U.S. patent application number 12/588815 was filed with the patent office on 2011-05-05 for paper-made container.
This patent application is currently assigned to POWER SOURCE & ASSOCIATES CORP.. Invention is credited to Sheng-Hung Lin.
Application Number | 20110101077 12/588815 |
Document ID | / |
Family ID | 43924339 |
Filed Date | 2011-05-05 |
United States Patent
Application |
20110101077 |
Kind Code |
A1 |
Lin; Sheng-Hung |
May 5, 2011 |
Paper-made container
Abstract
A paper-made container includes a paper sheet which has a
bio-degradable layer coated thereto and an adhesive and
bio-degradable glue layer is coated on an underside or a peripheral
portion of the paper sheet such that the paper sheet is made to be
a container. The glue layer is coated to the paper sheet by way of
injection technique so as to reinforce the structural strength of
the paper-made container.
Inventors: |
Lin; Sheng-Hung; (Taipei
City, TW) |
Assignee: |
POWER SOURCE & ASSOCIATES
CORP.
|
Family ID: |
43924339 |
Appl. No.: |
12/588815 |
Filed: |
October 29, 2009 |
Current U.S.
Class: |
229/5.81 |
Current CPC
Class: |
B65D 3/06 20130101; B65D
65/466 20130101; B65D 25/24 20130101; Y02W 90/10 20150501; Y02W
90/13 20150501; B65D 77/2024 20130101 |
Class at
Publication: |
229/5.81 |
International
Class: |
B65D 5/62 20060101
B65D005/62 |
Claims
1. A paper-made container comprising: a paper sheet having a
bio-degradable layer coated thereto and an adhesive and
bio-degradable glue layer being coated on an underside or a
peripheral portion of the paper sheet which is made to be a
container.
2. The container as claimed in claim 1, wherein the paper sheet is
composed of a bottom plate and a peripheral wall, the bottom plate
is connected to the peripheral wall to form the container, the glue
layer is formed at a connection portion between the bottom plate
and the peripheral wall.
3. The container as claimed in claim 1, wherein the paper sheet
includes multiple walls which are folded upward and each wall
includes a lip, a corner space is defined between two adjacent ends
of the adjacent lips, the glue layer is coated on the lips and
fills in the corner spaces.
4. The container as claimed in claim 3, wherein the glue layer
extends over the distal edge of each lip and forms a reinforcement
portion, the reinforcement portion extends beyond the distal edge
of the lip and bends downward and forms a hook portion.
5. The container as claimed in claim 3, wherein the glue layer
extends to an underside of each lip and wraps around the distal
edge of each lip, the hook portion is formed at the underside of
the distal edge.
6. The container as claimed in claim 1, wherein two ends of the
paper sheet are connected to each other to from a cylindrical body
and two glue layers are formed on a top edge and a lower edge of
the cylindrical body.
Description
BACKGROUND OF THE INVENTION
[0001] (1) Field of the Invention
[0002] The present invention relates to a paper-made container, and
more particularly, to a paper-made container with reinforcement
structure.
[0003] (2) Description of the Prior Art
[0004] Conventional containers such as plates, cups and food boxes
are generally made of plastic material which is not bio-degradable
and becomes a burden for the environment.
[0005] Although there are several paper-made containers seen in the
market, the paper-made containers are made to include foldings or
ridges to keep their shape. However, the foldings or ridges require
a long time to form in the molds and adhesive is not easily applied
to those portions so that the containers are easily separated when
multiple parts are adhered together. A prior art known to applicant
discloses a paper-made container which is formed by a paper sheet
which is machined to form a bottom and a peripheral wall which is
separated from the bottom. The peripheral wall includes an outward
inclined wall and a lip which is connected to the edge of the
outward inclined wall. A notch is defined at the conjunction of the
outward inclined wall and the lip, and two sides of the notch are
combined to form a converge portion. The underside of the outward
inclined wall and the bottom are glued to form a container.
The gluing process has to be completed manually due to the
complicated structure and this increases the manufacturing cost and
the time required.
[0006] FIG. 1 shows a conventional paper-made container 91 with a
film 92 coated thereon, wherein the container 91 includes four
walls 41 and each wall 41 includes a connection lip and four corner
parts 93 are connected to the adjacent ends of the adjacent lips to
form a complete and continuous lip. The film 92 is then coated to
the inside of the container 91 and the lip to form a non-leak
container. However, the corner parts 93 cannot be made to be in
flush with the top surface or the bottom surface of the lips as
shown in the two circled drawings in FIG. 1. The film 92 cannot
smoothly to match the gap between the corner parts 93 and the lips,
therefore, leakage can happen at that area. Besides, some
containers are rectangular containers and the long sides may bend
during coating process and the film cannot firmly coat on the long
sides of the containers.
[0007] The present invention intends to provide a paper-made
container which improves the shortcomings of the conventional
similar products.
SUMMARY OF THE INVENTION
[0008] The present invention relates to a paper-made container
includes a paper sheet which has a bio-degradable layer coated
thereto and an adhesive and bio-degradable glue layer is coated on
proper portions such as the underside or the peripheral portion of
the paper sheet such that the paper sheet is made to be a
container.
[0009] The present invention will become more obvious from the
following description when taken in connection with the
accompanying drawings which show, for purposes of illustration
only, a preferred embodiment in accordance with the present
invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is an exploded view to show a conventional paper-made
container;
[0011] FIG. 2 is an exploded view to show a paper-made plate of the
present invention;
[0012] FIG. 3 is a perspective view to show the reverse side of the
paper-made plate of the present invention;
[0013] FIG. 4 is a perspective view to show the paper-made plate of
the present invention, wherein the adhesive glue layers are
disclosed;
[0014] FIG. 5 is a side cross sectional view of the paper-made
plate of the present invention;
[0015] FIG. 6 shows that the glue layer can be made to be a
protrusion along the periphery of the bottom plate;
[0016] FIG. 7 is a side cross sectional view of the paper-made
plate disclosed in FIG. 6 of the present invention;
[0017] FIG. 8 is a perspective view to show the paper-made food box
of the present
invention,
[0018] FIG. 9 is an exploded view to show the paper-made food box
of the present invention;
[0019] FIG. 10 is a side cross sectional view of the paper-made
food box of the present invention;
[0020] FIG. 11 shows a second embodiment of the connection of the
film and the lips of the paper-made food box of the present
invention;
[0021] FIG. 12 is a cross sectional view to show the second
embodiment of the connection of the glue layer and the lips of the
paper-made food box of the present invention;
[0022] FIG. 13 is a cross sectional view to show the second
embodiment of the connection of the glue layer and the lips of the
paper-made food box of the present invention, wherein a cover is
mounted to the food box and engaged with the hook portion formed by
the glue layer;
[0023] FIG. 14 shows a third embodiment of the connection of the
glue layer and the lips of the paper-made food box of the present
invention;
[0024] FIG. 15 is a cross sectional view to show the third
embodiment of the connection of the glue layer and the lips of the
paper-made food box of the present invention;
[0025] FIG. 16 is a cross sectional view to show the third
embodiment of the
connection of the glue layer and the lips of the paper-made food
box of the present invention, wherein a cover is mounted to the
food box and engaged with the hook portion formed by the glue
layer, and
[0026] FIG. 17 shows the paper-made cup of the present
invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0027] Referring to FIGS. 2 to 17, the paper-made container of the
present invention comprises a paper sheet 10 and an adhesive and
bio-degradable glue layer 20 is coated on the paper sheet 10. The
paper sheet is an elongate paper sheet and has a bio-degradable
layer 11 coated thereto. The bio-degradable layer 11 is made of PE,
PP, PET, or non-toxic resin or degradable PLA. The paper sheet 10
is glued and folded to make to be a paper-made container 1 so as to
contain water or food.
[0028] The adhesive and bio-degradable glue layer 20 can be PE, PP,
PET, or non-toxic resin or degradable PLA, and is coated to the
paper sheet 10 by way of injection such that the desired portions
of the paper sheet 10 is coated with the glue layer 20.
[0029] Referring to FIGS. 2 to 5, when the paper-made container is
a plate which is composed of a bottom plate 12 and a peripheral
wall 13, wherein the bottom plate 12 is a circular plate and the
peripheral wall 13 is a ring-shaped paper made by connecting two
ends of an elongate paper sheet. The diameter of the bottom plate
12 is the same as the bottom edge 131 of the peripheral wall 13
such that the bottom
plate 12 is connected to the bottom edge 131 of the peripheral wall
13 by the glue layer 20. The bottom edge 131 of the peripheral wall
13 includes a glue layer 20.
[0030] Referring to FIGS. 6 and 7 the glue layer 20 can be made to
have extra function such as disclosed in FIGS. 6 and 7; wherein the
glue layer 20 is made to protrude outward as a protrusion 21 which
is functioned as a support at the underside of the bottom plate
12.
[0031] When the paper-made container 1 is a food box as shown in
FIGS. 8 to 10, the paper sheet 10 includes multiple walls which are
folded upward and each wall includes a lip 14. A corner space 15 is
defined between two adjacent ends of the adjacent lips 14. The glue
layer 20 is coated on the lips 14 and fills in the corner spaces 15
so as to reinforce the structural strength of the lips 14. The glue
layer 20 is coated on the food box by injection technique and a
film 30 is then coated to the inside of the food box and the walls
and the lips 14 to form the food box.
[0032] FIGS. 11 to 13 show that the glue layer 20 on the lips 14
can be formed as a reinforcement portion 22 which extends downward
and beyond the distal edge of the lips 14 and forms as a hook
portion 23. The specific arrangement can reinforce the structural
strength of the lips 14 and a cover 40 is hooked to the hook
portions 23 to seal the food box.
[0033] FIGS. 14 to 16 show that the glue layer 20 extends to an
underside of each lip 14 and wraps around the distal edge of each
lip 14, the hook portion 23 is formed at the underside of the
distal edge. The arrangement can also reinforce the structural
strength of the lips 14 and the hook portions 23 are cooperated
with a cover 40 as well.
[0034] FIG. 17 shows that the paper-made container 1 is a cup,
wherein the two ends of the paper sheet 10 are connected to each
other to from a cylindrical body and two glue layers 20 are formed
on a top edge and a lower edge of the cylindrical body.
[0035] The paper-made container 1 can be a plate, a cup or a food
container, all of which is easily to make and includes proper
structural strength.
[0036] While we have shown and described the embodiment in
accordance with the present invention, it should be clear to those
skilled in the art that further embodiments may be made without
departing from the scope of the present invention.
* * * * *