Finished containers are produced directly from plastic resin in one machine. The 1-step 4-station molding process is the core of ASB.

The original 1-step process developed by ASB.

By utilizing the residual heat from the preform injection molding process, 
energy consumption of the 1-step process is dramatically lower than that required for 2-step molding. After injection molding, preforms are transported throughout the rest of the process by the lip cavity (neck split).

Necks and body parts never contact another preform with the result that visual quality of the finished containers are completely free from the scuff marks or blemishes that are a common feature of 2-step molding. And, because the preform stays within the machine, hygiene is assured. 

The flexibility of the ASB Series conventional 1-step machines is ideally suited to extreme custom molding and non-PET applications.

Finished containers are produced directly from plastic resin in one machine. Preform molding and blow molding are divided for efficiency.

Unique concept by Nissei ASB, specialist of the 1-step system.

In designing the PF Series concept our engineers carefully looked at the advantages of the 1-step and 2-step manufacturing processes, broke them into individual elements, then re-combined them into the most efficient method yet devised for manufacture of PET containers.

In the “PF Series” machines, the preform is injection molded, partially cooled, temperature equalized,
re-heated and blown in what is termed a “cool parison” system. This concept, incorporates the advantages of both the 1-step and 2-step systems container molding methods in a unique bottle production system.

The practical result is a very compact injection clamp system at the preform injection station, while the blow station uses 2, 3 or 4 times less blow cavities to achieve a matching output.

This vastly reduces the mold investment cost when molding a variety of bottle shapes from common preforms.

Further simplification of the molds also results in vastly reduced downtime during mold changeover.

This process enhances heat-resistance of PET containers increasing usability. 2-step double blow heat-set technology from ASB.

2-Step for heat resistant containers

ASB has been continually developing and refining the double blow heat-setting method over more than two decades.
Containers produced by this method have unique properties that expand the uses of PET resin into new market segments.

Applications

• Heat-Set bottles and jars are commonly used for filling juices, teas, pickles,
• sauces and other bacteria sensitive products under pasteurized conditions.
• Typical filling and/or pasteurization temperatures will vary from 65 to 95°C* depending on the product to be filled.
• Heat-Setting can also be applied to returnable/refillable containers that need to be rinsed at high temperatures.
• This minimizes shrinkage and adds other advantages to the container such as improved stiffness and scratch resistance.
• Depending on the machine model used, up to 20 liter (5 US gallon) bottles can be molded.

? Maximum achievable temperatures are subject to container design and specification.