CA1056347A - Pouch usable as a cup and a method of producing the same - Google Patents
Pouch usable as a cup and a method of producing the sameInfo
- Publication number
- CA1056347A CA1056347A CA285,889A CA285889A CA1056347A CA 1056347 A CA1056347 A CA 1056347A CA 285889 A CA285889 A CA 285889A CA 1056347 A CA1056347 A CA 1056347A
- Authority
- CA
- Canada
- Prior art keywords
- sheet
- pouch
- cup
- sheets
- inner sheet
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Landscapes
- Packages (AREA)
Abstract
Abstract of the Disclosure A pouch usable as a cup comprising a rigid outer sheet and a flexible inner sheet laminated on the inner surface of the outer sheet which are holded to form a pouch. The bottom of the inner sheet is exposed from the bottom of the outer sheet whereby the outer sheet is deformed by pressing the side edges thereof to expand the bottom of the inner sheet to form a cup.
Description
lOS6347 This invention relates to a pouch usable as a cup, which has fillings sealed therein and is cut off to provide an opening of the resultant cup and a method of producing the same.
Recently, a pouch made of a synthetic resin film, which is capable of standing firm on a flat plane with food or the like housed therein, has come to be used widely. Such a pouch, however, is enabled to stand by itself with food, etc. housed therein. To be more specific, the pouch of this type quite differs from the one intended to act as a cup when a liquid such as water has been poured thereinto from an opening provided by cutting off the upper end portion thereof.
The ~nown pouch mentioned has the side wall and the bottom made of the same material or materials similar to each other.
Thus, if made of a soft, flexible material, the side wall of the pouch is too soft to enable the pouch to provide a cup, i.e. a structure capable of standing by itself when water, etcO has been poured thereinto. In addition, the bottom of the pouch is prepared by inwardly folding the lower end portion of the material sheet, resulting in that the bottom is of double wall structure. It follows that a powdered fruit juice or the like sealed in the pouch enters the clearance between the superposed sheets at the bottom.
This presents a difficulty that, when a liquid like water has been poured into the pouch, a good mixing can not be achieved between the powder and the liquid.
An object of this invention is to provide a pouch having the bottom of a single wall structure and capable of readily spreading into a shape of a cup. -Another object is to provide a method of producins a pouch usable ~s a cup. --According to this invention, the pouch used as a cup is capable of standing firm on a flat plane, for example, on a table.
; In addition, the method of producing the pouch is very simple.
This invention ~an be more fully understood from the following detailed description when taken in conjunction with the accompanying drawingsr in which.
Fig. 1 is a plan view showing a part of the outer sheet of a pouch according to one embodiment of this invention;
Fig. 2 is a cross sectional view along the line II-II of Fig. 1, showing a state in which an inner sheet is bonded to the outer sheet;
Fig. 3 is a cross sectional view showing a state in which the bonded sheets cut off along a broken line 7 of Fig. 1 are partly folded and observed in the direction of arrows III of Fig. 2;, Fi~. 4 is a front view of the resultant pouch;
Fig. 5 is an oblique view showing the pouch of Fig. 4 used as a cup; and Fig. 6 is a front view of a pouch according to another embodi-- ment of this invention.
There will now be described one embodiment of the present invention with reference to the drawings.
As shown in Fig. 1, an outer sheet 1 having a reasonable rigidity, made of, for example, thick paper is provided with a number of long central slits 2 equidistantly formed along the ; central line of the sheet 1. Other slits 3 and 4 are also formed at the upper and lower end portions of the outer sheet, respectively.
These slits 2, 3 and 4 may be equal to each other in length. In addition, when the outex sheet has been folded along the central line, the slits 3 and 4 are overlapped with each other.
The inner face of the outer sheet 1 is partially coated with silicone 5, the coated portion being in the form of an allipse with the slit 2 providing the major axis as shown in Fig. 1. An inner sheet 6 (Fig. 2) made of thermoplastic synthetic resin, for example, polyethylene is thermally fused to the inner face of the outer ; sheet 1 so as to provide a laminate. In this case, the inner sheet 6 is not bonded to the silicone-coated portion of the outer sheet.
Recently, a pouch made of a synthetic resin film, which is capable of standing firm on a flat plane with food or the like housed therein, has come to be used widely. Such a pouch, however, is enabled to stand by itself with food, etc. housed therein. To be more specific, the pouch of this type quite differs from the one intended to act as a cup when a liquid such as water has been poured thereinto from an opening provided by cutting off the upper end portion thereof.
The ~nown pouch mentioned has the side wall and the bottom made of the same material or materials similar to each other.
Thus, if made of a soft, flexible material, the side wall of the pouch is too soft to enable the pouch to provide a cup, i.e. a structure capable of standing by itself when water, etcO has been poured thereinto. In addition, the bottom of the pouch is prepared by inwardly folding the lower end portion of the material sheet, resulting in that the bottom is of double wall structure. It follows that a powdered fruit juice or the like sealed in the pouch enters the clearance between the superposed sheets at the bottom.
This presents a difficulty that, when a liquid like water has been poured into the pouch, a good mixing can not be achieved between the powder and the liquid.
An object of this invention is to provide a pouch having the bottom of a single wall structure and capable of readily spreading into a shape of a cup. -Another object is to provide a method of producins a pouch usable ~s a cup. --According to this invention, the pouch used as a cup is capable of standing firm on a flat plane, for example, on a table.
; In addition, the method of producing the pouch is very simple.
This invention ~an be more fully understood from the following detailed description when taken in conjunction with the accompanying drawingsr in which.
Fig. 1 is a plan view showing a part of the outer sheet of a pouch according to one embodiment of this invention;
Fig. 2 is a cross sectional view along the line II-II of Fig. 1, showing a state in which an inner sheet is bonded to the outer sheet;
Fig. 3 is a cross sectional view showing a state in which the bonded sheets cut off along a broken line 7 of Fig. 1 are partly folded and observed in the direction of arrows III of Fig. 2;, Fi~. 4 is a front view of the resultant pouch;
Fig. 5 is an oblique view showing the pouch of Fig. 4 used as a cup; and Fig. 6 is a front view of a pouch according to another embodi-- ment of this invention.
There will now be described one embodiment of the present invention with reference to the drawings.
As shown in Fig. 1, an outer sheet 1 having a reasonable rigidity, made of, for example, thick paper is provided with a number of long central slits 2 equidistantly formed along the ; central line of the sheet 1. Other slits 3 and 4 are also formed at the upper and lower end portions of the outer sheet, respectively.
These slits 2, 3 and 4 may be equal to each other in length. In addition, when the outex sheet has been folded along the central line, the slits 3 and 4 are overlapped with each other.
The inner face of the outer sheet 1 is partially coated with silicone 5, the coated portion being in the form of an allipse with the slit 2 providing the major axis as shown in Fig. 1. An inner sheet 6 (Fig. 2) made of thermoplastic synthetic resin, for example, polyethylene is thermally fused to the inner face of the outer ; sheet 1 so as to provide a laminate. In this case, the inner sheet 6 is not bonded to the silicone-coated portion of the outer sheet.
- 2 -,, , . ~
The laminate is cut off along dotted lines 7, 7 to b~ divided into a plurality of small laminations~ Each small lamination is folded along the central line, i.e. along the slit 2, in a manner that the inner sheet 6 is positioned inside as shown in Fig. 3.
Naturally, the folded portions are entirely overlapped and, thus, overlapping takes place between the slits 3 and ~O The folded laminate is then thermally fused at opposite side edges, the fused portion reaching the ends of the slits 2, 3 and 4. As readily seen from Fig. 4, the thermal fusion results in a bag of the laminate having an opening at the upper edge. The bag thus prepared is loaded with food such as powdered fruit juice or powdered coffee, followed by sealing the upper opening by thermal fusionO Finally, a cutting portion 8 is formed at the upper end portion to extend near the end of the overlapped slits 3, ~. Apparently, the cutting portion 8 and the overlapped slits 3, ~ are intended to facilitate the cutting of the upper end portion of the pouch.
When it is intended to prepare a drink using the powdered --material sealed in the pouch, the upper end portion of the pouch is cut away first from the cutting portion 8 so as to provide an upper opening (or inlet). In this case, the overlapped slits 3 and ~
serve to provide a neat cutting of the upper end portion of the pouch, along the straight line. When pressed by fingers in the direction as shown by arrows in Fig. 5, the pouch having the upper opening is turned into a cup capable of standing firm on a flat plane even when filled with cold water or hot water for preparing a d~sired drink.
The thermally fused opposite side edge portions of the cup is about twice as thick as the circumferential wall of the cup, because the edge portions mentioned are prepared by thermally fusing the ~30 double-folded laminate of the inner and outer sheets~ Naturally, the edge portions are more rigid than the circumferential wallO
This rigidity facilitates the turning of the pouch into a cup when pressed by fingers. In addition, the edge portions act as a grip .~ 3 .
.~ .
10563~7 of the resultant cup. What is of high importance in this invention is that the bottom of the resultant cup is constituted by the inner -sheet 6 alone. As described previously, the outer sheet 1 is provided with the central slit 2 and coated with silicone 5 around the slit 2. Because of the provision of the slit 2, the rigid outer sheet constitutes the circumferential wall portion alone of the resultant cup. In addition, the flexible inner sheet is not bonded to the outer sheet at the silicone-coated portion as described previously.
It follows that the bottom of the cup is constituted by the flexible inner sheet alone. Naturally, the bottom is of a single wall structure and capable of readily spreading outward.
As described in detail, the pouch according to this invention is usable as a cup. No difficulty is involved in expanding the pouch into the shape of a cup. In addition, the resultant cup is capable of standing firm on a flat plane because the rigid outer sheet provides the periphery of the bottom of the cup. An addi-tional merit to be noted is that the fused portions of the laminated outer and inner sheets perform a heat insulating function particu-larly when a hot water is poured into the cup, rendering it easierto hold the cup at the grip provided by the fused portions. Of course, the process of producing the pouch is very simple and, thus, suitable for a large scale production of the pouches.
In the embodiment described, a thick paper and a thin synthetic resin sheet or film were used as the outer sheet and the inner sheet, respectively. But, the materials of the sheets need not be restricted to those mentioned, provided that the inner sheet should be relatively flexible and the outer sheet should have a reasonable rigidity. The silicone used for preventing the bonding o~ the ;30 inner and outer sheets can also be replaced by another suitable substance depending on the materials actually used as the inner and outer sheets. In the embodiment described, the silicone was - coated on the outer sheet in an elliptical shape. But, a substance for preventing the bonding of the sheets may be coated in another shape, for example, in a rectangular shape on the inner sheet, not -on the outer sheet. Further, such a substance is not necessarily coated if the inner sheet and the outer sheet are selectively fused thermally so as to leave 2 desired portion unfused.
Fig. 6 shows another embodiment of this invention. The pouch shown in Fig. 6 differs from the one previously described simply in that an outer sheet is provided with an elliptical opening at the center in contrast to the central slit 2. ~he pouch of this type is slightly inferior to the one previously described in the capa-bility of standing firm or a flat plane, but is fully satisfactory in actual uses~ It is seen that the lower end of the ollter sheet 1 pre~ents a semicircular curve in the folded state of the pouchO
When expanded to provide a cup, the lower ends of the fused portions alone are brought in direct contact with a flat plane. Needless to say, it is unnecessary to use a substance for preventing tha bonding of the inner and outer sheets in the embodiment of Fig. 6.
- ~ . : . . . .
The laminate is cut off along dotted lines 7, 7 to b~ divided into a plurality of small laminations~ Each small lamination is folded along the central line, i.e. along the slit 2, in a manner that the inner sheet 6 is positioned inside as shown in Fig. 3.
Naturally, the folded portions are entirely overlapped and, thus, overlapping takes place between the slits 3 and ~O The folded laminate is then thermally fused at opposite side edges, the fused portion reaching the ends of the slits 2, 3 and 4. As readily seen from Fig. 4, the thermal fusion results in a bag of the laminate having an opening at the upper edge. The bag thus prepared is loaded with food such as powdered fruit juice or powdered coffee, followed by sealing the upper opening by thermal fusionO Finally, a cutting portion 8 is formed at the upper end portion to extend near the end of the overlapped slits 3, ~. Apparently, the cutting portion 8 and the overlapped slits 3, ~ are intended to facilitate the cutting of the upper end portion of the pouch.
When it is intended to prepare a drink using the powdered --material sealed in the pouch, the upper end portion of the pouch is cut away first from the cutting portion 8 so as to provide an upper opening (or inlet). In this case, the overlapped slits 3 and ~
serve to provide a neat cutting of the upper end portion of the pouch, along the straight line. When pressed by fingers in the direction as shown by arrows in Fig. 5, the pouch having the upper opening is turned into a cup capable of standing firm on a flat plane even when filled with cold water or hot water for preparing a d~sired drink.
The thermally fused opposite side edge portions of the cup is about twice as thick as the circumferential wall of the cup, because the edge portions mentioned are prepared by thermally fusing the ~30 double-folded laminate of the inner and outer sheets~ Naturally, the edge portions are more rigid than the circumferential wallO
This rigidity facilitates the turning of the pouch into a cup when pressed by fingers. In addition, the edge portions act as a grip .~ 3 .
.~ .
10563~7 of the resultant cup. What is of high importance in this invention is that the bottom of the resultant cup is constituted by the inner -sheet 6 alone. As described previously, the outer sheet 1 is provided with the central slit 2 and coated with silicone 5 around the slit 2. Because of the provision of the slit 2, the rigid outer sheet constitutes the circumferential wall portion alone of the resultant cup. In addition, the flexible inner sheet is not bonded to the outer sheet at the silicone-coated portion as described previously.
It follows that the bottom of the cup is constituted by the flexible inner sheet alone. Naturally, the bottom is of a single wall structure and capable of readily spreading outward.
As described in detail, the pouch according to this invention is usable as a cup. No difficulty is involved in expanding the pouch into the shape of a cup. In addition, the resultant cup is capable of standing firm on a flat plane because the rigid outer sheet provides the periphery of the bottom of the cup. An addi-tional merit to be noted is that the fused portions of the laminated outer and inner sheets perform a heat insulating function particu-larly when a hot water is poured into the cup, rendering it easierto hold the cup at the grip provided by the fused portions. Of course, the process of producing the pouch is very simple and, thus, suitable for a large scale production of the pouches.
In the embodiment described, a thick paper and a thin synthetic resin sheet or film were used as the outer sheet and the inner sheet, respectively. But, the materials of the sheets need not be restricted to those mentioned, provided that the inner sheet should be relatively flexible and the outer sheet should have a reasonable rigidity. The silicone used for preventing the bonding o~ the ;30 inner and outer sheets can also be replaced by another suitable substance depending on the materials actually used as the inner and outer sheets. In the embodiment described, the silicone was - coated on the outer sheet in an elliptical shape. But, a substance for preventing the bonding of the sheets may be coated in another shape, for example, in a rectangular shape on the inner sheet, not -on the outer sheet. Further, such a substance is not necessarily coated if the inner sheet and the outer sheet are selectively fused thermally so as to leave 2 desired portion unfused.
Fig. 6 shows another embodiment of this invention. The pouch shown in Fig. 6 differs from the one previously described simply in that an outer sheet is provided with an elliptical opening at the center in contrast to the central slit 2. ~he pouch of this type is slightly inferior to the one previously described in the capa-bility of standing firm or a flat plane, but is fully satisfactory in actual uses~ It is seen that the lower end of the ollter sheet 1 pre~ents a semicircular curve in the folded state of the pouchO
When expanded to provide a cup, the lower ends of the fused portions alone are brought in direct contact with a flat plane. Needless to say, it is unnecessary to use a substance for preventing tha bonding of the inner and outer sheets in the embodiment of Fig. 6.
- ~ . : . . . .
Claims (9)
1. A pouch usable as a cup comprising a pair of rigid outer sheets facing each other and having side edges attached to each other and lower edges separated with each other and a flexible inner sheet laminated on the inside of the outer sheets and having a bottom exposed from the lower edges of the outer sheets, whereby in the case of using as the cup, the outer sheets are deformed outwardly by pressing the side edges thereof to expand the bottom of the inner sheet.
2. A pouch according to claim 1 wherein the inner sheet includes a liquid proof sheet.
3. A pouch according to claim 2 wherein the outer sheets include upper edges attached to each other.
4. A pouch according to claim 3 wherein the outer sheets include slits extending along and near the upper edges of the outer sheets and facing each other, and a cutting portion formed in the side edges of the outer sheets facing the slits.
5. A pouch according to claim 2 wherein the lower edges of the outer sheets have the same plane to form an outer circular edge of the cup.
6. A pouch usable as a cup according to claim 5 wherein the outer sheet is made of a thick paper.
7. A method of producing a pouch usable as a cup, comprising the steps of providing an opening at the central portion of a flat outer sheet having a reasonable rigidity, bonding an inner sheet having a reasonable flexibility to the inner face of the outer sheet, said bonding being not effected around the opening of the outer sheet, folding the bonded sheets at the center, and bonding the periphery of the folded sheets except the bottom portion of the resultant pouch at which the inner sheet is not bonded to the outer sheet.
8. A method according to claim 7 wherein the opening provided at the central portion of the outer sheet is a long, slender slit and the inner sheet is not bonded to the outer sheet at the ellip-tical portion with the slit providing the major axis of the ellipse.
9. A method according to claim 7 wherein the opening provided at the central portion of the outer sheet is elliptical and the inner sheet corresponding to the elliptical opening provides the bottom of the resultant cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA285,889A CA1056347A (en) | 1977-08-31 | 1977-08-31 | Pouch usable as a cup and a method of producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA285,889A CA1056347A (en) | 1977-08-31 | 1977-08-31 | Pouch usable as a cup and a method of producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1056347A true CA1056347A (en) | 1979-06-12 |
Family
ID=4109441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA285,889A Expired CA1056347A (en) | 1977-08-31 | 1977-08-31 | Pouch usable as a cup and a method of producing the same |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1056347A (en) |
-
1977
- 1977-08-31 CA CA285,889A patent/CA1056347A/en not_active Expired
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