China Plastic Injection Molding  
China Plastic Injection Molding: Company Introduction Benefits of China Plastic Manufacture Why Chinese Plastic Products are Cheaper Tooling for Injection Molds Quotes for China Plastic Production Custom Plastic Manufacturing FAQ Plastic Parts from China - Contacts
China Plastic Injection Molding

Molding Specialties
Rapid Tooling
Export Tooling
High Precision
Blow Molding
Co-Injection Tooling
Rubber Molding
Medical Parts
Metal Die Casting
Metal Stamping
Technical Ceramics
Rapid Prototyping
What Some of Our Clients Say...

"First off, I would like to say that it is a pleasure to work with you and Bill of the Titoma organization. You are prime examples of what it takes to make a company a world class end to end manufacturing organization that meets or exceeds needs of its customers. Hats off to you and your owners!"

- Russell Huffman, New Tech Alarms

"I am honored to testify as a satisfied customer. I'm very happy with the work you did during the manufacturing phase, and especially grateful for the attention you gave me during the whole process."

- Edgar Orozco, AVICORVI SA

"We decided to work with Titoma because of their reputation and competitive price. We saved up to 100% higher on NRE (Non Recurring Expenses, i.e. design and molds) and 50% on parts. They delivered full turnkey development with impressive professionalism and quality. We have further products lined up for the coming year, and we will look forward to working with Titoma again."

- Michael Jones, Nigami Enterprises

"I recommend Titoma as an excellent partner for die-casted and injection molded parts. During the whole process we had very fast communication, and Titoma offered many useful suggestions on how to improve our mechanical design to avoid problems. The resulting parts were beautiful with a nice finish, and they managed to achieve the tight tolerances we required."

- Jacek Rydzewski, Grupa Techniczna

"We used to buy our custom made keyboards directly from a factory in Taiwan. Unfortunately, working with them turned out to be a major headache--endless shipping delays, which cost us a lot of customers. Two years ago, we asked Titoma to select and manage a new factory. Having a team on the ground that really understands quality and is able to make decisions on the spot saved us a lot of time and hassle."

- Henk Smit, BNC Distribution


High Quality Low Cost Blow Molding in China

Blow molding is a primary method for forming hollow plastic objects such as soda bottles. The process includes clamping the ends of a softened polymer tube which can be either extruded or reheated, inflating the polymer against the mold walls with a blow pin, and then cooling the product via conduction or evaporation of volatile fluids in the container.

There are three general types of blow molding:

  • Extrusion blow molding

    Extrusion blow molding is usually used to make items of weight greater than 12 oz. such as containers for food, laundry, or waste.

    This process normally uses commodity materials such as PVC, PS, PP, LDPE, and HDPE. 

    Important factors one should consider for extrusion blow molding include the following:

    • Polymer viscosity at high & low shear rates
    • Melt strength (important for uniform wall thickness, no holes)
    • Strain recovery (MW & Distribution)
    • Crystallization rate (slow rate desired)
    • Thermal properties (thermal diffusitivity, thermal conductivity, specific heat, etc.)

  • Injection blow molding

    Injection blow molding is used to achieve very accurate wall thickness, high-quality neck finish, and to process polymers that cannot be extruded. Usual applications include pharmaceutical bottles, cosmetic packaging, and single serving liquor bottles that weigh less than 12 oz.

    These factors are critical to this process:

    • Shear & temperature dependent viscosity
    • Temperature-dependent tensile strength on the pin
    • Tensile elongation during inflation
    • Crystallization kinetics on the core pin
    • Crystallization kinetics during blowing and cooling
    • Stretch blow molding Stretch blow molding is generally only used for difficult to blow crystalline and crystallizable polymers such as polypropylene and polyethylene terephthalate.

    Important polymer properties to be considered:

    • Tensile strenth and yield above Tg
    • Effect of orientation on gas permeability through the polymer

    Please contact us at the Titoma Group for more information, a quick quote, or other inquiries.




    Rapid Tooling, Tooling for Export Molds, High Precision Tooling, Automotive Parts, Blow Molding, Co-injection Tooling, Rubber Molding, Medical Parts, Metal Die Casting, Metal Stamping, Technical Ceramics, Rapid Prototyping