EP1092638A1 - Capsule en matière plastique - Google Patents

Capsule en matière plastique Download PDF

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Publication number
EP1092638A1
EP1092638A1 EP00810025A EP00810025A EP1092638A1 EP 1092638 A1 EP1092638 A1 EP 1092638A1 EP 00810025 A EP00810025 A EP 00810025A EP 00810025 A EP00810025 A EP 00810025A EP 1092638 A1 EP1092638 A1 EP 1092638A1
Authority
EP
European Patent Office
Prior art keywords
sealing
section
closure cap
cap
container mouth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00810025A
Other languages
German (de)
English (en)
Inventor
Lino Dreyer
Udo Bösl
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.)
Crown Packaging Technology Inc
Original Assignee
Crown Cork and Seal Technologies Corp
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
Priority claimed from EP99810936A external-priority patent/EP1092639A1/fr
Application filed by Crown Cork and Seal Technologies Corp filed Critical Crown Cork and Seal Technologies Corp
Priority to EP00810025A priority Critical patent/EP1092638A1/fr
Priority to AT00966310T priority patent/ATE266580T1/de
Priority to CNB008170568A priority patent/CN1188323C/zh
Priority to ES00966310T priority patent/ES2220543T3/es
Priority to BR0014752-4A priority patent/BR0014752A/pt
Priority to MXPA02003700A priority patent/MXPA02003700A/es
Priority to DE60010734T priority patent/DE60010734T2/de
Priority to AU76753/00A priority patent/AU7675300A/en
Priority to PCT/GB2000/003886 priority patent/WO2001026989A1/fr
Priority to EP00966310A priority patent/EP1220792B1/fr
Publication of EP1092638A1 publication Critical patent/EP1092638A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt

Definitions

  • the invention relates to a plastic closure cap the features of the preamble of the independent claims.
  • plastic caps For closing containers, e.g. bottles, it is known to use plastic caps.
  • a common area of application is beverage bottles, especially bottles of carbonated beverages. Especially for those bottles where the content is below is under increased pressure, the requirements are on the Tightness great. On the one hand, it must be ensured that No leaks occur even with increased internal pressure. On the other hand, the closure cap is to be prevented jumps off the bottle the first time you open it, as soon as that Thread on the cap with the thread on the bottle except Intervention device.
  • a typical form of sealing lips are so-called trumpet seals. It extends from an approximately cylindrical one Root section an approximately frustoconical sealing section.
  • the sealing lip is inserted into a container mouth, the frustoconical sealing section is folded back and puts on the container mouth. This will make a Contact pressure and thus a sealing effect is achieved.
  • trumpet seals give satisfactory results Sealing results.
  • a problem with such known trumpet seals is that the screwing force when the cap is placed on the Container mouth is relatively large because of folding the frustoconical section requires considerable forces are.
  • Another disadvantage with known trumpet seals is that often the time when the sealing effect is canceled, is not exactly predictable. Depending on Tolerances of the container mouth is the contact pressure of the truncated cone-shaped sealing part on the container mouth larger or less large, so that the sealing effect of the Sealing section depending on the to be closed Container can be different.
  • Olive seals have a convex sealing section, which on the sealing approximately cylindrical inner surface of a container mouth should concern.
  • the sealing section (the convex sealing surface) at Unscrew the cap first with the Container mouth, especially the inner edge of the top Container edge engages.
  • the container mouth is common damaged in the area of the inner edge. This can cause that the sealing part of the sealing lip during installation Contact with the damaged container mouth as well is damaged. A reduced sealing effect is therefore the Episode.
  • Another object of the invention is to provide a To create a sealing cap with a sealing lip, which the problem of damage to the sealing zone through contact with a damaged container mouth during the installation process is avoided.
  • these tasks are performed with a sealing cap with the characteristics of the characteristic part of the independent Claims resolved.
  • the cap for closing a container mouth consists of a plastic material and has a cap bottom and one extending from the edge of the cap bottom Cap apron on.
  • the cap is with at least one Provide sealing lip.
  • the sealing lip has a root section and a sealing portion.
  • the root section is with the Cap is connected and the sealing section is against one Sealing surface of the container mouth can be pressed on.
  • the sealing lip between the root section and the Provide sealing section with a material weakening.
  • a material weakening in the Comparison to conventional such sealing lips (e.g. so-called trumpet seals) can be the sealing section be more mobile with respect to the root section, i.e. easier be pivoted.
  • the material weakening has several Advantages: The force to pivot the sealing section is reduced.
  • the forces to be applied are Touchdown less.
  • the place where the sealing lip is kinked during the fitting process exactly predeterminable.
  • the Trumpet seal according to the invention always in the range of Material weakening. Therefore, the location of the sealing section predeterminable when the closure is attached. This results in a smaller spread of the gas blow-off angle.
  • Under Gas blow-off angle is understood to be the angle of rotation at which Unscrewing the seal out of engagement with the Container mouth and excess pressure escape from the container can. Due to the more precisely definable contact pressure and the Predeterminable surface against which the sealing lip against the Container is pressed, this angle of rotation is precisely defined.
  • the root section is approximately cylindrical and extends from the cap bottom.
  • the sealing section is approximately frustoconical and extends from the end of the cap facing away from the Root section. This embodiment is a classic trumpet seal. But there would also be others Sealing lips conceivable.
  • the sealing lip, especially the root section, also from the cap apron radially inwards instead of from the cap base in the axial direction extend below.
  • the weakening of the material is advantageously circumferential. This means that the weakening of the material over one Angle range extends from 360 °. This makes a special one uniform sealing behavior over the entire circumference of the Closure. Alternatively, it is also conceivable, only to provide material weaknesses in segments. Such Material weaknesses in segments have the advantage that an exact crease line is also defined. Also be Zones with lower contact pressure seen in the circumferential direction generated. In these zones, the sealing effect is due to raised internal pressure first. It results in a controlled gas blowing behavior in the area of Weakening of materials.
  • the present invention is particularly simple realize if the material weakening as a notch on one of the Surfaces of the sealing lip is formed. Training as Notch is particularly in terms of manufacturing advantageous. Such a notch on the surface of the sealing lip facing away from the cap bottom arranged. Such an arrangement is particularly in With regard to the demoldability of such a closure cap advantageous from an injection mold.
  • the closure cap can be designed as an inner seal.
  • the sealing section extends from the root section radially outwards.
  • the weakening of material is included preferably radially outside of through the center of the Cylindrical surface extending at the root section. The thus weakened material acts as a joint between Root section and sealing section.
  • the sealing lip can also be used as an external seal be trained.
  • the sealing section extends from Root section is radially inward and the material weakening is radially inside through the center of the root section extending cylinder surface arranged.
  • the material weakening on or is particularly advantageous immediately adjacent to the inner or outer surface of the Root section arranged. This way, an exact defined joint formed.
  • the root section is usually relatively stable and serves as relatively little deformable abutment. If the Material weakening directly on those acting as abutments Joins the root section, there is an articulated joint Connection of the sealing section to the essentially immovable root section.
  • the degree of material weakening is deliberately set so that on the one hand the pivotability of the sealing section based on the root section is increased, however on the other hand, a sufficiently high contact pressure of the Sealing section on a sealing surface of a container mouth can be achieved.
  • the thickness is Sealing lip in the area of material weakening about 30 - 90%, advantageously about 2/3 of the thickness of the sealing section.
  • a closure cap made of plastic in which the sealing lip has a root section and a sealing section has, the root portion with the closure cap is connected and the sealing section when attached Cap on a sealing surface of the container mouth can be pressed.
  • the sealing section between an initial layer and one Sealing position swiveling.
  • the sealing section is pivotable connected to the root section.
  • the sealing section points a sealing part and one different from the sealing part Actuator on.
  • the sealing section is in the initial position with the actuating part with the upper edge of the container mouth engaging.
  • the sealing section is in the sealing position can be pressed against the container mouth with the sealing part.
  • the sealing part of the sealing section on a convex sealing surface seals the sealing lip according to this Embodiment similar to a conventional one Olive seal. At most damaged during the installation process Parts are due to the pivoting of the sealing section not in contact with the container mouth.
  • the actuating section serves to trigger the pivoting movement.
  • the operating section has a substantially straight or a concave insertion section.
  • the introductory part goes preferably steady (i.e. without steps) into the sealing surface of the Sealing part over.
  • the sealing section is preferably approximately radially outwards from the wall section.
  • the root section can also be provided with a support shoulder, which the Sealing section holds approximately in the initial position until the Sealing section during the installation process with the container mouth in Intervention device and is pivoted.
  • the closure cap 1 essentially consists from a cap base 2 and a cap apron 4.
  • the Cap apron 4 extends from the edge 3 of the cap base.
  • the Cap apron 4 has a thread 13 on its inside provided, by means of which the cap 1 on a Container mouth 30 (see Figure 3) can be placed.
  • the sealing lip 5 consists essentially from a root section 6 and a sealing section 7.
  • the Root section 6 is approximately cylindrical and extends from the inside of the cap base 2.
  • the Sealing section 7 is a frustoconical section educated. The sealing section 7 extends from the Cap base 2 facing away from end 10 of root section 6.
  • the sealing lip 5 is also provided with a circumferential notch 8 Mistake.
  • the notch 8 is between the root section 6 and the Sealing section 7 arranged.
  • the notch 8 leads to one Material weakening of the sealing lip 5 and increases Pivotability of the sealing section 7 based on the Root section 6.
  • the notch 8 creates a joint between Root section 6 and sealing section 7.
  • the notch 8 is circumferential trained and located on the the cap bottom facing surface of the sealing lip 5, in particular the Sealing section 7.
  • the closure cap 1 is also known to the person skilled in the art additional elements.
  • the Cap 1 have a guarantee tape 14, which with Retaining elements 15 with retaining elements of a container in Intervention can be brought.
  • sealing lips 12 can be be provided. With the sealing lips 12 can simultaneously Sealing effects on additional surface sections of a Container mouth can be achieved.
  • FIG. 2 shows an enlarged illustration of the sealing lip 5.
  • the circumferential notch 8 is on the cap base 2 facing away Surface of the sealing portion 7 attached.
  • the notch 8 lies in or radially outside a cylindrical plane Z through the outer surface 11 of the approximately cylindrical root section 6 is formed.
  • the sealing section 7 can thus be compared the relatively inflexible root section 6 relative just swivel.
  • the thickness of the sealing section In the area of the notch 8 is the thickness of the sealing section reduced.
  • the thickness d in the area of the notch 8 is approximately 0.4 mm while the thickness D of the sealing section 7 is about 0.6 mm is.
  • the root section 6 has a length L of approximately 3.5 mm.
  • the sealing section 7 is something with a length 1 of 2.8 mm shorter training. This means that the Sealing section 7 preferably on a cylindrical inner surface of the Container mouth creates (see Figure 3).
  • the pivotability of the sealing section 7 requires a certain amount Elasticity of the cap.
  • the cap is out Plastic material, typically made of polyethylene or Made of polypropylene.
  • the one that forms a truncated cone Sealing section 7 extends at an angle a with respect the screw axis of the cap.
  • the angle a is in embodiment shown about 30 °.
  • FIG. 4 shows a structure similar to that of FIGS. 1-3 Sealing lip 5, which is designed as an outer seal.
  • Sealing lip 5 which is designed as an outer seal.
  • the sealing section 7 extends radially inward.
  • a Notch 8 is radially inside through the center 11 'of the Root section 6 formed cylindrical surface Z arranged.
  • Material weakening formed by a notch 9, which on the Cap bottom 2 facing surface of the sealing section 7 is arranged.
  • the notch 9 is outside of that through the middle '' of the root section formed cylinder surface Z 'in the area the cutting line between the outer surface 11 of the Root section and the surface of the sealing section 7 arranged.
  • Figure 6 is a similar embodiment as in the Figures 2 and 5 shown.
  • the weakening of the material is formed by individual depressions 18, which are arranged in segments.
  • the segment-like Recesses 18 are outside the cylinder surface Z through the Arranged in the middle of the root section 6 and define one exact crease line.
  • the contact pressure of the Sealing section 7 against the inner surface 31 of the container mouth 30 in the area of the depressions 18 compared to the Contact pressure between the recesses 18 is reduced. In the area the depressions 18 will therefore first be gas blown off. On this defines precisely defined ventilation behavior achieved.
  • the root section 6 is generally proportionate trained stable. For example, a thickness T of 1.0 mm selected.
  • the invention cannot be applied to others, either Use sealing lip arrangements shown in detail. Essential is that a weakening of material leads to a decoupling between a pivotable sealing section and a relative stable root section leads.
  • FIG. 7 An alternative exemplary embodiment is shown schematically in FIG shown the invention.
  • the closure cap 1 according to FIG. 7 has a cap bottom 2 and a cap apron 4, which extends from the edge 3 of the cap base 3.
  • the cap has a circumferential sealing lip 35.
  • the sealing lip 35 consists essentially of a root section 36 and one Sealing section 37. Sealing section 37 is via a joint 43 pivotally connected to the root portion 36.
  • the sealing section 37 is in an initial position I.
  • Figure 7 is the beginning of the screwing on Locking cap shown. At the beginning of the unscrewing process the sealing section 37 is in the initial position I.
  • the sealing section 37 has a sealing part 38 and one Actuating part 39 on.
  • the actuating part 39 is with a Insertion surface 40 provided.
  • the sealing part 38 is with a Provide sealing surface 41.
  • the actuating part 39 comes with the Insertion surface 40 with the upper edge 33 of the container mouth 30 engaged. Damage B ⁇ on the upper edge 33 of the Container mouth 30 can damage the B Guide insertion surface 40 (see enlarged illustration in FIG 10a).
  • the sealing lip 35 is also with a support shoulder 42 Mistake.
  • the support shoulder 42 prevents the Sealing section 37 at a time when the sealing section 37 is not yet in engagement with the container mouth.
  • the Support shoulder 42 thus ensures that when unscrewing the Cap 1 of the actuating part 39 with the container mouth engages.
  • the closure cap 1 can also have an outer seal 44 be provided.
  • the cap 1 is more advanced Attachment process shown.
  • the sealing section 37 By continuing to screw on the sealing section 37 is pivoted about the joint 43.
  • the Sealing section 37 slides with the insertion surface 40 over the upper edge 33 of the container mouth 30. Any damage take place in the area of the insertion surface 40 and thus outside the sealing surface 41.
  • FIG. 9 shows the screw cap 1 screwed on shown.
  • the sealing section 37 is in a sealing position S.
  • the sealing surface 41 of the sealing part 38 lies on one Sealing surface 32 of the container mouth 30 in a sealing manner.
  • the Damage B (see Figure 10c in the area of the insertion surface) is located above the sealing surface 41.
  • the damage B is not on the inside of the container mouth 30.
  • FIGS. 10a to 10c The steps from FIGS. 7 to 9 are in FIGS. 10a to 10c shown in an enlarged view. Damages B 'on upper edge of the container mouth 30 (chipping at Glass bottles or PET bottles) can damage B lead in the area of the insertion surface 40.
  • the sealing surface 14 is convex while the insertion surface 40 is one straight and has a concave section.
  • the convex Sealing surface 41 enables the sealing part 38 to roll off easily over the inner surface of the container mouth.
  • the insertion area first has a straight section 46 adjacent end 45 of the sealing section 47 (see Figure 10a).
  • the Actuator 39 comes with the straight section 46 or with a concave section over the inner surface of the Container mouth.
  • the insertion surface first has a straight one Section 46 adjacent to the end 45 of the sealing section 37 (see Figure 10a).
  • the operating part 39 comes with the straight Section 46 or with a concave section 47, which is on connects straight section 46, first with the container mouth 30 engaged (see Figure 10a).
  • the concave section 47 goes continuously into the convex sealing surface 41.
  • the effect of the support shoulder 42 is shown schematically in FIG shown. Before the sealing portion 37 engages with the Device mouth ends, the support shoulder 42 prevents Fold down the sealing section 37 in the direction of the arrow.
  • convex and concave refer to this Relationship to the outer shape of the sealing lip in one Section plane seen through the axis of the cap.
EP00810025A 1999-10-14 2000-01-11 Capsule en matière plastique Withdrawn EP1092638A1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP00810025A EP1092638A1 (fr) 1999-10-14 2000-01-11 Capsule en matière plastique
EP00966310A EP1220792B1 (fr) 1999-10-14 2000-10-11 Bouchon de fermeture constitu de matiere plastique
BR0014752-4A BR0014752A (pt) 1999-10-14 2000-10-11 Tampa de fechamento de material plástico para fechar uma boca do recipiente
CNB008170568A CN1188323C (zh) 1999-10-14 2000-10-11 塑料制成的封闭盖子
ES00966310T ES2220543T3 (es) 1999-10-14 2000-10-11 Tapon de cierre hecho de material plastico.
AT00966310T ATE266580T1 (de) 1999-10-14 2000-10-11 Verschlusskappe aus kunststoff
MXPA02003700A MXPA02003700A (es) 1999-10-14 2000-10-11 Tapa de cierre de material plastico.
DE60010734T DE60010734T2 (de) 1999-10-14 2000-10-11 Verschlusskappe aus kunststoff
AU76753/00A AU7675300A (en) 1999-10-14 2000-10-11 Closure cap made of plastics material
PCT/GB2000/003886 WO2001026989A1 (fr) 1999-10-14 2000-10-11 Bouchon de fermeture constitué de matière plastique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99810936A EP1092639A1 (fr) 1999-10-14 1999-10-14 Capsule en matière plastique
EP99810936 1999-10-14
EP00810025A EP1092638A1 (fr) 1999-10-14 2000-01-11 Capsule en matière plastique

Publications (1)

Publication Number Publication Date
EP1092638A1 true EP1092638A1 (fr) 2001-04-18

Family

ID=26073750

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00810025A Withdrawn EP1092638A1 (fr) 1999-10-14 2000-01-11 Capsule en matière plastique
EP00966310A Expired - Lifetime EP1220792B1 (fr) 1999-10-14 2000-10-11 Bouchon de fermeture constitu de matiere plastique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00966310A Expired - Lifetime EP1220792B1 (fr) 1999-10-14 2000-10-11 Bouchon de fermeture constitu de matiere plastique

Country Status (9)

Country Link
EP (2) EP1092638A1 (fr)
CN (1) CN1188323C (fr)
AT (1) ATE266580T1 (fr)
AU (1) AU7675300A (fr)
BR (1) BR0014752A (fr)
DE (1) DE60010734T2 (fr)
ES (1) ES2220543T3 (fr)
MX (1) MXPA02003700A (fr)
WO (1) WO2001026989A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102666297A (zh) * 2009-12-22 2012-09-12 日本皇冠塞株式会社 合成树脂制喷口止挡器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2535320T3 (es) * 2010-12-23 2015-05-08 Obrist Closures Switzerland Gmbh Cierre para un envase
MX345271B (es) * 2012-01-06 2017-01-24 Closure Systems Int Inc Cierre sin revestimiento.
JP7382631B2 (ja) 2019-11-12 2023-11-17 三笠産業株式会社 キャップ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994004423A1 (fr) * 1992-08-11 1994-03-03 Crown Cork Ag Bouchon de fermeture en plastique
DE4401751A1 (de) * 1994-01-21 1995-06-08 Alcoa Gmbh Verpackwerke Verschluß für Behälter
US5836464A (en) * 1988-06-17 1998-11-17 Closures And Packaging Services Limited Closure for beverage container

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836464A (en) * 1988-06-17 1998-11-17 Closures And Packaging Services Limited Closure for beverage container
WO1994004423A1 (fr) * 1992-08-11 1994-03-03 Crown Cork Ag Bouchon de fermeture en plastique
DE4401751A1 (de) * 1994-01-21 1995-06-08 Alcoa Gmbh Verpackwerke Verschluß für Behälter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102666297A (zh) * 2009-12-22 2012-09-12 日本皇冠塞株式会社 合成树脂制喷口止挡器
CN102666297B (zh) * 2009-12-22 2013-10-09 日本皇冠塞株式会社 合成树脂制喷口止挡器

Also Published As

Publication number Publication date
CN1409679A (zh) 2003-04-09
EP1220792B1 (fr) 2004-05-12
MXPA02003700A (es) 2002-10-23
DE60010734D1 (de) 2004-06-17
WO2001026989A1 (fr) 2001-04-19
BR0014752A (pt) 2002-07-02
ATE266580T1 (de) 2004-05-15
DE60010734T2 (de) 2004-10-07
ES2220543T3 (es) 2004-12-16
CN1188323C (zh) 2005-02-09
AU7675300A (en) 2001-04-23
EP1220792A1 (fr) 2002-07-10

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