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Promat Inc. Comfort Mat

DLG-APPROVED: "Deformability/Elasticity, Permanent Tread Load"

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A quality mark “DLG-APPROVED for single value-determining criteria” is awarded to agricultural products which successfully passed a smaller-scope DLG usability test according to independent and recognized evaluation criteria. The test intends to highlight special innovations and key criteria of the test item. The test can focus on criteria from the DLG testing framework for full tests or on other individual features or qualitative criteria. The minimum requirements, the test conditions and procedures as well as the evaluation guidelines of the test results are determined in consultation with a DLG expert group. They comply with the generally recognized technology rules as well as with scientific and agricultural knowledge and requirements. The successful test concludes with the publishing of a test report and the awarding of a quality mark which is valid for five years following the award date.

The DLG Appoved Test “Deformability/Elasticity, Permanent Tread Load” includes technical measurements on test stands of the DLG Test Center. The deformability and elasticity were measured and a permanent tread load was applied. The test was based on the DLG Testing Framework for elastic stable flooring, as of April 2010.  Other criteria were not investigated.

The Product

Comfort Mat

Description and technical data

Black, profiled cubicle rubber mat

  • approx. 24 mm thick
  • surface with a hammerstroke structure
  • underside with knops approx. 5 mm high
    and base approx. 15 mm high
  • Strip wise installation
  • Shore A: approx. 70

Assessment – Brief Summary

The Promat cow mattress Comfort Mat tested here, an elastic floor covering for the resting area in cubicle houses, was investigated with regard to durability and comfort properties on test stands in the DLG Focus Test. The deformability and elasticity of the cubicle mat were measured and a permanent tread load was applied. The deformability and elasticity in new condition and following permanent tread load were significantly better than standard.

Table 1: Overview of results

Test characteristic Test result Evaluation *
Deformability and elasticity  
in new condition 35.3 mm + +
following endurance test 41.3 mm + +
Permanent tread load  
no lasting deformation + +
wear on the top cover

*    Evaluation range: ++ / + / ◯ / – / –– (◯ = standard)

The Method

Deformability and elasticity

The deformability is measured in new condition and following permanent tread load using ball penetration tests with a calotte (r = 120 mm) and a penetration force of 2,000 N (corresponding to approx. 200 kg).

Permanent tread load

The permanent tread load is ­measured on a test stand with a round steel foot in the standard test programme with 100,000 alternating loads at 10,000 N (corresponding to approx. 1,000 kg). The steel foot is adapted to the natural conditions as an “artificial cow foot”. The foot has a diameter of 105 mm and therefore a contact area of 75 cm²; the carrying edge of the hoof is simulated by a 5 mm wide ring on the periphery of the sole that projects 1 mm above the rest of the surface.

The Test Results in Detail

Deformability and elasticity

In the ball penetration tests in new condition with a calotte (r = 120 mm), penetration depth was 35.3 mm. The resulting calculated bearing pressure of 7.5 N/cm² indicates a small load on the carpal joints when lying down and getting up.

Elasticity was measured following a permanent tread load exerted by a steel foot (contact area: 75 cm²) with 100,000 alternating loads at 10,000 N. Following the endurance test, the penetration depth of the calotte increased from 35.3 mm to 41.3 mm. The bearing pressure decreased from 7.5 N/cm² to 6.4 N/cm² (see Fig. 2). This means that deformability and elasticity increase.

Permanent tread load

Wear on the surface of the top cover of the mat was observed following exposure to permanent tread load on a test stand with 100,000 alternating loads at 10,000 N. No lasting deformation was observed.


Based on test-stand investigations, the criteria tested in this DLG Approved Test evaluate the comfort and durability properties of the Promat cow mattress Comfort Mat for use in the resting area of high cubicles in cubicle houses. The tested Promat cow mattress Comfort Mat met the requirements of the Testing Framework with respect to the investigated criteria.

Applicant and manufacturer

Promat Inc.,
594711 County Rd.
59 South, Woodstock Ontario

Tel.: +519 456 2284
Fax: +519 456 1458

Test execution

DLG e.V.,
Test Center for
Technology and Farm Inputs,
Max-Eyth-Weg 1,
64823 Groß-Umstadt,

DLG Testing Framework
DLG Approved Test “Elastic Stable Flooring”(as at 04/2010)

Indoor operations

Project manager
Dipl.-Ing. Susanne Gäckler

Test engineer(s)
Dr. Harald Reubold  *

* Reporting engineer


DLG TestService GmbH - Groß-Umstadt location • Max-Eyth-Weg 1 64823 Groß-Umstadt Germany • Tel.: +49(0)69 24 788-611 •