EP0459996A1 - Membrane de fermeture interieure amelioree pour recipients. - Google Patents

Membrane de fermeture interieure amelioree pour recipients.

Info

Publication number
EP0459996A1
EP0459996A1 EP90902433A EP90902433A EP0459996A1 EP 0459996 A1 EP0459996 A1 EP 0459996A1 EP 90902433 A EP90902433 A EP 90902433A EP 90902433 A EP90902433 A EP 90902433A EP 0459996 A1 EP0459996 A1 EP 0459996A1
Authority
EP
European Patent Office
Prior art keywords
bonding
container
innerseal
εaid
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
Application number
EP90902433A
Other languages
German (de)
English (en)
Other versions
EP0459996B1 (fr
Inventor
Theresa A Mccarthy
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.)
Unipac Corp
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0459996A1 publication Critical patent/EP0459996A1/fr
Application granted granted Critical
Publication of EP0459996B1 publication Critical patent/EP0459996B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0015—Upper closure of the 41-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0093—Membrane
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2041—Pull tabs
    • B65D2577/205—Pull tabs integral with the closure

Definitions

  • This invention relates to container innerseals, which are used in conjunction with a conventional threaded-on cap to provide an airtight, hermetically closed seal for containers. More specifically, the invention relates to an improved innerseal for a container which promotes ease of removal in conjunction with improved sealability for containers on which it is applied relative those innerseals which were heretofore known.
  • closures which incorporate an innerseal bonded with an adhesive to an upper container rim.
  • a filled container after being capped is passed through an electromagnetic field generated by induction heating equipment, which heats a foil layer within the innerseal, thereby bringing about the melting of a heat sealable polymeric film coating.
  • One system of this type which has met with significant commercial success bears the trademark "Safe-Gard", and is manufactured by the Minnesota Mining and Manufacturing Company of St. Paul, Minnesota. This system provides a hermetic seal that is suitable for use with ingestible commodities.
  • the seal is particularly effective for products which should be preferably kept free from contamination, oxidation and/or moisture.
  • it is difficult to effectively control the adhesive force by which such innerseals are bonded to the containers, due to the dependency of the sealing force on the amount of inductive power that is applied. Accordingly, it has previously been necessary to maintain strict control over the amount of power that is applied during sealing of such containers, and a wide range of seal tightness may result even if the power range is effectively controlled.
  • the amount of sealing force which could be used was limited by the fact that a proportional amount of force was needed to remove the innerseal from the container by the end user. As a result such seals had to be penetrated or scraped off with a sharp implement such as a knife. This problem was compounded by the inconsistency of sealing forces from container to container and the limitations on sealing force as discussed above.
  • a sealed container of the type which is provided with a safety innerseal includes a container body having an upper rim; and an innerseal including a body portion adapted for fitting over the upper rim, the body portion including membrane structure for preventing passage of fluid through the body portion, structure adapted for bonding the body portion against the upper rim of the container; the bonding structure including a first bonding portion which is bonded to the rim with a first bonding force and a second bonding portion which is adhered to the first bonding portion with a second bonding force, the second bonding force being less than the first bonding force, the first bonding portion having a rupture strength that is less than either of the second bonding force and the first bonding force, and gripping structure attached to an outer periphery of the body portion whereby the sealing structure will delaminate internally during removal from a container.
  • a method for forming a sealed container of the type which includes a safety innerseal includes the steps of providing a container body having an upper rim; placing an innerseal constructed as detailed above over the upper rim; and passing the container and innerseal through a heating station, whereby the innerseal is sealed onto the container body to form a tight, effective closure.
  • FIGURE 1 is a perspective view of a sealed container constructed according to a first preferred embodiment of the invention
  • FIGURE 2 is a fragmentary cross-sectional view through an innerseal portion of the container illustrated in FIGURE 1;
  • FIGURE 3 is a fragmentary cross-sectional view through an innerseal constructed according to a second preferred embodiment of the invention.
  • FIGURE 4 i ⁇ a cross-sectional view of the innerseal arrangement illustrated in FIGURE 1;
  • FIGURE 5 is a cross-sectional view of the container illustrated in FIGURE 1 depicting removal of the innerseal from the container;
  • FIGURE 6 is a graphical representation depicting opening force versus sealing power for the invention and a sealing arrangement which is previously known;
  • FIGURE 7 is a perspective view of a work station for applying and sealing innerseals according to the invention.
  • a container 10 having a neck portion 12 and a rim 14 includes a raised helical thread 16 formed upon neck portion 12 over which an appropriate sealing cap with mating threads may be applied, as is known throughout the art.
  • a sealing arrangement 18 is provided for bonding an orifice defined in container 10 by rim 14.
  • Sealing arrangement 18 includes a removable innerseal 20 having a circular body portion 22 and a flexible tab portion 24, as is shown in Figure 1.
  • Body portion 22 is sized so as to extend over the full extent of the orifice and over rim 14.
  • Tab portion 24 is connected to body portion 22 at an outer peripheral edge thereof, as is shown in Figure 1, and in the preferred embodiment is formed from the same continuously extending layered material as is body portion 22.
  • a sealing or bonding layer which includes a first bonding portion and a second bonding portion.
  • the first bonding portion adheres to rim 14 with a first bonding force, and to the second bonding portion with a second bonding force which is less than the first bonding force.
  • the first bonding portion has a rupture strength that is less than either of the first or second bonding forces.
  • the sealing layer is adhered to the remainder of the body portion with a third bonding force that is greater than the second bonding force.
  • FIG. 2 is a fragmentary cross-sectional view of the layers which together form innerseal 20.
  • a first bonding portion such as a sealing layer 26 of heat sealable material is provided on a lower surface of innerseal 20 for bonding to the upper rim 14 of container 10.
  • sealing layer 26 is formed of a multilayer polymeric film such as polyethylene or polyester and has a thickness of between 0.5-4 mils (0.0127-0.102 mm). Most preferably, the thickness of sealing layer 26 is approximately 1 mil (0.0254 mm).
  • Sealing layer 26 may alternatively be formed of polypropylene, ethylene vinyl acetate copolymer (EVA) or a similar heat sealable material having relatively low tensile and shear strengths.
  • EVA ethylene vinyl acetate copolymer
  • Layer 28 may for example be formed of Adcote 503A which is available from Morton Norwich Products, Inc. of Chicago, Illinois.
  • the layer 28 of adhesive causes sealing layer 26 to adhere to a layer 30 of fluid impervious material.
  • Layer 30 is in the preferred embodiment formed of a metallic foil. Most preferably, layer 30 is formed of aluminum foil having a thickne ⁇ of between 1 and 2 mils (0.0254-0.051 mm).
  • Reinforcement layer 34 is in the preferred embodiment formed of polyester and has a thicknes ⁇ of between 0.5-20 mils (0.0127-0.508 mm). Preferably, reinforcement layer 34 is between 2-4 mils (0.051-0.101 mm).
  • reinforcement layer 34 may be formed of paper, polyethylene, a polymeric foamed sheet material or an equivalent material having a relatively high strength again ⁇ t tearing.
  • An example of a paper which ha ⁇ been found ⁇ uitable for reinforcement layer 34 is 80 lb. bleached Kraft paper from Sorg Paper Co. of Middleton, Ohio. The weight of this paper i ⁇ 80 lbs.
  • reinforcement layer 34 could be formed from the class of materials known as non-woven fabrics such as Tyvek , which is manufactured by DuPont Corporation.
  • the various layers in innerseal 20 de ⁇ cribed above with reference to Figure 2 extend throughout both the body portion 22 and the tab portion 24 of inner ⁇ eal 20. Two ⁇ pecific con ⁇ truction ⁇ of an inner ⁇ eal con ⁇ tructed according to the embodiment of Figure 2 and which have proven ⁇ atisfactory in practice will now be detailed:
  • sealing layer 26 is formed of a film of 50 OL-2 Mylar brand film, which consists of an upper layer having a thicknes ⁇ of 0.4 mils (0.01 mm) and a lower layer having a thicknes ⁇ of 0.1 mils (0.002 mm) which is bonded to the upper layer. Both the upper and lower layer ⁇ are co po ⁇ ed of polye ⁇ ter, and the lower layer is formulated to have a lower melting point than the upper layer for sealability.
  • Adhesive layer 28 in this construction is formed of Adcote 503A adhesive, and layer 30 is formed of an aluminum foil having a thickness of approximately 1 mil (0.025 mm).
  • Reinforcement layer 34 is formed of a polye ⁇ ter film having a thickness of approximately 2 mils (0.05 mm), and is bonded to layer 30 with an adhesive layer 32 formed of Adcote 503A adhesive, which is spread to a coating weight of 0.925-1.4 grains per 24 ⁇ quare inche ⁇ (77.4-117.2 mg/200 cm 2 .
  • Adcote 503A adhesive Adcote 503A adhesive
  • Example 2 In thi ⁇ con ⁇ truction, ⁇ ealing layer 26 is formed of Mylar 5O-OL2 film which has a total thickness of approximately 0.5 mils (0.0127 mm) and is constructed in the manner de ⁇ cribed above with reference to Example 1.
  • Layer 30 i ⁇ formed of aluminum foil having a thickness of approximately 1 mil ( 0.025 mm) and is bonded to layer 26 with a layer 28 formed of Adcote 503A adhesive.
  • Reinforcement layer 34 is formed of a polyethylene foam having a thicknes ⁇ of approximately 5 mil ⁇ (0.127 mm), which is bonded to layer 30 with an adhesive layer 32 of Adcote 503A adhesive, which is spread to a coating weight of 0.925-1.4 grains per 24 square inches (77.4-117.2 mg/200 cm 2 ).
  • FIG. 3 depict ⁇ in fragmentary cro ⁇ - ⁇ ection a ⁇ econd embodiment 48 of an inner ⁇ eal constructed according to the invention.
  • Innerseal 48 includes a first bonding portion embodied as sealing layer 26, a fluid impervious layer 30, an adhesive layer 32 and a reinforcement layer 34 each of which correspond to those layers described above in reference to the embodiment of Figure 2.
  • innerseal 48 incorporates a primer layer 50 and a second bonding portion embodied as an adhesive layer 52 which together cause foil layer 30 to adhere to sealing layer 26.
  • Adhe ⁇ ive layer 52 may for example be formed of Kraton ⁇ _D 1107 adhesive, which is preferably ⁇ pread to a coating weight of approximately 1-2 grain ⁇ per each 24 ⁇ quare inche ⁇ (83.7-167.4 mg/200 cm 2 ) .
  • Primer layer 50 i ⁇ provided to cau ⁇ e adhe ⁇ ive layer 52 to adhere to fluid imperviou ⁇ layer 30 more ⁇ trongly than it adhere ⁇ to ⁇ ealing layer 26.
  • inner ⁇ eal 48 i ⁇ con ⁇ trained to delaminate along the interface between adhe ⁇ ive layer 52 and ⁇ ealing layer 26 when it is removed from a container 10.
  • Primer layer 50 is preferably formed of a chlorinated polyolefin ⁇ uch as CP 343-1 primer, which i ⁇ manufactured by the Ea ⁇ tman Chemical Corporation of King ⁇ port, Tenne ⁇ ee.
  • Example 3 Two examples of inner ⁇ eal 48 which have been constructed and have proven to perform satisfactorily in practice will now be detailed:
  • sealing layer 26 is formed of polyethylene film having a thicknes ⁇ of approximately 1 mil (0.025 mm).
  • Adhe ⁇ ive layer 52 i ⁇ formed of Kraton __ 1107 adhe ⁇ ive and is spread to a coating weight of approximately 1 grain (83.7 mg/200 cm 2 ) .
  • Primer layer 50 is formed of Eastman CP 343-1 primer.
  • Layer 30 is formed of aluminum foil having a thickne ⁇ of approximately 1 mil (0.025 mm), and i ⁇ joined to layer 34 by mean ⁇ of an adhesive layer 32 of Adcote 503A adhesive, which is spread to a coating weight of 0.925-1.4 grains per 24 in 2 (77.4-117.2 mg/200 cm 2 ) .
  • Reinforcement layer 34 is formed of a polyester film having a thickness of approximately 2 mils (0/05 mm) .
  • sealing layer 26 i ⁇ formed of a polyethylene film having a thickne ⁇ of approximately 1 mil (0.025 mm), which i ⁇ adhered to a layer 30 of aluminum foil having a thickne ⁇ of approximately 1 mil (0.025 mm) by a primer layer 50 formed of Ea ⁇ tman CP 343-1 primer and an adhe ⁇ ive layer 52 formed of Kraton _D 1107, which i ⁇ spread to a coating weight of approximately 1 grain (83.7 mg/200 cm 2 ).
  • Reinforcement layer 34 i ⁇ formed of a sheet of 80 lb./ream (130 g/m 2 ) Kraft paper having a thickne ⁇ of approximately 6 mil ⁇ (0.152 mm), which i ⁇ bonded to layer 30 by an adhe ⁇ ive coating of Adcote 503A, which i ⁇ ⁇ pread to the coating weight de ⁇ cribed in Example 1.
  • This delaminated area is depicted in Figure 5 a ⁇ a ⁇ tripped surface 38.
  • a portion 36 of seal material remains adhered to the rim 14. Because the rupture strength of sealing layer 26 is les ⁇ than either of the abovementioned bonding forces, as tab portion 24 is pulled further upwardly, the sealing layer 26 is caused to rupture and then to tear progressively around the inner edge of rim 14, until the body portion 22 is completely removed from container 10. The delaminated layer 36 of seal material will remain adhered to rim 14 and will not interfere with removal of material from container 10.
  • delamination is caused to occur within sealing layer 26 when tab portion 24 is grasped and pulled upwardly.
  • delamination ha ⁇ been found to occur ⁇ ub ⁇ tantially along the interface between the two component layer ⁇ of polye ⁇ ter within the film, with the exception that a certain amount of ⁇ plitting occurs into the lower layer during delamination.
  • delamination might initially occur on the interface portion, deviate ⁇ lightly into the lower layer of polye ⁇ ter, then return to the interface layer.
  • FIG. 6 provide ⁇ a graphical repre ⁇ entation of the advantage ⁇ of the invention over a prior art arrangement.
  • curve 54 depict ⁇ the force required to open a prior art innerseal having a single amorphous polyester adhesive layer, ⁇ uch as Vitel ® PE 100, ver ⁇ u ⁇ a power ⁇ etting in an inductive heating station which is used to melt the adhesive layer onto a container.
  • Vitel __ PE 100 is commercially available from
  • the cap was tightened with a ⁇ pring torque tester available from Owens Illinois Glas ⁇ Co. of Toledo, Ohio to 20 inch-pound ⁇ (230.5 gram-meters).
  • the innerseal was bonded to the bottle with a Lepel high frequency induction unit, Model No. T-2.5-1KC-AP-BW, made by Lepel High Frequency Laboratories, Inc. of New York City, New York.
  • the power setting of the induction unit was varied, and is expres ⁇ ed in Figure 6 a ⁇ a percentage, to determine the effect on opening (removal) force.
  • the bottle, cap, and inner ⁇ eal were allowed to cool and the cap wa ⁇ removed.
  • a 6 inch (152 mm) length of No. 898 filament tape available from Minnesota Mining and Manufacturing Company of St.
  • Thi ⁇ may be done directly, or by placing the inner ⁇ eal 20, 48 within a threaded cap member and threading the cap member onto thread ⁇ 16 of neck portion 14 ⁇ o that the innerseal 20, 48 is forced again ⁇ t rim 14, in a manner that i ⁇ known in the art.
  • the layer 30 of metallic foil is heated up, which in turn causes layer 26 to adhere to rim 14, effectively sealing innerseal 20 onto the neck portion 12 of container 10.
  • the amount of heat applied to innerseal 20 must be sufficient to cause layer 26 to melt and adhere to rim 14 with more adhe ⁇ ive force than exi ⁇ ts between layer 26 and PSA layer 52, for the reasons discu ⁇ ed above, and to en ⁇ ure proper ⁇ ealing of the container 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Closures For Containers (AREA)
  • Laminated Bodies (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Packages (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Glass Compositions (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Making Paper Articles (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

La présente invention, qui se rapporte à une membrane de fermeture intérieure hermétique facilement retirable pour récipients et à son procédé d'application, décrit un agencement amélioré comportant une partie de corps (22) destinée à s'adapter sur le bord supérieur de l'ouverture d'un récipient, ainsi qu'un élément flexible (24) fixé à la partie de corps et destiné à être saisi par l'utilisateur. La partie de corps est pourvue d'une couche adhésive inférieure, qui comporte une première partie adhésive (26) et une seconde partie adhésive (28) collée à la première partie, ainsi qu'une couche (30) destinée à empêcher le fluide de passer à travers ledit corps. La force adhésive entre les première et seconde parties adhésives est conçue plus faible que la force adhésive entre la couche adhésive et le récipient. En outre, la résistance à la rupture de la première partie adhésive est inférieure à l'une comme à l'autre des forces adhésives. Il en résulte que la force requise pour retirer la membrane de fermeture intérieure hermétique du récipient ne dépend pas de la quantité de chaleur appliquée pendant le scellage, car le décollage des couches se produit entre les deux parties adhésives dans une région située sur le bord (14) de l'ouverture du récipient, ce qui laisse un reste de la première partie adhésive fixé audit bord. En saisissant l'élément flexible et en le tirant vers le haut, l'utilisateur peut retirer la membrane de fermeture intérieure du récipient, sans qu'il soit nécessaire de trouer ou de gratter ladite membrane de fermeture au moyen d'un objet tranchant, auquel il faut fréquemment recourir pour retirer les membranes de fermeture intérieure hermétique du type habituellement utilisé aujourd'hui. Le procédé d'application d'une telle fermeture consiste à appliquer la partie de corps de la membrane de fermeture intérieure autour du bord de l'ouverture du récipient et à faire passer le récipient à travers un poste d'application de chaleur du type à induction.
EP90902433A 1989-02-27 1990-01-17 Membrane de fermeture interieure amelioree pour recipients Expired - Lifetime EP0459996B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US31439489A 1989-02-27 1989-02-27
US314394 1989-02-27
PCT/US1990/000335 WO1990009935A1 (fr) 1989-02-27 1990-01-17 Membrane de fermeture interieure amelioree pour recipients et procede d'application d'une telle fermeture

Publications (2)

Publication Number Publication Date
EP0459996A1 true EP0459996A1 (fr) 1991-12-11
EP0459996B1 EP0459996B1 (fr) 1994-12-28

Family

ID=23219788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90902433A Expired - Lifetime EP0459996B1 (fr) 1989-02-27 1990-01-17 Membrane de fermeture interieure amelioree pour recipients

Country Status (15)

Country Link
EP (1) EP0459996B1 (fr)
JP (1) JP2873252B2 (fr)
KR (1) KR100196812B1 (fr)
AT (1) ATE116251T1 (fr)
AU (1) AU639438B2 (fr)
BR (1) BR9007166A (fr)
CA (1) CA2046864A1 (fr)
DE (1) DE69015621T2 (fr)
DK (1) DK0459996T3 (fr)
ES (1) ES2065523T3 (fr)
MX (1) MX172110B (fr)
NO (1) NO308731B1 (fr)
NZ (1) NZ232233A (fr)
WO (1) WO1990009935A1 (fr)
ZA (2) ZA89737B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2558381A4 (fr) * 2010-04-14 2015-06-03 Eagile Inc Joint pour récipient avec étiquette d'identification par radiofréquence, et procédé pour sa fabrication

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121845A (en) * 1990-10-16 1992-06-16 Blanchard Floyd W Removable seal for liquid container
IT1242933B (it) * 1990-11-16 1994-05-18 Bormioli Metalplast Spa Capsula sigillata per contenitori
JPH07506794A (ja) * 1992-06-05 1995-07-27 ユニパック・コーポレイション 多層内部シールフェイシング
US7431168B2 (en) * 2001-12-21 2008-10-07 Rexam Medical Packaging Inc. Closure for a retort processed container having a peelable seal
US9540148B2 (en) * 2010-02-26 2017-01-10 Monfitello Inc. Lightweight single-dose container
US8937550B2 (en) 2010-04-14 2015-01-20 Eagile, Inc. Container seal with radio frequency identification tag, and method of making same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1536428A (en) 1976-06-21 1978-12-20 Bacofoil Ltd Heat-sealed packages
JPS5924667A (ja) * 1982-07-31 1984-02-08 大日本印刷株式会社 ポリエステル容器用蓋材
US4588099A (en) * 1985-04-25 1986-05-13 Minnesota Mining And Manufacturing Company Film seal for container
JPS63248664A (ja) * 1987-03-31 1988-10-14 東洋製罐株式会社 易開封性ヒ−トシ−ルキャップ
US4934544A (en) * 1989-02-27 1990-06-19 Minnesota Mining And Manufacturing Company Z-tab innerseal for a container and method of application
US5004111A (en) * 1989-02-27 1991-04-02 Minnesota Mining & Manufacturing Company Internally delaminating tabbed innerseal for a container and method of applying
DE3920324A1 (de) * 1989-06-21 1991-01-10 Alcan Gmbh Behaelter mit schraub- oder stuelpdeckel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9009935A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2558381A4 (fr) * 2010-04-14 2015-06-03 Eagile Inc Joint pour récipient avec étiquette d'identification par radiofréquence, et procédé pour sa fabrication

Also Published As

Publication number Publication date
KR920700154A (ko) 1992-02-19
AU4959590A (en) 1990-09-26
JPH04505598A (ja) 1992-10-01
ZA90737B (en) 1990-12-28
KR100196812B1 (ko) 1999-06-15
BR9007166A (pt) 1991-11-12
NZ232233A (en) 1993-04-28
ZA89737B (en) 1989-10-25
JP2873252B2 (ja) 1999-03-24
NO913370D0 (no) 1991-08-27
ES2065523T3 (es) 1995-02-16
CA2046864A1 (fr) 1990-08-28
DE69015621D1 (de) 1995-02-09
NO913370L (no) 1991-10-22
EP0459996B1 (fr) 1994-12-28
AU639438B2 (en) 1993-07-29
DE69015621T2 (de) 1995-06-22
NO308731B1 (no) 2000-10-23
ATE116251T1 (de) 1995-01-15
WO1990009935A1 (fr) 1990-09-07
DK0459996T3 (da) 1995-05-29
MX172110B (es) 1993-12-03

Similar Documents

Publication Publication Date Title
US5012946A (en) Innerseal for a container and method of applying
US5004111A (en) Internally delaminating tabbed innerseal for a container and method of applying
KR100196813B1 (ko) 용기의 z-탭형 내부 밀봉체
US5226281A (en) Z-tab innerseal for a container and method of application
US6156363A (en) Closure bag with internal tack surfaces
US20190225369A1 (en) Tamper Evident Tabbed Sealing Member Having A Foamed Polymer Layer
US6264098B1 (en) Tubular container with a heat seal having non-symmetrical inner and outer beads
US20050208242A1 (en) Container closure
AU639438B2 (en) Improved innerseal for a container and method of applying
AU722202B2 (en) Peelable heat seals and method for making same
MXPA97000508A (en) Dependable thermosells and method to produce my

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

17P Request for examination filed

Effective date: 19910923

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19920810

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

REF Corresponds to:

Ref document number: 116251

Country of ref document: AT

Date of ref document: 19950115

Kind code of ref document: T

EAL Se: european patent in force in sweden

Ref document number: 90902433.3

REF Corresponds to:

Ref document number: 69015621

Country of ref document: DE

Date of ref document: 19950209

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2065523

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed
ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

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
REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: MINNESOTA MINING AND MANUFACTURING COMPANY -DANN A

NLS Nl: assignments of ep-patents

Owner name: UNIPAC CORPORATION (A CANADA CORPORATION)

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010102

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010103

Year of fee payment: 12

Ref country code: DE

Payment date: 20010103

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20010104

Year of fee payment: 12

Ref country code: AT

Payment date: 20010104

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010105

Year of fee payment: 12

Ref country code: DK

Payment date: 20010105

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20010123

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20010208

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010212

Year of fee payment: 12

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020117

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020118

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020131

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020131

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020131

BERE Be: lapsed

Owner name: UNIPAC CORP.

Effective date: 20020131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020801

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020801

EUG Se: european patent has lapsed

Ref document number: 90902433.3

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020117

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

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020930

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20020801

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030922

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: 20050117