DE102005057465A1 - Post-treatment of injection molding, e.g. preform, includes delivering molding from injection mold into receiver, in which molding is held out of direct contact with receiver to prevent damage - Google Patents

Abstract

The present invention relates to a method for the aftertreatment of a molding produced in an injection mold, in which the molding is transferred from the injection mold to a receiving element. In order to provide a method for aftertreatment of a molding produced in an injection mold that allows early removal from the injection mold and also enables largely damage-free aftertreatment of the molding, it is proposed according to the invention that the molding be at least temporarily held without contact by the receiving element.

Description

The The present invention relates to a method for aftertreatment one in an injection mold manufactured molding. Injection molding is one of the most important Process for the production of moldings or molded parts. in this connection which is generally original heated as a powder or granules molding compound, plasticized and under high pressure (several 100 bar) in a corresponding mold pressed. The molding material solidifies in the mold and is then the open Tool removed.

For example become standard PET bottles in general by stretch blow molding a hollow body preform or hollow body preform produced. In this case, the hollow body preform in a first Step by injection molding created. The subsequent to the injection molding stretch blow molding can either immediately after production of the hollow body preform or for a later Timing.

at the production of the corresponding injection molds is a high cost of need, there the injection mold on the one hand for designed very high pressures must be and on the other hand also must have correspondingly heated and / or cooled channels.

Usually consists of an injection mold for the production of PET preforms from a variety, for. B. 96, cavities, be introduced into the appropriately trained tool cores. With the tool closed, i. if the core in the corresponding cavity is used, between the core on the one hand and the cavity on the other a space, the so-called form space, formed. In this room will be then the plasticized plastic, z. B. PET, under high pressure injected. Once the PET preform has cooled sufficiently, the mold can be opened and the preform are removed.

Around the cycle times, i. the time from an injection to the next It is already common practice to reduce the size of the preform very early Time from the form to which the preform to his Outside surfaces already is fixed, its inner realm, the so-called soul, however still liquid is. In this state, the preform is generally in a handed over so-called receiving plate, which consists of a group of receiving cavities. That's the way it is, for example in the so-called vertical tools, i. those injection molds, which is due to a vertical movement of a tool part relative to the other open, common, the mold already after z. B. 10 seconds to open, a receiving plate with corresponding receiving cavities to retract into the mold, the individual preforms in the receiving cavities by gravity fall into it, the receiving plate with the preforms to exit the tool, to close the mold again and the next injection molding to start. During the next injection molding remain the previous preforms in the receiving cavity, which is usually chilled becomes.

It are also embodiments, in which a gripper unit retracted into the opened injection mold is to grab the preforms and transfer them to the receiving cavities.

There the preform for cooling in the receiving cavity of the prior art must linger for a relatively long time, so that in usually already the next one Preform from the injection mold can be removed before the preform in the receiving cavity so far chilled is that he without the risk of damage it is already common to use receiving plates, which have several groups of receiving cavities, each group so many receiving cavities has, as the injection mold convincing Preforms per injection cycle provides. The individual receiving cavities groups are then successively populated with preforms, so that the single preform longer than an injection molding cycle in the receiving cavity can remain.

Such However, mounting plates are correspondingly large and only very expensive too Taxes.

at However, the known methods are the shortening of the cycle time Limits set since the outer surfaces of the Preforms must already have a certain strength, since otherwise at the handover of the preform from the tool core into the receiving cavity of the receiving plate and the associated touch possibly deformed between preform and receiving cavity of the preform becomes.

outgoing From the described prior art, it is therefore the task of present invention, a method for the aftertreatment of a an injection mold To provide prepared molded article, the early removal from the injection mold allowed and also a largely damage-free aftertreatment of the molding allows.

Under Aftercare will be followed by every conceivable type of treatment the molded article understood after removal from the injection mold, such as cooling, tempering or deformation.

According to the invention solved task by a process for the aftertreatment of a product produced in an injection mold Moldings, in which the molding of the injection mold a Transfer recording element is, wherein the molding at least temporarily substantially non-contact is held by the receiving element.

For example the receiving element can be a receiving cavity with an open and a closed End, whose inner shape is essentially the outer shape corresponds to the molding, wherein the molding at least temporarily in the receiving cavity is held so that the molding not completely into the receiving cavity penetrates, so that a large part the outer surface of the molding the inner surface the receiving cavity not touched.

Thereby, that the Outside surface of the Forming does not come into contact with the receiving cavity, the Preform be transferred in a state in which the surfaces of the preform are still relatively soft. In this condition could be a contact between preform and receiving cavity to irreversible damage to the Lead preform.

Therefore is in a preferred embodiment the molding by means of a fluid, preferably by means of a gaseous fluid, that through an opening preferably in the vicinity the closed end of the receiving cavity is inserted into this prevented from doing so with the inner surface the receiving cavity in touch to step. In other words, for example, compressed air at the bottom End of the receiving cavity introduced into this, what prevents the Molding completely into the receiving cavity penetrates, since he then the receiving cavity due to the substantial agreement the outer shape of the molding would close with the inner shape of the receiving cavity. In this condition would however, that introduced by the Compressed air generated pressure the mold again immediately a small Piece out lift the receiving cavity. It thus forms between receiving cavity on the one hand and molding on the other an air layer, which could also be called an air cushion. Of the Formling floats over the receiving cavity and is held substantially solely by the air bag.

It is ideally possible, none at all allow direct contact between the molding and the receiving cavity. An unwanted deformation of the preform is prevented by the air cushion.

It is self-evident also possible, the molding at selected Areas, e.g. on a neck ring, but it is on it to pay attention that not the entire weight is applied to the support surface. It has been shown that at a very early one Removal of the molding from the mold, the already solid surface of the mold Softening the shape due to the still very hot soul, so that one only held in the neck area molding its shape solely due change his weight again can.

Basically therefore any direct contact is not desired. Still, it can be at the handover of the Moldings from the tool into the receiving cavity or also during the aftertreatment of the molding in the receiving cavity for a short time in sections touches come between molding and receiving cavity. Although this in principle not wished is, these still do not question the method according to the invention, since they are only for a short time and - there the air cushion acts as a buffer - only with little force. In principle, the introduced through the opening in the receiving cavity prevented Compressed air, attached to the outer surface of the Moldings flows along a complete one Penetration of the molding into the receiving cavity.

As a general rule it is sufficient if the receiving cavity has a supply opening for the corresponding fluid. However, it has been shown that the After-treatment is particularly advantageous if a plurality of openings, through which the fluid is supplied will exist. For example, the receiving cavity on her lower end an insert made of porous material, eg. B. sintered metal, have, so that Fluid is supplied through the many pores of the porous section.

In a preferred embodiment is about it also provided that a Post-treatment pen whose outer surface at least in sections, approximately with the inner shape of a cavity within of the molding, in the molding cavity is moved in. This post-treatment pen is for the post-treatment of the inner surface of the molding provided.

It is particularly expedient if at least temporarily a fluid, preferably a gaseous fluid, is introduced into the molding cavity through an opening in the aftertreatment pen. With the fluid then, for example, the molding cavity can be cooled. In a further particularly preferred embodiment it is provided that during the movement of the Nachbehandlungsstiftes into the mold cavity fluid is introduced into the mold cavity, so that the molding by the outflowing fluid and substantially without direct contact between the post-treatment pen and molding in the recording cavity is pressed into it. In other words, the movement of the molding within the receiving cavity follows largely non-contact, so that the molding floats on the side of the receiving cavity on the air cushion provided by this, while the aftertreatment pen pushes the molded article further between the post-treatment pen and molding air cushion pushes the molding into the receiving cavity.

Also It is advantageous here if the fluid flows through several openings, preferably over a porous one Element introduced in the post-treatment pen in the molding becomes. Alternatively, the entire aftertreatment pen can also be used from a porous one Be made of material.

In a further particularly preferred embodiment is provided that the Forming within the receiving cavity at least in sections warmed up becomes. It has been shown that the quality of the molding in terms of its physical or mechanical properties dependent on the speed and uniformity of the cooling process changed. To cool down too fast the surfaces Therefore, it may be advantageous if the Molding on its surface at least partially heated until the inside of the molding material, the so-called soul also cooled to a certain temperature. Furthermore It may, depending on further planned processing steps, of Be advantageous if the molding, especially in the form of a preform after cooling reheated is, for example, a further treatment by stretch blow molding to enable. Furthermore, it may be appropriate if the molding within the receiving cavity at least in sections chilled becomes.

• a) Einbringen des Preforms in eine Aufnahmekavität, deren Innenfläche in etwa der äußeren Fläche des Preforms entspricht,
• b) Einbringen eines Fluids in die Aufnahmekavität über eine Öffnung in der Nähe des geschlossenen Endes der Aufnahmekavität,
• c) Ausbilden eines Fluidkissens zwischen Preform und Aufnahmekavität,
• d) Halten des Preforms in der Schwebe ohne wesentlichen direkten Kontakt zwischen Preform und Aufnahmekavität.

With regard to the aftertreatment of a preform, the object mentioned at the outset is achieved, in particular, by a method which has the following steps:

• a) introducing the preform into a receiving cavity whose inner surface corresponds approximately to the outer surface of the preform,
• b) introducing a fluid into the receiving cavity via an opening in the vicinity of the closed end of the receiving cavity,
• c) forming a fluid cushion between preform and receiving cavity,
• d) holding the preform in suspension without significant direct contact between preform and receiving cavity.

there Is it possible and for some applications also useful, step b) already during the step a) perform. Thus, already at the transfer of the preform from the mold into the receiving cavity a contact between Preform on the one hand and recording cavity on the other hand prevented become.

It However, there are also tool shapes, especially so-called horizontal tools, in which the preform is not transferred by gravity into the receiving cavity can be. The handover then takes place, for example, at a time when the Aufnahmekavität not vertically but horizontally aligned. Would you already be here during step a) introduce a fluid into the receiving cavity, it could a premature ejection of the Preforms from the receiving cavity cause. It is therefore appropriate here to introduce the fluid only then if the receiving cavity moved out of the mold and into a vertical position has been brought.

As soon as the preform without significant direct contact in the limbo between Preform and receiving cavity is held solely by the fluid cushion provided is provided in a particularly preferred embodiment that an aftertreatment pen is introduced into the preform whose outer contour is substantially the inner contour of the preform corresponds (step e).

By the aftertreatment pin is aftertreated the inner contour of the preform, i.e. either reshaped or postcooled or possibly even heated.

Especially it is preferred if the treatment pen at its tip and / or on its side surfaces one or more openings and fluid from the one or more openings of the aftertreatment pen emanates when the aftertreatment pen is immersed in the preform. Especially useful it, though between the outer surface of the Aftertreatment pin and the inner surface of a fluid cushion formed so that the Preform in the receiving cavity essentially alone over the fluid cushion without significant direct contact between preform and Post-treatment pen is pressed into it (Step f).

The surface of the preform can still be so soft in this process that by the fluid cushion comes to a surface smoothing. This is special in the lower region of the preform, i. on the outside of its closed end, beneficial since it is common here due to the injection point or the gating a bump located in the preform. Through the fluid cushion can also this unevenness be eliminated, so that the injection point virtually unrecognizable in the finished inflated bottle is.

In In a further particularly preferred embodiment, the aftertreatment pen is finally so far in the receiving cavity moved in that the outer preform wall with the inner wall of the receiving cavity and in contact (step g). At this moment receives the preform its final Shape. It is possible here that the Inner wall of the preform with the outer surface of the post-treatment pen in touch comes. However, this is not essential. The best Results were obtained in experiments, if only one touch between Preform and receiving cavity not but was done between preform and aftertreatment pen.

is the preform before the described contact step already suitable after treatment, the molding step, i. the moment, in which the aftertreatment document completely inserted into the receiving cavity is less than 2 seconds, preferably less than 1 second, more preferably less than 500 milliseconds persist. After that the preform has its final Form and the post-treatment pen is now moved out of the Aufnahmekavi ity again something. The preform can now be removed either from the receiving cavity or it can be changed back into the already described "floating" state, in which causes a targeted cooling of the preform due to the fluid becomes. Of course it is also possible that the Preform on its outside with the receiving cavity stays in touch.

Conveniently, is the supply of fluid in the moment in which the outer Preformwand with the inner wall of the receiving cavity comes in contact, interrupted.

It has about it out for many use cases proved beneficial when the fluid introduced into the receiving cavity and / or the fluid introduced into the aftertreatment pen is heated becomes. By heating the Fluids can be a post-deformation of the preform and thus smaller Inaccuracies in the surface be removed from the preform.

In a further particularly preferred embodiment, it is provided that the preform is compressed in step f) or g), ie during the movement of the aftertreatment pin into the receiving cavity of the preform in its axial length. This is particularly advantageous if, during this step, a section of the preform is brought to a first temperature T ₁ and a section of the preform is brought to a second temperature T ₂ , wherein T _{1 is} larger, and preferably at least 10 ° C larger and especially preferably at least 20 ° C greater than T ₂ . For example, the warmer portion could be located closer to the neck portion of the preform than the colder portion. This has the consequence that the preform cools relatively quickly in its lower region, so that the upsetting of the preform along its axial length substantially in the warmer portion which is located closer to the neck portion, takes place. As a result, this section will have a slightly higher wall thickness than the lower section of the preform. Such an uneven thickness of the preform may be desirable if the bottle to be produced in a further process step should have reinforcing ribs in a certain area, so that an increased amount of material is required in this area.

Basically it would be true also possible, the Preform already in the injection mold with a section by section to equip larger wall thickness, the Wall thickness however, is the criterion determining the cycle time, so that an increase in the wall thickness of the Preforms in the form always an extension of the cycle time after pulls. The procedure according to the invention makes it possible to use the preform Finally an increased Wall thickness to lend without it to an extension the cycle time is coming.

Farther is the advantage of the post-treatment pen designed such that it at Completely into the receiving cavity hineinbewegter position closes the preform substantially sealing.

In a further preferred embodiment will be following moving in the aftertreatment pen the aftertreatment pen again from the receiving cavity moved out, a fluid is over the opening the receiving cavity supplied and the aftertreatment pen is connected to a vacuum source, so that the Preform moves out of the receiving cavity with the post-treatment pen.

Farther it is beneficial if a sleeve element is provided, which surrounds the preform in the threaded area and the sleeve element after the post-treatment is connected to a vacuum source, to remove the preform from the receiving cavity.

Furthermore, it can be directly after the post-treatment of the preform, which is to be inflated in the final bottle shape, be advantageous if for removing the preform from the receiving cavity a stretch rod, as used in blow molding, is introduced into the preform, the Preform by means of the stretch rod and an applied in an opening in the stretch rod vacuum, is removed from the receiving cavity and finally the stretch rod together with preform in a die is inserted and the preform is stretched and inflated in the die to form a PET bottle or other article.

Regarding The device is achieved by the above-mentioned object a system for the post-treatment of a manufactured in an injection mold Moldings in which a holding device for substantially non-contact Holding the molding is provided.

Farther in a preferred embodiment the holding device has a receiving cavity with a closed and an open end for receiving the molding, wherein the inner shape the receiving cavity adapted in this way is, that you essentially the outer shape corresponds to the male molding, and the molding in the cavity is held such that the large part the outer surface of the Moldings not with the inner surface of the receiving cavity comes into contact.

there It is advantageous if the holding device a distance between outside of the molding and inner surface the receiving cavity guaranteed between about 1 mm to about 5 mm.

In a particularly preferred embodiment is the holding device through at least one opening in the receiving cavity with a fluid supply is connectable formed. Will over the opening in the receiving cavity supplied a fluid, so the fluid ensures that the Molding not complete into the receiving cavity can penetrate and therefore not the inner surface of the receiving cavity touched. The holding of the molding is thus carried out by the supplied fluid without it requires direct physical contact between the molding and the receiving cavity.

The at least one opening in the receiving cavity is preferably nearby arranged the closed end. Conveniently, the receiving cavity is at least partially made of porous Material formed.

Farther is in a particularly preferred embodiment, a cooling device for cooling the receiving cavity and / or the supplied fluid intended. additionally Alternatively, a heating device for heating the Aufnahmekavität and / or of the supplied Be provided fluid.

Farther In a particularly preferred embodiment, it is an aftertreatment pen provided, which is hineinbewegbar in the receiving cavity. in this connection it is advantageous if the aftertreatment pen has at least one opening, preferably in the region of its tip, which can be connected to a fluid supply wherein the aftertreatment pen is preferably made of a porous material consists. The aftertreatment pen is in a preferred embodiment designed for to press a molding further into the receiving cavity, and Although without significant contact between aftertreatment pen and molding. This pushing is done alone due to the fluid cushion, which necessarily by the feed of the fluid through the opening in the post-treatment pen between the post-treatment pen on the one hand and molding on the other hand.

Farther is in a particularly preferred embodiment, a cooling device for cooling the Post-treatment pen and / or post-treatment pen supplied Fluid provided. additionally or alternatively, a heating means for heating tion of the Post-treatment pen and / or the supplied by this Be provided fluid.

The inventive system is preferably for that designed, the molding at least temporarily substantially exclusively by the means of receiving cavity on the one hand and post-treatment pen on the other hand supplied fluid to keep.

The described system is particularly advantageous in the aftertreatment of preforms that follow be inflated to appropriate bottles or other items. The receiving cavity points expediently a ring element with preferably conically widening inner or outer surface, that surrounds the open end of the receiving cavity. Finally, it is preferable a sleeve element provided, which surrounds the post-treatment pen and particularly preferred is formed such that the sleeve member at complete into the receiving cavity moved in Nachbehandlungsstift with the neck portion of nachzubehandelnden Preforms contact.

there are in a further particularly preferred embodiment the ring member of the receiving cavity and the sleeve member of the adjacent Post-treatment pen with mutually corresponding preferably conically expanding surfaces formed when immersing the aftertreatment pen in the receiving cavity contact each other and a centering of the post-treatment pen in relation to the receiving cavity guarantee.

Further Advantages, features and applications of the present Invention will become apparent from the following description of a preferred embodiment and the associated Characters.

Show it 1 to 4 in each case a snapshot of the method according to the invention.

In 1 is a recording cavity 1 shown having a lower, closed end and an upper, open end. Within the receiving cavity is a cooling channel 2 arranged, which allows cooling of the receiving cavity, for example by means of cooling water. The bottom of the receiving cavity 1 is through a porous insert 3 educated. Finally, below the porous insert 3 a feeder 4 for a fluid, e.g. B. compressed air shown. Through the feeder 4 can compressed air into the receiving cavity 1 are introduced, which is distributed through the porous material and in the lower region of the receiving cavity of the porous material in the receiving cavity 1 entry. The receiving cavity is for receiving a preform 5 provided, which has been drawn here schematically. The preform 5 has a threaded portion 6 , a neck ring 7 and a lower area 13 on. The outer surface of the lower area 13 of the preform 5 corresponds essentially to the inner surface of the receiving cavity 1 , For removal of the preform 5 from the mold, this is first opened and then retracted a plate with corresponding receiving cavities in the mold. The preform 5 is then in the receiving cavity 1 to hand over. Due to the air flow 12 that by the to the feeder 4 applied compressed air is generated, the preform 5 held in suspension so that it has almost no contact with the inner surface of the receiving cavity 1 Has. The airflow is in 1 schematically represented by arrows.

The receiving cavity 1 will be after the handover of the preform 5 into the receiving cavity 1 moved out of the mold. This can now be used to make another preform 5 be used. Meanwhile, a post-treatment pen 9 introduced into the preform. This condition is in 2 shown. It can be clearly seen that the preform neither the receiving cavity 1 still the post-treatment pen 9 touched. The post-treatment pen 9 is also made of porous material and with a corresponding supply for a fluid, eg. B. compressed air connected. It also forms between the post-treatment pen 9 and the preform 5 an air cushion. In this state, in 2 shown is the preform 5 be treated. The supplied fluid can be tempered accordingly. This tempering can be done for example by means of a resistance heater, for example in the form of a heating coil. The course of the fluid flow 12 is also indicated here by arrows.

In 3 is the step of the final formation of the shape of the preform shown. Here is the post-treatment pen 9 as far as possible into the receiving cavity for a brief moment 1 introduced. In this situation, the preform touches 5 the inner wall of the receiving cavity 1 but not the outside wall of the post-treatment pen 9 , It can be clearly seen that the aftertreatment pen 9 with a sleeve element 10 Is provided. Arranged annularly around the receiving cavity is a ring element 8th , The sleeve element 10 is designed to be with the neck ring 7 of the preform in the in 3 shown position comes into contact. The ring element 8th and the sleeve member 10 are each provided with conical surfaces which correspond to each other so that they are in the in 3 shown position contact each other and for a centering of the post-treatment pen 9 within the receiving cavity 1 to care. In the in 3 shown position occurs the upper edge of the preform 5 with the case bottom 11 of the sleeve element 10 in contact, so that around the threaded section 6 of the preform 5 between preform on the one hand and the surrounding sleeve element 10 on the other hand forms a closed chamber. If necessary, this closed chamber can be connected to a vacuum source in order to remove the preform in a further step 5 from the receiving cavity 1 refer to.

The in 3 shown condition is maintained only for a very short moment, preferably for less than 1 second. During this moment, the fluid supply is expediently switched off. Then the aftertreatment pen 9 again something from the preform 5 moved out, so that approximately in 4 shown position results. Apply the pressurized fluid to the aftertreatment pen 9 Fluid is circulated around the inside of the preform again. In this state, the preform can be further cooled due to the fluid supply. The outside of the preform is made by direct contact with the water-cooled receiving cavity 1 cooled. However, it is also possible in the area of the base section 11 and / or via the aftertreatment pen 9 to build a vacuum so that the preform 5 upwards in the direction of the post-treatment pen 9 is attracted. The preform 5 can now with the aftertreatment pen 9 from the receiving cavity 1 be removed.

1

receiving cavity

2

cooling channel

3

porous use

4

feed

5

preform

6

threaded portion

7

collar

8th

ring element

9

post-treatment pin

10

sleeve member

11

sleeve base

12

fluid flow

13

lower Area of the preform

Claims (46)

Process for the aftertreatment of a molded article produced in an injection mold, in which the molded article from the injection mold is transferred to a receiving element, characterized in that the molded article is held by the receiving element at least temporarily without contact. Method according to claim 1, characterized in that the receiving element has a receiving cavity ( 1 ) with an open and a closed end, whose inner shape substantially corresponds to the outer shape of the molding, and the molding is held such that the molding is not completely in the receiving cavity ( 1 ) penetrates so that a majority of the outer surface of the molding does not touch the inner surface of the receiving cavity. Method according to claim 2, characterized in that the molding is conveyed by means of a fluid, preferably a gaseous fluid, through an opening preferably in the vicinity of the closed end of the receiving cavity ( 1 ) is prevented from interfering with the inner surface of the receiving cavity ( 1 ) to get in touch. Method according to Claim 3, characterized in that compressed air is forced through an opening in the receiving cavity ( 1 ) is introduced and flows around the molding on its outer surface and thus prevents it completely in the receiving cavity ( 1 ) to penetrate. Process according to Claim 3 or 4, characterized in that the fluid is passed through a plurality of openings, preferably through a porous section ( 3 ) into the receiving cavity ( 1 ) is introduced. Method according to one of claims 1 to 5, characterized in that an aftertreatment pen ( 9 ), the outer surface of which at least partially coincides approximately with the inner shape of a cavity within the molding, is moved into the molding cavity. Method according to claim 6, characterized in that through an opening in the aftertreatment pen ( 9 ) At least temporarily, a fluid, preferably a gaseous fluid, is introduced into the molding cavity. Method according to claim 7, characterized in that during the movement of the aftertreatment pen ( 9 ) is introduced into the molding cavity fluid in the mold cavity, so that the molding by the outflowing fluid and substantially without direct contact between post-treatment pen ( 9 ) and molding is pushed further into the receiving cavity. Method according to one of Claims 6 to 8, characterized in that the fluid is conveyed via a plurality of openings, preferably via a porous element ( 3 ) in the aftertreatment pen ( 9 ) is introduced into the molding. Method according to one of claims 2 to 9, characterized in that the molding within the receiving cavity ( 1 ) is warmed up at least in sections. Method according to one of claims 2 to 9, characterized in that the molding within the receiving cavity ( 1 ) is cooled at least in sections. Process for the post-treatment of a preform ( 5 ), after it has been taken from a tool mold, which has the following steps: a) introduction of the preform ( 5 ) into a receiving cavity ( 1 ), whose inner surface corresponds approximately to the outer surface of the preform, b) introducing a fluid into the receiving cavity ( 1 ) via an opening near the closed end of the receiving cavity ( 1 ), c) forming a fluid pad between preforms ( 5 ) and receiving cavity ( 1 ), d) holding the preform ( 5 ) in suspension without significant direct contact between preforms ( 5 ) and receiving cavity ( 1 ). Method according to claim 12, characterized in that that step b) already during Step a) performed becomes. Method according to claim 12, characterized in that that step b) is carried out only after the completion of step a). Process according to one of Claims 12 to 14, characterized in that, at step d), the step e) of introducing a post-treatment pen ( 9 ) whose outer contour is substantially the inner contour of the preform ( 5 ), in the preform ( 5 ). Method according to one of claims 12 to 14, characterized in that at step d) the step e) providing an aftertreatment pen ( 9 ) whose outer contour is substantially the inner contour of the preform ( 5 ) and having one or more openings at its tip and / or at its side surfaces, allowing fluid to escape from the one or more openings of the aftertreatment pen ( 9 ) and immersion of the aftertreatment pen ( 9 ) in the preform ( 5 ), connects. Method according to claim 16, characterized in that, at step e), the step f) forming a fluid cushion between post-treatment pen ( 9 ) and inner surface of the preform ( 5 ) and pushing in the preform ( 5 ) into the receiving cavity ( 1 ) substantially solely via the fluid cushion without substantial direct contact between preform ( 5 ) and post-treatment pen ( 9 ). A method according to claim 17, characterized in that step f) is followed by the step g) of moving the aftertreatment pen ( 9 ) as far as the receiving cavity ( 1 ), that the outer preform wall with the inner wall of the receiving cavity ( 1 ) comes into contact. Method according to claim 18, characterized that in Step g) the aftertreatment pen after a time interval of less than 2 seconds, preferably less than 1 second, especially preferably less than 500 milliseconds again a bit far from the receiving cavity is pulled out. A method according to claim 18 or 19, characterized in that step b) is interrupted at least at the moment in which the outer preform wall with the inner wall of the receiving cavity ( 1 ) comes into contact. Method according to one of Claims 12 to 20, characterized in that the fluid which enters the receiving cavity ( 1 ) and / or the fluid introduced into the aftertreatment pen ( 9 ) is introduced, is heated. Method according to one of claims 18 to 21, characterized in that the preform ( 5 ) in step g) is compressed in its axial length. A method according to claim 22, characterized in that during step g) the one section of the preform ( 5 ) to a first temperature T ₁ and a portion of the preform ( 5 ) is brought to a second temperature T ₂ , wherein T _{1 is} greater, preferably greater by at least 10 ° C and more preferably at least 20 ° C greater than T ₂ . A method according to claim 23, characterized in that the warmer portion is closer to the neck portion of the preform ( 5 ) is arranged as the colder section. Method according to one of claims 15 to 24, characterized in that the aftertreatment pen ( 9 ) is formed so that it is completely in the receiving cavity ( 1 ) moved in position the preform ( 5 ) closes substantially sealingly. A method according to claim 25, characterized in that following the introduction of the aftertreatment pen ( 9 ) the post-treatment pen ( 9 ) again from the receiving cavity ( 1 ) is moved, a fluid through the opening of the receiving cavity ( 1 ) and the aftertreatment pen ( 9 ) is connected to a vacuum source so that the preform ( 5 ) with the aftertreatment pen ( 9 ) from the receiving cavity ( 1 ) emotional. Method according to one of Claims 15 to 26, characterized in that a sleeve element ( 10 ) that the preform ( 5 ) surrounds in the threaded area and the sleeve element ( 10 ) is connected after completion of a post-treatment with a vacuum source to the preform ( 5 ) from the receiving cavity ( 1 ) refer to. Process according to one of Claims 13 to 27, characterized in that a stretching rod is introduced into the preform following the aftertreatment ( 5 ), the preform ( 5 ) by means of the stretching rod and vacuum from the receiving cavity ( 1 ), the stretching rod together with preform ( 5 ) is introduced into a die and the preform ( 5 ) is finally stretched in the die and inflated to form a plastic bottle. System for the aftertreatment of a product produced in an injection mold Moldings, characterized in that a holding device for essentially non-contact Holding the molding is provided. System according to Claim 29, characterized in that the holding device has a receiving cavity ( 1 ) having a closed and an open end for receiving the molding, wherein the inner shape of the receiving cavity is adapted so that it corresponds substantially to the outer shape of the male molding, and the molding in the cavity ( 1 ) is held such that the majority of the outer surface of the molding does not interfere with the inner surface of the receiving cavity ( 1 ) comes into contact. System according to claim 30, characterized characterized in that the holding device a distance between the outside of the molding and the inner surface of the receiving cavity ( 1 ) is ensured between about 1 mm to about 10 mm. System according to claim 30 or 31, characterized in that the holding device is guided through at least one opening in the receiving cavity ( 1 ), which is connectable to a fluid supply is formed. System according to claim 32, characterized in that the at least one opening in the receiving cavity ( 1 ) is disposed near the closed end. System according to claim 32 or 33, characterized in that the receiving cavity ( 1 ) at least in sections of porous material ( 3 ) that forms the at least one opening. System according to one of claims 32 to 34, characterized in that a cooling device ( 2 ) for cooling the receiving cavity ( 1 ) and / or the fluid to be supplied via this is provided. System according to one of claims 32 to 35, characterized in that a heating device for heating the receiving cavity ( 1 ) and / or the fluid to be supplied via this is provided. System according to one of Claims 30 to 36, characterized in that an aftertreatment pen ( 9 ), which enters the receiving cavity ( 1 ) is hineinbewegbar. System according to claim 37, characterized in that the aftertreatment pen ( 9 ) has at least one opening, preferably in the region of its tip, which can be connected to a fluid supply, wherein the aftertreatment pen ( 9 ) preferably consists of a porous material. System according to claim 38, characterized in that the aftertreatment pen ( 9 ) is designed to move a molded article further into the receiving cavity ( 1 ) without substantial contact between aftertreatment pen ( 9 ) and receiving cavity ( 1 ). A system according to any one of claims 38 to 39, characterized in that the system is adapted to at least temporarily substantially exclusively shape the molding by means of the receiving cavity ( 1 ) on the one hand and post-treatment pen ( 9 On the other hand, to keep supplied fluid. System according to one of Claims 37 to 40, characterized in that a cooling device for cooling the post-treatment pen ( 9 ) and / or the fluid to be supplied via this is provided. System according to one of Claims 37 to 41, characterized in that a heating device for heating the post-treatment pen ( 9 ) and / or the fluid to be supplied via this is provided. System according to one of Claims 29 to 42, characterized in that the system for the post-treatment of preforms ( 5 ) is provided. System according to claim 43, characterized in that the receiving cavity ( 1 ) a ring element ( 8th ) having preferably a conically widening inner surface, that the open end of the receiving cavity ( 1 ) surrounds. System according to one of claims 37 to 44, characterized in that a sleeve element ( 10 ) is provided, which the aftertreatment pen ( 9 ) and preferably designed such that the sleeve element ( 10 ) completely into the receiving cavity ( 1 ) aftertreatment pen ( 9 ) with the neck portion of the preform to be post-treated ( 5 ) comes into contact. System according to claim 45, characterized in that the ring element ( 8th ) of the receiving cavity ( 1 ) and the sleeve element ( 10 ) of the post-treatment pen ( 9 ) have surfaces which correspond to one another during immersion of the aftertreatment pen ( 9 ) into the receiving cavity ( 1 ) and a centering of the aftertreatment pen ( 9 ) with regard to the receiving cavity ( 1 ) guarantee.