U.S. patent application number 12/298344 was filed with the patent office on 2009-08-27 for packing bag.
Invention is credited to Daniel Bossel, Peter Kancsar.
Application Number | 20090214142 12/298344 |
Document ID | / |
Family ID | 36972769 |
Filed Date | 2009-08-27 |
United States Patent
Application |
20090214142 |
Kind Code |
A1 |
Bossel; Daniel ; et
al. |
August 27, 2009 |
PACKING BAG
Abstract
In a packing bag made of a flexible film-like first material
with, a substantially rectangular base which is formed as a
standing surface with longitudinal and side edges, the base
comprises a second material giving form-stability to the bag in the
area close to the base, and has a base fold line running in the
center and parallel to the two longitudinal edges and dividing the
base into two base parts which can be folded against each other,
and the longitudinal edges form side fold lines between the base
and substantially rectangular side walls arranged on two opposite
sides of the base, wherein the fold part which is constructed from
the base and the two side walls is glued to the bag.
Inventors: |
Bossel; Daniel;
(Schaffhausen, CH) ; Kancsar; Peter; (Zurich,
CH) |
Correspondence
Address: |
BANNER & WITCOFF, LTD.
TEN SOUTH WACKER DRIVE, SUITE 3000
CHICAGO
IL
60606
US
|
Family ID: |
36972769 |
Appl. No.: |
12/298344 |
Filed: |
May 8, 2007 |
PCT Filed: |
May 8, 2007 |
PCT NO: |
PCT/EP2007/004046 |
371 Date: |
February 6, 2009 |
Current U.S.
Class: |
383/204 ;
383/104; 383/109; 383/119; 383/211; 383/63 |
Current CPC
Class: |
B65D 2581/3437 20130101;
B65D 33/02 20130101; B65D 75/008 20130101; B65D 75/5805
20130101 |
Class at
Publication: |
383/204 ;
383/119; 383/211; 383/109; 383/104; 383/63 |
International
Class: |
B65D 33/00 20060101
B65D033/00; B65D 33/02 20060101 B65D033/02; B65D 30/08 20060101
B65D030/08; B65D 30/16 20060101 B65D030/16; B65D 33/16 20060101
B65D033/16 |
Foreign Application Data
Date |
Code |
Application Number |
May 12, 2006 |
EP |
06 405 205.3 |
Claims
1. Packing bag of a flexible film-like first material with a
substantially rectangular base formed as a standing surface with
two pairs of opposed edges, characterised in that the base
comprises a second material giving the bag form-stability in the
area close to the base, and has a base fold line running in the
centre between and parallel to one of the two pairs of edges and
dividing the base into two base parts which can be folded against
each other, and the one of the two pairs of edges form side fold
lines between the base and substantially rectangular side walls
which are arranged on two opposing sides of the base, wherein a
fold part which is formed from the base and the two side walls is
glued to the bag.
2. Packing bag according to claim 1, characterised in that the fold
part which is formed from the base and the two side walls in a
first position is substantially V-shaped in relation to a
theoretical section plane perpendicular to the fold lines and in a
second position the two base parts form the substantially flat base
as a standing surface and the two side walls project from the base,
wherein the fold part which is formed from the base and the two
side walls can be brought from the first position into the second
position by pressure on the base fold line connecting the two base
parts to form the substantially flat base.
3. Packing bag according to claim 2, characterised in that the side
fold lines are outwardly curved in relation to the base fold line
so that the fold part which is constructed from the base and the
two side walls assumes a stable form in the second position.
4. Packing bag according to claim 1, characterised in that the end
of the bag which is remote from the base can be separated along a
tear line lying substantially parallel to the standing surface of
the bag.
5. Packing bag according to claim 4, characterised in that the
separable end of the bag is covered by a reinforcement part.
6. Packing bag according to claim 1, characterised in that at the
end of the bag which is remote from the base is arranged an opening
and reclosing system selected from a group consisting of: a zip
closure and a peelable and reclosable closing strip of a contact
adhesive.
7. Packing bag according to claim 1, characterised in that the bag
material is a one-layer or multi-layer film of plastics, laminated
where applicable with a paper layer or aluminum film, or a paper
laminated with plastics.
8. Packing bag according to claim 1, characterised in that the fold
part which is constructed from the base and the two side walls is
selected from a group consisting of: cardboard, transparent
plastic, and opaque plastic.
9. Packing bag according to claim 1, characterised in that the fold
part which is constructed from the base and the two side walls is
attached to the packing bag by way of spot glue points.
10. Packing bag according to claim 1, characterised in that the bag
is one of a group consisting of: a standing bag, a hose bag and an
extruded bag.
11. A method comprising using a packing bag according to claim 1
for packing foodstuffs.
12. A method comprising using a packing bag according to claim 1
for packing fillings intended for heating in a microwave oven.
13. Packing bag according to claim 5, wherein the reinforcement
part comprises a material selected from a group consisting of:
cardboard, transparent plastic, and opaque plastic.
14. A packing bag comprising: a bag member formed of a flexible
first material; and a fold part connected to the bag member and
formed of a second material giving the bag form-stability in the
area close to the base, the fold part comprising a substantially
rectangular base and two substantially rectangular side walls
connected to opposed edges of the base, wherein the fold part has a
base fold line running along a center thereof, between and parallel
to the opposed edges of the base and dividing the base into two
base parts which can be folded against each other, and wherein the
opposed edges of the base form fold lines between the base and the
side walls.
Description
BACKGROUND
[0001] The invention concerns a packing bag of a flexible film-like
first material with a substantially rectangular base formed as a
standing surface with longitudinal and side edges.
[0002] As a standing pack for foodstuffs which are heated in a
microwave oven and served on a plate, rigid or form-stable
containers of plastics, normally made by 3D thermoforming or
injection moulding, with a tightly attached lid, and rigid bags
made of plastic laminate are known. Such packing containers and
bags, because of their greater need for material required to
achieve stability, are ecologically harmful and also relatively
expensive.
[0003] Dish containers with tightly attached lid have the
disadvantage that they are bulky and easily broken.
[0004] The invention is based on the object of providing a packing
for both dry products e.g. nuts or crisps, and for products with
liquid and solid elements or semi-solid products such as ready
meals to be heated in the microwave, which packing does not have or
only has to a lesser extent the disadvantages described above of
the packaging according to the prior art.
[0005] The object according to the invention is achieved in a
packing bag of the type cited initially in which the base comprises
a second material giving the bag form-stability in the area close
to the base, has a base fold line running in the centre between and
parallel to the two longitudinal or side edges and dividing the
base into two base parts which can be folded against each other,
and the longitudinal or side edges form side fold lines between the
base and two substantially rectangular side walls which are
arranged on two opposing sides of the base, wherein a fold part
which is formed from the base and the two side walls is glued to
the bag.
[0006] A substantial advantage of the packing bag according to the
invention lies firstly in the flat bag form in the first position
which is ideal for transport, and secondly in open state in the
form-stable dish shape ideal as a serving or cooking dish in the
second position.
[0007] In a suitable embodiment of the packing bag according to the
invention, the fold part which is formed from the base and the two
side walls in a first position is substantially V-shaped in
relation to a theoretical section plane running perpendicular to
the fold lines. In a second position the two base parts form a
substantially flat base as a standing surface and the two side
walls protrude from the base. The fold part constructed from the
base and the two side walls can be brought from the first position
into the second position by pressure on the fold edges connecting
the two base parts to form the substantially flat base.
[0008] In a special embodiment of the fold part the side fold lines
are outwardly curved in relation to the base fold line so that the
fold part which is constructed from the base and the two side walls
assumes a stable form in the second position.
[0009] The end of the bag which is remote from the base can be
separated preferably along a tear line lying substantially parallel
to the standing surface of the bag.
[0010] The packing bag itself can be a standing bag without
inherent standing stability, a hose bag or an extruded bag. The bag
material for the packing bag according to the invention, in
comparison with the rigid material required for a standing bag with
inherent standing stability, can have a lesser thickness and is
consequently cheaper.
[0011] The bag material of the packing bag according to the
invention is preferably a one-layer or multi-layer film made of
plastics, where applicable laminated with a paper layer or aluminum
film, or a paper laminated with plastics.
[0012] The material for the fold part and the reinforcement part
can be any low cost material. A preferred material is cardboard or
a transparent or opaque plastic.
[0013] The packing bag is particularly suitable for packing
foodstuffs, in particular spoonable fillings. A further preferred
area of application is the packing of fillings which are intended
for heating in a microwave oven.
[0014] The meals e.g. ready meals can be heated directly in a
microwave in the packing bag according to the invention in the open
state. The advantage of the packing bag according to the invention
lies here in the heat-insulating design of the area of the bag near
the base due to the fold part, which allows holding with bare
hands. Certain meals in the open bag can for example also be heated
in a water bath. For ready meals, the open bag can serve directly
as a cooking dish.
[0015] Further advantages, features and details of the invention
arise from the description below of preferred embodiment examples
and with reference to the drawings which show diagrammatically:
[0016] FIG. 1 a perspective view of a packing bag in a first
position;
[0017] FIG. 2 a perspective view of the open packing bag of FIG. 1
in a second position;
[0018] FIG. 3 a top view of a fold part constructed from base and
side walls with curved side fold lines;
[0019] FIG. 4 the side view of the fold part of FIG. 3 after
folding the side walls into the second position;
[0020] FIG. 5 the top view of the fold part in FIG. 4;
[0021] FIG. 6 the side view of the fold part in FIG. 4 rotated
through 90.degree.;
[0022] FIG. 7 a front view of the opening part of a packing bag
with a first variant of a reclosable opening;
[0023] FIG. 8 a section through the bag in FIG. 7 on line I-I;
[0024] FIG. 9 a front view of the opening part of a packing bag
with a second variant of a closable opening;
[0025] FIG. 10 a section through the bag in FIG. 9 on line
II-II.
[0026] A packing bag 10 is shown in FIGS. 1 and 2 in the form of a
standing bag and comprising a flexible film material e.g.
polyamide, has a sealed bag base 12, a front wall 14 and a rear
wall 16. Front wall 14 and rear wall 16 are connected in the known
manner by way of lateral longitudinal sealed seams 18, 19 and
together with a transverse sealing seam 20 which is arranged at the
end of the bag 10 remote from the base, form a closed packing bag
10.
[0027] The transverse sealing seam 20 at the end of the packing bag
10 remote from the base is part of a bag part 24 which can be
separated from the bag and is covered by a V-shaped reinforcement
part 22. The reinforcement part 22 is equipped with a through slot
26 for suspending the bag 10. To open the packing bag 10, the
separable bag part 24 together with the reinforcement part 22 is
torn away along a tear line 28 which is arranged parallel to the
bag walls 14, 16 at a short distance from the transverse sealing
seam 20. As a tear aid, tear notches are provided in the
longitudinal sealing seams 18, 19 with a tip ending on the tear
line 28.
[0028] In the area of the bag 10 close to the base is a fold part
30 extending from the bag front wall 14 to the rear wall 16 and
reinforcing the bag base 12, comprising a substantially form-stable
material e.g. cardboard, plastics, another suitable material or a
laminate of the said materials and where applicable further
materials. The fold part 30 can be arranged on the bag base 12
inside the bag or surrounding the bag base 12 from the outside.
[0029] The fold part 30 comprises a rectangular base 32 with
longitudinal edges 34, 35 and side edges 36, 37. A base fold line a
running in the centre between and parallel to the two longitudinal
edges 34, 35 divides the base 32 into two base parts 38, 40 which
can be folded against each other. The longitudinal edges 34, 35 of
the base 32 form side fold lines b, c between the base 32 and
substantially rectangular side walls 42, 44 which are arranged on
two opposing sides of the base 32.
[0030] The fold part 30 which is constructed from the base 32 and
the two side walls 42, 44 can as stated above be arranged both
inside the bag or on its outside and is at least partly attached to
the bag inside or outside respectively by gluing, sealing and
similar connection methods. The fixing to the bag walls 14, 16
takes place e.g. partially by way of spot glue or seal points.
[0031] It is clear from FIG. 1 that the fold part 30 which is
constructed from the base 32 and the two side walls 42, 44 in a
first position is substantially V-shaped in relation to a
theoretical section plane extending perpendicular to the fold lines
a, b, c. In a second position shown in FIG. 2 the two base parts
38, 40 form the substantially flat base 32 as a standing surface
and the two side walls 42, 44 protrude substantially vertically
from the base. The fold part 30 which is formed from the base 32
and the two side walls 42, 44 is brought from the first position
into the second position by pressure from the outside on the base
fold edge or line a connecting the two base parts 38, 40 to form
the substantially flat base 32. Conversion of the fold part 30,
which is substantially V-shaped in the first position, to the
second position with flat base 32 and side walls 42, 44 protruding
therefrom, occurs automatically on standing the bag 10 in its
upright position.
[0032] The base 32 serves as a standing surface so that the packing
bag 10 itself need not be formed stand-stable. The packing bag 10
can therefore also be a simple hose bag with a longitudinal seam or
an extruded bag without longitudinal seam, and two side seams.
[0033] It is evident from FIG. 2 that, after opening, the bag 10
together with the specially designed fold part 30 forms a dish with
a substantially rectangular base. Depending on bag content, the
dish which is formed can serve as a serving dish for e.g. nuts or
crisps, or as a cooking dish suitable for microwave oven for e.g.
ready meals.
[0034] In the fold part 30 which is shown in FIG. 3 the side fold
lines b, c are outwardly curved in relation to the base fold line a
so that the fold part 30 which is formed from the base 32 and the
two side walls 42, 44 assumes a stable form in the second position
shown in FIGS. 4 to 6.
[0035] As shown in FIGS. 4 to 6, the side walls 42, 44 in the
second position of the fold part 30 form convex curved surfaces,
and the base 32 shortly before reaching the second position
spontaneously falls into a form-stable, concave curved end
position.
[0036] FIGS. 7 to 10 show example embodiments of packing bags with
a reclosable opening part.
[0037] In a first variant shown in FIGS. 7 and 8, to open the
packing bag 10 the bag part with transverse sealing seam 20 is torn
away along a tear line 28 arranged in the bag walls 14, 16 parallel
to and at a short distance from the transverse sealing seam 20. As
a tear aid, tear notches 46 are provided in the longitudinal
sealing seams 18, 19 with tip ending on the tear line 28.
[0038] At a further distance from the transverse sealing seam 20
and the tear line 28, arranged parallel to the transverse sealing
seam 20 at the bag walls 14, 16 are arranged corresponding parts of
a zip closure 48, 49. After the bag has been opened by tearing away
the bag part with the transverse sealing seam 20 along the tear
line 28, the bag can be reopened and closed using the zip closure
48, 49.
[0039] In a second variant shown in FIGS. 9 and 10, to open the
packing bag 10 again first the bag part with the transverse sealing
seam 20 is torn away along a tear line 28 which is arranged in the
bag walls 14, 16 parallel to and at a short distance from the
transverse sealing seam 20. As tear aids, tear notches 46 are
provided in the longitudinal sealing seams 18, 19 with tip ending
on the tear line 28.
[0040] At a further distance from the transverse sealing seam 20
and tear line 28 is arranged a peelable and reclosable closure
strip 50 connecting the two bag walls 14, 16 by means of a contact
adhesive. After the bag has been opened by tearing away the bag
part with the transverse sealing seam 20 along the tear line 28,
the bag can be repeatedly opened and reclosed by means of the
closure strip 50. To facilitate opening, the closure strip 50 is
formed rising in an arrow shape from the longitudinal sealing seams
18, 19 towards the transverse sealing seam 20. In this way the
force required for opening is concentrated in the centre of the
sealing strip 50 and separation of the sealing strip 50 takes place
continuously from the middle of the bag towards the two
longitudinal sealing edges 18, 19.
[0041] The opening and reclosing systems shown in the drawing are
simply a small selection of a multiplicity of possibilities for
reclosable opening of a bag. The scope of protection of the packing
bag according to the invention is not restricted to the embodiment
example shown in the drawing but extends rather to packing bags
with any arbitrary opening and where applicable reclosing
systems.
* * * * *