top and bottom with wooden lists in between.
Width of wooden lists spans from 7 mm to 30 mm.
Typically used in furniture manufacturing and interior design.
Internal filler consists of softwood (e.g., poplar or white pine) measuring 15x15 mm or 20x20 mm, or rectangles of 15x20 mm or 20x30 mm, with a maximum length of one meter.
Veneer layers are made from various woods, 2-3 mm thick, placed on fibrous reflective middle blocks.

Uses of Blockboard Panels

Suitable for furniture manufacturing.
Used for wall cladding and making tables and benches.
Ideal for creating long bookshelves and internal door fillers.

Advantages of Blockboard Panels

Easy application of natural wood veneers or Formica, available in ready-to-use pallets.
Capable of forming interlocks and various welds for large surface construction.
Produces large areas without visible joints or defects.

Disadvantages of Blockboard Panels

Filler packs cannot reverse the annual ring direction, leading to potential curvature.
Requires edge treatment with wood frames.
May curve after applying veneer on one side.
Expansion gaps become noticeable when trimming the board.

Sizes and Sales Units of Blockboard Panels

Thickness options: 12, 19, 22, and 25 mm (locally manufactured).
Available sizes:
- 244 x 122 cm
- 220 x 122 cm
- 200 x 125 cm
- 120 x 100 cm

Manufactured Wood Types

Particle Boards

Made from cellulose fibers from varied sources (wood, flax, cotton, sugarcane).
Processed mechanically into particles, dried, mixed with adhesives, and compressed at high temperatures (around 120°C).
Commonly used in furniture industry, density ranges from 550 to 750 kg/m³.

Properties of Particleboard

Manufactured as large panel sizes with a homogeneous structure.
Acts as a sound isolator and is easy to operate with machines or manually.
Compatible with wood veneer, Formica, and plastic.
Economical and cost-effective.

Disadvantages of Particleboard

Prone to crushing at edges; requiring additional framing for protection.
Less durable than natural wood or blockboard.
Ineffective for making holes for screws or hinges.

Uses of Particleboard

Ideal for wall and ceiling cladding in various settings (homes, offices, halls).
Provides sound insulation for theatres, cinemas, and lecture halls.
Used in the manufacture of furniture, including desks and cabinetry.
Suitable for door cladding and filling.

Available Sizes of Particleboard

Size options include:
- 244 x 122 cm
- 366 x 122 cm
Thickness options: 6, 8, 10, 12, 16, 19, 22, 25, 30, and 36 mm.

Description

Explore the composition, advantages, and disadvantages of blockboard sheets. This quiz covers their application in furniture manufacturing and interior design, highlighting both their practical uses and potential drawbacks. Perfect for students in wood technology or design courses.