WO2008020776A1 - Collapsible package - Google Patents

Collapsible package Download PDF

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Publication number
WO2008020776A1
WO2008020776A1 PCT/PT2007/000035 PT2007000035W WO2008020776A1 WO 2008020776 A1 WO2008020776 A1 WO 2008020776A1 PT 2007000035 W PT2007000035 W PT 2007000035W WO 2008020776 A1 WO2008020776 A1 WO 2008020776A1
Authority
WO
WIPO (PCT)
Prior art keywords
package
package according
collapsible package
mentioned
collapsible
Prior art date
Application number
PCT/PT2007/000035
Other languages
French (fr)
Inventor
Luis Vargas
Ana Espada
Leonardo Rosado
Original Assignee
Luis Vargas
Ana Espada
Leonardo Rosado
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luis Vargas, Ana Espada, Leonardo Rosado filed Critical Luis Vargas
Publication of WO2008020776A1 publication Critical patent/WO2008020776A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/36—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections
    • B65D5/3607—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections formed by folding or erecting a single blank
    • B65D5/3614—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections formed by folding or erecting a single blank to form a tubular body, at least one of the ends of the body remaining connected
    • B65D5/3628—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to allow collapsing and re-erecting without disengagement of side or bottom connections formed by folding or erecting a single blank to form a tubular body, at least one of the ends of the body remaining connected collapsed along median lines of two opposite sides of the rectangular tubular body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/08—Containers of variable capacity
    • B65D21/086—Collapsible or telescopic containers

Definitions

  • the invention herein described presents a collapsible package that is able to solve the problem identified in the state of the art, namely regarding patent n° PT 102805 of L. Vargas.
  • the present invention minimizes the impacts of material excess that occur when a container based on the bellows system described in PT 102805 transits from an inflated state to a collapsed state, and vice-versa.
  • This invention is able to control the deformations suffered by the package and allow its re-operation, permitting the optimization of logistical processes in transport and storage, throughout the package's life-cycle.
  • the mentioned patent n° PT 102805 of L. Vargas is based on a bellows system comprised exclusively of surfaces which are planar or ⁇ unrollable' (curved in one dimension) . In a package based on this bellows system, all surfaces are at rest when it is fully inflated (Fig. 4 of patent n° PT 102805) or fully collapsed (Fig. 3 of patent n° PT 102805).
  • Figures 2 and 4 of patent n° PT 102805 illustrate a package based on the mentioned bellows system in its inflated configuration. Considering segment 1-3, which presents a length of c, it is observed that it maintains that length when the package is collapsed (Fig. 3 of patent n° PT 102805) .
  • Figure 1 illustrates the bellows system in the instant that it suffers greatest tension, that is, half way through the collapsing process.
  • the mentioned segment 1-3 is, at that moment, confined to a space inferior to its length: J( ⁇ b+ ⁇ c- b) /2) ⁇ 2+ (a/2) * ⁇ 2) ⁇ c.
  • This excess of material, and its consequences concerning the plastic deformations suffered by the package's surfaces, is an issue that was not properly contemplated in patent n° PT of L. Vargas.
  • Fig. 1 General perspective of a package based on a fully collapsible bellows system.
  • Fig. 2 General perspective of a package based on a fully collapsible bellows system, in its inflated configuration.
  • Fig. 3 Frontal view of the package illustrated in Fig. 2, in its inflated configuration.
  • Fig. 4 Frontal view of the package illustrated in Fig. 2, in its collapsed configuration.
  • Fig. 5 Frontal view of the package illustrated in Fig. 2, half way through the collapsing process.
  • Fig. 6 Package A - General perspective.
  • Fig. 7 Package A - Top view.
  • Fig. 8 Package A - Section with the package in its inflated configuration .
  • Fig. 9 Package A - Section with the package half way through the collapsing process.
  • Fig. 10 Package A - Section with the package in its collapsed configuration.
  • Fig. 11 Package B - General perspective.
  • Fig. 12 Package B - Lateral view.
  • Fig. 13 Package B - Section with the package in its inflated configuration .
  • Fig. 14 Package B - Section with the package half way through the collapsing process.
  • Fig. 15 Package B - Section with the package in its collapsed configuration.
  • Fig. 16 Package C - General perspective.
  • Fig. 17 Embalagem C - Lateral view.
  • Fig. 18 Package C - Section with the package in its inflated configuration .
  • Fig. 19 Package C - Section with the package half way- through the collapsing process.
  • Fig. 20 Package C - Section with the package in its collapsed configuration.
  • Fig. 21 Package D - General perspective.
  • Fig. 22 Package D - Lateral view.
  • Fig. 23 Package D - Section with the package in its inflated configuration .
  • Fig. 24 Package D - Section with the package half way through the collapsing process.
  • Fig. 25 Package D - Section with the package in its collapsed configuration.
  • Horizontal extrusion surfaces surfaces that, in the fontal view (Fig. 3) , appear contained in the outer contour of the drawing. They are, as the name suggests, part of an imaginary extrusion in a horizontal direction.
  • Inflated state configuration in which the package is filled with air - as opposed to a collapsed configuration, in which the package is completely folded and without air in its interior .
  • Central flexion line closed line, oriented by the width of the package (dividing it into two symmetrical halves) that, in the frontal view (Fig. 3), appears contained in the outer contour of the drawing.
  • Peripheral flexion lines lines that form the edges of the package. In the lateral view (Fig. 12), they appear contained in lines with an inclination of 45°.
  • Package A is based on a set of parabolic edges (1) , that complement the bellows system comprised in patent n° PT 102805 (Fig. 6) .
  • Figure 7 illustrates a top view of a package based on the mentioned bellows system (in its inflated configuration) , in which the parabolic edges were applied to its 'horizontal extrusion' surfaces.
  • Figures 8 and 9 which illustrate sections of the package (in its inflated configuration and half way through collapsibility, respectively) , it is observed that points 2 and 3 approach one another. This occurrence reduces the tensions involved because the area in question adjusts better to the space it is confined at that particular moment. Aside from reducing the tensions imposed on the material, this solution channels the forces involved to predetermined areas, and in a controlled manner.
  • Package B is based on a set of local depressions (4) , comprised in specific areas of the package's surface, that complement the bellows system described in patent n° PT 102805 (Fig. 11) .
  • Figure 12 illustrates a lateral view of a package based on the mentioned bellows system, in its inflated configuration, in which the local depressions were applied.
  • Figures 13 and 14 which illustrate sections of the package (in its inflated configuration and half way through collapsibility, respectively) , it is observed that points 5 and 6 approach one another. This occurrence reduces the tensions involved because the area in question adjusts better to the space it is confined at that particular moment.
  • this solution channels the forces involved to predetermined areas, preventing plastic deformations and ruptures when the bellows system is operated.
  • the collapsibility of this package may only perform correctly when the mentioned depressions (4) are located on a segment of the central flexion line, so as not to compromise the bellows system's functionality.
  • Package C diverges from the geometric concept of the bellows system comprised in patent n° PT 102805 by transforming the peripheral flexion lines into grooves with variable depth (7) .
  • Figure 16 illustrates a package based on the mentioned bellows system (in its inflated configuration) where the grooves were applied, and that, in the section illustrated in Fig. 17, present an angle oi of 45°.
  • Figures 18 and 19, which illustrate sections of the package (in its inflated configuration and half way through collapsibility, respectively) , it is observed that the distance between points 8 and 9 increases. This occurrence reduces the tensions involved because the area in question adjusts better to the space it is confined at that particular moment. Aside from reducing the tensions imposed on the material, this solution channels the forces involved to predetermined areas, preventing plastic deformations and ruptures when the bellows system is operated.
  • Package D diverges from the geometric concept of the bellows system comprised in patent n c PT 102805 by transforming the peripheral flexion lines into flaps with constant profile (10) .
  • Figure 21 illustrates a package based on the mentioned bellows system (in its inflated configuration) where the flaps were applied, and that, in the section illustrated in
  • Fig. 22 present an angle ⁇ of 90°.
  • Figures 23 and 34 which illustrate sections of the package (in its inflated configuration and half way through collapsibility, respectively) , it is observed that the distance between points 11 and 12 increases. This occurrence reduces the tensions involved because the area in question adjusts better to the space it is confined at that particular moment . Aside from reducing the tensions imposed on the material, this solution channels the forces involved to predetermined areas, preventing plastic deformations and ruptures when the bellows system is operated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)

Abstract

The state of the art in fully collapsible plastic packaging presents a solution that is technically viable for a container to collapse once. However, when the container is reconfigured into its initial inflated shape, deformations and ruptures occur in its material that compromise its ability to contain the product, as well as other requisites intrinsic to its function. The mentioned deformations and ruptures are caused by the excess of material that occurs when a package transits from an inflated state to a collapsed state, and vice-versa. The invention herein described presents a collapsible package with perturbations on its surface (1), (4), (7) or (10), that are able to reduce and control the tensions involved in its collapsibility. By permitting its re-operation, this invention allows the optimization of logistical processes in transport and storage, throughout the package's life-cycle.

Description

DESCRIPTION COLLAPSIBLE PACKAGE
AIM OF THE INVENTION
The invention herein described presents a collapsible package that is able to solve the problem identified in the state of the art, namely regarding patent n° PT 102805 of L. Vargas.
The present invention minimizes the impacts of material excess that occur when a container based on the bellows system described in PT 102805 transits from an inflated state to a collapsed state, and vice-versa.
This invention is able to control the deformations suffered by the package and allow its re-operation, permitting the optimization of logistical processes in transport and storage, throughout the package's life-cycle.
STATE OF THE ART
The state of the art in fully collapsible plastic packaging, specifically patent n° PT 102805 of L. Vargas entitled "Embalagem Colapsavel", presents a solution that is 'technically viable for a container to collapse once.
However, when the container is reconfigured into its initial inflated shape, deformations and ruptures occur in its material that compromise its ability to contain the product, as well as other requisites intrinsic to its function. The solution to this problem will allow, namely, that a package be able to collapse in the pre-filling stage. In other words, it will allow that a package be produced in one place, be 'folded' into a small fraction of its volume and subsequently transported to another site for filling.
The mentioned patent n° PT 102805 of L. Vargas is based on a bellows system comprised exclusively of surfaces which are planar or λunrollable' (curved in one dimension) . In a package based on this bellows system, all surfaces are at rest when it is fully inflated (Fig. 4 of patent n° PT 102805) or fully collapsed (Fig. 3 of patent n° PT 102805).
In the intermediate stage (Fig. 1) , some of the surfaces (horizontally extruded) gather tensions that contribute to the package's dimensional stability (be it inflated or collapsed) . Nevertheless, the intensity of these forces causes plastic deformations which eventually rupture the material, compromising the functionality of the package itself.
Figures 2 and 4 of patent n° PT 102805 illustrate a package based on the mentioned bellows system in its inflated configuration. Considering segment 1-3, which presents a length of c, it is observed that it maintains that length when the package is collapsed (Fig. 3 of patent n° PT 102805) .
Figure 1 illustrates the bellows system in the instant that it suffers greatest tension, that is, half way through the collapsing process. The mentioned segment 1-3 is, at that moment, confined to a space inferior to its length: J({b+{c- b) /2) λ2+ (a/2) *~2) < c. This excess of material, and its consequences concerning the plastic deformations suffered by the package's surfaces, is an issue that was not properly contemplated in patent n° PT of L. Vargas.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1: General perspective of a package based on a fully collapsible bellows system.
Fig. 2: General perspective of a package based on a fully collapsible bellows system, in its inflated configuration.
Fig. 3: Frontal view of the package illustrated in Fig. 2, in its inflated configuration.
Fig. 4: Frontal view of the package illustrated in Fig. 2, in its collapsed configuration.
Fig. 5: Frontal view of the package illustrated in Fig. 2, half way through the collapsing process.
Fig. 6: Package A - General perspective.
Fig. 7: Package A - Top view.
Fig. 8: Package A - Section with the package in its inflated configuration .
Fig. 9: Package A - Section with the package half way through the collapsing process. Fig. 10: Package A - Section with the package in its collapsed configuration.
Fig. 11: Package B - General perspective.
Fig. 12: Package B - Lateral view.
Fig. 13: Package B - Section with the package in its inflated configuration .
Fig. 14: Package B - Section with the package half way through the collapsing process.
Fig. 15: Package B - Section with the package in its collapsed configuration.
Fig. 16: Package C - General perspective.
Fig. 17: Embalagem C - Lateral view.
Fig. 18: Package C - Section with the package in its inflated configuration .
Fig. 19: Package C - Section with the package half way- through the collapsing process.
Fig. 20: Package C - Section with the package in its collapsed configuration.
Fig. 21: Package D - General perspective.
Fig. 22: Package D - Lateral view. Fig. 23: Package D - Section with the package in its inflated configuration .
Fig. 24: Package D - Section with the package half way through the collapsing process.
Fig. 25: Package D - Section with the package in its collapsed configuration.
TERMINOLOGY
Vertical extrusion surfaces: surfaces that, in the top view (Fig. 7) , appear contained in the outer contour of the drawing. They are, as the name suggests, part of an imaginary extrusion in a vertical direction.
Horizontal extrusion surfaces: surfaces that, in the fontal view (Fig. 3) , appear contained in the outer contour of the drawing. They are, as the name suggests, part of an imaginary extrusion in a horizontal direction.
Inflated state: configuration in which the package is filled with air - as opposed to a collapsed configuration, in which the package is completely folded and without air in its interior .
Central flexion line: closed line, oriented by the width of the package (dividing it into two symmetrical halves) that, in the frontal view (Fig. 3), appears contained in the outer contour of the drawing. Peripheral flexion lines: lines that form the edges of the package. In the lateral view (Fig. 12), they appear contained in lines with an inclination of 45°.
DETAILED DESCRIPTION
Package A:
Package A is based on a set of parabolic edges (1) , that complement the bellows system comprised in patent n° PT 102805 (Fig. 6) . Figure 7 illustrates a top view of a package based on the mentioned bellows system (in its inflated configuration) , in which the parabolic edges were applied to its 'horizontal extrusion' surfaces. In Figures 8 and 9, which illustrate sections of the package (in its inflated configuration and half way through collapsibility, respectively) , it is observed that points 2 and 3 approach one another. This occurrence reduces the tensions involved because the area in question adjusts better to the space it is confined at that particular moment. Aside from reducing the tensions imposed on the material, this solution channels the forces involved to predetermined areas, and in a controlled manner.
Package B :
Package B is based on a set of local depressions (4) , comprised in specific areas of the package's surface, that complement the bellows system described in patent n° PT 102805 (Fig. 11) . Figure 12 illustrates a lateral view of a package based on the mentioned bellows system, in its inflated configuration, in which the local depressions were applied. In Figures 13 and 14, which illustrate sections of the package (in its inflated configuration and half way through collapsibility, respectively) , it is observed that points 5 and 6 approach one another. This occurrence reduces the tensions involved because the area in question adjusts better to the space it is confined at that particular moment. Aside from reducing the tensions imposed on the material, this solution channels the forces involved to predetermined areas, preventing plastic deformations and ruptures when the bellows system is operated. The collapsibility of this package may only perform correctly when the mentioned depressions (4) are located on a segment of the central flexion line, so as not to compromise the bellows system's functionality.
Package C :
Package C diverges from the geometric concept of the bellows system comprised in patent n° PT 102805 by transforming the peripheral flexion lines into grooves with variable depth (7) . Figure 16 illustrates a package based on the mentioned bellows system (in its inflated configuration) where the grooves were applied, and that, in the section illustrated in Fig. 17, present an angle oi of 45°. In Figures 18 and 19, which illustrate sections of the package (in its inflated configuration and half way through collapsibility, respectively) , it is observed that the distance between points 8 and 9 increases. This occurrence reduces the tensions involved because the area in question adjusts better to the space it is confined at that particular moment. Aside from reducing the tensions imposed on the material, this solution channels the forces involved to predetermined areas, preventing plastic deformations and ruptures when the bellows system is operated.
Package D :
Package D diverges from the geometric concept of the bellows system comprised in patent nc PT 102805 by transforming the peripheral flexion lines into flaps with constant profile (10) . Figure 21 illustrates a package based on the mentioned bellows system (in its inflated configuration) where the flaps were applied, and that, in the section illustrated in
Fig. 22, present an angle β of 90°. In Figures 23 and 34, which illustrate sections of the package (in its inflated configuration and half way through collapsibility, respectively) , it is observed that the distance between points 11 and 12 increases. This occurrence reduces the tensions involved because the area in question adjusts better to the space it is confined at that particular moment . Aside from reducing the tensions imposed on the material, this solution channels the forces involved to predetermined areas, preventing plastic deformations and ruptures when the bellows system is operated.
The four solutions presented intend to complement the mentioned bellows system, when applied to a package in plastic or other materials, produced through blow-molding or by any other processes. -08-2007

Claims

1. Collapsible package characterized by comprising superficial perturbations (1) , (4) , (7) or (10) , capable of reducing and controlling the tensions involved in its collapsibility
2. Collapsible package according to claim 1, characterized by comprising a set of parabolic edges (1)
3. Collapsible package according to claim 2, characterized by comprising on or more of the mentioned parabolic edges (1)
4. Collapsible package according to claim 3, characterized by the mentioned parabolic edges (1) being pairs in a convergent or divergent configuration.
5. Collapsible package according to claim 3, characterized by the mentioned parabolic edges (1) being of a curvilinear or straight geometry.
6. Collapsible package according to claim 1, characterized by comprising a set of local depressions (4) placed along the central flexion line.
7. Collapsible package according to claim 5, characterized by comprising one or more of the mentioned depressions (4) .
8. Collapsible package according to claim 6, characterized by the mentioned perturbations (4) being saliencies in relation to the package's body.
9. Collapsible package according to claim 1, characterized by comprising a set of grooves with variable depth (7) , placed along the peripheral flexion lines, and with an angle a of 45° .
10. Collapsible package according to claim 8, characterized by the depth of the mentioned grooves (7) being constant.
11. Collapsible package according to claim 9, characterized by the angle of the mentioned grooves (7) being different than a .
12. Collapsible package according to claim 1, characterized by comprising a set of constant profile flaps (10) , placed along the peripheral flexion lines, and with an angle β of 90° .
13. Collapsible package according to claim 11, characterized by the depth of the mentioned flaps (10) being variable.
14. Collapsible package according to claim 12, characterized by the angle of the mentioned flaps (10) being different than
P.
15. Collapsible package according to any of the aforementioned claims, characterized by being produced in plastic or in any other materials.
16. Collapsible package according to any of the aforementioned claims, characterized by being produced through blow molding or by any other processes .
17-08-2007
PCT/PT2007/000035 2006-08-17 2007-08-17 Collapsible package WO2008020776A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT103553 2006-08-17
PT10355306A PT103553B (en) 2006-08-17 2006-08-17 METHOD OF REDUCTION AND CONTROL DS TENSIONS INVOLVED IN THE COLAPSIBILITY OF A TOTALLY COLAPSIBLE PACKAGING

Publications (1)

Publication Number Publication Date
WO2008020776A1 true WO2008020776A1 (en) 2008-02-21

Family

ID=38734255

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PT2007/000035 WO2008020776A1 (en) 2006-08-17 2007-08-17 Collapsible package

Country Status (2)

Country Link
PT (1) PT103553B (en)
WO (1) WO2008020776A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190031499A (en) * 2016-07-26 2019-03-26 고쿠리츠다이가쿠호우진 야마구치 다이가쿠 Fountain seat

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10230919A (en) * 1997-02-19 1998-09-02 Yoshino Kogyosho Co Ltd Plastic bottle
JP2000190935A (en) * 1998-12-28 2000-07-11 Dainippon Printing Co Ltd Easily volume-reducible synthetic resin container
JP2000289728A (en) * 1999-04-08 2000-10-17 Kao Corp Container
JP2001072030A (en) * 1999-08-31 2001-03-21 Yoshino Kogyosho Co Ltd Easily foldable hollow container
PT102805A (en) * 2002-07-09 2004-01-30 Luis Antonio Bento Paul Vargas COLAPSAVEL PACKAGING
DE202004007850U1 (en) * 2004-05-05 2004-07-22 A&R Carton Gmbh shipping container
GB2410939A (en) * 2004-02-12 2005-08-17 Field Group Plc Cartons
WO2006047736A2 (en) * 2004-10-27 2006-05-04 Meadwestvaco Packaging Systems Llc Dispensing carton
WO2006047274A1 (en) * 2004-10-23 2006-05-04 The Coca-Cola Company A structure of collapsible blow molded container

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10230919A (en) * 1997-02-19 1998-09-02 Yoshino Kogyosho Co Ltd Plastic bottle
JP2000190935A (en) * 1998-12-28 2000-07-11 Dainippon Printing Co Ltd Easily volume-reducible synthetic resin container
JP2000289728A (en) * 1999-04-08 2000-10-17 Kao Corp Container
JP2001072030A (en) * 1999-08-31 2001-03-21 Yoshino Kogyosho Co Ltd Easily foldable hollow container
PT102805A (en) * 2002-07-09 2004-01-30 Luis Antonio Bento Paul Vargas COLAPSAVEL PACKAGING
GB2410939A (en) * 2004-02-12 2005-08-17 Field Group Plc Cartons
DE202004007850U1 (en) * 2004-05-05 2004-07-22 A&R Carton Gmbh shipping container
WO2006047274A1 (en) * 2004-10-23 2006-05-04 The Coca-Cola Company A structure of collapsible blow molded container
WO2006047736A2 (en) * 2004-10-27 2006-05-04 Meadwestvaco Packaging Systems Llc Dispensing carton

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190031499A (en) * 2016-07-26 2019-03-26 고쿠리츠다이가쿠호우진 야마구치 다이가쿠 Fountain seat
US11272907B2 (en) * 2016-07-26 2022-03-15 Yamaguchi University Feces sampling sheet
KR102521462B1 (en) * 2016-07-26 2023-04-12 고쿠리츠다이가쿠호우진 야마구치 다이가쿠 feces collection sheet

Also Published As

Publication number Publication date
PT103553B (en) 2007-08-09
PT103553A (en) 2007-01-31

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