We do extensive testing as you can see below.

PROJECT:       090603

Date:                06/03/2009

OBJECTIVE: To determine the comparability between Competitor-ST and XGS’s adhesives used to splice slabs of “Synthetic

Grass”.

SCOPE:          This test Method is primarily intended for determining the relative peel resistance of adhesive bonds between flexible

adherents by means of a T-type specimen.

REFERENCE: ASTM D 1876-08. Standard Test Method for Peel Resistance of Adhesive (T-Peel Test). Some adjustments were made to

this test to reflect working and environmental conditions during material installation on sites.

PROCEDURE:  

1. Cut 14 pcs (8” x 8”) from “56 oz polyurethane back” Synthetic Grass (S.G.) material. Enough for two runs.
2. Cut 14 pcs (10” x 10”) from “white tape” material. Enough for two runs.
3. Place the “white tape” glue side up on a flat surface and pour 1/16” thick layer of the adhesive (glue) to be tested on a 6”x 6” area.
4. Let the adhesive stand between 1 and 20 minutes, until “bubbling” starts to show on the surface.
5. Place the 8” x 8” Synthetic Grass sample into the adhesive, leaving 2” to 3” without glue for the pull test. Use a 12” x 12” (12 lbs.) flat weight to ensure uniform pressure on all samples. NOTE: Place the stitches parallel to the edge of the adhesive (standard seam).
6. After 48 hrs, die cut 1.5” x 6” strips from the samples. Leave about 2-3” of material without adhesive for the pull test. 
7. Identify each sample as needed.
8. Using tensile testing equipment, pull the tape and synthetic grass sample apart at 48 hrs. Record the peak tensile in lbs.
9. Create a spreadsheet to compare the results.

EVALUATION:

• Application:

Competitor-ST: Very difficult to apply. Viscosity too high, too “sticky”. The adhesive doesn’t flow well into the cavities created between ridges on the backing material. Better tensile results were obtained when the synthetic grass was pressed on right after the adhesive application. Tools very difficult to clean. We were concerned about the solvent (acetone) vapors released during application. See manufacturer MSDS for material handling.

 XGS’s DC Green: Easy to apply, flows very well. Significantly lower viscosity than Competitor-ST. Tools were cleaned using paint thinner. Synthetic grass was pressed on after foaming started to show on the surface (about 20 minutes)

T-Peel Test.

See below spread sheet for results

According with this test the most consistent results were obtained with XGS DC Green. We preferred the XGS DC Green because of the easy application. The adhesives firmly adhered to the backing material in such a strong bonding that many “blades” were pulled through the scrim mesh separating the backing from it. See pictures.

NOTE: Relative humidity, ground humidity, material backing humidity, type of material backing and workmanship are very important factors on the adhesive bonding. 

T-Peel Test Results              PROJECT:   090603                Date 06/03/2009

Test#                        Synthetic Grass        Substrate   Adhesive Type   Adhesive     Time            Pull test

                                                                                                             Thickness    Interval        @48 hrs.

                                                                                                                                After Appl.   Peak lbs.

T-09060301-A         56oz Polyurethane       White     Competitor-ST     1/16’          20 Min.           13.0

                                            Back                  Fiber

                   -B                                                                                        1/16’           20 Min.           5.0

Average                                                                                                      9.0    

Test#                        Synthetic Grass        Substrate   Adhesive Type   Adhesive     Time            Pull test

                                                                                                               Thickness   Interval        @48 hrs. 

                                                                                                                                 After Appl.   Peak lbs.

T-09060305-A         56oz Polyurethane       White     XGS Seam           1/16’          20 Min.            14.0

                                             Back                  Fiber        Binder

                   -B                                                                                         1/16’          20 Min.            20.2

Average                                                                                                       17.3