Until now, the dimensioning of plastic gear required the measurement of the tooth selectively and manually before, during and after a transmission test. A newly developed in-situ transmission test bench makes it possible to investigate tooth deformation and wear behavior quasi-continuously during the transmission test, thus reducing effort and operator influence. Non-linear behavior can also be better detected.

Gear tooth wear: representation of material removal on the tooth flanks of a gear pairing in accordance with VDI 2736, size 1

Application-Specific in-situ Transmission Testing of Injection Molded Plastic Gears

Zahnräder

Halbzeuge und Zwischenprodukte

Kunststoff-Halbzeuge

Messtechnik

Verschleißprüfgeräte

Werkstoffprüfung

Prüfen von Kunststoffen

Zahnradmessgeräte

Form- / Oberflächenmesstechnik

Inline- / Online-Messsysteme

Qualitätssicherung

Qualitätssicherung Kunststoff

Inline-Messtechnik

Micrometer Accurate Measurement  of Tooth Wear

A multifunctional measuring unit combines rheological characterization with dynamic mechanical analysis. This enables extensive material characterizations to be carried out on a single instrument. Using the example of additive manufacturing of PEEK by fused deposition modeling (FDM), the material characterization of filament, melt, and final component is demonstrated.

Plate-plate configuration (25 mm diameter) for rheological measurement of a polymer melt on the MCR 702 MultiDrive rheometer with a convection oven (CTD 600 MultiDrive Ready) © Anton Paar

From Melt Rheology to the Mechanical Properties of 3D-Printed Components

Werkstoffprüfung, mechanisch

Elastizitätsprüfgeräte

Mechanische Messtechnik

Werkstofftechnische Prüfungen

Zug-und Druckfestigkeitsprüfgeräte

Prüfdatenauswertung

Rheologie

Multifunctional Material Analysis

The design of parts and components made of fiber-reinforced composites needs to take the coefficient of thermal expansion into account because it determines the extent to which a material changes in length when heated or cooled. Neglecting this quality criterion can have far-reaching consequences

Thermomechanical analyzer TMA 402 F3 Hyperion Polymer Edition

The Coefficient of Thermal Expansion Can Help to Ensure Product Quality

Spritzgießen

Kunststoffverarbeitung: Verfahren

Thermische Mess- und Prüfverfahren

A Change of Length Has Consequences

Terahertz and microwave methods offer a wide range of applications for testing of plastic packaging. Already established wall thickness measurements and defect detection are now joined by a wealth of other possible applications that promise process reliability and cost efficiency.

The testing of foamed products is becoming increasingly important in the packaging sector. THz measurement technology can be used to determine cell size as well as cell size distribution and local bulk density of foams

Comparison of Terahertz- and Microwave-Testing

Kunststoffe

Photonik

Optik

Mikrowellenmesstechnik

Elektrische / Magnetische Messtechnik

Industrielle Messtechnik

Contactless Testing of Packaging

Atomic force microscopy can be used to determine various properties of polymer surfaces. However, until now it was still necessary to change the hardware on the probe for different measurement methods.

With the Tosca series, all AFM measurements can be carried out with only one actuator body and thus without hardware exchange

Characterize Plastic Surfaces More Easily with Atomic Force Microscopy

Kunststoff Werkstoffe

Kunststoff

Bauwesen

Baustoffe

Polymethylmethacrylat

Thermoplaste

Measurements without  Hardware Exchange

The interfacial tightness of hybrid polymer-metal parts such as injection-molded connectors represents a decisive quality characteristic. Until now, however, there has been a lack of suitable measurement technology with which to quantify the media tightness of such molded parts. A new method delivers significantly more accurate results than previous test methods.

The DDP method enables more accurate determination of the tightness of polymer-metal hybrids

16:9

Measurement Method for the Exact Leakage Determination of Polymer-Metal Hybrid Parts

Verbundwerkstoffe / Werkstoffverbunde

Stecker

Elektromechanik

Steckverbinder

How Tightly Sealed are Connectors Really?

Susanne Schröder will become editor-in-chief of the magazines Kunststoffe and Kunststoffe international on December 1, 2020. The current editor-in-chief Dr. Karlhorst Klotz will leave the company by mutual agreement.

Susanne Schröder will become editor-in-chief of the magazines Kunststoffe and Kunststoffe international on December 1, 2020. Until now she has been editor-in-chief of the trade journal FORM+Werkzeug

Werkzeuge für Leichtbauwerkstoffe

Präzisionswerkzeuge

Tiefziehwerkzeug

Dienstleistungen

Werkzeug-, Formen- und Modellbau

Werkzeugüberwachung

Toolmanagement

Werkzeugwechselsysteme, Spritzgieß

Kunststoffverarbeitung: Maschinen und Komponenten

Werkzeuge für die Kunststoffverarbeitung

Spritzgießwerkzeuge

Werkzeug- und Formenbau

Modulare Werkzeugsysteme

Absaugungen für Werkzeugmaschinen

Betriebsausrüstung / Betriebsmittel

Absaugvorrichtungen

Fluorkunststoffe

Werkzeugverwaltungssoftware

Biokunststoffe

Presswerkzeuge, Kunststoff

Werkzeugreinigung, Kunststoffe

Standardkunststoffe

Kunststoffverarbeitung

Lohnfertigung

Technische Kunststoffe

Füllstoffe für Kunststoffe

Kunststoffhandel

Handel

Betriebstechnik für Kunststoffverarbeitung (Peripherie)

Kunststofffasern

Verstärkungsstoffe

Kunststoff-Recycling

Kunststoff-Aufbereitung

Hochleistungskunststoffe

Change in the Chief Editorial Office of Kunststoffe

The voltage test of the comparative tracking index is limited to 600 V so far. In many areas the voltages increase, especially for electrical vehicles. Therefore, it is interesting to know what the real limits of isolating materials are. These are considerably higher. To test these, a modified test set-up is necessary.

Up to now, the test of the creep resistance only went up to 600 V. However, many insulation materials reach significantly higher values 

Testing Isolating Materials above 600 V

Elektronik

Automotive

Beyond the Limits of the Comparative Tracking Index

This thesis deals with the frictional heating of tribological polymer systems and their influence on tribological behavior.

Polyetherketon

Simulation

Software

Tribologie

On the Effect of the Heat Balance During Tribological Testing of Plastics

New date for the industry event is June 22th to 25th, 2022.

Safety first: to ensure that guests from all over the world can meet at the Technology Days (the picture shows the 2019 event) as carefree as possible, Arburg has postponed the date

Spritzgießmaschinen

Arburg Technology Days 2022 Will Take Place in June

For the first time a readable digital watermark, imperceptible to the naked eye, has been incorporated into an injection-molded flip cap.

On the flip cap, the digital watermark is not visually perceptible, but can be read like a code by specialized high speed camera

Integration of Digital Watermarks in Complex Injection Molded Packaging Products

Bildverarbeitung

Fertigungsautomation

Laserbearbeitungen

Oberflächentechnik

Barcode-Systeme

Identtechnik

Inspektion, Analyse und Sortierung von Rohmaterial

Kreislaufwirtschaft

Key to Purity of Recycled Resins

Everyone is talking about digitalization and Industry 4.0. In practice, however, implementation is often difficult. The data-driven operation of an injection molding production is often still a dream. Only if the exact actual condition of the machines and peripheral equipment is known, work on optimizing the processes can be done. The Eastern Switzerland University of Applied Sciences describes the challenges that have to be overcome and shows possible solutions based on a self-operated manufacturing cell.

Fully automated manufacturing cell for the production of a floorball at IWK’s technical laboratory in Rapperswil, Switzerland

Part 2 of the Series: Integrated Data Acquisition for the Injection Molding Production

Industrie 4.0 für die Kunststoffverarbeitung

Industrie 4.0

On the Way to the Smart Injection Molding Factory

The article demonstrates the use of digital twins for molds in injection molding through the integration of track-and-trace technologies for data collection.

An RFID reader records whether a mold is ready for the setup process

How Track-and-Trace Technologies Can Support Mold Management

RFID

RFID Teileidentifikation

Digitaler Zwilling

The Digital Mold Twin

Arburg will be showing the hybrid high-performance Hidrive series on its stand no. 21B25 in Hall 2, with an Allrounder 520 H producing 32 pipette tips in around 6 s cycle time.

The hybrid Allrounder 520 H on show at Interplastica is equipped with a 32-cavity mold and produces pipette tips in a cycle time of around 6 s.

Spritzgießmaschinen, allgemein

High-Tech for Medical Technology

From 25 to 28 January, the OOO Engel team presents its booth in Moscow again. The injection molding machine manufacturer and system solution provider headquartered in Austria is making the huge potential of digital solutions tangible by producing technical parts live on a tie-bar-less victory injection molding machine.

Engel victory injection molding machines with tie-bar-less clamping units.

The Benefits of Tie-Bar-Less Technology

Identifying Gas Formation during Injection Molding

Polyplastics has developed a testing method that identifies gas formation during the injection molding process and helps to reduce mold deposits.

Polyplastics has developed a testing method that identifies gas formation during the injection molding process and helps to reduce mold deposits. The company’s Gas Investigation Method in Injection Molding (GIMIM) facilitates continuous molding and improves production efficiency as stated in a press information. 

During the injection molding process, harsh conditions (high temperature, high speed) and deterioration of plastic additives can release high volumes of decomposition gases. Mold deposits, gas burns, and short shots caused by pyrolysis gas can lead to quality problems, including undesirable effects on the dimensions and appearance of products, resulting in a higher defect rate. Maintaining highly efficient production operations is important as manufacturers work to meet challenging applications such as automotive electrification and automation. 

Polyplastics’ proprietary method captures and evaluates the gases formed during molding and identifies the mechanism by which pyrolysis gas forms during injection molding. The innovative proprietary method traps gases according to mold-based methods, uses gas chromatography mass spectrometers (GC/MS) to qualitatively and quantitatively analyze their composition, identifies the gases that are formed, and makes fundamental improvements to the sources of their formation. 

Direct Analyzation of Gases Formed inside the Mold during Filling

This simple system configuration is divided into the three stages of plasticization, metering, and injection, and each unit is fitted with gas traps to seclude the gases that form within each part of the process. GIMIM can reflect the actual circumstances during molding by directly trapping and analyzing the gases formed during molding. 

GIMIM makes it possible to measure high-molecular-weight substances that can cause mold deposits. Since this method directly analyzes gases that are formed inside the mold during filling, the company believes it yields results that are closest to real-world conditions. In further research, Polyplastics plans to examine other problems caused by pyrolysis gas such as short shots and gas burn defects, as well as mold deposits. 

Polyplastics Co., Ltd.  

The new Gas Investigation Method in Injection Molding (GIMIM) makes it possible to measure high-molecular-weight substances that can cause mold deposits

2021-08-13 TN Polyplastics

Technik Trend

kunststoffe-international.com

issue 02/2023

issue 01/2023

issue 09/2022

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