Title: Understanding and Optimizing Weld Lines in Thermoplastic Molding
Description: Weld lines (also called knit lines) are surface defects that form during mold filling when flow fronts come together at sufficiently small interface angles. This typically happens where flow fronts rejoin after holes or where flow fronts merge from two or more gates. In addition being unsightly, weld lines can also be weaker than the surrounding area.
Title: Gate design for a high-quality surface finish
Description: Mold design
Title: Laser transmission welding of Covestro thermoplastics
Title: Self-Tapping screws for thermoplastics
Description: Mechanical Fasteners
Title: The insertion of connecting elements using ultrasound
Title: Laser marking of Covestro thermoplastics
Description: Laser Marking
Title: Purging compounds for use when molding thermoplastics
Description: Cleaning of Plastizising Unit
Title: Injection Molding of High-Quality Molded Parts-Drying
Title: Determining the Dryness of Makrolon by the TVI Test
Title: Optimized Mold Temperature Control
Description: Processing Data
Title: Process Variables as Production Cost Factors in the Injection moulding of Thermoplastics: Melt, Mold and Demolding Temperature, Cycle Time, p-v-J Diagrams
Description: Process Optimization
Title: Calculating the mold-filling process for thin-walled injection moldings
Description: Thin Wall Molding
Title: Shrinkage and deformation of glass fiber reinforced thermoplasticsmay be calculated
Title: Enhancing Impact Resistance and Toughness in Molded Medical Parts
Description: Medical Parts
Title: Understanding Flow Hesitation in Molded Medical Parts
Description: Molded parts can be difficult to fill for a variety of reasons. Some, such as when the walls are too thin or the flow length too long, are obvious. Non-fill due to inadequate venting or poor processing is less obvious but still readily understandable.
Title: Photoelastic Stress Analysis of Polycarbonate Medical Parts
Title: Overmolding with Polycarbonate and Polycarbonate Blends
Title: Addressing Molded-In Stresses and Part Durability
Description: Part property
Title: Balanced Filling in Thermoplastic Medical Molding
Title: Design with Makrolon® Thermally Conductive Polymers
Description: In-mold electronics integration
Title: Marking products made of technical thermoplastics
Description: Marking of products
Title: Materials and packaging solutions for energy storage systemsused in electromobility
Description: Materials and packaging solutions
Title: Environmental stress cracking - bend strip test
Description: Stress cracking
Title: Makrolon® The chemical resistance
Description: chemical resistance
Title: Makrolon® - Stress crack test - Makrolon® moldings
Description: Makrolon® moldings
Title: Accommodating Molding Shrinkage in Polycarbonate Materials
Description: This article addresses the factors that influence molding shrinkage and then provides tips to better predict shrinkage.
Description: If molten plastic behaved like a simple fluid, there would be little need to worry about balanced filling during molding. In reality, molten plastics are complex, viscous, and highly compressible fluids.
Description: Impact resistance and toughness are obvious requirements for applications such as sports equipment, protective eyewear, and portable electronics such as cell phones and game controllers. Increasing numbers of medical devices require similar performance.
Title: Gate Design for Polycarbonate Medical Parts
Description: Most part designers consider gate design to fall solely under the responsibility of the mold shop, and are therefore uninterested in gate design. This is short sighted. Poor gate design can reduce part performance and create cosmetics defects.
Title: Is DirectCoating or DirectSkinning Right for Your Device?
Description: Following injection-molding, it is fairly common for components for plastic housings to be subjected to secondary operations such as painting, coating, or being bonded to a foam. Recently, DirectCoating and DirectSkining (DC/DS) has proven to be effective at producing premium quality surfaces or reducing manufacturing steps thanks to combining multi-operations into an efficient single step within the mold.
Description: For nearly 50, years, Makrolon® polycarbonate has been chosen for medical applications because of its excellent combination of properties including transparency, outstanding toughness, dimensional stability, moldability, low shrink rate, sterilizability, and compatibility with many adhesives and welding techniques.
Title: Stress Relaxation: How long will the connection stay tight?
Description: A plastic supporting a fixed load can stretch and deform, a condition known as creep. Alternatively, a plastic under a fixed deformation will see resistance to that deformation diminish over time. This is due to stress relaxation, which is the topic of this article.
Title: Validating the Molding Process – Material Variability
Description: The validation of a molding process attempts to methodically address the primary installation, operational and processing factors affecting part quality and consistency. The goal is to establish a process that consistently produces parts in the middle of the dimensional tolerance range, thereby minimizing rejects and other quality issues.
Title: Radiation Sterilization of Custom Colored Medical Resins
Description: To help designers achieve personalized (visual) aesthetics while retaining functionality of their medical devices, Makrolon® polycarbonate medical-grade resins are available in a wide variety of clear tints or opaque colors.
Title: Shaping LED diffuser performance with polycarbonate materials
Description: Light diffusion polycarbonate offers a method to eliminate harsh LED hotspots while maintaining high light transmission and eliminating secondary operations.
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