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Plastic Auto Parts Injection Molding

Plastic Auto Parts Injection Molding

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Mold Making & Plastic Injection One-stop Service

Yuyao Hualong Moulds & Plastic Products Co.,Ltd.

Yuyao Hualong Moulds & Plastic Products Co.,Ltd. was established in 1988. At present, there are 15 plastic injection molding machines from 100g to 3500 g, more than 20 mold manufacturing equipment such as machining centers, and more than 20 testing equipment and other auxiliary equipment. As leading Plastic Injection Molded Auto Parts manufacturers and Auto Parts factory in China, We have 100 employees and more than 30 managers and professional technicians.

After over 30 years of indomitable efforts, with the molds-making and plastic products-processing as the mainstay, our company has implemented a service for product development, mold-designing and making, plastic injection-molding and finished product-assembly in a coordinated process. Hualong mold has long history of serving European and American high-quality brands and well-known public companies at domestic and abroad. We custom make injection molded Plastic Auto Parts. Customized products involve all kinds of instruments, equipment accessories, industrial automation and intelligent equipment of the Internet of things, auto accessories, kitchen appliances, household products, etc. Products are widely used in power, communications, security, automotive, aerospace, medical, life and other different fields.

We have gained certifications of ISO9001, ISO16949 quality management system and ISO14001 environmental management system. OEM/ODM plastic injection molded Auto Parts. We accept annual factory inspection of clients, and conduct ECOVADIS audits on environment, labor and human rights, business ethics and sustainable procurement.

Customized Service Custom Advantage

Custom Process

  • Drawings or Samples

    We get the drawings or samples from customers.

  • Drawings Confirmation

    We will draw the 3D drawings according to the customers' 2D drawings or samples,and send the 3D drawings to customers for confirmation.

  • Quotation

    We will quote after getting the customers' confirmation,or quote directly according to customers' 3D drawings.

  • Making Molds/Patterns

    We will make molds or pattens after getting the mold orders from the customers.

  • Making Samples

    We will make real samples using the molds and send to customers for confirmation.

  • Mass Producing

    We will produce the products after getting the customers' confirmation and orders.

  • Inspection

    We will inspect the products by our inspectors or ask the customers to inspect together with us when finished.

  • Shipment

    We will ship the goods to the customers after getting the inspection result ok and the customers' confirmation.

Every certificate witnesses our profession

HualongCertification

  • ISO45001
  • ISO14001 Environmental Management System Certification
  • IATF16949 Automotive Industry Quality Certification
  • ISO9001 Quality Management System Certification
  • Sustainability Rating
  • POM F20-02 ROHS SGS Report

Develop customized mold products according to customer requirements

Comprehensive analysis of projects, high degree of cooperation with customers, strong timeliness, good follow-up service and stable production.

Learn about customization
Auto Parts Industry knowledge

After more than 30 years of unremitting efforts, our company has developed into an enterprise dominated by mold manufacturing and plastic product processing, especially in the field of Plastic Auto Parts. We have accumulated rich experience. We focus on providing one-stop services from product development, mold design and manufacturing, plastic injection molding to finished product assembly. With excellent technical strength and rich industry experience, we have long served high-quality European and American brands and well-known listed companies at home and abroad, and provided a large number of high-quality Plastic Auto Parts for the automotive industry.
Polypropylene is an excellent thermoplastic plastic with wide application in the manufacture of Plastic Auto Parts. It is usually a translucent, semi-crystalline material with high strength and excellent insulation performance. It is also popular for its low water absorption, high thermoforming temperature, low density and high crystallinity. Plastic Auto Parts made of PP material have the advantages of light weight, corrosion resistance, easy processing and molding, which meet the requirements of modern automobiles for lightweight and high performance.
Injection molding is one of the commonly used processes in the manufacture of Plastic Auto Parts. It injects molten plastic material into a precisely designed mold, and then cools and solidifies it in the mold to form a plastic product of the desired shape and size. The injection molding process mainly includes the stages of mold closing, filling, pressure holding, cooling, mold opening and demolding, which are important for ensuring the dimensional accuracy, surface quality and performance of plastic automotive parts.
During the injection molding process, we need to strictly control parameters such as barrel temperature, injection pressure, injection speed, etc. to ensure the quality of plastic automotive parts. At the same time, mold design is also a key link in the injection molding process. Reasonable mold structure design and gating system design can significantly improve the production efficiency and product quality of plastic automotive parts.
The injection molding of PP plastic automotive parts requires strict control of barrel temperature. Usually, the barrel temperature is controlled in the range of 210~280℃ to ensure the fluidity and plasticization effect of the molten material. Appropriate injection pressure is essential to ensure the dimensional accuracy and surface quality of plastic automotive parts. For PP materials, the injection pressure is usually set between 70~100MPa to ensure that the molten material can fill the mold smoothly.
The choice of injection speed has a great influence on the molding effect of plastic automotive parts. For thin-walled or complex-structured plastic automotive parts, a higher injection speed is required to ensure that the molten material can quickly fill the mold. Mold design is a key link in the injection molding process. Reasonable mold structure design and pouring system design can significantly improve the production efficiency and product quality of Plastic Auto Parts. At the same time, the selection of mold materials is also crucial. It is necessary to select mold materials with high wear resistance, high hardness and high thermal stability.
PP Plastic Auto Parts are light in weight, which helps to reduce the weight of the whole vehicle, improve fuel economy and reduce emissions. PP has good chemical stability and can resist the erosion of various chemicals, extending the service life of Plastic Auto Parts. PP has good fluidity and is easy to injection mold, and can produce Plastic Auto Parts with complex shapes and precise dimensions. PP material has a high recycling rate of up to 100%, which meets environmental protection requirements and is conducive to promoting the sustainable development of the automotive industry.
The PP Plastic Auto Parts we produce have been widely used in the automotive manufacturing industry. These parts are mainly used for automotive interior parts, exterior parts and function keys, such as dashboards, door panels, bumpers, seat frames, etc. Among them, interior parts account for as much as 55%. Our Plastic Auto Parts meet the requirements of modern cars for lightweight, corrosion resistance, easy processing and molding.

FAQ
  • Where are your products mainly exported to?
    Our products are mainly exported to the United States, Canada, the Netherlands, France, Italy, the United Kingdom, South Korea, and other dozens of countries.
  • How to deliver the goods to us?
    Foreign customers usually ship by sea. We are only 80 kilometers away from Ningbo Port, so it is very convenient to export by sea. Of course, if the customer's goods are urgent, we can also ship by air. Ningbo Airport and Shanghai International Airport are very close to us.
    Domestic customers, we have our own van and driver to arrange delivery.
  • How many employees of your comany? What about the technicists?
    The company has more than 100 employees, including more than 30 managers and professional and technical personnel.
  • How about the capacity of your company?
    The company covers an area of 9,000 square meters, with a modern workshop of more than 8,000 square meters. We currently have thirteen plastic injection molding machines ranging from 100 grams to 3500 grams, and more than ten mold manufacturing equipment such as machining centers, with an annual production capacity of 80 million yuan.
  • Do you have some standard parts?
    No, we are a pure custom manufacturer.
  • Can you do customized products?
    Yes, we mainly do customized products,we are mainly doing customized products according to the customers’ drawings or samples.
  • What applications do your products relate to?
    Our products cover almost every aspect of your life. Products have been involved in instrumentation, auto parts, medical equipment, smart equipment, audio-visual office supplies, fitness equipment, small kitchen appliances and many other industries.
  • What products can you offer?
    We mainly accept the customization of injection molds and the production of corresponding products.
  • Are you a direct manufacturer or a trading company?
    We are a professional manufacturer of customized injection molds and injection products. We also accept orders from domestic and foreign customers and have the right to export independently.
  • How to guarantee the quality of your goods?

    Firstly,we will do the inspection after every process.for the finished products,we will do 100% inspection according to the customers’ requirements and the international standard.

    Then, we have the more advanced and complete testing equipment in the industry: color detectors, three-coordinate measuring instruments, 3d scanners, etc. To ensure that the customer's all-round testing requirements for product color, high-precision geometric size testing, etc. are met.

    In addition, we have a professional team to do a complete technical analysis in advance. According to the needs of different materials, shapes and performances of the products, we will make corresponding molds or increase the necessary technological processes such as cooling and boiling to ensure that the product performance and shape meet the requirements of customers and reduce follow-up troubles.

  • What’s the payment term?
    When we quote for you,we will confirm with you the way of transaction,fob,cif,cnf,etc.
    For mass production goods, you need to pay 30% deposit before producing and70% balance against copy of documents. the more common way is by t/t. l/c is also acceptable.
  • How long can I get the feedbacks after we sent the inquiry? 
    We will reply you within 12 hours in working day.