Machines used for bales of reclaimed fluff pulp

fluff pulp machines - process - recyc phpschema 1

Two types of machines are required to use bales of reclaimed fluff pulp: Bale opener and Metering feeder. Here are some principles of operation for these two types of machines.

Article RecycPHP - fluff pulp machines - schema 11. Bale opener Type 1

Principle of operations:

  • Bales are placed on the bales conveyor (1)
  • Bales conveyor move at a speed related to the requirement of the metering feeder (see below topics 3 or 4)
  • The needle conveyor breaks the bale
  • An equalizing roll (A) assures there is no fluff clump
  • The roll (B) is helping to clean the needles
  • The fluff fibers fall into a hopper to be transported to one or many metering feeders by a fan (C) or falls directly into a metering feeder.

2. Bale opener Type 2

Article RecycPHP - fluff pulp machines - schema 2Principle of operations:

  • Bales are placed on the bales conveyor (1)
  • Bales conveyor move at a speed related to the requirement of the metering feeder (see below topics 3 or 4)
  • Bales are broken when they reach high-speed needle rolls (3)
  • Fluff fibers are transported to one or many metering feeders by a fan (C).

3. Metering feeder Type 1

Article RecycPHP - fluff pulp machines - schema 3Principle of operations:

  • Fluff coming from the bale-opener fan (see topics 1 or 2) is separated from air (with a cyclone or a rotating perforated drum (D)).
  • Fluff falls into an accumulator (E)
  • Fluff is transported by 2 funnel shaped conveyors (F). Speed of conveyor is connected to diapers machine speed to determine the fluff volume required.
  • A fan (G) brings the fluff to the drum forming section. One metering feeder is required by a drum forming.
  • The logic control are as followed :
    1. Sensor a high level: Send to the bale opener a signal to stop the bales conveyor.
    2. Sensor b low level: Send to the bale opener a signal to increase the speed of the bales conveyor to fill the accumulator (E).
    3. Sensor c critical low level: Default alarm. Send a signal to the diapers line to stop using the reclaimed fluff and increase the speed of virgin fluff pulp rolls to keep the same weight.

4. Metering feeder Type 2

Article RecycPHP - fluff pulp machines - schema 4Principle of operations:

  • Fluff coming from the bale-opener fan (see topics 1 or 2) arrive in an accumulator (E). The surplus of air passed through a vacuum conveyor (J).
  • Fluff stay on the vacuum conveyor (J). The web is equalized by a series of high speed needle rolls. Speed of conveyor is connected to diapers machine speed to determine the fluff volume required.
  • At the exit of the vacuum conveyor, a fan (G) brings the fluff to the drum forming section. One metering feeder is required by a drum forming.
  • The logic control are as followed:
    1. Sensor a high level: Send to the bale opener a signal to stop the bales conveyor.
    2. Sensor b low level: Send to the bale opener a signal to increase the speed of the bales conveyor to fill the accumulator (E).
    3. Sensor c critical low level: Default alarm. Send a signal to the diapers line to stop using the reclaimed fluff and increase the speed of virgin fluff pulp rolls to keep the same weight.

 

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