EP2030906A1 - Sac tubulaire et son procédé de fabrication - Google Patents

Sac tubulaire et son procédé de fabrication Download PDF

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Publication number
EP2030906A1
EP2030906A1 EP07021794A EP07021794A EP2030906A1 EP 2030906 A1 EP2030906 A1 EP 2030906A1 EP 07021794 A EP07021794 A EP 07021794A EP 07021794 A EP07021794 A EP 07021794A EP 2030906 A1 EP2030906 A1 EP 2030906A1
Authority
EP
European Patent Office
Prior art keywords
tubular bag
fastening
bag
button
tubular
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Withdrawn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
EP07021794A
Other languages
German (de)
English (en)
Inventor
Stefan Lambertz
Decio Busciantella Ricci
Lars Bergerhof
Johannes Klasen
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.)
Teepak Spezialmaschinen GmbH and Co KG
Original Assignee
Teepak Spezialmaschinen GmbH and Co KG
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
Application filed by Teepak Spezialmaschinen GmbH and Co KG filed Critical Teepak Spezialmaschinen GmbH and Co KG
Publication of EP2030906A1 publication Critical patent/EP2030906A1/fr
Withdrawn legal-status Critical Current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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners

Definitions

  • the present invention relates to a tubular bag, and a method for its production.
  • tubular bags are used in particular for packaging foodstuffs.
  • the tubular bags consist of an envelope, which has usually been formed into a tube via a longitudinal sealing seam. This hose is sealed at the bottom and at the top across, via a transverse weld. After forming one of the two welds, the product to be packaged is filled into the bag. Only then is the bag closed with the other transverse sealing seam.
  • the present invention is based on the problem of specifying a tubular bag which can be easily and reliably closed after first opening. Furthermore, the invention should provide a method for producing a corresponding tubular bag.
  • the present invention provides a tubular bag having the features of claim 1.
  • the tubular bag according to the invention has a fastening means which is provided on the outside of the tubular bag this outstanding and which cooperates with the free length portion of the tubular bag to create the first opened tubular bag by folding the free length portion against the side surface and thus re-close.
  • the specific embodiment of the fastening means is formed according to preferred embodiments of the invention by a fastening button which can be passed through a passage which is recessed at the free length portion, so as to fix the applied to the longitudinal side of the bag length portion.
  • a clip is provided which defines the free length portion relative to the side surface and thus allows the closure of the initially opened bag.
  • the tubular bag according to the invention offers the possibility of setting the free length section in a simple manner and in a form-fitting manner on the material of the wrapping material itself.
  • Separate fasteners that have to be supplied to the tubular bag after manufacture of the tubular bag and fixed there are not required.
  • the fastening means may be fixedly connected to the wrapping material as part of the tubular bag.
  • fastening means is formed by the fastening button, only one passage for the fastening button must be cut out on the free longitudinal section to be applied to the tubular bag. Additionally or alternatively, a cutout can also be formed by cutting away casing material, in particular by punching. This recess may have a dimension approximately corresponding to the size of the mounting head. The sheath may also have certain elastic properties to stretch elastically as the fastener button passes through the passageway.
  • the fastening button is preferably carried by a neck tapered in relation to the size of the fastening button, which is surrounded by the passage after the tubular bag has been reclosed, so that the fastening button projects beyond the sleeve in the region of the free longitudinal section.
  • the free length section is then substantially by a positive fit Fixed connection relative to the free length portion and held in closed alignment with the tubular bag.
  • the recess is at least two sides projected beyond the slot. Accordingly, this recess has approximately a diameter corresponding to the diameter of the neck.
  • the button is much bigger.
  • the button should be designed in such a way that it fulfills two different functions in the best possible way: on the one hand, the button must be equipped at its free end so that the cover material can easily be pushed over the button in the area of the passage.
  • a spherical or conical design of the fastening knob offers at its free end.
  • the opposite side of the fastening button should prevent the other person from unintentionally bulging the Hüllstoffs possible.
  • the hose bag facing the back of the fastener button form a flat contact surface for the envelope, which cooperates with the envelope surrounding the passage such that the contact surface prevents buckling of the Hüllstoffes in the region of the passage, or more difficult.
  • the fastening-side end of the fastening means ie the foot of the clip or the neck of the button, projecting inwardly into the bag. Accordingly, the wrapper tends to move away from this end.
  • the wrapping material lies in the region of the side surface penetrated by the fastening button also in the region of the passage in a plane with the remaining wrapping material of the side surface.
  • the neck and the dimensions of the fastening button should be coordinated with each other so that the envelope here rests against the rear abutment surface of the fastening knob, whereby bulging of Hüllstoffes outward in the region of the passage is largely avoided.
  • a corresponding effect can also be achieved with a clip. It is essential in this embodiment, however, that the clip the free length section clamps and causes required elastic clamping forces, so that the free longitudinal section is clamped between opposing active surfaces of the clip and thus held.
  • the fastening means on a fastening element, so that the fastening element projects centrally from this fastening means.
  • the fastener should preferably have a concave surface connected by a fastener ring connected to the coverstock.
  • This preferred embodiment is particularly suitable in combination with a fastener button as a fastener and improves the system the length of the fastener button ..
  • the neck and the design of the fastener knob are coordinated so that the fastener button (with resealed bag) with his the bag bag facing Rear side abuts the flat film web of the free length section.
  • the said ring is preferably connected to the sheath by means of welding, preferably by means of ultrasonic welding, which leads to a high number of cycles in the production of tubular bags.
  • the fastening means is connected to a degassing valve, which is fastened on the inside of the tubular bag to the wrapping material and serves to degas the bag.
  • a degassing valve which is fastened on the inside of the tubular bag to the wrapping material and serves to degas the bag.
  • Such valves are commonplace in the manufacture of tubular bags for packaging goods that degas during storage (cf. EP 1 538 106 ). Accordingly, the development according to the invention offers the advantage of forming the valve with the device for reclosing the opened tubular bag as a unitary component. The valve and the fastening means can be attached to the wrapping material in one and the same manufacturing step.
  • the present invention provides a method for producing a tubular bag, in which a film web of Hüllstoffs to form a tube is placed around a form collar and the folded film web is formed by a longitudinal sealing device to a film tube, the top and bottom is closed after filling of goods to be packaged.
  • a generic method is for example from the DE 33 45 459 , as well as the EP1 719 705 known.
  • the present invention on the film web a shell material protruding fastening button and at the same time to save a passage for the button.
  • This passage is formed at a position which lies above the upper transverse weld after the upper and lower sides of the hose are closed.
  • the invention can be guided by the idea that the fastening knob is fastened on that side of the sheet-like Hüllstoffes, which forms the inside of the later tubular bag.
  • the fastening button itself protrudes on the opposite side of the Hüllschers.
  • the fastening button is preferably connected via an ultrasonic device with the envelope, which is fixed to the envelope during welding.
  • the welding device is carried.
  • a cutting and / or punching device to form the passage.
  • This cutting or punching device and the welding device for fastening the fastening button can be provided on a common carriage. Accordingly, the welding device and the cutting or punching device can be moved simultaneously with the continuously withdrawn wrapping material.
  • FIG. 1 shows a perspective side view of a marked with reference numeral 1 tubular bag, which is shown standing upright on a lower transverse weld 2. At the top four side edges run, 3 to an upper transverse weld 4 together. Through this upper transverse weld 4, the tubular bag 1 is closed on the upper side. The upper transverse weld seam 4 on the upper side is surmounted by a free longitudinal section 5.
  • the tubular bag 1 shown in the figures has two opposing main side surfaces 6 and two perpendicular thereto extending end faces 7.
  • the perpendicularly extending main side surfaces 6 are slightly bevelled relative to the lower portion.
  • the envelope of the tubular bag is surmounted by a fastening knob 9.
  • the free longitudinal section 5 has a passage 10, which in the present case comprises a circular recess 11 whose diameter is smaller than a diameter D of the fastening knob 9 (see FIG. FIG. 2 ).
  • the recess 11 has in the embodiment shown a diameter corresponding to about 60 to 80% of the diameter D.
  • a slot 11 passing through the recess has a length L which corresponds to 1.2 to 1.5 times the diameter D.
  • the fastening knob 9 is located at the end of a neck 12, which protrudes from a concave surface 13 which is formed by a disk-shaped fastening element 14.
  • This fastening element 14 has a fastening ring 15, which is welded to the inside of the enveloping material.
  • the fastener 14 also forms a valve for degassing the bag, so that the valve sometimes used together with the mounting button forms a structural unit. As a result, the manufacturing effort is reduced.
  • the tubular bag 1 After the first opening of the bag by separating the upper transverse weld 4 and / or cutting in the upper side of the tubular bag 1 immediately below the upper Cross weld 4, the tubular bag 1 can be resealed. For this purpose, only the passage 10 must be placed on the fastening knob 9, so that the free length portion 5 is positively fixed relative to the tapered portion 8.
  • the present invention is not limited to the embodiment shown.
  • a plurality of passageways 10 provided one above the other in the longitudinal direction can be provided on the free longitudinal section 5 in order to fix the multiply folded free length section 5 on the bevelled area 8 to improve the sealing via the fastening knob 5.
  • FIG. 4 shows a perspective side view of an alternative embodiment of the in the FIGS. 1 to 3 shown in the re-closed position accordingly FIG. 3 of the previous embodiment.
  • Identical components and elements of the tubular bag 1 are identified by the same reference numerals.
  • a clip 16 is provided as fastening means, which is connected to the middle of the chamfered region 8 of the main side surface 6 with the envelope of the tubular bag 1.
  • This clip 16 has two legs, namely a lower leg 17, which is connected directly to the envelope of the tubular bag 1, and an upper leg 18, which rests under elastic bias against the lower leg 17 and re-closed tube bag 1, the free length section. 5 clamped against the lower leg 17.
  • the clip 16 may rest with its lower leg 17 on the outside of the tapered portion 8. This variant is on the left side of the FIG. 5 shown.
  • the clip 16 may also be integrally formed with a valve 19 as shown on the right side of FIG FIG. 5 is shown.
  • the valve 19 has - as well as the valve according to the embodiment according to FIG. 2 - A ring 15 which spans a valve membrane 20.
  • the clip 16 is integrally connected with its fastening side end with the mounting ring 15.
  • the mounting ring 15 forms contact surfaces for the film material of the tubular bag 2, where this film material is welded to the mounting ring and thus to the clip 16, and gas-tight, so that the bag contents can escape through the valve membrane 20 alone.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Bag Frames (AREA)
EP07021794A 2007-09-03 2007-11-09 Sac tubulaire et son procédé de fabrication Withdrawn EP2030906A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007041690 2007-09-03

Publications (1)

Publication Number Publication Date
EP2030906A1 true EP2030906A1 (fr) 2009-03-04

Family

ID=39743722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07021794A Withdrawn EP2030906A1 (fr) 2007-09-03 2007-11-09 Sac tubulaire et son procédé de fabrication

Country Status (1)

Country Link
EP (1) EP2030906A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109533630A (zh) * 2018-12-18 2019-03-29 成泰昌包装制品(深圳)有限公司 一种低成本多层减震包装结构
EP3486190A1 (fr) * 2017-11-15 2019-05-22 BARILLA G. e R. Fratelli S.p.A. Sac refermable
RU2781085C2 (ru) * 2017-11-15 2022-10-05 БАРИЛЛА Г. и Р. ФРАТЕЛЛИ С. п. А. Гибкая упаковка мешочного типа с устройством повторного закрытия

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2020804A (en) * 1934-05-29 1935-11-12 Hyman R Segal Package
US4706297A (en) * 1986-04-16 1987-11-10 Minigrip, Inc. Foldable top bag and method
JPH06127557A (ja) * 1992-10-14 1994-05-10 Dainippon Printing Co Ltd リクローズ袋
FR2799734A1 (fr) * 1999-10-15 2001-04-20 Cetec Ind Conditionnement Sac a fermeture repositionnable et procede d'obtention
US20050031228A1 (en) * 2003-08-06 2005-02-10 Fres-Co System Usa, Inc. Reclosable flexible package and method for making the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2020804A (en) * 1934-05-29 1935-11-12 Hyman R Segal Package
US4706297A (en) * 1986-04-16 1987-11-10 Minigrip, Inc. Foldable top bag and method
JPH06127557A (ja) * 1992-10-14 1994-05-10 Dainippon Printing Co Ltd リクローズ袋
FR2799734A1 (fr) * 1999-10-15 2001-04-20 Cetec Ind Conditionnement Sac a fermeture repositionnable et procede d'obtention
US20050031228A1 (en) * 2003-08-06 2005-02-10 Fres-Co System Usa, Inc. Reclosable flexible package and method for making the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3486190A1 (fr) * 2017-11-15 2019-05-22 BARILLA G. e R. Fratelli S.p.A. Sac refermable
RU2781085C2 (ru) * 2017-11-15 2022-10-05 БАРИЛЛА Г. и Р. ФРАТЕЛЛИ С. п. А. Гибкая упаковка мешочного типа с устройством повторного закрытия
CN109533630A (zh) * 2018-12-18 2019-03-29 成泰昌包装制品(深圳)有限公司 一种低成本多层减震包装结构

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