Injection stretch blow molding (ISBM) is a conversion process used to produce bottles and containers that package items such as beverages and household cleaning products.
Key stages of the process include:
- The injection molding of preforms
- Transfer of preforms to blowing equipment,
- Heating, stretching and blowing to produce the final container shape
- Cooling and transport from the machine
Benefits and Applications
Potential customer applications include bottles and wide neck jars for:
- Yogurt drinks, fresh and long shelf-life milk
- Household chemicals
- Dried powders
- Fresh juices
- Fresh soups or sauces
- Still mineral water
- Baby feed bottles
- Hot-fill applications
- Water-based paints
- Containers requiring high surface definition
- Cosmetics
- Pill packaging
- Medical (special requirements)
Properties
Stretchene – our new family of polypropylene resins for use in ISBM applications, can stand up to this rigorous conversion process, with features that include:
- Low density of 0.90 g/cm3 - >30% below PET, offering potential weight savings
- Excellent transparency at the container wall
- High thermal stability for hot fill, sterilization and microwave requirements
- Energy savings in processing; drying not required
- Excellent low water vapor transmission rates
Technical Information
More information about our wide range of products available for ISBM processes/applications can be found on our polymers site, where you may register as a new customer or login to access MSDS and RAPIDS documents. From our polymers site, you also may access the e-commerce platforms, Connect and Marketplace.
Stretchene is a trademark owned or used by LyondellBasell group companies.