“Chimplast-Acryl-003” acrylic dispersion

   “Chimplast-Acryl-003” is an aqueous dispersion of butyl acrylate polymer. It is used to produce a tack layer on polyethylenetherephthalate, on PP and PE films and other substrates (in production of scotch tape, self adhesive labels, etc.)

Specifications:

Table 1

Table 2 contains data on application properties of scotch tape produced using "Chimplast-Acryl-003" dispersion.

Table 2

   Application method – with a blade or roller at tacky layer thickness after drying  - 16-18 mm. Drying temperature – 100-105°С during 10 seconds.
 

Test methods:

      1. Adhesive capacity:

  From a tape roll of min 25 mm wide cut off 2 strips at least 25 cm long and attach both strips together leaving on one end loose ends 7-10 cm long.

  Fix one end of the tape to the holder in such a way that the other 7-10 cm long end would hang loose.  Attach load to the loose end of the tape making sure that the end has good and even tension. Mark a 10 cm length on the attached part with a marker and bring the nonattached part of the tape to the top mark.

  After that check with a stopwatch time needed for the loose end to reach the bottom mark and turn off the stopwatch.

  Test data reduction:

X = t / S

  Where t is time during which the sample covered this distance in seconds, S – distance equal to 100 mm.

     2. Tackiness:

  Tests are carried at (22+4)°С using samples 250 mm long of the width equal to the width of the tape.

  The sample tape is put on a level smooth surface with tacky side up.  A gradient plane with a 45ºangle and 150 mm height is installed on top on the same surface in such a way that the extending end of the sample tape would run from the bottom edge of the inclined surface in the same direction as the direction of the gradient plane.  A steel ball (d=10 mm) is fixed with a locking device on top of the gradient plane. Then the locking device is removed and the steel ball rolls down the gradient plane reaching the end of the plane and beginning of the adhesive tape strip and rolls on until it stops. Tackiness index is the distance in mm from the end of the gradient plane to the point where the ball stopped.

    3. Adhesion to steel:

  From a tape roll of at least 25 mm wide cut off strips 10-15 cm long and 25 mm wide.

  Attach edge of the tape to a stainless steel panel edge (cleaned with a cotton pad wetted with acetone) and, trying to stretch the tape as little as possible,  stick it  by slowly running a rubber roller on it once back and forth. The sample should be attached in such a way that the contact surface is 25x25 mm in size and is located at the panel edge. The panel with the attached sample is fixed to the holder so that the 75-125 mm long end of the sample which is not attached would hang loose from the panel.  Fix a load of 1 kg to the loose end making sure that the sample has a good and even tension. 

  After that observe the time required for the sample to detach from the panel.

    4. Bonding with steel:

  From a tape roll of at least 25 mm wide cut off strips 60-70 cm long and 25 mm wide.

  Attach edge of the tape to a stainless steel panel edge (cleaned with a cotton pad wetted with acetone) and, trying to stretch the tape as little as possible, evenly stick part of the strip 300 mm long onto the panel by slowly running a rubber roller on it once back and forth leaving a 300-400 mm long end of the sample  not attached. Mark a 100 mm length on the rolled part of the sample and in 5 minutes after rolling start the test.

  The panel with the attached sample is fixed to the holder so that the 300-400 mm long end of the sample which is not attached would hang loose bending 180ºand touching the panel with the nonadhesive side. Fix a load of 850 g to the loose end making sure that the sample has a good and even tension.

  After that observe the time required for the marked length to fully detach from the panel.