PET Injection Mould
Your Professional PET Injection Mould Supplier
Taizhou Guyou Mould and Plastic Co., Ltd. is a company with several years of experience in plastic custom injection molding and tooling manufacturing. Established in 2006 and located in Huangyan, Taizhou City—known as the "Mould Town of China"—we specialize in high-quality plastic molds.
Our main products include plastic household molds, automobile molds, gas-assisted injection molds, plastic thermosetting molds, industrial product molds, and more.
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![PET Injection Molding For Household Products]()
PET Injection Molding For Household ProductsPET plastic injection molding process full analysis:read more
Why Choose Us
Quality Assurance
We adhere to high quality standards with detailed mold specifications and special requirements, allowing us to provide customers with comprehensive solutions for their injection molding needs.
Comprehensive Solutions
We have expertise in product development, mold design, raw material selection, process optimization, production management, quality control, customer service, and international logistics—offering a full range of services for injection molding projects.
Professional Team
With years of manufacturing experience, we have built an excellent team and established a comprehensive system to meet the diverse needs of our customers.
OEM/ODM Service
Both OEM and ODM services are available. Styles can be customized, and we will advise on the minimum order quantity after discussion.
Specification
|
We promise |
All customer-centric, never for short-term profit, and sell long-term benefits |
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We produce |
Mold, prototype, injection molding, product assembly, surface printing, spraying the surface integration |
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Pls provide |
2D, 3D, samples, or the size of the multi-angle pictures |
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Mould Time |
20-35 Days |
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Product time |
7-15 Days |
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Moud precision |
+/-0.01mm |
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Mould life |
50-100 million shots |
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Producing Process |
Audit drawings - mold flow analysis - design validation - Custom Materials - mold processing - core processing - electrodemachining - Runner system processing - parts processing and procurement - machining acceptance - cavity surface treatment process - complex mode Die - The entire mold surface coating - Mounting plate - mold sample - sample test - sending samples |
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Mould cavity |
One cavity, multi-cavity or same different products be made together |
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Mould material |
P20,2738,2344,718,S136,8407,NAK80,SKD61,H13 |
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Runner system |
Hot runner and cold runner |
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Base material |
P20,2738,2344,718,S136,8407,NAK80,SKD61,H13 |
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Finish |
Pitting the word, mirror finish, matte surface, striae |
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Standard |
HASCO, DME or dependent upon |
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Main thechnology |
Milling, grinding, CNC, EDM, wire cutting, carving, EDM, lathes, surface Finish, etc. |
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Software |
CAD,PRO-E,UG Design Time: 1-3 days (normal circumstances) |
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Product material |
ABS,PP,PC,PA6,PA66,TPU,POM,PBT,PVC,HIPS,TPE,PC/ABS, TPV, TPO,T PR,EVA,HDPE,LDPE,CPVC,PVDF,PPSU. |
Chemical And Physical Characteristics
PET has many chemical and physical characteristics that make it suitable for creating high-quality product parts. Here are some of the PET’s unique properties in detail.
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Property |
Value/Description |
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Chemical Formula |
(C₁₀H₈O₄)n |
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Monomer |
Ethylene terephthalate |
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Polymerization |
Condensation polymerization |
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Molecular Weight |
30,000 – 80,000 g/mol |
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Crystallinity |
Semi-crystalline (20-40% achievable) |
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Density Amorphous |
1.33 – 1.37 g/cm³ |
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Density Crystalline |
1.45 – 1.51 g/cm³ |
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Glass Transition Temperature |
69 – 115°C |
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Melting Temperature (Tm) |
250 – 260°C |
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Thermal Decomposition |
Begins around 340°C |
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Specific Heat Capacity |
1.0 – 1.2 kJ/(kg·K) |
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Thermal Conductivity |
0.15 – 0.40 W/(m·K) |
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Moisture Absorption |
0.1 – 0.2% |
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Thermal Expansion |
60 – 80 × 10⁻⁶/K |
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Oxygen Permeability |
0 – 40 cm³·mm / (m²·day·atm) |
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CO₂ Permeability |
100 – 130 cm³·mm / (m²·day·atm) |
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Volume Resistivity |
10¹⁵ – 10¹⁶ Ω·cm |
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Surface Resistivity |
10¹³ – 10¹⁶ Ω/sq |
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Chemical Resistance |
Acids, alcohols, oils, and some solvents |
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Refractive Index |
1.57 – 1.58 |
Polyethylene Terephthalate (PET) injection molding offers numerous advantages that make it a preferred manufacturing process for producing high-quality plastic components.
Cost Effective
PET’s lightweight nature reduces material and transportation costs, making it an economical and cost-effective choice for high-volume production such as packaging applications.
Additionally, its excellent wear resistance and low moisture absorption contribute to durable, high-quality parts that minimize waste and rework.
The use of PET resin pellets optimized for injection molding ensures efficient processing in the molding machine’s cylinder, further enhancing production efficiency and reducing cycle times.
Versatility In Applications
The ability to mold PET into precise and complex shapes allows its use across diverse industries, from packaging and food industry applications to automotive components, meeting varied design and performance requirements.
PET injection molding is well suited for producing high-precision parts with excellent dimensional stability and durability, making it a reliable choice for manufacturers.
Its versatility extends to creating pet preforms, beverage bottles, and other consumer goods, highlighting its importance in packaging applications.
This adaptability, combined with PET’s good chemical resistance and low moisture absorption, enables it to perform effectively in demanding environments across multiple sectors.
Efficient Production
PET injection molding supports high-speed production with short cycle times, enabling manufacturers to achieve high output while maintaining consistent quality.
This efficiency is driven by the material’s low moisture absorption and excellent flow characteristics during the injection molding process, which reduce defects and minimize downtime.
What Are the Process Conditions for PET Injection Molding?
Material Preparation
Drying Temperature: 160–180°C
Drying Time: 4–6 hours
Moisture Content Requirement: ≤0.005%
PET is highly hygroscopic. Residual moisture can cause hydrolysis, bubbles, silver streaks, and reduced strength during molding.
Injection Molding Machine Requirements
PET requires high-temperature, high-speed injection. Machines should have enhanced plasticizing capability.
Use PET-specific screws or modified general-purpose screws.
The compression ratio should be 2.8–3.5.
Mold Design Considerations
Runners: Short and smooth, avoiding sharp bends or dead zones.
Surface Finish: Runners, gates, and cavities must be polished to prevent flow marks.
Hot Runner Systems: Recommended for efficiency, especially in bottle preform molding.
Other Key Considerations
Mold Temperature: Ensure adequate mold temperature to compensate for PET’s low melt viscosity and rapid cooling.
Barrel Residence Time: Avoid prolonged exposure of PET to high barrel temperatures to prevent thermal degradation and acetaldehyde generation.
FAQ
We're professional pet injection mould manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy pet injection mould in stock here from our factory. For price consultation, contact us.