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Pill package

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Publication number
US3899080A
US3899080A US33048273A US3899080A US 3899080 A US3899080 A US 3899080A US 33048273 A US33048273 A US 33048273A US 3899080 A US3899080 A US 3899080A
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US
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Grant
Patent type
Prior art keywords
layer
package
rupturable
protective
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.)
Expired - Lifetime
Application number
Inventor
Michael J Brunda
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Standard Packaging Corp
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Standard Packaging 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
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/32Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B65D75/325Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents one sheet being recessed, and the other being a flat not- rigid sheet, e.g. puncturable or peelable foil
    • B65D75/327Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents one sheet being recessed, and the other being a flat not- rigid sheet, e.g. puncturable or peelable foil and forming several compartments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2215/00Child-proof means
    • B65D2215/04Child-proof means requiring the combination of different actions in succession
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2575/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D2575/28Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associationg or interconnecting two or more sheets or blankes
    • B65D2575/30Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D2575/32Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B65D2575/3209Details
    • B65D2575/3218Details with special means for gaining access to the contents
    • B65D2575/3245Details with special means for gaining access to the contents by peeling off the non-rigid sheet
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2585/00Containers, packaging elements or packages specially adapted for particular articles or materials
    • B65D2585/56Containers, packaging elements or packages specially adapted for particular articles or materials for medicinal tablets or pills
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S206/00Special receptacle or package
    • Y10S206/82Separable, striplike plural articles

Abstract

A package construction which is particularly suitable for pills and tablets is formed from a flexible plastic container having a recess which holds the product and a composite lid which forms an air-tight package. The lid includes a rupturable layer, and a protective layer which is joined to the rupturable layer by a peelable adhesive. Access to the package contents is achieved by stripping the protective layer followed by pushing the product through the rupturable layer.

Description

United States Patent Brunda Aug. 12, 1975 [54] PILL PACKAGE 3,207,299 9/1965 Sparks 206/42 3,503,493 3/1970 Nagy 206/42 [75] Inventor: Mlchae' Chm, 3,809,221 5/1974 Compere 206/498 [73] Assignee: Standard Packaging Corporation,

Ne k, N Y Primary ExaminerWilliam T. Dixson, Jr. Filed: Feb. 1973 Attorney, Agent, or Firm-Amster & Rothstein [211 Appl. No.: 330,482 [57 ABSTRACT A package construction which is particularly suitable [52] US. Cl. 206/531; 206/461; 206/498; o p s and tablets is formed from a flexible plastic 206/820 container having a recess which holds the product and [51] Int. Cl. .......................865D 75/42; B65D 75/46; a composite lid which forms an air-tight package. The B65D 83/04 lid includes a rupturable layer, and a protective layer [58] Field of Search 206/42, 498, 461, 484, which s jo ed to the rupturable layer by a peelable 206/820; 229/51 D adhesive. Access to the package contents is achieved by stripping the protective layer followed by pushing [56] References Cited the product through the rupturable layer.

UNITED STATES PATENTS Brooks 229/51 D 5 Claims, 2 Drawing Figures PILL PACKAGE This invention relates to a novel packaging system for solid materials in pill or tablet form. More particularly, the present invention relates to a novel package designed to securely hold pharmaceutical pills or other potentially dangerous products so as to reduce the pos sibility of obtaining accidental access to the contents of such a package.

Many commercially available packages for medicinal tablets and pills are formed from a flexible plastic container which houses the pill and a rupturable lid. In such arrangements, individual pills are removed from the package by pushing the pill through the rupturable layer by applying pressure to the flexible plastic container. Such an arrangement requires that the rupturable layer be fairly weak and brittle so that it may be easily ruptured when access to the package contents is desired. While such a packaging arrangement offers a substantial convenience to the consumer, the'ease with which the package may be ruptured presents asubstantial danger of accidental access to the package contents. Thus, a child gaining access to such a package could, quite easily, in the course of playing with the package, cause the lid to rupture and obtain access to a potentially dangerous drug.

Accordingly, it is an object of the present invention to provide a novel package construction which is not readily subject to accidental opening, particularly by children.

Yet another object of the invention is to provide a novel pill package which has a simple construction, is relatively inexpensive and permits the user to gain access to its contents in a simple fashion.

The above and other objects of the invention are achieved by a novel pill package which, in addition to the semi-rigid or flexible container and rupturable layer which have characterized prior art pill packages also includes a film layer adhesively joined to and in intimate contact with the rupturable layer. By employing a non-rupturable film layer and an adhesive which will permit stripping of that layer without rupture of the underlying rupturable layer, two steps in proper sequence are required in order to obtain access to the package contents. Thus, even if a child gains access to the package of the invention, the package cannot be accidentally ruptured and a deliberate peeling step followed by a rupture step will be required in order to obtain access to the package contents.

The invention will be further understood by reference to the drawings wherein:

FIG. 1 is a cross section of an individual package for containing a pill in accordance with the structure of the invention.

FIG. 2 is a perspective view of a package designed to contain multiple tablets which also illustrates the manner in which a single tablet is removed from the package.

Referring to FIG. 1, there is illustrated a package for containing a single pill 16 which consists of a flexible plastic layer 12 having a depression or recess 14 which houses pill 16 and a composite lid 18 which forms an air-tight closure over the depression.

The flexible plastic layer 12 may be selected from a wide variety of semi-rigid or fully flexible materials and a variety of techniques which are well known in the art may be employed to form the recess in that layer. For

example, the recess may be formed by a molding technique involving the application of heat and/or pressure to a plastic material such as polystyrene, polyethylene, polypropylene, polyvinyl chloride or a similar plastic material. The size and shape of the recess or cavity and the selection of a particular material is a matter of choice which will be dictated by the size and nature of the pill, as well as other considerations which are well known to those persons skilled in the art. The thickness of the plastic material used to form the recess is also not critical. The minimum thickness will be selected such that the recess will not be subject to accidental rupture. Suitable thickness will be in the range of 1 mil to 30 mils, preferably 5 to 15 mils, e.g. 10 mils.

The composite lid 18, which forms an airtight closure with the pill container, comprises at least three and possibly four distinct layers which together reduce the possibility of accidentally obtaining access to the package contents. The three essential layers include a rupturable layer 20 which overlies and is in intimate contact with the peripheral shoulders 22 of product container 12; a peelable adhesive layer 24 which overlies and is in intimate contact with the rupturable layer 20; and a strippable film layer 26 overlying and in intimate contact with adhesive layer 24.

In a preferred embodiment, the rupturable layer is formed from a frangible material such as paper, selected plastics or metal foil. Since such materials are not readily heat sealable to the plastic container layer 12 to form an air-tight sealed package, it is necessary, with such materials, to provide a coating layer 28 of a heat sealable material on the surface of the rupturable layer which faces the plastic container. Such coatings are well known in the art and may be selected from such materials as vinyls, acrylics or polyolefins which are applied by spraying, dipping or similar techniques. In lieu of a rupturable metal foil, other rupturable materials such as cellophane, polyethylene, polypropylene and the like may be employed and in those instances where a heat sealable rupturable material is utilized, the heat seal coating 28 may be omitted. The thickness of the rupturable layer is not critical, and ordinarily will be maintained within a range which provides adequate protection for the package contents while still being capable of rupture without the application of undue force.

The nature of the added protective layer 26 is not critical and a wide variety of plastic or other materials may be employed. Among the materials which may be used are polyester, polyolefin, polyamide, polycarbonate and polysulfone films, or combinations thereof. Non-plastic protective layers such as paper or cardboard may also be employed and such materials offer the additional advantage of providing a suitable surface for printing instructions with respect to the use of the contents of the package. It will readily occur to those persons skilled in the art that a paper or carboard layer may be combined, if desired, with an underlying plastic film protective layer in order to provide a suitable printing surface. The thickness of the protective layer is not critical, although it should have sufficient thickness to avoid accidental rupture. Such thickness will vary with the selection of a particular material and can readily be determined by those persons skilled in the art. Typically, the protective layer may have a thicknessin the range of 0.5 to 4 mils, preferably 0.5 to 1.5 mils, e.g., 0.75 mils.

The nature of the adhesive layer 24 which joins protective layer 26 to rupturable layer is an important feature of the invention. While the exact nature of the adhesive employed will depend upon the materials used in forming the rupturable layer and the protective layer, the adhesive, in all cases, must be of such a nature that it permits the protective layer to be peeled away without causing rupture of the underlying rupturable layer. Accordingly, the adhesive employed must either have high adherence to the protective layer and relatively low adherence to the rupturable layer, or vice versa. Typical adhesives which exhibit this quality include rubber, vinyl, and acrylic cements. In a preferred embodiment where a metallic foil is employed as the rupturable layer and a polyester is employed as a protective layer, an adhesive comprising rubber or acrylic cement is suitable.

FIG. 2 illustrates a package structure including multiple recesses for housing multiple pills, or tablets and also illustrates the manner in which an individual pill may be dispensed. In this arrangement, a package 30 having multiple pill recesses 32 and 33 is formed from a single semi-rigid plastic layer 34 by conventional vacuum or thermo-forming techniques as previously described and a lid 36 of suitable size to cover all of the pill recesses is heat sealed over the entire container layer to form an air-tight package. By providing perforations or areas of weakness 38 completely surrounding each individual recess 32 in the multiple container structure the capability of removing a single pill at a time from the package is provided. Specifically, the perforations 38 serve to limit the amount of protective layer 40 which can be removed in a single stripping operation such that only the protective layer covering a single pill can be removed in a single stripping step. For example, as illustrated, if it is desired to remove a single pill 42 from recess 32, the stripping of protective layer 40 will be limited to the area defined by perforations 38a and 38b. Thereafter, only the portion of the rupturable layer 44 immediately above recess 32 will be ruptured by the application of pressure from the finger of the consumer on recess 32. By this technique, a series of individual pill containers substantially identical to that described in connection with FIG. 1 are created from larger integral layers of materials.

It will be readily understood by those persons skilled in the art that the package structure described herein may be used to package a wide variety of materials and is not limited to the packaging of any particular type of material. However, the package is particularly suited for housing dangerous drugs or other hazardous materials since the system requires two deliberate steps, in particular sequence, in order to achieve access to the package contents, thereby substantially reducing the possibility of accidental opening.

Having thus described the general nature as well as specific embodiments of the invention, the true scope will now be pointed out in the appended claims.

What is claimed is:

1. A package comprising a product container including at least one recess for housing a product and a composite lid, said lid comprising an inner rupturable layer, an outer, non-rupturable protective layer and an intermediate adhesive layer joining said protective and rupturable layers, said protective layer being removable from said composite lid without causing the rupture of said rupturable layer, said lid being heat sealed to said container to form an air-tight compartment for said product.

2. The package of claim 1 wherein said rupturable layer is a metal foil.

3. The package of claim 2 wherein the surface of said metal foil layer which is joined to said container is coated with a heat sealable material.

4. The package of claim 1 which includes multiple recesses in said product container.

5. The package of claim 4 wherein the protective layer of said lid is divided into sections, each section covering an area approximately equal to the area defined by a recess in said product container whereby that portion of the protective layer covering a single recess may be removed without causing the removal of an adjacent portion of said protective layer.

Claims (5)

1. A package comprising a product container including at least one recess for housing a product and a composite lid, said lid comprising an inner rupturable layer, an outer, non-rupturable protective layer and an intermediate adhesive layer joining said protective and rupturable layers, said protective layer being removable from said composite lid without causing the rupture of said rupturable layer, said lid being heat sealed to said container to form an air-tight compartment for said product.
2. The package of claim 1 wherein said rupturable layer is a metal foil.
3. The package of claim 2 wherein the surface of said metal foil layer which is joined to said container is coated with a heat sealable material.
4. The package of claim 1 which includes multiple recesses in said product container.
5. The package of claim 4 wherein the protective layer of said lid is divided into sections, each section covering an area approximately equal to the area defined by a recess in said product container whereby that portion of the protective layer covering a single recess may be removed without causing the removal of an adjacent portion of said protective layer.
US3899080A 1973-02-08 1973-02-08 Pill package Expired - Lifetime US3899080A (en)

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US3899080A US3899080A (en) 1973-02-08 1973-02-08 Pill package
JP11672873A JPS49105695A (en) 1973-02-08 1973-10-15

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Cited By (51)

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US4158411A (en) * 1976-05-10 1979-06-19 Hall Douglas C Dispensing package
US4189053A (en) * 1979-01-25 1980-02-19 Hoffmann-La Roche Inc. Bulk unit of use informational medicinal dispensing system
US4190153A (en) * 1978-10-23 1980-02-26 California Medical Developments, Inc. Sponge disposal tray
US4316541A (en) * 1980-03-31 1982-02-23 Medi-Dose, Inc. Moisture impervious cover sheet for unit dose packaging
US4537312A (en) * 1983-05-19 1985-08-27 Intini Thomas D Child-resistant tamper-evident package
US4563836A (en) * 1981-04-06 1986-01-14 American Cyanamid Co. Insect feeding station
WO1988008679A1 (en) * 1987-05-13 1988-11-17 Christie Sharon K Product sampling dispenser
GB2218072A (en) * 1988-03-15 1989-11-08 Noxell Corp Bilster packages
US4916921A (en) * 1987-09-10 1990-04-17 Fletcher Charles J Ice maker with vertical cooling member
GB2246555A (en) * 1990-07-19 1992-02-05 Christopher George Packaging for medicine
US5088603A (en) * 1987-04-21 1992-02-18 Sharp Packaging Tear-opening caplet blister foil package
US5242055A (en) * 1992-11-27 1993-09-07 Udl Laboratories, Inc. Packaging system for medication
US5310060A (en) * 1992-10-13 1994-05-10 G. D. Searle & Co. Tamper-evident, child-resistant blister packages for medicaments and non-medicaments
US5380110A (en) * 1993-01-21 1995-01-10 Festa; Joseph F. Packet containing treatment liquid with applicator and method
US5469968A (en) * 1994-09-22 1995-11-28 Reynolds Metals Company Peel-peel-push childproof packaging structure
US5486390A (en) * 1994-04-25 1996-01-23 Mobil Oil Corporation Recyclable blister package
US5830170A (en) * 1996-03-26 1998-11-03 Whiteman; Phillip L. Multiple-use blood-blotting device
US5932338A (en) * 1992-10-28 1999-08-03 Bp Chemicals Plastec Gmbh Film for tamper-proof coverings for product carriers
US5941433A (en) * 1997-12-12 1999-08-24 Wilcher; Lisa Lynn Medication attachment device and method
US5961043A (en) * 1998-06-26 1999-10-05 S. C. Johnson & Son, Inc. Supporting device for dispensing volatile material
US5975427A (en) * 1995-12-19 1999-11-02 S. C. Johnson & Son, Inc. Device for dispensing volatile material
EP0959020A1 (en) * 1998-05-20 1999-11-24 Alusuisse Technology & Management AG Packaging enabling manipulation security
US6006913A (en) * 1996-04-09 1999-12-28 Bp Chemicals Plastec Gmbh Packaging
WO2000064780A2 (en) * 1999-04-27 2000-11-02 David J. Instance Ltd. Labels and labelled packages
US6161699A (en) * 1999-10-29 2000-12-19 Proclinical, Inc. Child-resistant blister package
CN1072165C (en) * 1995-10-31 2001-10-03 麦克尼尔-Ppc公司 Soaking type medicinal pill package with safety pad
US6315482B1 (en) 1998-11-04 2001-11-13 The Procter & Gamble Company Applicator for applying and distributing substances to target surfaces
US6322271B1 (en) 1998-11-04 2001-11-27 The Procter & Gamble Company Applicator for applying and distributing substances to target surfaces
US6325565B1 (en) 1998-06-30 2001-12-04 The Procter & Gamble Company Anti-perspirant/deodorant applicator
US6349828B1 (en) * 1997-02-06 2002-02-26 Ferris Pharmaceuticals Inc. Tamper evident packaging
US6516949B2 (en) 1995-10-31 2003-02-11 Mcneil-Ppc, Inc. Blister pill package with safety backing
US6598745B2 (en) * 2000-10-18 2003-07-29 Sticky Business, Llc Child resistant senior friendly medicament label
US20030209460A1 (en) * 2000-10-18 2003-11-13 Bolnick Martin M. Child resistant senior friendly medicament label
US6758338B2 (en) 2001-03-29 2004-07-06 Kj Innovations, Llc. Accessable medicinal dosage carrier
US20050087474A1 (en) * 2003-05-20 2005-04-28 Killinger Fred M. Child resistant blister packages utilizing walled structures enclosing medicament therein
US20050139505A1 (en) * 2003-12-15 2005-06-30 Miller Mark R. Child-resistant blister package
US20060134388A1 (en) * 2004-12-22 2006-06-22 Miller Mark R Heavy calendered multiple component sheets and multi-layer laminates and packages therefrom
US20060289328A1 (en) * 2005-06-27 2006-12-28 Christopher Hession Child-Resistant Blister Package
US20070045147A1 (en) * 2005-11-15 2007-03-01 Nosco, Inc. Product Packaging System with Lock Release
US20070284280A1 (en) * 2006-06-12 2007-12-13 Patrick Henry Young Child-resistant blister package
US20070289893A1 (en) * 2004-08-20 2007-12-20 Perrigo Company Child-Resistant Medicament Package
US20080060968A1 (en) * 2006-09-12 2008-03-13 Gordon Levy Drug card
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US3503493A (en) * 1968-01-08 1970-03-31 Hoffmann La Roche Medicament packaging device
US3809221A (en) * 1972-10-10 1974-05-07 N Compere Rupturable blister pill package with safety backing

Cited By (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158411A (en) * 1976-05-10 1979-06-19 Hall Douglas C Dispensing package
US4190153A (en) * 1978-10-23 1980-02-26 California Medical Developments, Inc. Sponge disposal tray
US4189053A (en) * 1979-01-25 1980-02-19 Hoffmann-La Roche Inc. Bulk unit of use informational medicinal dispensing system
US4316541A (en) * 1980-03-31 1982-02-23 Medi-Dose, Inc. Moisture impervious cover sheet for unit dose packaging
US4563836A (en) * 1981-04-06 1986-01-14 American Cyanamid Co. Insect feeding station
US4537312A (en) * 1983-05-19 1985-08-27 Intini Thomas D Child-resistant tamper-evident package
EP0162378A2 (en) * 1984-05-23 1985-11-27 Thomas D. Intini Child-resistant tamper-evident package
EP0162378A3 (en) * 1984-05-23 1988-03-02 Thomas D. Intini Child-resistant tamper-evident package
US5088603A (en) * 1987-04-21 1992-02-18 Sharp Packaging Tear-opening caplet blister foil package
WO1988008679A1 (en) * 1987-05-13 1988-11-17 Christie Sharon K Product sampling dispenser
US4916921A (en) * 1987-09-10 1990-04-17 Fletcher Charles J Ice maker with vertical cooling member
GB2218072A (en) * 1988-03-15 1989-11-08 Noxell Corp Bilster packages
GB2218072B (en) * 1988-03-15 1992-11-04 Noxell Corp Blister packaging
GB2246555A (en) * 1990-07-19 1992-02-05 Christopher George Packaging for medicine
US5310060A (en) * 1992-10-13 1994-05-10 G. D. Searle & Co. Tamper-evident, child-resistant blister packages for medicaments and non-medicaments
US5932338A (en) * 1992-10-28 1999-08-03 Bp Chemicals Plastec Gmbh Film for tamper-proof coverings for product carriers
USRE35445E (en) * 1992-11-27 1997-02-11 Udl Laboratories, Inc. Packaging system for medication
US5242055A (en) * 1992-11-27 1993-09-07 Udl Laboratories, Inc. Packaging system for medication
US5380110A (en) * 1993-01-21 1995-01-10 Festa; Joseph F. Packet containing treatment liquid with applicator and method
US5486390A (en) * 1994-04-25 1996-01-23 Mobil Oil Corporation Recyclable blister package
US5469968A (en) * 1994-09-22 1995-11-28 Reynolds Metals Company Peel-peel-push childproof packaging structure
CN1072165C (en) * 1995-10-31 2001-10-03 麦克尼尔-Ppc公司 Soaking type medicinal pill package with safety pad
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