News & Press Releases

SALINE, Mich., May 2, 2016 – R&B Plastics Machinery LLC, a leading manufacturer of blow molding machinery, single-screw plastic extruders, and extruder process screws, and a machinery [...]

SALINE, Mich., March 9, 2015 – R&B Plastics Machinery LLC, a leading manufacturer of blow molding machinery, single-screw plastic extruders and extruder process screws, has announced the [...]

SALINE, Mich., February 3, 2015 – R&B Plastics Machinery LLC, a leading manufacturer of blow molding machinery, single-screw plastic extruders and extruder process screws, has announced the [...]

There are several extrusion applications where vented extruders are used. The main purpose of a vent extruder is for devolitizing the polymer of any volatiles, air, and moisture. There are two [...]

For several months now I have written articles which are bits of advice that I hope can be used to improve a process issue, but this month I want to pass on an experience that happened to me [...]

The most common base material that extrusion, blow molding and injection screws are manufactured out of is 4140 HT Steel at a 28-32 Rc condition. This grade of 4140 has a yield strength of 95-100 [...]

“First you must feed the polymer Consistently” Material Handling The material handling of the feedstock is a very critical part of the extrusion process. If the feedstock is not introduced to the [...]

Many people don’t realize the importance of making sure that the screw flight diameter clearance has a significant effect on the performance of their screws. There are some companies that do pull [...]

SALINE, Mich., October 29, 2014 – R&B Plastics Machinery, LLC, a leading engineering and manufacturing supplier of blow molding machines, single-screw extruders, and rebuild and upgrade [...]

There are basically three Coefficients of Friction (Figure 1) that take place in the feed section of the screw, (1) between the barrel and the pellet, (2) between pellet to pellet, and (3) [...]