EP0555170A1 - Hermetischer Verschluss für die Ausgusstülle eines Faltbehälters - Google Patents

Hermetischer Verschluss für die Ausgusstülle eines Faltbehälters Download PDF

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Publication number
EP0555170A1
EP0555170A1 EP19930500014 EP93500014A EP0555170A1 EP 0555170 A1 EP0555170 A1 EP 0555170A1 EP 19930500014 EP19930500014 EP 19930500014 EP 93500014 A EP93500014 A EP 93500014A EP 0555170 A1 EP0555170 A1 EP 0555170A1
Authority
EP
European Patent Office
Prior art keywords
pouring spout
elements
container
walls
seal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19930500014
Other languages
English (en)
French (fr)
Inventor
Francisco Calle Garay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from ES9200227A external-priority patent/ES2060496B1/es
Priority claimed from ES9200228A external-priority patent/ES2065798B1/es
Application filed by Individual filed Critical Individual
Publication of EP0555170A1 publication Critical patent/EP0555170A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/02—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
    • B65D5/06—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end-closing or contents-supporting elements formed by folding inwardly a wall extending from, and continuously around, an end of the tubular body
    • B65D5/064—Rectangular containers having a body with gusset-flaps folded outwardly or adhered to the side or the top of the container
    • B65D5/066—Rectangular containers having a body with gusset-flaps folded outwardly or adhered to the side or the top of the container with supplemental clamping elements mounted on the container top

Definitions

  • This invention concerns a procedure for providing a hermetic seal for the pouring spout of a shapable folding container, of the type known by the name of "tetra-pack".
  • These containers are obtained from a template with a general rectangular shape, provided with folding lines which, when the longitudinal edges of the template are joined back to back and it is then shaped, define rectangular walls and end flaps which, when folded back through a right angle towards the inside, partially meet back to back and are joined, sealing the bases and, at least in one of them, defining two spouts that can be folded back on the outside over the lesser walls, one of these spouts acting as the pouring spout when cut transversely.
  • the template from which the container is shaped is usually made of cardboard, with waterproofing on at least its internal surface, for example by means of a lamina or coating of an olefin polymer.
  • the subject of this invention is the development of a procedure by means of which the pouring spout of this kind of container can be provided with a hermetic seal, which can be opened and closed as many times as is wished while the contents of the container last. In this way, the preservation of the contents of the container in a perfect condition can be ensured.
  • this seal implies a considerable advantage since, on the one hand it will allow the life of the contents to be prolonged, and on the other it will allow the contents to be maintained in optimum conditions, virtually equal to those that they had at the moment the container was opened, furthermore ensuring that the container can be carried without any risk of occasional splashing or spilling of the contents.
  • Another great advantage offered by the invention is that it could extend the use of this type of receptacle to the field of gasified liquids, since the preservation of this kind of product requires a hermetic seal.
  • a further advantage of the invention comes from the fact that the hermetic seal added to the pouring spout for containers of the type described here has a simple design and its cost is extremely low. Moreover, fitting this seal in the spout can be done by simple and economical procedures. All this means that the inclusion of the invention's seal will have hardly any affect on the final cost of the container.
  • a transverse seal fitted to the internal surface of the walls defining the pouring spout is a transverse seal, designed in such a way that will allow easy opening and sealing from the outside of the pouring spout, opening being achieved by pressing the edges of that spout in opposite directions, while the seal is achieved by pressing the external surface of the walls of the pouring spout in opposite directions.
  • This seal can, for example, be of the type consisting of two elongated facing elements, one with a male profile and the other with a female profile, which can be joined together by means of pressure and be separated by pulling. Each of these elements is fixed to the internal surface of the walls defining the pouring spout, in the coincident transverse position, immediately outside the line of folding of the spout.
  • the male and female elements making up the seal are joined at the ends, forming a kind of mouth or rim that can be sealed by placing the male and elements together and pressing them.
  • This unit is fixed via the rear surface of one of the elements - for example by microwaves, ultrasound or thermowelding - to the internal surface of the part of the template defining one of the walls of the pouring spout.
  • This securing operation is carried on the template before the container is shaped.
  • the other element forming part of the seal is fixed via its rear surface, also by means of microwaves, ultrasound or thermowelding, to the internal surface of the other wall of the pouring spout once the container has been shaped and sealed, filled with the liquid that it is to contain.
  • the electrode or element applying the radiation, ultrasound or heat for the thermowelding is applied to the external surface of the wall on whose internal surface this second elongated sealing element is going to back on to.
  • Each of the elongated sealing elements can also include a rear longitudinal strip or band. These longitudinal strips or bands will be joined by their transverse edges and be fixed to the internal surface of the walls defining the pouring spout via the external surfaces of the corresponding strips or bands.
  • Another solution is to have male and female elements in such a way that one of them is located on the triangular area defining one of the walls of the pouring spout, close to the folding line separating that area from the neighbouring area of the container.
  • the other element making up the seal is transversely cut into two equal sections. Each of these sections is fixed to one of the areas defining half of the otherwall of the pouring spout, starting from the end next to the opposite element and in a perpendicular direction to it.
  • the central part of the elements making up the seal may have a gap occupied by a circular piece, which will have a cross-section coincident with that of the element to which it belongs. These pieces of both elements will be able to be coupled to each other by pressure and be separated by pulling. The transverse cut of the element subdivided into two sections will be made precisely along the position of the diameter of the circular piece for that element.
  • Afurther subject of this invention is the container that includes the hermetic seal made in accordance with the described procedure.
  • the container represented in figure 5 is obtained from a template, whose design is shown in figure 1.
  • This template referenced with number 1
  • These folding lines mark out rectangular- shaped sections 3 that will make up the walls of the container when it is shaped.
  • the folding lines 2 also mark out sections 4 in the extensions of the areas 3, which will form flaps that fold through a right angle towards the inside of the container in order to seal its bases.
  • the container represented in figure 1 has an internal hermetic seal in one of the spouts 9, which will be intended for being cut in order to act as the pouring spout.
  • This seal is of the type that consists of two warped elements, by way of strands or strips, having longitudinal male and female shapes that face each other and can couple to each other. These seals are widely used, for example, for sealing the openings of bags made of plastic or similar material.
  • the two elements making up the seal are joined at their ends, creating a strip 11, figure 1, which, via the rear surface of one of the elements, backs on to one of the triangular areas 6 that will shape the upper base of the container, in a position parallel and close to the folding line 2 separating this triangular area 6 from the area 3 corresponding to the side face 10 of the container.
  • the piece 11 is fixed to the internal surface of the template 1, in the position shown in figure 1, by means of energy radiation, ultrasound, thermowelding or microwaves.
  • Figure 2 represents in transverse cross-section the two elongated elements, male 12 and female 13, making up the seal of the kind mentioned.
  • the female element 13 that is fixed by its external surface to the template 1, though it could also be the male element 12.
  • the base of these elements can also include a band 14 of greater width, via which they will be fixed to the corresponding surfaces of the container.
  • a longitudinal separation band 14a for example of aluminium, can be provided in the band 14 supporting the male 12 and female 13 pieces, in order to prevent these elements from becoming joined together.
  • the joins between the band 14 and the template 1 are referenced with number 18.
  • the container is then shaped in the manner that is well known until it takes on a tubular shape, as shown in figure 3. In this position the container is filled and cut to the required length. The position of the piece 11 which will shape the seal of the container can be appreciated in this figure 3.
  • the spout 9 is cut, for example along the line VII-VII of figure 5. Pressing the longitudinal edges of the pouring spout 9 in opposite directions, as indicated by the arrows N° 16 in figure 7, causes the seal to open, allowing the liquid contained inside to be poured out. When it is wished to seal the container again, the walls of the pouring spout 9 are pressed in opposite directions, as indicated by the arrows 17 in figure 7, in such a way that the male 12 and female 13 elements of the seal couple to each other, thereby leaving the pouring spout hermetically sealed.
  • the elongated male and female elements 12 and 13 are fixed to the template 1 prior to shaping the container.
  • the male element 12 is fixed in the central triangular area 7, close to the folding line 2 separating this area from the neighbouring rectangular area 3 that will shape one of the smaller walls 4 of the container.
  • the female element 13 is cut transversely through the centre into two sections of equal length, each of which is fixed to one of the side triangular sections 7, starting from the ends of the male element 12 and in a perpendicular direction to it, as can be clearly appreciated in figure 9. In this way, the two sections of the female element 13 form a right angle C-shape with the male element 12.
  • the two sections 13 When the container is shaped arid the corresponding spout 9 is created, the two sections 13 will be left in an aligned position, with their ends backing on to and facing the male element 12.
  • the rear of the male 12 and female 13 elements can be finished in a longitudinal widening or strip 14, as represented in figure 2.
  • the shape of the couplable parts of the male and female elements can vary, corresponding to traditional shapes.
  • the ends of the two sections of the female element 13 can be finished in semicircular pieces 19, the male element 12 also being provided with a central piece 20 with the same profile.
  • the semicircular pieces 19 will, when the container is shaped, define a circular piece that can couple and be fixed to the circular piece 20 of the male element, ensuring the correct relative positioning of the different components of the seal.
  • These pieces could define different shapes, for example, elliptical, polygonal, etc.
  • the sections 13 of the female element can be independent of the male element 12, or they can form a piece with the shape that will adopt on the internal surface of the template 1.
  • the pouring spout 9 is provided with a seal of simple design and low cost, and with which the opening and sealing of the pouring spout can be carried out as many times as is wished, until the contents of the container 8 are exhausted.
  • the shapes of the couplable parts of the male 12 and female 13 elements can vary, and these elements may also lack the longitudinal widenings or bands 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
EP19930500014 1992-02-05 1993-02-05 Hermetischer Verschluss für die Ausgusstülle eines Faltbehälters Withdrawn EP0555170A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES9200227A ES2060496B1 (es) 1992-02-05 1992-02-05 Procedimiento para dotar de cierre hermetico al pico vertedor de un envase armable.
ES9200228A ES2065798B1 (es) 1992-02-05 1992-02-05 Procedimiento para dotar de cierre hermetico al pico vertedor de un envase armable y plegable.
ES9200228 1992-02-05
ES9200227 1992-02-05

Publications (1)

Publication Number Publication Date
EP0555170A1 true EP0555170A1 (de) 1993-08-11

Family

ID=26154596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930500014 Withdrawn EP0555170A1 (de) 1992-02-05 1993-02-05 Hermetischer Verschluss für die Ausgusstülle eines Faltbehälters

Country Status (1)

Country Link
EP (1) EP0555170A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998052828A1 (de) * 1997-05-22 1998-11-26 Cetoni Umwelttechnologie-Entwicklungsgesellschaft Mbh Mit einer dichtung versehene verpackung
FR2801367A1 (fr) * 1999-11-22 2001-05-25 Bouygues Offshore Complexe tubulaire isolant pour conduites coaxiales
US6820391B2 (en) 2000-01-31 2004-11-23 Cryovac, Inc. Apparatus for making a reclosable pouch
CN113163942A (zh) * 2018-11-28 2021-07-23 马克罗斯有限公司 存档结构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332344A (en) * 1980-02-08 1982-06-01 Strodthoff Glenn G Resealable package
EP0389130A1 (de) * 1989-03-22 1990-09-26 Minnesota Mining And Manufacturing Company Behälter mit ineinandergreifenden Verschlussteilen
DE4018264A1 (de) * 1989-06-07 1990-12-13 Rosenstatter Judith Doppelkappendeckeldruckpressverschluss fuer tetra-pak,combibloc etc.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332344A (en) * 1980-02-08 1982-06-01 Strodthoff Glenn G Resealable package
EP0389130A1 (de) * 1989-03-22 1990-09-26 Minnesota Mining And Manufacturing Company Behälter mit ineinandergreifenden Verschlussteilen
DE4018264A1 (de) * 1989-06-07 1990-12-13 Rosenstatter Judith Doppelkappendeckeldruckpressverschluss fuer tetra-pak,combibloc etc.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998052828A1 (de) * 1997-05-22 1998-11-26 Cetoni Umwelttechnologie-Entwicklungsgesellschaft Mbh Mit einer dichtung versehene verpackung
FR2801367A1 (fr) * 1999-11-22 2001-05-25 Bouygues Offshore Complexe tubulaire isolant pour conduites coaxiales
WO2001038779A1 (fr) * 1999-11-22 2001-05-31 Bouygues Offshore Complexe tubulaire isolant pour conduite
US6820391B2 (en) 2000-01-31 2004-11-23 Cryovac, Inc. Apparatus for making a reclosable pouch
CN113163942A (zh) * 2018-11-28 2021-07-23 马克罗斯有限公司 存档结构

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