EP0214791A2 - Récipient avec un dispositif de fermeture réutilisable - Google Patents
Récipient avec un dispositif de fermeture réutilisable Download PDFInfo
- Publication number
- EP0214791A2 EP0214791A2 EP86306451A EP86306451A EP0214791A2 EP 0214791 A2 EP0214791 A2 EP 0214791A2 EP 86306451 A EP86306451 A EP 86306451A EP 86306451 A EP86306451 A EP 86306451A EP 0214791 A2 EP0214791 A2 EP 0214791A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tape
- exterior
- container
- layer
- adhesive layer
- 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
Links
- 239000010410 layer Substances 0.000 claims abstract description 69
- 239000012790 adhesive layer Substances 0.000 claims abstract description 44
- 230000001681 protective effect Effects 0.000 claims abstract description 42
- 230000004888 barrier function Effects 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 28
- 239000000853 adhesive Substances 0.000 claims description 19
- 230000001070 adhesive effect Effects 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 3
- -1 for example Substances 0.000 description 16
- 229920001577 copolymer Polymers 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000000047 product Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 229920001169 thermoplastic Polymers 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 5
- 239000004816 latex Substances 0.000 description 5
- 229920000126 latex Polymers 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000011087 paperboard Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 229920000874 polytetramethylene terephthalate Polymers 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 238000009455 aseptic packaging Methods 0.000 description 4
- 229920001400 block copolymer Polymers 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 229920006298 saran Polymers 0.000 description 4
- 239000000341 volatile oil Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000010902 straw Substances 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- XMGQYMWWDOXHJM-JTQLQIEISA-N (+)-α-limonene Chemical compound CC(=C)[C@@H]1CCC(C)=CC1 XMGQYMWWDOXHJM-JTQLQIEISA-N 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 2
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 229920002633 Kraton (polymer) Polymers 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229920003182 Surlyn® Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229920006243 acrylic copolymer Polymers 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- QWDQYHPOSSHSAW-UHFFFAOYSA-N 1-isocyanatooctadecane Chemical compound CCCCCCCCCCCCCCCCCCN=C=O QWDQYHPOSSHSAW-UHFFFAOYSA-N 0.000 description 1
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 description 1
- 229920001824 Barex® Polymers 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000004957 Zytel Substances 0.000 description 1
- 229920006102 Zytel® Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical group C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 125000003709 fluoroalkyl group Chemical group 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000019612 pigmentation Effects 0.000 description 1
- 229920002587 poly(1,3-butadiene) polymer Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 1
- GRWFGVWFFZKLTI-UHFFFAOYSA-N α-pinene Chemical compound CC1=CCC2C(C)(C)C1C2 GRWFGVWFFZKLTI-UHFFFAOYSA-N 0.000 description 1
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
- 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
- B65D5/065—Rectangular containers having a body with gusset-flaps folded outwardly or adhered to the side or the top of the container with supplemental means facilitating the opening, e.g. tear lines, tear tabs
-
- 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
- B65D5/42—Details of containers or of foldable or erectable container blanks
- B65D5/70—Break-in flaps, or members adapted to be torn-off, to provide pouring openings
- B65D5/708—Separate tearable flexible elements covering a discharge opening of a container, e.g. adhesive tape
Definitions
- This invention relates to containers having reclosable closure systems, more particularly aseptic containers suitable for packaging liquids.
- Aseptic packaging is a technique for creating a shelf-stable container for food (and in some cases pharmaceuticals) by placing a commercially sterile product into a commercially sterile container.
- the technique offers an alternative to retorting and to frozen or refrigerated distribution of foods; it offers advantages of wider packaging material choice, improved product quality and the ability to create some bulk packages that could not be filled using other techniques.
- United States Patent No. 3,616,114 discloses reusable, composite, adhesive sealing tapes for releasably interconnecting container parts and the like, such as corrugated boxes, paper bags, etc.
- the tapes, cut to a suitable length and width, include at least two tape portions or laminations,namely a main tape portion and a partly coplanar reinforcing tape portion.
- the inner end of the reinforcing portion is firmly attached to the midportion of the main portion.
- the latter has a first area adapted to be attached to one side of a first container part, while a second area thereof, including its free end, is adapted to be attached to a second container part which should be releasably interconnected with said first container part; the reinforcing portion is at least partly attachable to the opposite side of the first container part.
- a turned-up section formed from the inner end of the reinforcing portion may constitute a hinge for said first area of the main portion when it is attached to the respective container part.
- this tape appears to be suitable as a reclosable closure for liquid-filled containers, it does not address the problem of substances in the juices reacting with the pressure-sensitive adhesive or the problem of seepage of liquid into the plies of a paperboard container via the cut edges of the opening.
- United States Patent No. 4,372,460 discloses an easy opening closure system comprising a container end portion having an opening therein, an exterior tape which comprises a backing and a pressure-sensitive adhesive layer and is situated circumjacent the opening; and a protective tape which comprises a barrier layer that provides a barrier to essential oils contained in beverages and an oil-resistant thermoplastic adhesive layer, the protective tape being firmly bonded to the bottom surface of the container end portion circumjacent the opening by means of the thermoplastic adhesive layer and to the exterior tape in the area of the opening by means of the pressure-sensitive adhesive layer and the thermoplastic adhesive layer.
- this closure does not address the problem of reclosability.
- This invention involves a readily reclosable container suitable for aseptic packaging of liquids.
- the present invention provides a reclosable closure assembly for a container having an interior wall portion, an exterior wall portion, and an opening therein, said closure assembly comprising:
- the closure assembly of the present invention combines the desirable properties of essential oil-resistance, easy-opening, reclosability, and oxygen-impermeability.
- the closure assembly of the present invention is particularly suitable for packaging natural juice and artificial drink products which contain essential oils such as d-limonene and may be used with products packed in aseptic containers.
- a typical carton blank is designated generally by the numeral 10 in Figure 1.
- the blank 10 is preferably made of semiflexible sheet material, for example, paperboard such as used in making juice cartons.
- a typical blank comprises, from exterior layer to interior layer, a layer of polyethylene, a layer comprising four plies of paper board, a layer of aluminum foil, and a layer of "Surlyn".
- "Surlyn" is a matrix of hydrocarbons in which are embedded relatively short polyethylene chains and granules of polymethacrylate linked with sodium ions.
- the interior layer forms the surface which contacts the contents of the container.
- the exterior layer forms the surface which contacts the surrounding atmosphere.
- Protective tape 20 comprises a barrier layer 22 which is firmly adhered to the interior wall portion 24 of the container 12 adjacent pour hole 26 by means of a an adhesive layer 28, preferably a pressure-sensitive adhesive layer.
- Target tape 30 comprises a backing 32 which is firmly adhered to the exterior wall portion 34 of the container 12 by means of an adhesive layer 36, preferably a pressure-sensitive adhesive.
- On the surface of backing 32 opposite the adhesive layer 36 is a layer of release coating material 38, e.g, low adhesion backsize.
- Exterior tape 40 has a backing 42 and a pressure-sensitive adhesive layer 44 by means of which layer the exterior tape 40 can be releasably adhered to the release layer 38 of target tape 30.
- a small portion 46 of target tape 30 is turned up at one end and firmly attached to one end of exterior tape 40.
- the advantage of this preferred construction is that exterior tape 40 will not delaminate the exterior wall portion 34 of container 12.
- Target tape 30 has an opening 48 therein which is coincident with pour hole 26.
- the barrier 22 of protective tape 20 is firmly adhered to exterior tape 40 in the area of pour hole 26 by means of adhesive layer 44 of exterior tape 40 and adhesive layer 28 of protective tape 20.
- grip portion 50 of exterior tape 40 which comprises a strip of film 51 adhered to exterior tape 40 in order to prevent that portion of exterior tape 40 from adhering to target tape 30. Additionally, the grip portion 50 of exterior tape 40 may be embossed (not illustrated) in a manner which facilitates gripping of exterior tape 40.
- container 12 contain a vent hole 52 in addition to pour hole 26 in order to facilitate pouring of the liquid contents of container 12.
- adhesive layer 44 of exterior tape 40 and adhesive layer 28 of protective tape 20 must be firmly adhered to each other in the area of vent hole 52, and target tape 30 must have an opening 54 coincident with vent hole 52.
- Pour hole 26 may be of any shape and size so long as it permits a level of bonding between exterior tape 40 and protective tape 20 which will assure retention of aseptic conditions.
- the shape and size of vent hole 52 must also conform to this requirement.
- a preferred pour hole 26 has an area of about 100 to about 200 square millimeters. The shape illustrated in the drawings has been found to be suitable.
- Exterior tape 40 is to provide means for sealing the contents of container 12 from atmospheric oxygen.
- Exterior tape 40 may comprise the various materials which are well known in the art to tape backings, adhesives, primers, and the like. Particular suitable materials for exterior tapes which can be used as container closures have been described In U.S. Pat. Nos. 3,389,827 (Abere et al) and 3,990,603 (Brochman), incorporated herein by reference, and discussed below.
- Backing 42 of exterior tape 40 preferably will be up to about 30 mils (750 micrometers) in thickness and it should be capable of being pulled back upon itself without rupture. As a practical matter backing 42 should have a uniform thickness across its width and along its length. For convenience of removal of adhesive layer 44 from target tape 30, backing 42 should neither break nor elongate more than 25% under a tension of 2 pounds (0.9 kg).
- Suitable films include polyethylene, polypropylene, polyethylene, terephthalate, polytetramethylene terephthalate, polytetramethylene terephthalate, polycarbonate, 6-6,Nylon (e.g., that available under trade designation "Zytel ST 801 HS" from E. I.
- duPont de Nemours Co. physical blends of polytetramethylene terephthalate/polyethylene, physical blends of polytetramethylene terephthalate/polyethylene terephthalate, physical blends of polytetramethylene terephthalate/phenoxy, glycol modified polyethylene terephthalate, unplasticized polyvinylchloride, polyethylene terephthalate/polyethylene composites and films derived from a graft copolymer comprising acrylonitrile/methylmethacrylate copolymer grafted onto an acrylonitrile/butadiene copolymer backbone (e.g., that available under the trade designation "Barex" from Vistron Corporation).
- a graft copolymer comprising acrylonitrile/methylmethacrylate copolymer grafted onto an acrylonitrile/butadiene copolymer backbone
- a particularly suitable film is a 2-mil (50 micrometer) biaxially-oriented film of polyethylene terephthalate, the film also containing a polycarbonate slip agent of the type disclosed in U.S. Pat. No. 3,720,732 (Sevenich), incorporated herein by reference.
- Other representative materials include thin metal foils (e.g., aluminum, steel, etc.) as well as metal foil-film composites.
- Preferred pressure-sensitive adhesives for layer 44 are the block copolymer-containing adhesives described in said U.S. Patent No. 3,389,827.
- Preferred block copolymers are those having the general configuration A-B-A, wherein each A is a thermoplastic polymer block having a glass transition temperature above room temperature and having an average molecular weight between about 5,000 and 125,000 and B is a polymer block of a conjugated diene having an average molecular weight between about 15,000 and 250,000.
- One particularly suitable pressure-sensitive adhesive of this type comprises 100 parts by weight of "Kraton 1101” (a block copolymer of styrene and butadiene having one butadiene polymer block of 70,000 molecular weight and two styrene polymer blocks-of 15,000 molecular weight, commercially available from Shell Chemical Company), 76 parts by weight of "Piccolyte A-135" (an alpha-pinene resin, commercially available from Hercules Chemical Company) and 0.8 parts by weight of "Ethyl Antioxidant 330” (1,3,5-trimethyl-2,4,6-tris[3,5- deteriorate-butyl-4-hydroxybenzyl]benzene, commercially available from Ethyl Corporation.
- "Kraton 1101” a block copolymer of styrene and butadiene having one butadiene polymer block of 70,000 molecular weight and two styrene polymer blocks-of 15,000 molecular weight, commercially available
- suitable pressure-sensitive adhesives include the acrylic copolymer-containing adhesives described in said U.S. Pat. No. 3,389,827.
- a particularly suitable adhesive of this type comprises an isooctyl acrylate (90)/acrylic acid (10) copolymer which has been crosslinked through addition of benzoyl peroxide in an amount of about 0.01 to 0.5 percent by weight of the acrylic copolymer.
- Tapes useful as exterior tapes 40 preferably have the shear characteristics described in aforementioned U.S. Patent No. 3,389,827.
- Backing 42 can be rendered opaque by means of pigmentation of said backing as the backing is extruded, by means of vapor coating the tape backing with a thin layer of metal (e.g., aluminum, silver, copper, etc.) or by means of coating a dispersion of pigment onto the tape backing.
- a vapor coat may be desirable since it functions to improve the impermeability (e.g., to air and moisture) of backing 42.
- the closure assembly be as impermeable to atmospheric oxygen as the remainder of container 12. In order for the closure to perform in the desired manner when utilized for aseptic packaging, it is sufficient that the oxygen impermeability of the closure assembly be 0.7-1.0 cc/100 square inches, as measured by ASTM D3985 (1984).
- a typical aseptic package has an oxygen impermeabaility value of about 0.025 cc/100 square inches.
- Backing 42 vapor coated with aluminum has been found to be useful in permitting the closure to meet the oxygen permeability requirement.
- One particularly useful material for a topcoat is "Vitel PE 222", discussed above as also being a suitable primer.
- protective tape 20 is to prevent the contents of the container 12 from migrating into the plies of the papaerboard which form the container body and discoloring same.
- Barrier layer 22 of protective tape 20 provides a barrier to the essential oils contained in a particular juice or drink product. While functioning as a barrier, barrier layer 22 must also have properties which permit it to be torn and removed in the area of pour hole 26 when exterior tape 40 is pulled to expose pour hole 26. Thus, the tear strength of barrier layer 22 should not exceed the strength of bond between exterior tape 40 and protective tape 20. Also, the tear strength of barrier layer 22 should not exceed the strength of the bond between barrier layer 22 and adhesive layer 28 of protective tape 20. Barrier layer 22 may be, for example, about 0.1 to 2 mils in thickness. A barrier layer of about 0.25 to 1 mils in thickness is preferred in the practice of the present invention.
- Suitable materials for barrier layer 22 of protective tape 20 include plastic films comprising copolymers of vinylidene chloride and vinylchloride (e.g., the film available under the trade designation "Saran Wrap” from Dow Chemical Company), and films comprising copolymers of vinylidene chloride and acrylonitrile (e.g., the resin available under the trade designation "Saran F-310" from Dow Chemical Company).
- a preferred barrier layer 22 is prepared form an aqueous dispersion of latex (e.g., the dispersion available under the trade designation "Saran Latex XD-30373” from Dow Chemical Company).
- barrier layer 22 include thin metal foils (e.g., those comprising aluminum or tin) or metal foil-film composites.
- Adhesives suitable for adhesive layer 28 of protective tape 20 must be resistant to the oil (e.g., essential oils) contained in the product being packaged in order to provide suitable bonding performance. Generally, an adhesive coating of about 0.5 to 3 mils in thickness is suitable in the practice of the present invention.
- Preferred adhesives for adhesive layer 28 of protective tape 20 can be selected from those pressure-sensitive adhesives that are preferred for adhesive layer 44 of exterior tape 40.
- the adhesive When the pressure-sensitive adhesive is to be applied to an intact barrier layer 22, the adhesive may simply be extrusion coated or solvent-cast onto the layer.
- an aqueous dispersion such as the above-mentioned "Saran Latex XD-30373" is employed to prepare barrier layer 22, it has been found convenient to first extrude the pressure-sensitive adhesive onto a carrier web such as a 1 or 2 mil (25 or 50 micrometers) untreated, biaxially-oriented polypropylene film and to then coat the resulting adhesive layer with the latex dispersion with a Mayer bar or rotogravure coater.
- the carrier web functions as a carrier substrate during tape manufacture and as a removable liner.
- a preferred protective tape comprises a 0.5 mil (12.5 micrometers) barrier layer prepared from the above-mentioned "Saran Latex XD-30373” and a pressure-sensitive adhesive layer prepared the previously described composition containing 100 parts by weight “Kraton 1101” copolymer, 76 parts by weight Piccolyte A-135" resin, and 0.8 parts by weight "Ethyl Antioxidant 330".
- thermoplastic adhesives are preferred for layer 28 of protective tape 20
- thermoplastic adhesives can also be used.
- target tape 30 is to provide the surface to which the reclosable portion of the exterior tape 40 is releasably adhered.
- target tape 30 also serves to firmly attach the exterior tape 40 to container 12.
- Target tape 30 comprises a backing 32, one major surface of which bears a layer 36 of adhesive, preferably pressure-sensitive adhesive, the other major surface of which bears a layer 38 capable of releasably adhering exterior tape 40.
- Backing 32 preferably will be up to about 3 mils and most preferably about 1 to 2 mils in thickness.
- Backing 32 of the target tape 30 can be selected from the same materials that are suitable as backings 42 for exterior tape 30.
- Preferred materials for backing 32 for the target tape 30 are polypropylene and polyester.
- one end of the backing 32 of the target tape 30 extend beyond the container top panel 13 to which the target tape 30 is attached (see Fig. 6) to form an extended portion 33.
- Such an extended portion 33 prevents the liquid that is being poured from the container 12 from dribbling down the side of the container.
- the length of the extended portion 33 of the backing 32 can vary and its optimal length is dependent upon the height of the container, and configuration of the pour hole 26. For a typical container, e.g. one having a height of about 9 inches and a capacity of about 64 ounces, the extension can range from about 1/16 inch to about 1/4 inch.
- the material forming the backing 32 of the target tape 30 should be sufficiently rigid so that the extended portion 33 thereof will have sufficient strength to resist the force of the liquid as it is being poured out of the container.
- Pouring edges having a shape similar to that of the pouring edge contemplated for use herein are described, for example, in U.S. Patent Nos. 4,113,103 and 4,126,263, incorporated herein by reference.
- Adhesives suitable for the adhesive layer 36 of target tape 30 are preferably pressure-sensitive adhesives.
- Pressure-sensitive adhesives suitable for adhesive layers 36 are the same as those that are suitable as pressure-sensitive adhesives for exterior tape 40.
- An example of a preferred pressure-sensitive adhesive for adhesive layer 36 of target tape 30 is a conventional block copolymer system similar to those described in U.S. Patent No. 3,239,478.
- Other types of adhesives, e.g. thermoplastic adhesives, can be used for adhesive layer 36.
- Preferred release coating materials for layer 38 include conventional low adhesion backsize compounds, hereinafter alternatively referred to as LABs.
- LABs conventional low adhesion backsize compounds
- Representative examples of conventional low adhesion backsize compounds suitable for use in this invention are fully described in U.S. Patents 2,607,711, 2,532,011, and 3,318,852, all of which are incorporated herein by reference.
- U.S. Patent 2,607,711 describes LABs formed of a copolymer of an ester of the class consisting of higher alkyl acrylates and methacrylates wherein the higher alkyl radical has a length of at least 12 carbon atoms, and an acid of the class consisting of acrylic acid and methacrylic acid.
- the acrylic acid or methacrylic acid can be replaced in part by another copolymerizable ethylenic monomer, e.g., acrylonitrile or methacrylonitrile.
- U.S. Patent 3,318,852 described LABs formed of a copolymer derived from an ethylenically unsaturated monomer containing a functional group forming a conjugated system with the ethylenic linkage wherein between about 10 and about 90 mole percent of the polymerized units of the copolymer contain a free carboxylic acid group as the functional group forming the conjugated system and all other functional groups forming the conjugated system are hydrolyzable to a free carboxyl acid group, and 20-90 percent by weight of monomeric units derived from an ethylenically unsaturated monomer containing a fluoroalkyl group of at least six carbon atoms.
- the solubility of the copolymer can be enhanced by the use of a third comonomer, also ethylenically unsaturated, containing a functional group which forms a conjugated system with its unsaturated bond and is hydrolyzable to a carboxyl group.
- a third comonomer also ethylenically unsaturated, containing a functional group which forms a conjugated system with its unsaturated bond and is hydrolyzable to a carboxyl group.
- Each of the monomers contributes to the overall properties of the copolymer.
- U.S. Patent 2,532,011 describes LABs comprising polyvinyl carbamate polymers wherein the carbamate side chains terminate with an alkyl group more than five carbon atoms in length, and preferably at least 14. These can be made by reacting polyvinyl alcohol with an appropriate isocyanate having a terminal alkyl group.
- An example is polyvinyl N-octadecyl carbamate, made by reacting polyvinyl alochol and octadecyl isocyanate, which has 18 carbon atoms in the nitrogen-bonded side chain alkyl groups.
- These LABs are most preferred for the present invention.
- Target tape 30 preferably will be up to about 5 mils, and most preferably about 3 to 4 mils, in thickness.
- Protective tape 20, target tape 30, and exterior tape 40 and all of the components of these three tapes must be non-toxic.
- the components of the aforementioned tapes must be approved by the Food and Drug Administration.
- the closure assembly illustrated in Figs. 4 and 5 allow a shelf-life for the contents of the container of up to about one year, without the necessity of refrigeration.
- the closure assembly of the present invention provides several advantages over reclosable closure systems of the prior art.
- First the system provides a container for liquids that is reclosable.
- the protective tape eliminates the possibility of liquids permeating the plies of the paperboard stock, thus assuring retention of the aesthetic qualities of the container.
- Third, the exterior tape/target tape reclosable composite reduces oxygen permeation of the container, thus allowing freshness of the contents for periods of time of up to one year.
- the closure assembly reduces the likelihood of the contents squirting about randomly upon opening the container, compared to puncture-type closures.
- the elements of the closure assembly can be applied to the blank by hand, but are preferably applied by means of conventional tape applicators that are known to those skilled in the art.
- the preferred method of application is as follows:
- Steps (5) and (6) are highly preferable in order to provide a strong bond between exterior tape 40 and protective tape 20.
- Alternative methods for providing the effect of steps (5) and (6) can be employed in lieu of vacuuming and heat bonding.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cartons (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Making Paper Articles (AREA)
- Bag Frames (AREA)
- Adhesive Tapes (AREA)
- Packages (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76969885A | 1985-08-27 | 1985-08-27 | |
US769698 | 1985-08-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0214791A2 true EP0214791A2 (fr) | 1987-03-18 |
EP0214791A3 EP0214791A3 (en) | 1987-09-02 |
EP0214791B1 EP0214791B1 (fr) | 1989-07-26 |
Family
ID=25086273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86306451A Expired EP0214791B1 (fr) | 1985-08-27 | 1986-08-20 | Récipient avec un dispositif de fermeture réutilisable |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0214791B1 (fr) |
JP (1) | JPH0755707B2 (fr) |
BR (1) | BR8603995A (fr) |
CA (1) | CA1279046C (fr) |
DE (1) | DE3664612D1 (fr) |
ES (1) | ES2001585A6 (fr) |
MX (1) | MX171887B (fr) |
ZA (1) | ZA865794B (fr) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2210359A (en) * | 1987-09-24 | 1989-06-07 | Dainippon Printing Co Ltd | Carton equipped with liquid pouring-out device |
EP0367501A1 (fr) * | 1988-10-29 | 1990-05-09 | Holmesworth International Limited | Conteneurs |
EP0444862A1 (fr) * | 1990-02-28 | 1991-09-04 | Nippon Paper Industries Co., Ltd. | Récipient scellé en papier, muni d'un dispositif d'ouverture |
EP0540923A1 (fr) * | 1991-10-17 | 1993-05-12 | Sankyo Company Limited | Récipient acec une feuille de fermeture refermable |
EP0577865A1 (fr) | 1992-07-06 | 1994-01-12 | The Procter & Gamble Company | Emballage aseptique pour liquides pourvu d'un élément d'ouverture refermable |
FR2767512A1 (fr) * | 1997-08-22 | 1999-02-26 | Hoerauf Michael Maschf | Recipient comportant une ouverture de remplissage |
WO2000076866A1 (fr) * | 1999-06-11 | 2000-12-21 | Upm-Kymmene Corporation | Recipient a liquides a element de refermeture |
WO2002026565A2 (fr) | 2000-09-28 | 2002-04-04 | Carlo Antonio Camorani | Conteneur |
US6579390B2 (en) * | 2001-05-09 | 2003-06-17 | International Paper | Container patch and method of formation |
DE3844985C2 (de) * | 1987-09-24 | 2003-09-25 | Dainippon Printing Co Ltd | Ausgießvorrichtung mit Zuglasche |
EP3684709A4 (fr) * | 2017-09-22 | 2021-09-29 | Smart Planet Technologies, Inc. | Structure composite ayant des surfaces refermables et réutilisables pour emballer des articles |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019114635A1 (de) * | 2019-05-31 | 2020-12-03 | Sig Technology Ag | Vorrichtung und verfahren zum nachformen der giebelflächen von verpackungen mit schrägem giebel |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3687352A (en) * | 1971-03-08 | 1972-08-29 | Edward Kalajian | Container closure |
US4163506A (en) * | 1978-10-23 | 1979-08-07 | Minnesota Mining And Manufacturing Company | Closure assembly having a tear template |
EP0004932A2 (fr) * | 1978-04-17 | 1979-10-31 | Tetra Laval Holdings & Finance SA | Dispositif d'ouverture refermable dans la paroi d'un récipient d'emballage et procédé pour sa fabrication |
US4372460A (en) * | 1981-05-18 | 1983-02-08 | Minnesota Mining And Manufacturing Company | Oil-resistant closure system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61164119U (fr) * | 1985-04-02 | 1986-10-11 |
-
1986
- 1986-08-01 ZA ZA865794A patent/ZA865794B/xx unknown
- 1986-08-04 MX MX003365A patent/MX171887B/es unknown
- 1986-08-19 CA CA000516245A patent/CA1279046C/fr not_active Expired - Fee Related
- 1986-08-20 EP EP86306451A patent/EP0214791B1/fr not_active Expired
- 1986-08-20 DE DE8686306451T patent/DE3664612D1/de not_active Expired
- 1986-08-22 BR BR8603995A patent/BR8603995A/pt not_active IP Right Cessation
- 1986-08-25 JP JP61198792A patent/JPH0755707B2/ja not_active Expired - Lifetime
- 1986-08-26 ES ES8601349A patent/ES2001585A6/es not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3687352A (en) * | 1971-03-08 | 1972-08-29 | Edward Kalajian | Container closure |
EP0004932A2 (fr) * | 1978-04-17 | 1979-10-31 | Tetra Laval Holdings & Finance SA | Dispositif d'ouverture refermable dans la paroi d'un récipient d'emballage et procédé pour sa fabrication |
US4163506A (en) * | 1978-10-23 | 1979-08-07 | Minnesota Mining And Manufacturing Company | Closure assembly having a tear template |
US4372460A (en) * | 1981-05-18 | 1983-02-08 | Minnesota Mining And Manufacturing Company | Oil-resistant closure system |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2210359A (en) * | 1987-09-24 | 1989-06-07 | Dainippon Printing Co Ltd | Carton equipped with liquid pouring-out device |
GB2210359B (en) * | 1987-09-24 | 1992-02-12 | Dainippon Printing Co Ltd | Carton equipped with liquid pouring-out device |
DE3844985C2 (de) * | 1987-09-24 | 2003-09-25 | Dainippon Printing Co Ltd | Ausgießvorrichtung mit Zuglasche |
EP0367501A1 (fr) * | 1988-10-29 | 1990-05-09 | Holmesworth International Limited | Conteneurs |
EP0444862A1 (fr) * | 1990-02-28 | 1991-09-04 | Nippon Paper Industries Co., Ltd. | Récipient scellé en papier, muni d'un dispositif d'ouverture |
EP0540923A1 (fr) * | 1991-10-17 | 1993-05-12 | Sankyo Company Limited | Récipient acec une feuille de fermeture refermable |
EP0577865A1 (fr) | 1992-07-06 | 1994-01-12 | The Procter & Gamble Company | Emballage aseptique pour liquides pourvu d'un élément d'ouverture refermable |
FR2767512A1 (fr) * | 1997-08-22 | 1999-02-26 | Hoerauf Michael Maschf | Recipient comportant une ouverture de remplissage |
WO2000076866A1 (fr) * | 1999-06-11 | 2000-12-21 | Upm-Kymmene Corporation | Recipient a liquides a element de refermeture |
WO2002026565A2 (fr) | 2000-09-28 | 2002-04-04 | Carlo Antonio Camorani | Conteneur |
US6579390B2 (en) * | 2001-05-09 | 2003-06-17 | International Paper | Container patch and method of formation |
EP3684709A4 (fr) * | 2017-09-22 | 2021-09-29 | Smart Planet Technologies, Inc. | Structure composite ayant des surfaces refermables et réutilisables pour emballer des articles |
Also Published As
Publication number | Publication date |
---|---|
AU593002B2 (en) | 1990-02-01 |
ES2001585A6 (es) | 1988-06-01 |
BR8603995A (pt) | 1987-04-07 |
JPS6252040A (ja) | 1987-03-06 |
DE3664612D1 (en) | 1989-08-31 |
MX171887B (es) | 1993-11-23 |
EP0214791A3 (en) | 1987-09-02 |
EP0214791B1 (fr) | 1989-07-26 |
CA1279046C (fr) | 1991-01-15 |
ZA865794B (en) | 1987-04-29 |
JPH0755707B2 (ja) | 1995-06-14 |
AU6092986A (en) | 1987-03-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4781323A (en) | Reclosable closure assembly for container | |
USRE33893E (en) | Reclosable closure assembly for container | |
US4372460A (en) | Oil-resistant closure system | |
US4236652A (en) | Dispenser package | |
US3946872A (en) | Sealable and sterilizable package | |
US3454210A (en) | Easy opening and reclosable package,film therefor and process | |
CA2007748C (fr) | Contenant d'emballage (nourriture) | |
US3335939A (en) | Resealable package closure | |
CA1042838A (fr) | Emballage pouvant etre scelle et sterilise | |
US5353985A (en) | Package | |
US4364989A (en) | Snack food packaging material | |
EP0214791B1 (fr) | Récipient avec un dispositif de fermeture réutilisable | |
EP0366175A1 (fr) | Poche souple autodéployante | |
CA2008012A1 (fr) | Contenant sterilisable en autoclave, avec couvercle facile a enlever | |
EP3303172B1 (fr) | Pour produits de consommation récipient rescellable | |
US20160068323A1 (en) | Recloseable Stand-Up Flexible Packages | |
US4386705A (en) | Ice cream carton | |
JP2003522077A (ja) | 引裂調節閉鎖テープ、および引裂調節閉鎖テープを含む容器 | |
US5840385A (en) | Cover for product package and method for producing same | |
US4577777A (en) | Tape closure for a can end | |
US4564121A (en) | Tape closure for a can end | |
US5704539A (en) | Reducible volume containers | |
US4813545A (en) | Rectangular paperboard package | |
WO2010126730A2 (fr) | Emballage avec un ou plusieurs points d'accès pour rompre un ou plusieurs joints d'étanchéité et accéder au contenu de l'emballage | |
JP2003237816A (ja) | 蓋 材 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): CH DE FR GB IT LI SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): CH DE FR GB IT LI SE |
|
17P | Request for examination filed |
Effective date: 19880301 |
|
17Q | First examination report despatched |
Effective date: 19880527 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI SE |
|
ITF | It: translation for a ep patent filed | ||
REF | Corresponds to: |
Ref document number: 3664612 Country of ref document: DE Date of ref document: 19890831 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
ITTA | It: last paid annual fee | ||
EAL | Se: european patent in force in sweden |
Ref document number: 86306451.5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19950713 Year of fee payment: 10 Ref country code: CH Payment date: 19950713 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19950717 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19950725 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19950727 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19960820 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19960821 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19960831 Ref country code: CH Effective date: 19960831 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19960820 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19970430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19970501 |
|
EUG | Se: european patent has lapsed |
Ref document number: 86306451.5 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050820 |