FEEDING SYSTEMS

 

 

 

SINGLE SCREW FORCE FEEDING SYSTEMS FFVE

---

MODELS	FF65VE	FF85VE	FF105VE	FF125VE	FF160VE	FF200VE
Capacity (kg/h)	160	280	500	700	1300	1700
Installed power(kW)	9,5	9,5	11	13	16,5	22,5
Vertical screw diameter(mm)	80	97	103	118	158	198
Silo capacity (m3)	2	2	2	2,5	2,5	2,5

---

The forced feeding system is the most effective system for the introduction into the extruder of ground material with a low specific weight, particularly suitable for thermoplastic film.  

It is essentially made up of a collection bin and two areas for moving materials: a variable speed stirrer, with four blades, placed on the bottom of the bin, constantly feeds the vertical locking screw, whose speed is maintained constant at a value set based on the characteristics of the material processed. 

The machine is electronically controlled: the two electrical motors, with alternating current, are regulated by inverters, while a PLC control regulates the rotation speed of the stirrer on the basis of electrical absorption by the extruder motor.

In this way, the system allows the user to take advantage of the whole power applied to the extruder, independently from the apparent density of the material processed.

---

 

 

CONICAL AND CILINDRICAL FORCE FEEDING SYSTEMS DS DSC

---

MODELS	DS65	DS85	DS105	DS65C	DS85C	DS105C
Capacity (kg/h)	160	280	500	160	280	500
Installed power (kW)	10	10	10	6,7	6,7	6,7
Vertical screw diameter (mm)	▼	▼	▼	60	80	100
Silo capacity (m3)	6	6	6	6	6	6

---

The DS and DSC series force feed systems allow easy introduction of materials coming from various types of work, characterised by different specific weights, to the extruder.

More precisely: the DS series uses a special conical screw, designed to process leaf, film, expanded, rigid and densified material and granules, while the DSC series is equipped with a more economical, cylinder-shaped locking screw which allows the processing of rigid and densified materials and granules.

The feeding system is essentially made up of a collection bin (equipped with inspection/cleaning hatch) and three areas for moving material: a constant-speed stirrer, with four blades, placed on the bottom of the bin, feeds the horizontal extraction screw which, in turn, feeds the vertical locking screw which has the task of forcing the material to the extruder.  

The machine is electronically controlled: the speed of the locking screw is set using an inverter and kept constant on the basis of the type of material processed while a PLC control automatically regulates the rotation speed of the (horizontal) extraction screw using an inverter on the basis of electrical absorption by the extruder motor.

 

 

 

FEEDERS TN TR AC ACC

---

MODELS	TN65	TN85	TN105	TN125	TN160
Capacity (l)	100	120	150	210	600
MODELS	TR65	TR85	TR105	TR125	TR160
Capacity (l)	100	120	150	210	600
Installed power (kW)	0,25	0,25	0,37	0,37	0,55
MODELS	AC65C	AC85C	AC105C
Capacity (kg/h)	160	280	500
Vertical screw diameter (mm)	60	80	100
Installed power (kW)	2,2	2,2	2,2
MODELS	AC65	AC85	AC105
Capacity (kg/h)	160	280	500
Vertical screw diameter (mm)	▼	▼	▼
Installed power (kW)	5,5	5,5	5,5

---

The range of feeders for extruders supplied by P.R.T. Service & Innovation is varied and based on the type of material which the customer intends to work with. It ranges from the simple TN series hopper, suitable for material which flows very easily to the hopper with a rotary valve TR, which allows the user to dose materials in a suitable way with an apparent density of up to 0.3-0.35 kg/dm³. The range is completed by the conical feeder with ACC cylindrical screws which allows the user to process rigid or densified material with a density lower than 0.3 kg/dm³ and the conical feeder with AC conical screws which offers the possibility to feed also leaf, film and expanded material.