U.S. patent application number 13/504265 was filed with the patent office on 2012-10-25 for packing bag for transportation.
Invention is credited to Takuo Itiyanagi, Akitoshi Nishikawa.
Application Number | 20120269462 13/504265 |
Document ID | / |
Family ID | 43921447 |
Filed Date | 2012-10-25 |
United States Patent
Application |
20120269462 |
Kind Code |
A1 |
Itiyanagi; Takuo ; et
al. |
October 25, 2012 |
PACKING BAG FOR TRANSPORTATION
Abstract
Provided is a packing bag for transportation, including: a body
(1) having an opening (2); and an openable and closable sealing
part (3) for sealing the opening (2), the body (1) including: two
packing material sheets (4, 5) each formed of a thermoplastic
synthetic resin film; an absorbing material (6) sandwiched between
the two packing material sheets (4, 5), the absorbing material (6)
being obtained in such a manner that a synthetic fiber drawn into a
fibrous form is subjected to hydrophilic treatment and then woven
into cloth; and sides (7) sandwiching the absorbing material (6),
which are heat-sealed together at portions excluding the opening
(3).
Inventors: |
Itiyanagi; Takuo; (Tokyo,
JP) ; Nishikawa; Akitoshi; (Tokyo, JP) |
Family ID: |
43921447 |
Appl. No.: |
13/504265 |
Filed: |
October 27, 2009 |
PCT Filed: |
October 27, 2009 |
PCT NO: |
PCT/JP2009/005646 |
371 Date: |
July 5, 2012 |
Current U.S.
Class: |
383/64 |
Current CPC
Class: |
B65D 31/12 20130101;
B65D 81/264 20130101; B65D 33/2508 20130101 |
Class at
Publication: |
383/64 |
International
Class: |
B65D 33/16 20060101
B65D033/16 |
Claims
1. A packing bag for transportation, comprising: a body having an
opening; and an openable and closable sealing part for sealing the
opening, the body comprising: two packing material sheets each
formed of a thermoplastic synthetic resin film; an absorbing
material sandwiched between the two packing material sheets, the
absorbing material being obtained in such a manner that a synthetic
fiber drawn into a fibrous form is subjected to hydrophilic
treatment and then woven into cloth; and sides sandwiching the
absorbing material, which are heat-sealed at the portions excluding
the opening.
2. A packing bag for transportation according to claim 1, wherein
the synthetic fiber subjected to the hydrophilic treatment is
obtained in such a manner that a thermoplastic resin subjected to
the hydrophilic treatment is laminated on a surface of the
synthetic fiber.
3. A packing bag for transportation according to claim 1, wherein a
synthetic resin to be drawn into the fibrous form comprises a
synthetic resin having a hydrophilic group.
4. A packing bag for transportation according to claim 1, wherein
the openable and closable sealing part for sealing the opening of
the body comprises a slide zipper or a seal zipper.
5. A packing bag for transportation according to claim 1, wherein
the thermoplastic synthetic resin film forming each of the two
packing material sheets is transparent.
Description
TECHNICAL FIELD
[0001] The present invention relates to a packing bag for
transportation, which is used for transporting articles such as a
container containing liquid, and food containing an exudative
fluid.
BACKGROUND ART
[0002] In a case of transporting a container containing liquid, the
liquid may spill out due to a breakage of the container, looseness
of a cap, or the like, which may stain other articles of transport.
Conventionally, in order to prevent this problem, the container is
covered with an absorbing material for absorbing the spilled
liquid, and the covered container is put into a packing bag. Then,
double packing is performed by putting the container into another
packing bag, or the container is put into, instead of the another
packing bag, a tough container capable of preventing a breakage.
This manufacture of this packing bag inevitably requires much time
and high cost, and hence there has been a expectation for
simplification of the packing bag.
[0003] In order to meet this expectation, the following envelope is
proposed (for example, see Patent Literature 1). Specifically, the
envelope includes a packing bag and a liquid absorbent. The packing
bag is formed of a laminated body obtained by laminating a film
layer on at least one surface of a sheet-like base material, and is
fabricated so as to prevent a leakage of liquid. The liquid
absorbent is provided inside the packing bag.
[0004] However, regarding the envelope proposed here, the packing
bag is formed of the laminated body including the sheet-like base
material and the film layer, and the packing bag and the liquid
absorbent are formed in totally separate processes respectively.
Then, the liquid absorbent is provided inside the packing bag.
Therefore, manufacture of the envelope requires much time and
effort, and hence the envelope is not necessarily satisfactory in
terms of cost.
[0005] In recent years, frequency of transporting a specimen for
medical examination is increased, and hence a container containing
the specimen is transported with increasing frequency. The
transportation of the container requires that the container be
sealed in a packing bag which is fabricated so as to prevent a
leakage of liquid, but the envelope as proposed above is
disadvantageous in terms of cost. Accordingly, there is a problem
of more inexpensive packing bag.
[0006] For example, for the purpose of preventing a leakage, the
following packing bag is proposed to achieve this purpose.
Specifically, the packing bag is made of a synthetic resin, and
includes bottom and both sides and a sealing part which is made for
an opening. Examples of packing materials for the packing bag
include a synthetic resin film made of polyethylene, polyethylene
terephthalate (PET), nylon, or polypropylene, a combination of the
resins, or a combination of the resins and an aluminum foil. The
packing bag is provided with an absorbing material for absorbing
all the liquid spilled out in a body. Thus, the packing bag is
completed.
[0007] It is preferred to use, as the absorbing material provided
in the body, a water-absorbing (hydrophilic) material formed of a
fibrous structure, such as paper, nonwoven fabric, or membrane
filter. In addition, in a case where the absorbing material is
fixed on an inner surface of the packing bag, the absorbing
material does not slide within the bag when the container is put
into/taken out of the packing bag, and hence the container is
easily put into/taken out of the packing bag, which is
preferred.
[0008] In order to fix the absorbing material to be furnished in
the body, when packing materials each formed of the synthetic resin
film are laminated one on top of another to form a bag, the
absorbing material may be sandwiched between the packing materials,
and then peripheral portions sandwiching the absorbing material may
be heat-sealed. This facilitates manufacture, and hence a reduction
in cost can be achieved.
[0009] However, the absorbing material, which is sandwiched between
the packing materials each formed of the synthetic resin film, is
fixed while keeping pores of fibers at the heat-sealed parts. The
pores of fibers easily allow penetration of liquid due to a
capillarity action, and hence when liquid leaks in the body, the
liquid absorbed by the absorbing material seeps through the
above-mentioned pores of fibers at the heat-sealed parts out of the
body. As a result, the packing bag is inadequate to prevent a
leakage of liquid.
[0010] In a case where the fibrous structure made of a
thermoplastic resin is used as the absorbing material, when the
packing materials each formed of the synthetic resin film are
heat-sealed together, the fibrous structure of the absorbing
material is fused to break, and hence the capillarity action does
not occur at the heat-sealed parts. Accordingly, the liquid
contained in the body does not seep out. However, the fibrous
structure made of the thermoplastic resin hardly absorbs liquid,
and hence is inadequate as the absorbing material.
[0011] Further, the fibrous structure obtained by mixing
thermoplastic resin powder in pulp may be used as the absorbing
material. However, in a case where a content of the thermoplastic
resin powder is low, when the packing materials each formed of the
synthetic resin film are heat-sealed together, the pores of fibers
of the fibrous structure of the absorbing material are not
completely filled with the fused thermoplastic resin, and the
capillarity action occurs at the heat-sealed parts, with the result
that the liquid contained in the body seeps out. Further, when the
content of the thermoplastic resin powder is high, the pores of
fibers of the fibrous structure of the absorbing material are
completely filled with the fused thermoplastic resin, and the
capillarity action does not occur at the heat-sealed parts, with
the result that the liquid contained in the body does not seep out.
However, the pores of fibers of the fibrous structure of the
absorbing material are filled with the thermoplastic resin powder,
and hence the pores of fibers of the fibrous structure are reduced,
which causes a problem in that an amount of absorbed liquid is
reduced.
[0012] For the purpose of solving this problem, there may be
proposed a packing bag in which packing materials each formed of a
synthetic resin film are slightly larger in dimension than an
absorbing material to be internally provided, and thus the
absorbing material is not present at outermost portions of
heat-sealed parts. However, this packing bag requires much time and
effort for positioning the absorbing material. Accordingly, this
packing bag is inadequate for mass production, and needs high
cost.
CITATION LIST
Patent Literature
[0013] [PTL 1] JP 2001-247134 A
SUMMARY OF INVENTION
Technical Problems
[0014] Therefore, in order to solve the above-mentioned problems,
as a result of intensive studies, inventors of the present
invention have succeeded to cause fibrous structure of an absorbing
material to disappear when the absorbing material is sandwiched
between synthetic resin films and then heat-sealed, and have
completed a packing bag for transportation capable of preventing a
leakage of liquid even when the absorbing material having a high
water-absorbing property is sandwiched between entire surfaces to
be heat-sealed.
[0015] It is an object of the present invention to provide a
packing bag for transportation, which is convenient for
transportation of articles such as a container containing liquid,
and food containing an exudative fluid, capable of preventing
liquid from leaking out of a body, capable of keeping a humidity so
as to prevent the articles in the body from drying up, and capable
of achieving a reduction in cost.
Solution to Problems
[0016] In order to achieve the above-mentioned object, according to
the invention as described in claim 1, there is provided a packing
bag for transportation, including: a body having an opening; and an
openable and closable sealing part for sealing the opening, the
body including: two packing material sheets each formed of a
thermoplastic synthetic resin film; an absorbing material
sandwiched between the two packing material sheets, the absorbing
material being obtained in such a manner that a synthetic fiber
drawn into a fibrous form is subjected to hydrophilic treatment and
then woven into cloth; and bottom and both sides sandwiching the
absorbing material, which are heat-sealed together at portions
excluding the opening.
[0017] According to the invention as described in claim 2, the
synthetic fiber subjected to the hydrophilic treatment according to
claim 1 is obtained in such a manner that a thermoplastic resin
subjected to the hydrophilic treatment is laminated on a surface of
the synthetic fiber.
[0018] According to the invention as described in claim 3, a
synthetic resin to be drawn into the fibrous form according to
claim 1 or 2 includes a synthetic resin having a hydrophilic
group.
[0019] According to the invention as described in claim 4, the
openable and closable sealing part for sealing the opening of the
body according to any one of claims 1, 2, and 3 includes a slide
zipper or a seal zipper.
[0020] According to the invention as described in claim 5, the
thermoplastic synthetic resin film forming each of the two packing
material sheets according to any one of claims 1, 2, 3, and 4 is
transparent.
Advantageous Effects of Invention
[0021] According to the packing bag for transportation of claim 1,
the packing bag for transportation includes: the body having the
opening; and the openable and closable sealing part for sealing the
opening, the body including: the two packing material sheets each
formed of the thermoplastic synthetic resin film; the absorbing
material sandwiched between the two packing material sheets, the
absorbing material being obtained in such a manner that the
synthetic fiber drawn into a fibrous form is subjected to the
hydrophilic treatment and then woven into cloth; and the sides
sandwiching the absorbing material, which are heat-sealed at the
portions excluding the opening. Accordingly, when heat-sealing
sides of the two packing material sheets which sandwich the
absorbing material therebetween, the synthetic fiber forming the
absorbing material is fused to fill pores of fibers, to thereby be
welded to the packing material sheets. As a result, heat-sealed
parts are sealed so as to prevent penetration of liquid. In a case
where liquid leaks in the body, the liquid absorbed by the
absorbing material does not seep through the heat-sealed parts out
of the body.
[0022] Further, regarding the absorbing material, the synthetic
fiber drawn into a fibrous form is subjected to the hydrophilic
treatment, and hence the absorbing material attracts the liquid
leaking in the body, with the result that the liquid can be
absorbed and kept in the pores of fibers of the absorbing
material.
[0023] According to the packing bag for transportation of claim 2,
the synthetic fiber subjected to the hydrophilic treatment
according to claim 1 is obtained in such a manner that the
thermoplastic resin subjected to the hydrophilic treatment is
laminated on the surface of the synthetic fiber, and hence the
thermoplastic resin laminated on the surface of the synthetic fiber
attracts the liquid leaking in the body, with the result that the
liquid can be absorbed and kept in the pores of fibers of the
absorbing material.
[0024] According to the packing bag for transportation of claim 3,
the synthetic resin drawn into the fibrous form according to claim
1 or 2 includes a synthetic resin having a hydrophilic group, and
hence the synthetic resin more effectively attracts the liquid
leaking in the body, with the result that the liquid can be
absorbed and kept in the pores of fibers of the absorbing
material.
[0025] According to the packing bag for transportation of claim 4,
the sealing part for sealing the opening of the body according to
any one of claims 1, 2, and 3 includes a slide zipper or a seal
zipper, and hence operations of opening and sealing are
facilitated. As a result, when opening the opening of the packing
bag, dangerous tools such as scissors and a knife are not
needed.
[0026] According to the packing bag for transportation of claim 5,
the thermoplastic synthetic resin film forming each of the packing
material sheets according to any one of claims 1, 2, 3, and 4 is
transparent, and hence a state of an object contained in the body
can be recognized from an outside of the body. In a state in which
the body is still sealed, for example, a label or a bar code
attached to the object contained in the body can be recognized from
the outside of the body.
BRIEF DESCRIPTION OF DRAWINGS
[0027] [FIG. 1] A perspective view illustrating a packing bag for
transportation according to an exemplary embodiment of the present
invention.
[0028] [FIG. 2] An exploded perspective view illustrating the
packing bag for transportation of FIG. 1.
[0029] [FIG. 3] A longitudinal sectional view illustrating an open
state of the packing bag for transportation of FIG. 1.
[0030] [FIG. 4] A lateral sectional view taken along the line A-A
of FIG. 1.
DESCRIPTION OF EMBODIMENT
[0031] A packing bag for transportation according to an exemplary
embodiment of the present invention is described in detail with
reference to the drawings.
[0032] FIGS. 1 to 3 illustrate the packing bag for transportation
according to the exemplary embodiment of the present invention.
FIG. 1 is a perspective view illustrating the packing bag for
transportation according to the present invention. FIG. 2 is an
exploded perspective view illustrating the packing bag for
transportation of FIG. 1. FIG. 3 is a longitudinal sectional view
illustrating an open state of the packing bag for transportation of
FIG. 1. FIG. 4 is a lateral sectional view taken along the line A-A
of FIG. 1.
[0033] The packing bag for transportation according to the
embodiment of the present invention includes an openable and
closable sealing part 3 provided to an opening 2 of a body 1 which
has three heat-sealed sides and a quadrangular shape. The
above-mentioned body 1 has such a configuration that an absorbing
material 6 is sandwiched between two packing material sheets 4, 5
each formed of a thermoplastic synthetic resin film, and that sides
7 sandwiching the absorbing material 6 are heat-sealed together at
portions excluding the opening 2.
[0034] As the above-mentioned thermoplastic synthetic resin film
forming each of the packing material sheets 4, 5, a transparent
synthetic resin film is used in the embodiment of the present
invention. The synthetic resin film is made of polyethylene or
polypropylene.
[0035] Further, the absorbing material 6 sandwiched between the two
packing material sheets 4, 5 is obtained in such a manner that a
synthetic fiber drawn into a fibrous form is subjected to
hydrophilic treatment and then woven into cloth. According to the
embodiment of the present invention, the above-mentioned synthetic
fiber subjected to the hydrophilic treatment is obtained in such a
manner that a thermoplastic resin subjected to the hydrophilic
treatment is laminated on a surface of the synthetic fiber.
Further, a synthetic resin to be drawn into the fibrous form is not
particularly limited, but is preferred to be a synthetic resin
having a hydrophilic group, for example, plastics having a
hydrophilic group such as an amide group, a sulfone group, or a
carboxyl group on a surface thereof.
[0036] The absorbing material 6 is formed into the same shape as
those of the packing material sheets 4, 5, but has a longitudinal
(vertical in the drawing sheet) length smaller than those of the
packing material sheets 4, 5. When lining up bottom sides and both
sidelong sides of all the packing material sheets 4, 5 and the
absorbing material 6, the absorbing material 6 has such a length
that an upper side of the absorbing material 6 does not overlap the
sealing part 3 provided at upper sides of the packing material
sheets 4, 5.
[0037] Further, the sealing part 3 provided to the opening 2 of the
body 1 is not particularly limited as long as the sealing part 3
can hermetically seal the opening 6, but it is preferred that the
sealing part 3 include a slide zipper or a seal zipper. According
to the embodiment of the present invention, the sealing part 3
includes a groove for a slide zipper or seal zipper 3a provided in
an upper side of one of the packing material sheets 4, 5, and a
protruded streak part 3b provided on an upper side of the other of
the packing material sheets 4, 5 so as to be fast fitted in the
groove for a slide zipper or seal zipper 3a.
[0038] The above-mentioned body 1 has such a configuration that the
absorbing material 6 is sandwiched between the two packing material
sheets 4, 5 each formed of the thermoplastic synthetic resin film,
and that the sides 7 sandwiching the absorbing material 6 are
heat-sealed together at the portions excluding the opening 2.
According to the embodiment of the present invention, in addition
to the above-mentioned configuration, the packing material sheets
4, 5 and the absorbing material 6 are heat-sealed together in a
longitudinal direction, to thereby form a partition sealing part 8
substantially at a center portion of the body 1.
[0039] The packing bag for transportation thus configured includes
the body 1 including: the two packing material sheets 4, each
formed of the thermoplastic synthetic resin film; the absorbing
material 6 sandwiched between the two packing material sheets 4, 5,
the absorbing material 6 being obtained in such a manner that the
synthetic fiber drawn into a fibrous form is subjected to the
hydrophilic treatment and then woven into cloth; and the sides 7
sandwiching the absorbing material 6, which are heat-sealed
together at the portions excluding the opening 3. Accordingly, when
heat-sealing sides of the two packing material sheets 4, 5 which
sandwich the absorbing material 6 therebetween, the synthetic fiber
forming the absorbing material 6 is fused to fill pores of fibers,
to thereby be welded to the packing material sheets 4, 5. As a
result, heat-sealed parts 9 are sealed so as to prevent penetration
of liquid. When liquid leaks in the body 1, the liquid absorbed by
the absorbing material 6 does not seep through the heat-sealed
parts 9 out of the body 1.
[0040] Further, regarding the absorbing material 6, the synthetic
fiber drawn into a fibrous form is subjected to the hydrophilic
treatment, and hence the absorbing material 6 attracts the liquid
leaking in the body 1, with the result that the liquid can be
absorbed and kept in the pores of fibers of the absorbing material
6. According to the embodiment of the present invention, the
above-mentioned synthetic fiber subjected to the hydrophilic
treatment is obtained in such a manner that the thermoplastic resin
subjected to the hydrophilic treatment is laminated on the surface
of the synthetic fiber, and hence the thermoplastic resin laminated
on the surface of the synthetic fiber attracts the liquid leaking
in the body 1, with the result that the liquid can be absorbed and
kept in the pores of fibers of the absorbing material 6.
[0041] Further, according to the embodiment of the present
invention, a synthetic resin to be drawn into the above-mentioned
fibrous form includes a synthetic resin having a hydrophilic group,
and hence the synthetic resin more effectively attracts the liquid
leaking in the body 1, with the result that the liquid can be
absorbed and kept in the pores of fibers of the absorbing material
6.
[0042] Further, according to the embodiment of the present
invention, the sealing 3 for sealing the opening 2 of the body 1
includes a slide zipper or a seal zipper, and hence operations of
opening and sealing the opening 2 of the body 1 are facilitated. As
a result, when opening the opening 2 of the body 1, dangerous tools
such as scissors and a knife are not needed.
[0043] Further, according to the embodiment of the present
invention, the synthetic resin film forming each of the packing
material sheets 4, 5 is transparent, and hence a state of an object
contained in the body 1 can be recognized from an outside of the
body 1. In a state in which the body 1 is still sealed, for
example, a label or a bar code attached to the object contained in
the body 1 can be recognized from the outside of the body 1.
[0044] In addition, according to the embodiment of the present
invention, the packing material sheets 4, 5 and the absorbing
material 6 are heat-sealed together in the longitudinal direction,
to thereby form the partition sealing part 8 substantially at the
center of the body 1. Accordingly, the absorbing material 6 can be
prevented from bulging in the body 1, and in addition, for example,
two containers containing liquid can be put into one packing bag
separately. Even if the liquid leaks from one of the containers,
the other container separated by the partition sealing part 8 is
not contaminated.
REFERENCE SIGNS LIST
[0045] 1 body [0046] 2 opening [0047] 3 sealing part [0048] 3a
groove for a slide zipper or seal zipper [0049] 3b protruded streak
part [0050] 4, 5 packing material [0051] 6 absorbing material
[0052] 7 side [0053] 8 partition [0054] 9 heat-sealed part
* * * * *