Our Polycarbonate PC Injection Molding Services

Elevate your high-performance production with Yigu Technology’s premium Polycarbonat (PC) Injektionsformdienste—where clarity meets durability. Leveraging our injection molding expertise, advanced machinery, and custom tooling, we deliver precision-molded PC parts that excel in impact resistance, Wärmetoleranz, and transparency—perfect for automotive, Unterhaltungselektronik, Medizinprodukte, and optical applications demanding uncompromising quality.​

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Was ist Polycarbonat (PC) Injektionsformung?

Polycarbonat (PC) is a high-performance thermoplastic polymer renowned for its exceptional balance of strength, Klarheit, und Wärmewiderstand. Derived from bisphenol A (BPA) and phosgene (or BPA-free alternatives), PC’s unique molecular structure (aromatic carbonate links) gives it properties that outperform most other transparent plastics. Injektionsformung is a manufacturing process that melts PC pellets, injiziert das geschmolzene Material in einen benutzerdefinierten Schimmelpilzhöhle, cools it to solidify, und schlägt den fertigen Teil aus. Zusammen, PC -Injektionsformung produces robust, transparent (or opaque) components that thrive in demanding environments—from shatterproof eyeglass lenses to heat-resistant automotive headlights.​

Schlüsseldefinitionen & Core Concepts​

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Material Properties of PC​

PC’s unique properties make it the top choice for applications requiring both strength and clarity:​

• Resistenz mit hoher Wirkung: Notched Izod impact strength of 60–80 kJ/m²—20x stronger than glass, 10x stronger than acrylic, and shatterproof (even when struck hard).​

• Clarity & Transparenz: 90% leichte Durchlässigkeit (vs. acrylic’s 92%—negligible difference) with low haze (≤ 1%), making it ideal for optical applications.​

• Wärmewiderstand: Continuous use temperature (CUT) of 120–140°C; can withstand short-term exposure to 180°C (Z.B., automotive engine bay heat or medical sterilization).​

• Dimensionsstabilität: Niedriger Koeffizient der thermischen Expansion (CTE: 6.7–7.0 × 10⁻⁵/°C)—retains shape even when exposed to temperature fluctuations (critical for precision parts like optical lenses).​

Chemischer Widerstand: Öle resistent, Fetten, und die meisten Haushaltschemikalien (except strong acids/bases like sulfuric acid or ammonia).

Unsere Fähigkeiten: Delivering High-Performance PC Injection Molding

Bei Yigu Technology, we specialize in PC injection molding—our capabilities are tailored to handle PC’s unique processing challenges (hoher Schmelzenpunkt, Feuchtigkeitsempfindlichkeit, viscosity) and deliver parts that meet the strictest industry standards (Z.B., FDA für Medizinprodukte, ISO 10366 for optical components).​

Kernfunktionen Aufschlüsselung

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The PC Injection Molding Process: Step-by-Step Precision

PC’s unique characteristics—high melting point, Feuchtigkeitsempfindlichkeit, and high viscosity—require a specialized, optimized process to maintain clarity, Stärke, und dimensionale Stabilität. Our workflow minimizes defects and maximizes performance, whether you’re producing 50 optical lens prototypes or 500,000 smartphone casings.​

Schritt 1: Materialvorbereitung (Critical for PC)​

PC absorbs moisture rapidly (bis zu 0.3% of its weight in 24 Stunden bei 50% Luftfeuchtigkeit), was verursacht hydrolytic degradation (vergilbt, Blasen, or reduced impact strength) during molding. Our preparation process eliminates this risk:​

• Trocknen: PC pellets are dried in dehumidifying dryers at 120–140°C for 4–6 hours (BPA-free PC: 120°C/4hrs; glass-filled PC: 130°C/5hrs; optical PC: 140°C/6hrs) to reduce moisture content to <0.02%.​

• Additive/Filler Blending: Mix dried pellets with Zusatzstoffe (UV -Stabilisatoren für den Gebrauch im Freien, flame retardants for electronics) oder Füllstoffe (glass fiber for extra strength, carbon fiber for conductivity—note: fillers reduce clarity).​

• Lagerung: Dried pellets are stored in sealed, heated hoppers (60–80 ° C.) to prevent reabsorbing moisture before molding.​

Schritt 2: Schimmeldesign (Optimized for PC)​

PC’s high viscosity (10x higher than PP) and low shrinkage (0.5–0,8%) require mold designs that prioritize flow and precision:​

• Flow Optimization: Molds include large runners (1.5–2x the size of ABS molds) and wide gates to help PC flow into complex cavities (Z.B., thin-walled electronics casings).​

• Kühlsysteme: Uniform water-cooling channels (spaced 20–30mm apart) to prevent uneven cooling (which causes warping or cloudiness); mold temperature maintained at 80–120°C (higher than most plastics) to reduce internal stress.​

• Optical Considerations: Molds for optical PC parts (Objektive, prisms) have mirror-polished surfaces (Ra <0.02 μm) and no parting lines (to avoid light scattering); use of hot runner systems to prevent material degradation in cold runners.​

Schritt 3: Injektionsparameter (Tailored to PC Grades)​

PC’s high melting point and viscosity require precise parameter tuning to avoid degradation (vergilbt) or incomplete filling. Below are standard settings for two common grades:​

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Schritt 4: Nachbereitungsvorgänge

Nach dem Ermachung, PC parts may undergo:​

• Trimmen: Removing flash (überschüssiges Plastik) with diamond-coated tools (to avoid scratching PC’s surface—critical for optical parts).​

• Glühen: Heating parts to 110–130°C for 1–2 hours, dann langsam abkühlen (5–10°C/hour) Inneren Stress reduzieren (prevents cracking in high-temperature applications like automotive headlights).​

• Oberflächenbehandlung: Applying coatings, Texturierung, or printing (Siehe Abschnitt 5 für Details).​

• Inspektion: QC checks for:​

• Clarity: Haze measurement (≤1% for optical parts) and light transmittance (≥88% for clear parts).​

• Dimensionsgenauigkeit: Laser measurement (±0.001mm for optical parts).​

Schlagfestigkeit: Notched Izod testing (≥60 kJ/m² for general-purpose PC).

Materialien: Choosing the Right PC Grade for Your Project

Not all PC is the same—each grade is tailored to specific applications, balancing clarity, Stärke, und Kosten. Selecting the right grade ensures your parts meet performance, regulatorisch, and design goals.​

Common PC Types for Injection Molding​

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Tipps zur Materialauswahl

1. Prioritize clarity vs. Stärke: For optical applications (Objektive), choose optical-grade PC; für strukturelle Teile (Kfz -Klammern), pick glass-filled PC (trade clarity for strength).​

2. Check regulatory needs: For food/medical contact, use BPA-free PC (trifft FDA 21 CFR 177.1580); für Elektronik, use flame-retardant PC (meets UL94 V0).​

Nachhaltigkeit umarmen: Our rPC is ideal for brands focused on eco-friendly practices—use it for opaque, nicht kritische Teile (Z.B., colored smartphone cases) to cut costs and reduce environmental impact.

Oberflächenbehandlung: Enhancing PC’s Function & Ästhetik

PC’s smooth, clear surface is ideal for customization—but requires specialized treatments to avoid scratching or reducing clarity. We offer five core treatments tailored to PC’s properties:​

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Vorteile: Why Choose PC Injection Molding?

PC injection molding offers unmatched benefits for applications requiring a blend of strength, Klarheit, and heat resistance—outperforming most other transparent plastics and even glass in many cases.​

Key Advantages of PC Injection Molding​

• Resistenz mit hoher Wirkung: 20x stronger than glass and 10x stronger than acrylic—PC parts are shatterproof (Z.B., a PC water bottle won’t break if dropped, unlike glass or acrylic).​

• Clarity & Transparenz: 90% leichte Durchlässigkeit (nearly as clear as glass) with the flexibility of plastic—ideal for optical applications (Objektive) und Konsumgüterprodukte (transparente Gehäuse).​

• Wärmewiderstand: Continuous use temperature of 120–140°C (acrylic maxes out at 80°C)—works in high-temperature environments like automotive engine bays or medical sterilization (short-term exposure to 180°C).​

• Dimensionsstabilität: Niedrige thermische Expansion (6.7 × 10⁻⁵/°C) vs. Acryl (17 × 10⁻⁵/°C)—PC parts retain shape in temperature fluctuations (critical for precision parts like optical lenses).​

• Anpassbarkeit: Accepts additives (UV/flame retardants), Füllstoffe (Glasfaser), und Oberflächenbehandlungen (hard-coat, Drucken)—adapts to any application, from opaque structural parts to ultra-clear optics.​

PC vs. Other Transparent Injection Molding Plastics​

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Anwendungsbranche: Where PC Injection Molding Excels

PC versatility—blending strength, Klarheit, and heat resistance—makes it indispensable in five key industries. Im Folgenden finden Sie reale Anwendungsfälle und unsere maßgeschneiderten Lösungen:​

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Fallstudien: Our PC Injection Molding Success Stories

We’ve helped clients across industries solve complex challenges with PC injection molding—delivering parts that meet strict standards for clarity, Stärke, und Leistung. Im Folgenden finden Sie drei herausragende Projekte:​

Fallstudie 1: Optical-Grade PC Automotive Headlight Lenses​

• Herausforderung: Ein führender Automobilhersteller benötigte 300,000 headlight lenses that were ultra-clear (≥90% light transmittance), zerschmettert (Sicherheitsstandards erfüllen), and resistant to yellowing (für 5+ jahrelange Nutzung im Freien). Their previous acrylic lenses cracked easily and yellowed after 2 Jahre.

• Lösung: Wir haben benutzt optical-grade PC (92% Durchlässigkeit) and designed custom hardened steel molds with mirror-polished cavities (Ra 0.02 μm) to ensure clarity. We optimized injection parameters (280–310°C barrel temp, 120°C mold temp) to avoid cloudiness and added a dual-layer coating: UV-stabilizer (Verhindert das Gelben) + hard-coat (2H scratch resistance). Post-molding, we annealed lenses at 120°C for 1.5 hours to reduce internal stress.​

• Ergebnisse: The PC lenses passed all safety tests (shatterproof when struck with a 2kg steel ball) and retained 88% clarity after 5 years of accelerated weather testing (vs. acrylic’s 60%). The automaker expanded their order to 500,000 units/year and switched all their vehicle lines to our PC headlights.​

Fallstudie 2: BPA-Free PC Medical Inhaler Housings​

• Herausforderung: A pharmaceutical company needed 100,000 inhaler housings that were BPA-free (meets FDA/EFSA standards), leicht (≤20g), und wirkungsbeständige (to survive drops from 1.2m). Their previous PP housings were too flexible and warped after sterilization.​

• Lösung: Wir haben ausgewählt BPA-free PC (Zugfestigkeit 65 MPA) and designed thin-walled molds (1.5MM Wandstärke) Gewicht reduzieren. We used nitrogen gas assist during injection to ensure uniform filling of the housing’s intricate vents (critical for airflow). Post-molding, we added a soft-touch texturing (via chemical etching) to improve grip for patients with limited dexterity.​

• Ergebnisse: The BPA-free PC housings weighed 18g (meeting the client’s target), bestanden 100+ Ethylenoxid (Ausrichten) sterilization cycles with no warping, und überlebte 50 Drop -Tests (1.2M) ohne Risse. Der Kunde meldete a 30% increase in patient satisfaction due to the improved grip, Und wir produzieren jetzt 200,000 housings/month for their global inhaler line.​

Fallstudie 3: Hard-Coated PC Smartphone Screen Protectors​

• Herausforderung: Eine Marke für Unterhaltungselektronik benötigt 1 million smartphone screen protectors that were clear (≥88% transmittance), kratzfest (3H pencil hardness), and compatible with touchscreens (no impact on sensitivity). Their previous uncoated PC protectors scratched easily and reduced screen clarity.​

• Lösung: Wir haben benutzt general-purpose PC (90% Durchlässigkeit) and developed a proprietary hard-coating process: spraying a silicone-based coating (5µm Dicke) and curing it at 100°C for 30 Minuten. We optimized mold design to produce ultra-thin protectors (0.3mm) that didn’t affect touch sensitivity and added a anti-fingerprint layer (via UV-cured ink) to reduce smudges.​

Ergebnisse: The hard-coated PC protectors met 3H scratch resistance (survived scratches from keys and coins), zurückgehalten 89% Klarheit, and had no impact on touch sensitivity (tested with 10,000 Taps). They sold out within 2 Monate des Starts, and the brand expanded their order to 2 million units/quarter—citing our “perfect balance of clarity and durability.”

Why Choose Us for Your PC Injection Molding Needs?

With countless injection molding suppliers offering PC services, Yigu Technology stands out for our deep specialization in PC, uncompromising quality, and client-centric approach. Here’s why leading brands in automotive, medizinisch, and electronics trust us:​

1. Specialized PC Expertise​

We don’t just mold plastics—we specialize in Polycarbonate. Unsere Ingenieure haben 20+ years of experience solving PC’s unique challenges:​

• Moisture sensitivity: Proprietary drying protocols (Zu <0.02% Feuchtigkeit) that eliminate bubbles and yellowing.​

• Optische Klarheit: Mold polishing to Ra 0.02 μm (Spiegel Finish) for lenses and headlights.​

• Wärmewiderstand: Process optimization for glass-filled PC (PC-GF30) to retain strength at 140°C.​

We’ve worked with every PC grade (Allgemeinzweck, BPA-frei, optisch, recycelt) and know how to tailor processes to your exact application—something generalist molders can’t match.​

2. Rigorous Quality Assurance​

Quality is non-negotiable for PC parts (especially optical and medical). Wir halten ISO 9001 (Allgemeine Fertigung) Und ISO 13485 (Herstellung von medizinischen Geräten) Zertifizierungen, mit a 99.7% defect-free rate for PC components. Our quality checks include:​

• Pre-molding: Moisture testing (Karl Fischer titration) to ensure PC pellets are dry (<0.02%).​

• In-molding: Real-time laser measurement (±0.001mm tolerance) and vision inspection for surface defects (Kratzer, cloudiness).​

• Post-molding:​

• Clarity testing (haze meter for optical parts: ≤0.5% haze).​

• Impact -Test (Notched Izod: ≥60 kJ/m² for general-purpose PC).​

• Regulatory compliance (FDA 21 CFR 177.1580 for BPA-free PC; UL94 V0 for flame-retardant PC).​

3. Customer-Focused Service​

We treat your project as if it’s our own. From day one, you’ll work with a dedicated account manager who:​

• Provides free material/design consultations (Z.B., helping you choose between optical-grade PC and hard-coated PC for lenses).​

• Shares 3D mold designs and sample parts (innerhalb 5 Tage) for approval before full production.​

• Offers flexible lead times: 4–6 days for prototypes (Aluminiumformen), 3–5 weeks for high-volume runs (Stahlformen).​

• Bietet 24/7 support for urgent issues (Z.B., expediting orders for product launches).​

4. Innovative Lösungen

Wir investieren 10% unserer jährlichen Einnahmen in R.&D to push the boundaries of PC injection molding. Recent innovations include:​

• Ultra-Clear rPC: A recycled PC grade (rPC) mit 85% leichte Durchlässigkeit (vs. standard rPC’s 70–80%)—ideal for semi-optical parts like smartphone casings.​

• Fast-Cure Hard-Coat: A coating that cures in 15 Minuten (vs. 30 Minuten) without reducing scratch resistance—cuts production time for screen protectors by 20%.​

• Low-Temp Molding for BPA-Free PC: A process that reduces barrel temperature by 10°C (to 250–290°C) for BPA-free PC—prevents thermal degradation and improves part consistency.​

5. Sustainable Practices​

We’re committed to reducing our environmental impact while delivering top-tier PC parts:​

• Recycled PC (rPC): Wir beziehen 45% of our PC materials from post-industrial waste (Z.B., PC scrap from electronics manufacturing) and offer rPC grades that cost 15–25% less than virgin PC.​

• Abfallreduzierung: We recycle 97% of production scrap (Blitz, defekte Teile) back into the molding process—sending only 3% to landfills.​

Energieeffizienz: Our injection molding machines use heat recovery systems to reuse 30% of the heat from barrel heating—reducing energy consumption by 25% vs. standard machines.

FAQ