U.S. patent application number 09/799765 was filed with the patent office on 2002-04-18 for machine to line containers with film.
Invention is credited to Mader, Durell Thomas.
Application Number | 20020043555 09/799765 |
Document ID | / |
Family ID | 26885920 |
Filed Date | 2002-04-18 |
United States Patent
Application |
20020043555 |
Kind Code |
A1 |
Mader, Durell Thomas |
April 18, 2002 |
Machine to line containers with film
Abstract
A paper container to hold liquids or solid material of light and
heavy viscosity. Said container has an inner film liner, but not
limited to, which conforms to the configuration of an outer
container, and is secured to the open end, the side wall, and
bottom of said outer container. The shape of the outer container
may be, but not limited to, round,square or rectangular. A process
to automatically insert a plastic film liner into said outer
container, regardless of the shape of said outer container, with
the use of heat and vacuum, thus creating a container that is
leak-proof and environmentally friendly, compared to other
containers on the market.
Inventors: |
Mader, Durell Thomas; (East
Stroudsburg, PA) |
Correspondence
Address: |
Durell Thomas Mader
333 Greentree Drive, Apartment B-15
P. O. Box 28
East Stroudsburg
PA
18301
US
|
Family ID: |
26885920 |
Appl. No.: |
09/799765 |
Filed: |
December 30, 2000 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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60190260 |
Mar 17, 2000 |
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Current U.S.
Class: |
229/400 ;
229/4.5; 229/5.81 |
Current CPC
Class: |
B65D 3/22 20130101; B31B
2120/404 20170801; B65D 3/14 20130101; B65D 3/06 20130101; B31B
2105/00 20170801; B65D 3/04 20130101; B65D 2581/3437 20130101; B65D
3/18 20130101; B65D 3/12 20130101 |
Class at
Publication: |
229/400 ;
229/5.81; 229/4.5 |
International
Class: |
B65D 003/22; B65D
005/56 |
Claims
1. An outer paper container having a bottom and side walls with an
open top. An inner film liner secured to said bottom, side wall and
rim of said outer paper container. The said container may be of any
shape, but not limited to,typically round, square or
rectangular.
2. A process that installs said film liner into said outer
container through the use of heat and vacuum.
3. Container can be sealed to ensure that if said container outer
shell is crushed, the contents of the said container will remain
enclosed in the inner liner.
4. The contents can be used in a microwave oven under a heated
situation, or as storage in a freezer or refrigerator under cold
conditions.
5. Film is non-toxic to the environment, and the outer shell can be
of recyclable material without affecting the content of the
container. The said film liner becomes an integral part of the
interior of said paper container, and the film adheres to the
paper, making it leak-proof.
Description
BACKGROUND PRIOR ART
[0001] Patents for composite contasiners have been issued since
1920. These containers consist of an outer container that provides
structural strength for an inner liner that is normally a flexible
type material that may be easily installed inside the outer
container. An example of this is disclosed in U.S. Pat. No.
4,466,553. However, the liner in the above patent does not adhere
to the outer container, leaving s space between the liner and the
outer container. In the packaging or canning of vegetable products,
it has been customery to provide a rigid metal container that is
corrugated around the cylindrical peripheral intermediate portion
to provide rigidity for the container. This featurs allows it to
withstand crush pressures as well as resisting collapsing during
various phases of packaging and processing of the product
therein.
[0002] Conventionally, in the packaging of sanitary food products,
the metal container must be internally lined to prevent any
contamination of the product during processing and storage prior to
ultimate use. In the transportation of various articles, many times
the articles are stacked in numerous cases upon each other which
means that the lower container must be capable of resisting
substantial crush pressure from the remaining containers supporterd
thereon. It is also possible for the containers to be dropped, and
must withstand the forces encountered without collapsing.
[0003] Numerous attempts have been made to substitute various types
of less expensive and less rigid packages, particularly for food
products and an example that has been dealt with for a number of
years is what is refered to as a "retort" pouch. In order to meet
the various government requirements, the typical pouch construction
consists of a layer of polypropylene attached through an adhesive
to an aluminum foil layer with a further polyester layer,
adhesively secured to the opposite sides of the foil. The aluminum
foil provides oxygen barrier resistance that is required for
packaging such products, while the polypropylene is used to provide
chemical inertness for the product and the polyester layer produces
the necessary mechanical strength for the pouch.
[0004] One of the main problems with a pouch of this type, when
used for packaging food products is the fact that the relatively
flexible package slows the filling speeds of the filling line and
therefore increases the cost thereof For example, pouches of this
type reqwuire a special system that will provide a mechanical
support for the pouch during the heating or processing operation
for the contents.
[0005] A further problem that has been encountered with the pouch
type package is the fact that the pouch does not have sufficient
rigidity to be self-supporting without collapsing during shipment
and display. Thus most pouches that are utilized for packaging
particularly food products are of necessity placed in an outer
cardboard or other carton for shipment or display purposes, adding
to the overall cost of the package.
[0006] The art of normal paper container production consists of the
following steps:
[0007] 1. Paper for the side wall is sprayed with Polyethylene or
wax, blanked to size, and fed into a cone shaped mandrel on an
assembly machine.
[0008] 2. Paper for the bottom is sprayed with Polyethylene or wax,
blanked to the proper size, shaped and attached by vacuum to a
mandrel
[0009] 3. These parts are joined as the rotary indexing dials
align. The bottom is blown or sucked onto the mandrel holding the
side wall. The side seam, whose ends overlap is ultrasonically
sealed as well as the bottom to the side wall.
[0010] 4. The side wall is pushed into the bottom to secure a
bottom seal. See FIG. 1, Patent drawing 1.
[0011] 5. The top curl is formed on the cup by engaging a heated
die set, which permits the curl to be formed.
[0012] In the above steps(1 through 4) it is self-evident that
flaws exist with the procedure. such as:
[0013] 1. The side wall must be perfectly aligned with its cone
shaped mandrel, lest it does not properly align with the
bottom.
[0014] 2. The bottom must be perfectly aligned on its mandrel, lest
it does not properly align with the side wall.
[0015] 3. If the side wall is erroneously located on its mandrel,
the side seam will not be perfectly formed and will not attach
properly to the bottom.
[0016] 4. Any flaw (hole) in either the side wall blank or bottom
blank will cause the container to leak.
[0017] However, unless protected by Sensors, the container may
still be produced with its flaws. All the above conditions, if not
properly met will cause leaking at the side seam or bottom,
possibly inflicting personal injury. The present invention does not
depend on any of the above conditions. The lining of the containers
will prevent any leaks to occur, as the lining is attached to the
container after the container is formed. The lining is sealed to
both the side wall and the bottom, regardless of any flaws to the
outer container, and it will hold any ingredients, whether hot or
cold. The container supporting the liner is used for structural
integrity only.
SUMMARY OF THE INVENTION
[0018] According to the present invention, a container has been
developed which has less structural requirements than a
conventional metal can without sacrificing rigidity such as occur
when using flexible contaiers.
[0019] The container of the present invention comprises a composite
container construction including an outer container that has a
bottom wall and a side wall that corresponds substantially in
configuration to the outer container and has an open top for
receiving a product.
[0020] The inner and outer containers are sealed to each other
completely from top to bottom. The outer container provides
structural rigidity to meet stacking and abuse resistance
requirements. Air trapped between the inner and outer containers is
removed, before sealing, by the introduction of heat and
vacuum.
[0021] In one embodiment of the present invention, the container is
not detrimentally affected by microwave nor freezing temperatures.
The lining, being non-toxic is acceptable for food service.
[0022] In another embodiment of the present invention, the Moisture
Vapor Transfer Rate has been reduced to acceptable levels for any
particular product.
[0023] It should be pointed out that all embodiments, the term film
is intended to encompass a single sheet, or a composite structure
such as a laminated sheet.
[0024] While this invention is susceptible of embodiment in many
different forms, it must be understood that the present disclosure
is to be considered as an examplification of the principles of the
invention and is not intended to limit the invention to the
embodiments illustrated.
BRIEF DESCRIPTION OF SEVERAL VIEWS OF DRAWINGS
[0025] FIG. 1 is an exploded perspective view partially in section
showing a container constructed in accordance with the the present
invention.
[0026] FIG. 2 is a view similar to FIG. 1 showing a modified form
of the invention.
[0027] FIG. 3 is an exploded perspective view, partially in section
showing a modified form of the invention.
[0028] FIG. 4 is an exploded perspective view, partially in section
showing a modified form of the invention.
DETAILED DESCRIPTION FOR claim 1:
[0029] FIG. 1, FIG. 3, and FIG. 4 of the drawings discloses pre
formed, two (2) piece containers, designated by reference numbers
10, the outer shell and 11, the unitary bottom wall on one end
thereof with an opposite open end. The inner liner 12 discloses
film whose shape conforms to the outer shell 10 and bottom wall 11,
and is hermetically sealed to the same. The outer shell and inner
liner may be formed by a variety of materials
[0030] FIG. 2 of the drawings discloses a single piece formed
container designated by number 13 which includes both the side wall
and unitary bottom wall on one end thereof with an opposite open
end. The inner liner 14 discloses a film whose shape conforms to
the outer shell 13 and the bottom wall, and is hermetically sealed
to the same. The outer shell and inner and outer shell may be
formed by a variety of materials.
[0031] Preface for Data used in Claim 2:
[0032] We furnish drawing number MD-1600, sheet 1 for your
information.Our suppliers have patented all the equippment shown on
this drawing. We do not claim any of these items for our
patent.
[0033] The portion of the machine we wish to patent is the method
used in inserting the film into the pre formed container at Station
2.
[0034] A paper container for packaging a product comprising of:
* * * * *