U.S. patent application number 14/219496 was filed with the patent office on 2014-10-02 for blister pack.
This patent application is currently assigned to GC CORPORATION. The applicant listed for this patent is GC CORPORATION. Invention is credited to Kinya NIHEI.
Application Number | 20140291190 14/219496 |
Document ID | / |
Family ID | 50349416 |
Filed Date | 2014-10-02 |
United States Patent
Application |
20140291190 |
Kind Code |
A1 |
NIHEI; Kinya |
October 2, 2014 |
BLISTER PACK
Abstract
[Problems to be Solved] To provide a blister pack which can be
easily torn off and peeled by automatically adjusting a position of
tearing off and peeling even if a seal member becomes diagonally
with respect to a longitudinal direction of a main body portion
(storage recess portion) of the blister pack. [Solution] The
blister pack includes a main body portion 1 and seal member 2. The
main body portion 1 includes a rectangular storage recess portion
(1a) recessed at a center thereof and a plane portion for seal
member adhesion (1b) provided around the storage recess portion
(1a). The plane portion for seal member adhesion (1) is formed in a
direction parallel with the longitudinal direction of the storage
recess portion (1a), and on the right and left sides. The seal
member (2) has a gripping part (2a) protruding at least one end in
the longitudinal direction of the main body portion (1). The seal
member (2) seals a content adhered to the plane portion for seal
member adhesion (2b) and stored in the storage recess portion (1a),
and is torn off and peeled from the gripping part (2a). The one end
of the main body portion (1) is protruded to be a convex shape
having an apex toward the side opposite to the storage recess
portion, and formed to be line symmetry with respect to a center
axis in a direction parallel with the longitudinal direction of the
storage recess portion (1a).
Inventors: |
NIHEI; Kinya; (Nerima-ku,
JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
GC CORPORATION |
Bunkyo-ku |
|
JP |
|
|
Assignee: |
GC CORPORATION
Bunkyo-ku
JP
|
Family ID: |
50349416 |
Appl. No.: |
14/219496 |
Filed: |
March 19, 2014 |
Current U.S.
Class: |
206/467 |
Current CPC
Class: |
B65D 75/326 20130101;
B65D 2575/3245 20130101 |
Class at
Publication: |
206/467 |
International
Class: |
B65D 73/00 20060101
B65D073/00 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 28, 2013 |
JP |
2013-069138 |
Claims
1. A blister pack comprising a main body portion (1) and a seal
member (2), wherein the main body portion (1) comprises a
rectangular storage recess portion (1a) recessed at a center
thereof, and a seal member adhering plane portion (1b) provided
around the storage recess portion (1a), wherein the seal member
adhering plane portion (1b) is formed in a direction parallel with
the longitudinal direction of the storage recess portion (1a), and
on the right and left sides of the longitudinal direction, wherein
the seal member (2) has a gripping part (2a) extending beyond at
least one end in the longitudinal direction of the main body
portion (1), wherein the seal member (2) is to be adhered to the
seal member adhering plane portion (1b) to thereby seal a stored
item in the storage recess portion (1a), and is to be torn off and
peeled from the gripping part (2a), and wherein one end of the main
body portion (1) is protruded to be a convex shape having an apex
toward the side opposite to the storage recess portion (1a), and is
formed to be line symmetry with respect to a center line in a
direction parallel with the longitudinal direction of the storage
recess portion (1a).
2. The blister pack according to claim 1, wherein a flange portion
(3) is further formed around the seal member adhering plane portion
(1b) of the main body portion (1) via a step portion (3a).
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a blister pack, which can
be easily unsealed
[0003] 2. Description of the Conventional Art
[0004] A blister pack including a main body portion and a seal
member has been widely used in a package in a toiletry field, such
as a toothbrush, etc., a stationery field, such as a stapler, etc.,
a food filed, such as a ham and a sausage, etc., and a medical
device field, such as a syringe and a needle. The main body portion
has a storage recess portion made by thermoforming a plastic sheet
utilizing vacuum or compressed air. The seal member seals the
storage recess portion of the main body portion.
[0005] In such a blister pack, there are advantages, for example,
high sealing property to a stored item can be easily ensured, and
handling is very easy because taking out the stored item is
easy.
[0006] However, for ensuring the high sealing property, it is
necessary to tightly adhere the seal member to the main body
portion storing the stored item, so that large force may be
necessary to unseal.
[0007] In a case that a blister pack is sealed tightly as such,
generally, the blister pack is unsealed along the longitudinal
direction of the main body portion (storage recess portion)
thereof. As illustrated in FIG. 6 (I), as the length of the
adhesive portion, in which the seal member is torn-off and peeled
from the main body portion, is short when unsealing, a user can
easily unseal the seal member with small force. For example, as
illustrated in FIG. 6 (II), when a user unseals the adhesive
portion in the rectangular direction to the longitudinal direction
of the main body portion, the length of the adhesive portion
torn-off and peeled from the main body portion becomes very long,
so that greater force is necessary to unseal the seal member.
[0008] From such a point of view, generally, a blister pack is
unsealed along the longitudinal direction of the main body portion
(storage recess portion). However, if an user does not unseal
carefully, the blister pack may be unsealed diagonally, as
illustrated in FIG. 7 (II). In such a case, the user needs greater
force and often takes time to unseal. In addition to this, there
are many fears that the user drops the blister pack or the stored
item. Thus, it has become a big problem.
[0009] For solving the problem that greater force is necessary to
unseal the blister pack, for example, Japanese Patent Application
Laid-Open No. 2011-148525 discloses a blister pack having the
following configuration. That is, the blister pack includes a
blister sheet and an adhesive sheet. The blister sheet has a
blister case having a storage portion, which can store an item to
be stored. The adhesive sheet adheres to the blister sheet so as to
cover an opening portion of the storage portion of the blister
case. In this configuration, on the surrounding of the blister
case, an annular seal portion for sealing the blister sheet and the
adhesive sheet is provided. On the outside of the annular seal
portion, a seal area for sealing the blister sheet and the adhesive
sheet is provided sandwiching an easy peel area. The easy peel area
is composed of a weak seal area or a non-seal area. In the weak
seal area, the seal strength is weaker than the seal strength
between the blister sheet and the adhesive sheet in the annular
seal portion and the seal area. In the non-seal area, the blister
sheet and the adhesive sheet are not sealed each other. In
addition, an unsealing start point portion is provided on the seal
area. The unsealing start point portion is a start point for
unsealing the adhesive sheet from the blister sheet toward the easy
peel area side. The seal between the adhesive sheet and the blister
sheet in the annular seal portion can be peeled via the easy peel
area by peel force for peeling the adhesive sheet in the seal area
from the unsealing start point portion.
[0010] This blister pack is characterized in that the easy peel
area being an area with weak seal strength or a non-seal area is
provided, to thereby be easily unsealed. However, it is difficult
to secure high sealing property because of the easy peel area.
Further, the structure is complicated and forces an user to unseal
the blister pack from the unsealing start point portion formed in
the blister pack toward the easy peel area. Thus, there is a
problem that it is very inconvenient.
SUMMARY OF THE INVENTION
Problems to be Solved by the Invention
[0011] In view of the above problem, the present invention is
directed to provide a blister pack, in which a seal member can be
easily torn off and peeled. by automatically adjusting the course
of the position to be torn off and peeled, even when the seal
member becomes diagonal to the longitudinal direction of the main
body portion of the blister pack at a time of starting to unseal
the blister pack.
Means to Solve the Problems
[0012] The present inventors worked earnestly to solve the above
problem and reached the following conclusion. That is, the blister
pack includes a main body portion and a seal member. The main body
portion includes a rectangular storage recess portion recessed at a
center thereof, and a seal member adhering plane portion provided
around the storage recess portion. The seal member adhering plane
portion is formed in a direction parallel with the longitudinal
direction of the storage recess portion, and on the right and left
sides of the longitudinal direction. The seal member has a gripping
part extending beyond at least one end in the longitudinal
direction of the main body portion. And the seal member is to be
adhered to the seal member adhering plane portion to thereby seal a
stored item in the storage recess portion, and is to be torn off
and peeled from the gripping part. Further, the one end of the main
body portion is protruded to be a convex shape having an apex
toward the side opposite to the storage recess portion, and is
formed to be line symmetry with respect to a center line in a
direction parallel with the longitudinal direction of the storage
recess portion. Having such a structure, even if the seal member is
diagonally torn off at a time of starting to unseal the blister
pack, the seal member rotates around the apex of the one end of the
main body portion, regardless of the presence or absence of
consciousness of the user. Then, the seal member is automatically
adjusted so as to be torn off along the longitudinal direction of
the main body portion (storage recess portion). Thus, large force
is not necessary since the seal member will not be turn off
diagonally. Further, as going to peel off, the peeling line reaches
the storage portion which does not adhere to the seal member, so
that the adhesive distance is shorten, and thus the large force is
not necessary to peel off. Thus, by only adjusting the direction of
peeling off at the one end of the main body portion at a starting
time of peeling off, the user can easily peel off the seal
member.
[0013] That is, the present invention is a blister pack including a
main body portion and a seal member. The main body portion includes
a storage recess portion recessed at the center thereof and a seal
member adhering plane portion provided around the storage recess
portion. In the main body portion, the seal member adhering plane
portion is formed in a direction parallel with the longitudinal
direction of the storage recess portion having a rectangular shape,
and on the right and left sides of the longitudinal direction. The
seal member has a gripping part extending beyond at least one end
in the longitudinal direction of the main body portion. The seal
member is to be adhered to the seal member adhering plane portion
to thereby seal a stored item in the storage recess portion, and is
to be torn off and peeled from the gripping part. Further, the one
end of the main body portion is protruded to be a convex shape,
which has an apex toward the side opposite to the storage recess
portion, and is formed to be line symmetry with respect to a center
line in a direction parallel with the longitudinal direction of the
storage recess portion.
[0014] Further, if a flange portion is further formed around the
seal member adhering plane portion of the main body portion via a
step portion, the flange portion can increase strength and rigidity
of the blister pack. Further, at the one end of the longitudinal
direction of the main body portion, the flange portion and a part
of the gripping part of the seal member are overlapped, and thus it
can prevent that the seal member from being torn off accidentally,
so that it is preferable.
EFFECT OF THE INVENTION
[0015] The blister pack according to the present invention includes
the main body portion and the seal member. The main body portion
includes a rectangular storage recess portion recessed at a center
thereof and a seal member adhering plane portion provided around
the storage recess portion. The seal member adhering plane portion
is formed in a direction parallel with the longitudinal direction
of the storage recess portion, and on the right and left sides of
the longitudinal direction. The seal member has a gripping part
extending beyond at least one end in the longitudinal direction of
the main body portion. The seal member is to be adhered to the seal
member adhering plane portion to thereby seal a stored item in the
storage recess portion, and is to be torn off and peeled from the
gripping part. Further, the one end of the main body portion is
protruded to be a convex shape, which has an apex toward the side
opposite to the storage recess portion, and is formed to be line
symmetry with respect to a center line in a direction parallel with
the longitudinal direction of the storage recess portion. Having
such a structure, even if the seal member is diagonally torn off at
a time of starting to unseal the blister pack, the seal member
rotates around the apex of the one end of the main body portion,
regardless of the presence or absence of consciousness of the user.
Then, the seal member is automatically adjusted so as to be torn
off along the longitudinal direction of the main body portion
(storage recess portion). Thus, large force is not necessary since
the seal member will not torn off diagonally. Further, as going to
peel off, the peeling line reaches the storage portion which does
not adhere to the seal member, so that the adhesive distance is
shorten, and thus the large force is not necessary to peel off.
Thus, by only adjusting the direction of peeling off at the one end
of the main body portion at a starting time of peeling off, the
user can easily peel off the seal member. Furthermore, since it is
not necessary to change the adhesion force of the location, etc.,
the blister pack can be easily produced.
[0016] Further, in an embodiment in which a flange portion is
formed around the seal member adhering plane portion of the main
body portion via a step portion, the flange portion can increase
strength and rigidity of the blister pack. In addition, at the one
end of the longitudinal direction of the main body portion, the
flange portion and a part of the gripping part of the seal member
are overlapped, and thus it can prevent the seal member from being
torn off accidentally, so that it is preferable.
BRIEF EXPLANATION OF DRAWINGS
[0017] FIG. 1 is a front view illustrating an exemplary embodiment
of the blister pack according to the present invention.
[0018] FIG. 2 is an explanation view illustrating a procedure of
peeling off the seal member in the blister pack illustrated in FIG.
1.
[0019] FIG. 3 is a front view illustrating another exemplary
embodiment according to the present invention.
[0020] FIG. 4 is a left side view of the blister pack illustrated
in FIG. 3.
[0021] FIG. 5 is a front view illustrating another exemplary
embodiment of the blister pack according to the present
invention.
[0022] FIG. 6 is an explanation view illustrating a difference by
the direction of peeling off the seal member in the conventional
blister pack.
[0023] FIG. 7 is an explanation view illustrating a difference
between the case of peeling off diagonally and the case of peeling
off horizontally when the seal member is torn off in the
longitudinal direction of the conventional blister pack.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
[0024] The blister pack according to the present invention will be
described, referring to drawings as follows.
[0025] A main body portion 1 includes a storage recess portion 1a,
which has a rectangular shape and is recessed at a center thereof,
and a seal member adhering plane portion 1b. The seal member
adhering plane portion 1b is formed in parallel to the longitudinal
direction of the storage recess portion 1a at right and left sides.
The rectangular shape in the present invention widely means the
shape having a longer vertical width with respect to a horizontal
width. As each exemplary embodiment illustrated in figures, the
rectangular shape includes a shape in which each corner thereof has
an arc-shape, and an elliptical shape.
[0026] In this blister pack, it is preferable that the seal member
adhering plane portion 1b is formed to have a shape which is in a
direction parallel with the longitudinal direction of the storage
recess portion 1a and formed symmetrically in left and right sides.
If the seal member adhering plane portion 1b is formed to have such
a shape, which is in a parallel direction with the longitudinal
direction of the storage recess portion 1a and formed symmetrically
in left and right sides, the following effect is obtained. That is,
when an adhered seal member 2, which is described later, is torn
off and peeled along the longitudinal direction of the main body
portion (storage recess portion 1a), an uniform force is applied to
the left and right, so that it is hard to be diagonally.
[0027] Further, one end of the longitudinal direction of the main
body is protruded to be a convex shape, which has an apex toward
the side opposite to the storage recess portion, and is formed to
be line symmetry with respect to a center line parallel in the
longitudinal direction of the storage recess portion.
[0028] Having such a structure, even if the seal member 2 is
diagonally torn off at a time of starting to unseal the blister
pack (FIG. 2 (I)), the seal member 2 rotates around the apex of the
one end of the longitudinal direction the main body portion (FIG. 2
(II), (III)), regardless of the presence or absence of
consciousness of the user. Then, the seal member 2 is automatically
adjusted so as to be torn off along the longitudinal direction of
the main body portion 1 (storage recess portion 1a) (FIG. 2
(N)).
[0029] The seal member 2 has a gripping part 2a which extends
beyond at least one end of the longitudinal direction of the main
body portion 1. The seal member 2 is to be adhered to the seal
member adhering plane portion 1b to thereby seal a stored item
stored in the storage recess portion 1a, and is to be torn off and
peeled from the gripping part 2.
[0030] A flange portion 3 is formed around the seal member adhering
plane portion 1b via a step portion 3a.
[0031] Then, the specific configuration of the blister pack
according to the present invention will be described in detail. The
one end of the longitudinal direction of the main body portion 1 is
protruded to be a convex shape having an apex toward the side
opposite to the storage recess portion 1a, as illustrated in FIGS.
1, 3 and 5. Further, the one end of the longitudinal direction of
the main body portion 1 is formed so as to be in line symmetry with
respect to the center line in a direction parallel with the
longitudinal direction of the storage recess portion 1a (main body
portion 1).
[0032] By forming the one end of the longitudinal direction of the
main body portion 1 to be in line symmetry with respect to the
center line, even when the seal member 2 is almost diagonally torn
off at a time of starting to unseal the blister pack, the seal
member 2 rotates around the apex of the one end of the longitudinal
direction of the main body portion 1, and is automatically adjusted
so as to be torn off along the longitudinal direction of the main
body portion 1 (storage recess portion) 1a.
[0033] In other words, by contacting the seal member 2 to the
rotatable apex, the direction of peeling off the seal member 2 is
naturally adjusted to the state in which the length of adhesive
part is shortest and the force for peeling off is least. That is,
the state is the direction along the longitudinal direction of the
main body portion 1 (storage recess portion 1a) of the blister
pack. Taking this configuration, even if a user does not strongly
aware the direction of the seal member 2, the user can very easily
peel off the seal member 2 along the longitudinal direction of the
main body portion 1 (storage recess portion 1a).
[0034] Further, since it is sufficient that the one end of the
longitudinal direction of the main body portion 1 of the blister
pack is in line symmetry with respect to the center line in
parallel, it can have an exemplary embodiment that a plurality of
apexes is protruded as illustrated in FIG. 5.
[0035] Furthermore, as illustrated in FIGS. 3 and 4, in the
exemplary embodiment in which a flange portion 3 is formed around
the seal member adhering plane portion 1b via a step portion 3a,
the flange portion 3a can be integrally formed with the main body
portion 1, so that it is easy to produce. In addition, this
configuration can increase strength and rigidity of the blister
pack. Further, as illustrated in FIG. 4, the flange portion 3 and a
part of the gripping part 2a of the seal member 2 are overlapped,
so that it can prevent the seal member 2 from being torn off
accidentally. In addition, a slight gap generates between the seal
member 2 and the flange portion 3 by a step portion 3a and they are
not in close contact. Thus, the user can easily grip the gripping
part 2a of the seal member 2 and the usability is good.
* * * * *