DLG e.V. - Test: Cubicle Cow Comfort Mat

Cubicle Cow Comfort Mat Deformability/Elasticity, Permanent Tread Load, Abrasion, Slip resistance, Acid resistance

Assessment – Brief Summary

The Highrange Cubicle Cow 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, the abrasion resistance, the slip resistance, the acid resistance were measured and a permanent tread load was applied.

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Table 1: Overview of results

Test characteristic Test result Bewertung
Deformability and elasticity*
– In new condition 13,3 mm +
– Following endurance test 12,8 mm +
Permanent tread load*
no lasting deformation ++
wear on the surface of the mat
Abrasion test*
good wear resistance +
Slip resistance**
good slip resistance on dry and wet mat surface +
Acid resistance***
Feed acid mixture resistant +
Uric acid resistant +
Sulfurous acid resistant +
Ammonia solution resistant +
Disinfection liquid limited resistant
Peracetic acid resistant +

*    Evaluation range: ++ / + /◯ / – / –– (◯ = standard, N/E = not evaluated)
**    Evaluation range: + / –
***    Evaluation range: + = resistant/ ◯ = limited resisitant  / – = not resisitant

The Product

Cubicle Cow Comfort Mat

Description and Technical Data

Black, profiled cubicle rubber mat

  • ca. 34 mm thick.
  • Surface with a honeycomp structure.
  • Underside with knops ca. 21 mm high and base ca. 15 mm high.
  • Strip wise installation.
  • Shore A: ca. 75

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.

Abrasion test

In a standardised abrasion test with 10.000 cycles the top cover was grinded with an emery cloth (granulation 280) and a grinding pressure of 500 N (= 8.1 N/cm2 surface pressure).
The friction element was cooled continuous with water to prevent an influence of the generated heat during the abrasion test. The size of the grinded  area was 61,5 cm².

Slip resistance

The measurements were carried out with the ComfortControl test rig of the DLG test centre.
A loaded (10 kg) round plastic foot (105 mm diameter, with a contact area of 75 cm2, 3 mm wide ring at the periphery of the ground) was pulled with a velocity of 20 mm/s across the mat.

Acid resistance

A permanent dipping test in accordance to DIN EN ISO 175:2000 (performance of synthetic material against liquid chemicals) was carried out. Test samples (size 30 x 30 mm) were completely dipped into different test liquids for 24 hours and 28 days (room temperature 20° Celsius). In the 28 days test the liquids were changed weekly. After the 28 days the samples were washed with distillate water and dried for 24 hours. Before and after the dipping the weight, the dimensions and the shore hardness (shore A) of the test samples were measured. Additional visual evaluation was done for alterations like colour changing, swelling, destruction or crystallisation. All samples were evaluated in comparison to the standard water.

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 13.3 mm. The resulting cal­culated bearing pressure of 19.9 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 decreased from 13.3 mm to 12.8 mm. The bearing pressure increased from 19.9 N/cm² to 20.7 N/cm² (see Fig. 2). This means that deformability and elasticity slightly decrease.

Evaluation
Deformability and elasticity
– in new condition+
– ollowing permanent tread load    +

Permanent tread load

Wear on the surface 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.

Evaluation
wear on the surface of the mat ◯
no lasting deformation++

Abrasion test

The abrasion depth after 10,000 cycles amounted to 3.7 mm, this corresponds to approximately 11 % of the rubber thickness. Of the ground surface 7.2 grams were rubbed off.

Evaluation
The abrasion depth and the
slight grit implicate a good wear
resistance of the rubber mat
+

Slip Resistance

The slide pulling tests showed a good slip resistance on the dry or wet rubber mat surface in new condition.  The measured friction coefficients (μ) all surpassed the minimal value of μ = 0.45 which speaks for a good foothold.

Evaluation
Good slip resistance on dry
and wet rubber mat surfacet
+

Acid resistance

The rubber mat was resistant, with exception of the barn dis­infection liquid, against the
used test liquids. The differences in weight, thickness and Shore A hardness between the acid treated and not acid treated samples were minor and lay in the range of water as standard. Against the used liquids the rubber mat seems to be satisfactory suited for the described use.

Figure 3: Deformability as a function of bearing pressure

Figure 4: Measuring the deformability

Bild 5: Test sample after abrasion test

Figure 6: Slip resistance measurement

Figure 7: Samples after acid resistance test

 

Table 2: Test liquids and results acid resistance

Test liquid Concentration Result after 24 hours residence time Result after 28 days residence time Evaluation
Feed acid mixture
concentrate, pH 2 no changing no changing resistant
Excrement acids
Uric acid saturated urea solution (0,4 %) no changing no changing resistant
Sulfurous acid 5-6% SO2 no changing no changing resistant
Ammonia solution 32 % solution no changing no changing resistant
Disinfection liquid
Barn Disinfection liquid 2  %-solution of a product with formic acid and glyoxyl acid test sample sticky test sample sticky limited resistant
Peracetic acid 3000 ppm no changing no changing resistant

Summary

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

DLG Test Center Technology and Farm Inputs

DLG e.V.
Max-Eyth-Weg 1
64823 Groß-Umstadt
Germany
Tel.: +49(0)69 24 788-611
tech(at)DLG.org

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DLG-APPROVED Single value-determining criteria
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, Abrasion, Slip resistance, Acid resistance,” includes technical measurements on test stands of the DLG Test Center. The deformability and elasticity, the abrasion resistance, the slip resistance, the acid resistance 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.

Manufacturer and Applicant

Highrange Rubber and Coir Products LTD, Industrial Nagar,    
Changanacherry 686106,     
Kerala-India

Contact:
Telephone +91 481 2721255,
Fax +91 481 2721155,
info(at)hirange.com 
www.hirange.com

Test execution

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

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

Field
Indoor operations

Project manager
Dipl.-Ing. Susanne Gäckler

Test engineer(s)
Dr. Harald Reubold  *

* Reporting engineer