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Screen changers with no motor / hydraulic / pneumatic parts
Lifecycle

Simpler screen changers for continuous production

October 10, 2021 /Posted byadministrator

Whenever designing and manufacturing plastic extrusion systems intended for the continuous production of high-quality applications, screen changer is an essential component. This is the reason why screen changers with no motor or hydraulic or pneumatic components represent the ultimate solution for continuous plastic extrusion systems intended for thermoplastic film, medical and food applications included.

(Questo articolo è disponibile in italiano / This post is available in italian language)

KEEP PLASTIC CONTAMINATION LOW

In most cases, virgin plastic materials are used for the production of top-quality and flaw-free applications (e.g., BOPP and BOPET thermoplastic film). Certain applications and materials require virgin plastic materials to be mixed with recycled low-contamination ones – for cost efficiency and profitability reasons as well as to limit new plastic production and prefer recycled plastic materials.

In this kind of extrusion systems, end extruded plastic contamination rate must be kept under strict control, i.e., it is required to comply with very strict limits. Therefore, it is strongly advisable to equip plastic extrusion systems with a continuous screen changer – besides being highly performing, it is cost effective and requires minimized maintenance.

THE BEST SCREEN CHANGER

What characteristics should a continuous screen changer have to comply with the above-mentioned limits?

In a continuous screen changer, the presence of motors and hydraulic and pneumatic components represents a critical factor, which is advisable to avoid. Due to component continuous movement, and tear and wear, besides joint friction and the continuous pressure exercised on components by fluids, motors and hydraulic and pneumatic components are quickly subject to damages in case of intensive and continuous use.

Therefore, such a screen changer requires the introduction of control stages and maintenance interventions to be scheduled, thus resulting in operation interruptions, and compromising production efficiency. Moreover, setting up and maintaining screen changers equipped with motors, hydraulic and pneumatic components is expensive.

In other words, screen changers with motors, hydraulic and pneumatic components are not the ideal solution for this kind of applications.

SCREEN CHANGERS WITH SIMPLER MECHANISMS

On the contrary, screen changers with simpler mechanisms are the best choice for continuous plastic extrusion systems intended for the production of high-quality applications. A continuous self-cleaning screen changer, with no hydraulic or pneumatic systems or motors, will soon prove to affect the relevant purchase budget less and will soon almost zero any maintenance costs, while keeping on offering unrivalled quality.

DESIGNING CONTINUOUS SCREEN CHANGERS

Designing a screen changer intended for continuous plastic extrusion systems, requiring minimized maintenance interventions, and offering uninterrupted operation, is highly challenging. It requires notable designing capacities and expertise – the simplest things are the hardest to make.

Current AP screen changers are the result of Cofit over-50-year experience in the field. Cofit AP series has been specifically designed to filter continuous plastic extrusion systems at lower costs. In particular, AP series screen changers are suitable for the production of BOPP and BOPET – as well as PE, PP, ABS, PET, Nylon, PA, PS, etc. – thermoplastic film as well as cast film, blown film, filaments, nonwoven, wire & cable, pipes, technical item and so on.

AP SERIES – HOW TO WORK BETTER WITH NO MOTORS, OR HYDRAULIC AND PNEUMATIC COMPONENTS

Cofit AP screen changers have been designed and manufactured to work with no motors, or hydraulic or pneumatic components. In this way, operation interruptions – due to maintenance or replacement interventions – are minimized. Any AP screen changer is virtually indestructible and elongates the service life of continuous plastic film extrusion systems.

In AP screen changers, sturdiness is combined with outstanding filtration capacity: AP screen changers can operate at over-500–bar pressure and offer filtering levels exceeding 10 microns. Have a look at AP technical data sheet.

MANUAL, CONTINUOUS AND SELF-CLEANING SCREEN CHANGERS – COFIT AP SERIES

Cofit AP series of manual, continuous and self-cleaning screen changers offers remarkable filtration capacity, suitable for film production as well as food and medical applications. The AP series by Cofit can be used with most of thermoplastic polymers – in particular, BOPP and BOPET.

All AP continuous screen changers require minimized maintenance interventions and extremely low investments.

Have a look at AP technical data sheet

Cofit deals with research, designing, engineering, manufacturing, and distribution of continuous screen changers, either automatic or manual, intended for any sector and process material, in particular BOPP and BOPET film. Contact us to see how a continuous screen changer can optimize your plastic extrusion process.

 

Tags: AP screen changer, Blown film extrusion, Cast film extrusion, Cofit, Continuous screen changer, Fiber extrusion, Filaments extrusion, Film extrusion, Manual screen changer, Nonwoven extrusion, Plastic extrusion systems, Screen changer, Screen filter, Self-cleaning screen changer, Spunbond extrusion
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