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ANCILLARY EQUIPMENTS IN PLASTICS
       Ancillaries  in  plastics  are  all  those  equipments  that  facilitates  and  support  the
       primary processing machine to produce the product in required quantities and have
       desired quality. They exist from the movement, storage, control and protection of
       material throughout the process of its production, distribution, consumption, and
       disposal.
       Material Handling is simply the physical movement of material from one location to
       another. For plastics industry it is handling of the plastic resin, be it in pellet, granule,
       powder or flakes forms, from its delivery to its storage in silos or bins and then its
       distribution to the processing equipment, i.e. an extruder hopper. The handling,
       movement or conveying of plastic resins can be through:
       Mechanical conveyors: They assist in moving raw materials or products from one
       place to another in the working premise, or through various stages of automated
       manufacturing. Belt conveyors are the most common, followed by chain conveyors,
       roller conveyors, spiral conveyors, overhead conveyors, vertical conveyors and
       conveyor systems, which may use combinations of many different conveyor types.
       Automated  conveying  systems:  The  material  is  moved  through  a  pipe  at  a
       velocity in a stream-like state of suspension. The system uses a vacuum pump with
       or without pressure blower assembly to pull the plastic resin from the storage space
       to the production area.
       Hopper Loaders: These are used to load the plastic material for the source to the
       machine  hopper  automatically,  without  human  intervention.  The  inbuilt  timers
       activates at designated time filling up the hopper with the material. This reduces
       manpower cost, prevents spillage, material losses and provides efficiency, safety,
       hygiene,  cost  effectiveness  automation  and  eliminates  contamination  in  large
       manufacturing facilities.
       Blenders: One of the primary goals in any plastic manufacturing process is the
       consistent and homogenous melting and blending of resins. Blenders offer the
       digital accuracy and rugged dependability that make process line more efficient.
       Blending systems are fully integrated, multi-material dispensing and mixing devices
       designed to precisely and consistently combine materials together prior to plastic
       processing  and  create  a  blended  material  in  pre-determined  proportions.
       Deceptively simple in appearance, the compact blenders which are available with
       touch screen control can individually weighs from 2 to 20 ingredients and blend
       them accurately. Blenders can combine materials by volume (volumetric) or by
       weight (gravimetric) and may operate either continuously (typical for extrusion) or
       by batch (typical for injection moulding). A more accurate blend means higher
       product quality at the end.
       Metal Detectors and Separators:   Mounted directly on the material inlet of the
       machine, the metal separators are used to remove micro metal particles (both
       ferrous and non-ferrous contaminants) from regrind, recycled and virgin material.
       Very often tiny metal particles in the melt can cause causes heavy damage to the
       plasticizing screw or barrel, resulting in costly breakdowns during injection / blow
       moulding and extrusion process. Most commonly a Magnetic metal ring is kept
       inside hoper in small production facilities.


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