The role of caps and closure is to seal and preserve the product inside each bottle. Pakistan Synthetics Limited (PSL) provides bottlers capping solutions that provide secure sealing, safe opening, consistent and consumer friendly removal torques, effective tamper evidence and application optimization. PSL understands how important excellent application performance and line efficiency are for bottlers. The caps by PSL reflect the bottler’s individual brand identity; we have a wide range of colors and offer customized printing while fully maintaining product integrity and safety
Polyethylene terephthalate (PET) is the most common thermoplastic polymer resin of the polyester family. Because PET is an excellent water and moisture barrier material, plastic bottles made from PET are used for soft drinks, still water, edible oil industry and pharmaceutical sector. The convenience attached with plastic packaging is paramount in increasing the consumption of PET in Pakistan.
PET Processing – Injection Molding. PET bottles are a huge market for the material. Processing PET into bottles can take two steps depending on the application or bottle. In the first step, PET is injection molded into a “mini bottle,” complete with threads, called a preform. This preform is then reheated, stretched and blown into its final shape. While there is technology available that combines these two processes in a single step, for larger-throughput applications preform and bottle making are generally made in distinct steps, often by different processors.
Plastic caps are produced on Compression Molding machines, selected with Sacmi of Italy, the world leaders in technology. Bottlers key requirement is to maintain carbonation, being sealed throughout the storage period, which requires excellent sealing properties. The most popular and widely-used cap design is selected to ensure smooth adaptation for the bottle’s 28mm neck. Tamperevident and liner seal designs ensure that pressure is maintained, as desired, till the caps pry off the neck.