Pelletizers and Dicers.

PRODUCT LINES REVIEWED

AMERICAN LEISTRITZ EXTRUDER CORP.

See Leistritz.

BERINGER LLC 

WRP water-ring pelletizing systems feature a hot-cut, water-ring die-face system that minimizes sensitivity to process conditions. Dry die-face cut and water-ring pellet quench do not freeze or slow the flow of polymer through the die. Easy start-up and low energy consumption achieved because knife assembly cuts molten polymer in air instead of cuffing a semi-molten extrudate underwater or a hardened strand.

Each cutting blade individually flexes and adjusts to the die-plate surface. Centrifugal dryer removes surface water from pellets. Fast cleanout. Throughput rates from 500 to 5000 lb/hr.

BERLYN EXTRUDERS, INC.

Strand pelletizers with capacities to 5000 lb/hr and underwater pelletizers with cooling and dewatering devices.

BERSTORFF

Water-ring pelletizers from 50 to 16,000 lb/hr; underwater pelletizers from 6600 to 80,000 lb/hr featuring unique design for soft, difficult-to-cut, products such as PP; and hot die-face and water-spray pelletizers for PVC to 8800 lb/hr.

BLACK CLAWSON CONVERTING MACHINERY CORP.

Six models of underwater pelletizers and three models of water-ring pelletizers handle rates from 100 to 60,000 lb/hr. Small systems for reclaim, product development, and testing. Ultra-high concentrations of pigments and very high melt indexes can be handled.

Accessories include heated and nonheated die plates, cleanable pellet dryers, temperature-control panels, water-recirculation systems, and pellet heating. Modular construction for rapid disassembly and simple maintenance.

C.W. BRABENDER INSTRUMENTS INC.

Laboratory pelletizer with a revolving helical rotor capable of cutting 1 to 4 strands 1/8-in, long. Unit has a variable strand speed of 1.5 to 49 ft/min with digital display and potentiometer, and d-c motor with electronic speed control. Mounted on casters with foot brake.

CARL G. BRIMMEKAMP & CO., INC.

Pelletizing systems for up to 1400 lb/hr include underwater and dry-face pelletizers, and eccentric die-face pelletizers, as well as laboratory strand-type units. Washing systems offered for extremely dirty reclaimed materials.

BROWN PLASTICS ENGINEERING CO.

Strand pelletizers for small production, laboratory, or school use have a 2-in, face with driven pull rolls coordinated with a driven rotor. Plain or stainless steel. Also rebuilds pelletizers.

CALIFORNIA PELLET MILL CO.

Pellet mills from 2 to 500 hp for repelletizing scrap thermoplastics. Units operate by compressing fluff between two rotating steel rollers and a multiple-hole die. Frictional heat softens material so it coheres. Pellets are cut to length by adjustable knives. Bulk density of original fluff increases four to eight times. Pellet lengths and diameters can vary. Capacities from 500 to 18,000 lb/hr.

CONAIR

Manufactures strand, water-ring, and die-face pelletizers and accessories. Strand pelletizers for most any engineering resin or low-viscosity material available with rotor diam. from 6 to 12 in., widths from 4 to 32 in., and capacities from 180 to 22,000 lb/hr. T-Series features easy-access cutting chamber for simplified maintenance and cleaning. Metric series built with European drives and performance standards.

Waterslide pelletizing systems use an inclined water conveyor to condition soft strands prior to dry or wet cutting by a strand pelletizer. Systems improve cut quality and minimize dust and fines. Units include a self-threading feature to ensure fast start-up and minimize waste and strand breakage. Pellet dryers, classifiers, and transfer systems can be supplied with units.

D&S MANUFACTURING CO., INC.

Rotary helical pelletizers, rotary helical dicers, and stair step dicers. Ancillary products include a line of high quality knives for use in all types of size reduction equipment. Many knives manufactured of special alloys and/or special treatments to enhance knife life.

DAVIS-STANDARD CORP.

Underwater pelletizer systems from 500 to 10,000 lb/hr. Melt flow is directed through a die plate with cutting blades rotating in a vertical plane. Blades are driven by d-c scr drive. Drive shaft is aligned to maintain the blades squarely against the die-plate surface. Blades easily removed for sharpening or replacement. When reassembled, precise alignment of blades against the cutting face is said to be preserved. Complete assembly includes pelletizer and drive, spin dryer, water filtering and tempering system, and, if necessary, hot-oil system for die plates.

DAVIS-STANDARD KILLION

Strand pelletizers for lab or small-scale production in bench and floor models. Feed throats up to 2 in. wide, variable speed drive, and heavy-duty design.

DICER CORP.

Compounding and reclaim WebPRO (next generation of Bolton) dicers and systems. Supplies wear parts for all Bolton and Cumberland dicers including reconditioning, IonWEAR cutterheads, and Cumberland rotor knives/bedknives. Support and technical services offered.

FARREL CORP.

Underwater pelletizers from 1000 to 100,000 lb/hr process fall range of polymers including LDPE, HDPE, PP and PS. Options include standard, heat-channel, and heat-exchanger pellet plates with steam or oil heating. Electric or hydraulic cutter motor. Also dry-face pelletizer for temperature-sensitive materials or polymers where water contact is to be avoided.

GALA INDUSTRIES, INC.

Underwater pelletizers produce 20 to 30,000 lb/hr. Pelletizing systems include die plate, dryer, tempered-water system, control/power panel and produce up to 12,000 lb/hr. Centrifugal dryers, sold as part of a system and separately, can dry 20 to 150,000 lb/hr. System op[incomplete text from original publisher]

LEISTRITZ

Hot-face pelletizers supplied only as part of complete lines.

PLASTICS EQUIPMENT MARKETING SERVICES

Production and laboratory pelletizers 2 in. and larger.

POMINI DIV. TECHINT TECHNOLOGIES, INC.

Three types of pelletizing heads for use with extruders or gear pumps:

* Underwater pelletizer with outputs from 1000 to 50,000 lb/hr for polyolefins and PS. Options include beat exchanger and heat-channel pellet plates for steam or oil heating.

* Water-ring pelletizer from 1000 to 10,000 lb/hr for any grade of polyolefins.

* Dry-face pelletizer from 1000 to 8000 lb/hr for thermally sensitive mat-erials such as cable compounds, PVC, and other non-water-compatible polymers.

Hydraulically actuated slide-plate screen changers available for any type of pelletizer or die. Turnkey, custom-designed strand or other pelletizing lines with full automation provided.

PROCESSING TECHNOLOGIES, INC./PTI

Trident series CPF (continuous polymer flow) water-ring pelletizers available in Models 1000S, 2000S, 3000S, 4000S and 5000S for extruders from 3 1/2- to 8-in diam. with throughputs from 1000 to 5000 lb/hr. Fully equipped units use heavy-duty, oversized componentry throughout and are easy to set up, operate and maintain. Systems offer similar design innovations for spare-parts interchangeability.

RANDCASTLE EXTRUSION SYSTEMS

Strand pelletizers include micro-pelletizer line, which makes pellets 0.02 x 0.02 in. and 0.06 x 0.06 in. for feeding small extruders in the 1/4- to 1/2-in. range. Pelletizer converts to a two-roll puller or torque winder. Cantilever design permits ready access to working components for cleaning and maintenance.

Also larger (2-in.-wide) two-function pelletizer. Both nip rolls have pneumatically adjustable pressure and are mechanically driven for pulling irregular or slippery strands. Quick-change components for fast cleaning or service. Quick-change parts also convert unit to a two-roll puller with both nip rolls driven for pulling rod, strips, tubing and profiles.

RIETER CORP. PELLETIZING MACHINERY GROUP

Strand pelletizers (conventional and self-stranding) with capacities from 100 to 33,000 lb/hr.

Conventional Primo Line is a simplified design for low cost and easy maintenance. Available in cutting widths from 50 to 300 mm and capacities in excess of 5,000 lb/hr.

Vario line comes in conventional (Vario ASG), self-stranding wet cut (Vario USG), or self-stranding dry cut (Vario ATG or Vario JSG). Machines provide automated strand start-up and rethreading during operation, minimizing waste and optimizing throughput. Available in sizes from 300 to 600 mm widths with capacities to 20,000 lb/hr.

Opto 900 self-stranding wet cut pelletizer available (like Vario USG) in horizontal or vertical configuration with cutting width of 90Q mm and capacity in excess of 33,000 lb/hr.

SANDVIK PROCESS SYSTEMS, INC.

Rotoform Process continuously forms melts at up to 600 F into small drops, which solidify on a steel-belt cooler into uniform, round pastilles in sizes from 0.8 mm to 50 mm. The dust-free process offers no contact between product and cooling water, eliminating need for energy to dry pellets. Cooling water is not contami-nated, and cutters are not needed, lowering energy consumption and maintenance. Process can be used for products with melt viscosities up to 80,000 cp at temperatures under 600 F.

SCHEER BAY CO.

Strand pelletizers include the SGS-E series with capacities from 2 to 3400 lb/hr and the SGS-L series with capacities from 3400 to 16,700 lb/hr. Both series offer lower noise levels, ease of maintenance, improved cleaning capability, quicker changeover and durability.

Waterslide pelletizing systems for producing thermoplastic pellets available in wet or cry cut versions. Systems offer automated start-up, rethreading of broken strands, dust-free pellets, low noise level and are custom designed. Systems are suitable for operations with reactors, autoclaves, and extruders using a strand die.

THERMOPLASTICS ENGINEERING CORP.

Strand pelletizers for lab and small productions come with 2-, 4- or 6-in.-wide rotors. Frames designed to the application. Interchangeable gear sets for varying pellet lengths.

WAYNE MACHINE & DIE CO.

Yellow-Jacket heavy-duty strand pelletizers for laboratory and production ap-plications in 2- and 3-in, models, which have eight-tooth steel straight or helical rotor. Both models feature a four-sided bed knife, which can be turned four times before requiring replacement. Other features are d-c drives from 1 1/2 to 5 hp, gear drive on rubber and knurled rollers for positive strand movement, easy clean-out, locking casters on stand, and 45[degrees] dump chute.

An option to the standard pelletizer that allows the pelletizer to produce micro-pellets as small as 0.010 in, and to continuously adjust up to 3/16-in pellets. This is accomplished by using a master reference ratio drive system that controls the ratio of the cutter speed to the nip roller speed. Pelletizer line speed can be adjusted faster or slower while maintaining constant pellet length. In this case, the drive used on the nip rollers is 1/4 hp, while the drive on the cutter remains 1.5 hp.