Title of Invention

AN IMPROVED PLASTIC LID FOR CLOSING A CAN

Abstract An improvement in a plastic lid for a can of tne type which, comprises a tubular foody (10) having an upper- end (13} carrying a seat (IS) for the lid (201 which 5 comprises a sealing portion (21) provided v/ith an external edge (21b) and a tamper evident portion (2 5) comprising a lower skirt (25a), to be seated around part of the upper end (13) of the tubular body (10) and which is incorporated, to the external edge (21b) 10 of the sealing portion (21b), through bridges (26) which, are broken upon, the first opening of the lid (20) . The bridges (26) are axially disposed around a circumferential extension of the upper end (13) of the tubular body (10) , in order to connect an upper edge 15 {25b) of the lower skirt (25a) with Che external edge [2lb) of the sealing portion (21) in points which are angularly spaced apart.
Full Text IMPROVEMENT IN A CAN PLASTIC LID
Field of the Invention
The present invention refers to an improved plastic
lid for closing a can, obtained in a metallic sheet
5 and "which, is of the type comprising a tubular body,
with, its lower edge affixing or incorporating a. bottom
wall and with its upper edge carrying, directly by
means of a deformed portion of the tubular body or by
means of an annular upper wall portion, a seat for the
10 seating and retention of the press-fit lid.
Particularly, the invention refers to the provision of
a plastic lid for a can of the type considered above
and which is used for containing produces of
progressive consumption, such as certain food
15 articles.
Background of the Invention
Determined products, such as certain food articles,
have to be submitted to a hermetic storage and
provided with a clear "visual indication to the
20 consumer that the container in which they are
presented to the market has not been violated. Since
many of these products are of progressive consumption,
it is indispensable that after the first opening of
the container, the lid, which gives access to the
25 inside of the can, may be reclosed as many tirres as
necessary during the progressive consumption of the
stored product, in order to guarantee the tightness of
the reclosed can and to protect the remaining content
thereof.
30 patent application PI0203950 (PCT/BR03/00030) of the
same applicant discloses a plastic lid construction
comprising, in a single piece: a sealing portion which
is removably seated and retained in a seat wedianly
provided in an annular upper wall which has its
35 external edge usually double seamed to the upper end

PCT/BR2004/000XXX
of the tubular body; and a tamper evident portion,
comprising a lower skirt to be seated around the upper-
end of the tubular body, and an upper ring, seated on
the upper end of the tubular body and "whih is
5 incorporated, externally, to the lower skirt and,
internally, through breakable radial bridges, to an
upper end of the sealing portion, which projects
radially outwardly from the seat. The tamper evident
portion presents an interruption extending along the
10 width of the upper ring and along at least part of the
height of the lower skirt, along which is lodged a
gripping tab which, when pulled, after the rupture of
the temper evident portion, allows achieving an, easy
and controlled opening of the lid.
15 The construction described above results in a
reclosable plastic lid, of simple construction and
relatively low cost, incorporating a gripping tab
which facilitates the opening, as well as a reliable
seal element which permits the prompt visualization of
20 violation.
The prior constructive solution cited above is
particularly adequate for the closure of cans used to
contain products of progressive consumption, whose
lids are not subject, during the closure, storage and
25 shipping operations of said cans, to impacts, in the
axial opening direction, in relation to other cans or
to storage and handling means.
It has been verified in these known cans that, when
the lower skirt of the tamper evident portion is
30 submitted to certain. involuntary ascending axial
forces and displacements, at least some of the radial
bridges, which are located closer to the region
submitted to said forces, are broken, indicating,
through the partial (but visible) damage caused to the
35 seal element, that the content of the can ,has been

3
violated, which, in these cases, has not really
occurred.
In brief, the construction of the seal defined in
PIO2O3950-8 is susceptible to involuntary ruptures in
5 determined handling conditions to which the can is
submitted.
Object of the invention
The object of the invention is to provide a reclosable
plastic lid far the type of can considered herein and
10 such as described in the patent application cited
above, but presenting an improved construction,
according to which the tamper evident portion becomes
more resistant to involuntary ruptures when the
plastic lid is submitted to certain usual forces and
15 impacts during the closure, storage and shipping
operations of said closed cans.
Disclosure of the Invention
The improvement of the present invention is directed
to a. lid which, coroprises, in a single piece, a sealing
20 portion, removably seated and retained in the seat and
which is provided with an external edge projecting
radially outwardly from the seat; a tamper evident
portion comprising a lower skirt, to be seated around
part of the upper end of the tubular body and which is
25 superiorly incorporated, through bridges, to the
external edge of the sealing portion, the tamper
evident portion presenting An interruption. extending
along at least part of the height of the lov/er skirt,
the sealing portion incorporating, at its external
30 edge, a gripping tab projecting through said
interruption of the tamper evident portion, said,
bridges being broken when submitted to a certain
pulling force, which separates the tamper evident
portion from the sealing portion upon the first
35 opening of. the lid.

5 external enu the sealing XXXXXXXXXXX
are angularly spaced from each, other.
According to the improved construction, the sealing
portion extends radially, until the peripheral edge of
che upper end of the tubular body of the can,
10 superiojrly covering and protecting the can, and having
its external edge incorporating, inferiorly, through a
plurality of breakable axial bridges, the lower skirt
of the tamper evident portion.
The new axial arrangement of the breakable bridges,
15 generally seated around the upper end of che tubular
body of the can, makes said bridges be submitted to 3
compresstve force and not to a pulling force, when the
lower skirt is forced upwardly, by impact of the lid
against any other element, resisting much better to
20 said forces and avoiding the undue rupture thereof.
Brief Description of the Drawings
The invention will be described below, with reference
to the appended drawings, in which:
Figure 1 is a perspective view of a plastic lid
25 constructed according to an embodiment of the present
invention and incorporating a tamper evident portion;
Figure 2 is an exploded perspective view of the" lid of
figure 1, after the rupture of the tamper evident
portion;
30 Figure 3 is an upper plan view of the plastic lid
illustrated in figure 1;
Figure 4 is a partial diametrical cross-sectional view
of the lid illustrated in figures 1-3 and mounted to
che upper end of a can, said section being taken
38 according to line IV-IV of figure 3; and

PCT/BR2004/000129
Figure 5 is a view similar to that of figure 4, but
with the section being taken according to line V-V of
figure 3.
Description of the Illustrated Embodiment
5 According to the illustrated embodiment, the present
lid can be applied to a metallic sheet can comprising
a tubular body 10, with a lower end 11 securing a
bottom wall 12 and with an upper end 13 securing, by a
double seam 14, an annular upper wall 15, which
10 defines, internally, a seat 16 for the hermetic
seating of the lid 20.
The annular upper wall IS can take the form of a
structural ring, as illustrated in figures 4 and 5, or
the form of an annular plate in the cans with, great
15 dimensions, such as the 18-liter cans.
The construction of both the annular Tapper wall 15 and
the seat 16 may be achieved by different manners,
provided that it allows for a hermetic and secure
fitting of the lid 20 to the upper part of the can. In
20 figures 4 and 5, the construction of the annular upper
wall 15 and the seat IS is accomplished, as described
and claimed in patent application PI 9408543-5 granted
to the same applicant in Brazil and in other countries
(in the United States, US5899352 and in Europe, EPO
25 0706486), and therefore will not be described in
details in the present disclosure.
According to the invention, and as illustrated in the
appended drawings, the lid 20 is preferably
constructed in plastic material, transparent or not,
30 comprising a sealing portion 21 of adequate
construction, so as to be removably seated and
retained in the seat 16, said sealing portion 21
presenting an external edges 21b which is seated on the
upper end 13 of the tubular body 10 of the can. The
35 lid 20 further comprises, in a single piece with the

6
sealing portion 21, a tamper evident portion 25 having
a lower skirt 25a which is generally tightly seated
around, a circumferential extension of the upper end 13
of the tubular body 10, more particularly its double
S seam 14, and presenting an upper end 25b which is
incorporated, by means of manually breakable bridges
26, to the external edge 2lb of the sealing portion
21. The bridges 2 6 connect the upper end 2 5b of the
lower skirt 2 5a with the external edge 21b of the
10 sealing portion 21 in points which are angularly
spaced apart.
According to the present invention, the bridges 26 are
broken when submitted to a certain pulling force,
which separates the tamper evident portion 25 from the
15 sealing portion 21, upon the first opening of the lid
20.
The tamper evident portion 25 presents an interruption
2 5c, in its circumferential extension, extending along
at least part of the height of the lower skirt: 25a,
20 said interruption 25c defining a certain
circumferential spacing between respective confronting
edges of the lower skirt 25a, on both sides of the
interruption 25c.
According to the present invention, the sealing
25 portion 21 incorporates a gripping tab 27, axially
downwardly projecting through said interruption 25c of
the tamper evident portion 25, for example remaining
substantially leveled with the lower skirt 25a.
In the illustrated embodiment, the gripping tab 27
30 projects along the whole axial extension of the lower
skirt 25a, but it can also project axially inferiorly
beyond the axial extension of the lower skirt 2 5a.
According to the present invention, the tamper evident
portion 25 comprises at least one breakable lock 28,
35 connecting the griping tab 2 7 with the lower skirt

7
25a. The gripping tab 27 is (manually operable only
upon the rupture of part of the tamper evident portion
25, for example, upon the rupture of each breakable
rod 23.
5 In the illustrated construction,the lower skirt. 25a
incorporates the ends of a bridge 25d,
circumferentially extended over the interruption 25c
of the tamper evident portion 2 5 and over the gripping
tab 27. The bridge 25d presents a first end 25e, which
10 is incorporated to the lower skirt 25a by connecting
means 25f, which are broken when said first end 25e is
forced away from the lower skirt 25a, for example, by
being pulled radially outwardly from, in order to
liberate the manual access to the gripping tab 27. In
15 the illustrated embodiment, the bridge 25d has its
first end 25e superposed to said lower skirt ?.5a and
incorporated to the latter by two connecting means
25f, which are circumferentially spaced from each
other.
20 The gripping tab 27 is interiorly incorporated to the
bridge 25d through a breakable lock 28, in the form of
one or more axial bridges, which are manually broken
upon the first opening of the lid.
The provision of the gripping tab 2 7 allows the
25 sealing portion 21 to be easily removed from its
seating condition on the seat 16, and also a
control led and progressive opening of the can, first
in the region adjacent to the gripping tab 27, and
subsequently in the remaining of the seat, preventing
30 the stored product from being inadvertently taken out
from the can.
According to the present invention, the gripping cab
27 may present one of Che massive and ac least
partially perforated forms, defining a tag, auch as in
35 the illustrated construction.

PCT/BR2004/000129
It should be understood that Che gripping tab 27 can
be massive and formed from a respective portion of the
lower skirt 25a, remaining perfectly leveled with the
latter and maintaining a gap 29 therebetween.
5 In the illustrated construction, the external edge 21b
of the sealing portion 21 incorporates a small
cylindrical lower flap 21c, which surrounds,
preferably tightly, a circumferential extension of the
upper end 13 of the tubular body 10 and from which the
10 bridges 26 depend, being interiorly incorporated to
the upper end 25b of the lower skirt 25a.
It is also possible, a.a illustrated, for the lower
skirt 2Sa to incorporate a circumferential internal
projection 25h, axially spaced from the external edge
15 21b of the sealing portion 21 and which is dimensioned
to be seated and axially locked under the double seam
14 at the upper end 13 of the tubular body 10 and
around the latter.
In a. constructive form,the external edge 21b of the
20 sealing portion 21 incorporates an upper
circumferential rib ,25g, continuous or defined in
segments and which projects over the upper end 13 of
the tubular body 10, ao as to be loosely and
telescopically fitted externally or internally to the
25 lower end 11 of another tubular body 10 stacked over
said tubular body 10.
In case the upper circumferential rib 25g presents a
diameter that is smaller than the lower end 11 of the
tubular body 10, it will be fitted inside a
30 circumferential recess 12a provided in the bottom wall
12, internally to the lower end ll of another tubular
body 10 stacked over said tubular body 10.
While the invention has been described in. relation to
a can embodiment presenting only one constructive
35 form, it should be understood that alterations could


9
he made, without departing from the scope of
protection defined in the appended, claims.

10
CLAIMS
1- An improvement in a plastic lid for a can of the
type which comprises a tubular body (10) having a
lower end (11) and an upper end (13) carrying a seat
5 (16) tor the "hermetic seating of a lid ^20) vrhich
comprises, in a single piece, a sealing portion (21),
removably seated and. retained in the seat (16) and
which is provided with an external edge (21b)
projecting radially outwardly from the seat (16); a
10 tamper evident portion (25} comprising a lower skirt
25a, to be seated around part oE the upper end (13) DE
the tubular body (10) and which is superiorly
incorporated, through bridges (26), to the external
edge (21b) of the sealing portion (21b.) , the tamper
15 evident portion (25) presenting an interruption (25c)
extending- along at least part of Che height of the
lower skirt (2 5a), the sealing portion (21)
incorporating, at its external edge (21b>, a gripping
tab {27) projecting through said interruption (25c) of
20 the tamper evident portion (2 5) , said bridges (26)
being broken when submitted to a certain pulling
force, which separates the tamper evident portion (2 5)
from the sealing portion (21) upon the first opening
of the lid (20) , characterized in that the bridges
25 (26) are axially disposed around a circumferential
extension of the upper end (13) of the tubular body
(10) , in order to connect an upper edge (25b) of the
lower skirt (25a) with the external edge (21b) of the
sealing portion (21) in pointa which are angularly
30 spaced apart.
2. The improvement as set forth in claim 1,
characterized in that the external end (2lb) of the
sealing portion {IX) incorporates a. small cylindrical
lower flap (21c) surrounding a circumferential
35 extension of the upper end (13) of the tubular body

XXXXXXXXXXXXXX
11
{10) from which the bridges {26) depend,
3 . The improvement as set forth in any of claims 1 or
2, in which the upper end (13) of the tubular body
(10) secures, by a double seam (14) , an annular wall
5 (15) in which is defined the seat (16) for the seating
of the lid (20) , characterized, in that the lower skirt
(25a) incorporates an internal circumferential
projection (25h), axially spaced from the external
edge (21b) of the sealing portion (21) and which is
10 dimensioned to be seated and axially locked under the
double seam (14), around the tubular body (10).
4. The improvement as set forth in claim 1,
characterized in that the gripping tab (27) is
substantially leveled with the lower skirt (25a)j
15 maintaining a gap (23) therebetween.
5. The improvement as set forth in claim 1,
characterized in that the tamper evident portion (25)
comprises at least one breakable lock (28) connecting
the gripping tab (2 7) with the lower skirt (25a).
20 6. The improvement aa get forth in claim 1,
characterized in that the lower skirt (25a)
incorporates the ends of a bridge (25d) ,
circumferentially extending over the interruption
(25c) of the tamper evident portion (25) and over the
25 gripping tab (27) , a first end (25e) of said ends of
the bridge (2 5f) being incorporated to the lower skirt
(25a) through connecting means (25f) which are broken
when said first end (25e) is forced away from the
lower skirt (25a), in order to liberate the manual
30 access to the gripping tab (27).
7. The improvement as set forth in claim 6,
characterized in that the bridge (25d) has its first
end (25e) superposed to the lower skirt (25a) and
incorporated thereto by two connecting means (25e)
35 which are circumferentially spaced apart.

12
8. The improvement as set forth in claim lp
characterized in that the upper end (21b) of the
sealing portion (21) incorporates a circumferential
upper rib (25g) , projecting over the- upper end (13) of
5 the tubular body (10) , so as to fit loosely and
telescopically in the lower end (11) of another
tubular body (10) stacked over said tubular body (10).

An improvement in a plastic lid for a can of tne type
which, comprises a tubular foody (10) having an upper-
end (13} carrying a seat (IS) for the lid (201 which
5 comprises a sealing portion (21) provided v/ith an
external edge (21b) and a tamper evident portion (2 5)
comprising a lower skirt (25a), to be seated around
part of the upper end (13) of the tubular body (10)
and which is incorporated, to the external edge (21b)
10 of the sealing portion (21b), through bridges (26)
which, are broken upon, the first opening of the lid
(20) . The bridges (26) are axially disposed around a
circumferential extension of the upper end (13) of the
tubular body (10) , in order to connect an upper edge
15 {25b) of the lower skirt (25a) with Che external edge
[2lb) of the sealing portion (21) in points which are
angularly spaced apart.

Documents:

00143-kolnp-2006-abstract.pdf

00143-kolnp-2006-claims.pdf

00143-kolnp-2006-description complete.pdf

00143-kolnp-2006-drawings.pdf

00143-kolnp-2006-form 1.pdf

00143-kolnp-2006-form 2.pdf

00143-kolnp-2006-form 3.pdf

00143-kolnp-2006-form 5.pdf

00143-kolnp-2006-international publication.pdf

00143-kolnp-2006-international search authority.pdf

00143-kolnp-2006-pct forms.pdf

143-KOLNP-2006-FORM-27.pdf

143-kolnp-2006-granted-abstract.pdf

143-kolnp-2006-granted-claims.pdf

143-kolnp-2006-granted-correspondence.pdf

143-kolnp-2006-granted-description (complete).pdf

143-kolnp-2006-granted-drawings.pdf

143-kolnp-2006-granted-examination report.pdf

143-kolnp-2006-granted-form 1.pdf

143-kolnp-2006-granted-form 18.pdf

143-kolnp-2006-granted-form 2.pdf

143-kolnp-2006-granted-form 26.pdf

143-kolnp-2006-granted-form 3.pdf

143-kolnp-2006-granted-form 5.pdf

143-kolnp-2006-granted-reply to examination report.pdf

143-kolnp-2006-granted-specification.pdf

143-kolnp-2006-granted-translated copy of priority document.pdf

abstract-00143-kolnp-2006.jpg


Patent Number 238263
Indian Patent Application Number 143/KOLNP/2006
PG Journal Number 05/2010
Publication Date 29-Jan-2010
Grant Date 28-Jan-2010
Date of Filing 18-Jan-2006
Name of Patentee BRASILATA S/A EMBALAGENS METALICAS
Applicant Address RUA ROBERT BOSCH, 332 01141-010 SAO PAULO-SP
Inventors:
# Inventor's Name Inventor's Address
1 ALVARES, ANTONIO CARLOS TELXEIRA RUA ROBERT BOSCH, 332 01141-010 SAO PAULO-SP
2 SENE, ANTONIO ROBERTO RUA ROBERT BOSCH, 332 01141-010 SAO PAULO-SP
PCT International Classification Number B65D 43/02
PCT International Application Number PCT/BR2004/000129
PCT International Filing date 2004-07-22
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 PI 0303138-1 2003-07-24 Brazil