Characteristic defects of extrusioned polymeric profiles and methods of their elimination

Authors

  • Марія Анатоліївна Романченко National Technical University of Ukraine «Kiev Polytechnic Institute» Pobedy avenue 37, Kiev, Ukraine, 03056, Ukraine https://orcid.org/0000-0002-7351-7348
  • Олександр Леонідович Сокольський National Technical University of Ukraine «Kiev Polytechnic Institute» Pobedy avenue 37, Kiev, Ukraine, 03056, Ukraine https://orcid.org/0000-0002-7929-3576
  • Ігор Олегович Мікульонок National Technical University of Ukraine «Kiev Polytechnic Institute» Pobedy avenue 37, Kiev, Ukraine, 03056, Ukraine https://orcid.org/0000-0001-8268-7229
  • Ігор Анатолійович Горбань National Technical University of Ukraine «Kiev Polytechnic Institute» Pobedy avenue 37, Kiev, Ukraine, 03056, Ukraine https://orcid.org/0000-0001-8232-1980

DOI:

https://doi.org/10.15587/1729-4061.2014.33648

Keywords:

extrusion, coextrusion, technology, formation, polyvinylchloride, profiles, defects, calibrator, adhesion, interlayer interaction

Abstract

Products made of polymeric materials are becoming more common. At the same time, requirements for quality, accuracy of shape and sizes of products are increasing. Meeting the demand for domestic plastic products is impossible without improving the design and process parameters of equipment and polymer processing procedures. The aim of the research, described in the paper, is an analysis of the main factors affecting the quality of coextrusion formation of multilayer polymeric products and methods to eliminate defects. Production of pipes and gutters is carried out using coextrusion formation with subsequent calibration. The main defects that may occur in the polymeric profile production are "wave" defect, underfills, streaks, scratches, length distortion of the profile (saber), violation of adhesive interaction of layers and phase distribution boundary. The analysis of specific defects, their features and causes was performed. Most appropriate practical ways to eliminate defects using correction of process and design parameters were proposed. Correction of process parameters includes reducing or increasing the worm rotation rate, varying the worm temperature, temperature at the outlet of the working cylinder, temperature control in the first zones of the working cylinder (in the raw charging zone), increasing or decreasing pressure in the head. Design parameters subject to correction include the channel depth in the dosage area and compression zone length, head channel profile, length of calibration and cooling zones.

Author Biographies

Марія Анатоліївна Романченко, National Technical University of Ukraine «Kiev Polytechnic Institute» Pobedy avenue 37, Kiev, Ukraine, 03056

graduate student

The department of chemical, polymer and silicate engineering

Олександр Леонідович Сокольський, National Technical University of Ukraine «Kiev Polytechnic Institute» Pobedy avenue 37, Kiev, Ukraine, 03056

Associate professor, Candidate of technical science

The department of chemical, polymer and silicate engineering 

Ігор Олегович Мікульонок, National Technical University of Ukraine «Kiev Polytechnic Institute» Pobedy avenue 37, Kiev, Ukraine, 03056

Professor, Doctor of technical sciences, honored Inventor of Ukraine

The department of chemical, polymer and silicate engineering 

Ігор Анатолійович Горбань, National Technical University of Ukraine «Kiev Polytechnic Institute» Pobedy avenue 37, Kiev, Ukraine, 03056

The department of chemical, polymer and silicate engineering 

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Published

2014-12-15

How to Cite

Романченко, М. А., Сокольський, О. Л., Мікульонок, І. О., & Горбань, І. А. (2014). Characteristic defects of extrusioned polymeric profiles and methods of their elimination. Eastern-European Journal of Enterprise Technologies, 6(11(72), 30–34. https://doi.org/10.15587/1729-4061.2014.33648

Issue

Vol. 6 No. 11(72) (2014): Materials Science

Section

Materials Science

License

Copyright (c) 2014 Марія Анатоліївна Романченко, Олександр Леонідович Сокольський, Ігор Олегович Мікульонок, Ігор Анатолійович Горбань

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