Our Polyvinyl Chloride PVC Injection Molding Services
Elevate your production with Yigu Technology’s premium Polyvinyl Chloride (CLORURO DE POLIVINILO) Injection Molding services—where cutting-edge technology, precision craftsmanship, and custom solutions converge. Whether you need high-volume construction components, flame-retardant electrical parts, or durable consumer products, entregamos rentable, chemically resistant PVC parts tailored to your industry’s unique demands.
What Is Polyvinyl Chloride (CLORURO DE POLIVINILO) Moldeo por inyección?
Polyvinyl Chloride (CLORURO DE POLIVINILO) is one of the world’s most widely used thermoplastics, composed of vinyl chloride monomers. It stands out for its adaptability—easily modified with additives to suit diverse applications. moldeo por inyección is a manufacturing process that melts plastic pellets, injects the molten material into a custom mold, and cools it to form a finished part. Together, PVC injection molding creates consistent, high-performance components for sectors ranging from construction to medical devices.
Key Definitions & Descripción del proceso
| Término | Definición |
| Polyvinyl Chloride (CLORURO DE POLIVINILO) | A versatile thermoplastic that can be rigid or flexible, depending on additives; known for durability and flame resistance. |
| Moldeo por inyección | A cyclic process: PVC pellets → melted → injected into mold cavity → cooled → ejected (repeats for mass production). |
| Mold Cavity | The hollow space in a mold that shapes the final PVC part; can have 1–64 cavities for efficient high-volume production. |
Material Characteristics of PVC
PVC’s unique traits make it ideal for injection molding:
- Dual Form: Can be rigid (used for pipes, window frames) or flexible (used for hoses, medical tubing) with plasticizers.
- Retardante de llama: Naturally resistant to fire (requires no extra additives for basic flame protection).
- Resistencia química: Unaffected by most acids, álcalis, and solvents (critical for industrial and medical use).
Rentabilidad: Raw PVC is affordable, making it a budget-friendly choice for large-scale projects.
Nuestras capacidades: Delivering Excellence in PVC Injection Molding
En Yigu Tecnología, nuestro PVC injection molding expertise is built on advanced equipment, skilled engineering, and a focus on solving client challenges—from small-batch custom parts to large-scale production runs.
Core Capabilities Overview
| Capacidad | Detalles | Benefits for You |
| Tecnología avanzada | 25+ CNC injection molding machines (clamping force: 100–800 tons) with smart monitoring systems. | Real-time quality control; 20% faster production than standard machines. |
| Herramientas personalizadas | In-house mold design and fabrication (steel molds for rigid PVC, aluminum for flexible PVC prototypes). | Molds tailored to your part’s geometry; lead times as short as 2–3 weeks. |
| Moldeo de precisión | Molding tolerance of ±0.005mm; in-line laser measurement for dimensional accuracy. | Ideal for intricate parts (p.ej., conectores electricos, componentes de dispositivos médicos). |
| Producción de alto volumen | Automated assembly lines and 24/7 operation; capacity for 600,000+ PVC parts/month. | Lower unit costs for bulk orders; on-time delivery even for large projects. |
The PVC Injection Molding Process: Step-by-Step Precision
PVC’s unique melting properties (it decomposes at high temperatures) require a carefully optimized process. Our workflow ensures consistent quality while protecting PVC’s integrity.
Paso 1: Preparación de materiales
- Pellet Selection: Choose between rigid PVC (no plasticizers) or flexible PVC (with 10–40% plasticizers like phthalates).
- Additive Blending: Mix PVC pellets with aditivos (stabilizers to prevent decomposition, UV inhibitors for outdoor use, colorantes).
- Drying: PVC absorbs minimal moisture, but we dry pellets at 60–70°C for 1–2 hours to avoid surface defects (p.ej., pinholes).
Paso 2: Mold Design
- Compatibilidad de materiales: Molds for rigid PVC use cooling channels to prevent warping; molds for flexible PVC have smoother surfaces to avoid sticking.
- Prototype Testing: We 3D-print mold prototypes first to validate design—reducing costly revisions later.
Paso 3: Injection Parameters (Critical for PVC)
PVC is sensitive to heat, so precise parameters are non-negotiable. Below are our standard settings for rigid PVC:
| Parámetro | Ideal Range | Propósito |
| Barrel Temperature | 160–190°C | Melts PVC without decomposition (higher temps cause toxic fumes). |
| Injection Pressure | 80–150MPa | Fills mold cavities completely (critical for thin-walled parts like electrical casings). |
| Tiempo de enfriamiento | 20–50 seconds | Prevents warping; longer for thick rigid PVC parts. |
Paso 4: Post-Molding Operations
Después de la expulsión, las piezas se someten:
- Guarnición: Removing excess plastic (destello) with automated tools.
- Desbarbado: Smoothing sharp edges (critical for consumer products and medical devices).
Inspección: Final checks for dimensional accuracy and surface quality.
Materiales: Choosing the Right PVC for Your Project
PVC’s versatility comes from its ability to be modified into different grades. Selecting the right type ensures your parts meet performance, seguridad, and cost goals.
Types of PVC for Injection Molding
| PVC Type | Propiedades clave | Aplicaciones comunes |
| Rigid PVC (RPVC) | Stiff, high tensile strength (50 MPa), excellent impact resistance. | Construcción (window frames, tubería), automotive trim, electrical casings. |
| Flexible PVC (FPVC) | Bendable, elástico (elongation up to 300%), resistant to cracking. | Dispositivos médicos (tubing, jeringuillas), bienes de consumo (juguetes, hoses), automotive gaskets. |
| Foamed PVC | Ligero (densidad: 0.6–0.8 g/cm³), sound-absorbent. | Interior design (wall panels), embalaje (protective inserts). |
| Recycled PVC (rPVC) | 75–85% of the strength of virgin PVC; eco-friendly and cost-effective. | Construcción (fencing, decking), non-critical consumer goods (contenedores de almacenamiento). |
Key Material Properties of PVC
| Property | Rigid PVC | Flexible PVC |
| Densidad (gramos/cm³) | 1.3–1.45 | 1.1–1.3 |
| Melting Range (°C) | 160–190 | 140–170 |
| Retardante de llama | Excelente (UL94 V0 rating) | Bien (UL94 V2 rating with additives) |
| Resistencia química | Alto (resists acids, aceites, disolventes) | Alto (resists water, mild chemicals) |
Tratamiento superficial: Enhancing PVC Parts’ Function and Aesthetics
PVC’s natural surface is smooth but can be modified to improve grip, durabilidad, or branding. We offer five proven acabado superficial techniques for PVC parts:
| Tratamiento | Proceso | Beneficios |
| Texturizado | Agregar patrones (mate, acanalado, or sandblasted) to the mold surface. | Mejora el agarre (p.ej., tool handles), hides scratches (p.ej., bienes de consumo). |
| Revestimiento | Applying a thin layer (p.ej., poliuretano, acrílico) to the part surface. | Boosts UV resistance (for outdoor parts like window frames) o resistencia química. |
| Cuadro | Spray-painting with PVC-compatible primers (to ensure adhesion). | Custom colors for branding (p.ej., automotive trim, juguetes). |
| Impresión | Digital or screen printing for logos, etiquetas, or instructions. | Claro, durable markings (p.ej., dispositivos médicos, componentes electricos). |
| Pulido | Buffing the surface to a high gloss. | Creates a premium look (p.ej., bienes de consumo de alta gama, piezas decorativas). |
Ventajas: Why Choose PVC Injection Molding?
PVC injection molding offers a unique mix of performance, ahorro de costos, and versatility—making it a top choice for manufacturers across industries.
Key Advantages of PVC Injection Molding
- Durabilidad: PVC parts last 10–50 years (rigid PVC) or 5–15 years (flexible PVC) in harsh environments (p.ej., outdoor construction, industrial settings).
- Resistencia química: PVC resists acids, álcalis, and solvents—ideal for medical devices (esterilizable) and industrial parts (exposed to chemicals).
- Personalización: Easily modified with additives to be rigid/flexible, ignífugo, or UV-resistant; molds can create complex shapes (p.ej., conectores electricos).
- Rentabilidad: Raw PVC costs 1.00–1.80/kg (20% cheaper than PP), and injection molding drives unit costs down to 0.10–0.50 per part for high volumes.
- Retardante de llama: Naturally resistant to fire (meets UL94 V0 standards without extra additives)—critical for electrical components and building materials.
PVC vs. Other Common Injection Molding Plastics
| Materiales | Costo (por kilogramo) | Flame Resistance | Resistencia química | Mejor para |
| CLORURO DE POLIVINILO | 1.00–1.80 | Excelente (UL94 V0) | Alto | Flame-retardant, chemical-resistant parts. |
| PÁGINAS | 1.20–2.00 | Poor (needs additives) | Alto | Ligero, cost-sensitive parts. |
| ABS | 2.50–3.50 | Fair (needs additives) | Moderado | Rígido, high-gloss parts. |
Aplicaciones Industria: Where PVC Injection Molding Excels
PVC’s adaptability (rigid/flexible, ignífugo, resistente a productos químicos) makes it indispensable in five key industries.
Industry-Specific Applications & Nuestras soluciones
| Industria | Common PVC Parts | Our Tailored Solutions |
| Construcción | Window frames, pipe fittings, manijas de las puertas, fencing. | Rigid PVC molding; UV-resistant additives; compliance with building codes (p.ej., ASTM D1784). |
| Automotor | Dashboard trim, aislamiento de alambre, door gaskets, floor mats. | Flexible PVC for gaskets; rigid PVC for trim; flame-retardant grades (meets ISO 3795). |
| Productos de consumo | Piezas de juguete, tool handles, shower curtains, storage bins. | BPA-free flexible PVC (juguetes); textured rigid PVC (tool handles); custom colors. |
| Dispositivos médicos | IV tubing, syringe barrels, oxygen masks, mangos de instrumentos quirúrgicos. | Sterilizable flexible PVC; ISO 10993-certified processes (biocompatibilidad). |
| Electrical Components | Cable insulation, switch casings, circuit board holders, junction boxes. | Flame-retardant rigid PVC; high dielectric strength (meets IEC 60695). |
Estudios de caso: Our PVC Injection Molding Success Stories
We’ve helped clients across industries overcome unique challenges with our PVC injection molding services. Below are three standout projects:
Estudio de caso 1: Rigid PVC Window Frames for a Construction Company
- Desafío: A builder needed 50,000 window frames that were durable, resistente a los rayos UV, and cost-effective (to replace aluminum frames).
- Solución: We used rigid PVC with UV stabilizers and custom tooling to match the builder’s design. Molds included drainage channels to prevent water damage.
- Resultados: Frames lasted 30+ años (vs. 15 years for aluminum); 25% lower cost than aluminum; 100% compliance with local building codes.
Estudio de caso 2: Flexible PVC IV Tubing for a Medical Device Maker
- Desafío: A medical company needed 200,000 IV tubings that were flexible, esterilizable (via autoclaving), and BPA-free.
- Solución: We used phthalate-free flexible PVC with a smooth inner surface (to prevent clogs) and molded tubings with precise diameter (±0,1 mm).
- Resultados: Tubings met ISO 10993 estándares de biocompatibilidad; 0 defectos en 3 years of production; 15% faster delivery than the client’s previous supplier.
Estudio de caso 3: Flame-Retardant PVC Switch Casings for an Electrical Brand
- Desafío: An electrical brand needed switch casings that passed UL94 V0 flame tests and fit standard electrical boxes.
- Solución: We used rigid PVC with no extra flame retardants (PVC’s natural trait) and custom molds to match the box dimensions.
Resultados: Casings passed all safety tests; 30% lower material cost than ABS alternatives; on-time delivery rate of 99.8%.
Why Choose Us for Your PVC Injection Molding Needs?
With so many PVC injection molding suppliers, Yigu Technology stands out for our expertise, calidad, and commitment to client success:
- Pericia: 10+ years specializing in PVC injection molding—our engineers know how to avoid PVC’s common pitfalls (p.ej., decomposition, pandeo).
- Seguro de calidad: ISO 9001 y ISO 13485 certificaciones; 99.6% tasa libre de defectos; 100% inspection of critical parts (p.ej., dispositivos médicos).
- Servicio al cliente: Gerentes de cuentas dedicados; 24/7 apoyo; free design consultations (to optimize your part for PVC molding).
- Innovación: invertimos 6% of revenue in R&D—recent breakthroughs include bio-based PVC (made from plant-based vinyl chloride) and plasticizer-free flexible PVC.
Sostenibilidad: 35% of our materials are recycled PVC (rPVC); our factories use energy-efficient machines (reducing carbon emissions by 22%); we offer recycling programs for old PVC parts.