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Патент USA US3099394

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July 30, 1963
_
R, o. BAXTER
3,099,384
BAG CLOSURE
Filed Jan. 25, 1962
INVENTOR.
ROBERT 0. BAXTER
ATTOR NE Y
United States Patent 0
fr'
1C@
Patented July 30, 1963
2
1
2 also shows tape 22 which serves both to reinforce the
seam made by thread 20 and wire 21 as the result of its
3,099,384
BAG CLOSURE
Robert 0. Baxter, Camden, Ark., assignor to International
Paper Company, New York, N.Y., a corporation of
New York
disposition between wire 21 and the tube wall and to
envelop the end of tube 10.
FIGURE 3 depicts stitched bag tube ¿10` erected and
open on its lower end, but with its upper end not fully
Filed Jan. 23, 1962, Ser. No. 168,047
4 Claims. (Cl. 229-62)
closed. The erection, which is accomplished manually
or mechanically, entails bringing the panels lying between
scores 12 and y14 and scores 13 and 1'5, respectively, into
The present invention relates to the manufacture of
bags or bag-like containers. More particularly, it relates 10 a parallel relation and bringing tape 22 and the panel be
tween the end of tube -10 and score 17 into a generally
to novel closures for single and multi-wall bags and simi
parallel relation to the panel lying between scores 12a
lar receptacles made from paper, paperboard, and com
and 13a.
FIGURE 4 shows the next stage of the closure of the
It is well known to provide bags of the open mouth or
valve varieties with closures by means of a sewing or 15 upper end of stitched bag tube >10 wherein the triangular
flaps partially defined by scores i12a and 18 and scores
stitching operation. Such bags do not ordinarily have
13a and 19 respectively, are raised out of the horizontal
liat bottoms on their ends equipped with such closures,
plane
and brought toward each other with the ultimate
but it is known, as illustrated by U.S. Pat. =No. 1,624,626,
parable materials.
objective of being disposed substantially parallel to the
to give bags a Áfiat bottom, as well as a rectangular or
square cross-section, and to provide a closure on such a 20 rectangular panel lying between foldlines 12a and 13a.
FIGURE 5 shows the completion of the closure of the
upper end of stitched bag tube 10 wherein the triangular
liaps partially defined by score lines 12a and 18 and score
are particularly practical where it is desirable to give the
lines I13a and 19, respectively, are made to lie against the
products contained in such bags the hexahedronal con
figuration which lends itself to a close storage of a number 25 rectangular panel partially defined by score lines ì12al and
13a and wherein the end of thread 20', wire 21, and tape
of such bagged products ‘and Where itis desirable that the
22-which, at the outset, are made to extend beyond score
bags, before, during, Iand after they are filled, have some
lines 14 and 1‘5 of iiattened tube 10-initially overlap and
capacity for holding themselves and, perhaps, what they
ñnally are manually or otherwise twisted about each
contain erect. Typical products in this regard are asphalt
bottom with stitching.
Bags having flat bottoms and rectangular cross-sections
and rosin which are usually loaded into containers there 30 other at least once or interconnected by other means.
Once such twisting is completed, the fully closed upper end
for in a heated, highly viscous state and which then cool
of stitched bag tube 110 is prepared to serve as a bag bot
and harden to take the shape of such containers. But
tom which is not only iiat, but also unexpectedly rigid
such bags require a certain degree of rigidity to mold the
products they contain into the desired shape and to stand
and, therefore, especially suited to hold the bag erect.
in accordance with the present invention from the bag
tube of FIGURE l;
FIGURE 3 shows a plan View of the bag of FIGURE
interlaced with the stitching means.
2. In a paperboard bag adapted by means of a release
There are additional advantages in employing the bag
erect and it has now been found that, surprisingly, the 35
closure
means of the present invention, particularly in
use of relatively iiexible materials, such as paper and
the bag reflected in the attached drawings. They are
paperboard, can be continued in the manufacture of such
safe, because the Wire ends are always partially sheathed
bags if the bag closures of the present invention are in
and made visible by the coextensive tape ends. They are
corporated in the bags and, preferably, inthe bag bottoms.
The bag closures of the present invention comprise a 40 simple to employ, because the bulk of the tape ends
diminishes the number of twists of the »wire ends one
stitched seam securing portions of the bag tube together
must make to obtain a bag end fastening. And they pro
and a metallic wire Iinterlaced with the seam. `In the pre
vide more than just a bag end closure or fastening, since
ferred embodiment, they also include a seam reinforcing
they are wholly adapted to serve as a handle for the bag
means, such as a tape, and a binding together or coupling
of the ends of the wire directly or with the assistance of 45 once its other end is closed.
What is claimed is:
further fastening means.
l. In a paperboard bag adapted by means of a release
For a better understanding of the present invention,
coating on its interior toy contain highly viscous products
reference should be had to the attached drawings in which
and having a iiat bottom defined therein by means of
FIGURE l shows Áa side view of a liattened bag tube;
FIGURE 2 shows a side view of a íiattened bag made 50 scores, a bottom closure comprising thread stitching means
across one end of a iiattened bag tube and a metallic wire
coating on its interior to contain highly viscous products
FIGURE 4 shows an isometric View of the erected bag 55 and having a iiat bottom deiined therein by means of
of 'FIGURE 3 when partially closed; and,
scores, a bottom closure comprising thread stitching
FIGURE 5 shows a plan view of the erected bag of
means across one end of a ’flattened bag tube, a metallic
FIGURE 3 when fully closed.
Wire interlaced with the stitching means, and paper tape
FIGURE l depicts a bag tube 10 made from, for
60 reinforcing means disposed between the tube and the wire.
instance, kraft paperboard having a release coating on
3. In a paperboard bag adapted by means of a release
its interior and having a vertical seam 11 which is glued,
coating on its interior to contain highly viscous products
pasted, or the like; vertical score lines 1‘2, 12a, 13, 13a, 14,
and having a liat bottom defined therein- by means of
and 15; horizontal score lines 16 and 17; and, diagonal
scores, a bottom closure comprising thread stitching
2 when erected;
score lines "1S and 1'9.
65 means across one end of a flattened bag tube, a metallic
FIGURE 2 depicts bag tube 10 with a seam stitched
wire interlaced with the stitching means, and paper tape
along and across its upper end in which thread 20 and
reinforcing means disposed between the tube and the wire
metallic wire 21 .are interlaced. Thread 20 passes back
wherein the stitching means, the wire, and the reinforcing
and forth through the two walls of tube 10 and above
means extend beyond the sides of the tube.
and below wire 2\1 as it lies along and exterior to one of 70
4. In a paperboard bag adapted by means of a release
such walls and between and generally parallel to the end
of tube 10 and score or foldline 17 thereon.
lFIGURE
coating on its interior to contain highly .viscous products
3
3,099,384
and having a lfiat bottom defined therein by means of
scores, a bottom closure comprising thread stitching
means, a metallic Wire interlaced with the stitching means,
and paper tape .reinforcing means disposed between the
tube and the Wire wherein the stitching means, the Wire,
and the reinforcing means extend beyond the sides of the
tube and are coupled at their ends inthe erected bag.
4
References Cited in the ñie of this patent
UNITED STATES PATENTS
`835,455
1,522,485
1,624,626
Mortensen __________ __ Nov. 6, 1906
Bates ______________ __ Jan. 13, 1925
`Robinson ____________ __ Apr. 12, 1927
1,752,292
Bates et al. __________ __ Apr. 1, 1930
1,913,825
Baker _______________ __ June 13, 1933
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