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Birch Laser Cutting
Interior Birch Plywood

An ultimate in performance and durability

Birch is a specially developed Birch Plywood with colourless synthetic resin adhesive for laser cutting, foundry pattern applications and is commonly used as die cutting plates.. It is equally suitable for several indoor uses and for interior applications in dry areas. The excellent strength properties of the panel enable die tools to be fabricated with accuracy in dimensions. The absence of any voids or gaps or open dead knots in intermediary layers and fortified bonding controls moisture movement as well as combustion gases emissions during laser cutting operations.

Birch Key Benefits

Highly wear resistant

Resistant to most aggressive environments, including chemicals

Durable

Hard surface

Easy to work with using conventional woodworking tools and fasteners

Environmentally friendly

Resistance to temperature variation: through a range of -40°C to +50°C (-40°F to +122°F) and is available in a variety of thicknesses and sizes

What does our promise of Efficiency mean to you

Products that improve your cost, material and energy efficiency

Reliable and timely deliveries

Local knowledge, support and service

Solutions for every application

Proven and documented technical data and environmental statements

Birch Properties

Moisture resistant, dimensionally accurate & stable.

Strong and light

Meets EUTR standards,

Meets European E1 formaldehyde emission requirements (EN 120:1992) and also California ARB regulation P2

Brich Veneers

100% natural whole piece or spliced Birch Veneers of 1.4mm thickness throughout the plywood without any gaps or open splits or joints.

Face veneer: Qualities B and/or BB as may be required.

Birch Bonding

Cross-bonded interior gluing according to EN 314-2 (Plywood - Bonding) class 1 interior.

Effect of humidity and moisture

Wood veneer is a living material and is subject to moisture movement according to surrounding conditions, which affects the flatness of panels. It is important to condition the panels to reach a moisture content near to the equilibrium of their permanent environment.

Like other wood-based panel products, Birch Plywood is also hygroscopic and its dimensions change in response to a change in humidity. A change of 1% in moisture content typically increases or decreases the length, width and thickness by 1% in dimensions and thickness. It is therefore desired that the edges are sealed with a suitable acrylic paint to prevent and/or control ingress of moisture and humidity and consequent swell in thickness and expansion in dimensions.

The recommended stocking conditions are 20°C and a RH of air of about 60%.

It must not be exposed to wet or high humidity conditions!

Availability options:

Birch Plywood is made in a range of thickness from 4mm to 40mm.
However, the commonly available Ex-Stock thickness is
3mm x 3 ply
4mm x 3 ply
6mm x 5 ply
8mm x 5 ply
9mm x 7 ply
12mm x 9 ply
18mm x 13 ply
21mm x 15 ply
24mm x 17 ply
30mm x 21 ply
33mm x 23 ply
35mm x 25 ply
40mm x 29 ply.

The most commonly available dimension is 1525mm x 1525mm
Commonly available surface Grades are B/BB, BB/BB.
Other grades can also be had under prior arrangement.
Size tolerances for standard and cut-to-sizes panels ±1 mm.

Thicknesses and weights

Thicknesses and tolerances fulfils the requirements of EN 315 (Plywood - Tolerances for dimensions) and are in part stricter. Other thicknesses on request.

Nominal thickness (mm)
Number of plies
Min. thickness (mm)
Max. thickness (mm)
Weight
(kg/m 2) approx
3
3
3
3.4
2.1
4
3
3.8
4.2
2.8
6
5
6.1
6.9
4.4
8
6/7
7.8
8.5
5.5
9
7
8.8
9.5
6.1
12
9
11.5
12.5
8.2
16
11/12
15.8
16.5
10.9
18
13
17.1
18.1
12.2
21
15
20.0
20.9
14.3
24
17
22.9
23.7
16.3
30
21
29.1
30.5
20.3
33
23
32.0
33.4
22.3
40
29
39.2
40.5
27.1

Sizes and thicknesses relating to moisture content 8–12 %.

Technical Specification

Moisture resistance Normal, interior as per EN -314 (2) Class-1 Interior
Density, kg/m3 640-700
Moisture content, % 5-14
Plywood is produced under STO 00255177-001-2013 "General purpose plywood with birch face veneers."*

Strength Specifications

Subject
Thickness, mm
Index
Static bending strength,
N/mm2, not less
along the outer layer
grain
9-40
45
across the outer layer grain
30
Strength in tension along the grain, N/mm2, not less  
3-8
30
Modulus of elasticity in static bending, N/mm2, not less along the grain
9-40
5000
across the grain
3000


Birchply Strength Specifications

Dimension
Value
Ultimate static bending strength, min MPa along the grain
of face veneers
60
against the grain
of face veneers
30
Static bending elasticity modulus, min MPa along the grain
6000
across the grain
3000


Parameters

Values

Density kg/cubic meter

640-700

Moisture Content %

8-10

Minimum Ultimate strength MPa

 

    Shear along the glue layer

1.5

    Static bending along the grain (Outer layer)

25

    Tension along the grain

30

    Minimum elastic module, MPa

7000

Reuses

Typical number of reuses is likely to be in the range of 15-20 times. However, this will vary according to many different factors including good site practice, the required concrete finish, the amount of care taken when compacting the concrete, handling and storage of panels, type and quality of release agent used on the panels before concreting.

The number of times the plywood can be reused is only intended as an approximate guide. It does not imply any form of warranty. The actual number of reuses will depend on several factors other than the plywood.

Disclaimer:

Eximcorp India Pvt Ltd, does not assume any responsibility or admits any liability whatsoever for the number of uses or re-uses or repetitions or damages to the sheets or concrete surface quality for reasons not attributable to manufacturing defects or for several other factors affecting the performance of the product. In the event of any occasional delamination in excess of the AQL (Acceptance Quality Level) of 3% established by the trade practices and also so declared by the seller hereby, the replacement of delaminated sheets or the surface area so observed shall me made expeditiously by the Seller or refund of value thereof as soon as possible without any further or other consequential or other losses.

Eximcorp India Pvt. Ltd., 88/14-17 Mundka. Industrial Area, Road No. 12, Delhi Rohtak Road, New Delhi 110 041
Mobile : +91 98910 38202
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