US3381884A - Packages - Google Patents
Packages Download PDFInfo
- Publication number
- US3381884A US3381884A US542556A US54255666A US3381884A US 3381884 A US3381884 A US 3381884A US 542556 A US542556 A US 542556A US 54255666 A US54255666 A US 54255666A US 3381884 A US3381884 A US 3381884A
- Authority
- US
- United States
- Prior art keywords
- package
- lap
- sheet
- thermoplastic
- closure
- 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
Links
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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
- 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
- B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
- B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
- B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
-
- 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
- B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
- B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
-
- 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 packages, and in particular to a new kind of package that can be readily opened when required.
- thermoplastic sheets especially biaxially orientated resin sheets
- Thermoplastic sheets are becoming increasingly used in such applications as packaging, where their properties have facilitated the introduction of mass production techniques.
- Packages made from thermoplastic sheets are in many cases strong, light and durable; however, in some instances their strength can be a disadvantage, since it makes the package difficult to open.
- a novel type of package which can readily be opened when required has now been developed.
- the invention comprises a package having a closure made from a sheet of thermoplastic material of which a portion is folded back upon itself twice so as to form a lap defining a line of weakness along which the sheet can be torn so as to open the package when required.
- FIG. I is a sectional side View of a tray covered by sheet material having a folded overlap.
- FIG. II is a top plan view of the tray shown in FIG. I.
- FIG. III illustrates a package completely enclosed with sheet material having a folded overlap.
- FIG. IV illustrates the use of the present invention in a sachet.
- a package which comprises a tray 1, which may be a vacuum formed from a plastic such as polystyrene, having heat-sealed to it a transparent lid 2 comprising a sheet material such as biaxially orientated polystyrene, folded in two places 4 and 5 to form a lap 3.
- the lap is held down at its ends 6 and 7 by the seal in such a manner that a finger can easily be inserted under it near the middle so as to tear the lid away from the tray.
- FIGS. III and IV Two further examples are shown in FIGS. III and IV.
- FIG. III shows in perspective a film-wrapped container such as is used for biscuits, etc., which is provided with a lap on all four sides
- FIG. IV shows a sachet of the type which is often used to contain shampoo, having a lap across one corner.
- the above description and particularly the draw- "ice ings are set forth for the purpose of illustration only and not for the purpose of limitation.
- the invention has been described with reference to a package, which can be empty or already filled with the substance to be packed, but the invention also includes a part or component (of a package) comprising a sheet of thermoplastic material of which a portion is folded back upon itself twice so as to form a lap.
- a part or component of a package
- the lap might be part of a lid which is sealed to a container after the latter has been filled.
- thermoplastic sheet from which the closure is made is a synthetic resin sheet, particularly a transparent sheet of biaxially orientated resin.
- suitable resins are polyolefins such as polyethylene, or polypropylene; styrene copolymers, for instance styreneacrylonitrile copolymers; polyacrylates, polymethacrylates, polycarbonates; polyvinyl chloride; and polyethylene terephthalate.
- Thermoplastic cellulose derivatives such as for example cellulose acetate or cellulose triacetate can be employed if desired.
- thermoplastic sheet is normally relatively thin, for instance having a thickness of between 0.0002 and 0.010 inch, particularly between 0.0005 inch and 0.004 inch. A sheet of thickness 0.001 is often convenient to use.
- the folded lap in the closure can be produced by any suitable means. For instance, blanks can be cut and then folded separately, or the lap can be produced mechanically in a roll of the material using web fed equipment either by intermittent folding and creasing across the web, or by continuous folding and creasing by passing through rollers.
- the seal can be effected in a variety of ways, for instance by heat-sealing, impulse-sealing or ultrasonic sealing; or by the use of a solvent or an adhesive. Particularly suitable methods are those described in British patent specifications Nos. 922,388, 14,577/62 and 18,560/ 63. A counter-part of the latter British patent specification was filed in the United States Patent Ofiice on Apr. 20, 1964, and was given Ser. No. 361,262.
- the present invention serves to extend the use of thermoplastic sheets to many packaging applications where strength and easy opening of the package are important.
- a package comprising a container and a closure for the container made from a sheet of thermoplastic material of which a portion is folded back on itself twice to form a lap, said lap being sealed at its edges to the container so that a finger may be inserted under the lap to initially tear the closure away from the container along the sealed edges of the closure, the surfaces of the folds of the lap within the sealed edges being substantially free of attachment to each other, said lap within its sealed edges extending substantially in the plane of the remainder of the sheet material.
- thermoplastic material is a transparent sheet of biaxially oriented polystyrene.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closing Of Containers (AREA)
- Packages (AREA)
Description
y 7, 1968 M. J. HERRITTY 3,381,884
PACKAGES Filed April 14, 1966 3/4 FIG. I x
M/CHAEJL JI'HEEE/TTY INVENTOR BY 92m wi TTO/ENEY United States Patent C) 3,331,884 PACKAGES Michael John Herritty, Haywards Heath, near Lindfield, England, assignor t Monsanto Chemicals Limited, London, England, a British company Filed Apr. 14, 1966, Ser. No. 542,556 Claims priority, application Great Britain, June 16, 1965, 25,421/65 2 Claims. (Cl. 229-51) ABSTRACT OF THE DISCLOSURE A package having a closure of sheet thermoplastic which is folded back on itself to form a line of weakness for easy opening.
This invention relates to packages, and in particular to a new kind of package that can be readily opened when required.
Thermoplastic sheets, especially biaxially orientated resin sheets, are becoming increasingly used in such applications as packaging, where their properties have facilitated the introduction of mass production techniques. Packages made from thermoplastic sheets are in many cases strong, light and durable; however, in some instances their strength can be a disadvantage, since it makes the package difficult to open. A novel type of package which can readily be opened when required has now been developed.
It is a principal object of the present invention to provide a package which can be readily opened.
It is another object of the present invention to provide a package made using thermoplastic sheet which can be readily opened.
It is a further object of the present invention to provide method and means to carry out the above objects.
This invention will in part be obvious and will in part appear hereinafter.
The invention comprises a package having a closure made from a sheet of thermoplastic material of which a portion is folded back upon itself twice so as to form a lap defining a line of weakness along which the sheet can be torn so as to open the package when required.
FIG. I is a sectional side View of a tray covered by sheet material having a folded overlap.
FIG. II is a top plan view of the tray shown in FIG. I.
FIG. III illustrates a package completely enclosed with sheet material having a folded overlap.
FIG. IV illustrates the use of the present invention in a sachet.
Referring to the drawings and more particularly to FIGS. I and II, a package which comprises a tray 1, which may be a vacuum formed from a plastic such as polystyrene, having heat-sealed to it a transparent lid 2 comprising a sheet material such as biaxially orientated polystyrene, folded in two places 4 and 5 to form a lap 3. The lap is held down at its ends 6 and 7 by the seal in such a manner that a finger can easily be inserted under it near the middle so as to tear the lid away from the tray.
The invention has been specifically illustrated With reference to a tray container having a sealed-on lid, but many other types of package can be provided with a closure in accordance with the invention. Two further examples are shown in FIGS. III and IV. FIG. III shows in perspective a film-wrapped container such as is used for biscuits, etc., which is provided with a lap on all four sides, while FIG. IV shows a sachet of the type which is often used to contain shampoo, having a lap across one corner. The above description and particularly the draw- "ice ings are set forth for the purpose of illustration only and not for the purpose of limitation.
Moreover, the invention has been described with reference to a package, which can be empty or already filled with the substance to be packed, but the invention also includes a part or component (of a package) comprising a sheet of thermoplastic material of which a portion is folded back upon itself twice so as to form a lap. Thus for example the lap might be part of a lid which is sealed to a container after the latter has been filled.
Preferably the thermoplastic sheet from which the closure is made is a synthetic resin sheet, particularly a transparent sheet of biaxially orientated resin. Other suitable resins are polyolefins such as polyethylene, or polypropylene; styrene copolymers, for instance styreneacrylonitrile copolymers; polyacrylates, polymethacrylates, polycarbonates; polyvinyl chloride; and polyethylene terephthalate. Thermoplastic cellulose derivatives such as for example cellulose acetate or cellulose triacetate can be employed if desired.
The thermoplastic sheet is normally relatively thin, for instance having a thickness of between 0.0002 and 0.010 inch, particularly between 0.0005 inch and 0.004 inch. A sheet of thickness 0.001 is often convenient to use.
The folded lap in the closure can be produced by any suitable means. For instance, blanks can be cut and then folded separately, or the lap can be produced mechanically in a roll of the material using web fed equipment either by intermittent folding and creasing across the web, or by continuous folding and creasing by passing through rollers.
Where the closure is sealed to another part of the container the seal can be effected in a variety of ways, for instance by heat-sealing, impulse-sealing or ultrasonic sealing; or by the use of a solvent or an adhesive. Particularly suitable methods are those described in British patent specifications Nos. 922,388, 14,577/62 and 18,560/ 63. A counter-part of the latter British patent specification was filed in the United States Patent Ofiice on Apr. 20, 1964, and was given Ser. No. 361,262.
The present invention serves to extend the use of thermoplastic sheets to many packaging applications where strength and easy opening of the package are important.
It is obvious that many variations may be made in the products and processes set forth above without departing from the scope of this invention.
What is claimed is:
1. A package comprising a container and a closure for the container made from a sheet of thermoplastic material of which a portion is folded back on itself twice to form a lap, said lap being sealed at its edges to the container so that a finger may be inserted under the lap to initially tear the closure away from the container along the sealed edges of the closure, the surfaces of the folds of the lap within the sealed edges being substantially free of attachment to each other, said lap within its sealed edges extending substantially in the plane of the remainder of the sheet material.
2. A package according to claim 1 in which the thermoplastic material is a transparent sheet of biaxially oriented polystyrene.
References Cited UNITED STATES PATENTS 3,166,234 1/1965 Amberg 22 9-S1 JOSEPH R. LECLAIR, Primary Examiner.
R. PESHOCK, Assistant Examiner.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB25421/65A GB1086841A (en) | 1965-06-16 | 1965-06-16 | Packages |
Publications (1)
Publication Number | Publication Date |
---|---|
US3381884A true US3381884A (en) | 1968-05-07 |
Family
ID=10227396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US542556A Expired - Lifetime US3381884A (en) | 1965-06-16 | 1966-04-14 | Packages |
Country Status (2)
Country | Link |
---|---|
US (1) | US3381884A (en) |
GB (1) | GB1086841A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3516631A (en) * | 1969-07-28 | 1970-06-23 | Kenneth E Santucci | Cable clamp |
US3580485A (en) * | 1968-05-28 | 1971-05-25 | Monsanto Chemicals | Containers |
US4151916A (en) * | 1970-07-15 | 1979-05-01 | Ab Anero | Packaging materials |
WO1986003474A1 (en) * | 1984-12-13 | 1986-06-19 | Metal Box Public Limited Company | Containers |
WO1990009932A1 (en) * | 1989-02-27 | 1990-09-07 | Minnesota Mining And Manufacturing Company | Z-tab innerseal for a container and method of application |
US5857582A (en) * | 1995-03-15 | 1999-01-12 | Danisco A/S | Package comprising a tray-shaped bottom part and a cover |
US5992674A (en) * | 1992-12-21 | 1999-11-30 | Danisco A/S | Tray and two part cover for easy opening and handling |
US20060083909A1 (en) * | 2004-10-19 | 2006-04-20 | Matthews David J | Easy-open dough packages and related methods of manufacture |
EP3251968A1 (en) * | 2016-05-31 | 2017-12-06 | Genoveva Serra Caselles | Cover for a peel-package made of rigid or flexible foil with a sealed pull tab |
ES2678669A1 (en) * | 2017-02-14 | 2018-08-16 | Genoveva Serra Caselles | Improved "open-easy" lid made of rigid or flexible film with a sealed flap (Machine-translation by Google Translate, not legally binding) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3166234A (en) * | 1961-04-10 | 1965-01-19 | Lily Tulip Cup Corp | Plastic container with plait formed pull tab |
-
1965
- 1965-06-16 GB GB25421/65A patent/GB1086841A/en not_active Expired
-
1966
- 1966-04-14 US US542556A patent/US3381884A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3166234A (en) * | 1961-04-10 | 1965-01-19 | Lily Tulip Cup Corp | Plastic container with plait formed pull tab |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3580485A (en) * | 1968-05-28 | 1971-05-25 | Monsanto Chemicals | Containers |
US3516631A (en) * | 1969-07-28 | 1970-06-23 | Kenneth E Santucci | Cable clamp |
US4151916A (en) * | 1970-07-15 | 1979-05-01 | Ab Anero | Packaging materials |
WO1986003474A1 (en) * | 1984-12-13 | 1986-06-19 | Metal Box Public Limited Company | Containers |
US4723391A (en) * | 1984-12-13 | 1988-02-09 | Metal Box Public Limited Company | Containers |
US4762246A (en) * | 1984-12-13 | 1988-08-09 | Metal Box Public Limited Company | Containers |
WO1990009932A1 (en) * | 1989-02-27 | 1990-09-07 | Minnesota Mining And Manufacturing Company | Z-tab innerseal for a container and method of application |
AU639449B2 (en) * | 1989-02-27 | 1993-07-29 | Unipac Corporation | Z-tab innerseal for a container and method of application |
EP0680890A1 (en) * | 1989-02-27 | 1995-11-08 | Minnesota Mining And Manufacturing Company | Z-tab innerseal for a container |
US5992674A (en) * | 1992-12-21 | 1999-11-30 | Danisco A/S | Tray and two part cover for easy opening and handling |
US5857582A (en) * | 1995-03-15 | 1999-01-12 | Danisco A/S | Package comprising a tray-shaped bottom part and a cover |
US20060083909A1 (en) * | 2004-10-19 | 2006-04-20 | Matthews David J | Easy-open dough packages and related methods of manufacture |
EP3251968A1 (en) * | 2016-05-31 | 2017-12-06 | Genoveva Serra Caselles | Cover for a peel-package made of rigid or flexible foil with a sealed pull tab |
ES2664769R1 (en) * | 2016-05-31 | 2018-08-13 | Genoveva Serra Caselles | Open-easy lid for rigid or flexible film container with sealed flap |
ES2678669A1 (en) * | 2017-02-14 | 2018-08-16 | Genoveva Serra Caselles | Improved "open-easy" lid made of rigid or flexible film with a sealed flap (Machine-translation by Google Translate, not legally binding) |
Also Published As
Publication number | Publication date |
---|---|
GB1086841A (en) | 1967-10-11 |
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