US20010030165A1 - One-piece dosing cap - Google Patents

One-piece dosing cap Download PDF

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Publication number
US20010030165A1
US20010030165A1 US09/756,391 US75639101A US2001030165A1 US 20010030165 A1 US20010030165 A1 US 20010030165A1 US 75639101 A US75639101 A US 75639101A US 2001030165 A1 US2001030165 A1 US 2001030165A1
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US
United States
Prior art keywords
cap
dosing
skirt
attachment means
container
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.)
Abandoned
Application number
US09/756,391
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English (en)
Inventor
Andre Jacobs
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8175694&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20010030165(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of US20010030165A1 publication Critical patent/US20010030165A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • 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
    • B65D41/26—Caps or cap-like covers serving as, or incorporating, drinking or measuring vessels
    • B65D41/265—Caps or cap-like covers serving as, or incorporating, drinking or measuring vessels with integral internal sealing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0081—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of objects with parts connected by a thin section, e.g. hinge, tear line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/772—Articles characterised by their shape and not otherwise provided for

Definitions

  • the present invention relates to dosing caps, typically those which are used to dose home care or fabric care products.
  • Plastic dosing caps for dosing treatment compositions in a dish or laundry washing solution are representative of the various dosing caps to which the present invention can apply.
  • such dosing caps comprise a main dosing compartment, which is typically in the shape of a cylinder, closed at the top by a top wall.
  • This dosing compartment is surrounded by an external skirt, extending outwardly therefrom, which is provided with screw threads or other means for releasably securing said dosing cap onto the neck of a container, for example a bottle.
  • Such dosing caps are very easily manufactured by a injection molding process because they are typically made out of a thermoplastic resin, for example a polyethylene or a polypropylene.
  • the mold comprises at least two parts: a first half which defines the outer surface of the cap, including the top wall.
  • the other half acts like a plug into the first outer half, and defines the inner surfaces of the cap.
  • the inner half of the mold is fitting into the outer half, but it then needs to be extracted therefrom, so that the mold can be opened, and the molded cap can be ejected therefrom.
  • the dosing compartment be slightly conical, so that the inner half of the injection mold can slide out of the outer half during the opening movement of the mold. At least, said dosing compartment cannot present any undercut, or as a maximum, a very limited undercut, which will allow the movable portion of the mold to slide therefrom by using the properties of flexibility of the thermoplastic material.
  • the external diameter of the dosing compartment cannot exceed a certain value, because there must be sufficient space between the screw threads and the external surface of the dosing compartment. So for a given screwing diameter of the dosing cap, the internal diameter of the dosing compartment is limited and all the sections along the height of the dosing compartment must be smaller than the first section at the bottom of said dosing compartment (at the mouth of the dosing compartment).
  • a first solution to increase the dosing volume without creating an undercut is to increase the height of the dosing cylinder, which means increasing the global height of the dosing cap.
  • this solution has a major disadvantage: the containers will require more space on the shelves, and the shelf cost per unit will be increased, which has a direct influence on the selling price of the product, thus being clearly undesirable to the consumer.
  • the dosing volume by increasing the length of the dosing portion which is hanging into the bottle.
  • the mouth of the dosing cylinder is constantly hanging into the product: so, when the consumer opens the bottle, the dosing portion of the cap is always dripping with product, which makes the whole package look messy, and is thus particularly undesirable.
  • a second solution known from the prior art consists in molding the cap into two separate parts which are then assembled.
  • the first part comprises the base portion of the turret together with the skirt and its attaching means.
  • the other part which is molded separately comprises the top portion of the dosing cylinder with its top wall.
  • the top portion of the dosing cylinder can be designed with a greater diameter than the base portion, as long as it does not itself comprise an undercut.
  • both parts are assembled, and the final dosing cap comprises an undercut which could not have been molded in a single step injection molding process.
  • making the cap into two separate parts and then assembling them is a very expensive solution to the problem of molding a cap that comprises an undercut. Indeed, this requires double tooling and machinery, double space in the plant for these machines and optionally for storing the parts, supplemental assembling machinery, and more time to produce a finished dosing cap.
  • a third solution consists in molding the cap in a one step injection molding process, by using a collapsible core which molds all the inner surfaces of the dosing cylinder, i.e. both the bottom portion, and also the top portion which has a greater internal diameter. At the end of the injection molding cycle, the core retracts, so that its undercut portion can be ejected through the bottom part of the dosing cylinder which has a restricted diameter.
  • a major disadvantage in molding a dosing cap with undercut using collapsible cores is that these collapsible cores are very fragile, they are worn out very easily, and thus, they must be changed frequently. Of course, this dramatically increases the production costs since such collapsible cores are expensive, and also because the production must be stopped each time the core needs to be changed, and the cycle times are longer.
  • the present invention is directed to a one-piece dosing cap comprising a top wall, side walls defining the top portion of a dosing compartment, and an attaching skirt extending from the base of the side walls, said skirt comprising substantially vertical walls and a stopping portion, characterized in that said dosing cap comprises at least one undercut portion.
  • the one-piece dosing cap of the present invention is manufactured by a one-step injection molding process.
  • said cap comprises attachment means for securing, more preferably releasably securing said cap onto the neck of a container. More preferably, said attachment means are achieved by screw threads, which match cooperating screw threads of the container.
  • FIG. 1 is a profile cut view showing a dosing cap according to the prior art, wherein the height has been increased in order to increase the dosing volume without having an undercut.
  • FIG. 2A is a profile cut view of the cap according to the present invention, showing the cap in open position, as positioned in the mold during the injection molding process.
  • FIG. 2B is a profile cut view of the cap according to the present invention, showing the cap in closed position, as positioned in the mold at the end of the injection molding process, after both parts have been sealed to finish the cap.
  • FIG. 2C is a profile cut view of the cap according to the present invention, showing the cap in closed position, and secured onto the neck of a container.
  • FIG. 2D is a profile view showing the outside of a dosing cap according to the present invention.
  • the dosing cap ( 1 ) according to the present invention comprises a top wall ( 13 ) and side walls ( 20 ) defining the top portion ( 15 ) of a dosing compartment ( 10 ).
  • the dosing cap ( 1 ) further comprises an attaching skirt ( 11 ) with attachment means ( 12 ) which extends downwardly from the base of the side walls ( 20 ), as shown for example in FIG. 2B.
  • the skirt ( 11 ) comprises substantially vertical walls with attachment means ( 12 ).
  • said attaching skirt ( 11 ) comprises a stopping portion ( 21 ) extending inwardly to the inside of the cap, thus partially closing the top portion ( 15 ) of the dosing compartment ( 10 ).
  • This stopping portion ( 21 ) is substantially horizontal, is rigid, and has such a surface that it creates at least one undercut portion ( 21 ) together with the top portion ( 15 ) of the dosing compartment ( 10 ).
  • the role of such a stopping portion ( 21 ) is to stop the cap in the right position when closing the neck of a corresponding container, by contacting the top edge of the neck of said container, as shown for example in FIG. 2C. This is especially important when the cap is deep and must be attached to a short neck.
  • the attaching skirt ( 11 ) extends outwardly all around the periphery of the bottom portion ( 14 ) of the dosing cylinder, as shown in FIGS. 2B and 2C.
  • Said skirt ( 11 ) comprises attachment means ( 12 ) for the cap to be secured onto the neck of a container, which are preferably located on the internal surface of the skirt ( 11 ) walls, such that once secured onto the container, the skirt ( 11 ) surrounds the neck of said container.
  • the attachment means ( 12 ) can alternatively be placed onto the external surface of the skirt ( 11 ), such that the dosing cap ( 1 ) can be secured onto the neck of a container having internal cooperating attachment means ( 12 ).
  • the attachment means ( 12 ) are achieved by one or more screw threads ( 12 ).
  • the attachment means ( 12 ) are achieved by ribs and/or grooves which, together with cooperating ribs and/or grooves of the container neck, constitute clipping or bayonet attachment means ( 12 ).
  • the dosing cap ( 1 ) can have any suitable shape, but in the following description, only the preferred embodiment where the cap is cylindrical—or slightly conical—will be described.
  • said dosing compartment ( 10 ) comprises a bottom portion ( 14 ) in addition to the top portion ( 15 ). Said bottom portion extends downwardly from the inner edges of the stopping portion ( 21 ) as shown in FIG. 2B. Said bottom portion ( 14 ) is open at its base so as to form a pouring spout ( 16 ). Top and bottom portions of the dosing compartment are molded as one single unitary piece, and linked by a linking portion, for example a hinge portion ( 18 ), as shown in FIGS. 2A to 2 C, so that the whole cap is made out of one single piece.
  • a linking portion for example a hinge portion ( 18 )
  • the materials suitable for making a dosing cap ( 1 ) according to the present invention include, but are not limited to thermoplastic resins, for example polyethylene or polypropylene, or elastomeric materials such as for example synthetic rubber.
  • the dosing cap ( 1 ) can be made out of several different plastic materials, or the same plastic material into which different additives are incorporated, for example different colours.
  • Dosing caps according to the present invention are typically to be used for dosing of cleaning or detergent compositions for home care or fabric care products, including but not limited to soaps, laundry detergents, colour care products, dye care products, bleach or hypochlorite additives . . . etc.
  • These products can have any form, as long as they are flowable enough to be dosed by using a dosing cap ( 1 ).
  • they can be liquids, flakes, powders, granules, gels or a mixture thereof.
  • the dosing cap ( 1 ) comprises a means for indicating to the consumer what is the amount of product to pour into the dosing cap ( 1 ), in order to make a complete dose. For example, this can be achieved by putting a mark (rib or groove) on the internal surface of the dosing compartment.
  • a dosing cap according to the present invention is made out of thermoplastic resin, or a thermoplastic elastomer. Such caps are manufactured by using an injection molding process. Such processes are well know in the art, and will not be described further in this description for clarity purposes.
  • the dosing cap of the present invention is made out of one piece, and requires only one mold cavity for its manufacture.
  • the injection molded process can be a mono, multi, or co-injection molding process, depending on the number of different materials that are chosen to make the cap.
  • the cap is molded in open position, as shown in FIG. 2A, such that none of the molded parts contains an undercut. This will prevent the need for using collapsible cores which are usually worn out easily and thus quite expensive to use for large production series.
  • the mold opens and the cap is partially ejected.
  • the cap ( 1 ) is preferably closed in the mold by pivoting the top ( 14 ) and bottom ( 15 ) portions of the dosing compartment ( 10 ) around the hinge portion ( 18 ).
  • Techniques for folding or closing pieces in an injection mold are well known in the art.
  • the cap can be ejected from the injection mold in the open position, and be closed and sealed later on the production line.
  • the bottom ( 14 ) and top ( 15 ) portions of the dosing compartment ( 10 ) are locked together, so as to finish the cap ( 1 ).
  • Any suitable technique for securing said top ( 14 ) and bottom ( 15 ) portions of the dosing compartment ( 10 ) can be used, as long as the cap thus formed is leaktight. This technique include, but are not limited to mechanical bounding, heat sealing, ultrasonic sealing, spin-welding, gluing with or without using an additive . . . etc.
  • a cap according to the present invention is that said cap is made out of one single piece, whatever the complexity of its shape, and whatever the size of the undercut created by the stopping portion ( 21 ) of the skirt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Closures For Containers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
US09/756,391 2000-01-07 2001-01-08 One-piece dosing cap Abandoned US20010030165A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP00870003A EP1114780B2 (de) 2000-01-07 2000-01-07 Einteiliger Dosierverschluss
EP00870003.1 2000-01-07

Publications (1)

Publication Number Publication Date
US20010030165A1 true US20010030165A1 (en) 2001-10-18

Family

ID=8175694

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/756,391 Abandoned US20010030165A1 (en) 2000-01-07 2001-01-08 One-piece dosing cap

Country Status (6)

Country Link
US (1) US20010030165A1 (de)
EP (1) EP1114780B2 (de)
JP (1) JP2001233372A (de)
AT (1) ATE292062T1 (de)
DE (1) DE60019076T3 (de)
ES (1) ES2235825T5 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050067366A1 (en) * 2002-01-11 2005-03-31 Dubach Werner Fritz Plastic closure which can be produced in a closed manner, injection mould and method for the production thereof
EP2128038A1 (de) 2008-05-26 2009-12-02 The Procter and Gamble Company Behälterkappe mit mehreren Abteilen
US20100294739A1 (en) * 2009-05-20 2010-11-25 Morris Iii Samuel James Multi Compartment Container Cap
US20130146070A1 (en) * 2011-12-09 2013-06-13 Edmund Ross Smoking Device
US20140319095A1 (en) * 2011-10-04 2014-10-30 Church & Dwight Co., Inc. Dispensing/measuring cap/cup
US8925768B1 (en) 2013-08-12 2015-01-06 Muhammad Sami Ismail Dispenser and measuring cap device and method
JP2016506311A (ja) * 2012-11-27 2016-03-03 ザ プロクター アンド ギャンブルカンパニー 製品
US9296601B2 (en) 2013-08-12 2016-03-29 Capsforall Llc Dispenser and measuring cap device and method
US9539754B2 (en) 2012-11-27 2017-01-10 The Procter & Gamble Company Method of manufacturing an injected and blown product

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4617809B2 (ja) * 2004-09-29 2011-01-26 凸版印刷株式会社 ヒンジ蓋付計量キャップ
ES2610035B1 (es) * 2015-10-22 2018-01-30 Menshen Iber, S.L. Tapón dosificador de una sola pieza y procedimiento de inyección de dicho tapón dosificador
US11053054B2 (en) * 2018-08-03 2021-07-06 Gateway Plastics, Inc. Spout fitment and cap
DE102019215330A1 (de) * 2019-10-07 2021-04-08 Henkel Ag & Co. Kgaa Verfahren zur Herstellung von einem Dosierverschluss
CN111300771B (zh) * 2020-03-20 2021-12-07 广东博智林机器人有限公司 模具及顶出机构

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US4566508A (en) * 1984-12-17 1986-01-28 Ethyl Molded Products Company Self-draining closure
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050067366A1 (en) * 2002-01-11 2005-03-31 Dubach Werner Fritz Plastic closure which can be produced in a closed manner, injection mould and method for the production thereof
EP2128038A1 (de) 2008-05-26 2009-12-02 The Procter and Gamble Company Behälterkappe mit mehreren Abteilen
US20100294739A1 (en) * 2009-05-20 2010-11-25 Morris Iii Samuel James Multi Compartment Container Cap
US20140319095A1 (en) * 2011-10-04 2014-10-30 Church & Dwight Co., Inc. Dispensing/measuring cap/cup
US9821932B2 (en) * 2011-10-04 2017-11-21 Church & Dwight Co., Inc. Dispensing/measuring cap/cup
US20130146070A1 (en) * 2011-12-09 2013-06-13 Edmund Ross Smoking Device
JP2016506311A (ja) * 2012-11-27 2016-03-03 ザ プロクター アンド ギャンブルカンパニー 製品
US9539754B2 (en) 2012-11-27 2017-01-10 The Procter & Gamble Company Method of manufacturing an injected and blown product
US8925768B1 (en) 2013-08-12 2015-01-06 Muhammad Sami Ismail Dispenser and measuring cap device and method
WO2015023317A1 (en) 2013-08-12 2015-02-19 Ismail Muhammad Sami Dispenser and measuring cap device and method
US9296601B2 (en) 2013-08-12 2016-03-29 Capsforall Llc Dispenser and measuring cap device and method

Also Published As

Publication number Publication date
JP2001233372A (ja) 2001-08-28
ES2235825T5 (es) 2008-12-16
DE60019076T2 (de) 2006-02-02
ES2235825T3 (es) 2005-07-16
EP1114780B1 (de) 2005-03-30
EP1114780A1 (de) 2001-07-11
EP1114780B2 (de) 2008-09-03
DE60019076D1 (de) 2005-05-04
DE60019076T3 (de) 2009-06-18
ATE292062T1 (de) 2005-04-15

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