4 Cavity Pet Preform Mould

Name: 4 Cavity Pet Preform Mould
Brand: HANKE
SKU: 92690814

If you have a preform mold design in mind, we can help you solve all production line-related issues. Our team of experts has extensive experience in preform mold production and can provide you with comprehensive solutions to help streamline your production process. We offer tailored design and engineering services to ensure your preform mold meets your exact specifications. With our advanced production capabilities, we can manufacture and deliver your preform mold quickly and efficiently. Whether you need assistance with preform mold design, production, or optimization, our team is committed to helping you succeed. Contact us today to learn more about our preform mold services and how we can help you achieve your business goals

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Product Introduction

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Your Leading 4 Cavity Pet Preform Mould Supplier

HANKE has been working for over 10 years in the field of "PET PACKAGING", Since its establishment, it has been focusing on the design of PET bottle shapes, preforms, and bottle caps and the development and manufacture of corresponding molds. We have extensive experience in the production of molds and equipment for preform and bottle production for our customers.

Wide Range of Applications

Widely used in beverages, food, edible oil, condiments, candy, cosmetics, detergents, medical supplies, and other fields.

Quality Assurance

There is very strict analysis and quality control from the 3D drawing of the mold to the first tryout of the mold.

Wide Range of Cooperative Countries

We have a full understanding of the export standards, transportation conditions, and requirements of the cooperative countries.

24H Online Service

Our customer service representatives are available 24/7 to assist you with any inquiries, technical issues, or after-sales services.

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What Is 4 Cavity Pet Preform Mould?

A 4-cavity PET preform mould is a type of mold used in the manufacturing process of PET (polyethylene terephthalate) preforms. The 4-cavity refers to the number of cavities or impressions within the mold. This means that the mold can produce four preforms simultaneously in each molding cycle. PET preforms are small plastic containers that are later blown into bottles or containers using a blow molding machine.

Parameter

Quick Details

Place of Origin:Zhejiang, China

Brand Name:HANKE

Model Number:4 CAVITY 5 GALLON PREFORM MOULD

Shaping Mode:Plastic Injection Mould

Product Material:Steel

Product:PACKING PRODUCTS

Name:4 CAVITY 5 GALLON PREFORM MOULD

Material:Mold core,cavity and neck srew are made of S136 material

Supply Ability:150 Set/Sets per Year

Packaging Details:Wooden box

Port:Ningbo/Shanghai

Lead Time:Shipped in 45 days after payment

Specification for PET Preform mould

1. Needle Valve of No-Cutting PET Preform Moulds

2. The number of PET preform mould cavities is up to 72 cavities for standard neck finishes, such as PCO1881, PCO1810, and 30. The cam roller design for the thread splits helps operator maintenance freely.

3. Individual Valve-Gate unit with balanced hot runner system.

4. The PET preform moulds use Dual Tapers design for Lock

5. PET preform mould materials: Mould cavity, core, neck: Germany S136

Product Name

Different volumes with different weights edible oil PET preform mould

Core &Cavity Steel

2316#steel, S136 stainless steel or based on customer's requirement.

Mould base & Standard Component

DME,HASCO,MISUMI,LKM,Self-made with P20, 3CR13, 4CR13 material etc.

Steel hardness

HRC30-35 for base material.
HRC45-48 for core and cavity material.
HRC60-62 for special parts material

Plastic material

PET, PP, ABS, PC, AS, TRITAN etc.

Cavity Number

1*4, 1*6, 1*8, 1*12, 1*16, 1*24, 1*32, 1*48 etc

Injection System

Pnuematic Valve gate with shut off&free-cut or short tail or long tail etc

Ejector System

Mould slider + Stripper plate ejection

Cycle Time

Based on PET preform thickness

Tooling lead time

30-60 Days

Mould life

At least 2.0million Shots

Quality assurance

ISO9001:2008/ CE certificate for European customers

Advantages of 4 Cavity Pet Preform Mould

Product Quality is Stable

Pet preform mold uses high-precision processing technology and materials to ensure product consistency and accuracy. In addition, the multi-cavity design can ensure that the shape, size, and weight of each product are the same.

High Productivity

Pet preform mold has a multi-cavity design, and one injection molding cycle can complete the production of multiple products at the same time, greatly improving production efficiency.

Long Life

The mold cavities are all made of high-quality mold steel, and the mold guide posts and bushings adopt oil-free lubrication, which has the strong advantage of being pollution-free and having a service life of tens of millions of times.

Specially Designed Blade

The unscrewing ring blade adopts a split structure, which allows the blade to be positioned accurately, perfectly overcoming the defects of inferior products such as poor overall blade positioning accuracy and easy damage.

Saving Cost

Pet preform mold adopts a multi-cavity design. One injection molding cycle can complete the production of multiple products. Compared with a single-cavity design, the cost of a single product in each production cycle is lower, which greatly reduces production costs.

Environmentally Friendly

The products produced by pet preform mold have accurate dimensions, stable quality, and low product scrap rate, which greatly reduces the waste of raw materials and resources.

4 Cavity Pet Preform Mould: Everything You Need to Know!

The use of a 4-cavity mould increases production efficiency, as more preforms can be made in a shorter period. The mold is typically made of high-quality steel and undergoes precision machining to ensure accurate and consistent preform production.

4 Cavity Pet Preform Mould Process

Design

The first step is to design the mould according to the required specifications and dimensions. This involves creating a 3D model of the mould using computer-aided design software.

Material Selection

PET is commonly used for making preforms. The material selection is based on factors such as the desired strength, transparency, and heat resistance of the final product.

Mould Fabrication

Once the design is finalized, the mould is fabricated using CNC machines or other machining tools. The mould typically consists of two halves, which are precision machined to create the desired shape.

Preform Injection

The mould is then installed in an injection moulding machine. PET resin pellets are heated and melted inside the machine, and the molten material is injected into the mould cavities under high pressure.

Cooling

After the injection, the mould is cooled down to solidify the molten PET material and form the preforms. Proper cooling is important to ensure that the preforms have the desired shape, dimensions, and physical properties.

Ejection

Once the preforms are properly cooled, the mould is opened, and the preforms are ejected from the mould cavities. Ejector pins or plates are used to push the preforms out of the mould.

Trimming And Finishing

The ejected preforms may have excess material or flash that needs to be trimmed off. This can be done manually or with the help of automated trimming equipment.

Packaging

The final step involves packaging the preforms for transportation or further processing. They are usually packed in plastic bags or containers to protect them from damage.

Our Service

Pre-sales:

1. Providing detailed product information and technical specifications.

2. Assisting customers in choosing the most suitable preform mould based on their specific requirements.

3. Offering professional advice on production processes and solutions.

4. Providing samples for testing and evaluation.

In-sales:

1. Ensuring timely delivery of the preform mould and related products.

2. Assisting with installation and commissioning of the mould.

3. Providing training on mold operation and maintenance.

4. Regularly updating customers on the progress of their orders.

5. Offering customization options to meet individual needs.

After-sales:

1. Providing technical support and troubleshooting assistance.

2. Offering spare parts for replacement or repair.

3. Listening to customer feedback and suggestions continuously, improve our products and services. Resolving any issues or concerns promptly and efficiently.

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FAQ

Q: What is a cavity in a mould?

A: A mold is a hollow form typically made from stainless steel that has plastic injected into it to manufacture a plastic part. The plastic is inserted into the mold cavity, which is a hole in the mold shaped like the desired part.

Q: What is PET preform mold?

A: It is normally manufactured using a mould on an injection system, which is subsequently blown into a container for edible or non-edible liquids (water, soft drinks, milk, alcohol, oils, detergents, personal care) on a blow moulding system.

Q: What is the core and cavity material in mould?

A: The core and cavity will usually be made of either P20, En 30B, S7, H13, or 420SS grade steel. The core is the male part which forms the internal shape of molding. The cavity is the female part which forms the external shape of molding.

Q: How many cavities does a mould have?

A: A mould can have multiple cavities. The number of cavities in a mould depends on the specific design and purpose of the mould. It can range from a single cavity to several cavities, depending on the desired production volume and requirements of the product being manufactured. The number of cavities can be from 1 to a reported maximum of 216.

Q: Can preform moulds be used for different types of products?

A: Yes, preform moulds can be used for different types of products. The design and specifications of the preform mold can be customized to accommodate the specific shape, size, and material of the final product. This enables preform molds to be used in a variety of applications, including bottles, containers, jars, caps, and other plastic or glass products. The mold cavities can be adjusted or modified to suit the desired product design and production requirements.

Q: Can preform moulds be repaired if they get damaged?

A: Yes, preform moulds can be repaired if they get damaged. The extent and feasibility of the repair depend on the nature and severity of the damage. Common repair methods include cleaning and maintenance, surface repairs such as polishing or sanding, welding or patching for cracks or breaks, and component replacement. However, severe or extensively damaged molds may need to be replaced entirely.

Q: Are there any safety precautions to consider when using preform moulds?

A: When using preform moulds, it is important to follow safety precautions to protect against potential hazards. This includes wearing appropriate personal protective equipment such as gloves and safety glasses. Additionally, ensure that the machine is properly maintained and be cautious of moving parts. Preform molds involve high-temperature processes, so it is crucial to use proper insulation, heat-resistant gloves, and tools to avoid burns or scalds. Some mold-making materials or processes may involve chemicals, so follow safety instructions and use proper ventilation and protective gear.

Q: What is a single cavity or double cavity mould?

A: The Difference Between Single-Cavity and Multi-Cavity Molds
The difference between these molds is fairly straightforward. Single-cavity molds produce a single product per cycle because it only have one cavity into which plastic resins can be injected. In contrast, multi-cavity molds have multiple cavities, enabling you to produce multiple parts in a single cycle. Because a multi-cavity mold is larger than a single-cavity mold, it has a higher initial investment cost. However, this cost can often be offset by a lower per-unit molding cost.

Q: What is the process of cavity molding?

A: The first step is clamping, or pushing the mold's two clamshell-like halves together. Next is an injection, in which plastic is melted down and inserted into the mold. Dwelling and cooling, which allow the plastic to fill the mold and solidify, follow. Finally, the mold opens, and ejector pins remove the part.

Q: Can preform moulds be customized to specific product designs?

A: Preform molds can be customized to specific product designs. Preform molds are designed to shape plastic materials into specific forms, so they can be tailored to meet the exact specifications and requirements of a particular product design. This customization can involve various aspects such as the shape, size, weight, and features of the preform. Design modifications can be made to accommodate different bottle designs, neck finishes, wall thicknesses, and other specific requirements.

Q: Can preform moulds be used for multi-cavity production?

A: Yes, preform moulds can be used for multi-cavity production. Multi-cavity molds are designed to have multiple cavities within a single mold, allowing for the production of multiple preforms simultaneously.
Using multi-cavity molds increases production efficiency as it enables the production of a higher number of preforms in each molding cycle. This can significantly increase the overall output and productivity of the manufacturing process.
When designing a multi-cavity preform mold, factors such as cavity layout, cooling system, and ejection system need to be carefully considered. The mold design should ensure uniform cooling and consistent filling of each cavity to produce preforms of consistent quality.

Q: What is a 4 cavity mold?

A: If several parts are produced in one cycle (one shot), the mold is called a multi-cavity mold. For the production of e.g. four identical parts, the short term is a 4 cavity mold. If mirrored parts are produced in one mold, for example, two left and two right side parts, the common name for the mold is 2+2 cavity mold.

Q: Can a 4 cavity PET preform mould be used for high-speed production?

A: Yes, a 4 cavity PET preform mold can be used for high-speed production. The number of cavities in a mold determines the number of preforms that can be produced in each cycle. More cavities in a mold allow for higher production rates as more preforms are manufactured simultaneously.

Q: What are the typical injection pressures used with a 4 cavity PET preform mould?

A: The typical injection pressures used with a 4 cavity PET preform mold can vary depending on several factors, including the design of the mold, machine specifications, and the specific requirements of the preform. However, as a general guideline, the injection pressures for PET preform molding typically range from 800 to 1200 bar (11,600 to 17,400 psi).

Q: Are there any design limitations when using preform molds?

A: There are several design limitations when using preform molds, including part complexity, wall thickness consistency, draft angles, undercuts, and size limitations. Preform molds are better suited for simple and symmetrical parts with uniform wall thickness and appropriate draft angles. Parts with complex shapes, varying wall thicknesses, steep draft angles, undercuts, or large sizes may present challenges in preform molding.

Q: How is the gate design managed in a 4 cavity PET preform mould?

A: To manage the gate design in a 4-cavity PET preform mold, factors such as gate location, size, type, and vestige management need to be considered. The gate should be placed symmetrically to ensure balanced filling of all cavities, and the gate size should be optimized for proper flow and to avoid issues like premature freezing. Different gate types, such as pin gates or tunnel gates, may be used based on the preform design and process requirements. Additionally, managing gate vestige is important to minimize residual plastic at the gate for improved product quality.

Q: Are there any temperature requirements for the material used in a 4 cavity PET preform mould?

A: The material used in a 4-cavity PET preform mold requires specific temperature conditions for optimal production and quality. PET is typically melted and injected into the mold at temperatures between 260°C to 290°C (500°F to 554°F). The mold temperature should be set around 10°C to 20°C (50°F to 68°F) lower than the glass transition temperature of PET. Sufficient cooling time is needed for the preforms to solidify, with the cooling time varying based on design and thickness. The ejection temperature should be slightly higher than the cooling temperature to facilitate smooth ejection.

Q: Can a 4 cavity PET preform mould be used for hot-fill applications?

A: A 4-cavity PET preform mold can be used for hot-fill applications, but specific considerations need to be taken into account. This includes using PET resin with appropriate heat resistance properties, optimizing the mold design and cooling system for efficient and uniform cooling, and carefully considering the preform wall thickness and design to accommodate expansion during hot filling.

Q: How do I maintain the dimensional accuracy of preform molded products?

A: To maintain the dimensional accuracy of preform molded products, it is crucial to have a well-designed mold with precise dimensions and tolerances. Selecting high-quality materials and implementing strict process control measures, including monitoring and controlling parameters such as temperature, pressure, and cooling time, are essential. An efficient cooling system, regular maintenance, and cleaning of the mold are also necessary.

Q: What are the four stages of molding?

A: The plastic resin material is melted in the injection molding machine and then injected into the mold, where it cools and solidifies into the final part or parts. The process consists of four stages that include Clamping, Injection, Cooling, and Ejection.

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