ISBM Solution & mold

Welcome to our Injection Stretch Blow Molds page.

As one of the industry leaders, we possess extensive experience in mold design and manufacturing. Our team of professional mold engineers is dedicated to transforming your concepts and requirements into high-quality products.

Whether you need customized single-cavity molds or multi-cavity molds, we can provide you with tailored solutions.

ISBM Mold

Longterm Mould’s ISBM molds have high precision, high efficiency and long life as their core advantages. We combine sophisticated temperature control systems with multi-cavity simultaneous molding technology to ensure that the containers produced have excellent wall thickness uniformity, ultra-high transparency and stable dimensional accuracy, maximizing production efficiency and minimizing total cost of ownership for our customers.

ISBM Poducts

Longterm Mould’s ISBM molding process provides customers with high-quality plastic containers with stable dimensions and excellent performance.
We precisely optimize the entire production process, from preform to final container, to ensure that products perform well in terms of wall thickness uniformity, transparency, and barrier properties.
Whether it’s food, daily chemicals, or pharmaceutical packaging, we can provide large-scale, high-efficiency, low-cost manufacturing solutions that meet stringent standards.

Our Capability

We provide a one-stop shop for custom ISBM mold manufacturing, ISBM, and machining, including injection molding quotes, design for manufacturability (DFM) analysis, rapid prototyping, mass production, and process improvement recommendations.
Through optimized design and strict quality management, we ensure efficient production and excellent performance of injection molded products.

What is Injection Stretch Blow Molding (ISBM)

Injection Stretch Blow Molding (ISBM) is a process used for producing high-quality plastic bottles, containers, and other hollow products. This manufacturing technique combines the advantages of injection moulding and blow moulding, resulting in improved efficiency, enhanced product properties, and reduced production costs.

ISBM is mainly used for producing PET, PP, or PC bottles, which are widely used in the packaging of beverages, personal care products, and pharmaceuticals.

The ISBM Process:

ISBM involves a two-step process – injection molding and stretch blow molding – seamlessly integrated into a single machine, known as the ISBM machine. This sophisticated equipment allows manufacturers to create hollow containers with precise shapes and dimensions.

1.Injection Molding:

The process begins with the injection molding phase, where molten plastic material, usually PET resin, is injected into a preform mold. The mold shapes the material into a tube-like form, resembling the final product but smaller.

2.Stretch Blow Molding:

The preform undergoes a reheating process, making it malleable for the subsequent stretch blow molding step. The preform is then stretched vertically and horizontally using a core rod, simultaneously blown into the desired shape by high-pressure air. This dual-stretching results in a thin-walled, lightweight, and strong container.

Application of ISBM molds

Beverage packaging
PET bottles: beverages, water, juices, etc.
Hot-filled containers: suitable for tea, high-temperature liquids (e.g., PP-based bottles).

Pharmaceutical packaging
Pill vials: production of sterile, high-precision containers for tablets, syrups, and liquid medicines.

Personal care and cosmetics
Shampoo/lotion bottles: intricate shapes, textured surfaces and airtight designs for creams and gels.
Perfume/Aerosol Containers: High gloss and durability of premium brands.

Food packaging: lightweight, shatterproof, resistant to oxidation and maintains freshness (PET or HDPE).

Automotive fluids: high-impact motor oil or coolant bottles.

Medical professional applications
Medical Device Enclosures: Sterilizable, precision marketable parts for healthcare tools.
Technical containers: Custom designs for laboratory or industrial storage.

Advantages of ISBM Molds

High Precision and Consistency
Produces containers with uniform wall thickness, excellent dimensional accuracy, and repeatability, ideal for high-volume manufacturing.

Lightweight yet Durable Products
Enables thin-walled, lightweight designs without compromising durability, reducing material usage and transportation costs.

Design Flexibility
Supports complex geometries (e.g., custom shapes, handles, necks) and accommodates diverse materials like PET, PP, and engineering plastics.

Energy and Cost Efficiency
Combines injection molding (preform production) and blow molding (final shaping) into a streamlined process, minimizing waste and energy consumption.

High Production Speed
Automated systems enable rapid cycle times, making ISBM suitable for mass production of bottles, jars, and containers.

Enhanced Aesthetic Quality
Delivers smooth surfaces, clarity (for transparent materials), and premium finishes, critical for consumer packaging (e.g., beverage, cosmetic, or pharmaceutical bottles).

Injection Stretch Blow Molding (ISBM) Capabilities at Longterm Mould's

From product concept to tooling engineering, our complete design and evaluation services ensure customer satisfaction, providing customers with the highest quality engineering standards by integrating advanced capabilities and enhanced attention to every detail.

Longterm Mould is committed to providing tooling with the shortest lead times without sacrificing design and quality, providing the highest quality tool steels, which are precision machined to ensure precise interfaces between components, enabling tools to achieve maximum performance and longevity.