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Injection Molding of Transparent Plastic Parts
Top Quality for the Perfect View
Transparent plastics offer great potential for various applications. The design freedom offered by the injection molding process and energy-efficient processing combine with the advantages of lightweight construction. This is especially important in the automotive industry. Optical and transparent plastic injection molding parts place high demands on processing.
Special screw geometries, screw metals, and coatings are adapted for different materials, for example PMMA, PC, or COC. The right geometry ensures gentle plasticizing.
ENGEL's innovative injection molding processes guarantee high precision and flawless parts. A patented multi-layer process supports you in the production of optical and transparent plastic parts such as lenses of high quality and perfect transparency.
ENGEL is your reliable partner. Whether you are producing the smallest lenses for smartphone cameras, thick-walled automotive lenses, or PMMA light guides. With well-defined solutions and pioneering injection molding processes, we create high surface quality while adhering to the lowest tolerances.
Our optimelt sequence software solution is an important addition to our portfolio. It allows an extension of the machine sequence and opens new plasticizing possibilities. The melt is pressurized, which improves the melt quality, thus avoiding micro-defects on the transparent plastic component.
Special screw geometries, screw metals, and coatings are adapted for different materials, for example PMMA, PC, or COC. The right geometry ensures gentle plasticizing.
ENGEL's innovative injection molding processes guarantee high precision and flawless parts. A patented multi-layer process supports you in the production of optical and transparent plastic parts such as lenses of high quality and perfect transparency.
ENGEL is your reliable partner. Whether you are producing the smallest lenses for smartphone cameras, thick-walled automotive lenses, or PMMA light guides. With well-defined solutions and pioneering injection molding processes, we create high surface quality while adhering to the lowest tolerances.
Our optimelt sequence software solution is an important addition to our portfolio. It allows an extension of the machine sequence and opens new plasticizing possibilities. The melt is pressurized, which improves the melt quality, thus avoiding micro-defects on the transparent plastic component.
 "Clemens Kastner | ENGEL")
Take advantage of our experience and knowledge in this area to make your products even better. We will be happy to advise you.
The optimelt sequence software reduces micro-defects on optical and transparent plastic parts.
Injection Molding Processes for Optical and Transparent Parts: An Overview
| Process | Product name | Industry | Application | Method |
|---|---|---|---|---|
| Processing of transparent materials | optimelt | Electronics Automobile & Mobility | Lenses and light guides, Glazing | Production of transparent components for optical applications |
| Silicone processing / liquid injection molding | LSR/LIM | Electronics Automobile & Mobility | Lenses and light guides | Processing of materials that only crosslink in the mold |
| Injection compression molding | coinmelt | Automobile & Mobility | Thin-walled glazing (combination with multi-component injection molding possible), Head-up displays, Headlight covers | Production of precise components with low residual stresses with injection compression molding |
To further optimize optical component qualities of PMMA light guides, for example, we enable close interaction between the machine and special peripherals.
Product range:
Dedusting devices
Starve feeding solutions for the plasticizing unit with integrated nitrogen flooding
High-resolution camera systems for inline quality control
This injection molding process enables gentle plasticizing and homogenizing of transparent plastic melts.
The self-cleaning feature of the plasticizing unit reduces material degradation.
The injection molding process and the machine technology are fine-tuned to the transparent plastic parts produced.
Peripherals are directly integrated into your production cell.
Better melt quality
Less component contamination
Micro-silicone parts, baby bottle nipples or large-volume insulators are just a few examples of the use of LIM (liquid injection molding). The technology for processing LSR is the first choice especially for optical components that are exposed to high thermal loads, as in LED headlights, for example. This allows you to produce parts from liquid silicone in a single step without secondary operations and waste.
Fully automatic 24/7 silicone processing in injection molding.
LIM injection units with screw conveyor or injection plunger.
Production assistance through various metering pumps integrated into the ENGEL control unit.
Depending on the application, hydraulic or all-electric, horizontal or vertical injection molding machines.
Precise manufacturing
Few burr defects
Rework- and waste-free products
 "Lenses for LED Headlights with LIM")
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Precise surfaces for particularly high demands: With the ENGEL coinmelt injection compression process, you can achieve perfect quality for your transparent plastic parts. From automotive glazing and optical lenses to molding the finest, micro-scaled structures.
You need less injection pressure to produce transparent parts and so save energy.
The production of precise components with the same wall thickness is possible.
Lower stresses in the component and therefore less warpage.
Uniform impression of structures
More even material distribution for greater shape accuracy
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