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Патент USA US3040644

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June 26,
3,040,633
J_ s_ DAVIS
METHOD OF MAKING HANDLED CARRYING BAGS
Filed March 5. 1958
J”
WEB
A
,
/6
TUB/1V6‘
SECOND
INVENTOR.
JOHN J’. 0,4 V/S'
BY
3,94%,533
atent
Patentecl June 26, 1962.
1
2
3,048,633
.
METHGD 0F ll/IAKING HANDLED CARRYING
‘
BAGS
at bag length intervals and in an area adapted to underlie
the cord handles. The ends of these slits have curved
end portions. After the handles are attached to the web
and the web tubed a transverse perforated line is pro
John S. Davis, Scarborough, N.Y., assignor to Equitable
Paper Bag (30., Inc., Long Island City, N.Y., a corpora 5 vided on the web at bag lengths.- This perforated line
tion of New York
Filed Mar. 3, 1958, Ser. No. 718,620
3 Claims. ((31. 93-35)
extends from each edge of the web and registers with the
curved ends of the slits. The tubed web is separated into
bag lengths by tensioning the web at the transverse lines
of perforations. Since the slits and their curved end por
tions are continuous the perforated line may register with
the slits at any point along theircurved end portions
without creating any tear points or weakening the bag in
This invention relates to new and useful improvements
in handled carrying bags and to a method for making
them, and is particularly concerned with paper bags of
the type normally given away by retail merchants to
their customers and which, therefore, must be produced
which is stronger and more attractive than bags made by
as inexpensively as is commensurate with providing an
present methods.
attractive and strong bag equipped with carrying handles.
ing bags either by applying the handles to the paper web
For a better understanding of the present inventionas
Well as further objects and features thereof reference is
made to the following detailed description to be read in
before it is tubed and before the paper Web is separated
conjunction with the accompanying drawings wherein like
It is the present practice to make handled paper carry
any manner.
In this manner a bag may be produced
.
’
into bag lengths, or else by stapling or pasting the handles 20 components in the several views are identi?ed by like ref
to the web after the bag is made. If the handles have
erence numerals.
‘
1
In the drawings: ‘
been applied to the web before tubing, the bag is then
tubed such that the handles are superimposed on each
FIGURE 1 is a ?ow diagram illustrating the'steps of
other and the Web is then separated into bag lengths. One
the method of-this invention.
method utilized to separate the tubed paper web into bag 25
FIGURE 2 is a perspective view of the resulting im
lengths is to form a transverse perforated line in the web
proved handled carry bag of this invention, and
at bag length intervals before the handles are applied to
FIGURE 3 is an elevation view of the top edge struc
the web. After the handles have been applied and the
ture of the improved bag illustrated inFIGURE 2.
Web tubed, the tubed web is-separated into bag lengths
Referring now to the drawings,v the paper bag web
by tensioning the tubed web at the transverse lines of 30 which is denoted generally by the numeral 10‘ is of suffi
perforations. This method of separating the tubed web
ciently heavy paper for the purpose demanded of a carry~
into bag lengths has the disadvantage of weakening the
ing bag of conventional size, and is wide enough to per
paper web while it is passing through the bag making
mit it to be folded longitudinally along fold line 11 such
machine and consequently any undue tension on the web
will cause it to separate at these lines of perforations re
sulting in a temporary shut down of the machine.
Another method utilized to separate the tubed web
into bag lengths is to form slits in the paper web at bag
that the outside edges 12 can overlap su?iciently to pro
vide an adequately strong seam when the overlapped por
tions are adhesively secured together.
length intervals before the handles are applied to the web.
The area of the web which will ultimately be under the
handles is provided with two longitudinal slits and a trans
verse slit interconnecting the“ two longitudinal slits. After
the handles are applied and the web tubed, the tubed web
is separated into bag lengths by a cut o? knife which
In forming a handled carrying bag in accordance with
vthe method of the present invention the bag web 10 is
?rst provided with transverse slits- 13 having curved end
portions 14. These slits are formed at bag length inter
vals and on an area of the paper web 10 which is adapted
to underlie the legs 15 of carrying handles 16. As illus
trated in FIGURE 1', two transverse slits are provided
at each bag length, a slit being provided for each handle
registers with the longitudinal slits instead of cutting trans 45 16. The length of the slits 13 are preferably greater than
versely across the entire width of the tubed web. This
the distance between the legs 15 of the handles 16. In
is necessary so that the handles will remain projecting
this manner when the handles 16 are positioned on the
from the cut edge instead of being cut off from the web
paper web 10 with the legs 15 overlapping the slits 13
with thetube length. This method has the advantage
the curved ends 14 are exposed and outside the area en
of providing a stronger Web as it passes through the bag
50 closed by the legs 15. The purpose for this will be pres
making machine, but has the disadvantage that if the
knife making the transverse cut is misaligned such as to
out beyond the longitudinal slits a tear point is created
with a consequent weakening of the bag. Further, if the
longitudinal cut extends beyond the transverse cut, there
is a tear point created along the longitudinal slit remain
ing in the top of the bag. In order to minimize the crea
tion of weak spots with this method, it is necessary that
the ends of the longitudinal cuts ‘coincide with the ends
ently described. The bag length intervals should be of
such length thatenough material is provided to be folded
and adhesively secured together to provide a bottom for
the bag.
I
-
After the slits 13 with their curved end portions 1d have
been formed in the paper Web 10 the next step in the
method of this invention is to secure the handles 16 to the
web 10. As illustrated in FIGURE 1, the leg portions 15
of the handles 16 are adhesively secured to the, paper web
of the transverse cut. In addition, this method results in
10 by patch webs 17. The patch webs 17 are positioned
60
a bag that is unattractive.
on the paper web 10 spaced from the slits 13 and the ends
In view of the foregoing, it is the primary object of the
14 so'as not to interfere with the separation of the tubed
present invention to provide an improved handled carry
web into bag lengths as will be presently described. The
ing bag and a method for making them which overcomes
top portions of the handles 16 extend above the slits 13
the disadvantages of ‘prior art bags of this type and the
and form the portion of the handle which will extend be
method of making them.
‘
More speci?cally it is an object of this invention to
provide an improved handled carrying bag and a method
65 yond the top of the resulting bag. After the handles 16
have been secured to the paper Web 10 the web may be ~
tubed in a manner well known to those skilled in the art.
of making them which produces attractive and stronger
bags without any tear points.
It is to be noted that after the paper web hasbeen tubed
objects by providing the paper bag with transverse slits
In order to separate the tubed web into bag lengths trans
the slits 13 and ends 14, as well as the handles 16 are
Brie?y stated, the present invention accomplishes these 7O substantially in registration. '
3,040,633
4;
3
the web while the other side is supported by a rubber roll
verse lines of perforations'ls are formed on the tubed web
at bag length intervals. This perforate line 18 extends
from the edges of the tubed web 10 and registers with the
curved end portions 14 of the slits 13. The perforate line .
18 must be ‘of such a length as to register with the curved
portions 14 of the slits 13, but in the preferred form of
the invention the perforate line 18 extends beyond the
curved portions 14 such that at the point of intersection of
the curved portion 14 with the perforate line 18 the paper
er. The manner of accomplishing this is well known to
those skilled in the art.
‘
It is to be noted that although the bar or knife utilized
to form the perforate line 18 may be misaligned such that
the point of intersection with the curved portions 14 varies,
no tear points or weakening of the web occurs.
This is
dueto the fact that the slits Y13 and their curved end por
tions '14 are continuous and formed in one operation.
The ?nished bag resulting from the method described
bag is weakened for a purpose to be presently described. 10
above may be produced inexpensively. This is due to the
It is to be noted that since the curved ends 14 of the slits 13
adaptability of this method to ‘high speed bag making
' are outside the area of the web 10 enclosed by the legs 15
of the handles 16 the transverse lines of perforations 18
may register with the curved ends 14, or extend slightly
beyond, without contacting the legs 15 of the handles 16.
It is, to be understood that although the perforate lines
18 are preferably formed after the handles 16 have been
machinery. Further the resulting bag, illustrated in FIG
‘ URE 2, has soft upper edges which cannot cut the user and
is therefore more satisfactory in use. In addition, the re
sulting product has a more pleasing appearance and greater
strength than heretofore known bags.
The preferred embodiment of the invention has been il
lustrated and described, but changes and modi?cations can
be made and some features may be used in different com
binations without departing from the invention as defined
Although this method is not illustrated in the drawings it ,
in the claims.
will be apparent to those skilled in the art how this can be
accomplished with a discontinuous perforating bar.
I claim:
1. ‘In the manufacture of paper bags, having two pro
After the bag Web 10 has been provided with the trans
verse lines of perforations 18 the tubed Web is separated 25 jecting handles, by the process of forming transverse lines
into bag lengths. . This is accomplished'by tensioning the
of partial web severance in a bag web at the locations of
both handles and prior to the attachment of the handles
tubed web at the transverse lines of perforations 18, there
by separating the tubed web into bag lengths along the
thereto which project across these lines and, after said
attachment, completing the severance of the web across its
perforate lines '18, the curved ends 14 and the slits '13. _
When the tubed web has been separated into bag lengths 30 width along other transverse lines to sever the web into
bag lengths with the handles projecting from the bag top
the top portion of the handles 16 project from the upper
ends of these lengths; the improvement which comprises
end of the bag lengths as illustrated in FIGURE 3. The
applied to the paper web 10 and the web tubed, the per
forate line 18 may be formed as well after the handles 16
are secured to the web '10 but before the tubing operation.
bottom of each bag length is formed in a conventional ,
manner well known to those skilled in the art.
forming the ?rst transverse lines of severance with end
portions at both ends of each of said ?rst transverse lines,
The method of this invention is particularly adaptable. 35 beyond both sides of its associated handle, extending in
to producing handled carrying bags on modern high speed
directions having longitudinal components in the direc
bag making machines. The rounded end portions 14 of
tion of the top ends of the bags, and locating said other
the slits 13 serve to distribute the forces attendant to the
tensioning step evenly over a substantial area of the web
10.
Since there are, no sharp corners where stresses would
be concentrated during the tensioning step, that step may
be accomplished without tearing of the web ‘when the bag.
lengths are separated. In addition the points where
transverse lines in positions out of transverse alignment
with the end portions of both of said ?rst transverse lines
but in positions to intersect portions of the ?rst transverse
lines which have said longitudinal components and at lo
cations beyond the sides of the handles and below the
extreme upper ends of said end portions so that the bag
lengths are severed without longitudinal tears of the top
stresses are the highest, such, for example, as the inter
section of the perforate line 18 with the curved portions 45 edges of said bag lengths regardless of manufacturing
14, which is designated generally by the numeral 19, are
tolerances in the relative ‘locations of the ?rst transverse
the weakest across the web. Thus, when the Web is ten
lines and said other transverse lines lengthwise of said
sioned, failure will occur at those points first. so‘ that there.
is no opportunity for the tensioningstress to cause tearing
I 2. The method described in claim 1 and in which each
web.
of the web.
,
.
By forming the separation lines in two steps, rather than
making a single transverse line of perforations, the web is
substantialy stronger during the handle and patch applying
steps. This is true since the formation of the slits 13 with
their curved end portions 14 does not materially reduce the
strength of the web. Thus, should the web be subject to
anything other than extremely severe tensioning forces
prior to the time the perforate lines 18 are produced, such,
for example, as by improper operation of the bag making _
machine or during the handle and patch applying steps, the 60
web will not separate.
.
.
handle is secured to the web at ‘a location ‘spaced some
distance below any part of the ?rst transverse line across
which the handle projects.
3. The method described in claim 1 and in which both
of the ?rst transverse lines are straight along at least a
portion of the ‘length of said ?rst transverse lines and the
other transverse lines are ‘at locations along the length
of the web longitudinally spaced from the straight por
tions of the ?rst transverse lines.
References Cited in the ?le of this patent
' The perforations forming the perforate lines 18 are
preferably spaced close enough together so that the ten
sioning and separating step may be accomplished without
the application of high stresses. Such perforations may
be formed in any suitable manner which will reduce the 65
strength of the web suf?ciently, it being preferable to use
notched knife blades which strike the web on one side of
.
UNITED STATES PATENTS
1,910,449
2,060,451
2,062,617
2,346,710
2,586,514
Rose’ ________________ __ May ‘23,
Steen ________________ __ Nov. 10,
Steen ________________ __ Dec. 1,
Steen ________________ __ Apr. 18,
Canno _______________ __ Feb. 19,
_
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