Laminated blockboard, a durable decorative lumber core

Laminated Blockboard

One of the latest industrial applications on blockboard, consists in overlaying the panel with a durable decorative surface material, called continuous high pressure laminate (cHPL or CPL). This panel has special performance properties including chemical, fire, and wear resistance, which add to the well-known great features of blockboard.
Some of the most common enforcements are structures for upper and lower kitchen cabinets, workbenches, child room and office furniture, and all kinds of articles that require excellent resistance to scratch and hard use.

Trade names
Laminated blockboard, melamine-faced blockboard, formica laminate blockboard, laminated lumber core, melamine-impregnated film-coated block board.

Construction
cHPL with a thickness of 0,5 mm is laminated on blockboard with PVAc (D3) glue and is available with two kinds of raw panels as core material: the 3-ply or 5-ply construction (without any HDF), or with the 3-ply or 5-ply construction with a thin HDF under the laminate as per following pictures.
The thin HDF panel under the cHPL overlay totally eliminates any kind of telegraphing defects that might sometime appear on the veneer core, so it’s highly recommended.

Blockboard + HDF (3-ply) + cHPL laminate
Blockboard + HDF (3-ply) + cHPL laminate
Blockboard + poplar veneer + HDF (5-ply) + cHPL laminate
Blockboard + poplar veneer + HDF (5-ply) + cHPL laminate

cHPL laminates are available in a selected range of colors and wood grains and finishings, well integrated with the current trends and needs of the market.
Custom laminates are available upon request.

Design range

Finishing top coat range

  • Matt
  • Vertical Syncro
  • Horizontal Syncro
  • Silk
  • Quartz
  • Wood Pore
  • Metal

Standard sizes
3660×1840 mm (*)
3120×1840 mm
3660×2060 mm
(*) = most common size

Thickness
15, 18, 20, 25, 30 mm

Special sizes and thicknesses upon request.

Bonding of the faces is made with urea-formaldehyde glue (UF) (formerly called IF20), while the lumber core is bonded with PVAc (D3), in compliance with the provisions of the EN 314 standard.
After suitable treatment in view of resistance to humidity, the board complies to Class 1 requirements for the use of boards in dry environments (EN 636-1).
Class 2 (formerly called AW100 or MR) can also be produced upon request.
Formaldehyde emissions are below those established for Class E1 in conformity with the EN 636 standard. The low-emission class E1 panels do not cause a concentration of equilibrium in the air of the test chamber (defined in the EN 717-1 standard) greater than 0.1 ppm, the limit established by the World Health Organization for living and residential environments.

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5-layer blockboard, the light and stable lumber core

5-ply blockboard

5 ply Poplar Lumber CoreBlockboard (aka lumber core) is well known worldwide due to its characteristics of bending strength, lightness and screw-hold ability. As it’s a real solid-wood alternative to timber, suitable for the production of high-quality and long-lasting furniture and furnishings. It is commonly used for shutters (also with large dimensions), structural components (shoulders), long book shelves, partition walls and cabinet-making.
While most blockboard manufacturers worldwide are producing a 3-ply construction, in Italy it has been developed in the 5-ply construction, with two veneers on each side, in order to achieve the best surface stability and flatness.

Trade names
Blockboard, lumber core, lumber core plywood, commercial block board, Manufactured Board, single core board, Block Composite Board, battenboard, Tischlerplatte, Stabsperrholz, PDP, Mebloplato, Meubelplaat, Meubelpanelen, panneaux latté, alistonado, listellare, panforte, paniforte a listelli.

5-ply blockboardFeatures and advantages
– Excellent dimensional stability and moisture resistance.
– High bending strength.
– Light weight.
– High screw-holding resistance.
– Easy to work and cut, allowing long-term life to tools during processing.
– Suitable to be covered with plastic laminate or veneer.
– A real green alternative to solid wood, with good resistance to warping.
– To achieve maximum strength, it’s important to ensure that the core runs lengthways.

Composition
A. The center of the panel (blockboard core) is a solid slab generally made with side-glued lumber strips in the width of 28-38 mm; the most common are kiln-dried soft wood timber species used in the cores are poplar, spruce and pine.
B. The blockboard core (long-grain) is then glued under high pressure with two layers of crossband veneer sheets on each side, with parallel grain. The two layers of veneer are normally in poplar, with a minimum total thickness of about 2.5-3.5 mm per side.

Blockboard technical draw

Standard sizes
1300×3050 mm
1880×3140 mm
1880×3680 mm (*)
2070×2800 mm
2070×4200 mm
(*) = most common size

Thickness
14 to 30 mm
(other thicknesses are available with 3-ply or double-core construction)

Special sizes and thicknesses upon request.

Technical specifications
Thickness tolerance+/- 0,3 mm
Length tolerance+/- 5 mm
Width tolerance+/- 5 mm
Tolerance in squaring2 mm/m
Moisture content (at delivery)8-12%
Reaction to fire (EN 13501-1)D-s2,d0 – Dfl-s1
Density (EN 323) for poplar coreabout 420 kg/m3
Density (EN 323) for spruce coreabout 450 kg/m3

Bonding of the faces is made with urea-formaldehyde glue (UF) (formerly called IF20), while the lumber core is bonded with PVAc (D3), in compliance with the provisions of the EN 314 standard.
After suitable treatment in view of resistance to humidity, the board complies to Class 1 requirements for the use of boards in dry environments (EN 636-1).
Class 2 (formerly called AW100 or MR) can also be produced upon request.
Formaldehyde emissions are below those established for Class E1 in conformity with the EN 636 standard. The low-emission class E1 panels do not cause a concentration of equilibrium in the air of the test chamber (defined in the EN 717-1 standard) greater than 0.1 ppm, the limit established by the World Health Organization for living and residential environments.

If you are looking for a reliable supplier of this product or you need more technical information, please contact me using the form on this page.

If you want to improve the information I provided on this page, or you simply want to add your comments or experience about this product, feel free to post a comment below.

Multiflex, the flexible and bendable plywood

Multiflex bending plywood

Multiflex is a special kind of plywood which, thanks to its particular composition, has a high flexibility and bend-ability that can be applied on a curved radius.
Multiflex is a very practical solution to produce curved structures, especially when small radii are required.
Multiflex is a unique product for the ease with which it can take any curvature and rounded shapes, including “S” or circular.
Multiflex is suitable in the creation or the coating of curved columns, arches cabinet applications, curved furniture parts and fixtures in restaurants, reception and office work stations, stage sets, spiral stairways, boats, caravans, and interior architecture in general.

Trade names
Flexply, flexoply, flexible plywood, bendy plywood, bending plywood, bendable plywood, curve-ply, wacky wood, wiggle wood, contreplaqué souple, panneau contreplaqué cintrable, biegensperrholz, contrachapado curvable, compensato flessibile, pannello compensato curvabile, esotico flessibile, esoflex, compensato pieghevole, radius plywood.

Features and advantages
– Cold forming with small radii (with no need for heat forming or water treatment).
– Self-supporting structure eliminates the need for structural skeletons or special supports.
– Complex multi-radii shapes can be quickly and easily prepared.
– The panels can simply be combined and glued together to create different thicknesses (10, 13, 15, 18, 20, 21 mm, etc.).
– More convenient than other pre-made wood forms.
– Reduction of material and labour costs to a minimum.
– No need for special equipment or prior experience.

Composition
The panel consists of two veneer sheets of Ceiba pentandra (exotic veneer from timber plantation wood, also called fromager or fuma) with parallel grain and inner core of thin wood or other flexible material.
From 3 mm to 9 mm thickness the composition is 3-layers, over the composition is 5-layers.

Standard Sizes

Long grain
2500×1220 mm
3100×1830 mm
(bending in the longest dimension)

Cross grain
1220×2500 mm
1830×3100 mm
(bending in the shortest dimension)

Thickness
4, 5, 8, 10, 12, 16 mm

Special sizes and thicknesses upon request.


long grain
Multiflex long grain
cross grain
Multiflex cross grain
Technical specifications
Bending radius for a 5 mm boardabout 50 mm
Bending radius for a 8 mm boardabout 100 mm
Bending radius for a 16 mm boardabout 300 mm
Longitudinal elasticity for a 5 mm board210 N/mm2
Cross elasticity for a 5 mm board6300 N/mm2
Thickness tolerance+/- 0,35 mm
Length tolerance+/- 5 mm
Width tolerance+/- 5 mm
Tolerance in squaring2 mm/m
Moisture content (at delivery)8-12%
Reaction to fire (EN 13501-1)D-s2,d0 – Dfl-s1
Thermal conductivity (EN 12664)0,12 W * (m k)-1
Density (EN 323)about 400 kg/m3

Bonding (formerly called IF20) is made with urea-formaldehyde glue (UF) and is in compliance with the provisions of the EN 314-2 standard.
After suitable treatment in view of resistance to humidity, the board complies to Class 1 requirements for the use of boards in dry environments (EN 636-1).
Class 2 (formerly called AW100 or MR), for uses subject to exposure to moisture variation, can also be produced upon request with melamine gluing.
Formaldehyde emissions are below those established for Class E1 in conformity with the EN 636 standard. The low-emission class E1 panels do not cause a concentration of equilibrium in the air of the test chamber (defined in the EN 717-1 standard) greater than 0.1 ppm, the limit established by the World Health Organization for living and residential environments.

Usage and storage instructions
– Store the panels lying flat in a clean, shaded, dry place.
– Panels should be transported on a hard flat surface. Single panels can be rolled, but should not remain in this position for long periods.
– Do not expose the panel to sudden changes in humidity, temperature, and also protect it from sunlight.
– Glue the panels while they are brought into the desired shape. When the glue is dry, panel will retain its shape.
– High Pressure Laminate or paper-backed veneer can be applied during the initial curving process, or in a second step.
– Any wood glue can be used.

Multiflex is developed and optimized to work in perfect combination with GLOBAL membrane presses

GMP-P | GLOBAL MEMBRANE PRESS PROFESSIONAL from GLOBAL VACUUM PRESSES on Vimeo.

If you are looking for a reliable supplier of this product or you need more technical information, please contact me using the form on this page.

If you want to improve the information I provided on this page, or you simply want to add your comments or experience about this product, feel free to post a comment below.