Product Width and Spacing
Several combinations of tape widths and spacing can be applied using the MMHTA-18. Combinations of solid and skip lines may be applied simu- taneously. The 3M™ Manual Highway Tape Applicator can be used to apply all Stamark and Scotch-Lane pavement marking tapes at maximum standard roll lengths. NOTE: If special ordering tape, the maximum roll diameter cannot exceed 20 inches (50.8cm) if the material is to be applied with a MMHTA-18. Consult your 3M representi- tive to determine the availbility of the MMHTA-18 in your area.
Operation
The tape applicator can be operated by one person. The following application rates are based on asphalt paver speeds of 25 - 50 ft./min. and a
walking speed of 100 ft./min. | |
10:30 Skip | 750 ft./hr. |
15:25 Skip | 1125 ft./hr. |
Solid Line | 1500 ft./hr. |
Solid / Skip (NPZ) | 2500 ft./hr. |
Double Solid | 3000 ft./hr. |
Overall Average | 1000 ft./hr. |
NOTE: The application rates shown are intended as guidelines and may vary with project condi- tions.
Procedure for Application of Pavement Markings
Load the tape and thread it over the 2-inch (5.08 cm) diameter aluminum roll, adhesive side up (See Figure 2). Feed the tape through the CLAMP to the CUTTER PLATE. Adjust the GUIDE BARS at the sides of the tape rolls to hold them securely in position. The guide bars should be adjusted to allow the roll to rotate freely, but not move side to side. Stamark pavement marking tapes can be ordered with the adhesive side of the tape wound inward or wound outward. Both types of rolls will work with the MMHTA-18; however, the tape wound adhesive side out is recommended. The tape wound adhesive side out will develop a natural curl that positions it to curve toward the silicone applicator roll as it passes through the cutting plate.
CAUTION: Do not activate the cutting knife with the foot pedal while threading tape.
Figure 2
Application Techniques (Refer to Diagram A)
Pre-marking:
Using 200-250 ft. (60-70 m) of light rope, chain or thin wire cable for a guideline, mark the skip sequence on the chain to be followed. Example: A sash chain marked to the proper sequence with 1-inch (2.54 cm) spiral key rings.
Example: For a 10 ft. (3 m) skip line and a 30 ft. (9 m) space (10-30 sequence):
1)Mark point (A), the beginning of the first skip line, about 8 feet (2.44 m) from the beginning of the chain to line up applicator.
2)Measure 10 ft. (3 m) and mark point (B), the end of the skip line.
3)Measure 30 ft. (9 m) and mark point (A), the beginning of the next skip line.
4)Repeat steps 2 and 3 throughout the remaining length of the guideline so that the last mark is at point (A).
Diagram A
