Electrocardboard, Dnipropetrovsk region.

Cardboard paper for patterns, patterns 0.3 mm x 1050 mm
Cardboard for patterns or electrocardboard pressboard is used for making patterns in sewing and shoe production, for products made of tapestry, leather, leatherette, etc. Electrocardboard is also used to insert into the visors of hats, shoe backs, haberdashery.
Width, cm: 105 cm.
Thickness: 0.3 mm.
Cardboard for patterns or, in other words, electrocardboard was widely used in the sewing and leather goods industry for the production of patterns (patterns) and stencils. Due to its high wear resistance, density and smoothness, electric cardboard for patterns of the EV brand (GOST 2824-86) with a thickness of 0.1 to 0.5 mm is used for these purposes. Molds made of EV electrocardboard retain their appearance for a long time even with frequent use.
Depending on the purpose and use of patterns, electrical insulating cardboard of different thickness is used:(//tractor-service.com)
- electrocardboard 0.1 is the thinnest cardboard, similar to kraft paper, but smoother and denser, used for single-use patterns (fashion collections or one-off items);
- 0.2-th electric cardboard - denser cardboard, used for infrequently used patterns, thanks to its thinness and strength, it allows you to cut many patterns by hand without much physical effort;
- electrocardboard t. 0.3 - the most popular cardboard for patterns in the sewing industry - thin and very dense, convenient for cutting, suitable for patterns that are often used for trimming;
- electrocardboard 0.4 - denser and stiffer than cardboard 0.3, used for making large, frequently used patterns for knives and edging, as well as for inserts in visors of hats and shoe backs;
- 0.5-th electric cardboard - the thickest and densest cardboard for patterns with intensive and long-term use, optimal for cutting under a knife without sanding.

"