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Littleford Day Inc. Where Processing Ideas become
Reality.
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PVC Compounding Equipment Integrated
Systems for formulation of rigid and flexible PVC
Compound
Littleford Day Inc. Where Processing Ideas
Become Reality.
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Littleford Equipment for the PVC Industry
Presentation Index
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Littleford Day
The Advantages of a Brand.

• Larger Productivity. Tons/Hr.
• Superior Compound Quality.
• Less operation costs.
• Experience in PVC compounding.
• Direct service throughout America.
• Modern Technology.
• Insuperable Quality.

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The Selection Process for
PVC Compounders

• Capacity
• Type of Compound
• Type of Operation
• Discharge
• Double-Batch Option
• Accessory Equipment

• Tons./ Month.
• Rigid or Flexible.
• Manual, Batch or Automatic Operation
• Manual or Automatic
• Current or Future option.
• Loaders and dosifying systems.

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Our Mixers
Cover Pneumatic Operation. Vent Bag
Support Feeding Inlet Ports.
Manual or Automated Operations ...
High Strength Vessels with 1/2 Insulation,
SS-304 Construction
Deflector Blade with thermocouple liquids tube.
Impellers designed for homogenous Temp. raise,
High Dispersion. Coated with Abrasion Resistant
Materials.
Designed to avoid Over-Heated and Wearing spots.
Littleford
Discharge Valve Pneumatic Operations, Manual or
Temp. Controlled Perfect Seal to avoid leaks.
Belt Drive with Special High-Torque motor,
reinforced shaft, insulation bearings. One or
Two Speeds.
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Our Coolers
Feeding, Double Batch and Vent Ports.
Cooling Jacket designed for high rates
of thermal transference. For 45 PSIG
Reinforced Shafts and Drives.
Littleford
Contour discharge Valve
Access ports with safety limit switches.
Cooling / Mixing Plows designed to create a
fluidized bed excellent thermal transference.
Typical Cooling for PVC From 240 to 120 F.
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Specifications
Of the most commonly used configurations
Equipment W200/K300 W600/K1200 W600/K1600 W1200/K2
400 Mixer Working Cap. 113 Lts. 368 Lts. 368
Lts. 710 Lts. Batch Weight 110-140
Lbs 330-450 Lbs 330-450 Lbs 650-900 Lbs. Power
25/50 o 60 HP 62/125 o 150 HP
62/125 o 150 HP 125/250 o 250
HP Cooler Working Cap. 170 Lts. 737 Lts. 993
Lts. 2553 Lts. Water Req. 15 GPM 35 GPM 35
GPM 70 GPM Power 5 o 10 HP 20 HP 25
HP 30 o 50 HP Capacity PVC - Flexible 250-470
Kg/H. 750- 1450 Kg/H 900- 1800
Kg/H 1475-2900 Kg/H PVC - Rigid 435-658
Kg/H. 1270-2040 Kg/H 1500-2630 Kg/H
2540-4080 Kg/H Double.Batch ---------
1800-2270 Kg/H 2360-3180
Kg/H 3600-5450 Kg/H
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How much do I want?
Extra Hoppers
Liquid Addition System.
CONVENIENCE Resin Weight Hopper
FANCY Minor
Ingredients
Addition Systems
THE HEART Mixer. One or Two Speeds
MODERN Double Batch Op.
Littleford
USUAL COMPLEMENT High efficiency cooler
Littleford Day Integral Solutions for PVC
Pneumatic Transport
To Bins
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A Model for each case
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The Ideal Batch Size.
Best Output does not mean working the equipment
at its maximum batch size, since processing
time also increases. Each case requires an ideal
load for optimum performance.
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Optimizing 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.

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PVC Cooling Rules

• 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 46C
  against 43C 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.

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Pellets. Integrated Systems
Liquid Addition
Capacities LPS180 300
Kg/Hr. LPS400 600 Kg/Hr. LPS1200 1,000
Kg/Hr.
Dust Collector
Weight Bin
Pellets Cooler
Mixer
Littleford
Cooling Fan
Extrusion Bin
Pelletizing Head
Pneumatic Conveying Fan
Extruder (Optional)
Pre-Assembled Plants for PVC Pellets
manufacturing.
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W-10 High-Intensity Rental Mixer
Littleford Day Rental Program
VERTICAL MIXER FOR PVC COMPOUNDING
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,
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.
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25 28
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Rental Programs
In addition to our Process Development Testing
Programs, our Rental Program offers a unique
opportunity to test our processing equipment in
your own Plant.
A portion of the rental cost, under this program,
will be applied to the purchase of any related
Littleford Day Equipment.
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Service Spare Parts

• Exclusive Dept. for customer assistance.
• Laboratory for formulations optimization.
• Specialized Field Service Engineers.

• Stock of common required parts.
• Top American Mfrd. Parts SKF, Falk, Chesterton,
  etc.,etc.
• Assistance in Spanish, if required.

The Best Service Department. Direct Sales Force.
No Reps. Own Manufacturing Facilities.
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Process Development Testing
Main Office Florence, Ky. Ph.- [phone].
Fax [phone] Latin America Mexico Cy.Ph.-
(52-5)550-9459. Fax [phone]

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.
Cosmetics Detergents Soaps Foundry
Additives Pharmaceutical Ceramics Fertilizers/Seed
s Rubber Mortar Mixes Brake Linings 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
Technical Center Main Equipment 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


Bring Us Your Toughest Mixing, Drying
Reacting Problems.