plastic injection hook moulding

In addition, our company has established cooperative relationships with plastic raw material suppliers, printing manufacturers, etc. to ensure the supply of raw materials and printing quality. Through our rich experience and perfect supply chain, our company can provide customers with high-quality customized plastic injection hook moulding products to meet their specific needs. At the same time, we have 10 years of professional foreign trade service experience, understand the foreign trade process, and better serve our customers. For plastic injection hook moulding products, we can make corresponding plastic parts, which is mainly done through injection molds.

Micro injection molding of PEEK (polyetheretherketone) needs to break through the three major technical barriers of microgram-level precision control, high temperature stability, and biocompatibility. The core points are systematically analyzed as follows:

1. Material science breakthrough (medical-grade PEEK 2025 upgraded version)

Melt index, 45g/10min (343℃/5kg), ±0.5g/10min control accuracy

Glass transition temperature, 143℃, crystallinity control ±3%

Nano-enhancer, hydroxyapatite (20nm,) addition amount 8wt%±0.2%

Sterilization tolerance, gamma irradiation 500kGy, yellowing index ΔYI<0.8

2. Micro mold system design (micron-level precision guarantee)

1. Core technology innovation

graph TB

A[mold flow analysis] --> B(predict microcavity filling behavior)

B --> C[in-mold sensing]

C --> D[nano coating]

D --> E[Vacuum adsorption ejection]

Microchannel design:

Hot runner needle valve diameter Φ0.3mm (surface Ra≤0.05μm)

Shear rate control 10⁴-10⁵ s⁻¹ (anti-degradation)

Temperature control system:

Nano heating rod (response time 0.1s)

Mold temperature 200℃±0.5℃ (PEEK crystallization optimization window)

III. Ultra-precision process control (zero defect core)

1. Process parameter matrix

Melt temperature, 380-400℃±1℃ Infrared spectrum online analysis, viscosity fluctuation ±15% for every 5℃ deviation

Injection speed, 300-500mm/s±2%, magnetic suspension linear encoder, underfilling risk ↑90%

Pressing pressure, 180-220MPa±0.3MPa Nano piezoelectric sensor, micro-shrinkage porosity ↑300%

Vacuum degree, ≤5mbar Real-time feedback of cavity pressure, bubble diameter＞10μm

2. Anti-degradation technology

Nitrogen protection: barrel oxygen content <50ppm

Residence time: ≤90 seconds (380℃ thermal history)

Screw design: low shear geometry (L/D=18:1, compression ratio 1.8)

IV. Quality and biocompatibility assurance

1. Zero defect detection system

Dimensional accuracy, white light interferometer, ±0.5μm ISO 1101:2025

Internal defects, microfocus CT, 2μm resolution, ASTM F3338-25

Surface biofilm, atomic force microscopy, nanoscale roughness analysis, ISO 13779-3:2025

2. Biosafety certification

Cytotoxicity: MTT method detects survival rate >95%

Long-term implantation: accelerated aging simulation for 15 years (82℃/30 days equivalent)

V. Risk Control List

Phenol release, ≤0.1μg/cm², supercritical CO₂ devolatilization process

Uneven crystallization, crystallinity difference >8%, multi-stage annealing procedure

Metal ion contamination, Fe²⁺≤0.02ppm, ceramic coated screw barrel

The PEEK micro-injection molding process needs to break through the three major technical bottlenecks of high-temperature precision control, microgram-level filling, and biocompatibility. The full process is analyzed as follows:

1. Material pretreatment (zero degradation premise)

1. Supercritical drying process

Parameters:

Temperature 120℃±2℃ | Dew point -45℃ | Time 6h

Water content: ≤0.008% (0.02% is allowed for ordinary PEEK)

Nano-enhancer dispersion:

Hydroxyapatite (20nm) ultrasonic oscillation 30min (energy density 5kW/m³)

Today's technical dynamics: Evonik releases medical-grade PEEK VESTAKEEP® iC4612 (ΔYI < 0.5 after gamma irradiation)

2. Micro-mold system (micron-level precision)

1. Core design specifications

graph LR

A[mold flow simulation] --> B(predict crystallization behavior)

B --> C[vacuum adsorption flow channel]

C --> D[nano-heating temperature control]

D --> E[Ceramic coating]

Microchannel design:

Hot runner needle valve diameter Φ0.25mm (surface Ra≤0.03μm)

Shear rate control: 1.5×10⁵ s⁻¹±5% (anti-melt fracture)

Temperature control innovation:

Mold temperature 200℃±0.3℃ | Partition temperature difference ≤0.5℃

Response speed: 0.08s (nano film heater)

III. Injection molding process window (zero defect core)

1. Fifth-order precision control

Plasticization, 380℃±1℃ Infrared spectrometer, viscosity fluctuation ±12%→underfilling

Injection, 450mm/s±1%, magnetic suspension encoder, flow mark probability↑85%

Pressure holding, 200MPa±0.2MPa, piezoelectric crystal sensor, shrinkage rate>3%

Cooling, gradient cooling 60℃/min, optical fiber temperature array, crystallinity difference>7%

Mold release, vacuum adsorption force 0.08MPa, piezoresistive micro-force sensor, deformation ≥2μm

micro injection moulding peek

We are a micro injection moulding peek manufacturer, providing high-quality micro injection moulding peek manufacturing. As long as you want to customize/develop micro injection moulding peek products, you can find us. We have professional injection mold design and mature manufacturing technology, providing you with one-stop service, from product design-mold making-product production-product packaging-product transportation, we can help you in every link. As long as you come to us, we will provide you with the ultimate service and satisfy you in terms of product quality, production time, information dialogue, etc.