Criar Filme Óptico Eficaz
É fundamental que os filmes usados em aplicações ópticas forneçam clareza superior. Garantir que esses filmes forneçam as qualidades estéticas e de proteção necessárias não é uma tarefa fácil - mas com o uso da extrusão correta equipamento, torna-se muito mais fácil produzir filmes ópticos altamente eficazes.
The Foundation: EDI® Ultraflex™ Extrusion Die
The key objective of a flat die system is to uniformly distribute the melt stream to a specified width and at a uniform velocity. Because of this, we put a great deal of emphasis on the front end of our order process, ensuring our die design meets each customer's specific processing parameters. This includes going through the various die options, collecting process details, and using proprietary flow simulation software to convert rheology data into a streamlined manifold.
Contour® Die with Multiflow™ Manifold
US Patent 7,056,112
Our patented Contour® die provides processors with a unique solution specifically designed for processing thermally sensitive materials and frequent rate changes. This technology offers dimensional and process stability, while delivering uniform film properties and good purging characteristics, plus avoiding gels and degradation.
The die is designed with a non-linear preland and manifold interface, which greatly reduces (or eliminates) "M" and "W" flow patterns. The integrated diminishing volume Multiflow™ manifold also improves layer uniformity in coextrusion applications, helping to significantly reduce scrapped materials by achieving acceptable product levels quickly.
EDI® Lip Adjustment Systems
Nordson offers a variety of lip adjustment systems, from manual systems that enable direct coarse tuning for each set-up, to automatic systems that deliver fine adjustments in reduced time.
Where It Started: Manual Lip Adjustments
Manual lip adjustments enable operators to adjust the die lip by using hand-operated tools to tighten or loosen the bolts. This tried-and-true method has been used in the field for decades whenever coarse adjustments to the die’s lip gap are required.
Push-Only Lip Adjustments
A single thread allows for large movement per revolution (around 1mm/rev).
Differential Push-Only Lip Adjustments
The two-thread system enables finer movement per revolution (around 0.2mm/rev).
Differential Push-Pull Lip Adjustments
The two-thread system enables finer movement per revolution (around 0.2mm/rev) and the pull feature assists with lip opening in lower-pressure applications.
Stepping It Up: Autoflex™ VI-RE Systems
US Patent 10,518,459
The combination of the Autoflex™ VI-RE system and a computerized gauge monitor typically yields closed-loop control that reduces gauge variation to about half of the minimum achievable with manual systems.
The system:
- Provides a 43% increase in the stroke of the lip adjusting system, without adding to response time, enabling the system to correct a wider range of process variations, often without the need of manual intervention
- May be operated in convective or forced air cooling conditions
- Reduces downtime with a design that provides easy access to wearable parts during routine maintenance and cleaning
- Includes heater wiring routed directly into a junction box using a quick disconnect plug
- Features module sets, containing three or four adjustments each, allowing for easy access to wearable parts in a specific area of the system
- Is retrofittable to existing dies
The Future is Now: Prodigi™ Motorized Lip Actuator System
Patent Pending
Instead of using thermal bolts to control the lip adjustment, Prodigi™ relies on a series of motorized actuators, connected to the adjustment threads. These motorized actuators smoothly translate motor rotation into precise linear movement to locally open and close the lip. This is accomplished away from the hot die, at a user interface.
With this system, processors can:
- Increase their set-up speed by saving a gauge profile configuration, which may be simply relaunched for the next production cycle
- Gain additional stroke thanks to the motorized actuators, which can traverse the entire useful flexible lip travel range without the need for any manual intervention
- Achieve optimal repeatability, using the Prodigi™ system’s computer-based programming to save the exact location of each bolt during a production run
- Boost energy savings since the actuators operate at a significantly lower temperature than conventional auto bolt translator blocks and because the system uses little to no additional power after it achieves steady state operation
- Improve team safety by removing operators and technicians from the hot zone near the die surfaces and melt stream components
EDI® Coextrusion Technology
Coextrusion technology enables processors to further improve their end product by combining materials to add strength, durability, and protective properties. Our feedblocks combine polymers in a parallel path manner, achieving optimal layer ratio stability throughout a structure. Flexibility in the design means entrance locations can be customized, based on your line design and layout.
Ultraflow™ I Feedblock
Our fixed geometry feedblock is an industry-proven design, enhanced by collaboration of coextrusion expertise between our world-class design engineers and industry partners.
This feedblock offers processors:
- Controllable linear valves, which allow for highly precise layer ratio changes
- Exchangeable flow inserts and plugs, as well as flush inserts, which are used to change layer sequences
- A split body design that minimizes physical space requirements and is easier to clean
Ultraflow™ Streamlined Feedblock
Our streamlined feedblocksare specifically designed for optical applications, offering processors unsurpassed coextrusion uniformity.
This feedblock offers the following options to processors:
- Selector plates to pre-arrange layer sequences
- Exchangeable distribution bars to optimize layer uniformity
- Customizable entrance locations when combined with an EDI® distribution block
Other Optional Features & Equipment
Our goal is to ensure you have the tools needed to be successful. The following features are optional but certainly worth considering when trying to increase your operation's profitable output.
Deckling
Deckles are designed to vary the product width by blocking off portions of the die slot from both ends of the die.
Fixed Internal Deckling
Internal deckle systems include fixed deckle blades.
Die Insulation
Adding insulation can quickly benefit an organization. The insulation, made from inorganic materials, is sandwiched between stainless steel panels to optimize die temperature control, isolate the die from external drafts, and increase team safety.
Ultracart™ System
Enhance workplace safety with the added mobility of a cart, which allows an entire die to be wheeled from the processing line to a maintenance area. The Ultracart™ system streamlines the cleaning process by rotating the die halves for easy access to the flow surfaces.Additional Support Available from Nordson
Extrusion and fluid coating die systems are not only a strategic investment, but also a critical aspect in the overall success of your business. Nordson employs a team of field service technicians to offer processors and converters both on-site and remote technical support. The technical service team offers seven days a week scheduled or emergency call service and is based throughout the world to provide regional service and support.
Their services include:
Installation and Start-up Assistance
Our technicians are available to assist with startup, commissioning, and process optimization.
On-site Inspections and Repairs
Our team provides on-site inspections, repairs, and replacement of components and parts.
Operation and Maintenance Training
Profit from our experience and know-how in plastics processing by having our professionals train your staff. A team of Nordson experts tailors each program to fit your requirements. Training courses can be held at one of our technology centers or at your location.