US3773207A - Easy-open thermoplastic container package - Google Patents
Easy-open thermoplastic container package Download PDFInfo
- Publication number
- US3773207A US3773207A US00203308A US3773207DA US3773207A US 3773207 A US3773207 A US 3773207A US 00203308 A US00203308 A US 00203308A US 3773207D A US3773207D A US 3773207DA US 3773207 A US3773207 A US 3773207A
- Authority
- US
- United States
- Prior art keywords
- lid
- container
- central panel
- tab
- rim
- 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
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Classifications
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- 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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0235—Removable lids or covers with integral tamper element
- B65D43/0237—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element
- B65D43/0254—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element only on the inside, or a part turned to the inside, of the mouth of 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
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
- B65D51/1661—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element by means of a passage for the escape of gas between the closure and the lip of the container mouth
- B65D51/1666—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element by means of a passage for the escape of gas between the closure and the lip of the container mouth the closure being for a box-like 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
- B65D2401/00—Tamper-indicating means
- B65D2401/15—Tearable part of the closure
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00064—Shape of the outer periphery
- B65D2543/00074—Shape of the outer periphery curved
- B65D2543/00092—Shape of the outer periphery curved circular
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00259—Materials used
- B65D2543/00296—Plastic
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00425—Lids or covers welded or adhered to 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
- B65D2543/00509—Cup
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
- B65D2543/00546—NO contact
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00601—Snapping means on the container
- B65D2543/00611—Profiles
- B65D2543/0062—Groove or hollow bead
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00601—Snapping means on the container
- B65D2543/00675—Periphery concerned
- B65D2543/00685—Totality
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00712—Snapping means on the lid
- B65D2543/00722—Profiles
- B65D2543/00731—Groove or hollow bead
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00712—Snapping means on the lid
- B65D2543/00787—Periphery concerned
- B65D2543/00796—Totality
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00824—Means for facilitating removing of the closure
- B65D2543/00833—Integral tabs, tongues, handles or similar
- B65D2543/00842—Integral tabs, tongues, handles or similar outside of the lid
Definitions
- ABSTRACT A thermoplastic container package wherein both the container and its lid have horizontal rims and descending flanges.
- the lid rim has a peripheral score line along its undersurface and the flanges are sealed along their length except adjacent a lid tab utilizable for lifting and thereby severing the score line and removing the lid from the container.
- a tight fitting reclosure of the lid is obtained by the coaction of an outwardly protruding lid closure bead adjacent the junction of the lid central panel and its peripheral substantially vertical wall, and of a juxtaposing groove surrounding the inside of the container.
- the container package be easy to manufacture without having the heretofore problem of registering the tab of a lid with the tab of a container prior to scaling the lid to the container. This problem is eliminated because only the lid has a tab and the lid can be randomly placed on a container and sealed without worrying about what direction the tab is facing.
- thermoplastic container package having a full easy-open lid sealed thereto and removable therefrom without need of special tools or skills.
- thermoplastic container package having a full easy-open lid sealed thereto and severably removable therefrom along a continuous score line along most of the periphery of the underside of the lid rim.
- thermoplastic container package having a full easy-open lid, the container and lid having flanges sealed together and remaining together on the container when the score line is severed and the lid is re moved from the container.
- thermoplastic container package of this invention comprises in combination an open-ended container having a closed base, sides integral with the base, a container rim integral with an extending substantially horizontally from the sides, and a container flange integral with and descending the rim.
- the container package also comprises a lid having a central panel, an integral substantially horizontally extending lid rim peripheral to the central panel and a flange integral with and descending from the lid rim.
- the lid has a substantially continuous score line along its undersurface and substantially peripheral to its central panel.
- the lid also has an unscored tab portion integral with and descending from the rim for removing the lid and replacing it on the container.
- the container and lid flanges are sealed to each other except adjacent the lid tab portion such that they remain sealed to each other and on the container when the tab is lifted, the score line is severed and the lid interior of the score is removed from the container.
- the lid can include a generally vertical wall peripheral to the central panel and integral with and adjoining the central panel and the rim.
- the lid can also include an outwardly protruding peripheral lid closure bead adjacent the junction of the wall and the central panel for coacting with a juxtaposingly abutting circumferential groove in the interior surface of the container sides.
- the bead can be continuous around the panel and the groove can be continuous around the interior surface 0 of the container sides.
- the bead tapers OK to non-existence adjacent and below the tab. Coaction of the bead in the groove provides for a tight lid closure on the container.
- Both the container sides and the generally vertical wall of the lid extend substantially verti- 5 cally downward from their respective rims and extend inwardly toward the center of the central panel to form a substantially horizontal step and then extend downwardly and outwardly from the central panel to where they adjoin their respective groove and bead.
- the lid tab can be abhered to an underlying'portion of the container flange.
- the lid and container flanges and the tab can descend substantially vertically from their respective rims at an angle of from about to from the substantially horizontal plane of the lid rim, and the container sides can be tapered.
- the lid wall portion extending downwardly and outwardly from the substantially horizontal step can include a plurality of still slightly further inwardly protruding stacking lugs for supporting the central panel of an overlying nested lid and preventing the central panel of the overlying lid from lodging within an area defined by the horizontal step and the stacking lugs of the supporting lid.
- the continuity of the outwardlyprotruding lid closure bead can be broken by a plurality of vertical vents or channels carved therein and running from the bottom surface of the central panel to the top of the closure bead. The vents allow air to escape from the container when lid reclosure is effected on the container.
- the continuity of the score line along each side of the lid tab and adjacent the junction of the lid rim and lid flange can be broken by a window to provide a skip in the score line which increases the force exerted therethrough and facilitates severing the score line around the rest of the container lid rim.
- FIG. 1 is a perspective view of a thermoplastic container package.
- FIG. 2 is a top plan view of the container lid of FIG.
- FIG. 3 is an enlarged detailed cross section taken through the tab portion and the stacking lug of the container package along line 3-3 of FIG. 2.
- FIG. 4 is an enlarged detailed cross section taken along line 44 of FIG. 2.
- FIG. 5 is the enlarged detailed cross section of FIG. 4 shown with the lid removed.
- FIG. 6 is an enlarged detailed cross section taken through a stacking lug along line 66 of FIG. 2.
- FIG. 7 is an enlarged detailed top cross section taken through a vent along line 7-7 of FIG. 6.
- FIG. 8 is a perspective view of another embodiment of the container package of this invention.
- FIG. 1 is a perspective view of a thermoplastic container package 10 comprised of an open-ended container 12 having a closed base 14, sides 16 integral with the base and in turn having a continuous circumferential groove 18 (FIGS. 3-5) surrounding the inside of sides 16 of container 12.
- the grooves can, but need not, result in or impress a corresponding protruding bead 19 (same figures) on the outside of container sides 16.
- Sides l6 terminate in an integral substantially horizontal rim 20 (same figures) and an integral descending flange 22 (same figures).
- lid 24 also shown as part of the container package of FIG. 1, is lid 24 having a central panel 26,
- Central panel 26 can include a continuous upwardly protruding reinforcing bead (not shown) extending around the central panel equidistant from and proximate to the junction of the lid wall and central panel.
- FIG. 1 shows lid 24 having a substantially continuous score line 46 in the undersurface of lid rirn 30 and substantially diagonally to where it adjoins the edges of tab 34 where the tab adjoins lid flange 32.
- Tab 34 is not sealed to underlying container flange 22 (see FIG. 3), but lid flange 32 to either side of tab 34 is sealed to flange 22 (FIGS. 3-6).
- FIG. 1 also shows wall W of lid 24 having a substantially vertical wall portion 28 and a substantially horizontal step 36 (better shown in FIGS. 2 and 3) extending inward from generally vertical wall portion 28 and 38' which protrude slightly further inwardly from the edge of step 36 and from the downwardly and outwardly extending lower portions 38 of wall W.
- wall W of lid 24 having a substantially vertical wall portion 28 and a substantially horizontal step 36 (better shown in FIGS. 2 and 3) extending inward from generally vertical wall portion 28 and 38' which protrude slightly further inwardly from the edge of step 36 and from the downwardly and outwardly extending lower portions 38 of wall W.
- Lid 24 also includes an outwardly protruding lid closure bead 40peripheral to central panel 26 and adjoining panel 26 and the aforementioned lower portion-of 'wall W.
- the bead can be continuous around panel 26 but preferably it tapers off to non-existence adjacent and below the tab. This tapering facilitates removal and closure of lid 26 on container 10.
- the continuity of bead 40 can be broken by a plurality of vents or channels 42 carved therein, which run substantially vertically from the bottom surface of central panel 26 to the top of bead 40 and which can be aligned with and feed into a plurality of stacking lugs 38' of wall W.
- Vents 42 allow air to escape from the interior of container 12 and exit into, i.e., behind stacking lugs 38' when lid 24 is securely placed on container 12.
- Lid 26 can also include a continuous upwardly protruding circular reinforcing bead (not shown) having a radius of curvature shorter than that of lid closure bead 40.
- FIG. 2 is a top plan view of the container lid of FIG. 1 and shows a plurality of stacking lugs 38' protruding slightly more inwardly than inwardly extending sub stantially horizontal step 36 of wall W whose generally vertical portion 28 adjoins outwardly extending lid n'm 30, a portion of which in turn adjoins tab 34.
- FIG. 3 is an enlarged detailed cross section taken through the tab portion along line 3-3 of FIG. 2 and shows the juxtaposingly abutting relationship of lid 24 and container 12. More particularly, FIG. 3 shows the coaction of lid closure bead 40 with juxtaposingly abutting groove 18 in one of the container sides 16, the coaction providing a tight reclosure fit of the lid on the container. Stacking lug 38' juts further inwardly than also inwardly extending adjacent lower angular portions 38 of wall W. (See 38 of FIG. 4).. FIG. also shows lid rim 30 and adjoining tab 34 juxtaposingly abutting respective underlying adjoining container rim and container flange 22.
- FIG. 4 is an enlarged detailed cross section taken along line 4-4 of FIG. 2 through a section of lid wall W that does not have a stacking lug and shows that the lower angular portion 38 of wall W does not extend as far inward toward the direction of central panel 26 as does protruding stacking lug 38' of FIG. 3.
- FIG. 4 also shows that lid rim 30 is not sealed to underlying container rim 20, has a score line 46 thereunder and adjoins lid flange 32 sealed to underlyingcontainer flange 22.
- FIG. 5 is an enlarged detailed cross section showing the detailed cross section of FIG. 4 when lid 24 is removed therefrom.
- FIG. 6 is an enlarged detailed cross section taken along line 66 of FIG. 2 through stacking lug 38' and through vent 42, carved into lid closure bead 40. Vent 42 runsfrom the bottom surface of central panel 26 to the top of lid closure bead 40 and, as previously stated, allows air to escape from the container when lid 24 is closed on the container 12. 1
- FIG. 6 taken with the previous figures also indicates that score line 46 runs continuously around the undersurface of lid rim 30 and that lid and container flanges 32 and 22 respectively are sealed to each other all the I way around the container up to where;score lines 46 dows 226 in lid rim 1 30 and in lid flange 132 adjacent tab 134. Score line 146 adjoins the edge of window 226 that defines and adjoins the respective edges of tab 134.
- tab 34 is lifted with a force sufficient to initiate and effect severance of score line 46 which occurs on either side of tab 34 and then occurs continuously along the arcs of score line 46 on opposing sides of lid rim 30.
- the last point to sever on the score line usually is within a lid rim area opposite of tab 34.
- lid flange 32 remains sealed to container flange 22. Except for the area that was under tab 34, a portion of lid rim 30 remains integral with lid flange 32, the width of this portion remaining depending upon where score line 46 is located on the lid rim in relation to the junction of it and lid flange 32.
- the windows provide a skip in score line 146 such that any force utilized to initiate severance of score lines 146 adjacent tab 134, will be increased through the window skips and this increased force renders it easier to sever score line 146 around the rest of container rim 130.
- Score line 46 or 146 can be located anywhere along the width of the undersurface of lid rim 30 from its junction with lid flange 32 to its junction with wall W so long as the easy-opening feature of this invention is maintained. It has been found that satisfactory openings can be obtained when score line 46 in lid rim 30 is located as shown in the drawings.
- the angle at which the lid and container flanges 32 and 22 respectively and at which tab 34 descend from their respective substantially horizontal rims can be from about 70 to 90 but preferably is about 78, or, otherwise stated, about l2 from a line drawn vertically from the junction of lid rim 30 and lid flange 32. Such an angle has been found advantageous because it facilitates the manufacture and sealing of the lid and container flanges.
- a tight and secure reclosure of lid 24 on container 12 can be effected by setting the lid on the container and pushing downward until a tight-fit-implying popping sound is heard as lid closure bead 40 coacts with and seats itself within groove 18 of container 12. Reclosure and initial closure or capping is facilitated by vents 42 carved vertically in lid closure bead 40 which allow otherwise trapped and resisting air pressure to escape through the vents from the container.
- Stacking lugs 38 in lid 24 allow many such lids to be nested on one another because they prevent the central panels of overlying lids from becoming blocked or lodged within the substantially vertical wall W or underlying lids.
- Lugs 38 can be of any practical number or size. Preferably, six to eight lugs are employed and preferably they are equidistant from each other. The lugs can protrude inward to any extent sufficient to prevent the aforementioned lodging.
- An abhesive can be utilized to abhere the portion of lid rim 30 adjacent and extending into tab 34, to the underlying portion of container rim 22.
- the abhesive can be any suitable cured or non-cured release agent which could be made from parafinns, parafin oils, amides and silicones and vcommonly employed as an abhesive for thermoplastic materials.
- An example of an non-cured silicone release agent is that sold by Inmont Corporation as I.P.l. (International Printing Ink, Co.) No. F-60909.
- thermoplastic container package comprising in combination:
- a lid for closing the open end of said container, said lid having a central panel
- lid rim peripheral to said central panel, said lid rim having in its undersurface a substantially continuous score line substantially peripheral to said central panel,
- an unscored tab integral with and descending from said lid rim, for severably removing said lid from and replacing said lid on said container,
- a lid flange integral with and descending from said lid rim, said container flange and lid flange being sealed to each other such that they remain so sealed on said container when said lid tab is lifted said score line is severed and said lid interior of said score is removed from said container.
- vents are aligned with and vertically feed and allow air to escape into a plurality of said stacking lugs.
- vents are aligned with and vertically feed and allow air to escape into a plurality of said stacking lugs.
Abstract
Description
Claims (21)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US20330871A | 1971-11-30 | 1971-11-30 |
Publications (1)
Publication Number | Publication Date |
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US3773207A true US3773207A (en) | 1973-11-20 |
Family
ID=22753417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US00203308A Expired - Lifetime US3773207A (en) | 1971-11-30 | 1971-11-30 | Easy-open thermoplastic container package |
Country Status (1)
Country | Link |
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US (1) | US3773207A (en) |
Cited By (84)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3858756A (en) * | 1972-12-12 | 1975-01-07 | Frank Corp Alan I W | Vented container and lid |
US3874556A (en) * | 1972-12-11 | 1975-04-01 | Jr Raymond Finkelston | Package with complementary body sheets |
US3955742A (en) * | 1975-02-24 | 1976-05-11 | Marshall Paul W | Container lid with integral removable eating utensil |
US3964635A (en) * | 1973-12-26 | 1976-06-22 | Owens-Illinois, Inc. | Recessed, rim-locking container closure |
USD243231S (en) * | 1975-07-28 | 1977-02-01 | Owens-Illinois, Inc. | Drinking cup lid or the like |
US4006839A (en) * | 1975-07-28 | 1977-02-08 | Bellaplast Gmbh | Container with snap cover having frangible portions |
GB2120643A (en) * | 1982-05-21 | 1983-12-07 | Raffinage Cie Francaise | Cap for hermetically-sealing containers |
US4487329A (en) * | 1983-10-13 | 1984-12-11 | Maryland Cup Corporation | Tamper-evident closure |
US4488658A (en) * | 1983-12-12 | 1984-12-18 | Sealright Co, Inc. | Tamper evident food package |
US4747510A (en) * | 1987-07-06 | 1988-05-31 | Fort Howard Cup Corporation | Tear open lid |
US4836407A (en) * | 1987-08-04 | 1989-06-06 | Cpc-Rexcel, Inc. | Tamper-evident, differential pressure-thermoformed lidded plastic container |
US4881656A (en) * | 1988-10-24 | 1989-11-21 | Sandusky Plastics, Inc. | Tamper evident container lid and method of making the same |
US4893452A (en) * | 1987-08-04 | 1990-01-16 | Cpc-Rexel, Inc. | Method for making a tamper-evident, differential pressure-thermoformed lidded plastic container |
US4951836A (en) * | 1988-10-13 | 1990-08-28 | Hokkai Can Co., Ltd. | Easy-open container |
US4966294A (en) * | 1990-01-16 | 1990-10-30 | Fabri-Kal Corporation | Tamper-evident closure for wide mouth container |
FR2648116A1 (en) * | 1989-06-13 | 1990-12-14 | Gen Foods Ltd | MECHANICAL OR MANUAL VACUUM SEALED PACKAGING BOX, FULL OR PARTLY EMPTY |
US5129531A (en) * | 1991-02-25 | 1992-07-14 | Creative Packaging Corp. | Closure assembly with breakaway tamper evident membrane |
US5168140A (en) * | 1991-02-11 | 1992-12-01 | Helmut Welker | Microwave coffee brewer and travel mug |
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EP0138592A2 (en) * | 1983-10-13 | 1985-04-24 | Fort Howard Cup Corporation | Combination of a tamper-evident closure and a container |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: JAMES RIVER-DIXIE/NORTHERN, INC., A CORP. OF VA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN CAN COMPANY, A CORP. OF NJ;REEL/FRAME:004097/0720 Effective date: 19820924 |
|
AS | Assignment |
Owner name: JAMES RIVER-NORWALK, INC., RIVERPARK, P.O. BOX 600 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JAMES RIVER-DIXIE/NORTHERN, INC.;REEL/FRAME:004332/0546 Effective date: 19840905 |
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AS | Assignment |
Owner name: JAMES RIVER PAPER COMPANY, INC., A CORP. OF VA. Free format text: MERGER;ASSIGNOR:JAMES RIVER-NORWALK, INC.;REEL/FRAME:005152/0359 Effective date: 19890420 |