DE2702495A1 - METHOD OF MANUFACTURING A CRACK-FREE HIGH MOLECULAR-ORIENTED BLOWN CONTAINER - Google Patents

Description

Process for the production of a crack-free, highly molecular-oriented blown container

USA priority of January 22, 1976

Blown plastic containers are usually made in the manner that a parison is formed which is then inflated in a cavity of a blow mold which has the shape of the container will. Parcels have already been formed by extrusion and injection molding. In one technique for forming The procedure for non-oriented or low-orientation bottles is that the parison is injection-molded into an injection mold, which has a pin on which the parison is retained. The perforated pin and the parison are transferred into a blow mold, before the hot parison is inflated by compressed gas (air). The pin can be kept at a temperature

709830/0747

is high enough that it is ensured that the parison remains in a sufficiently soft condition for easy inflation, this technique is not for the economical production of high molecular oriented containers by blowing satisfactory because of the parison be cooled to a temperature in the orientation temperature range must before the bottle can be blown. In another technique, the procedure is such that one parison injection-molded in a mold having a cooled cavity and a cooled core pin so that the parison is rapidly solidified. The parison is removed from the mold and stored. Later the cold parison is reheated and inflated to conform to the cavity of the blow mold. The latter process can produce highly molecularly oriented containers if the parison is reheated to an appropriate temperature within the orientation temperature range for the polymer prior to the step of blowing.

Molecular orientation is achieved by stretching certain polymeric materials at a temperature within the orientation temperature range of the particular polymer. Stretching a sheet or film along the orthogonal axes results in a biaxial orientation. Molecular-oriented materials have improved physical properties, such as superior impact resistance, an increased creep resistance, increased stiffness and an increased pressure resistance as compared with the same material in unoriented condition.

Biaxial orientation of blown containers can be achieved by blowing a parison that is at a temperature within the orientation temperature range of the polymer. A high degree of orientation does lead

-3-709830 / 0747

high creep resistance, but can give rise to problems such as decreased optical clarity, stress whitening and cracking. The degree of orientation of the container, by a standard test (ASTM D-1504) to be measured, the values obtained, which are representative of the degree of orientation and which are referred to as "orientation release stress ¹¹ (OFS).

For a given polymer and intended use, there is an optimal level of orientation as given by the orientation release voltage (OFS) is determined. This can be below the maximum possible orientation value. For example, a property that deteriorates when trying to obtain high degrees of orientation is optical Permeability. Many polymers show cracking, stress whitening, fogging, or they are otherwise Way opaque when they are highly oriented.

The degree of orientation in a container made from a polymer Material has been blown depends on the conditions under which the material has been oriented. For example in the case of bottles, higher values of circumferential and axial orientation result from an increase in the degree of stretching or stretching in the circumferential and axial directions by increasing the stretching ratio and by increasing the stretching temperature reduced.

In the case of nitrile rubber, which contains polymeric acrylonitrile materials (For example, polymeric materials such as those described in US Patents 3,426,102 and 3,819,762) an orientation release stress in the circumferential direction of more than 35.2 kg / cm, preferably in the region of 45.7 kg / cm,

-4-709830 / 0747

-Ir-

adequate creep resistance for pressurized beverage bottles, which have a high ratio of container volume to weight (cf. US Pat. No. 3,786,221 and US Pat. No. 319,380, 597,679 and 516 110). The improvement in physical properties due to the orientation also allows that the wall thickness of the bottle can be reduced, thereby saving polymeric material compared to non-oriented bottles can be achieved.

Although it is already known, bottles made from molecularly oriented Nitrile rubber by blowing an injection molded bulb and such techniques have shown some success, however, they have been in practice for manufacture of bottles for carbonated beverages are not economical. This is due to the fact that - if the bottle oriented by sufficient stretching that the properties are developed that are necessary for containers for carbonated beverages What are required (assuming a wall thickness thin enough to be economical) are stress whitening and have shown cracking which has made the containers unattractive.

Further investigation of this phenomenon has shown that cracking or stress whitening occurs first Line on or near the inner surface part of the bottle wall developed. This is due to the fact that the inside of the parison is proportional to one considerably stretched to a greater extent than the outside. It has been shown that the degree of orientation depends on the thickness of the bottle wall is not constant, but on the contrary varies substantially across the wall, being at or near the interior The surface part of the wall is sufficiently high that it leads to the problems described above.

-5- 709830/0747

2702Λ95

In order to compensate for the different stretching between the inside and the outside, US Pat. No. 319,380 from December 29, 1972 a method of heat treatment had been proposed to provide a more uniform circumferential orientation over to get the thickness of the bottle sidewall. This is done in the Way accomplished that a radial temperature gradient is applied to an axial zone of the side wall of the parison before you blow the bucket into a bottle. The inner surface of the parison is made hotter than its outer surface, to compensate for the difference in stretching.

Parisons suitable for blown highly oriented containers are made using an extrusion die cavity for injection molded the outer shape and a coaxial pin for the inner shape. The production efficiency requires it is that the time for the deformation cycle is reduced to a minimum. The length of time for the deformation cycle can be can be minimized if the cavity and the pin are cooled by a circulating coolant to the polymer to solidify quickly. When the molten polymer is in a conventional injection mold with a cooled cavity and a cooled pin is pressed in, then the polymer contacts the relatively cool surfaces of the cavity and the piercer, resulting in an increase the polymer viscosity on and in the vicinity of these mold surfaces and to form a solidifying layer the mold surfaces leads. The further addition of the molten polymer to completely fill the mold causes stresses developed in the solidifying layer at and near the surfaces of the parison, which in the Retain the finished container. Polymers with a high viscosity and / or high elasticity in the melt processing temperature range are against residual stresses in the molded article sensitive. The later intentionally induced voltages

-6- 709830/0747

the molecular orientation occur to these through the deformation induced residual stresses. The higher degree of stretching the inner surface of the container during blowing leads together with the residual stresses induced in the injection mold, in particular the stresses at or near the Inside surface of the bucket, excess tension, which manifests itself as tension whitening or cracking in the container can manifest. These defects are undesirable because major cracks lead to failure due to bursting of the container and because smaller cracks degrade the optical quality of the container by causing cloudiness or other areas with a poorer appearance in the container wall. As a result, therefore, a container cannot hold up to be oriented to the extent to which these errors occur. A higher degree of orientation could be achieved if, these mistakes could be avoided.

Parcels that have been reheated from ambient temperature require long periods of time to reach temperatures that are suitable for blowing for high degrees of molecular orientation, pose problems in terms of handling, storage and cleanliness and require the use of additional energy. In addition, the kettle in the The mold must be thoroughly cooled in order to be self-supporting during removal, which results in relatively long periods of time for the Injection molding cycle are required. Naturally, the parison that comes out of the mold hot can be quenched in water, however, such a measure causes distortion or deterioration of the surface and requires drying.

Parcels made directly from the hole punch on which they were formed are not suitable for the production of highly oriented bottles in economical cycle times,

709830/0747

-7-

because of the period of time it takes to temperature conditioning the parison s required for the low temperature required for high orientation is large.

According to a parallel proposal, there are stress cracks in the inner part of the wall of an oriented blown container is significantly reduced or even eliminated when one considers the type and Modified way in which the parison is injection molded to reflect the remaining orientation or stresses or near the inner surface portions of the parison. According to these proposals, the perforated pin the injection mold is maintained above a temperature at which significant stresses are not maintained. The cavity the extrusion mold can be cooled in the conventional manner for low cycle times because of mold-induced residual stresses in the outer parts of the parison due to the lower degree of stretching that the outer parts of the container experience subject to blowing can be better tolerated. The stick will be at a temperature well above the glass transition temperature (Tg) of the polymer, with the result that the inner part of the parison during the entire period ^ during which the polymer is being injected remains in a liquid or semi-liquid state. Residual stresses at or near the inner surface parts are minimized in such conditions.

The cooled cavity of the extrusion mold causes a rapid solidification of the outer part of the parison, whereby a temporary rigid skin is obtained that is thick enough that structural integrity is imparted to the parison when it is removed from the Mold cavity and removed from the punch pin to avoid a distortion of the formed parison.

-8th-

709830/0747

Significant savings in energy and time and a desired temperature distribution of the parison are achieved by prompt transfer of the parison from the injection mold in a temperature conditioning station compared to the reheating technique described above in which the Külbel is stored at ambient temperature and later brought to the blowing temperature. An injection molded parison that is used for a reheating process is provided must be in the injection mold be cooled so that it becomes sufficiently rigid that it is self-supporting once it has left the mold. In contrast, a parison which is used in the method according to the invention does not require such an extent of cooling as since the rigid skin formed by the rapid cooling of at least the outer surface is sufficient Carrier yields and lasts long enough to allow transfer of the bucket to a carrier pin. Consequently becomes the time required for cooling in the injection mold versus that required for making a suitable one Parison required for a reheating process is significantly reduced. In addition, that opposite time and energy can be saved in a reheating process, since the heat supplied during injection molding is used for temperature conditioning of the parison is used for blowing. It takes less time and energy to break one from injection molding temperature conditioning of the still warm container than required to reheat a pail from room temperature storage. The time span for the entire cycle from Splash up to the blown bottle is reduced from that of a reheating process. In a similar way are opposed to better properties due to better temperature control and better economic timing realized by the technique described above in which the parison is retained on the pin of the injection mold and directly is blown by the pin into the cavity of a blow mold.

709 830/0747

2702Λ95

The invention is explained with reference to the accompanying drawings. Show it:

1 shows a cross section of a parison,

FIG. 2 shows a cross section of a bottle which has been blown from the parison of FIG. 1,

3 shows a schematic cross section of the cavity and the perforated pin for injection molding the parison shown in FIG. 1,

Figure 4 is a schematic partial cross-section of the pin of the blow mold and the temperature conditioning chamber for temperature conditioning of the parison for biaxial orientation during blowing,

Figure 5 is a schematic cross-section of the pin of the blow mold and cavity showing the parison partially has been blown into the shape of the bottle according to Figure 2,

Fig. 6 is a diagram of the temperature distribution in the wall of the Külbels at different stages of the process and

7 shows a diagram for comparing the temperature distributions of buckets treated according to the invention with the ideal one Parison and with parison according to another technique.

The parison 10 shown in Figure 1 is a tube with a closed End that has a shape suitable for blowing a bottle. The parison 10 includes a neck end portion 12 which is in the Shape is shown how it is used for a bottle with a crown cap

-10- 709 830/0747

is turned. The neck end can also have a different shape, for example in the form of a thread for screw caps are present. The wall thickness varies along the axial length of the parison according to known principles to give the corresponding wall thickness of the finished bottle. To have a stronger biaxial To effect stretching, the parison can be shorter in the axial direction than the length of the finished bottle.

The parison 10 is formed in a shape shown in FIG. The injection mold includes an axially reciprocating pin portion 40 and a fixed extrusion molding 30. The extrusion molding 30 includes a block 32 having a cavity 34 with the shape of the exterior of the parison 10. The cavity contains a configuration 36 for the neck end. A heat exchange medium is circulated through lines 39a, b and c to and from channels 38 in block 32 surrounding cavity 34, in order to rapidly cool the exterior of the injection molded parison to a temperature of about -1.1 to about 37.8 ° C to allow the To give parison a sufficient rigidity that its removal from the injection mold is facilitated. A spray bar 35 directs the molten polymer at the melt processing temperature into the cavity 34 under high pressure.

The reciprocating member 40 includes an injection mold piercer 42, the outer shape of which is in harmony with the interior of the parison. The pin 42 is coaxial with the cavity 34 carried by a reciprocating plunger structure 44. The interior of the pin 42 is hollow and contains a central one Source tube 46 communicating with conduit 47a which is a temperature controlled heat exchange medium, e.g. an oil that directs towards the tip of the pen. The medium flows from the tip of the pen back outwards

-11- 709 830/0747

half of pipe 46 and is drained through line 47b. The drained medium can in turn be temperature-conditioned and
to be led back.

In operation, the injection mold is closed by moving the pin 42 into the cavity 34. Polymer at melt processing temperature is injected into the chamber at high pressure
the pin 42 and the cavity 34 are injected. The sweeter surface of the parison formed in this way is enhanced by the
cold cavity 34 of the extrusion die cooled and receives a
sufficient rigidity that the parison can be ejected from pin 42 when the mold is open. The circulating heat exchange medium maintains the pin 42 at the desired surface temperature.

As shown in Figure 4, the molded parison 10 is then immediately transferred to a temperature conditioning station where it is held on a temperature conditioning pin 52 in a temperature conditioning cavity 54 with heaters or conduits 56 for a heat exchange medium. The tea temperature conditioning pen and cavity fit snugly with the KGTbel
together so that good heat transfer is obtained. Of the
Temperature conditioning pen may also contain heat exchange media channels or heaters (not shown). the
Temperatures of conditioning pin 52 and cavity 54 are maintained so that the parison is temperature conditioned so that it is brought to a desired temperature gradient within the orientation temperature range that molecular orientation is obtained when the parison is blown
will. The temperature conditioning pen also contains channels
57 for the compressed gas that is used to inflate the parison in the subsequent stage. Since the inside of the parison is stretched to a greater extent than the outside during blowing,

-12- 709830/0747

a more uniform orientation through the thickness of the wall of the bottle can be obtained by giving such a parison Temperature gradient means that the inside is hotter than the outside. In US-PA's 319 380 and 597 678 Details are given regarding the pump temperature conditions necessary for molecular orientation during blowing are suitable.

After the temperature conditioning, the parison is on the pen 52 is transferred to a blow mold 60, which is shown in FIG. 5 and which contains the halves 63, 65. The halves 63, 65 of the Blow molds define a cavity 62 which is the shape of the finished bottle. A coolant can be circulated through the lines 64 to cool the surfaces of the blow mold cavity. Air or another pressurized gas is passed through the channels 57 of the pen 52 to inflate the temperature-conditioned parison 10, which is shown partially inflated in FIG. Inflation continues until the stretched parison is forcibly brought into contact with the cool walls of cavity 62 where the polymer is rapidly cooled and solidified. The halves 63, 65 of the mold are then separated and the finished bottle is taken out. Because the inflation occurs when the parcel is at temperatures within of the orientation temperature range and the bottle walls are biaxially stretched, the bottle is biaxially oriented as a result.

According to the invention, the parison is removed from the die pin 42 of the injection mold while the polymer has sufficient heat from it The injection molding process is maintained and the parison is immediately placed on the temperature conditioning pin 52 without intentional cooling placed in the temperature conditioning station where the temperature conditioning pen 52 and the temperature conditioning

-13- 709 830/0747

Rungshöhlung 62 are regulated so that the inner and the outer surface of the parison can be brought to temperatures that have a temperature distribution or a temperature gradient result in the wall of the parison, which is sought to obtain the desired degree of orientation in the blowing stage.

FIG. 6 shows a typical temperature distribution in the wall of a typical parison at different points in time during the operating cycle. The parison is molded with a melt processing temperature on the order of 204 ^{° C.} When it leaves the injection mold, then the temperature ranges from about 149 ° C on the inner surface has a maximum internal temperature of about 188 ⁰ C to a temperature of the outer surface area of about 10.0 ⁰ C. During the temperature conditioning stage of the injection molding stage retained heat redistributed in that the inner surface to a temperature of about 110 ⁰ C, the interior to a temperature of about 149 ° C and the outer surface are brought to a temperature of about 93 "C 3. During the interval between the end of the temperature conditioning step and the start of blow mold inflation, heat continues to flow within the parison, bringing the internal temperature down to approximately 138 ° C and the external surface temperature to approximately 110 ° C. The temperature of the inner surface changes little because it is still in intimate contact with the temperature-regulated pin 52.

In FIG. 7, the bulb temperature distribution is shown just before the blowing of a parison immediately transferred according to the invention (Curve A) compared with that of a parison retained on the pin of the injection mold for the blow stage is (curve B). The latter is hereinafter referred to as "the same pin bulb". The cycle times of 17 seconds are identical. In FIG. 7, the envelope (curve C) of the as

-14- 709 830/0747

ideally assumed temperature distributions are shown.

The same pen bowl (curve B) is hotter than desired on the inside surface and it is considerably higher inside than that a uniformly high degree of molecular orientation could be obtained.

From Figures 6 and 7, the conclusion can be drawn that according to the invention, the heat of deformation for temperature conditioning can be redistributed, thereby reducing the cost of a reheated parison the energy and the cycle time can be obtained. The temperature distribution is for the same cycle time span of a tub according to the invention is better suited for high molecular orientation than a tub of the same Pin is blown where it has been shaped. The amount of time it takes for the tub to reach ambient temperature Bringing to temperatures suitable for high molecular orientation is on the order of magnitude of several min.

Bottles were blown from seven different polymeric materials. For each polymer, the parisons were injection molded and immediately transferred to a temperature conditioning pen. The parcels were temperature conditioned to achieve high levels of molecular orientation when using bottles a capacity of approximately 283 ml and blown with a standard shape became. The weight of the bottles was 22 to 23 g. The bottles made from any polymeric material were made in two orientation ranges of about 35.2 kg / cm and about 45.7 kg / cm F blown. F measured according to ASTM standard D 1504.

709 830/0747

a) Injection molding:

The pellets made of the polymeric material were shaped with a water content of about 0.3%. The parisons were molded on a 75 ton reciprocating screw injection molding machine (Model 75-6, manufactured by Farrel Company Division, 565 Blossom Road, Rochester, New York, 14610). The screw of the machine was of the PVC type and it had a compression ratio of 1.45: 1. The shape used is shown in FIG. The molten polymeric material was injected into the mold cavity through a ridge 35. The extrusion mold 32 was ^{cooled down to 4.4 °} C. at the closed end of the parison by cold water which circulated through the lines 39 a, b, c and channels 38. The temperature of the pin 42 was controlled by hot oil circulating through line 47a, through tube 46, and back along the outside of tube 46 to line 47b. The total molding cycle time was held between 13 and 18 seconds, with actual polymer injection times being between 1 and 1 1/2 seconds.

b) Temperature conditioning:

Within 3 to 8 seconds after opening the injection mold the still warm parisons are transferred to a temperature conditioning and blow molding pen 52, which is shown in FIG. The bias pin 52 fit snugly inside the parison, see above that good heat transfer was obtained. The blow pin 52, which carried a parison 10, was turned into a tight fitting thermal Conditioning cavity 54 introduced. The cavity 54 had five independently temperature regulated zones along the longitudinal axis on. These zones were heated by hot oil circulating through channels 56. The temperature of the blow pen was regulated by internal electric heaters. The tubs were

-16- 709830/0747

because it is temperature-conditioned over a period of time that corresponds to the Injection molding cycle came close. (13 to 18 see). The temperatures of the The cavity 54 and blow pin 52 were regulated so that orientation values of about 35.2 kg / cm to 45.7 kg / cm in the following Blown stage were obtained.

c) bubbles:

Upon completion of the temperature conditioning step, the blow pin 52 with the parison 10 held thereon came out of the • Temperature conditioning cavity 54 transferred into a blowing station similar to that shown in FIG. The kolbel was introduced by inflated by air under pressure through the channels 57 in the blow pin 52. The pods started at the top or finished end to inflate and the inflation then progressed towards the tip, using the inflation air pressure was maintained between 3.52 and 5.27 kg / cm. Close to the end of the

Blowing cycle, the air pressure was increased to about 10.5 kg / cm ensure that the bottles conform to the shape of the cavity 52 of the blow mold. At the end of each cycle, the etv / a It took 16 seconds to release the pressure and the bottle was removed from the mold.

d) Specified values:

The finished bottles were tested according to ASTM Standard D-1504 to determine the orientation release stress (SFT) in the top, bottom, and central areas of the side wall of the bottle. Bottles were made from each polymeric material used in the areas that
were most susceptible to cracking due to

p Ο

had average OFS values of 35.2 kg / cm and 45.7 kg / cm.

-17-709830 / 0747

-Vf-

Table I lists the names and, if known, the approximate compositions of the various polymeric materials.

The nitrile polymers from which the above bottles were made were measured for melt flow rate, extrusion die swell and glass transition temperature. The polymers had a uniform moisture content of 0.3 #, to minimize variations due to moisture content. The results obtained are shown in Table I.

The melt flow rate was determined according to ASTM-Nora D-1238-70, condition F (for this purpose model 3504 Melt Indexer was used used by Monsanto Company, 920 Brown Street, Akron, Ohio 44311). The melt flow rate became approximately 162 ° F measured above the glass transition temperature (Tg).

The extrusion mold swelling is a measure of the elasticity of the polymer melt. The more elastic the material, the bigger it is is the extrusion mold swelling. More resilient materials store more energy and therefore tend to show greater residual stresses during injection molding. The extrusion mold swelling is the percentage increase in the diameter of the extrudate over the diameter of the extrusion orifice. Die swell was determined using the above-described apparatus under the same conditions as in the determination measured the melt flow rate.

The extrusion die swell and melt flow rate for each polymer were measured at the same temperature, approximately 162 ° F above the glass transition temperature, for each polymer to be based on the observed similarities.

-18-709830 / 0747

ten of the polymer properties when they are at the same temperature above the glass transition temperatures of the polymers were measured.

The glass transition temperatures were determined by the permeation method measured. For this purpose, an additional thermomechanical analysis device was installed (du Pont model 943) to a differential thermal analyzer (du Pont 900, available from Instrument Division, E.I. du Pont de Nemours, Wilmington, Delaware 19898) was used. The results obtained are summarized in Table I:

-19- 709830/0747 | j

Table I.

Melt processing temperature

Polymer material

Manufacturer

20O ⁰ C

200 ⁰ C

200 ⁰ C

182 ⁰ C

182 ⁰ C

193 ⁰ C

202 ⁰ C

Vicobar E.L. DuPont de Nemours Partie Plastics Department 429302 Wilmington, Delaware 19898

Vicobar lot 32902 "

Vicobar lot 33202 "

Experimental Rohm & Haas, Inc., Nitrile Re-Philadelphia, Pa. sin batch 19105 SW73-0626

Barex

Lot

309

Vistron Corporation Midland Building Cleveland, Ohio 44115

Cyoopao 900 Borg-Warner Chemicals Parkersburg, W. Va. 26101

Cyoopac 930 "

* not known or not measured

raturation
Tg ( ⁰ C)

20% 80% 10 PHR 99 23 1.6 20% 80% 3 PHR 96 18th 3.3 20%. 80% 0 PHR 98 24 7.2, 23% 74% 0 PHR 101 21 2.6 25%
(Methyl-
acrylate) 75% 9 PHR 69 21 2.5 Yes* Yes* no* 98 14th 2.0 Yes* Yes* Yes* 101 14th 1.4k> O
N) CO
cn

Claims (9)

Claims (1. J Process for the production of a; gT ^ ß-free high molecular-kularorientierte blown container "SETs" containing a nitrile polymeric material, characterized in that a seamless, tubular parison with a closed Forms end of the polymeric material in an injection mold which has an extrusion mold which has a cavity, which surrounds a coaxial pin, and pressurized molten polymeric material into the cavity of the The extrusion mold is injected, the parison is removed from the die pin and the hot parison immediately in contact with a temperature controlled conditioning pen with the inner surface of the parison and a temperature controlled cavity in contact with the outer surface of the parison, the injection molded parison within the orientation temperature range for the polymeric material temperature-conditioned and that the temperature-conditioned parison in a cavity of a blow mold with the shape of the The container inflates and the polymeric material to an orientational release tension in the circumferential direction of at least 35.2 kg / cm (500 psi) molecularorie deforms the shape of the container. 35.2 kg / cm (500 psi) molecularly oriented and the material in 2. The method according to claim 1, characterized in that after the temperature conditioning the parison while he is on the temperature conditioning pen is transferred into the cavity of the blow mold. 3 · The method according to claim 1, characterized in that the nitrile-containing polymer is acrylonitrile and contains styrene or methyl acrylate. -21-709830 / 0747 ORIGINAL INSPECTED - 34 - 4. The method according to claim 1, characterized in that the extrusion mold of the injection molding ' mold cools to below room temperature to solidify the outside of the parison. 5. Method according to claim 1, characterized in that the parison is removed from the injection mold within 3 to 8 seconds on the temperature conditioning pen convicted. 6. Method of manufacturing blown highly biaxial Molecularly oriented plastic containers, characterized in that a parison with a closed End molded from a molten molecularly orientable polymer in an injection mold that has a cavity an extrusion mold and a pin on v / eist, the parison removes from the injection mold, the parison while he is from the Injection stage is still hot on a temperature conditioning carrier pin brings into heat exchange relationship with a temperature conditioning cavity, temperature conditioning the parison, by setting the temperatures of all areas of the parison to temperatures within the orientation temperature range of the polymer, the temperature-conditioned parison, while it is held on the carrier pin, in a Blast mold cavity with the shape of the container introduces a pressurized medium into the interior of the parison stretching the temperature conditioned parison into the shape of the blow mold cavity to form the container and tall to orientate biaxially molecularly. 7. Process for the production of a highly biaxial molecular-oriented blown container made from a parison injection molded from a molecularly orientable polymer, -22-709830 / 0747 characterized in that the parison, while it is still hot from the injection molding, prior to blowing transferred to a device for temperature conditioning of the parison. 8. Process for producing a highly biaxial molecular-oriented Container in which a parison is injection-molded from a molecularly orientable polymer, the injection-molded one Külbel temperature-conditioned and the container from the temperature-conditioned parison blows, characterized in that the parison while he is of the Injection molding stage is still hot, transferred to a device for performing the temperature conditioning stage. 9. A method of making a molecularly oriented blown container from a nitrile containing polymer Material, characterized in that there is a seamless tubular parison with a closed end from the polymeric material in an injection mold which forms an extrusion mold with a cavity which is a coaxial Surrounding pin, having, and in which pressurized molten polymeric material into the cavity of the extrusion die is injected, the parison is removed from the hole pin of the injection mold and immediately the hot parison into one temperature controlled conditioning pen in contact with the inner surface of the parison and a temperature controlled Cavity in contact with the outer surface of the parison transferred the injection molded parison to a temperature temperature-conditioned within the orientation temperature range of the polymeric material and that the temperature-conditioned Inflates parison in a blow mold cavity with the shape of the container and the polymeric material in -23- 709830/0747 - 33 - The catch direction is molecularly oriented and the material is deformed into the shape of the container. 709830/0747