U.S. patent application number 11/187956 was filed with the patent office on 2007-01-25 for food container.
This patent application is currently assigned to Continental Packaging (Thailand) Co., Ltd.. Invention is credited to Manit Kamolsuwan.
Application Number | 20070017964 11/187956 |
Document ID | / |
Family ID | 37678141 |
Filed Date | 2007-01-25 |
United States Patent
Application |
20070017964 |
Kind Code |
A1 |
Kamolsuwan; Manit |
January 25, 2007 |
Food container
Abstract
This invention provides a food container made of a paper sheet
with a base portion with four lateral edges connected by folding to
the lateral side portions along the folding line. Between each
lateral side portion is provided with a side flank which is divided
into two portions along the folding line. The outer rim portions of
a pair of opposite lateral side portions function as inner cover
portions similar in shape to a cut end gable. The outer rim
portions of another pair of opposite lateral side portions function
as outer cover portions.
Inventors: |
Kamolsuwan; Manit; (Bangkok,
TH) |
Correspondence
Address: |
BIRCH STEWART KOLASCH & BIRCH
PO BOX 747
FALLS CHURCH
VA
22040-0747
US
|
Assignee: |
Continental Packaging (Thailand)
Co., Ltd.
|
Family ID: |
37678141 |
Appl. No.: |
11/187956 |
Filed: |
July 25, 2005 |
Current U.S.
Class: |
229/155 ;
229/114; 229/186 |
Current CPC
Class: |
B65D 5/2057 20130101;
B65D 5/2076 20130101; B65D 5/2047 20130101; B65D 5/244
20130101 |
Class at
Publication: |
229/155 ;
229/186; 229/114 |
International
Class: |
B65D 5/10 20060101
B65D005/10; B65D 5/24 20060101 B65D005/24 |
Claims
1. A food container comprising a paper sheet with a base portion
(2) with four sides connected by folding to lateral side portions
(4) along the folding line (3), between each lateral side portion
(4) being provided with a side flank (5) connected by folding along
the folding line (3), the outer rim portions of a pair of the
opposite lateral side portions (4) functioning as inner cover
portions (7), the lateral side portions (4) and inner cover
portions (7) on both sides being connected by folding along the
folding line (3), the outer rim portions of another pair of
opposite lateral side portions (4) functioning as an outer cover
portion (8) and outer cover portion (9), the lateral side portions
(4) and the outer cover portion (8) along with the outer cover
portion (9) being connected by folding along the folding line (3)
characterized in that the side flank (5) is divided into two
portions by a folding line (6) into a side flank (5a) and side
flank (5b), the side flank (5a) being similar in shape to a
trapezoid and the side flank (5b) being similar in shape to a
triangle, both sides of the lateral side portions (4) on each side
being connected to either the side flank (5a) or side flank (5b)
with the opposite lateral side portions (4) being connected to the
same side flank (5)
2. A food container according to claim 1, wherein the outer cover
portion (8) is similar in shape to a cut end gable with a cutting
line (10) for inserting and attaching a tongue portion 11 of the
outer cover portion (9)
3. A food container according to claim 1 or 2, wherein the outer
cover portion (9) is similar in shape to a rectangle with cut
angles to conform with the outer cover portion (8) when inserted
and attached together, the outer region of the outer cover portion
(9) being provided with a tongue portion (11) for inserting into
the cutting line (10) of the outer cover portion (8)
Description
FIELD OF INVENTION
[0001] Engineering with regard to the production of food
container
BACKGROUND OF INVENTION
[0002] Conventional food containers are made of paper sheets with
the inner surfaces coated with a polymer compound. A food container
has four lateral side portions. Between the lateral side portions
are corner-edge sections. The lower side of each lateral side
portion is made into a base portion. One side portion of the
corner-edge portion is made into a side flank. The lateral edges of
the lateral side portion and the side flank are sealed together by
attaching the lateral regions of the lateral side portion coated
with the polymer compound onto an uncoated side flank. The sealing
between the surface coated with a heat resisting material and the
uncoated surface cannot prevent leakage or permeation of food
contained in the food container out along the lateral contact
surface which has been well sealed.
OBJECTIVE OF THE INVENTION
[0003] The food container according to the present invention is
made of a paper sheet which includes a base portion having four
sides connected to the lateral side portions along a folding line
in an overlapping manner. Between each lateral side portion is a
side flank which is divided into two portions along a folding line.
The outer rim portions of a pair of opposite lateral side portions
function as inner cover portions similar to cut-end gables. The
outer rim portions of another pair of opposite lateral side
portions function as outer cover portions. Forming a food container
by folding according to the present invention has an advantage in
preventing leakage of food contained in the food container out
along the lateral contact surface sealed and attached together
since it is a double layer sealing structure which can prevent
leakage effectively.
[0004] An object of the present invention is to provide an improved
food container which can prevent leakage of food contained in the
food container out along the lateral contact surface sealed and
attached. This can be achieved by making the lateral contact
surface of the food container sealed and attached together on the
surface coated with a polymer compound. This can prevent leakage
effectively.
BRIEF DESCRIPTION OF THE DRAWINGS
[0005] FIG. 1 shows a food container according to the present
invention before forming.
[0006] FIG. 2 shows a food container according to the present
invention after forming by folding.
[0007] FIG. 3 shows a food container according to the present
invention.
DETAILED DESCRIPTION OF INVENTION
[0008] FIG. 1 shows a food container 1 according to the present
invention before forming the food container 1 into a shape. The
food container 1 is made of a paper sheet including a base portion
2 with four sides connected by folding to the lateral side portions
4 along the folding line 3. Between each lateral side portion 4 is
a side flank 5 connected by folding along the folding line 3. The
side flank 5 is divided into two portions along the folding line 6
into a side flank 5a and side flank 5b. The side flank 5a is
approximately in a trapezoidal shape and the side flank 5b is
approximately in a triangular shape. Both sides of each lateral
side portion 4 are connected to either of the side flank 5a or side
flank 5b, with the opposite lateral side portions 4 connected to
the same side flank 5.
[0009] The outer rim portions of a pair of the opposite lateral
side portions 4 function as inner cover portions 7 with a shape
similar to a cut end gable. The lateral side portions 4 and the
inner cover portions 7 on both sides are connected by folding along
the folding line 3. The outer rim portions of another pair of the
opposite lateral side portions 4 function as an outer cover
portions 8 and an outer cover portion 9. The lateral side portions
4 and the outer cover portion 8 together with the outer cover
portion 9 are also connected together by folding along the folding
line 3.
[0010] The outer cover portion 8 is similar in shape to a cut end
gable with a cutting line 10 for engaging a tongue portion 11 of
the outer cover portion 9. This outer cover portion 9 is similar in
shape to a rectangle with cut angles to conform with the outer
cover portion 8 when inserted and attached together. The outer
region of the outer cover portion 9 is provided with a tongue
portion 11 for inserting into the cutting line 10 of the outer
cover portion 8.
[0011] FIG. 2 shows a food container 1 which has already been
folded into a food container which is ready for use. This is
performed by folding the four lateral side portions 4 upward and
then aligning and attaching the side flank 5a and side flank 5b
using adhesive, and then folding each side flank 5 onto the outer
regions of the lateral side portions 4 along the folding line 3 and
attaching together by adhesive. This structure helps prevent
leakage of food contained in the food container 1 out along the
lateral contact surface sealed and attached together since it is a
double layer sealing which can effectively prevent leakage. After
that, continue to fold in such a manner to make the inner cover
portions 7 on both sides and the tongue portion 11 of the outer
cover portion 9 insert into the cutting line 10 of the outer cover
portion 8 to obtain a finished food container according to present
invention (as shown in FIG. 3).
BEST MODE FOR IMPLEMENTING THE INVENTION
[0012] As described in the detailed description of the
invention.
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