EP0298252A2 - Sachet à fond carré ou à fond croisé - Google Patents

Sachet à fond carré ou à fond croisé Download PDF

Info

Publication number: EP0298252A2
Authority: EP; European Patent Office
Prior art keywords: flaps; sections; folded; bottom flaps; bottom sections
Prior art date: 1987-06-06
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.): Granted

Application number

EP88108727A

Other languages

German (de)

English (en)

Other versions

EP0298252A3 (en

EP0298252B1 (fr

Inventor

Alfred Theis

Uwe Mörig

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.)

Ludwig Fr Noltemeyer GmbH

Original Assignee

Ludwig Fr Noltemeyer GmbH

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.)

1987-06-06

Filing date

1988-06-01

Publication date

1989-01-11

1988-06-01 Application filed by Ludwig Fr Noltemeyer GmbH filed Critical Ludwig Fr Noltemeyer GmbH

1989-01-11 Publication of EP0298252A2 publication Critical patent/EP0298252A2/fr

1989-09-27 Publication of EP0298252A3 publication Critical patent/EP0298252A3/de

1992-04-22 Application granted granted Critical

1992-04-22 Publication of EP0298252B1 publication Critical patent/EP0298252B1/fr

2008-06-01 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/08—Bags or like containers made of paper and having structural provision for thickness of contents with block bottoms

Definitions

the invention relates to a block or cross-bottom bag made of one or more multilayer, optionally laminated paper and / or foil material, in the case of the bottom sections folded in the opposite direction and transversely to the longitudinal edges or the side walls, and partly extending from the extension of the front and rear walls the bottom flaps formed in the folded-in bottom sections are partially covered, the bottom flaps being connected in the area of the overlap with the bottom sections and in the area of their mutual overlap with one another by means of a dispersion adhesive.
film material which is mentioned in connection with paper for the bags mentioned, is understood to mean both plastic and aluminum films, which can either be laminated onto a coated or uncoated paper or can be provided as a loose inner or outer layer.
polypropylene-coated paper which has the polypropylene coating on the outside of the bag.
the bags mentioned at the outset are often used for the packaging of products which are to be kept for a long time without noticeable exchange of the surrounding air.
the block or cross bottom is characterized by a relatively high level of tightness, so that bags of this type are generally also used for the packaging of goods which tend to form dust.
the hermetic closure of the filling opening of such bags does not cause any major difficulties after the filling material has been introduced, since a high sealing effect is achieved by repeatedly folding down the opening edge, with any air leakage or air exchange via this sealing part of the sealing or sealing or using additional adhesive tapes Bag is avoided.
the invention has for its object to form a block or cross-bottom bag mentioned above so that a dust and largely airtight closure of its bottom is achieved without a size having to put up with the extra work involved in its manufacture.
the invention is based on the knowledge that it is not possible solely with dispersion adhesives, which also include wet adhesives based on plastics, the complete transitions in the adhesive surfaces, due to the locally different number of layers of the material lying one on the other, completely, in particular over longer periods Seals to seal.
a separate strip-shaped seal with a hot-melt adhesive layer is provided, which, in contrast to a dispersion adhesive, can be applied in the manner of a caterpillar-shaped adhesive application.
This also makes it possible to securely seal the step transitions within the adhesive surfaces.
the strips or caterpillars of the hot-melt adhesive can be kept extremely narrow in comparison to the flat application of the dispersion adhesive. Strips only a few millimeters wide are sufficient to create an airtight and dustproof block or cross bottom.
the application of the hot-melt glue does not pose any difficulties in the manufacture of the bags, because if the surfaces provided with the dispersion adhesive are designed appropriately, straight-line strips of the hot-melt glue can be applied, for example with the aid of nozzles.
strip-shaped Hot glue-glue application creates a kind of sealing bar, which extends from the fold line of one bottom flap to the fold line of the other bottom flap or extends beyond these fold lines to the bottom flaps.
This sealing bar does not necessarily have to be straight, but can also follow the contour of the bottom flaps in whole or in part.
the straight-line arrangement of the hot-melt adhesive application and the additional connecting surfaces formed thereby are much more favorable for the sections or flaps forming the base.
bottom flaps connected to one another with their mutually facing free ends are connected to the bottom sections via rectangular surfaces running parallel to the side edges of the bottom by means of the dispersion adhesive and via strip-shaped hot-melt glue applications running parallel to the side edges of the bottom and the rectangular surfaces.
This embodiment is particularly easy to manufacture since the caterpillar-shaped application of the hot-melt glue can be applied in the course of the folding process of the bag during its transport through periodically actuated nozzles provided above the transport path.
block or cross-bottom bags are designed so that the bottom flap lying on the outside ends in a rectangular tab section.
the tab sections form a larger contact surface and thus, with appropriate gluing, also a larger sealing surface. They are often required because imprints, in particular coding imprints, are applied to the outside of the base, which should not be visible to the buyer when selling the filled bags.
the double-layer gusset areas of the bottom flaps lie outside the bottom layers connected by gluing. Due to the folding process and also after the bag has been filled, these double layers of the bottom flaps lie very firmly on one another in the gusset areas mentioned, but a hermetic seal is only achieved when, according to claim 4, these gusset areas are adhesively bonded to one another.
the drawing shows two exemplary embodiments of the invention in a schematic representation.
1 to 3 are the reproduced the block bottom forming parts of the block bottom bag, which is rectangular in cross section, pivoted about the central longitudinal axis 1 of the block bottom into the plane of the front wall 2 of the bag.
the sections forming the bottom are each formed by folding the walls of the bag enclosing a rectangle.
the block bottom shown in FIGS. 1 and 2 consists of the bottom sections 4 folded in the opposite direction and transversely to the longitudinal edges 3 or side walls and the bottom flaps 5 and 6, these being double-layered in the areas 5a and 5b and 6a and 6b, the a layer is formed by the folded bottom sections 4.
the bottom flaps 5 and 6 are coated over their entire surface with a dispersion adhesive based on plastic or starch and after unfolding by folding the bottom flaps 5 and 6 around the fold lines 17 and 18 in their areas of overlap with the bottom section 4 or in the area their mutual overlap.
a dispersion adhesive can also be applied in the area of the bottom sections 4, provided that the area is covered by the bottom flaps 5 and 6.
the bottom flaps 5 and 6 are not completely coated with dispersion adhesive. Much more only the bottom flap 6 is coated with a dispersion adhesive in the cross-hatched area 7, this coating also continuing on the corner areas 7a and 7b on the bottom section 4 up to the fold line 17.
adhesive-free zones in which a strip-shaped hot-melt adhesive is in each case within the area of coverage of the bottom flaps 5 and 6 Glue application 9 or 10 is arranged in the manner of a glue bead.
Each hot-melt glue application 9 or 10 extends over the bottom section 4 to the inner wall surface of the bottom flaps 5 and 6, ie beyond the fold lines 17 and 18 of the bottom flaps mentioned.
the strip-shaped hot-melt glue applications 9 and 10 are kept narrow in relation to the rectangular surfaces 7a of the base sections provided with the dispersion adhesive.
FIG. 2 shows the bottom flap 5 already folded over the fold line 17 on the bottom section 4.
the bottom flap 6, which has not yet been folded over the fold line 18, can be seen in solid lines, which takes on the dashed position 6c after the fold.
the surfaces 7 and 7a which are provided with the dispersion adhesive, provide a relatively large-area connection of the bottom flaps 5 and 6 with the bottom sections 4 and, in the area of overlap, also the bottom flaps with one another. Parallel to this and parallel to the side edges 11 and 12 of the bottom, there is an additional connection of the bottom flaps 5 and 6 with the bottom sections 4 and, depending on the extent of the hot-melt glue application 9 and 10, towards the free edges of the bottom flaps 5 and 6 additional gluing of the bottom flaps in their area of coverage.
strip-shaped hot-melt glue applications 9 and 10 could also run on the bottom sections 4 approximately along the contour of the boundary edges of the bottom flaps 5 and 6 unfolded on the bottom region, but the application of such an angular adhesive application involves great effort, so that the parallel to the Side edges 11 and 12 of the bottom-running hot-melt glue applications 9 and 10 should be given preference.
FIG. 3 shows a design of the block bottom which differs from FIGS. 1 and 2.
the parts or surfaces corresponding to FIGS. 1 and 2 are provided with the same reference numerals.
the bottom flap 6 is designed such that it ends in a rectangular tab 15.
the strip-shaped hot-melt glue applications 9 and 10 extend to approximately the free end of the flap section 15.
the shape of the blank is known except for the reproduced glue surfaces 13 and 14 and 7.
the further applications of the dispersion or hot-melt glue provided on the back of this blank are not reproduced.
the gluing points 7 and 13 and 14 shown in FIG. 4 are on the inside of the inner layer bring, while the other gluing points resulting from the other figures must be applied to the outside of the outer layer.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Bag Frames (AREA)
Making Paper Articles (AREA)

EP88108727A 1987-06-06 1988-06-01 Sachet à fond carré ou à fond croisé Expired - Lifetime EP0298252B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19873719085 DE3719085A1 (de)	1987-06-06	1987-06-06	Block- oder kreuzbodenbeutel
DE3719085		1987-06-06

Publications (3)

Publication Number	Publication Date
EP0298252A2 true EP0298252A2 (fr)	1989-01-11
EP0298252A3 EP0298252A3 (en)	1989-09-27
EP0298252B1 EP0298252B1 (fr)	1992-04-22

Family

ID=6329250

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP88108727A Expired - Lifetime EP0298252B1 (fr)	1987-06-06	1988-06-01	Sachet à fond carré ou à fond croisé

Country Status (2)

Country	Link
EP (1)	EP0298252B1 (fr)
DE (2)	DE3719085A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1995011169A1 (fr) *	1993-10-16	1995-04-27	Nord-West Verpackung Karl Götze Gmbh & Co. Kg	Sachet, notamment de conditionnement de substances sensibles a l'humidite
KR20180008371A (ko) *	2015-05-13	2018-01-24	다이-팩 버파쿤겐 구스타브 다이커호프 게엠베하	종이 백 및 그의 제조 방법

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19840792C2 (de) *	1998-09-08	2003-04-24	Chronos Richardson Gmbh	Sack

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3409210A (en) *	1967-08-23	1968-11-05	Bemis Co Inc	Bag
DE1611671A1 (de) *	1967-10-31	1971-01-14	Hans Lissner	Kunststoffsack mit Kreuzboden sowie Verfahren zur Herstellung eines solchen Kunststoffsackes
DE1938422B2 (de) *	1969-07-29	1973-09-27	Gartemann & Hollmann Gmbh, 4800 Bielefeld	Verfahren und Vorrichtung zur Herstellung des Bodens eines Kreuzoder Klotzbodensackes oder -beuteis

1987
- 1987-06-06 DE DE19873719085 patent/DE3719085A1/de not_active Withdrawn
1988
- 1988-06-01 DE DE8888108727T patent/DE3870334D1/de not_active Expired - Fee Related
- 1988-06-01 EP EP88108727A patent/EP0298252B1/fr not_active Expired - Lifetime

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1995011169A1 (fr) *	1993-10-16	1995-04-27	Nord-West Verpackung Karl Götze Gmbh & Co. Kg	Sachet, notamment de conditionnement de substances sensibles a l'humidite
KR20180008371A (ko) *	2015-05-13	2018-01-24	다이-팩 버파쿤겐 구스타브 다이커호프 게엠베하	종이 백 및 그의 제조 방법
JP2018514466A (ja) *	2015-05-13	2018-06-07	ダイパックフェアパックンググスタフデッカーホフゲーエムベーハー	紙袋及び紙袋の製造方法

Also Published As

Publication number	Publication date
EP0298252A3 (en)	1989-09-27
DE3870334D1 (de)	1992-05-27
DE3719085A1 (de)	1988-12-15
EP0298252B1 (fr)	1992-04-22

Legal Events

Date	Code	Title	Description
1988-11-26	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1989-01-11	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): BE DE FR GB
1989-08-08	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1989-09-27	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): BE DE FR GB
1989-11-15	17P	Request for examination filed	Effective date: 19890922
1991-07-31	17Q	First examination report despatched	Effective date: 19910613
1992-03-06	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1992-04-22	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE DE FR GB
1992-05-27	REF	Corresponds to:	Ref document number: 3870334 Country of ref document: DE Date of ref document: 19920527
1992-06-12	ET	Fr: translation filed
1992-08-05	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1993-02-25	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1993-02-25	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1993-04-14	26N	No opposition filed
1994-05-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19940531 Year of fee payment: 7
1994-06-27	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19940627 Year of fee payment: 7
1994-06-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 19940630 Year of fee payment: 7
1994-07-01	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19940701 Year of fee payment: 7
1995-06-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19950601
1995-06-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19950630
1995-12-31	BERE	Be: lapsed	Owner name: LUDWIG FR. NOLTEMEYER G.M.B.H. Effective date: 19950630
1996-01-31	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19950601
1996-02-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19960229
1996-03-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19960301
1996-04-19	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST

Publication	Publication Date	Title
EP0399420B1 (fr)	1993-02-24	Feuille pour l'emballage à partir d'un matériau en feuille, et emballage correspondant
DD201870A5 (de)	1983-08-17	Ausgusstuellanordnung fuer einen faltbaren kartonbehaelter
EP0722408B1 (fr)	1998-09-02	Sachet, notamment de conditionnement de substances sensibles a l'humidite
EP0451174B1 (fr)	1994-07-13	Recipient d'emballage
DE2712482C2 (de)	1984-09-06	Verpackung für Zigaretten od. dgl.
DE3619407A1 (de)	1988-05-05	Giebelpackung
DE69705509T2 (de)	2002-05-16	Verfahren zur herstellung luft- und feuchtigkeitsdichter kartonschachteln
DD157552A5 (de)	1982-11-17	Behaelterzuschnitt aus faltbarem flachmaterial
EP0298252B1 (fr)	1992-04-22	Sachet à fond carré ou à fond croisé
DE3113044A1 (de)	1982-10-14	Fluessigkeitspackung
DE102005058552A1 (de)	2007-06-14	Verfahren zur Herstellung eines Packmittels und Packmittel aus flexiblem Material
DE1536109B1 (de)	1971-09-23	Faltschachtel
DE4021801A1 (de)	1991-10-24	Sack oder beutel mit im gefuellten zustand rechteckigem boden und angeklebtem griffteil
EP1479615B1 (fr)	2008-12-10	Emballage en feuille
EP0413990A1 (fr)	1991-02-27	Emballage et flan ainsi que procédÀ© pour sa fabrication
DE2632914C2 (de)	1982-12-23	Bodenaufbau eines aus mit Kunstharz laminiertem Karton bestehenden Flüssigkeitsverpackungsbehälters
DE1081371B (de)	1960-05-05	Rechteckiger Behaelter aus gefaltetem, blattfoermigem Material
DE2352718C3 (de)	1978-06-01	Quaderförmige Packung aus einem faltbaren Zuschnitt zur Aufnahme von Zigaretten o.dgl
DE8708089U1 (de)	1987-08-06	Block- oder Kreuzbodenbeutel
DE102023112911B4 (de)	2025-04-30	Papiersack
EP0183896B1 (fr)	1990-06-20	Sac à valve en papier multicouche à soufflets latéraux
EP0311913B1 (fr)	1991-07-24	Emballage rectangulaire
DD160406A5 (de)	1983-07-27	Stapelbarer behaelter
DE3740057C2 (fr)	1991-09-05
DE4323927A1 (de)	1995-01-19	Klotzbodenbeutel