Screws

This screw has a specific design, suitable for PE and PP. The concept of “transfer” is a second thread which starts in the compression zone and divides the melted and solid material. This allows a better control of the melting point of the material and of the temperature of the mass. Screw with high plasticizing capacity, with a better control of the melting point of the material. This screw is designed and produced especially for polyolefin, but it has good results also processing ABS or polyamides.

Advantages:

  1. Excellent mixing of the melted mass
  2. Better esthetic
  3. Waste reduction
  4. High quality products, also with regrind materials
  5. Better dispersion of masterbach
  6. Possible reduction of percentage of masterbach
  7. Possible reduction of the cycle time, due to back pressure reduction or increasing of speed rotation
  8. Anti-Corrosion bimetallic screw
  9. Regeneration of screw and barrel by inserting new bimetallic sleeve can be done

Mixing Screw

The Mixing Screw is a low shear plastics mixing screw that provides the processor with outstanding color mixing. In addition, many of the processors using have experienced improved production rates, both in recovery rate and throughput.
Although the design of the screw and mixer are modified somewhat for different resins, it has successfully processed commodity resins as well as engineering grade resins.

  1. Improved production rates by more than 25%
  2. Reduced part reject rates from more than 5% to less than 1%
  3. Reduced the amount of color concentrate required to achieve optimum color mix from 4% to 3%

Types of Screw

Maplan

We Elegant Mark are Manufacturers, Exporters & Leading Suppliers of Maplan Loacated in Mumbai, India. Designed for blown film, has developed screw technology that allows processors to boost levels when using recycled LDPE.

Homogenizer Screws

Xaloy's X Series Homogenizer screws target shear sensitive resins containing special additive packages.

Variable Clearance Barrier Screws

Variable Clearance barrier screws from Black Clawson are engineered for the low shear processing. It can enable you to cut molding cycles and improve part quality with lower melt temperature, faster screw recovery and improved dispersion of color, additives and fillers. The Barrier Screw combines the advantages of the mixer with the plastic melting efficiency of the barrier screw design. Its “solids and melt” channels provide the effective melting of all resins, especially the “hard-to-melt” crystalline resins. The material is then conveyed through the mixer to produce a high quality, isothermal melt. The Barrier may be the answer for processing difficult materials, whether using an injection molding screw or blow molding screw, or extrusion screw.

Farrel Corp

Farrel Corp.'s continuous mixing element design is especially geared for handling glass fiber reinforcement.

Westland Corp

Eagle Mixing Section for Westland Corp. is engineered to process engineering resins.

Energy Transfer Screw

Energy transfer screw from Glycon keeps pellets mixing with fresh melt, conducting heat from polymer melt and eliminating the need for downstream cooling.

Spiral R Screw

Spiral R Screw line for targets injection molding.combines the simplicity and economy of a conventional three-zone screw with the productivity and quality benefits of optimum material feeding, melting and metering. General-purpose injection screws leave hard-to-get molding profit on the table.

Spirex Pulsar Line Screw

Spirex Pulsar line offers low shear, chaotic and dispersive / distributive mixing designs for injection molding and extrusion. Amorphous and crystalline resins that require superior distribution of additive materials. Direct gas injection foam processes that need uniform bubble size and distribution. Injection applications that demand outstanding melt homogenization with minimal shear to improve part clarity and surface finish. Long glass fiber applications for maximum fiber length retention.

Barrier Screw

Cincinnati Milacron's Melstar combines barrier screw and low shear mixing head.

T Melt Screw

T Melt screw from W J Inc. is engineered for shear sensitive materials and dispersions of color concentrates in injection molding application.