Premilled decorative boards on the basis of wood boards

Countertops control methods

Products quality control is provided on all production, packaging, storage and shipment stages.

1. Control of the look of all items except for softforming facades is performed visually without applying any magnifiers according to GOST 9590, i. 4.2 taking into consideration the following:

  • measuring overhands and offsets is performed in two points on each edge: on equal distance about 2/3 length from the related edge;
  • control of profiles form is performed via comparing with master samples approved in the established procedure.

2. Control of the softforming facades look performed visually without applying any magnifiers according to GOST ГОСТ 52078, ii. 7.1, 7.3, 7.9 taking into consideration the following:

  • control of the items’ longitudinal edges form is performed via comparing with master samples approved in the established procedure.
  1. Control of dimensions is performed with the application of general measuring tools that provide required accuracy.

At the same time the thickness shall be measured not less than in 25 mm in two points of each longitudinal edge.

When measuring thickness and widths the readings are rounded to 1 mm.

When measuring thickness and widths the readings are rounded to 0,1 mm.

3 Then non-straightness of longitudinal edges is determined according to GOST 27680 with the help of a special device or a 1000 mm long straight edge according to GOST 8026 not less than the second accuracy grade and the set of щупов according to the related technical documentation.

4 The crook of an item is determined according to GOST 24053 or with the help of a 1000 mm long straight edge according to GOST 8026 not less than the second accuracy grade and the set of measuring sticks according to the related technical documentation

5 The specific resistance of the covering materials at normal fracture is performed according to GOST 23234 or to the method described in the СТО 5367-001-50012764 –2007.

6 Defining the adhesive strength of the edge facing material to the softforming facades base shall be performed by the method of cuts which means the following.

Two cross cuts about 30° of the edge facing materials shall be made up to the particle board layer in two points along the length of the item selected for the test. The size of the cuts sides forming an angle shall be at least 500 mm. The acute angle part of the covering materials in the point where the cuts cross shall be lifted with the knife and manually detached off the base in vertical direction. The adhesive strength shall be evaluated by the covering material detached: if around 90% of the detached part has a particle board layer on it, the result is considered to be satisfactory.

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