Our Polystyrene PS Injection Molding Services

Elevate your production with Yigu Technology’s top-tier Polystyrène (Ps) Services de moulage par injection—where precision meets versatility. Whether you need transparent packaging, lightweight consumer products, or high-volume electronic components, we leverage our injection molding expertise, outillage personnalisé, and strict quality control to deliver cost-effective, customizable PS parts tailored to your industry needs.​

polystyrene ps injection molding
polystyrene ps injection molding

Qu'est-ce que le polystyrène (Ps) Moulage par injection?

Polystyrène (Ps) is a widely used thermoplastic polymer made from styrene monomers, celebrated for its clarity, abordabilité, et facilité de traitement. Moulage par injection is a manufacturing process that melts plastic pellets, injects the molten material into a custom mold cavity, cools it, and ejects the finished part. Combiné, PS injection molding produces consistent, high-quality components for diverse sectors, leveraging PS’s unique traits to meet various application demands.​

Définitions clés & Aperçu du processus

TermeDéfinition
Polystyrène (Ps)A thermoplastic with two main forms (rigid and foam); known for clarity, léger, and low cost.​
Moulage par injectionA cyclic mass-production process: PS pellets → melted → injected into mold → cooled → ejected (repeats for efficiency).​
Cavité de mouleThe 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. Vous trouverez ci-dessous les traits les plus critiques pour les fabricants et les acheteurs:​

  • Clarity and Transparency: Amorphous PS (general-purpose PS) a 90% light transmittance—comparable to glass, making it perfect for visible packaging.​
  • Densité: 1.04–1,06 g / cm³ (léger, reducing shipping costs and part weight for consumer goods).​
  • Point de fusion: 140–180 ° C (low melting temperature, lowering energy consumption during molding).​
  • Fragilité: Rigid PS is brittle (force d'impact: 1.5–2.5 kJ/m²), but can be modified with rubber additives for toughness.​

Facilité de traitement: Low viscosity when melted, filling complex mold details easily—ideal for intricate parts.

Nos capacités: Delivering Top-Tier PS Injection Molding Solutions

À la technologie Yigu, notre 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.​

Répartition des capacités de base

CapacitéDétailsAvantages pour vous
Outillage personnaliséConception et fabrication de moisissures internes (Aluminium pour les prototypes, hardened steel for long-run PS parts).​Molds tailored to your part’s geometry (Par exemple, intricate packaging or electronic casings); lead times as short as 2–3 weeks.​
Moulage de précisionCNC-controlled injection machines with ±0.003mm tolerance; in-line vision inspection for dimensional accuracy.​Ideal for small, pièces détaillées (Par exemple, composants de dispositifs médicaux, connecteurs électroniques) that require tight specs.​
Production à volume élevé30+ Machines de moulage par injection (50–600 tons clamping force) with automated feeding and ejection systems.​Capacité à produire 800,000+ PS parts/month; lower unit costs for bulk orders (Par exemple, conditionnement, biens de consommation).​
Contrôle de qualité (QC)Chèques en ligne (pour plus de clarté, précision dimensionnelle) et tests de post-production (impact, résistance à la chaleur); OIN 9001 certified.​99.7% taux sans défaut; ensures PS parts meet your industry’s quality standards (Par exemple, FDA pour l'emballage alimentaire).​

The PS Injection Molding Process: Excellence étape par étape

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.​

Étape 1: Préparation des matériaux

  • Sélection de granulés: Choose between general-purpose PS (GPP, pour plus de clarté), high-impact PS (LES HANCHES, pour la ténacité), or foam PS (EPS, for insulation).​
  • Additive Blending: Mix PS pellets with additifs (UV stabilizers for outdoor use, colorants for branded parts, rubber modifiers for impact resistance).​
  • Séchage: PS absorbs minimal moisture, but we dry pellets at 60–70°C for 1–2 hours to prevent surface defects (Par exemple, bubbles in transparent parts).​

Étape 2: Conception de moisissure

  • 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 (Par exemple, conditionnement).​
  • Test de prototype: We 3D-print mold prototypes first to validate design (reduces costly revisions and ensures part functionality).​

Étape 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):​

ParamètreIdeal Range for GPPS​But
Température du baril160–200°C​Melts PS evenly without degradation (higher temps cause yellowing).​
Pression d'injection40–100 MPa​Remplit complètement les cavités des moisissures (critical for intricate details like packaging logos).​
Temps de refroidissement10–25 seconds​Empêche la déformation; balances speed and part stability (shorter for thin parts).​

Étape 4: Opérations post-moulage

Après démouloir, PS parts may undergo:​

  • Garniture: Retirer l'excès de plastique (éclair) with automated tools (critical for clear parts to maintain aesthetics).​
  • Assemblée: Joining parts via adhesives or snap-fits (for complex components like consumer product enclosures).​

Inspection: Final QC checks for clarity, précision dimensionnelle, et qualité de surface (100% inspection for medical or food-contact parts).

Matériels: Choosing the Right PS for Your Project

Not all PS is the same—selecting the right grade ensures your parts meet performance, coût, and aesthetic goals. We offer a full range of PS materials, plus les options recyclées.

Types of PS for Injection Molding​

PS Type​Traits clésApplications communes
PS à usage général (GPP)Clair, rigide, faible coût (≈​1.20–1.80/kg).​Conditionnement (récipients de nourriture, packs de cloques), electronic casings (télécommande), toys.​
PS à fort impact (LES HANCHES)Difficile, résistant à l'impact (force d'impact: 10–20 kJ/m²), opaque.​Biens de consommation (pièces de l'appareil, voitures de jouets), garniture intérieure automobile, boîtiers de dispositifs médicaux.
Expandable PS (EPS)Foam-like, léger (densité: 0.015–0.04 g/cm³), excellent insulation.​Conditionnement (protective inserts for electronics), disposable food containers, construction insulation.​
Styrene-Acrylonitrile (SAN)Résistant à la chaleur (jusqu'à 90 ° C), résistant aux produits chimiques, clear.​Emballage alimentaire (coffee cups), conteneurs cosmétiques, composants de dispositifs médicaux.

Conseils de sélection des matériaux

  1. Prioritize clarity: For visible packaging (Par exemple, packs de cloques), choose GPPS or SAN.​
  1. Need toughness?: Opt for HIPS (ideal for parts prone to drops, like toy cars or appliance handles).​

Adopter la durabilité: Notre recycled PS (rPS) is made from post-consumer waste (Par exemple, old packaging) and retains 85% of the performance of virgin PS—perfect for eco-friendly brands.

Traitement de surface: Enhancing PS Parts’ Aesthetics & Fonctionnalité

PS’s natural surface is smooth (especially GPPS) but can be modified to improve grip, marque, ou durabilité. We offer five core surface treatments tailored to PS’s properties:​

TraitementProcéderAvantages
Finition de surfacePolissage (for GPPS to boost clarity) ou sablage (for matte finishes).​Améliore l'esthétique (clear parts look more premium) or reduces glare (Par exemple, electronic casings).​
TexturationAjout de modèles (à côte, dotted, ou doux-toucher) to the mold surface.​Améliore l'adhérence (Par exemple, toy handles, Boutons d'appareil) ou cache les empreintes digitales (Par exemple, biens de consommation).​
RevêtementAppliquer une couche mince (Par exemple, acrylique, polyuréthane) to the PS surface.​Boosts scratch resistance (critical for clear packaging) ou protection UV (pièces extérieures).​
PeintureSpray-painting with PS-compatible primers (prevents paint peeling).​Custom colors for branding (Par exemple, pièces de jouets, garniture automobile) or opaque finishes (for HIPS).​
ImpressionDigital printing or screen printing for logos, étiquettes, or instructions.​Clair, durable markings (Par exemple, food packaging expiration dates, medical device labels).​

Avantages: Why Choose PS Injection Molding?

PS injection molding offers a unique blend of cost savings, esthétique, and versatility—making it a top choice for manufacturers across industries.​

Key Advantages of PS Injection Molding​

  • Rentabilité: 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 (Par exemple, bonbons, électronique).​
  • Personnalisation: Molds can create complex shapes (Par exemple, intricate toy parts, custom packaging), and PS accepts additives for color, Résistance aux UV, or toughness.​
  • Léger: PS’s density (1.04–1,06 g / cm³) est 50% less than glass and 30% less than ABS—reducing shipping costs and improving user comfort (Par exemple, lightweight toy parts).​
  • Ease of processing: PS melts at low temperatures (saves energy) 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)​

MatérielCoût (par kg)​Light Transmittance​Force d'impact (KJ /)​Mieux pour
GPP​1.20–1.80​90%​1.5–2.5​Low-cost clear packaging, toys.​
Acrylique (PMMA)​2.50–3.50​92%​2.0–3.0​High-end clear parts (Par exemple, vitrines).​
ANIMAL DE COMPAGNIE​1.80–2.50​88%​5.0–7.0​Durable clear packaging (Par exemple, bouteilles d'eau).​

Industrie des applications: 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:​

IndustrieCommon PS Parts​Nos solutions
ConditionnementBlister packs, récipients de nourriture, protective inserts (EPS), cosmetic jars.​GPPS for clear packaging; EPS for shock-absorbent inserts; FDA-compliant grades for food contact.​
Produits de consommationPièces de jouets, appliance handles (LES HANCHES), télécommande, disposable cutlery.​HIPS for impact-resistant parts; GPPS for colorful, clear toy components; custom tooling for unique shapes.​
Dispositifs médicauxDisposable syringes (SAN), tubes à essai, logements d'appareil (LES HANCHES).​Sterilizable PS grades; ISO 13485-certified processes; precision molding for small, pièces précises.
AutomobileGarniture intérieure (LES HANCHES), porte-gobelets, panneaux de porte, speaker grilles.​HIPS for impact resistance; UV-stabilized additives for long-term durability; custom colors to match car interiors.​
ÉlectroniqueRemote control casings (GPP), Centres d'ordinateur portable (LES HANCHES), LED diffusers.​Precision molding for tight-fitting parts; flame-retardant additives (meets UL94 standards); textured finishes to hide fingerprints.​

Études de cas: Our PS Injection Molding Success Stories

We’ve helped clients across industries overcome challenges with our PS injection molding services. Below are three standout projects:​

Étude de cas 1: Clear GPPS Blister Packs for a Cosmetics Brand​

  • Défi: A cosmetics brand needed 500,000 blister packs that were clear (to showcase products), faible coût, and durable enough to withstand shipping.​
  • Solution: We used GPPS (90% clarté) 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.​
  • Résultats: Blister packs reduced packaging costs by 20% contre. acrylic alternatives; 99.8% livraison à temps; customer feedback praised the clear visibility of products.​

Étude de cas 2: Impact-Resistant HIPS Toy Parts for a Toy Manufacturer​

  • Défi: A toy company needed 300,000 toy car bodies that were tough (to withstand drops), colorful, et léger.
  • Solution: We used HIPS (force d'impact: 15 KJ /) with color additives and custom tooling for intricate designs (Par exemple, roues, logos). In-line QC checked for cracks and color consistency.​
  • Résultats: Toy parts had 0 breakage in drop tests (from 1.5m); production time reduced by 15% contre. their previous supplier; cost per part lowered by 12%.​

Étude de cas 3: Sterilizable SAN Medical Test Tubes for a Lab Supply Company​

  • Défi: A lab supply company needed 100,000 test tubes that were clear, heat-sterilizable (up to 121°C), and chemical-resistant (to acids/bases).​
  • Solution: We used SAN (résistant à la chaleur, clair) with FDA-compliant additives and precision molding (± 0,005 mm de tolérance) to ensure uniform tube diameter. Post-molding sterilization validation was conducted.​

Résultats: Test tubes met ISO 13485 normes; 100% passed sterilization tests; livré 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, La technologie Yigu se démarque de notre expertise, qualité, and commitment to client success. Here’s why you should partner with us:​

  1. Compétence: 12+ years specializing in PS injection molding—our engineers know how to optimize processes for PS’s unique traits (Par exemple, preventing yellowing in GPPS, boosting impact strength in HIPS).​
  1. Assurance qualité: OIN 9001 et ISO 13485 certifications; 99.7% taux sans défaut; 100% inspection pour les pièces critiques (Par exemple, medical test tubes, emballage alimentaire).​
  1. Service client: Gestionnaires de compte dédiés qui travaillent avec vous de la conception à la livraison; Consultations de conception gratuites (to optimize your part for PS molding); 24/7 Support aux commandes urgentes.
  1. Innovation: Nous investissons 7% de revenus en r&D—recent breakthroughs include bio-based PS (made from plant-based styrene) and high-clarity rPS (recycled PS with 88% transmittance légère).​

Durabilité: 40% of our PS materials are recycled (rPS); our factories use energy-efficient machines (réduire les émissions de carbone par 28%); we offer a take-back program for old PS parts to recycle into new products.

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