The Purging Diaries
Here is where we share our knowledge, experiments, news and success stories.
Changes of Materials Operating at Very Different Temperatures on Injection Molding Machines
One of the most common queries we receive, especially from customers in the Automotive industry, is how to carry out safe changes of materials that have very different processing temperatures on injection molding machines. In this article, we will explore the case of...
Cambios de materiales que trabajan a temperaturas muy diferentes en las máquinas de inyección
Una de las consultas más habituales que recibimos, especialmente por parte de clientes de la industria automotriz, es cómo llevar a cabo cambios de materiales seguros que tienen temperaturas de proceso muy diferentes en las máquinas de inyección. En este artículo,...
Liquid Purging Compound vs Pellets: Which one is best for me?
The decision between using a liquid purging compound or a pelleted one to clean the PET preform system is an important matter to consider in the industry. Both methods have their advantages, so it is crucial to evaluate several factors before making a decision. Pellet...
Compuestos de purga para preformas de PET: ¿líquida o en pellets?
La decisión entre usar una purga líquida o una purga en pellets para limpiar el sistema de preformas de PET es un tema importante para considerar en la industria. Ambos métodos tienen sus ventajas y desventajas, por lo que es crucial evaluar varios factores antes de...
PET Preform Quality Control: The Importance of a Good Purging Compound
PET preform quality control is crucial to ensure products meet market demands. One of the key tools to minimize quality control issues is the use of a good purging compound. In this article, we will explore the importance of using a quality purging compound and how it...
Preformas de PET: la importancia de un buen compuesto de purga
En la industria de las preformas de PET, el control de calidad es fundamental para la creación de productos que cumplan con las exigencias del mercado. Una de las herramientas clave para minimizar los problemas relacionados con el control de calidad es el uso de un...
Why do Colour Streaks Occur?
Color streaking can be divided into two categories. The first type is caused by material degradation, the second one is caused by pigments. Both types of streaks can appear spontaneously, even a long time after a colour change. We are going to refer fundamentally to...
Black Specks Injection Molding: Why Do They Occur?
Black specks in plastic are one of the most stressful defects for injection molding or extrusion technicians, as they may or may not have a pattern of behaviour. We know that these black dots indicate a certain level of degraded material within the system. It is...
What is a Purging Compound?
A purging compound is a product most thermoplastic producers use to clean screws, nozzles, mold, hot runners or die of injection molding machines and extruders. These compounds were developed to reduce machine downtimes and scrap rates during material or colour...
Quick tips to reduce scrap during material changes
Time flies! We just realized, we have spent the last 10 years working with injection molders to reduce scrap during material changes in the most simple way possible. Our statement when approached by production teams has always been: “ We can help you...
Success Stories
Pet Preform Injection Molding Colour Change
Pet Preform Injection Molding Colour Change with EasyPurge Purging Compound Opaque White to Clear Goal: Scrap and cleaning cost reduction Summary: Machine: Husky Hypet 300 Extruder Diameter: 120 mm Mould: 48 x 44.0grs Material: PET Colour: Opaque White 10% T. Oxide ...
Injection Molding Colour Change: PA6 FG 45% Black to PA6 FG 45% White
Injection Molding Colour Change with EasyPurge Purging Compound PA6 FG 45% Black to PA6 FG 45% White Goal: Reduce color change purging cost Summary: Machine: 700T Material: PA6 FG 45% Colour: Black to White Purge: 140 ml Time: 20 mins Industry: Automotive Factory...
OPAQUE WHITE to CLEAR – Color Change and Scrap reduction
Pet Preform Injection Molding Colour Change with EasyPurge Purging Compound OPAQUE White to Clear Goal: Color Change and Scrap reduction Summary: Machine: Husky Extruder Diameter: 110 mm Material: PET Colour: Opaque White to Natural Mould: 72 x 22 grs Factory...
OPAQUE WHITE to CLEAR – Color change time reduction
Pet Preform Plastic Injection Molding Process: Color Change with EasyPurge Purging Compound OPAQUE White to Clear Goal: Color change time reduction Summary: Machine: Netstal 3500-3700 Extruder Diameter: 135 mm Material: PET Colour: Opaque White to Natural Mould: 54 x...
PA to HDPE
Extrusion Blow Molding Material Change with EasyPurge Purging Compound PA to HDPE Material Change Goal: PA to HDPE Material change and Black Specks Removal Summary: Machine: Moretti Extruder Diameter: 100 mm Material: PA to HDPE Colour: Black to Clear Industry:...
POM BLACK to PA CLEAR
Injection Molding: Material Change with EasyPurge Purging Compound Injection Molding Material Change: POM BLACK → PA CLEAR Goal: Black Specks Removal Summary: Machine: 400T Material: POM Black to PA Clear Easypurge Purging compound consumed: 6 Sachets (120 Grs)...
HDPE BLACK to HDPE NATURAL
Extrusion Blow Molding HDPE: Colour Change with EasyPurge Purging Compound Blow Molding: HDPE BLACK TO HDPE NATURAL Goal: Downtime reduction Summary: Machine: Mateu & Sole (Spain) Extruder Diameter: 120mm Material: HDPE Colour: Black to natural Blow Molding HDPE:...