U.S. patent application number 13/096050 was filed with the patent office on 2012-11-01 for package.
Invention is credited to Marc W. Gum.
Application Number | 20120273493 13/096050 |
Document ID | / |
Family ID | 47067110 |
Filed Date | 2012-11-01 |
United States Patent
Application |
20120273493 |
Kind Code |
A1 |
Gum; Marc W. |
November 1, 2012 |
PACKAGE
Abstract
A package has generally congruent front and back panels having
upper and lower edges and first and second side edges extending
vertically between the upper and lower edges. The upper, side, and
bottom edges of each panel are connected to the upper, side, and
bottom edges of the other panel. The panels are formed with a first
weakened tear line extending continuously from the connected first
side edges to the connected upper edges and with a second weakened
tear line extending continuously below the upper edges between the
connected first and second side.
Inventors: |
Gum; Marc W.; (East Prairie,
MO) |
Family ID: |
47067110 |
Appl. No.: |
13/096050 |
Filed: |
April 28, 2011 |
Current U.S.
Class: |
220/266 |
Current CPC
Class: |
B65D 75/5805 20130101;
B65D 75/5816 20130101; B65D 75/12 20130101; B65D 75/5866 20130101;
B65D 75/008 20130101 |
Class at
Publication: |
220/266 |
International
Class: |
B65D 41/32 20060101
B65D041/32 |
Claims
1. In a package comprising generally congruent front and back
panels having upper and lower edges and first and second side edges
extending vertically between the upper and lower edges wherein the
upper, side, and bottom edges of each panel are connected to the
upper, side, and bottom edges of the other panel, the improvement
wherein the panels are formed with: a first weakened tear line
extending continuously from the connected first side edges to the
connected upper edges, and a second weakened tear line extending
continuously below the upper edges between the connected first and
second side.
2. The package defined in claim 1 wherein the second tear line
extends in a generally straight line between the side edges and
generally parallel to the upper edges.
3. The package defined in claim 2 wherein the first tear line
crosses the second tear line.
4. The package defined in claim 3 wherein the first tear line
extends in an arc from the second tear line to the first side edges
and as a generally straight line from the second tear line to the
upper edges.
5. The package defined in claim 3 wherein the first tear line
crosses the second tear line at an angle of at least
45.degree..
6. The package defined in claim 2 wherein the first tear line has a
first section extending coextensively with a portion of the second
tear line from the first side edges and a portion extending from
the second tear line to the upper edges.
7. The package defined in claim 2 wherein the first and second tear
lines are spaced from and do not touch or intersect each other.
8. The package defined in claim 7 wherein the first tear line is
arcuate.
9. The package defined in claim 1 wherein the package further
comprises first and second gussets extending between rit respective
first and second side the front and back panels.
10. The package defined in claim 9 wherein the first and second
tear lines are also formed in the gussets directly between the
respective tear lines of the front and back panels.
11. The package defined in claim 9 wherein the first tear line
terminates at the upper edges between the gussets.
12. The package defined in claim 9 wherein the first tear line
crosses the first gusset and the second gusset is provided with a
carry handle.
13. The package defined in claim 1 wherein the edges are connected
by respective side, upper, and bottom welds.
14. The package defined in claim 13 wherein the panels are formed
at one end of each of the lines in the respective weld with an
outwardly open notch.
15. The package defined in claim 14 wherein one of the notches is
formed in the upper edge and the other of the notches is formed in
the second side edges.
16. The package defined in claim 15 wherein the front and back
panels are welded together to each side of the first tear line
adjacent the upper edge and between the upper-edge weld and the
second tear line.
17. The package defined in claim 1 wherein the tear lines are
formed by respective rows of perforations.
18. The package defined in claim 1 wherein the tear lines are
formed by thickness-reduced weakened strips.
19. The package defined in claim 1 further comprising an adhesive
strip on the front panel by means of which the upper edge can be
secured to the front panel after being folded over.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a package. More
particularly this invention concerns a package for marketing fluent
goods, that is liquids or particles.
BACKGROUND OF THE INVENTION
[0002] A typical package is formed by normally rectangular front
and back face panels each having a horizontal upper edge, a
horizontal lower edge, and a pair of normally vertical side edges
extending vertically between outer ends of the upper and lower
edges. These panels are typically made of a thermoplastic sheet or
of cardboard coated on at least one face with a thermoplastic. The
upper edges, the lower edges, and the side edges are heat-welded
together to form a closed pouch. In order to open this pouch, a
tear line formed by coextensive thin elongated weakened regions of
the panels and extending between two edges is provided. The regions
of the panels lying outward of these tear lines can be ripped off
to make a hole from which the contents of the pouch can be
poured.
[0003] To make a stand-up package of generally parallepipedal
shape, side gusset panels are provided between the side edges of
the front and back face panels. These gusset panels each have a
center fold so that in an empty, flattened condition of the
package, two subpanels of the gusset panels lie against each other
and the front and back panels are closely juxtaposed, but, when the
package is full, the front and back panels are widely spaced and
the two side panels extend generally in respective parallel planes
between the respective face-panel side edges.
[0004] Such a gusset bag is described in US 2011/0033133. It has
generally congruent front and back panels having upper and lower
edges and a pair of side edges extending vertically between the
upper and lower edges with first and second gussets of plastic film
each extending between one of the side edges of one of the panels
and the respective side edge of the other panel. The first gusset
can move between a folded-in position tucked between the panels and
a folded-out position projecting out from between the panels. A
weld extends between and seals together the upper edges, and a
reclosable fastener comprising a pair of matable strips secured to
inner surfaces of the panels extends horizontally below the weld.
Formations facilitate removal of a part of the front and back
panels above the fastener at the first gusset so that, when the
part is removed, the first gusset can be moved from the folded-in
to the folded-out position in which it forms a spout and fluent
contents of the bag can be poured out of the spout. A handle is
secured to the second gusset below the slide fastener and above the
lower edges.
[0005] According to an alternative configuration of US 2011/0033133
A1, the entire upper edge can be torn off along a weakened tear
line running between the two side edges, so that a pour spout
formed by the folded-out first side gusset is delimited by a
laterally adjoining transverse weld. In order to be able to close
the bag again after removing a partial quantity, a slide fastener
having profile strips is provided which both can be locked
together. Exactly like the weakened tear line, the zipper fastener
extends not only on the front and back panels but also on the first
side gusset in order to keep the side gusset in the folded-in state
when the bag is closed. Thanks to the first side gusset which can
be folded out, the fluent contents, for example palletized pet
food, washing powder, cat litter, road salt and powdery or granular
building materials can be accurately and easily dosed. However,
removing the fluent contents with a shovel, measuring cup or the
like through the relatively small opening is not possible or only
with difficulty. A similar configuration of a package with a
tear-off corner and a fastener arranged therebelow is known from
U.S. Pat. No. 6,971,794 B2.
[0006] Furthermore, US 2009/0136160 discloses a container or
package configured as a side-gusset bag from which the entire upper
edge can be torn off along a weakened tear line extending the full
width of the bag between the first side edge and the second side
edge. Inside the closed bag, a slide fastener is provided that has
interlocking profile strips as well as a slider. In order to be
able to have room for the slide fastener, the side gussets are
offset with respect to the upper bag edge. Accordingly, it is not
possible to fold the side gussets fixed by the slide fastener
outward to make emptying easier. Thus, the handling of the package
needs to be improved, in particular if the fluent contents is to be
poured out. A package having an upper edge that can be completely
torn off along a weakened tear line is also known from US
2006/0108375.
OBJECTS OF THE INVENTION
[0007] It is therefore an object of the present invention to
provide an improved package.
[0008] Another object is the provision of such an improved package
that overcomes the above-given disadvantages, in particular that is
versatile and easy to handle.
[0009] A further object is to provide an improved bag or package
where it is possible to take quantities from the bag with auxiliary
means such as a shovel or a measuring cup, and where it should also
be possible to pour out the contents, making complete emptying of
the package possible and simple.
SUMMARY OF THE INVENTION
[0010] A package has according to the invention has generally
congruent front and back panels having upper and lower edges and
first and second side edges extending vertically between the upper
and lower edges. The upper, side, and bottom edges of each panel
are connected to the upper, side, and bottom edges of the other
panel. The panels are formed with a first weakened tear line
extending continuously from the connected first side edges to the
connected upper edges and with a second weakened tear line
extending continuously below the upper edges between the connected
first and second side.
[0011] The bag or package according to the invention allows
different possibilities of use. First of all, starting at the first
longitudinal side, it is possible to tear off only a corner of the
upper edge so that a precise dosing is possible. In a particularly
advantageous manner, a carry handle can project in the region of
the second side edge so that the bag or package can be held in a
simple manner during a pouring process, whereby even in case of a
large volume and a heavy weight, good handling is possible. In
addition, it is also possible to tear the package completely open
at its upper edge, for which purpose the weakened tear line
extending from the second side edge is provided.
[0012] In order to implement the described handling possibilities,
different configurations are possible within the context of the
invention. According to a first configuration of the invention, the
second weakened tear line extends from the second side edge to the
first side edge and ends there at a spacing from the first weakened
tear line, the first weakened tear line and the second weakened
tear line intersecting and crossing each other. Such a
configuration results in the advantage that both weakened tear
lines can be high up on the bag or package, making a relatively
high filling height possible. According to a preferred development
of the invention the first weakened tear line and the second
weakened tear line intersect each other at an angle and do not run
parallel to each other or at a small acute angle where they
intersect. Due to the tensile forces acting in different directions
along the first weakened tear line or the second weakened tear line
during a tearing process this prevents the tear from propagating in
a wrong direction, i.e. accidentally going from the second weakened
tear line to the first tear line or vice versa.
[0013] According to an alternative configuration of the invention
the second weakened tear line extends from the second side edge to
the first side edge without intersecting the first weakened tear
line, so the weakened tear line ends at the first side edge at a
spacing from the first weakened tear line. With such a
configuration, the two weakened tear lines are completely
independent of each other, in that the first weakened tear line is
above the second weakened tear line. Incorrect tear propagation as
well as an operating error can be reliably prevented with the
context of such a configuration, but a slightly larger region of
the bag or package is necessary for the provision of the two spaced
tear lines.
[0014] According to a third embodiment of the invention, the second
weakening section line extends below the upper edge up to the first
weakened tear line and ends there. If the bag or package is to be
torn open by means of the second weakened tear line, the tear is
then advantageously formed on the second longitudinal side, wherein
in this case, the tear merges at the end of the second weakened
tear line into the first tear line and finally propagates to the
second longitudinal side. In other words, the two tear lines are
coextensive for a portions of their lengths.
[0015] In all variants according to the invention it is possible to
tear off only one corner or the entire upper edge. If, for example,
one needs to dispense the container's contents with a measuring cup
or a shovel, advantageously, the entire upper edge is detached. In
contrast, emptying by pouring is made easier if only a corner of
the bag or package is torn off along the first tear line. However,
in order to be able to completely empty the package, it is possible
to remove the remaining part of the upper edge along the second
weakened tear line at a later time.
[0016] According to a preferred configuration, the container
according to the invention is a side-gusset bag or package whose
front and back panels on the first side edge are connected by a
first side gusset and on the second side edge by a second side
gusset. The first weakened tear line and the second weakened tear
line then extend also between the front and back panels along the
side gussets to allow tearing open. Advantageously, the first
weakened tear line ends at the upper edge in a region between the
two side gussets. When tearing off a corner of the bag or package
along the first weakened tear line, accordingly, the entire upper
region of the first side gusset is removed as well so that the
first side gusset can be folded out to form a pour spout. If the
entire upper edge is detached with the aid of the second weakened
tear line from the second side edge up to the first longitudinal
side, preferably, the first side gusset and also the second side
gusset can be folded outwardly or at least spread. When a filled
package is opened, this results in a rectangular opening that
corresponds to the cross-section of the filled bag or package.
Then, if desired, the bag or package can be completely emptied all
at once.
[0017] If the package has side gussets, it is also possible to
provide a carry handle on the second side gusset. Suitable carry
handles are known from US 2011/0033133 that, by reference, is
incorporated in this disclosure. By means of the carry handle, on
the one hand, the still closed package can be comfortably
transported. Furthermore, in addition, an easy and accurate dosing
is possible if along the first weakened tear line, a corner of the
bag or package is detached.
[0018] According to a preferred configuration, the side edges are
reinforced by longitudinal welds. If the package with its front and
back panels and optionally also with its incorporated side gussets
is formed from individual film sections, the longitudinal welds are
also necessary for connecting the individual film section to each
other. Moreover, a reinforcement of the side edges by longitudinal
welds is also advantageous if the package is formed by folding and
sealing an individual film section or a film sheet.
[0019] At the first weakened tear line and also at the second
weakened tear line, a tear notch or cut can be formed at least at
one end so as to facilitate starting the tear. Such a tear notch or
such a cut is advantageously arranged in a welded region to prevent
accidental tearing as well as increased leakage of the package. In
case of the first weakened tear line, the welded region can be a
longitudinal weld or longitudinal welds on the first side edge or a
transverse weld at the upper edge. In case of the second weakened
tear line, the described tear aid is advantageously formed on the
second longitudinal side.
[0020] Additionally or alternatively to the described longitudinal
welds or the transverse weld at the upper edge it is also possible
to form separate welds for the tear notch. The welds can also
extend along a portion of the first weakened tear line or the
second weakened tear line so as to control the tear propagation in
an advantageous manner.
[0021] In the simplest case, the weakened tear lines are formed by
a perforation. However, since a perforation can affect the
tightness of the still closed package, depending on the sensitivity
of the fluent contents or the intended storage period, other
configurations of the weakened tear line in which the front and
back panels or the optionally provided side gussets are not
completely cut through are also possible. Thus, the weakened tear
lines can also be generated, for example, by stamping and/or by
means of a laser, the film material of the front and back panels or
the optionally provided side gussets being only weakened but not
completely cut through. In particular in case of the treatment with
a laser, the tear behavior is improved not only due to material
weakening but, depending on the film material, also due to
embrittlement.
[0022] Within the context of the invention, in particular such film
materials are suitable that are specified in the already cited US
2011/0033133.
[0023] Within the context of the present invention, the container
or package can be reclosed in a particularly simple manner in that
the opened section of the package is folded downwardly and is fixed
there with an adhesive strip. In contrast to fasteners having
profile strips, a significant simplification of the design as well
as its manufacture is achieved. Since the package according to the
invention is to be torn open in different ways, fasteners having
profile strips cannot be readily provided.
BRIEF DESCRIPTION OF THE DRAWING
[0024] The above and other objects, features, and advantages will
become more readily apparent from the following description,
reference being made to the accompanying drawing in which:
[0025] FIG. 1 is a perspective view of an opened package according
to the present invention;
[0026] FIG. 2 is a perspective view of an opened package according
to the invention that has been closed by folding over an upper
section;
[0027] FIG. 3 is a side view of a package in empty flattened
condition; and
[0028] FIGS. 4 and 5 show alternative views like FIG. 3 of a
package according to the invention.
SPECIFIC DESCRIPTION
[0029] As seen in FIG. 1 shows a package according to the invention
having opposing front and back wall panels 1 that each extend
between a respective first side edge 2a and a respective second
side edge 2b and from a closed and folded-flat bottom edge 3 to a
closed upper edge 4 of the bag or package. The bottom edges 3 and
the top edges 4 extend between lower and upper ends of the side
edges 2a and 2b.
[0030] Starting from the first side edge 2a of the package
illustrated in FIG. 1, a portion of the upper edge 4 can be
detached. The package is configured as a side-gusset bag with a
first side gusset panel 5a between the first side edges 2a of the
front and back panels 1 and a second side gusset panel 5b between
the second side edges 2b. While the first side gusset 5a is folded
out to form a pour spout 13, a carry handle 6 is mounted centrally
on the second side gusset panel 5b. The carry handle 6 makes it
easy to carry the package when it is closed. Furthermore, it is
also possible in a particularly easy manner to handle the torn-open
package illustrated in FIG. 1 and to pour fluent contents out of
the package.
[0031] FIG. 2 shows the package according to FIG. 1, but here the
entire upper edge 4 is torn off. In order to be able to reclose the
package, both side gussets 5a and 5b are folded in at least at
their upper regions between the front and back panels 1, and upper
regions of the front and back panels 1 with the side gussets 5a and
5b between them are folded over and fixed with an adhesive strip
7.
[0032] If, according to FIG. 2, the entire upper edge 4 is torn
off, a maximum filling opening is formed at the upper side of the
bag or package, so that it is possible to remove limited amounts of
the contents with a shovel or a measuring cup.
[0033] As is apparent from FIGS. 1 and 2, the package according to
the invention can be torn open in different ways. As shown in FIG.
3 where the package is shown in an empty and flattened condition,
the front and back panels 1 are each formed with a first weakened
tear line 8a and a second weakened tear line 8b each extending
between two edges and each formed by a perforation or a material
weakening by stamping and/or laser in the respective panel.
[0034] The first weakened tear line 8a as shown in FIG. 3 is mostly
arcuate and extends starting from the first side edge 2a upward and
inward to the upper edge 4. More particularly, the first tear line
8a has a lower section formed as a gentle arc extending upward from
the edge 2a to the line 8b and thence as a straight line
perpendicular to the line 8b to the upper edge 4. The second line
8b extends as a straight line between the side edges 2a and 2b and
parallel to the to the edge 4 and crosses the line 8a at an angle
of about 45.degree.. The tear line 8a could be straight instead of
arcuate or formed of several straight portions. If a portion of the
upper edge 4 of the bag or package is torn off along the first
weakened tear line 8a, this results in what is shown in FIG. 1,
that is the fold-out pour spout 13. If, in contrast, the entire
upper edge 4 is torn off along the second weakened tear line 8b,
this results in a bag or package as shown in FIG. 2.
[0035] The package with its front and back panels 1 and its side
gussets 5a and 5b can be formed from individual film sections or
from a continuous bag or package film by folding. If the package is
formed from individual film sections, they are connected to each
other by the longitudinal welds 9 that run along the side edges 2a
and 2b. In case of bag or packages formed by folding and heat
sealing, the longitudinal welds 9 advantageously give the package
greater stability.
[0036] In addition, it is also possible to form tear notches 10 or
cuts in the longitudinal welds 9 at one end of each of the
weakening lines 8a and 8b without affecting the tightness of the
package. Usually, the upper edge 4 is closed with a transverse weld
11 that is formed after filling the bag or package. Alternatively,
it is also conceivable that the filling takes place through the
bottom, in which case the bottom edges 3 are welded together after
filling.
[0037] According to FIG. 3, the second weakened tear line 8b
extends parallel to but spaced from the upper edge 4 in a straight
line from the tear notch 10 on the second side edge 2b across the
entire width of the front and back panels to the first side edge
2a. FIG. 3 shows the package in a side view in a flattened state.
To ensure a complete tearing process, the weakened tear lines 8a
and 8b extend not only in the two front and back panels 1 but also
in the side gussets 5a and 5b between them. In order to be able to
fold the first side gusset 5a according to FIG. 1 completely open
toward the outside, the first weakened tear line 8a extends at the
upper edge 4 up to a region between the two side gussets 5a and 5b
and in fact close to the centerline of the gusset 5a when it is
folded in.
[0038] In FIG. 3, the two weakened tear lines 8a and 8b cross so
that they take up a small amount of space. If the two weakened tear
lines 8a and 8b cross at a significant angle to each other, here
equal to at least 45.degree., it is unlikely that a tear along one
of them will propagate to the other. FIG. 3 further shows that, in
addition to the longitudinal welds 9 and the transverse weld 11,
welds 12 can be provided in the region of the tear notches 10,
extending beyond the region of the longitudinal welds 9 or the
transverse weld 11.
[0039] FIG. 4 shows a configuration with a comparable structure.
Here, however, the first tear line 8a starts from the edges 2a and
is initially coextensive with the tear line 8b, eventually turning
upward at a right angle to end at the upper edges 4 at the notch
10. The tear line 8b here, as in FIG. 3, extends straight across
the package on each panel 1 and in the gussets 5a and 5b. Thus a
small square piece can be torn out of the package starting at the
upper edge using the tear line 8a, or the entire top can be opened
using the tear line 8b and starting at the edge 2b.
[0040] Uncontrolled tearing open can be prevented in that according
to FIG. 5, the two weakened tear lines 8a and 8b are completely
separate and never cross each other. The straight tear line 8b
extending over the entire bag or package width is below the arcuate
tear line 8a.
* * * * *