EP0912400B1 - Verfahren zur herstellung von öffnungsmitteln für eine verpackung - Google Patents
Verfahren zur herstellung von öffnungsmitteln für eine verpackung Download PDFInfo
- Publication number
- EP0912400B1 EP0912400B1 EP97932703A EP97932703A EP0912400B1 EP 0912400 B1 EP0912400 B1 EP 0912400B1 EP 97932703 A EP97932703 A EP 97932703A EP 97932703 A EP97932703 A EP 97932703A EP 0912400 B1 EP0912400 B1 EP 0912400B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cuts
- width
- plastic material
- packaging
- polyamide
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
- B65B61/182—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying tear-strips or tear-tapes
Definitions
- the invention relates to a method for producing a Packaging consisting essentially of plastic film, with means of opening the packaging without the aid of Tool and packaging that can be produced afterwards.
- Packaging that without the use of tools, such as. Knives, can openers etc., can be opened, i.e. so-called easy-open systems have been used in recent years because of the significant simplification of handling the consumer has become increasingly important.
- plastic film packaging is so-called tear strips known either in the film material are incorporated or subsequently on the filled Packaging by welding on at the same time Embossing.
- a packaging is known from US Pat. No. 4,840,270, into which a removal opening is punched which is then covered by a partially removable strip. The one for this attached cuts are curved and self-contained around a corresponding removal opening define. When the cover strip is pulled off, a complete one is immediately obtained Removal opening exposed from which the product can be removed.
- the object of the present invention is to overcome the disadvantages to overcome the known prior art and a To provide procedures with which for packaging made of plastic film reliably an easy-open concept can be realized.
- this object is achieved in that the Plastic film fed from the roll to a cutting station will be in one of the size of the final packaging adapted clock cuts are attached, each of which is substantially rectilinear and their Width is less than the width of the plastic film and cut through the thickness completely; that in the area the cuts cover them completely Cover strips are applied in a sealing but removable manner; and that the plastic film prepared in this way in in a manner known per se for the final packaging is processed further.
- the cuts by a number of partial cuts separated by webs appropriate.
- the width of the Partial cuts and / or the webs in different places the cuts are the same or, in the second alternative, to be different.
- the invention further provides that a number n first sequence of partial sections Partial cuts of constant width alternating with a one Number m of second sections comprising partial cuts Partial cuts of constant width is applied, the Width of the partial sections belonging to the first sequence of the width of the partial cuts belonging to the second sequence is different.
- n 1 and m is 1.
- n 1 and m is 2.
- polypropylene one or multilayer polyamide
- polypropylene with the polyamide layer is preferably either a coextruded polyamide or consists of at least two polyamide layers, wherein which is a layer of a polyamide with high barrier properties while the other layer is made of a polyamide with high shrinkage.
- A is preferred as the material for the cover strip Laminate used, the inner one, above the cuts in the Plastic film arranged layer of an adhesive peelable plastic consists, preferably of a copolymer made of polyethylene and polypropylene.
- the method of the present invention realizes several Advantages that - at least in this combination - at Processes according to the prior art have not yet been implemented have been.
- On the other hand is a manufactured by the inventive method Packaging by pulling off the cover strip over the Cut and break up the packaging due to deformation the same particularly easy in the area of the cut open and remove the content.
- the advantages described are particularly noticeable, if the filled packaging undergoes a sterilization process is subjected.
- the system described is without able to withstand temperatures and internal pressures to withstand such a process, on the other the packaging material is subject to such Heat treatment of shrinkage, which is the breaking up of the Packaging by deformation after pulling off the Masking tape over the cut further facilitated.
- the Advantages described with packaging that one Sterilization process are known with Easy-Open systems not accessible.
- the use of the preferred materials both for the plastic film as well as for the cover strip bring even more advantages.
- the special preferred laminate plastic film offers enough Stability that no stretch due to the deduction from the roll and there is no tearing of the cut made.
- each one in one of the size of the final packaging adapted stroke made cuts, its width is less than the width of the plastic film and the die Plastic film completely cut through by a number of partial cuts separated by webs, is generally an increased mechanical stability after achievable packaging achieved. This increased mechanical stability is also reflected in the Withdrawal behavior during film transport in the Packaging machine in such a way that it is used by thinner foils is possible. It also diminishes there is a risk of the film tearing.
- the quality of the sealed seam increases the higher strength.
- the heating energy requirement, which is required when the cover strip is sealed is reduced.
- Another procedural advantage is that by cutting through a number of through webs separate partial sections is attached, the feed of the heating energy required for sealing from the Tear strip opposite side is simplified.
- the packaging that can be produced by the method according to the invention shows a higher compared to transport stress mechanical stability, which not only leads to a reduction the product loss caused by transport damage leads, but especially if it is perishable Products, reduces the risk of microbial spoilage.
- the width of the partial cut delimited by two webs larger or is less than or equal to the width of a web.
- FIG. 1 can be seen for packaging using plastic film 10 from a supply roll rollers used to smooth the film run (not shown) fed to a cutting station 20.
- a Cut 11 by means of a cutting tool 25.
- the cut 11 becomes centered in the film 10 attached, the width of the cut 11 so too choose is that - depending on the plastic material used - by further pulling off the film Elongation or tearing of the cut is avoided. It is essential that the cut 11 is not just one Weakening of the plastic material causes, but this completely severed.
- the subsequent station 30 for applying the cover strips 15 these are based on a known Technology manufactured, supplied and applied. This is done first a feed from a supply roll 32 a cutting station 34, in the cover strip 15 in the desired Width, e.g. 6 to 12 mm. These masking strips are applied to a vacuum Stamp 35 of a sealing device 36 fixed. Subsequently the sealing device 36 is rotated by 180 ° and the with Vacuum-fixed cover strips 15 on the next one supplied Cut 11 in the plastic film 10 at one Temperature of approx. 210 ° C sealed so that the cut is completely sealed.
- the packaging a known hose forming and filling station (not shown) in which e.g. on sausage-like product is produced.
- this is according to the invention preferred material from two layers of polypropylene 12, 12 ', between which a single or multi-layer polyamide layer 13 is arranged, wherein the polyamide layer be co-extruded polyamide or from two polyamide layers 13 ', 13' ', of which the upper, i.e. the the outer polypropylene layer 12 facing layer 13 ' a polyamide with high barrier properties, while the lower, i.e. that of the inner polypropylene layer 12 'facing layer 13' 'of a polyamide with high Shrinkage properties exist.
- the plastic material can be a packaging material be made available, on the one hand, excellent Barrier properties against oxygen and water vapor and also optimal on the polyamide layer is printable.
- the Covering strip 15 covering width and length attached, which is preferably also constructed as a laminate. It is important to ensure that the one facing the cut Layer 16 of the laminate has the necessary adhesive properties owns, i.e. be fixed firmly over the cut can, but at the same time optimally peelable, i.e. removable is.
- a copolymer of is particularly preferred Polyethylene and polypropylene proved.
- the arranged above Layers 17, 18 are in their composition less critical. In the illustrated embodiment, can it is a PET layer 17 and a final one Act polypropylene layer 18, but also other materials are conceivable.
- FIG. 3 shows one of a sequence of webs 11a constant width separate sections 11b constant Width existing cut, the width of the partial cuts a multiple of the width of the partial cuts separating webs.
- FIG. 4 shows a sectional design in which the width of the Partial cuts 11b approximately the width of the between the Partially arranged webs 11a corresponds.
- FIG. 5 shows an embodiment of the cut design, in which the width of the arranged between the partial cuts 11b Webs 11a is smaller than the width of the partial cuts, the partial cuts from an alternating There is a sequence of partial cuts, whereby again the Width of a partial cut larger or smaller than that of the following partial section.
- FIG. 6 shows an embodiment of the cut design, in which a sequence 11c consisting of two partial cuts alternating with a sequence 11d from a partial section is attached.
- the partial cuts included in the first sequence have the same width as each other however, versus the width of that in the second order included partial cut shorter.
- the width of the between the various sequences arranged webs is about the total cutting width approximately constant.
- the Width of the between the sections of the first sequence Arranged webs be approximately equal to the width of the between arranged the partial sections of the second sequence Stege.
- FIG. 7 shows a sectional design, which are similar to that shown in FIG. 4 shown cut execution is, however, both the width of the webs as well as that of the partial cuts is significantly reduced, so that a perforation line is formed in the present case becomes.
- the method according to the invention is particularly suitable Way for the production of cylindrical packaging in Sausage form, which is either a sausage product can act for the food sector or around sausage-presented animal food products, such as a so-called dog sausage, the latter being the Filling from a moist to semi-moist chunky dog food can exist.
- a sausage product can act for the food sector or around sausage-presented animal food products, such as a so-called dog sausage, the latter being the Filling from a moist to semi-moist chunky dog food can exist.
- dog sausage so-called dog sausage
Description
Claims (17)
- Verfahren zur Herstellung einer Verpackung, die im wesentlichen aus Kunststoffolie (10) besteht, mit Mitteln zum Öffnen der Verpackung ohne Zuhilfenahme von Werkzeug, wobei die Kunststoffolie (10) von der Rolle einer Schneidestation (20) zugeführt wird, in der in einem der Größe der endgültigen Verpackung angepaßten Takt Schnitte (11) angebracht werden, deren Breite geringer ist als die Breite der Kunststoffolie (10) und diese in der Dicke vollständig durchtrennen, im Bereich der Schnitte (11) diese jeweils vollständig überdeckende Abdeckstreifen (15) dichtend, aber abziehbar aufgebracht werden und die so vorbereitete Kunststoffolie (10) anschließend in an sich bekannter Art und Weise zur endgültigen Verpackung weiterverarbeitet wird, dadurch gekennzeichnet, daß die Schnitte (11) jeweils im wesentlichen geradlinig ausgebildet werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Breite der Schnitte (11) 1/4 bis 3/4 der Breite der Kunststoffolie (10) ausmacht.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Breite der Schnitte (11) 1/3 bis 1/2 der Breite der Kunststoffolie (10) ausmacht.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Breite der Schnitte (11) etwa 1/3 der Breite der Kunststoffolie (10) ausmacht.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Schnitte (11) durch eine Anzahl von durch Stege (11a) getrennten Teilschnitten (11b) angebracht werden.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Breite der Teilschnitte (11b) und/oder der Stege (11a) an verschiedenen Stellen der Schnitte (11) gleich ist.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Breite der Teilschnitte (11b) und/oder der Stege (11a) an verschiedenen Stellen der Schnitte (11) verschieden sind.
- Verfahren nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß eine Anzahl n von Teilschnitten (11b) umfassende erste Abfolge von Teilschnitten (11b) konstanter Breite alternierend mit einer eine Anzahl m von Teilschnitten (11b) umfassenden zweiten Abfolge von Teilschnitten konstanter Breite angebracht wird, wobei die Breite der zur ersten Abfolge zählenden Teilschnitte (11b) von der Breite der zur zweiten Abfolge zählenden Teilschnitte verschieden ist.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß n gleich 1 und m gleich 1 ist.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß n gleich 1 und m gleich 2 ist.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß als Kunststoffolie (10) ein Laminat mit folgender Abfolge von Schichten verwendet wird: Polypropylen (12), ein- oder mehrschichtiges Polyamid (13; 13', 13"), Polypropylen (12').
- Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß die Polyamidschicht (13) ein coextrudiertes Polyamid ist.
- Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß die Polyamidschicht (13) aus mindestens zwei Polyamidschichten (13', 13") besteht, wobei die eine Schicht (13') aus einem Polyamid mit hohen Sperreigenschaften besteht, während die andere Schicht (13") aus einem Polyamid mit hohem Schrumpfungsvermögen besteht.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß als Material für den Abdeckstreifen (15) ein Laminat verwendet wird, dessen innere, über den Schnitten in der Kunststoffolie angeordnete Schicht (16) aus einem adhäsiven abziehbaren Kunststoff besteht.
- Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß die innere Schicht (16) aus einem Copolymer aus Polyethylen und Polypropylen besteht.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Aufbringen der Abdeckstreifen (15) unter Temperatureinwirkung erfolgt.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996124042 DE19624042C2 (de) | 1996-06-17 | 1996-06-17 | Verfahren zur Herstellung einer Verpackung sowie danach herstellbare Verpackung |
DE19624042 | 1996-06-17 | ||
DE19634759 | 1996-08-28 | ||
DE19634759A DE19634759C2 (de) | 1996-06-17 | 1996-08-28 | Verfahren zur Herstellung einer Verpackung sowie danach herstellbare Verpackung |
PCT/DE1997/001293 WO1997048607A1 (de) | 1996-06-17 | 1997-06-17 | Verfahren zur herstellung von öffnungsmitteln für eine verpackung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0912400A1 EP0912400A1 (de) | 1999-05-06 |
EP0912400B1 true EP0912400B1 (de) | 2002-01-30 |
EP0912400B2 EP0912400B2 (de) | 2005-08-03 |
Family
ID=26026633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97932703A Expired - Lifetime EP0912400B2 (de) | 1996-06-17 | 1997-06-17 | Verfahren zur herstellung von öffnungsmitteln für eine verpackung |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0912400B2 (de) |
AU (1) | AU715834B2 (de) |
CA (1) | CA2258645A1 (de) |
DE (2) | DE19634759C2 (de) |
DK (1) | DK0912400T3 (de) |
NO (1) | NO985859L (de) |
NZ (1) | NZ333794A (de) |
WO (1) | WO1997048607A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10338244A (ja) * | 1997-06-03 | 1998-12-22 | Houseki Planning:Kk | テープ張り密封袋及びその製法 |
WO2005105582A1 (de) | 2004-04-30 | 2005-11-10 | Robert Bosch Gmbh | Verpackungsmaschine zur herstellung von schlauchbeuteln und schlauchbeutel |
US7216764B2 (en) * | 2004-08-16 | 2007-05-15 | Sealstrip Corporation | Easy-open packages |
FI121371B (fi) * | 2008-12-05 | 2010-10-29 | Lamican Oy | Menetelmä ja laitteisto sulkuliuskan asettamiseksi |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4840270A (en) * | 1987-12-21 | 1989-06-20 | Nice-Pak Products, Inc. | Re-sealable label flap |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE644299A (de) * | 1963-02-25 | |||
SE329968B (de) * | 1964-01-16 | 1970-10-26 | Tetra Pak Int | |
DE3828355A1 (de) * | 1988-08-20 | 1990-02-22 | Hoechst Ag | Mehrschichtige verpackungsfolie mit gasbarriere |
DE4041743A1 (de) * | 1990-12-24 | 1992-06-25 | Schickedanz Ver Papierwerk | Kontinuierliches verfahren zum herstellen wiederverschliessbarer folienverpackungen |
DE4238127A1 (de) † | 1992-11-12 | 1994-05-19 | Wolff Walsrode Ag | Mehrschichtige coextrudierte, schrumpffähige verstreckte Schlauchfolie |
SE502181C2 (sv) * | 1994-02-18 | 1995-09-11 | Tetra Laval Holdings & Finance | Sätt och anordning för överföring av lappar till en löpande materialbana |
FR2736330B1 (fr) * | 1995-07-05 | 1997-08-22 | Techmay Sa | Procede d'emballage sous pellicule de film dechirable et emballage obtenu |
-
1996
- 1996-08-28 DE DE19634759A patent/DE19634759C2/de not_active Expired - Fee Related
-
1997
- 1997-06-17 DE DE59706253T patent/DE59706253D1/de not_active Expired - Fee Related
- 1997-06-17 CA CA002258645A patent/CA2258645A1/en not_active Abandoned
- 1997-06-17 NZ NZ333794A patent/NZ333794A/xx unknown
- 1997-06-17 WO PCT/DE1997/001293 patent/WO1997048607A1/de active IP Right Grant
- 1997-06-17 AU AU36186/97A patent/AU715834B2/en not_active Ceased
- 1997-06-17 EP EP97932703A patent/EP0912400B2/de not_active Expired - Lifetime
- 1997-06-17 DK DK97932703T patent/DK0912400T3/da active
-
1998
- 1998-12-14 NO NO985859A patent/NO985859L/no not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4840270A (en) * | 1987-12-21 | 1989-06-20 | Nice-Pak Products, Inc. | Re-sealable label flap |
Also Published As
Publication number | Publication date |
---|---|
DE19634759C2 (de) | 2003-11-06 |
DE59706253D1 (de) | 2002-03-14 |
EP0912400A1 (de) | 1999-05-06 |
NZ333794A (en) | 2000-08-25 |
DE19634759A1 (de) | 1998-03-05 |
AU3618697A (en) | 1998-01-07 |
EP0912400B2 (de) | 2005-08-03 |
DK0912400T3 (da) | 2002-05-13 |
NO985859D0 (no) | 1998-12-14 |
CA2258645A1 (en) | 1997-12-24 |
AU715834B2 (en) | 2000-02-10 |
NO985859L (no) | 1998-12-14 |
WO1997048607A1 (de) | 1997-12-24 |
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