Our Polystyrene PS Injection Molding Services
Eleve sua produção com a primeira camada da Yigu Technology Poliestireno (Ps) Serviços de moldagem por injeção—where precision meets versatility. Whether you need transparent packaging, lightweight consumer products, or high-volume electronic components, we leverage our injection molding expertise, ferramentas personalizadas, and strict quality control to deliver cost-effective, customizable PS parts tailored to your industry needs.

O que é poliestireno (Ps) Moldagem por injeção?
Poliestireno (Ps) is a widely used thermoplastic polymer made from styrene monomers, celebrated for its clarity, acessibilidade, e facilidade de processamento. Moldagem por injeção is a manufacturing process that melts plastic pellets, injects the molten material into a custom mold cavity, cools it, and ejects the finished part. Combinado, PS injection molding produces consistent, high-quality components for diverse sectors, leveraging PS’s unique traits to meet various application demands.
Definições -chave & Process Overview
Termo | Definição |
Poliestireno (Ps) | A thermoplastic with two main forms (rigid and foam); known for clarity, leve, and low cost. |
Moldagem por injeção | A cyclic mass-production process: PS pellets → melted → injected into mold → cooled → ejected (repeats for efficiency). |
Cavidade do molde | The hollow space in a mold that shapes the final PS part; can have 1–128 cavities for high-volume output. |
Material Properties of PS
PS’s distinct properties make it ideal for injection molding. Below are the most critical traits for manufacturers and buyers:
- Clarity and Transparency: Amorphous PS (general-purpose PS) tem 90% light transmittance—comparable to glass, making it perfect for visible packaging.
- Densidade: 1.04–1,06 g/cm³ (leve, reducing shipping costs and part weight for consumer goods).
- Ponto de fusão: 140–180 ° C. (low melting temperature, lowering energy consumption during molding).
- Fragilidade: Rigid PS is brittle (força de impacto: 1.5–2.5 kJ/m²), but can be modified with rubber additives for toughness.
Ease of Processing: Low viscosity when melted, filling complex mold details easily—ideal for intricate parts.
Nossas capacidades: Delivering Top-Tier PS Injection Molding Solutions
Na tecnologia Yigu, nosso PS 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. We prioritize precision and quality to ensure your PS components meet the highest standards.
Recuperação de recursos do núcleo
Capacidade | Detalhes | Benefícios para você |
Ferramentas personalizadas | In-house mold design and fabrication (aluminum for prototypes, hardened steel for long-run PS parts). | Molds tailored to your part’s geometry (Por exemplo, intricate packaging or electronic casings); lead times as short as 2–3 weeks. |
Moldagem por precisão | CNC-controlled injection machines with ±0.003mm tolerance; in-line vision inspection for dimensional accuracy. | Ideal for small, peças detalhadas (Por exemplo, componentes de dispositivos médicos, conectores eletrônicos) that require tight specs. |
Produção de alto volume | 30+ Máquinas de moldagem por injeção (50–600 tons clamping force) with automated feeding and ejection systems. | Capacidade de produzir 800,000+ PS parts/month; lower unit costs for bulk orders (Por exemplo, embalagem, bens de consumo). |
Controle de qualidade (QC) | Verificações em linha (para clareza, precisão dimensional) and post-production testing (impacto, Resistência ao calor); ISO 9001 certified. | 99.7% taxa livre de defeitos; ensures PS parts meet your industry’s quality standards (Por exemplo, FDA para embalagem de alimentos). |
The PS Injection Molding Process: Step-by-Step Excellence
PS’s unique melting and cooling properties require a optimized process to avoid defects like warping or cloudiness. Our workflow ensures consistent quality while maximizing efficiency.
Etapa 1: Preparação do material
- Pellet Selection: Choose between general-purpose PS (Gpps, para clareza), high-impact PS (QUADRIS, por resistência), or foam PS (EPS, for insulation).
- Additive Blending: Mix PS pellets with aditivos (UV stabilizers for outdoor use, colorants for branded parts, rubber modifiers for impact resistance).
- Secagem: PS absorbs minimal moisture, but we dry pellets at 60–70°C for 1–2 hours to prevent surface defects (Por exemplo, bubbles in transparent parts).
Etapa 2: Mold Design
- Clarity Considerations: Molds for transparent PS parts have polished surfaces to maintain clarity (no scratches or texture that reduces light transmittance).
- Cooling Optimization: Molds include uniform cooling channels to prevent warping—critical for thin-walled PS parts (Por exemplo, embalagem).
- Prototype Testing: We 3D-print mold prototypes first to validate design (reduces costly revisions and ensures part functionality).
Etapa 3: Injection Parameters (Critical for PS)
PS’s low melting point and viscosity require precise parameter tuning. Below are our standard settings for GPPS (the most common PS grade):
Parâmetro | Ideal Range for GPPS | Propósito |
Temperatura do barril | 160–200°C | Melts PS evenly without degradation (higher temps cause yellowing). |
Pressão de injeção | 40–100 MPa | Preenche cáries de molde completamente (critical for intricate details like packaging logos). |
Tempo de resfriamento | 10–25 seconds | Prevents warping; balances speed and part stability (shorter for thin parts). |
Etapa 4: Post-Molding Operations
After demolding, PS parts may undergo:
- Aparar: Removendo o excesso de plástico (clarão) with automated tools (critical for clear parts to maintain aesthetics).
- Conjunto: Joining parts via adhesives or snap-fits (for complex components like consumer product enclosures).
Inspeção: Final QC checks for clarity, precisão dimensional, e qualidade da superfície (100% inspection for medical or food-contact parts).
Materiais: Choosing the Right PS for Your Project
Not all PS is the same—selecting the right grade ensures your parts meet performance, custo, and aesthetic goals. We offer a full range of PS materials, plus recycled options.
Types of PS for Injection Molding
PS Type | Key Traits | Aplicações comuns |
PS (Gpps) | Claro, rígido, baixo custo (≈1.20–1.80/kg). | Embalagem (recipientes de comida, Blister pacotes), electronic casings (Controles remotos), toys. |
Ps de alto impacto (QUADRIS) | Difícil, resistente ao impacto (força de impacto: 10–20 kJ/m²), opaque. | Bens de consumo (peças do aparelho, Carros de brinquedo), Aparelho interior automotivo, Capas de dispositivos médicos. |
Expandable PS (EPS) | Foam-like, leve (densidade: 0.015–0.04 g/cm³), excellent insulation. | Embalagem (protective inserts for electronics), disposable food containers, construction insulation. |
Styrene-Acrylonitrile (SAN) | Resistente ao calor (até 90 ° C.), resistente a produtos químicos, clear. | Embalagem de alimentos (coffee cups), recipientes cosméticos, componentes de dispositivos médicos. |
Material Selection Tips
- Prioritize clarity: For visible packaging (Por exemplo, Blister pacotes), choose GPPS or SAN.
- Need toughness?: Opt for HIPS (ideal for parts prone to drops, like toy cars or appliance handles).
Embrace sustainability: Nosso recycled PS (rPS) is made from post-consumer waste (Por exemplo, old packaging) and retains 85% of the performance of virgin PS—perfect for eco-friendly brands.
Tratamento de superfície: Enhancing PS Parts’ Aesthetics & Funcionalidade
PS’s natural surface is smooth (especially GPPS) but can be modified to improve grip, marca, ou durabilidade. We offer five core surface treatments tailored to PS’s properties:
Tratamento | Processo | Benefícios |
Acabamento superficial | Polimento (for GPPS to boost clarity) or sandblasting (for matte finishes). | Aprimora a estética (clear parts look more premium) or reduces glare (Por exemplo, electronic casings). |
Textura | Adicionando padrões (com nervuras, dotted, ou toque suave) to the mold surface. | Melhora a aderência (Por exemplo, toy handles, Appliance Knobs) or hides fingerprints (Por exemplo, bens de consumo). |
Revestimento | Aplicando uma camada fina (Por exemplo, acrílico, poliuretano) to the PS surface. | Boosts scratch resistance (critical for clear packaging) or UV protection (peças ao ar livre). |
Pintura | Spray-painting with PS-compatible primers (prevents paint peeling). | Cores personalizadas para a marca (Por exemplo, peças de brinquedo, Aparelho automotivo) or opaque finishes (for HIPS). |
Impressão | Digital printing or screen printing for logos, Rótulos, or instructions. | Claro, durable markings (Por exemplo, food packaging expiration dates, medical device labels). |
Vantagens: Why Choose PS Injection Molding?
PS injection molding offers a unique blend of cost savings, estética, and versatility—making it a top choice for manufacturers across industries.
Key Advantages of PS Injection Molding
- Custo-efetividade: PS is one of the cheapest thermoplastics (GPPS costs 1.20–1.80/kg), and injection molding’s high volume drives unit costs down to 0.05–0.30 per part (ideal for high-volume items like packaging).
- Clarity and Transparency: GPPS has 90% light transmittance—cheaper than glass or acrylic, making it perfect for packaging where product visibility matters (Por exemplo, candy, eletrônica).
- Customizabilidade: Molds can create complex shapes (Por exemplo, intricate toy parts, custom packaging), and PS accepts additives for color, Resistência a UV, or toughness.
- Leve: PS’s density (1.04–1,06 g/cm³) é 50% less than glass and 30% less than ABS—reducing shipping costs and improving user comfort (Por exemplo, lightweight toy parts).
- Ease of processing: PS melts at low temperatures (economiza energia) and has low viscosity (fills small mold details easily)—reducing production time and defects.
PS vs. Other Common Injection Molding Plastics (for Clarity-Critical Applications)
Material | Custo (por kg) | Light Transmittance | Força de impacto (KJ /) | Melhor para |
Gpps | 1.20–1.80 | 90% | 1.5–2.5 | Low-cost clear packaging, toys. |
Acrílico (PMMA) | 2,50-3,50 | 92% | 2.0–3.0 | High-end clear parts (Por exemplo, Exibir casos). |
BICHO DE ESTIMAÇÃO | 1.80–2.50 | 88% | 5.0–7.0 | Durable clear packaging (Por exemplo, garrafas de água). |
Indústria de aplicativos: Where PS Injection Molding Shines
PS’s versatility—from clarity to toughness—makes it indispensable in five key industries. Below are real-world use cases and our tailored solutions:
Indústria | Common PS Parts | Nossas soluções |
Embalagem | Blister packs, recipientes de comida, protective inserts (EPS), cosmetic jars. | GPPS for clear packaging; EPS for shock-absorbent inserts; FDA-compliant grades for food contact. |
Produtos de consumo | Peças de brinquedo, appliance handles (QUADRIS), Controles remotos, disposable cutlery. | HIPS for impact-resistant parts; GPPS for colorful, clear toy components; custom tooling for unique shapes. |
Dispositivos médicos | Disposable syringes (SAN), Tubos de teste, caixas de dispositivo (QUADRIS). | Sterilizable PS grades; Processos certificados ISO 13485; precision molding for small, peças precisas. |
Automotivo | Enteamento interno (QUADRIS), cup holders, painéis de porta, speaker grilles. | HIPS for impact resistance; UV-stabilized additives for long-term durability; custom colors to match car interiors. |
Eletrônica | Remote control casings (Gpps), Laptop molduras (QUADRIS), LED diffusers. | Precision molding for tight-fitting parts; flame-retardant additives (meets UL94 standards); textured finishes to hide fingerprints. |
Estudos de caso: Our PS Injection Molding Success Stories
We’ve helped clients across industries overcome challenges with our PS injection molding services. Abaixo estão três projetos de destaque:
Estudo de caso 1: Clear GPPS Blister Packs for a Cosmetics Brand
- Desafio: A cosmetics brand needed 500,000 blister packs that were clear (to showcase products), baixo custo, and durable enough to withstand shipping.
- Solução: We used GPPS (90% clareza) with a scratch-resistant coating and custom tooling to match the brand’s logo and product shapes. Molds had 32 cavities for high-volume production.
- Resultados: Blister packs reduced packaging costs by 20% vs.. acrylic alternatives; 99.8% entrega no prazo; customer feedback praised the clear visibility of products.
Estudo de caso 2: Impact-Resistant HIPS Toy Parts for a Toy Manufacturer
- Desafio: A toy company needed 300,000 toy car bodies that were tough (to withstand drops), colorful, e leve.
- Solução: We used HIPS (força de impacto: 15 KJ /) with color additives and custom tooling for intricate designs (Por exemplo, poços da roda, Logos). In-line QC checked for cracks and color consistency.
- Resultados: Toy parts had 0 breakage in drop tests (from 1.5m); production time reduced by 15% vs.. their previous supplier; cost per part lowered by 12%.
Estudo de caso 3: Sterilizable SAN Medical Test Tubes for a Lab Supply Company
- Desafio: A lab supply company needed 100,000 test tubes that were clear, heat-sterilizable (up to 121°C), e resistente a produtos químicos (to acids/bases).
- Solução: We used SAN (resistente ao calor, claro) with FDA-compliant additives and precision molding (± 0,005 mm de tolerância) to ensure uniform tube diameter. Post-molding sterilization validation was conducted.
Resultados: Test tubes met ISO 13485 padrões; 100% passed sterilization tests; entregue 1 week ahead of schedule—helping the client meet urgent lab demand.
Why Choose Us for Your PS Injection Molding Needs?
With so many PS injection molding suppliers, A tecnologia Yigu se destaca por nossa experiência, qualidade, e compromisso com o sucesso do cliente. Here’s why you should partner with us:
- Especialização: 12+ years specializing in PS injection molding—our engineers know how to optimize processes for PS’s unique traits (Por exemplo, preventing yellowing in GPPS, boosting impact strength in HIPS).
- Garantia de qualidade: ISO 9001 e ISO 13485 Certificações; 99.7% taxa livre de defeitos; 100% Inspeção para peças críticas (Por exemplo, medical test tubes, embalagem de alimentos).
- Atendimento ao Cliente: Dedicated account managers who work with you from design to delivery; Consultas de design gratuitas (to optimize your part for PS molding); 24/7 support for urgent orders.
- Inovação: Nós investimos 7% de receita em r&D—recent breakthroughs include bio-based PS (made from plant-based styrene) and high-clarity rPS (recycled PS with 88% Transmitância de luz).
Sustentabilidade: 40% of our PS materials are recycled (rPS); our factories use energy-efficient machines (reduzindo as emissões de carbono por 28%); we offer a take-back program for old PS parts to recycle into new products.