Improve Paste Consistency

The MAC Paste Prep System mounts between the paste mixing cone and the paster hopper. It crushes large oxide nuggets to around 0.5 mm (0.020 in) to help prevent line stoppages which occur when large oxide nuggets try to pass through the hopper and cause continuous strip or grids to tear or jam under the hopper. Furthermore, it makes the paste more uniform allowing a smoother surface on the plates as they pass the hopper. The system consists of a box frame, two hardened steel rolls and a drive to power the rolls.

Paste preparation starts with the paste dropping from the mixing cone into the MAC Paste Prep System. The paste passes between two counter-rotating rolls which crush nuggets that are around 2 mm (0.080 in) thick or thicker, depending what gap is set, as they pass between the rolls. The processed paste is scraped off the rolls and drops into the paster hopper. The maximum amount of paste the MAC Paste Prep System can process is dependent on the gap between the rolls and the maximum speed the rolls can run without losing the adherence between the paste and the rolls.

 The MAC Paste Prep System mounts to the base of the cone feeder, which is  mounted on a pivot so it can be rotated out away from the hopper to access for cleaning and rotating the hopper up. All control buttons are mounted on the main unit, including a variable speed dial.

The mounting brackets are custom designed and require specific dimensions of the lower section of the cone feeder and top of the hopper. Minimum vertical space between the top of the hopper and bottom of the lowest item on the cone feeder is 276 mm (10.88 in) although 317 mm (12.50 in) is recommended. 

• Provides smoother plate finish
• Prevents line stoppages caused by paste inconsistency 
• Eliminates large nuggets that can damage the strip or grids
• Mounts between your mixer and paster conserving floor space

Gap Size                             Speed

• 0.889 mm (0.035in)         Up to 13618 cm³/min (831 in³/min)
• 1.397 mm (0.055 in)        Up to 21402 cm³/min (1306 in³/min)
• 1.005 mm (0.075 in)        Up to 29185 cm³/min (1781 in³/min)

• Customer’s choice of English or metric fasteners
• Equipment is made to customer’s electrical requirements
• Industrial grade rust preventive paint in color of customer’s choice (Safety blue is stock)

• CE Conformity Certification
• Spare parts available for all MAC Equipment

• Personnel: N/A
• Electrical: 480 V, 3-phase, 60 Hz, 8 kVA
  Control Voltage: 24 V DC
• Ambient Operating Temperature: 0°-45° C (32°-13° F)
• Ventilation: N/A
• Installation Location: Each system may require special mounting due to the paste mixer and the paster that it will mount between. This is done with custom designed catch/pivot brackets that will mount the paste prep system onto the mixer. See main assembly drawing and installation instructions for each specific system for proper location and installation.
• Approximate Shipping Weights and Dimensions:
  • 576 kg (1,270 lbs)
  • 914 x 914 x 762 mm (36 x 36 x 30 in)