MXPA99003905A - Method and mould tools for injection moulding a plastics material part in a packaging sheet material - Google Patents

Abstract

A method of injection moulding a plastics material opening device (26;126;226) in a hole provided in a packaging sheet material (8) including mutually arranging a first mould tool (2;102;202) and a second mould tool (4;104;204) so as to form a mould cavity in which the hole edge (12) is arranged and so as to bias a sheet portion (8a) of the packaging sheet material arranged adjacent the hole edge away from the second mould tool, and injecting heated thermoplastics material into the mould cavity so as to form the plastics material opening device. The biasing of the sheet portion away from the second mould tool aids in the formation of plastics material on the side of the sheet portion disposed towards the second mould tool, for providing a controlled placement of the opening device at the sheet hole.

Description

MOLD METHOD AND TOOLS FOR MOLDING BY INJECTION OF A PART OF PLASTIC MATERIAL IN A PACKAGING MATERIAL FIELD OF THE INVENTION The present invention relates to a method for the injection molding of urja part of plastic material into an orifice, which is placed in a sheet material and packaging, and to the mold tools in an apparatus of Ql eo by injection for the same In particular, a method and mold tools for the injection molding of an aperture device, of synthetic plastic material, to a packaging sheet material is described.

ANTECEDENT (IS OF THE INVENTION Devices with apertures of different types, provided on a packaging container, formed by packaging sheet material and adapted to contain substances such as food products, and in particular to contain liquid beverages such as juices, water, milk, wine are known. , etc. REF. 29919 A device with opening of this type includes a perforation on a wall part of the packaging container and a lidding device of plastic material coupled to the wall part, and covering the perforation in a closed state, the device of ^ lid it includes a circumferential base coupled to the wall part, for example by means of adhesives, circumferentially surrounding the perforation, and a lid element hinged to the base. Once the lid element is opened, the perforation can be coupled, and forced to open, so that the contents within the packaging container can be dispensed therefrom. Another device with known opening includes an opening provided on a wall part of the packaging container and a lidding device of plastic material similar to one described above coupled to the wall part, and covering the opening in a closed state. A sealing member such as an aluminum pull tab is connected to the wall part to cover the opening, and once the lid element has been opened, the sealing element can be removed to expose the opening. opening to supply the contents of the packaging container.

The methods for providing the opening devices described above on the packaging containers can be: feeding a continuous network of packaging material to a first station in which the perforation or opening on the network is provided, and a second step in which it is. it engages the lid element to the net, to cover the perforation or opening. The pull tab, made of aluminum, if provided, for example to cover the opening, is attached in an iritermedip passage. After the opening devices are provided on the network, packaging containers are formed from the network, filled with the product, and sealed such that the opening devices are accommodated on the containers of finished containers, for the easy access. One example of a machine for forming, filling, and sealing packaging containers is the TB8 filling machine, manufactured by Tetra 3rik Packaging ^ Systems of Modena, Italy. As an alternative to the aperture devices described above, in which a device with a lid of plastic material ^ already formed on the sheet is applied, US Pat. No. 4,725,213 (the description of which is incorporated by reference herein). ) describes a device with opening, of plastic material which is injection molded directly on the sheet of packaging material. In particular, a pair of molding tools move in synchronization around a pre-stamped hole in the sheet, and hot thermoplastic material is injected through an injection passage defined between one of the mold tools and a mold surface. the sheet, and extends along such a surface of the sheet in order to form the device with opening in the pie-shaped hole. The mold tools are shaped so that the device with aperture formed, includes a pair of circumferential flange portions c d one of which is coupled to the§_ opposite surfaces of the sheet at the edge of the pre-stamped hole, thereby engaging the device with opening to the sheet. Although the method and apparatus for providing this latter type of apertured device may be entirely valid, there is a need in the field of apertured devices injected with thermoplastic material for further improvements.

It has been found, for example, that there is a problem in controlling the flow of the thermoplastic material injected into the molding cavity formed by the molding tools to provide adequate positioning of the leaf blade adjacent to the pre-shaped opening, with respect to to the device with opening. In general, the portion of the sheet of the packaging material adjacent the opening has a very low stiffness, and during the injection molding process such a sheet portion is attached to the thermoplastic material at high pressures and temperatures. As a consequence, this portion of the sheet adjacent to the opening has the undesirable tendency to flex and finally end up in random positions in its connection to the injected opening device. What is needed is a method for injection molding a device with an opening of terri-plastics material on a sheet of packaging material, which allows to achieve uniformity and security with respect to the correct positioning of the sheet with respect to the sheet of the device. with opening, The above-described bending tendency of an uncontrolled sheet portion adjacent to the opening, can lead to a situation in which during the injection step of the thermoplastic, the edge in the opening of the hpj portion may be in contact Substantially with one of the mold tools and consequently the plastic material will not flow between such a mold tool and the surface of the sheet portion in contact therewith. As a result, the edge of the opening will be sealed in a more deficient manner than would be an apertured edge in which the plastic material of the apertured device extends at least with a certain portion along the surface of the portion. of the sheet adjacent to the opening. In general, the packaging sheet material is formed of several layers including an inner paper layer and two outer synthetic plastic coating layers, one of which is intended to form a contact surface with the product. Other possible layers such as printing ink layers, lamination layers and layers of aluminum foils can be interposed between the paper layer and the outer coating layers, When the opening in the packaging sheet material is stamped, the layers Inner parts of the packaging sheet are exposed at the edge of the opening, and unless such edge is adequately sealed by the injected thermoplastic material opening device, the packaged product may come into contact with the inner layers of the material. of packaging sheet, prpvpcandc possibly the damage to it. What is needed is a method for the injection molding of an aperture device, of thermoplastic material on a sheet of packaging material, which allows to ensure that an adequate seal is obtained by the device with injected aperture, and the edge of the aperture formed in the sheet of packaging material.

DESCRIPTION OF THE INVENTION According to a preferred aspect of the invention, there is provided a method of injection molding a portion of plastic material in an orifice of a packaging sheet material, which includes accommodating a first mold tool and a second tool. mold in contact with opposite sides of the packaging material, to form a mold cavity, such that the edge of the hole of the ho a is accommodated in the mold cavity, and such that the packaging sheet material accommodated adjacent At the edge of the hole, it is moved away from the second mold tool, and the injection of plastic material into the mold cavity to form the part of plastic material. The deviation of the packaging material away from the second mold tool aids the positive formation of plastic material on a portion of the second side of the packaged sheet material accommodated adjacent to the edge portion of the hole, and consequently, a uniformity and safety with respect to the correct positioning of the sheet with respect to the device with opening is obtained. Moreover, the formation of the plastic material on a portion of the second side near the edge of the hole, efficiently creates an excellent seal at the edge of the hole and on the second side, which helps to ensure that the product will not come in contact with the layers. of the material nox as long as the second side of the packaging sheet material is intended to be a contact surface with the food in the final packaging container. According to another preferred aspect of the invention, a first mold tool and a second mold tool are provided, which are mutually accommodatable with respect to the packaging sheet material in a molding position, such that the sheet material of A or S is sealingly placed between the first and second mold tools, and such that it forms a mold cavity by the first and second mold tools, in which at least a portion of the edge of the mold orifice is accommodated. Packaging material of heja. The first and second mplde tools have a mplde'p configuration in the molding position, such that the packaging sheet material accommodated adjacent to the mold portion of the hole is deviated away from the second mold tool, whereby plastic material is formed on a portion of the second side of the packaging sheet material accommodated adjacent to the edge portion of the hole. In a preferred embodiment, the molding configuration of the first and second mold tools, in the molding position, includes an edge of the first mold tool which contacts the first side of the packaging sheet material in a first line of contact, and an edge, of, the second molding tool which is born contact with the second side of the packing material on a second contact line, such that the first contact line is accommodated further away from the edge of the hole that the second contact line. The mold configuration further includes a clearance formed between the first and second mold tools, to sealingly accommodate the packaging sheet material, in which the free space has a width dimension that is smaller than an average thickness of the packaging material, with which the packaging sheet material is packed in the free space in the mpldep sieve, This particular configuration is such that the accmPdadP packaging sheet material adjacent to the prificic berde is sealed. at an angle with respect to the extension plan of the packaging material accommodated substantially outside the mold cavity, whereby the advantageous desyiation action on the mold is achieved. According to a preferred embodiment of the invention, the molding configuration of the first and second mold tools includes a free space formed between the first and second mold tools, to accommodate the packaging sheet material, in which the spread free has an extension lying in a plane that extends angularly in the cavity of the mold, in a direction extending away from the second mold tool, whereby the action of advantageous deflection of the sheet is achieved. The technical features and advantages of the present invention will become apparent to those skilled in the art from the following detailed description of some preferred embodiments thereof, described and illustrated in the accompanying drawings, by way of example only, limiting p , where similar reference numbers indicate similar parts.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a sectional side elevation view of a mold tool configuration, for injection of an aperture device, of thermoplastic material, onto a sheet of packaging material according to a preferred aspect of the invention; Figure 2 is an enlarged, sectional side elevation view of the "A" detail of Figure 1, showing a portion of the sheet adjacent to a hole in the sheet placed within a mold cavity, formed by mold tools before injection of thermoplastic material; FIG. 3 is an enlarged detail view similar to the detail of FIG. 2, showing the sheet accommodated in the mold cavity after injection of the thermoplastic material opening device; Figure 4 is an enlarged detail view similar to the detail of Figure 2, showing the mold tools according to the preferred aspect ctrp of the invention, forming a mold cavity within which the sheet is placed before the injection of the thermoplastic material; Figure 5 is an enlarged detail view similar to the detail of Figure 4, showing the sheet accommodated in the mold cavity, after injection of the device with the opening of thermoplastic material; Y Figure 6 is an enlarged detail view similar to the detail of Figure 5, showing the mplde tools according to the preferred aspect of the invention, forming a mold cavity in relation to the sheet, which allows to inject the material thermoplastic on both sides of the sheet.

BEST MODALITIES FOR CARRYING OUT THE INVENTION ¥ With reference to Figure 1, an internal mold tool 2 and a pair of external mold tools 4 and 6 are mutually accommodated with respect to a packaging material 8, in one embodiment of mpldep such that the packaging material is placed between the internal mold tool 2 and the tools, of external mold 4 and 6, and such that a mold cavity 10 is formed by the mold tools in which The edge 12 of an orifice provided in the sheet 8 is accommodated. The mold tools are also acclimated with respect to an injection head 14 of thermoplastic material, so that the hot thermoplastic material can be fed through a channel 16. from the head 14 towards the cavity 10 of the mold, in order to form, after the cooling of the hot thermoplastic material, a device with opening connected to the sheet 8 at the edge 12 of the hole ». The packaging sheet material 8 can be of any type and shape. For example, the sheet 8 can be a continuous network of packaging material, or a blanket blank piece of packaging material, or a flap with packaging material projection, In a preferred embodiment, the sheet 8 is a carrier material of paper covered with synthetic plastic. The mold cavity 10 includes in the embodiment shown, a portion 10a for the formation of a cover portion of the opening device, a portion 10b for the formation of a base portion of the opening COQ device, for connection to the sheet. 8, and a portion 10c for forming a tear edge of reduced thickness of the apertured device, to help release the cap portion from the base portion. The present disclosure relates more particularly to the manner in which the device with aperture is coupled to the sheet 8 at the edge with hole 12 thereof, while the device with aperture can assume any number of different shapes. In the embodiment shown, the edge 12 of the hole is circumferential to completely enclose the hole in the sheet 8, and preferably the entire edge 12 of the hole is accommodated within the base portion 10b of the mold cavity 10 prior to injection, being the base portion 10b also circumferential and having a dimension sufficient to completely enclose the edge 12 of the hole. Preferably, the edge 12 of the hole, the base portion 10b, and the connecting portion 10c are oval-shaped in a longitudinal cross-section that extends substantially parallel to the extension of the sheet, and the cover portion 10a is shaped of oval disc in a longitudinal cross section extending substantially parallel to the extension of the sheet. Furthermore, in the molding position a free or empty space 18 is formed between the mold tools, which preferably has a smaller width dimension than the material thickness 8 of packaging hpj, whereby the sheet 8 is compressed. within the free space and form u? sufficient seal to prevent any significant leakage of the hot thermoplastic material out of the mold cavity 10. The molding position of Figure 1 can be obtained in any number of ways as will be apparent to those of skill in the art. For example, the inner mold 2 can be moved up and down vertically in the direction of the arrow B, and the outer molds 4 and 6 can be moved up and down vertically, and with inward and outward direction. horizpntalmentey according to the directions C and D respectively, while the injection head 14 can remain in an essentially fixed position. When the mold tools are accommodated in a fully open position, the packaging sheet material can be intermittently fed in the direction E to a correct position with the edge 12 of the hole properly aligned, after which the moide tools can be - moved towards a completely closed caption according to the mpldep caption of Figure 1, and the hot thermoplastic material can be fed through the channel 14 of the injection head 14, to fill the cavity 10 of the mold and form the device with opening on the leaf. The release of the mold tools will allow the blade 8 to be fed back in the direction E, to accommodate another hole edge 12 in the proper position, to receive a device with opening, downstream after the devices are provided with opening on the sheet, packaging containers can be formed from the sheet, filled with prpductc, and then sealed. The methods and devices sufficient to feed the sheet 8, to stamp the holes in the sheet 12, to move the mold tools, to inject the hot thermoplastic materials, to form, fill and seal the packaging containers or, are within the reach of those of experience in the art. Figure 2 shows a molding configuration 20 of the internal and external mold tools corresponding to the molding position of Figure 1. The internal mold tool 2 is accommodated in ccntactc with a ladp internp 22 of the hpja 8, while the outer mpl tool 4 is accommodated in contact with an outer side 24 of the sheet 8. The molding configuration 20 of the outer and inner mold tools deflects the portion of the packaging sheet material 8 accommodated adjacent the edge 12 of the hole , away from the internal mold tool 2, Once the deflection of the sheet 8 has been achieved, the hot thermoplastic material can be injected into the cavity 10 of the mold to form an opening device 26 coupled to the edge 12 of the mold. hole in sheet 8 (Figure 3). The deflection of the sheet 8 away from the internp mold tool ensures that a portion 28 of plastic material is formed on a portion 30 of the inner side 22 of the sheet 8 accommodated adjacent the edge 12 of the hole. The deflection of the sheet 8 in the cavity 10 of the mold and the positive formation of the portion 28 of plastic material, provides a uniformity and security with respect to the correct positioning of the sheet 8 with respect to the device with opening 26., since the blade is kept in a correct and deviated position, during the injection step. In addition, the formation of the portion of plastic material 28 in the portion 30 of the inner side of the sheet, near the edge 12 of the hole efficiently creates an excellent seal at the edge of the QrificiQ and on the inner side of the sheet, which advantageously it helps to ensure that the product will come into contact with the inner layers of the sheet of material, when the inner side of the packaging material is intended to be a contact surface for the food., in the final packaging container. The moire configuration 20 of the internal mold tool 2 and the external mold tool 4 includes an edge of the external edge tool 4 which contacts the outer side 24 of the packaging sheet material 8 in a first line of contact 32, and an edge of the internal mold tool 2 which contacts the inner side 22 of the packaging sheet material 8 in a second contact line 34, such that the first contact line 32 is accommodated further away of the edge 12 of the hole that the second line contacts 34. The compression of the sheet 8 within the thinner free space 18, formed between the external and internal mold tools and the spatial arrangement of the first and second contact lines 32 and 34, causes a portion 8a of the sheet 8, accommodated adjacent the edge 12 of the hole to flex at an angle with respect to the plane of extension of the sheet accommodated substantially just outside the cavity 10 of the mold, whereby such sheet portion 8a is deflected away from the internal mold tool 2. The JFigra 2 shows that in the molding position, the molding configuration 20 of the internal and external mold tools is such that the edge 12 of the hole in the sheet 8, essentially contacts the outer mold tool 4. In this way, during the injection step of the thermoplastic material, the plastic material is not formed on the outer side 24 of the sheet 8, as it is observed in Figure 3. However, it is possible to form the outer mold tool 4 so that the edge 1,2 of the hole does not contact the outer mold tool 4, even after the leaf portion 8a has been deflected away from the lower mold tool 2. In this way, the device with opening formed by the injection step of thermoplastic material, will include portions of thermoplastic material covering the internal and external surfaces of the sheet adjacent to the edge of the hole. Figure 3 also shows a glued portion of plastic material of the opening device 26v accommodated in the clearance 18 between the internal mold tool 2 and the inner side 22 of the sheet 8, and formed during the injection step in general at high Pressure. The compression of the sheet 8 in the free space 18 is nevertheless sufficient to form a sufficient seal to prevent any significant leakage of the hot thermoplastic material out of the mold cavity 10, through the free space 18. While the described embodiment of Figures 1-3 shows the sheet portion 8a that is biased away from the internal mold tool 2, it has also been considered that by changing the relative positions of the contact lines 32 and 34, such as the first contact line 32 is accommodated closer to the edge 12 of the hole than the second contact line 34 is, it is possible to deflect the sheet portion 8a away from the outer mold tool 4, if desired. Accordingly, the mutual, particular spacing of the contact lines to determine the degree and extent of the flexure of the sheet portion 8a, and the particular configuration of the mold cavity formed by the mold tools with respect to the edge of the hole in the sheet, to determine where the plastic material portions will be formed, will dictate the particular position of the sheet portion 8a in the cavity in the molding position, to ensure that the desired final connection and fine positioning of the device with opening to the sheet, will be obtained effectively and efficiently. Figure 4 illustrates a further embodiment of the invention, which includes a molding confi guration 120 of the tools, external and external tools 102 and 104, mutually acclimated in the mcldep port, such that the olde tool, in Erno 102 is adjoined in contact with the inner side 22 of the blade 8, while the external mold tool 104 is accommodated in contact with an outer side 24 of the blade 8 to compress the blade 8 into a free space 18, thinner, formed between the molds, and such that the edge 12 of the hole is accommodated in the cavity 110 of the mold, formed by the internal and external molds. The molding configuration 120 of the inner and outer mold tools 102 and 104 also deviates the portion 8a of the packaging sheet material 8 accommodated adjacent the edge 12 of the hole, away from the in-mold tool 102. Once it has Once the deflection of the sheet 8 has been achieved, the hot thermoplastic material can be injected into the cavity 110 of the mold to form an opening device 126, coupled to the edge 12 of the hole in the sheet 8 (Figure 5). The deviation of the sheet portion 8a away from the inner mold tool ensures that a portion 128 of plastic material is formed on a portion 30 of the inner side 22 of the sheet portion 8a accommodated adjacent the edge 12 of the hole. The deviation of the sheet portion 8a in the mold cavity 110 and the positive formation of the portion 128 of plastic material, provides a uniformity and security with respect to the correct positioning of the sheet 8 with respect to the device with aperture 126, since The sheet is held in the correct position and offset during the injection step, and the formation of the portion 128 of plastic material in the portion 30 of the inner side of the sheet, near the edge 12 of the hole, efficiently creates an excellent seal. on the edge of the hole and on the inner side of the sheet, to help secure 9-ue -the product will not come into contact with the inner layers of the sheet of material, when the inner side of the packaging sheet material is intended to be a contact surface with the food in the final packaging container. The clearance 118 of the molding configuration 120 formed between the internal and external mold tools 102 and 104, has an extension lying in a plane that extends angularly to the mold cavity, in a direction extending away from the mold. internal mold tool 102, for biasing the mold portion 8a away from the internal mold tool 102, sufficiently so that the portion of. plastic material is positively formed in the portion 30 of the internal side of the a-shape, in the modality of figures 4 and 5, the contact lines in which the edges of the internal and external mold tools contact, with the The inner and outer surfaces of the sheet 8 are arranged, substantially mutually opposite, and therefore a flexion of the sheet portion 8a with respect to the ex ns or of the free spout 11Q does not occur. Rather, it is the extension of free space. 118 misplaces the portion 8a sufficiently away from the internal mold tool 102, to ensure that the desired connection and the desired positioning of the device with opening 12.6 to the sheet 8 is obtained manually. a combination of the bending effect of the leaf portion 8a, as obtained from the ane to described with reference to the embodiment of figures 1-3, by mutually spacing the lines, from qcntactc between IPS bprdes of the tools of internal and external mold and the internal and external surfaces of the sheet, with the angular extension arrangement of the portion 8a within the mold cavity 110 provided by the extension of the clearance 118 can provide a deviating action of the portion 8a in the mold cavity, suitable for obtaining the desired positioning of the device with opening on the leaf. Figure 4 shows that the edge 12 of the hole of the sheet 8 is slightly spaced with respect to the upper mold tool 104 in the molding position. This slight spacing however still provides that the hot thermoplastic material entering the mold cavity 110 during the injection phase, will push the sheet portion 8a into contact with the outer mold tool, so that the thermoplastic material is not formed in the top ladp of hpja 8, if desired. Figure 6 shows a variation of Figures 4-5, in which a molding configuration 220 formed by an internal mold tool 202 and an external mold tool 204 includes an angularly extending free space 218, for the deviation of the sheet portion 8a in a mold cavity 210, away from the internal mold tool 202, and a spacing between the sheet portion 8a and the external mold tool 204, which is sufficiently large, such that after the phase for injection of the thermoplastic material, an aperture device 226 is formed, which includes a portion of plastic material .236 accommodated on the outer side 238 of the sheet portion 8a, and a portion of plastic material 228 accommodated on the inner side. 230 of the sheet portion 8a. While the described embodiments of Figures ~§ show the portion of sheet 8a that is deflected away from the internal mold tool, it has also been considered that by changing the direction of extension of the free space of the mold configuration, it is It is possible to divert the sheet portion 8a away from the external mold tool, if desired. Accordingly, the particular extent of the free space of the mold configuration for determination of the direction of extension of the blade portion, and the particular configuration of the mold cavity formed by the mold tools with respect to the edge of the hole. of the sheet, for the determination of where the portions of plastic material will be formed, will dictate the particular position of the sheet portion in the cavity in the molding position, to ensure that the desired final connection is obtained effectively and efficiently. and the placement of the device with opening to the sheet.

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention is that which is clear from the present description of the invention.

Claims (10)

REVINDICATIONS Having described the invention as "foregoing, the contents of the following claims are claimed as property:

1. A method for injection molding a part of plastic material in an orifice, which is placed in a packaging sheet material, and the c.al defines an orifice edge of the packaging sheet material, characterized in that it comprises the steps of: accommodating at least one first mold tool in contact with a first side of the packaging sheet material, and accommodating at least one second mold tool in contact with a second side of the packaging material, and forming therein a mold cavity defined between the first and second mold tools, in such a way that at least a portion of the edge of the hole is accommodated within the mold cavity, and such that a sheet portion of the material of package sheet accommodated adjacent to the edge portion of the hole, is offset away from the second mold tool; and injecting plastic material into the mQl et cavity to form the plastic material part, whereby deviation of the sheet portion away from the second mold tool aids the formation of plastic material in a portion. of the second side of the leaf portion.

2. The method according to claim 1, wherein the formation of the mold cavity comprises the formation of a mold cavity, characterized in that it has: a first contact line in the c aal one edge of the first mold tool makes contact with the first side of the packaging sheet material; and a second contact line in which one edge of the second mold tool makes contact with the second side of the packaging sheet material; wherein the first contact line is accommodated farther from the edge portion of the hole than the second contact line, to deflect the leaf portion away from the second mold tool.

3, The confusing method with claim 1, characterized in that it comprises the deviation of the sheet portion away from the second mold tool, such that the sheet portion is flexed at an angle with respect to an extension plane of the material of the sheet. Packaging box, accpddadp substantially outside the clude cavity.

4. The method according to claim 1, characterized in that it comprises the first and second mold tools, such that the edge portion with the orifice makes contact with the first mold tool at least during the injection step of the plastic material, such that the plastic material is not formed on the first side of the packaging sheet material,

5. The method according to claim 1, characterized in that it further comprises the accommodation of the first and second mold tools such that the portion of the packaging sheet material in contact with the first and second olive tools is in a compressed state. with respect to the portion of the packaging sheet material accommodated within the mold cavity.

6. The method according to claim 1, characterized in that it further comprises the deflection of the sheet portion away from the second mold tool, by accommodating the mpdp sheet portion which extends angularly within the cavity of the mold. , in a direction that extends away from the second mplde tool.

7. A device for mpldep by injection, for injection molding a part of plastic material in an orifice, which is placed in a packaging sheet material and which defines the edge of the orifice of the packaging sheet material, the apparatus is characterized in that it comprises a first mold tool and a second mold tool, which are mutually accommodatable with respect to the packaging sheet material, in a molding position, such that the packaging material is sealedly placed between the first and second mold tools, and such that a mold cavity is formed by the first and second mold tools, in which at least a portion of the edge of the hole of the packaging sheet material is accommodated, wherein the first and second mold tools have a mold configuration in the molding position, such that a portion of the sheet of the packaging sheet material accommodated adjacent to the portion of the mold Orifice, is diverted away from the second mold tool, cpn lp which helps the formation of the plastic material on a portion of the second side of the sheet portion.

8. The combination according to claim 7, characterized in that the molding configuration of the first and second mold tools in the molding position comprises an edge of the first mold tool, which makes contact with the first side of the mold material. packaging sheet, in a first line and contact, and an edge of the second mold tool, which makes contact with the second side of the packaging sheet material, in a second contact line, such that the first contact line it is accommodated farther from the edge portion of the hole than the second line of contact, whereby the sheet portion is deflected away from the second mold tool.

9. The combination according to claim 7, characterized in that the molding position of the molding configuration comprises a free fermadp space between the first and second mold tools, for sealingly sealing the packaging material, and wherein the free space has a width dimension which is smaller than a thickness of the packaging sheet material, whereby the packaging material in the free space in the mpldep process is compressed.

10. The combination according to claim 7, characterized in that the molding position of the mpldep configuration comprises a free space formed between the first. and second mold tools, for accommodating the packaging sheet material, wherein the free space has an extension that lies in a plane that extends angularly within the mold cavity, in a direction extending away from the second tool of the mold.