Plastics

The process of injection blow molding (IBM) is used for the production of hollow glass and plastic objects in large quantities. In the IBM process, the polymer is injection molded onto a core pin; then the core pin is rotated to a blow molding station to be inflated and cooled. This is the least-used of the three blow molding processes, and is typically used to make small medical and single serve bottles. The process is divided into three steps: injection, blowing and ejection.

Spray coating Spray coating is a technology used to coat the surface of the bottle to improve the sliding and brightness properties of the treated bottles. This is a very effective method in comparison to additives inside the bottles or preforms, as it doesn’t affect the material properties. Often , additives have an impact on

This article describes a test setup in a theoretical model to measure the impact of the flushing air, and evaluating the cost of the compressed air against the cooling coefficient gain.

In blow molding the blowing pressure is extremely important. An article from the University of Aachen with a theoretical model on the importance of the pressure in function of the surface geometry.

Injection moulding (injection molding in the USA) is a manufacturing process for producing parts by injecting material into a mould. Injection moulding can be performed with a host of materials, including metals, (for which the process is called diecasting), glasses, elastomers, confections, and most commonly thermoplastic and thermosetting polymers.

This has two main different methods, namely Single-stage and two-stage process. Single-stage process is again broken down into 3-station and 4-station machines In the two-stage injection stretch blow molding ( ISBM ) process, the plastic is first molded into a “preform” using the injection molding process. These preforms are produced with the necks of the bottles, including threads (the “finish”) on one end. These preforms are packaged, and fed later (after cooling) into a reheat stretch blow molding machine. In the ISB process, the preforms are heated (typically using infrared heaters) above their glass transition temperature, then blown using high-pressure air into bottles using metal blow molds. The preform is always stretched with a core rod as part of the process.

Pipeline leak detection is used to determine if and in some cases where a leak has occurred in systems which contain liquids and gasses. Methods of detection include hydrostatic testing after pipeline erection and leak detection during service.

Moveable conveyors are designed to be able to handle the most difficult empty plastic bottles on our conveyors, and be able to move them around easily.

Labeling behind blow molding machines can result in a bubbled surface of the label, due to bottle shrinkage. There are different techniques to improve / solve these problems.

With this article, we try to give an overview of the possibilities of packing bottles in boxes.
When used, the advantages & disadvantages from every solution and what machines are available.