Black Chalkboard Steel

Product Overview

This writing surface material is used for making magnetic blackboards. The steel base keeps the finished board magnetic and the coating carries the writing performance.

Painted writing steel is the surface layer of a magnetic writing board. The steel carries the magnet, the coating carries the writing performance. Senko supplies this material as a coil so board factories can cut, form and laminate it on their own line without changing the way they build boards.

Key Benefits

• Excellent writing performance, writes with chalk smoothly
• Perfect erasing performance, erases with chalkboard erasers easily
• No ghosting after erasing

Application Scenarios

• Classroom and lecture room boards
• Office and training room writing walls
• Mobile and flip boards
• Notice and display boards where magnets are used

Who It Is For

• Whiteboard and chalkboard factories serving schools and universities
• Office furniture and partition manufacturers with a writing wall product
• Board importers and distributors who supply their own converters
• Notice board and planner board producers who need a gridded face

Problems It Solves

• Ghosting left on the surface after erasing
• Markers or chalk that do not release cleanly from the coating
• Colour and gloss that drift between deliveries and show on a finished board wall
• Board widths that force an extra slitting step because the coil width does not match

Technical Features

• Written on with chalk
• Erases without ghosting
• Steel base so the finished board holds magnets
• Colour supplied as black for chalk
• Supplied as coil on a 508mm inner diameter
• Coil weight 2 tons to 4 tons

Specifications

Materials

Coil coated paint system on a steel base. The steel base is what makes the finished board magnetic, so the board frame and core can stay simple.

Manufacturing Process

The coil is finished on a coating line before it reaches your factory. The sequence below shows where colour, pattern and protection are applied.

Quality Control

Senko Steel states that an international standard QC management system is applied to this production, so that output is in line with high end domestic and international manufacturing standards.

Customization Options

• Plain face or a printed 5 x 5cm grid
• White in high glossy or matt, green or black
• Coil width set between 600mm and 1500mm to match your board plan
• Thickness selected within the published range for your board construction

Comparison With Other Products

Use Guide

Work back from the board size

Choose the coil width so the number of board faces per width leaves the least trim.

Test with the real writing tool

Write with the marker or chalk your customer uses, leave it overnight and erase, so ghosting is judged the way a school will judge it.

Check the decoiler

All writing steel ships on a 508mm inner diameter in 2 to 4 ton coils. Confirm both against your line before ordering.

Handle the face

Keep the face clean and dry during lamination so nothing is trapped under the writing surface.