Selling an Idea or a Product

1
Littleford Day Inc. Where Processing Ideas become
Reality.
2
Plastics Mixing,
Dispersion, Compounding and Drying Equipment for
the Plastics Industry
Littleford Day Inc. Where Processing Ideas
Become Reality.
3
Littleford Equipment for the Plastics Industry
Presentation Index
Page
Contents 4 TECHNICAL
DATA The Fluidized-Bed Option for Mixing
Drying Plastics. 5 AND
EQUIPMENT Liquid Dispersions into Resins. 6
SPECIFICATIONS The Horizontal
Fluidized-Bed Mixer for Plastics. 7
How do we build them. 8 Regular
Sizes of the Horizontal Mixers. 9
The Fluidized-Bed Mixing Advantages. 10
Our High Intensity Vertical Mixers. 11
Our Horizontal Coolers. 12
Regular Sizes of High Intensity Vertical
Mixers and Horizontal Coolers. 13
Complete Compounding Centers. 14
Pellets. Integrated Systems. 15
Drying Plastics with Littleford. 16
The advantages of The Chopper for drying.
17 APPLICATIONS Reinforced
Thermoplastics. 18 Plasticized
PVC Dry Blend. 19 Reinforced
Thermosets. 20 Plastisols.
21 Glass Reinforced Polyesters
(BMC). 22 Sheet Molding
Compounds (SMC). 23 Color
Concentrates. 24 Plastic
Powder Coatings. 25 Drying.
26 Surface Coating. 27
Thermoplastic Resins. 28
PVC Compounding and Cooling. 29
SUPPORT Rental Program 30 Service and
Spare Parts 31 Process
Development and Technical Center.
4
The Fluidized Bed Operation for Mixing Drying
The unique mixing action of the FKM series
mixers is accomplished by a horizontal shaft
which revolves at a high rate of speed rapidly
projecting and hurling the mix materials
away from the vessel wall into free space,
filling the entire vessel. The mixing action
causes the materials to crisscross in the
direction of the vessel walls and inversely back
again, providing a high volume rate of material
transfer. The mechanically fluidized bed of
particles is the basis of its mixing efficiency
and accuracy, including mixtures with diverse
specific gravities as well as other problems
such as liquid incorporation and heat transfer.
5
Chopper Action, sending fluidized particles
upward, against sprayed liquids flowing
in the opposite direction.
Superb Liquids Dispersion into Powders, through
high speed Choppers
(Showing Top Injection Type. Bottom Liquids
Injection also available)
6
Manufacturing Options
Vacuum System Stack (s) Pulse Back Filter
(s) Condenser, Receivers. Vacuum Pumps.
Material C.Steel, 304 S.S., 316 SS., Special.
Interior Std. 120 Grit or
higher.
Liquid Injection Tower, Manifold. Top and / or
Bottom Mountings.
Electric's H.P., TEFC,Expl.Proof.
Vessel Construction Atmospheric Std., Vacuum
Rated, Pressure Rated, Sanitary Construction.
FDA Ratings.
Feeding Ports
Drive Type. Sanitary or Welded Design RPMs 1 or
2 Speeds, Variable Speed. Hydraulic Coupling.
Seals Std. Packing, Positive
Pressure Mechanical.
Plows Std.,Heat Transfer, Becker
Jacket. Std. 75 PSI Other PSI Ratings Heating
Cooling
Special Bases, Load Cells.
Choppers H.P., TEFC, Expl.Proof
Blade Types
Discharge Valve Manual,Pneumatic. Ball type,
Butterfly, Spherical Slide Options.
Control Panels Manual, Automatic. RPM Control
Batch Times,
Amp,Power,Reports
7
How do we build them
Standard or Sanitary Construction. TEFC
or Explosion Proof Electric's. Full Vacuum or
rated for several Internal Pressure Ratings.
Single or Variable Speeds.
Pulse Back Filters.
8
Regular sizes for Horizontal Mixers
Working capacity depends on the process, and
is normally between 50 and 70 of total capacity.
9
Littleford Day Inc. Where Processing Ideas
Become Reality.
X
X
X
Accurate mixing of different density components.
Yes
Poor
X
Complete dispersion of liquids with dry powders.
Poor
Partial
Poor
Partial
X
X
X
Lump breaking, for control of particles sizes.
Poor
Partial
X
X
X
X
X
Fluidized-Bed particle movement for higher heat
transfer.
X
X
X
X
X
Extremely fast Batch Times of 2-4 Minutes on
dry powders.
X
X
X
Continuous deagglomeration for more efficient
drying.
Poor
Partial
10
Our High Intensity, Vertical Mixers
Manual or Automated Operations ...
Cover Pneumatic Operation. Vent Bag
Support Feeding Inlet Ports.
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
Belt Drive with Special High-Torque motor,
reinforced shaft, insulation bearings. One or
Two Speeds.
Discharge Valve Pneumatic Operations, Manual or
Temp. Controlled Perfect Seal to avoid leaks.
11
Our Horizontal Coolers
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
Access ports with safety limit switches.
Cooling / Mixing Plows designed to create a
fluidized bed and excellent thermal transference.
Typical Cooling for PVC From 240 to 120 F.
12
High-Intensity Vertical Mixers.
Horizontal Coolers.
Specifications and Regular Sizes.
Littleford High Intensity Mixers Specification
W-200 W-400 W-600 W-1200
W-1500 W-2000 Working Cap. 4
C.F. 8.8 C.F. 13 C.F. 25
C.F. 32 C.F. 44 C.F. Batch
Weight 110-145 220-325 330-450
650-900 800-1125
1060-2200 Horsepower 25/50,60
50/100,100 62/125,150 125/250,250
175/350,350 250/500,500
Littleford Horizontal Coolers Specification
K-300 K-1200 K-1600 K-2400
K-4200 K-6600 Working Cap.
6 C.F. 26 C.F. 35 C.F.
52 C.F. 90 C.F. 143 C.F.
13
Complete Compounding Centers
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
14
Pellets. Integrated Systems
Liquid Addition
Capacities LPS180 300
Kg/Hr. LPS400 600 LPS1200 1,000
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.
15
Drying Plastic Resins In The Littleford.
1.-High efficiency drying of Suspensions, pastes,
and bulk materials. 2.-Fast drying cycles and
discharge. 3.-Allows efficient drying of
sensitive materials at low Temperatures. 4.-Comple
te dispersion of agglomerates, lumps and fiber
bundles. 5.-Homogeneous mixing of dissimilar
ingredients. 6.-Drying operations from liquid
state to free-flowing powder in one
vessel. 7.-Allows liquid addition during
processing. 8.-Adapts itself to effective
recovery of costly solvents. 9.-Eliminates need
for additional processing equipment.
The Key to this State-of-the Art drying
technology is the unique,
mechanically fluidized ploughshare action
which agi- tates and individualize the
solid parti- cles to be dried. The
ploughshare action forces the product into a
3-dimensions motion that individualizes each
particle, continuosly exposing tremendous
surface area for drying. The particles
constantly contact one another, and the heated
inte- rior walls of the jacketed vessel
furthering the drying process. Our dryers
are also equipped with independently
operated, high shear choppers, to reduce the
particle size of the lumps or agglomerates, to
expo- se undried materials and ensure
thoroughly dried particle interior.
Deagglomeration further shortens drying time.
Heated Pulse Back Filter with Stack.
Wet Product
Condenser
Littleford Dryer.
Recovery Tank.
Vacuum Pump.
16
Advance Drying

The Chopper Advantages in Drying Fast,
efficient drying without lump formation
The action of the turbulent plows and the high
shear choppers reduce the forming lumps to
smaller granules, thus exposing large amounts of
new surface area for drying.
17
Reinforced Plastics
Mix Includes
Thermoplastic Powders. Beads Chopped Strand
Fiberglass.
Prior to extrusion or Injection molding, bundles
of chopped strand fiberglass must be uniformly
mixed with thermoplastic pellets, chips, beads or
powder without filamentizing the fiberglass
strands. The mechanically fluidized bed mixing
action of the Littleford mixer separates the
thermoplastic particles and gently blends in the
fragile glass bundles. In a short mix cycle,
often 15 to 30 Seconds, a 30 Glass Blend can be
attained to an accuracy of less than 1.0. There
is no degradation of the fiberglass. The blend is
discharged with the plows rotating to
prevent stratification of the mixed
materials. The very short mix cycles attainable
in a Littleford Mixer enable more frequent
batching. This means a reduction in
capital investment by utilizing a smaller volume
Littleford Mixer, rather than a large volume and
long cycle time conventional mixer. Also, the
Littleford mixer lends itself well to totally
automated operation.
Advantages 1.- 30 Seconds Mix
Cycles. 2.- No Filamentizing Of Glass
Strands. 3.- No Stratification Of
Discharged Product. 4.- Uniform Blend.
18
Plasticized PVC Dry Blend
Mix Includes
PVC Resin, Fillers, Pigments, Plasticizer,
Stabilizer.
Dry Blends of highly plasticized, filled, vinyl
polymers and copolymers to be calendered into
sheeting or flooring are prepared in the
Littleford Mixer. For high volume applications,
batches as large as 5,000 to 6,000 pounds can be
prepared in very short mix cycles. These batch
mixers are unexcelled as heat transfer vessels.
(The mechanically fluidized bed mixing action
creates tremendous particle surface exposure,
which combined with constant movement, creates
contact of all particles with the heat
transfer surfaces.) Thus, completely jacketed
mixing cylinders are able to transfer external
heat to the product at extremely high rates. Due
to the uniformity and temperature attained in the
Dry Blend, the Banbury mix cycle is usually
reduced. Banbury throughput increases of more
than 10 have been reported. Finish
product uniformity and quality has also been
improved.
Advantages 1.- Highest Coefficient Of
Heat Transfer. 2.- Low Horsepower
Requirement. 3.- Thorough Plasticizer
Absorption. 4.- Complete Product
Uniformity. 5.- Large Batch Sizes.
19
Reinforced Thermosets
Mix Includes
Phenolic Resin, Wood Flour, Fibers, Pigments.
Thermosetting molding compounds require high
shear to disperse the pigments, fillers, and
reinforcing fibers, plus exact temperature control
to protect the resin. With conventional mixing
equipment, pre-milling and post-milling
operations are usually required. A uniform flow,
labyrinth-design jacket surrounds the
circumfe- rence of the Littleford mixer, thus
providing exact temperature control. The unique
mix action creates outstanding particle to heat
transfer surface contact, resulting in an
exceptionally high coefficient of heat
transfer. The mixers, when equipped with high
speed choppers, produce the high shearrequired to
disperse and develop the pigment in a short mix
cycle. Reinforcing fibers are dispersed
uniformily without breakage or da- mage. Liquid
additives can quickly be dispersed without
agglome- rate formation. Premilling of the batch
components can be greatly reduced and postmilling
and homogenization operations completely
eliminated.
Advantages 1.- Short Mix Cycles. 2.-
No Filamentation Of Fibers. 3.- No
Stratification Of Discharged Product. 4.-
Uniform Blend.
20
Plastisols
Mix Includes
Fine PVC Resin, Pigment, Plasticizer, Stabilizer.
The unique plow-shaped design of the Littleford
mixing tools creates a shear action which
develops a suspension of extre- mely fine
powdered PVC resins in plasticizers to
produce agglomerate free plastisols. The mix
cycles are very short, hence the plastisol is
formed with little or no heat generation. The
mixing action is so uniform that there is no
tendency to form gels. In some cases, plastisols
of lower viscosity require a higher degree of
shear action. This can be provided in the
Littleford mixer by equipping the unit with a
high speed chopper located such that the mixing
plows constantly bring fresh material into their
path for effective dispersion. The mixer may be
equipped for vacuum operation to permit the
dynamic removal of entrained air from the
plastisol. The mixing cylinder can also be
completely jacketed to maintain optimum
temperature for reactions, solvations and
viscosity adjustments.
Advantages 1.- Short Mix Cycles. 2.-
No Heat Generation. 3.- Thorough Dispersion,
Usually Off The Hegeman Grind Gauge. 4.-
Mixing And Deaeration In Same Littleford
Mixer.
21
Glass Reinforced Polyesters
(BMC)
Mix Includes
Catalysts, Chopped Strand Fiberglass, Pigments,
Fillers, Polyester Resin.
Compression molding compounds of fiberglass
reinforced polyester resins can be quickly
prepared in the Littleford mixer. The Littleford
intermediate Intensity Mixer can pro- duce a
complete, quality molding compound of
fiberglass reinforced Polyester resins in very
little time without fila- mentizing the glass
fibers. Fillers, pigments and catalysts can be
homogeneously combined with the viscous Polyester
Resins in very short mix cycles without the need
for premixing the resins in a separate piece of
equipment. Mixing one or two minutes after the
addition of glass fibers causes all of the fiber
bundles to be opened and uniformly coated with
little or no fiber degradation. In addition to a
reduction in process time and equipment, the
physical properties of the final molded part are
genera- lly superior to those of parts produced
by other methods.
Advantages 1.- Short Mix Cycles. 2.-
Minimum Glass Degradation. 3.- Higher Physical
Property Of Molded Parts. 4.- Lower Capital
Cost Than Double Arm Mixers
22
Sheet Molding Compounds (SMC)
Mix Includes
Catalyst, Pigments, Fillers and Polyester Resin.
Sheet molding compounds, although of various
viscosities, are generally in the form of a
paste. The Littleford intermediate Intensity
Mixer rapidly disperses large quntities of
fillers, pig- ments and other required additives
into liquid resins to produce a homogeneous sheet
molding compound. The general mixing procedure is
to charge the liquid resins into the statc mixer,
the catalyst and dispersing agent are
added, followed by the addition of the filler,
pigment and other ingre- dients. Throughout the
process, exact batch temperature is controlled by
utilizing a uniform flow heating/cooling
jacket. The mixer can be equipped for the dynamic
removal of all gases from the product. This is
accomplished by mixing within a vacuum
environment while simultaneously deaerating. This
process substantially reduces the mix volume,
resulting in a higher bulk density. Vacuum
deaeration causes no apprecia- ble increase in
the mixing time required.
Advantages 1.- Short Mix Cycles. 2.-
Complete And Rapid Dispersion. 3.- Easily
Automated. 4.- No Heat Generation.
23
Color Concentrates
Mix Includes
Pigments, Lubricants, Beads or Pellets,
Thermoplastic Powders.
Surface coating alone is often inadequate for
dispersing a high concentration of pigments and
additives. The resin surface can not retain the
concentrations required. High concentrations of
pigment and additives must be driven into the
thermoplastic resin with great force. When the
point is reached where the resin particle
contains the maximum amount of additives it can
retain, higher concentrations can be achieved by
a homogeneous blend of additive particles within
the bed of enriched resin. The Littleford High
Intensity Vertical Mixer is well suited for this
application, with typical 1 to 2 minutes cycles.
Its mix action creates an intensive impingement
of lubricant, pigment and additives upon the
resin particles in combination with thorough
blending and complete breaking up of
agglomerates of additives, as well as
pigments. The cover is hydraucally operated, and
when open exposes the entire mixer interior for
easy cleaning between batches.
Advantages 1.- Short Mix Cycles. 2.-
Uniform Surface Coating. 3.- Agglomerate
Free. 4.- Easy To Clean.
24
Plastic Powder Coatings
Mix Includes
Pigments, Plastic Resins And Fillers.
The preparation of plastic powder coatings
requires a premix process where large resin
flakes are broken down and unifor- mly dispersed
with pigments and other additives. Following
melt-extrusion and high energy milling, a
flow agent must be precisely combined with the
premix. The premix blend is prepared in a
Littleford mixer. High speed choppers break down
the large resin flakes as the plow action effects
an intimate dispersion of pigments and
additives. A cooling jacket allows exact
temperature control. The flow agent is also
applied in a Littleford mixer after milling the
premix into a fine powder. The dual mix action
provides the critical dispersion required, while
the jacket maintains the desired temperature. Air
seal prevent hot spots around the all high
speed rotating shafts.
Advantages 1.- Rapid Deagglomeration
Of Flake Resins. 2.- Pigments Rapidly And
Thoroughly Dispersed. 3.- Short Mix Cycles. 4.-
Uniform Dispersion Of Light Density Flow
Agents.
25
Drying
Mix Includes
Plastic Resins.
Drying, often important to the value and
usefulness of many finished products, is of vital
importance in the plastics indus- try. It is
crucial to remove even trace amounts of
moisture prior to final processing. The
Littleford Mixer is an ideal Dryer. Individual
particle separation is created by the unique dual
mix action. The entire surface of each particle
is exposed for drying continuously throughout the
operation. When equipped with a heating jacket,
drying results as each particle comes in contact
with the heated jacket surface. For heat
sensitive materials, warm dry air may be injected
into the product at atmospheric pressure. The dry
air absorbs mis- ture and is removed from the
unit, carrying the moisture with it. The
Littleford Mixer, when equipped for vacuum
operation, is capable of dynamically removing
moisture within a short drying cycle. Vacuum
operation also allows the removal and recovery
of expensive solvents.
Advantages 1.- Excellent Heat Transfer
Coefficients. 2.- Dry To Low Moisture
Levels, Less Than .05 3. Vacuum,
Atmospheric Or Air Purge Operation.
26
Surface Coating
Mix Includes
Pigments, Lubricants, Thermoplastic Powders,
Beads or Pellets.
Thermoplastic resins in the form of pellets,
beads, chip or powder, require the addition of
pigments, lubricants and processing aids prior to
final processing. This can be accom- plished in a
Littleford Mixer in a very short mix cycles, as
low as 30 to 45 seconds. Blending coating
action is rapid, thorough and very gentle. The
mechanically fluidized bed mix action exposes all
product surfaces to assure complete unifor- mity
of coating. The resultant short mix cycle enables
to supply batch or continuous mixers. Continuous
operation provides high output capacities at a
modest capital investment. In applications where
thermoplastic resin pellets are utilized, the
gentle mixing action has a minimum tendency to
gall the pellets. It lends itself well to
blending ingredients having wide differences in
size, such as pellets and pigments. Because
each pellet receives a uniform surface film
coating of lubricant, a consistent amount of
dispersed pigments adheres to each pellet.
Advantages 1.- Short Mix Cycles.
30-45 Seconds. 2.- Uniform Surface Coating. 3.-
Gentle Mix Action Without Product
Degradation. 4.- Batch Or Continuous Mixer
Application.
27
Thermoplastic Resins
Mix Includes
Polyethylene Or Polypropylene Resin, Trace
Amounts Of Additive.
To meet the special requirements of certain
finished products, trace amounts of additives
must be introduced and uniformly dispersed
throughout thermoplastic resins. These
processed resins are often produced in high
volumes (2,500 to 50,000 Lbs/Hr). The
Littleford intermediate intensity batch or
continuous mixer, with its unique dual mix
action, is capable of meeting these high volume
demands with a minimum retention time. The
accuracy of additive dispersion is often within
1 coefficient of variation. When equipped with
a uniform flow cooling jacket, the
Littleford batch or continuous mixer can
eliminate conventional post-mix cooling equipment
by simultaneously mixing and cooling. This is
accomplished without any significant increase in
mixing cycle time. For such an application, for
example, The Littleford Model KM-3000 (53 cubic
feet working capacity), would be capa- ble of an
aproximate throughput of 35,000 Lbs./Hr.
Advantages 1.- Short Mix Cycles. 2.-
Uniform Additive Dispersion. 3.- High Volume
Processing. 4.- Simultaneous Cooling.
28
PVC Compounding and Cooling.
Mix Includes
PVC Resin, Pigment, Fillers Stabilizer, Modifiers.
The Littleford PVC Processing system has been
developed specifically to compound and cool
polyvinyl chloride and similar materials. A
vertical high shear, high intensity mixer has
been matched and synchronized with a low
intensity horizontal cooling unit that utilizes
the mechanically fluidized bed mixing action to
attain an extremely high degree of heat transfer.
Littleford PVC processing system is a very
compact installation with a wide range of output
capacities. A COMPLETE COMPOUNDING CENTER The
optional Littleford Compounding Center is a
complete prefabricated Package Plant designed
for High-Volume continuous processing of powdered
PVC. It combines a resin scale system, Littleford
High-Intensity PVC hot compounder and large
capacity Littleford cooler, stabilizer dispensing
sys- tem, take away system and integrated
automatic controls.
Advantages 1.- Controlled, Rapid and
Homogeneous PVC Compounding. 2.- Fastest
Heating And Cooling Cycles. 3.- Less Bow
and Blade Wear. 4.- No Cooling Bottleneck. 5.-
All U.S.A. Made.
29
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.
30
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.
31
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.