Transcript Littleford Day Inc. Where Processing Ideas become Reality.

Littleford Day Inc.
Where Processing Ideas become Reality.
PVC
Compounding
PVC Compounding Equipment
Integrated Systems for formulation of rigid and flexible PVC Compound
Littleford Day Inc.
Where Processing Ideas Become Reality.
Littleford Equipment for the PVC Industry
Presentation Index
PVC
Compounding
Page
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Contents
Advantages of the Littleford Equipment for PVC Compounding.
The Selection Process.
Our Mixers.
Our Coolers.
Specifications.
How much do I want?
A Model for each case.
The Ideal Batch Size.
Optimizing PVC compounding.
PVC Cooling rules.
Pellets. Integrated Systems.
W-10 Pilot & Rental Unit
Rental Programs.
Service and Spare Parts.
Process Development and Testing.
Littleford Day
The Advantages of a Brand.
PVC
Compounding
 Larger
Productivity. Tons/Hr.
 Superior Compound Quality.
 Less operation costs.
 Experience in PVC compounding.
 Direct service throughout America.
 Modern Technology.
 Insuperable Quality.
PVC
The Selection Process for
PVC Compounders:
Compounding

Capacity

Tons./ Month.

Type of Compound

Rigid or Flexible.

Manual, Batch or
Automatic Operation

Manual or Automatic

Current or Future
option.

Loaders and dosifying
systems.

Type of Operation

Discharge

Double-Batch Option

Accessory Equipment
Our Mixers:
PVC
PVC
Compounding
Compounding
Cover:
Pneumatic Operation.
Vent Bag & Support
Feeding Inlet Ports.
Manual or Automated
Operations ...
High Strength
Vessels with 1/2”
Insulation, SS-304
Construction
Designed to avoid
Over-Heated and
Wearing spots.
Discharge Valve:
Pneumatic Operations,
Manual or Temp. Controlled
Perfect Seal to avoid leaks.
Deflector Blade with
thermocouple & liquids
tube.
Littleford
Impellers designed for
homogenous Temp. raise,
& High Dispersion.
Coated with Abrasion
Resistant Materials.
Belt Drive with Special High-Torque
motor, reinforced shaft, insulation &
bearings.
One or Two Speeds.
Our Coolers:
PVC
Compounding
Cooling Jacket designed for high rates of
thermal transference. For 45 PSIG
Feeding, Double Batch and
Vent Ports.
Reinforced
Shafts and
Drives.
Littleford
Contour discharge
Valve
Cooling / Mixing Plows designed
to create a fluidized bed & excellent
thermal transference.
Access ports with safety
limit switches.
Typical Cooling for PVC: From 240° to 120° F.
Specifications
Of the most commonly used configurations
PVC
Compounding
Equipment
W200/K300
W600/K1200
W600/K1600
W1200/K2400
Mixer
Working Cap.
113 Lts.
Batch Weight
110-140 Lbs
Power
25/50 o 60 HP
368 Lts.
330-450 Lbs
62/125 o 150 HP
368 Lts.
710 Lts.
330-450 Lbs
650-900 Lbs.
62/125 o 150 HP 125/250 o 250 HP
Cooler
Working Cap.
Water Req.
Power
170 Lts.
15 GPM
5 o 10 HP
737 Lts.
35 GPM
20 HP
993 Lts.
35 GPM
25 HP
2553 Lts.
70 GPM
30 o 50 HP
Capacity
PVC - Flexible 250-470 Kg/H. 750- 1450 Kg/H
PVC - Rigid
435-658 Kg/H. 1270-2040 Kg/H
Double.Batch
--------1800-2270 Kg/H
900- 1800 Kg/H
1475-2900 Kg/H
1500-2630 Kg/H 2540-4080 Kg/H
2360-3180 Kg/H
3600-5450 Kg/H
¿How much do I want?
PVC
Compounding
Extra
Hoppers
Liquid Addition
System.
CONVENIENCE:
Resin Weight Hopper
MODERN:
Double Batch Op.
FANCY: Minor
Ingredients
Addition Systems
Littleford
THE HEART: Mixer.
One or Two Speeds
USUAL COMPLEMENT:
High efficiency cooler
Pneumatic
Transport
To Bins
Littleford Day
Integral Solutions for PVC
A Model for each case:
PVC
Compounding
Most common models
7200
W1200/K2400
5000
3600
3170
2600
Kgs / Hr.
W600/K1600
1800
Double Batch
Rigid PVC
Flexible PVC
2270
2000
1450
W600/K1200
1470
1470
1000
W400/K1200
650
650
450
W200/K300
0
2000
4000
6000
8000
The Ideal Batch Size.
PVC
Compounding
Examples of Output vs Batch Sizes.
2500
2000
Kg/Hr
W200
W400
W600
1500
1000
500
0
25
50
75 100 125 150 175 200 225 250 275 300
Kgs.
Best Output does not mean working the equipment at it´s
maximum batch size, since processing time also increases.
Each case requires an ideal load for optimum performance.
Optimizing PVC Compounding:
PVC
Compounding
 Single
Rule: There is no single rule.
.
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First Idea: Add stabilizers and plastisizers once the resin has reached around 60-80° C, for an improved
liquid absortion into the resin.
Second Idea: If the liquids are preheated before feeding them, batch time can be lowered up to 1 minute.
Third Idea: Following powders can be added in several ways. If a big load of powder is fed, try to avoid
lowering the temperature of the batch, by adding it slowly.
Once all the components have been fed, a 1 to 1.5 minutes final mix is usually required.
THEORY: A proper dispersion is based in adequate Mixing Times & Temperatures.
AN INTERESTING STRATEGY (not to be used in all cases):
1.- Preheat the mixer to 100° C and add the resin at high speed..
2.- Heat the resin to 70-80° C, so it may expand.
3.- Add liquids, if possible preheated to 55° C. Mix until they may be incorporated.
4.- Feed remaining powders and have final mix of 1 to 1.5 minutes.
ATRACTIVE TIPS:
It is important to have a proper vortex. Adjust the attack angle of the internal deflector and mixing blades.
Batch Size: A larger batch size does not necessarily means larger productivity, since mixing times also
increases. There is an ideal ratio of Batch Size/ Batch Time which maximizes productivity.
PVC Cooling Rules:
PVC
Compounding






PVC is a bad heat transfer element. Tends to keep the heat that got in the
mixer. If it is going to be stored, it has to be cooled.
If a cooled water is used (down to 7° C, commonly obtained in conventional
chillers), cooling time is reduced up to 50%.
Each case requires a top temperature at the cooler discharge. In order to
fully optimize cooling time, work should be done for the maximum allowable
temperature (discharging at 46°C against 43°C could mean several minutes).
Tips to optimize cooling: 1.- Avoid moisture condensations inside the cooler
by installing a By-Pass valve for the cool water, for periods in which the
cooler is not used, to avoid over-cooling.
2.- Periodically clean and wash the cooling jacket. 3.- Do not over fill the
cooler.
4.- As an option, some cool powders, such as filling agents, can be fed
directly to the cooler, which greatly reduces cooling time. The mixing action
of the cooler plows mix and incorporates these powders.
Pellets. Integrated Systems
PVC
Compounding
Capacities:
LPS180:
300 Kg/Hr.
LPS400:
600 Kg/Hr.
LPS1200: 1,000 Kg/Hr.
Liquid Addition
Dust Collector
Weight Bin
Pellets Cooler
Mixer
Littleford
Extrusion
Bin
Extruder (Optional)
Cooling Fan
Pelletizing
Head
Pneumatic Conveying
Fan
Pre-Assembled Plants for PVC Pellets manufacturing.
Littleford Day
Rental Program
W-10 High-Intensity Rental Mixer
VERTICAL MIXER FOR PVC COMPOUNDING
Specifications
3 HP Motor. Variable Drive.
Removable Mixing Elements.
Ammeter & Tachometer.
75 PSI Jacket.
Movable Deflector Vane.
Integrated Base Mounted on
Casters.
Weight (Aprox.): 400 Pounds.
44”
25”
28”
Compact, high intensity mixer designed for applications
that require a high amount of mechanical shear (such as
PVC compounding or pigments dispersion). The mixing
action of this vertical bowl unit is accomplished by the
high speed rotation of the impellers which consist of a
horizontal plow or initiator setting the mix in motion in
conjunction with an angular plow or accelerator which
imparts the shear into the mix. The high speed rotation
of the mixing impellers creates a high shear pumping
vortex mixing action which keeps the mix in a combined
rotary, horizontal and vertical movement, resulting in
fast homogenization.
The mixing vortex is controlled
by a deflector vane that enters the mix from the lid and
by the rotating speed of the impellers.
The deflector
vane is equipped with a thermocouple for measuring
product temperature and an injection tube for liquid
addition capability through the vane.
It discharges
through a manually operated plug valve at the front of
the unit.
Installed in an integrated base mounted on
casters,
Rental Programs
In addition to our Process Development & Testing Programs, our
Rental Program offers a unique opportunity to test our processing
Compounding
equipment in your own Plant.
PVC
Batch Mixing / Processing
Ploughshare Units, both
for atmospheric / vacuum
and Pressure Ops. : From
Table-Top 5 & 20 Lts units
to Pilot 130 Lts. Machines
Larger sizes are available.
Daymax # 10 Dispersers,
for high quality dispersions
of solids into liquids, such
as plastisol, varnish, paint,
and other applications.
W-10 High - Intensity
vertical mixer, for PVC
Compounding and /or
other applications requiring High-Shear Op.
Ten Liters Capacity.
FA-3.5 Mixer, Nauta-Type,
for special mixing / drying
requirements. 24.6 Gallons
Working Capacity.
A portion of the rental cost, under this program, will be applied
to the purchase of any related Littleford Day Equipment.
Service & Spare Parts
PVC
Compounding



Exclusive Dept. for
customer assistance.
Laboratory for
formulations &
optimization.
Specialized Field
Service Engineers.
The Best Service Department.
Direct Sales Force. No Reps.
Own Manufacturing Facilities.



Stock of common
required parts.
Top American Mfrd.
Parts: SKF, Falk,
Chesterton, etc.,etc.
Assistance in
Spanish, if required.
Process Development & Testing
Main Office: Florence, Ky. Ph.- (606) 525-7600. Fax: 525-1446
Latin America: Mexico Cy.Ph.- (52-5)550-9459. Fax: 550-9459
PVC
Minutes away from Greater Cincinnati Airport, Our Lab. Center
is fully equipped with all the required machinery for product
development: Mixers, Dryers, Reactors, Granulators, Intensive
Mixers-Coolers and support equipment such as filtering and
vacuum drying systems.
Compounding
Cosmetics
Detergents & Soaps
Foundry Additives
Pharmaceutical
Ceramics
Fertilizers/Seeds
Rubber
Greater
Mortar Mixes
Cincinnati
Brake Linings
Airport
Powdered Metals
Herbicides
Flame Retardant Chemicals
Pigments & Color Flushing
BMC & SMC Plastics.
Color Concentrates
PVC Compounding
Coatings
Plastisols
Adhesives & Caulks
Inks & Varnish
ChemicalReactions & Drying
Cellulose Reactions
Spices
Chocolate processing
Gelatin & Powdered drinks
Bakery Mixes
Instantanization
To Cincinnati
I-275
Technical Center Main Equipment:
I-75
Donaldson Rd.
Turfway Rd.
U.S. 42
Exit 180
Florence
Union
Industrial
Road (1 Mi)
(1/2 Mi)
7451 Empire Drive
Florence, KY. 41042-2985
To Lexington
Bring Us Your Toughest
Mixing, Drying & Reacting
Problems.
FM-130 Mixer/Processor Ploughshare
DVT-130 Polyphase Reactor
KM-150 Continuous Mixer/Processor
M-5 Lab. Mixer & Dryer
W-180/K-300 PVC Compounder
W-10 High Intensity Mixer
Daymax 10 Pastes Disperser
Daymax 100 Pastes Disperser
Mixtruder Sigma Double-Arm Mixer
Mogul Tangential Sigma Mixer
Cincinnatus Overlapping Sigma Mixer
FA-10 Nauta Processor