Nowhere are the demands imposed on materials higher than in the area of medical technology. That is understandable because, after all, what is ultimately at stake here is the patient’s health. But any materials manufacturers seeking to use hot runner technology to process polymers in compliance with strict directives and differentiated legal regulations also need the expertise possessed by the hot runner manufacturer’s application engineers.

Günther has recently installed two new injection-molding machines for customer trials in its technical center.

16:9

Testing the Processing Limits of Modified POM Copolymer

Spritzgießen

Kunststoffverarbeitung: Verfahren

Polyoxymethylen

Kunststoff Werkstoffe

Thermoplaste

Normalien und Heißkanaltechnik

Kunststoffverarbeitung: Maschinen und Komponenten

Komponenten für die Kunststoffverarbeitung

Heißkanalsysteme

Medizintechnik

Looking over the Application  Engineer’s Shoulder

Family molds belong to the state-of-the-art in injection molding – at least when wall thicknesses and volumes of individual components vary considerably. Using a trial mold soon ready for series production, Synventive demonstrates that – though demanding – optimal process control can be achieved using the right technology. The filling of each mold cavity is controlled individually and in real time. The Kunststoffe editorial team were among the first guests at the new Tech Center.

View into the mold space of the Engel Duo 2700 at the Tech Center. In the background, a 6-axis robot with 180 kg load-bearing capacity which removes the components.

Single-Shot Injection Molding of Heterogeneous Components

Schröder, Susanne

Spritzgießwerkzeuge

Werkzeuge für die Kunststoffverarbeitung

Leading-Edge Process Control

The new “Heat-Inject” product from Incoe International Europe stands out in that it uses the hot runner system as a carrier platform, but instead of melt, it brings heat into the cavity.

The heat pulse from heat-inject ensures good surface quality where a weld line may otherwise be visible due to the part geometry and gating.

Targeted Heat Pulses in the Cavity

With immediate effect, a new generation of compact linear servo motors is available for Ewikon‘s electric needle valve systems.

Ewikon has now fitted the electric needle valve system with a new generation of compact linear servo motors.

Messe K-Kunststoffmesse

kunststoffe-international.com

kunststoffe.de

Servo Motors for Needle Valve Technology

Bio-Fed and Günther Heisskanaltechnik have performed various trials, which show that even supposedly sensitive bioplastics can be reliably processed in hot runner molds.

Fig. 4. Interchangeable inserts for various test samples can be installed in the two-cavity trial mold.

Bio-Fed and Günther Heisskanaltechnik have performed trials, which show that even supposedly sensitive bioplastics can be reliably processed in hot runner molds.

While Processing Trials Proved Highly Successful, an Intuitive Feeling Is Required

Biokunststoffe

Processing Bioplastics  in Hot Runners

Production systems for large molded parts can be flexibly and economically reconfigured or expanded using hot runner adapter plates.

Melt transfer from two on the side injection units of an Engel v-duo 2300 RTM into the middle of the hot runner intermediate plate mounted on the sliding table. 

Economical Solution for the Production of Thermoplastic Large-Structure Components

Co-Injektion (Barriere-/Sandwich-Spritzgießen)

Kunststoff-Rezyklat

Flexible Injection Solutions  with Adapter Plates

We look behind the cavity walls and along the data cable at what hot runner technology now offers in terms of mechanical, electronic and digital expertise.

The smart Control monitoring unit permits integrated monitoring of the injection molding production cell, including the mold, hot runner system and all ancillary components. The “Luer connector” application case was on show at K 2022.

State-of-the-Art Injection Molding Solutions at K 2022: Hot Runner Technology

Doriat, Clemens, Dr.

Mikrospritzgießen

Digitale Transformation

Wirtschaft

Innovationen und neue Technologie

Mess-, Steuer- und Regelgeräte

Qualitätssicherung

Qualitätssicherung Kunststoff

Temperaturregler

Messtechnik

Sensoren / Messwertaufnehmer

Additive Fertigung

Everything under Control

Witosa is replacing titanium with 3D-printed steel elements in its hot runner systems. Its long-term goal is carbon neutrality.

Reducing the CCF through Titanium-Free Mold Constructions

Hot Runner, Carbon Neutral

Injection molding: Family molds can produce a wide variety of parts in a single shot. Where the challenges lie in process control.

Three at once: a six-axis robot removes the final injection-molded assembly, consisting of door trim, map pocket and sill.

One Tool, One Shot, Three Parts

Oerlikon HRSflow hot runner systems combine cost-efficient production of automotive parts with a precise process control.

Gate Insert for Difficult Process Conditions

Männer: The first steps towards automatically designing a flow-optimized flow-channel geometry by additive manufacturing of the hot runner manifold block.

Six-cavity mold with naturally balanced three-in-a-row layout instead of the conventional double-Y layout.

Three-Dimensional Melt Flow System in the Hot Runner Manifold Block

A low-build-height mini-valve-gate system allows the advantages of micro injection molding to be combined with those of valve gate technology.

Thanks to its low overall height, the new valve-gate system can also be accommodated in the confined space of a micro injection molding machine.

Medizinprodukte

The Great Art of Small Parts

A Polish pharmaceutical company is developing inhalation therapy for the treatment of lung disease and the appropriate drug delivery drug. The inhaler has a complex interior and consists of 14 components. In order to be able to produce these with the required precision, Celon Pharma has formed a partnership with the mold making company Glittenberg and its hot runner sister Witosa.

For its complex functional mechanism, the inhaler requires 14 components

Glittenberg Supplies Tools for Vital Medical Devices to Celon Pharma

Plastic in the Service of Medicine

Pipette tips feature a challenging wall thickness/length ratio, an inner geometry that is key for analysis results, and a tip opening just a few tenths of a millimeter wide. They have been in extremely high demand during the coronavirus pandemic, which is why the mold construction and hot runner specialist Männer has developed a mold with an innovative cluster concept.

At the Männer test center in Bahlingen, Germany: an injection mold for manufacturing pipette tips, shown here in operation. Automation of the system is currently being set up

Pipette Tips: Männer Presents a Mold with Replaceable Clusters

Maintenance During (Nearly)  Uninterrupted Production

A solution, which is unique in Europe, significantly increases productivity and comprises the production from a 12+12 stack mold with fully automated in-mold labeling and removal with visual 100 % inspection of the parts.

Before relocation to the production site, extensive functional tests and the final trial were carried out at the roth technical center

Fully Automated Production Line with Stack Mold and In-Mold Labeling

Award-Winning Packaging Solution Increases Productivity

The ongoing miniaturization of medical applications is yielding parts of ever smaller geometries and weights that are characterized by critical tolerances and high complexity. Generally, after molding, most parts are routed to assembly lines, where they are assembled into modules. This multiplies the risk of potential defects in the end product. Kebo has developed a new needle valve system called MultiValve to specifically address the needs of medical customers.

Kebo has developed a new needle valve system called MultiValve to specifically address the needs of medical customers.

Kebo implemented the new system by deploying its tried-and-true cluster concept. This enabled the development team to utilize the space required by the existing open, compact cluster arrangement for the needle valve. The highly compact cavity spacing maximizes the number of parts produced per mold surface area. Other advantages of the MultiValve system are high gate quality, ease of maintenance, and long service life. The maximum configuration of eight cavities per cluster will be on show at Fakuma – clusters of four and six cavities are also possible, with the exact number depending on the part geometry and the gate position. Another unique feature is the option to shut off individual cavities easily and safely.

All-electric solutions are preferred by the medical market, especially for cleanrooms. MultiValve therefore uses an electric platen to actuate the needle shut-off nozzles. Aside from cleanroom capability, this provides benefits in terms of high precision and repeatability, as well as low wear and high process reliability. What is more, the needle speed can be individually controlled. Alternatively, the drive can be actuated pneumatically.

KEBO AG Formenbau  

https://www.kebo.com

Kebo will be showing its MultiValve valve gate system in its maximum configuration of eight cavities in Friedrichshafen

2021-09-27_Werkzeugtechnik_Kebo

Messe Fakuma

Reinraumsysteme / -technik

issue 04/2023

issue 03/2023

issue 02/2023

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