EP0620157A2 - Sac en papier - Google Patents

Sac en papier Download PDF

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Publication number
EP0620157A2
EP0620157A2 EP93119926A EP93119926A EP0620157A2 EP 0620157 A2 EP0620157 A2 EP 0620157A2 EP 93119926 A EP93119926 A EP 93119926A EP 93119926 A EP93119926 A EP 93119926A EP 0620157 A2 EP0620157 A2 EP 0620157A2
Authority
EP
European Patent Office
Prior art keywords
tear
open
paper
sack
longitudinal lines
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.)
Granted
Application number
EP93119926A
Other languages
German (de)
English (en)
Other versions
EP0620157A3 (fr
EP0620157B1 (fr
Inventor
Günter Südecum
Peter Kramme
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.)
ASSIDOMAEN HERKULES VERPACKUNGSWERKE GMBH
Original Assignee
Assidoman Herkules Verpackungswerke 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.)
Filing date
Publication date
Application filed by Assidoman Herkules Verpackungswerke GmbH filed Critical Assidoman Herkules Verpackungswerke GmbH
Publication of EP0620157A2 publication Critical patent/EP0620157A2/fr
Publication of EP0620157A3 publication Critical patent/EP0620157A3/fr
Application granted granted Critical
Publication of EP0620157B1 publication Critical patent/EP0620157B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
    • B65D75/5844—Tear-lines provided in a wall portion for tearing out a portion of the wall the portion of the wall being a narrow strip, e.g. between lines of weakness

Definitions

  • the invention relates to a paper sack with two preferably rectangular bottoms and a tube-like jacket arranged in between, which in the filled state takes on the rectangular shape of the bottoms of the jacket wall.
  • Paper bags of this type are produced from a jacket wall glued to form a tube, the bottoms being folded out of the tube material.
  • Cross-bottom bags are created by folding a tubular jacket that is laid flat between the outer side edges, while block bottoms are created by folding a jacket tube with side gussets.
  • Such bags are usually filled through an opening in the bottom, which can be provided with a valve tube, or through the still open bottom itself.
  • the sack After the sack has been transported to the end user, the sack is opened by the latter in order to access the filling material formed by the bulk material, that is to say to be able to empty the sack.
  • the wall of the sack is often cut open for this purpose.
  • DE 40 10 822 A1 discloses a tear-open device which enables the floor to be opened over the entire width of the cross floor. This opening allows an at least partial opening of the corner folds in order to remove the filling material.
  • the opening in the bottom area has the advantage that the bag stability remains unaffected, but the disadvantage that the tearing takes place against considerable resistance and is therefore difficult to manage.
  • the invention is based on the object of providing a paper sack of the type mentioned at the outset with an opening aid which enables the paper sack to be emptied completely in daily use, does not noticeably impair the stability of the paper sack and is easy to open.
  • a paper sack of the type mentioned at the outset is achieved according to the invention by a tear strip, which runs parallel to a floor in the jacket wall and is formed by tear perforations and extends only over a small part of the width of the jacket wall.
  • Tear perforations usually limit the full tear area. Since the tear-open direction of the tear-off strip formed by the tear-open perforation runs parallel to the floor, the tear-open perforation itself would have to run in a closed line on the jacket wall in order to ensure the idea of a complete one Realize removal of the soil. Such a tear-open perforation would reduce the stability of the bag too much and would cause the bag to burst open in the area of the tear-open perforation when the filled bag is dropped from a greater height. According to the invention, the tear-open perforation extends only over a small part of the width of the jacket wall, preferably only over a few centimeters, preferably over not more than half the wide side wall of the filled sack.
  • the tear-open perforation according to the invention can be designed in a simple manner on three sides with two longitudinal lines running parallel to one another in the tear-open direction and one end line perpendicular to them connecting the ends of the longitudinal lines.
  • the tear strip thus formed must be detached from the rest of the jacket wall by pressing in or engaging behind the perforations. This is expediently done by pressing in or reaching behind the front line.
  • the paper sack according to the invention offers particular advantages in a multilayer design if the end line of each layer is arranged offset in the tear direction relative to the end line of the layer located further out. This ensures that only the tear-open perforation of the outermost layer is pressed in or gripped behind and only the outermost layer has to be gripped. If, in a preferred embodiment, the tear strips of the layer are glued together, the tear strips of the layers below are automatically lifted off by the staggered arrangement of the end lines.
  • the parallel longitudinal lines of the layers are arranged offset from one another, the distance between the parallel longitudinal lines of an inner layer advantageously being smaller than that of an outer layer. This further reduces the residual risk of the perforation lines bursting open.
  • Tear-off perforations according to the invention can also be provided multiple times on a sack, for example in alignment with one another on its front and back or independently of one another near both bottoms of the sack.
  • the sack shown in FIG. 1 has two bottoms 1, 2, which are folded as cross bottoms from the tubular wall 3.
  • the upper base 2 has a schematically represented external valve 4, via which the otherwise closed sack can be filled with filling material.
  • the jacket wall 3 After filling, the jacket wall 3 essentially assumes the rectangular shape of the bottoms 1, 2 in cross section and thus consists of two large side walls 5 and two narrow side walls 6.
  • the sack has a tear-open perforation 7 in the middle of the large side wall 5, which consists of two parallel longitudinal lines 8 and a front line 9 that connects the one-sided ends of the longitudinal lines 8 and is perpendicular to it.
  • These three perforation lines 8, 9 define the free end of a tear strip 10, which can be opened from the end face 9 and pulled in the direction of the arrow 11 in order to, after a complete revolution, the part of the casing wall 3 located above the tear strip 10 together with the associated one Separate bottom 2 from the remaining part of the casing wall 3 with the bottom 1. This creates a completely open sack that can be emptied without any problems.
  • Figure 2 illustrates the design of the opening aid in a three-layer jacket wall 3.
  • Each of the jacket walls forms a tear strip 10, 10 ', 10'', which are glued to each other on the adjoining surfaces.
  • Figure 2 shows the tear strips 10, 10 ', 10''after separation from the associated layers of the casing wall 3 along the perforation lines 8, 9; 8 ', 9' or 8 '', 9 ''. It is clear that the end line 9 ′′ of the innermost layer is in the tear-open directions 11 with respect to the end line 9 ′ of the middle layer and this in turn is offset with respect to the end line 9 of the outer layer.
  • the perforation lines 8 or 8 ′ and 8 ′′ which run parallel to one another, are offset from one another, the two perforation lines 8 ′′ being at a smaller distance from one another than the perforation lines 8 ′ and again being at a smaller distance than the perforation lines 8.
  • the tear strip 10 ′′ of the inner layer is narrower and shorter than the tear strip 10 ′ of the middle layer and this again is shorter and narrower than the tear strip 10 ′′ of the outer layer.
  • tear strips 10, 10 ', 10' ' are glued to one another, pulling on the outer tear strip 10 is sufficient to also separate the tear strips 10', 10 '' from their positions.
  • Figure 2 shows the state of the along the perforation lines 8,9; 8 ', 9'; 8 ′′, 9 ′′ tear-open strips 10, 10 ′, 10 ′′, which in this state are pulled further around the entire jacket wall 3 in the tear direction 11 in order to separate the upper part of the sack.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Pens And Brushes (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
EP93119926A 1993-04-10 1993-12-10 Sac en papier Expired - Lifetime EP0620157B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9305473U DE9305473U1 (de) 1993-04-10 1993-04-10 Papiersack
DE9305473U 1993-04-10

Publications (3)

Publication Number Publication Date
EP0620157A2 true EP0620157A2 (fr) 1994-10-19
EP0620157A3 EP0620157A3 (fr) 1995-02-15
EP0620157B1 EP0620157B1 (fr) 1998-03-04

Family

ID=6891898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93119926A Expired - Lifetime EP0620157B1 (fr) 1993-04-10 1993-12-10 Sac en papier

Country Status (3)

Country Link
EP (1) EP0620157B1 (fr)
AT (1) ATE163619T1 (fr)
DE (2) DE9305473U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010008166U1 (de) 2010-07-27 2010-10-21 Papiersackfabrik Tenax Gmbh & Co. Kg Papiersack mit Öffnungsvorrichtung
CN113039133A (zh) * 2018-12-03 2021-06-25 比朔夫+霍莱恩欧洲股份及合伙两合公司 袋子以及用于制造这种袋子的薄膜管

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH384452A (de) * 1961-04-21 1964-11-15 Gutmann Bernhard Kunststoffbeutel
US3175752A (en) * 1963-05-03 1965-03-30 Union Carbide Corp Package tearing means
DE1208681B (de) * 1959-12-19 1966-01-05 Procter & Gamble Beutelaehnliche Verpackung aus thermo-plastischem Material mit einem Aufreissband
EP0406613A1 (fr) * 1989-07-01 1991-01-09 Societe Des Produits Nestle S.A. Emballage pour produit alimentaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1208681B (de) * 1959-12-19 1966-01-05 Procter & Gamble Beutelaehnliche Verpackung aus thermo-plastischem Material mit einem Aufreissband
CH384452A (de) * 1961-04-21 1964-11-15 Gutmann Bernhard Kunststoffbeutel
US3175752A (en) * 1963-05-03 1965-03-30 Union Carbide Corp Package tearing means
EP0406613A1 (fr) * 1989-07-01 1991-01-09 Societe Des Produits Nestle S.A. Emballage pour produit alimentaire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010008166U1 (de) 2010-07-27 2010-10-21 Papiersackfabrik Tenax Gmbh & Co. Kg Papiersack mit Öffnungsvorrichtung
CN113039133A (zh) * 2018-12-03 2021-06-25 比朔夫+霍莱恩欧洲股份及合伙两合公司 袋子以及用于制造这种袋子的薄膜管
US11787615B2 (en) 2018-12-03 2023-10-17 Bischof + Klein Se & Co. Kg Bag and film tube for producing such a bag

Also Published As

Publication number Publication date
DE9305473U1 (de) 1993-08-05
ATE163619T1 (de) 1998-03-15
DE59308222D1 (de) 1998-04-09
EP0620157A3 (fr) 1995-02-15
EP0620157B1 (fr) 1998-03-04

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