WO2001094097A2 - Method for producing a container using a form tool with sections of different temperatures - Google Patents
Method for producing a container using a form tool with sections of different temperatures Download PDFInfo
- Publication number
- WO2001094097A2 WO2001094097A2 PCT/DE2001/001995 DE0101995W WO0194097A2 WO 2001094097 A2 WO2001094097 A2 WO 2001094097A2 DE 0101995 W DE0101995 W DE 0101995W WO 0194097 A2 WO0194097 A2 WO 0194097A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- container according
- barrier
- preform
- component
- Prior art date
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4823—Moulds with incorporated heating or cooling means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4823—Moulds with incorporated heating or cooling means
- B29C2049/4838—Moulds with incorporated heating or cooling means for heating moulds or mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4823—Moulds with incorporated heating or cooling means
- B29C2049/4838—Moulds with incorporated heating or cooling means for heating moulds or mould parts
- B29C2049/4846—Moulds with incorporated heating or cooling means for heating moulds or mould parts in different areas of the mould at different temperatures, e.g. neck, shoulder or bottom
- B29C2049/4848—Bottom
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/783—Measuring, controlling or regulating blowing pressure
- B29C2049/7832—Blowing with two or more pressure levels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/786—Temperature
- B29C2049/7864—Temperature of the mould
- B29C2049/78645—Temperature of the mould characterised by temperature values or ranges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
- B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3032—Preforms or parisons made of several components having components being injected
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/12—Stretching rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/28—Blow-moulding apparatus
- B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
- B29C49/36—Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
Definitions
- the invention relates to a method for producing a container from a thermoplastic by blow molding and biaxial orientation, in which a preform is inserted into a blow mold and expanded by the action of a pressure medium, and in which a blow mold comprising at least two blow mold segments and one is used to contour the container Floor insert is used.
- the invention further relates to a container made of a homogeneous thermoplastic material with barrier properties with respect to a wall permeability for gases, which is produced by blow molding from a preform and whose barrier characteristic corresponds to at least one factor BIF> 2, and which is resistant to deformation up to the effect of temperature has at least 60 °, and the has a bottle-like design with an inwardly curved bottom, which is surrounded by a base ring.
- the barrier properties relate here in particular to resistance to the escape of carbon dioxide from an interior of the container into an environment and to the ingress of oxygen from the environment into a liquid stored inside the container.
- Typical methods for achieving a sufficient barrier property are, for example, plasma evaporation with silicon dioxide or carbon-containing materials.
- multi-layer containers of which at least one layer is provided with the increased barrier properties.
- the barrier properties are generally measured compared to the use of standard PET material, and the BIF factor is determined.
- BIF means "Barrier Improvement Factor”.
- a factor of BIF 2 indicates a double barrier effect compared to the use of standard material.
- a general process for blow molding containers is described for example in DE-OS 43 40 291. Possibilities for controlling different blowing pressures are specified in DE-OS 41 13 874. A device for performing the method is described in DE-OS 42 12 583.
- Containers made from preforms can have different properties and uses. Both disposable containers and refillable containers are known. In addition, containers are known which can also withstand elevated temperatures when filling or when carrying out washing and / or pasteurization processes.
- Such a container can be shaped, for example, by first producing a preform from polyethylene terephthalate (PET) using the injection molding process and by heating the preform after intermediate storage and then feeding it to the blow molding station.
- PET polyethylene terephthalate
- preforms from pipe sections which are closed in the area of one end and provided with a suitable mouthpiece in the area of their other end.
- the preform has a significantly smaller shape than the container to be produced. Compressed air is therefore applied to the preform within the blowing station in order to convert it into the container to be produced. In this inflation process, in addition to reducing the wall thickness by increasing the surface area, the material is oriented. This causes the thin Wall of the container has a very high dimensional stability, which makes the container suitable for a variety of uses.
- the main requirement for carbonated soft drinks is to prevent or reduce the escape of carbon dioxide through the container wall to the outside.
- the main requirement is to prevent or reduce the penetration of oxygen through the wall of the container into the stored liquid.
- the substances suitable for improving the barrier properties can have a toxic effect and, therefore, in the case of filling liquids which are intended for consumption, there is direct contact between the liquids and the substances used to improve the barrier properties should be avoided.
- blow mold segments are tempered to an average surface temperature in the range from 40 ° C to 170 ° C and that the floor insert is kept at a temperature below the average surface temperature of the blow mold segments.
- Another object of the present invention is to provide a container of the type mentioned in the introduction in such a way that production with improved barrier properties is supported with inexpensive production.
- the weight of the Barrier component maximum 30% of the weight of the main material component is that the container volume is a maximum of 1 liter.
- the base ring has a material thickness of at least 1 mm and that the container has a base body and a neck, wherein a neck length is at least 20% of the container length and a maximum neck diameter is at most 80% of a maximum diameter of the base body.
- the bottle geometry explained above and the process sequence used in container manufacture make it possible to use a cheap preform to be produced from a homogeneous material and to avoid costly plasma coating processes to produce a plastic container which is more thermally and mechanically resistant than a standard PET bottle and which is provided with barrier properties which in particular support use for the reception of beer or beverages containing beer.
- the higher thermal resistance makes it possible to go through a pasteurization treatment.
- the increased barrier properties make it possible to prevent the penetration of critical amounts of oxygen, or at least to significantly reduce it, when bottling beer.
- Product optimization can be achieved through the combination of the bottle design explained, a design of the shaping blow mold, a design of the preform used as the starting product, the selection of the bottle process to be used and the process sequence when carrying out the blowing process.
- Improved material consolidation in the bottom area of the container can be achieved by a cooling time in the area of the floor insert is at least 2 seconds.
- Improved contour stability can be achieved in that a contour flattening of the container base after blowing makes up a maximum of 25% of the distance of a container base to a center of the base before the blown container is removed from the blow mold.
- the flattened base after pasteurizing accounts for a maximum of 55% of the distance from a container base to a center of the base before the blown container is removed from the blow mold.
- An additional increase in stability can be achieved in that the material thickness in the area of the base ring is at least 1.2 mm.
- Impairment of the quality of the filled product can be avoided by coloring the material at least in some areas.
- Another possibility for reducing the penetration of gas amounts is that a substance for the accumulation of penetrating gases is arranged at least in some areas.
- a simple closure possibility is that an external thread is arranged in the region of a mouth section of the container.
- At least one vent slot is arranged in the area of the external thread.
- the ventilation slot be provided with a rounded contour.
- the mouth section is designed to arrange a crown cap.
- the mouth section is designed for the arrangement of a clip closure.
- a side wall of the container is at least partially curved to an extent of 1% to 2% based on a container diameter in the direction of a container interior.
- a conical course is also considered.
- the inner curvature of the side wall is approximately 1.4%.
- a penetration rate of harmful gases can be further reduced by arranging a substance for the attachment of at least one penetrating gas in the area of a container closure.
- a typical material selection is that PET is used as the main material component.
- PEN is used as the main material component.
- Particularly good barrier properties can be achieved by using nylon as the barrier component.
- EVOH is used as the barrier component.
- PEN is used as the barrier component.
- An expanded range of materials is provided by using a PET as a barrier component
- Copolymer with increased isophthalic acid content is used.
- a barrier can be increased by embedding particles in the polymer matrix by using a polymer mixture with solid particles as the barrier component.
- 1 a longitudinal section through a preform
- 2 a partial longitudinal section through a container designed as a bottle
- FIG. 3 shows a perspective view of the container according to FIG. 2 when viewed obliquely from below
- Fig. 4 a longitudinal section through a blow mold in which a preform is stretched and expanded
- Fig. 5 a sketch to illustrate a basic structure of a device for blow molding containers.
- a preform (1) consists of a mouth section (2), a support ring (4) separating the mouth section (2) from a neck area (3), and a neck area (3) into a wall section (5) overlapping shoulder area (6) and a floor (7).
- the support ring (4) projects beyond the mouth section (2) transversely to a preform longitudinal axis (8).
- the outer diameter of the preform (1) widens from the neck area (3) in the direction of the wall section (5).
- the wall section (5) essentially forms the side wall of the container.
- the bottom (7) is rounded.
- the mouth section (2) can, for example, be provided with an external thread (12) which enables a screw closure to be placed on the finished container (13).
- an outer bead in order to create an area of attack for a crown cap. Beyond that too a variety of other designs conceivable to enable plug-in closures to be attached.
- the wall section (5) has an inner surface (9) and an outer surface (10).
- the inner surface (9) delimits a preform interior (11).
- the thickness of a preform wall (14) can extend from the neck area (3) in the direction of the wall area (5) with increasing wall thickness.
- the preform (1) has a preform length (15) in the direction of the preform longitudinal axis (8).
- the mouth region (2) and the support ring (4) extend in the direction of the preform longitudinal axis (8) with a common mouth length (16).
- the neck area (3) has a neck length in the area of the preform longitudinal axis (8)
- the preform (1) has a wall thickness (18) in the wall area (5) and a floor thickness (19) can be found in the area of the bottom (7). A further dimensioning of the preform (1) takes place with the help of an inner diameter (20) and an outer diameter (21), which are measured in the approximately cylindrical wall area (5).
- the mouth section (2) and the support ring (4) can be found essentially unchanged.
- the further region of the container (13) is expanded relative to the preform (1) by the biaxial orientation carried out both in the transverse direction and in the longitudinal direction.
- the container (13) has a container length (22) and has a container diameter (23) which, in view of the accuracies to be taken into account, is not to be differentiated below with regard to the specific inner diameter or outer diameter.
- Fig. 2 shows, among other things, the bottom area of the blow-molded container (13).
- the container (13) has a side wall (24) and a container base (25).
- the container bottom (25) consists of a standing ring (26) and a dome (28) which is curved inwards in the direction of a container interior (27).
- the dome (28) is formed from a dome slope (29) and a center (30).
- the container (13) has a container mouth length (31) and a container neck length (32), at least the
- Container mouth length (31) is usually equal to the mouth length (16) of the preform (1).
- Heating the preform (1) before the orientation process is conceivable in different variations.
- the temperature is only dependent on the length of stay.
- radiant heaters which act on the preform (1) with infrared or high-frequency radiation. With the help of such radiators it is possible to generate a temperature profile in the area of the preform (1) in the direction of the longitudinal axis (8).
- Such a radiant heater is formed from a plurality of independently controllable heating elements which are arranged one above the other in the direction of the longitudinal axis (8), more intensive control of the heating elements in the region of the upper extent of the preform (1) in the direction of the mouth section (2) in the thickened In the area of the wall section (5), a higher thermal energy is radiated than in the area of the wall section (5) which faces the floor (7).
- radiant heaters which can only be controlled uniformly, such heat profiling can also be achieved by arranging the heating elements at different distances in the direction of the longitudinal axis (8).
- Fig. 3 shows the container (13) in a perspective view from below.
- the container neck (33) widens starting from the support ring (4) in the direction of a container shoulder (34).
- the container shoulder (34) which widens starting from the container neck (33) towards a base body (35) is transferred from a shoulder (36) into the base body (35).
- the base body (35) is transferred via a further shoulder (37) into a bottom taper (47) which is delimited by the standing ring (26) in the area of its extension facing away from the base body (35).
- FIG. 4 The basic structure of a device for shaping the preform (1) into the container (13) is shown in FIG. 4.
- the device for forming the container (13) consists essentially of a blow molding station (38) which is provided with a blow mold (39) into which a preform (1) can be inserted.
- the preform (1) can be an injection molded part made of polyethylene terephthalate.
- the blow mold (39) consists of blow mold segments (40, 41) and a bottom insert (42) which can be positioned by a lifting device.
- the Preform (1) can be held in the area of the blowing station (38) by a transport mandrel (43) which, together with the preform (1), passes through a plurality of treatment stations within the device.
- connection piston (not shown) is arranged below the transport mandrel (43), which supplies compressed air to the preform (1) and at the same time seals against the transport mandrel (43).
- a connection piston (not shown) is arranged below the transport mandrel (43), which supplies compressed air to the preform (1) and at the same time seals against the transport mandrel (43).
- the preform (1) is stretched using a stretching rod (44) which is positioned by a cylinder.
- a stretching rod (44) which is positioned by a cylinder.
- the use of curve segments is particularly expedient when a plurality of blowing stations (38) are arranged on a rotating blowing wheel (53).
- the use of cylinders is expedient if there are blowing stations (38) arranged in a fixed position.
- FIG. 4 the use of separate thread inserts (45) in the area of the blow mold (39) is provided to adapt to different shapes of the mouth section (2).
- a developing bladder (46) is also shown.
- Fig. 5 shows the basic structure of a blow molding machine with a rotating heating wheel (52) and a rotating blowing wheel (53) is provided.
- the preforms (1) are transported by transfer wheels (55, 56) into the area of the heating wheel (52).
- Radiant heaters (57) and blowers (58) are arranged along the heating wheel (52) in order to temper the preforms (1).
- the preforms (1) After the preforms (1) have been adequately tempered, they are transferred to the blowing wheel (53), in the area of which the blowing stations (38) are arranged.
- the finished blown containers (13) are fed to a delivery section (59) by further transfer wheels.
- thermoplastic material can be used as the thermoplastic material.
- PET PET, PEN or PP can be used.
- the preform (1) expands during the orientation process by supplying compressed air.
- the compressed air supply is divided into a pre-blowing phase, in which gas with a low pressure level is supplied, and a subsequent main blowing phase, in which gas with a higher pressure level is supplied.
- Compressed air with a pressure in the interval from 5 bar to 25 bar is used during the pre-blowing phase and compressed air with a pressure in the interval from 25 bar to 40 bar is fed in during the main blowing phase.
- Inside the blown Container usually results in a pressure in the range of about 2 bar to 10 bar during the pre-blowing phase.
- the blow molding station (38) With a form locking device, which avoids a gap formation in the area of the boundary surfaces of the blow mold segments (40, 41) despite the internal pressure acting during the main blowing phase ,
- the length of the container neck (32) is at least 20% of the total length of the container (13).
- a maximum diameter of the container neck (33) is at most 80% of the maximum diameter of the container (13).
- the preform (1) for the manufacture of the container (13) can be provided with a coloring in such a way that the transmission of light is reduced at least in a wave range which is harmful with regard to the product to be filled.
- the preform (1) has a long conical area below a short cylindrical section below the support ring (4).
- Ventilation slots (48) in the area of an external thread (49) of the mouth section (2) are preferably provided with a rounded contour in order to reduce notch effects when exposed to internal pressure.
- the thread can be reinforced by a reduced inside diameter in the region of the mouth section (2).
- a typical container length (22) is in the range from 200 mm to 300 mm.
- a container length in the range of approximately -250 mm is preferred.
- the container neck length (32) is at least 20% of the container length (22).
- a diameter of the container neck (33) in the area of a transition to a container shoulder (50) is a maximum of 80% of a maximum Container diameter.
- An outer contour of the container neck with a conical configuration runs between the container shoulder (50) and the mouth section (2). The expansion takes place starting from the mouth section (2) towards the container shoulder (50).
- the conical shape of the neck of the container takes place essentially along a circular contour with a radius of less than 500 mm. A radius in the range of approximately 350 mm is preferred. A curvature transition between the container neck and the container shoulder (50) takes place with a radius of curvature ⁇ 30 mm. A typical curvature is in the range of a radius of curvature of 15 mm. In general, such a radius can preferably be in the range from 10 mm to 20 mm.
- a course of curvature in the area of the container shoulder (50) typically runs with a radius of curvature of ⁇ 60 mm.
- a curvature interval with a radius of curvature in the range from 25 mm to 35 mm is typical, for example the radius can be 30 mm.
- the container shoulder (50) is passed through a shoulder (51) into the side wall (24).
- An angle of inclination in the area of the shoulder (51) is typically below 60 °.
- the side wall (24) is transferred into a base part (61) via a further shoulder (60).
- the angle of inclination of the heel (60) is below 60 °.
- a dome height of the dome (28) measured between a lower boundary of the base ring (60) and the center (30) is typically more than 8 mm. A value of about 12 mm is typical.
- a course of curvature in the region of the dome slope (29) typically has a radius of curvature of 20 mm to 60 mm. A value of around 40 is typical mm.
- the contour of the dome slope (29) is defined in cross section by two eccentric radii.
- Respective associated circle centers have a lateral offset with respect to the longitudinal axis of the container. The lateral offset is at least 3 mm. A typical value is around 6 mm.
- Radius of curvature is at least 0.65 times the diameter of the base ring.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01943154A EP1286818A2 (en) | 2000-06-06 | 2001-05-22 | Method for producing a container and container having barrier properties |
BR0111416-6A BR0111416A (en) | 2000-06-06 | 2001-05-22 | Process for manufacturing a container as well as container with barrier properties |
AU2001265815A AU2001265815A1 (en) | 2000-06-06 | 2001-05-22 | Method for producing a container and container having barrier properties |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10027924.4 | 2000-06-06 | ||
DE10027924A DE10027924A1 (en) | 2000-06-06 | 2000-06-06 | Blow-molding thermoplastic container with gas barrier properties, controls temperatures of blow molding segments and base inserts to specified levels |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001094097A2 true WO2001094097A2 (en) | 2001-12-13 |
WO2001094097A3 WO2001094097A3 (en) | 2002-06-20 |
Family
ID=7644826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/001995 WO2001094097A2 (en) | 2000-06-06 | 2001-05-22 | Method for producing a container using a form tool with sections of different temperatures |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1286818A2 (en) |
AU (1) | AU2001265815A1 (en) |
BR (1) | BR0111416A (en) |
DE (1) | DE10027924A1 (en) |
WO (1) | WO2001094097A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102248670A (en) * | 2011-04-29 | 2011-11-23 | 广州达意隆包装机械股份有限公司 | Blank temperature collection method for bottle blowing machine |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005077767A1 (en) * | 2004-02-16 | 2005-08-25 | Dover Fisheries Pty Ltd | Container to preserve food |
DE102006032140A1 (en) | 2006-07-12 | 2008-02-21 | Sig Technology Ltd. | Method and apparatus for blow molding containers |
FR3011498B1 (en) * | 2013-10-09 | 2016-07-29 | Sidel Participations | DEVICE FOR GRIPPING A CONTAINER COMPRISING A NOSE IN WHICH EXPANSION DATES ARE PRESERVED CIRCONFERENTIALLY IN POSITION |
EP3448766A4 (en) * | 2016-04-25 | 2020-01-15 | Amcor Rigid Plastics USA, LLC | Polymeric spirits container |
Citations (9)
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DE2933639A1 (en) * | 1979-08-07 | 1981-03-12 | Yoshino Kogyosho Co., Ltd., Tokyo | Blow moulding bottles from saturated polyester - including maintaining the blown article against the mould for a short time to stabilise it |
US5217737A (en) * | 1991-05-20 | 1993-06-08 | Abbott Laboratories | Plastic containers capable of surviving sterilization |
EP0731030A1 (en) * | 1995-03-09 | 1996-09-11 | Mitsui Petrochemical Industries, Ltd. | Bottle from polyester composition and process for producing the same |
US5560943A (en) * | 1992-09-22 | 1996-10-01 | Pepsico., Inc. | Apparatus for annealing and blowing a thermoplastic biaxially oriented container |
US5750224A (en) * | 1991-07-01 | 1998-05-12 | Plm Ab | Plastic container |
US5762981A (en) * | 1996-09-10 | 1998-06-09 | Wentworth Mould And Die Company Limited | Base for a mold assembly |
WO1998029314A1 (en) * | 1996-12-30 | 1998-07-09 | Carlsberg A/S | Polymer bottle closed by crown cap or such like |
US5888598A (en) * | 1996-07-23 | 1999-03-30 | The Coca-Cola Company | Preform and bottle using pet/pen blends and copolymers |
DE19843053A1 (en) * | 1998-09-19 | 2000-03-23 | Krupp Corpoplast Masch | Mass production of blow-molded bottles treats each bottle individually, recognizing different processing histories, especially in terms of temperature, which each has undergone on a practical processing line |
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DE1143993B (en) * | 1959-03-10 | 1963-02-21 | Stefan Fischer | Device for producing bottles or the like made of thermoplastic material |
US3870181A (en) * | 1973-02-12 | 1975-03-11 | Monsanto Co | Molecularly oriented bottle |
DE2926044C2 (en) * | 1979-06-28 | 1984-03-29 | Owens-Illinois, Inc., 43666 Toledo, Ohio | Method and apparatus for manufacturing a container from polyethylene terephthalate |
US5290506A (en) * | 1991-04-30 | 1994-03-01 | Nissei Asb Machine Co., Ltd. | Process of injection stretch blow molding hollow article having thick-walled bottom |
JPH0768629A (en) * | 1993-09-06 | 1995-03-14 | Mitsubishi Plastics Ind Ltd | Molding method for bottle with grip |
DE19545024B4 (en) * | 1995-12-02 | 2005-02-17 | Sig Corpoplast Gmbh & Co. Kg | Process for the production of containers |
JPH09277359A (en) * | 1996-04-19 | 1997-10-28 | Mitsubishi Plastics Ind Ltd | Molding of handled bottle |
DE19654658A1 (en) * | 1996-12-28 | 1998-07-02 | Krupp Corpoplast Masch | Handling flangeless pressure injection mouldings, preforms and plastic bottles during e.g. production, blowing etc. |
WO1998058790A1 (en) * | 1997-06-20 | 1998-12-30 | Schmalbach-Lubeca Pet Centre Technique Et De Recherche S.A.S | Manufacturing process for heat set multilayer containers |
DE19909644A1 (en) * | 1999-03-05 | 2000-09-07 | Krupp Corpoplast Masch | Method and device for blow molding containers |
-
2000
- 2000-06-06 DE DE10027924A patent/DE10027924A1/en not_active Withdrawn
-
2001
- 2001-05-22 WO PCT/DE2001/001995 patent/WO2001094097A2/en not_active Application Discontinuation
- 2001-05-22 AU AU2001265815A patent/AU2001265815A1/en not_active Abandoned
- 2001-05-22 BR BR0111416-6A patent/BR0111416A/en not_active Application Discontinuation
- 2001-05-22 EP EP01943154A patent/EP1286818A2/en not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2933639A1 (en) * | 1979-08-07 | 1981-03-12 | Yoshino Kogyosho Co., Ltd., Tokyo | Blow moulding bottles from saturated polyester - including maintaining the blown article against the mould for a short time to stabilise it |
US5217737A (en) * | 1991-05-20 | 1993-06-08 | Abbott Laboratories | Plastic containers capable of surviving sterilization |
US5750224A (en) * | 1991-07-01 | 1998-05-12 | Plm Ab | Plastic container |
US5560943A (en) * | 1992-09-22 | 1996-10-01 | Pepsico., Inc. | Apparatus for annealing and blowing a thermoplastic biaxially oriented container |
EP0731030A1 (en) * | 1995-03-09 | 1996-09-11 | Mitsui Petrochemical Industries, Ltd. | Bottle from polyester composition and process for producing the same |
US5888598A (en) * | 1996-07-23 | 1999-03-30 | The Coca-Cola Company | Preform and bottle using pet/pen blends and copolymers |
US5762981A (en) * | 1996-09-10 | 1998-06-09 | Wentworth Mould And Die Company Limited | Base for a mold assembly |
WO1998029314A1 (en) * | 1996-12-30 | 1998-07-09 | Carlsberg A/S | Polymer bottle closed by crown cap or such like |
DE19843053A1 (en) * | 1998-09-19 | 2000-03-23 | Krupp Corpoplast Masch | Mass production of blow-molded bottles treats each bottle individually, recognizing different processing histories, especially in terms of temperature, which each has undergone on a practical processing line |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 06, 31. Juli 1995 (1995-07-31) & JP 07 068629 A (MITSUBISHI PLASTICS IND LTD), 14. März 1995 (1995-03-14) * |
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 02, 30. Januar 1998 (1998-01-30) & JP 09 277359 A (MITSUBISHI PLASTICS IND LTD), 28. Oktober 1997 (1997-10-28) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102248670A (en) * | 2011-04-29 | 2011-11-23 | 广州达意隆包装机械股份有限公司 | Blank temperature collection method for bottle blowing machine |
Also Published As
Publication number | Publication date |
---|---|
DE10027924A1 (en) | 2001-12-13 |
EP1286818A2 (en) | 2003-03-05 |
AU2001265815A1 (en) | 2001-12-17 |
WO2001094097A3 (en) | 2002-06-20 |
BR0111416A (en) | 2003-06-10 |
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