Preforms are produced from polyethylene terephthalate (PET), so they are called Bottle Seal Liners. They’re created by RETAL using a highly-accurate injection molding process on gear from the leading world suppliers.

Preform weight depends upon the end container’s desired volume. Preforms can be single-coating or multilayer. Buffer preforms provide extra benefits and increased beverage life expectancy, thanks to an exclusive layer a part of several layers of polyethylene terephthalate.

RETAL provides a full variety of polyethylene terephthalate (PET) preforms for packaging, transporting and keeping consuming water, nutrient water, carbonated drinks, juices, nectars, infant food, milk products, dark beer, reduced-alcoholic beverages and alcohol based drinks up to 40Percent abv, edible oil, mayonnaise, ketchup, sauces, home and makeup products products

As well as regular preforms, RETAL manufactures custom preforms tailored to person consumer specifications.

To find the very best packaging option for your needs, speak to a sales representative or technical support specialist. They will help you produce a appropriate choice according to your equipment, the complexity of the shape of the PET bottle, along with your special requirements.

PET preforms, better known as “preforms”, are an intermediate item by which the creation of containers is achieved. The nickname of PET is a result of the content from which they are created, polyethylene terephthalate.


This product is produced via a precision blow molding and shot procedure. The preform PET is administered in to a mold to become preform that, through an extra blowing stage, will require the required form (mainly storage containers for drinks, detergents or any liquid).

One of the main advantages of Bottle Seal Liners could be the great flexibility when it comes to design, since completely different items can be developed through this same procedure. Dependant upon the client’s needs, we can differ the weight, volume, colour, shape or throat in the bottle.

PET preforms can be utilized for the packaging of nutrient water, juices, liquors, sodas, carbonated beverages, oils ideal for consumption, medications, pickles, jams, consumer products, etc.

Two several types of techniques can be utilized, which are:

Solitary Phase or Incorporated System

The injection and coming processes are integrated inside the same machine. The preform is shot shaped and though it may be nevertheless hot it really is blown to create the part. This process is suitable for small and method creation lines.

Two Phase System

Within this method, two separate machines are employed, a machine for that shot from the preforms and another for coming to reheat the preforms and make the ultimate item. This technique is best suited for medium and huge-scale production.


* Drying in the Pet (granules)

* Plasticization of PET

* Shot molding from the preform

* Home heating the preform

* Blow molding in the preform

* Cooling and expulsion in the final item

Regular proformas

Regardless of the excellent malleability of this product, there are some standards in order to simplify the process. A few of the specifications that people offer from PCO, POPP, Bericap, BPF, OIL

In order to get an effective creation of preforms it is actually necessary to rely on an associate who invests in study and development to provide revolutionary and versatile options for both machinery and then for moulds.

In a production procedure the systems that can make a difference, for instance, are those optimising the shot device, the press unit and also the moulds.

The injection device should have qualities such as a servo drive, continuous rotation from the attach at reduced velocity, the cabability to consume to 4Percent colouring representative without a decrease in flow and also to produce various extrusion sizes, the injection system with minimum loss in plasticization capability.

For top overall performance, the press unit should have Bottle Preform, ensure outstanding cleaning, long working life and minimum maintenance expenses.

The moulds must be developed so the preforms are of top quality and creation is fast, they must have reduced maintenance costs, a put on-evidence coating, excellent neck chilling techniques.

Also, additional advantages are given by the cabability to choose moulds kswpvl approximately 144 cavities that can be tailored to machines made by the key producers on the market.

Machines with injection-compression system will need to have elements that will make the entire procedure better and a lot more economical, as an example: optimized plasticization screw with continuous rotation to reduce usage and AA amounts, capacity to use up to completely rPET without making modifications, rotating injection-pressure tire with decreased cavity tonnage that enables less wear inside the mould.

Machines with technological qualities like the types outlined produce a considerable decrease in TCO, make owner jobs more secure and easier, and also a decided influence on the standard of the preform and the operating life of the moulds.

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