WO2008002041A1

WO2008002041A1 - Packaging case for disposable compressed tissue and manufacturing method thereof

Info

Publication number: WO2008002041A1
Application number: PCT/KR2007/003064
Authority: WO
Inventors: Dongwon Seo
Original assignee: Dongwon Seo
Priority date: 2006-06-29
Filing date: 2007-06-25
Publication date: 2008-01-03
Also published as: JP2009542530A; KR20060085223A; KR100746960B1; EP2040593A1; US20090308776A1

Abstract

A packaging case for disposable compressed tissues is provided, which includes: a first accommodation portion which accommodates liquid; a second accommodation portion which has a stepped portion on the upper portion of the first accommodation portion so that the cross- sectional area of the second accommodation portion is larger than that of the first accommodation portion, and is partitioned from the first accommodation portion by a separable film which is thermally fused on the stepped portion by a thermal fusion operation, to thus ac¬ commodate tissues which have been compressed and dried; and a cover film which covers the upper portion of the second accommodation portion, wherein a bursting strength of the cover film is larger than that of the separable film when pressurized, so that the separable film is bursted before the cover film is bursted when pressurized.

Description

PACKAGING CASE FOR DISPOSABLE COMPRESSED TISSUE AND MANUFACTURING METHOD THEREOF

Technical Field

[1] The present invention relates to a packaging case for disposable compressed tissues, and more particularly, to a packaging case for disposable compressed tissues and a manufacturing method thereof, in which compressed tissues are packaged in large quantity more easily with liquid and a user can use the liquid-absorbed compressed tissues conveniently without spraying liquid by pressurization. Background Art

[2] In general, a disposable compressed tissue is made by compressing and molding a pulp material such as rayon. If predetermined liquid such as water is added to the disposable compressed tissue, the compressed and molded tissue absorbs the liquid and is restored into a previous state, that is, a before-being-compressed state, to thereby make a user simply use tissues conveniently.

[3] However, to use the compressed tissues, water or functional liquid should be always equipped separately. Accordingly, to solve the above-described problem, the Korean Patent Application Nos. 10-2003-94198 on December 20, 2003 (corresponding to Korean Patent Laid-open Publication No. 10-2005-48446 on May 24, 2005) and 10-2003-91984 on December 16, 2003 (corresponding to Korean Patent Laid-open Publication No. 10-2005-60377 on June 22, 2005), the Korean Utility-model Application Nos. 20-2005-17861 on June 21, 2005 (corresponding to Korean Utility- model Registration No. 20-395866 on September 7, 2005) and 20-2005-23428 on August 12, 2005 (corresponding to Korean Utility-model Registration No. 20-0400633 on November 01, 2005), and the Japanese Patent Application No. 2000-223676 on July 25, 2000 (corresponding to Japanese Patent Laid-open Publication No. 2002-37350 on February 6, 2002) were filed and disclosed.

[4] Hereinbelow, a conventional packaging case for disposable compressed tissue

(Korean Patent Application No. 10-2003-91984) will be described.

[5] FIGS. 1 through 8 are a cross-sectional view showing a conventional disposable tissue packaging case, respectively.

[6] As illustrated in FIG. 1, a conventional disposable tissue packaging case includes an upper member 10 having a tissue storage portion 11 which stores tissues 1, a lower member 20 which is attached in opposition to the upper member 10 and has a liquid storage portion 21 which stores liquid 2, and an intermediate member 30 which isolates the liquid 2 from the tissue 1 between the upper member 10 and the lower member 20. [7] In addition, as illustrated in FIG. 2, a conventional disposable tissue packaging case includes a lower member 20 which has a liquid storage portion 21 which stores liquid 2, an upper member 10 which is attached to the upper portion of the lower member 20 and has a tissue storage portion 11 which is incorporated in the inside of the liquid storage portion 21 and stores tissues 1, and a cover film 40 which is adhered to the upper side of the upper member 10 and seals the tissue storage portion 11 tightly.

[8] However, the upper member 10 and the lower member 20 are formed in a separate casing, respectively, and a separation guidance unit (not shown) should be separately formed in order to make it easy to attach the upper member 10 to and detach the upper member 10 from the lower member 20. As a result, expense and inconveniences of removal and recollection may increase. Further, there is a problem that the manufacturing processes thereof are not also accomplished in the block.

[9] As illustrated in FIGS. 3 and 4, a respective conventional disposable tissue packaging case includes a storage portion 50. In FIG. 3, the storage portion 50 stores tissues 1 and a liquid tube 60 containing liquid 2. In FIG. 4, the storage portion 50 stores tissues 1 and a liquid case 70 containing liquid 2.

[10] However, it is burdensome that the liquid tube 60 or the liquid case 70 should be separately manufactured, and thus there is a problem that the production cost is increased. Further, when a certain amount of pressure is applied to break the liquid tube 60 or the liquid case 70 in the disposable tissue packaging case, the cover film 40 of the storage portion 50 may be damaged together.

[11] In addition, in the case of the disposable tissue packaging cases shown in FIGS. 3 and 4, cross sections of the storage spaces (including the storage portions 50 which respectively store the liquid tube 60 or the liquid case 70 together with the tissues) where the liquid 2 and the tissues 1 are stored are almost identical with each other. Accordingly, if a certain amount of pressure is applied to the lower portion of the storage portion 50 in order to separate the liquid 2 from the liquid tube 60 or liquid case 70 containing the liquid 2, the pressure applied to the pressurization region of the storage portion 50 acts more greatly to the cover film 40 than the liquid tube 60 or liquid case 70. As a result, there is a problem that the cover film 40 explodes in advance before the liquid 2 is detached from the liquid tube 60 or liquid case 70 containing the liquid 2.

[12] In addition, as illustrated in FIG. 5, a conventional disposable tissue packaging case is formed of a sealing unit 80 which includes a liquid storage portion 21, a tissue storage portion 11, a liquid passage portion 22 which is formed between the liquid storage portion 21 and the tissue storage portion 11, and a stopper member 23 which is inserted in the liquid passage portion 22. However, it is very complicated and inconvenient to seal up the liquid storage portion 21 and the liquid passage portion 22 after having stored the liquid 2 in the liquid storage portion 21 and having inserted the stopper member 23 into the liquid passage portion 22.

[13] In addition, as illustrated in FIG. 6, a conventional disposable tissue packaging case is formed of an envelope 90 made of a synthetic resin material. Tissues 1 and a liquid tube 60 are contained in the envelope 90 in a sealed manner. However, it is burdensome that the liquid tube 60 should be separately manufactured. Further, there is a problem that the production cost is increased since the liquid tube 60 should be separately manufactured, and the envelope 90 may be damaged by external pressure.

[14] In addition, as illustrated in FIG. 7, a conventional disposable tissue packaging case is formed of a case 800 which is divided into a lower space 820 and an upper space 830 by an intermediate film 810 which is located across the inner walls of the case 800. Here, water is contained in the lower space 820 and tissues are contained in the upper space 830. A cover film 840 is provided on the upper portion of the case 800, in order to cover the case 800.

[15] In this case, although it is described that the intermediate film 810 is located across the inner walls of the case 800, it is not so easy to make the intermediate film 810 fixed to be located across the inner walls of the case 800. Accordingly, it is not so easy to mass-produce the disposable tissue packaging cases by automation, and it is difficult to efficiently use the disposable tissue packaging case. Even if the intermediate film is fixed across the inner walls of the case 800 using an adhesive, an adhesion area on either inner wall corresponds to the thickness of the intermediate film. As a result, the adhesion areas against aqueous solution are so small, and thus water-tightness cannot be secured against the aqueous solution.

[16] Moreover, in the case that the disposable tissue packaging case is pressurized from the top and bottom of the case 800, internal volume in the case 800 is decreased, and internal pressure in the case 800 is increased. That is, the internal pressure in the case 800 becomes higher than the external atmospheric pressure (1 atm). For example, the internal pressure in the case 800 becomes 1.2 atm or higher. Accordingly, in the case that both the intermediate film and the cover film are broken, there is a problem that the high-pressure aqueous solution is sprayed out as if water-outburst happens when a balloon filled with water is pressurized and bored. This phenomenon is called a balloon effect.

[17] The Japanese Patent Application No. 2000-223676 on July 25, 2000 (corresponding to Japanese Patent Laid-open Publication No. 2002-37350 on February 6, 2002) discloses a conventional "double-type separable portable tissue case" 6 as illustrated in FIG. 8. Here, one end 8b of an intermediate film 8 that separates the upper and lower portions of the tissue case 6 is extended to the upper surface 6c of the tissue case 6, and the respective ends 7b and 8b of a cover film 7 and the intermediate film 8 are integrally attached. That is, the extended end 8b of the intermediate film 8 and the end 7b of the cover film 7 which is integrally bonded to the end 8b of the intermediate film 8 are caught by hand and raised in the direction of an arrow F (about 90°upwards) and then pulled up in the direction of an arrow G (in the counterclockwise in FIG. 8), so that an aqueous solution 9 on the intermediate film 8 flows down to the tissues 3 located in the lower portion of the case 6 to thereby soak the tissues 3.

[18] In this case, the cover film 7 and the intermediate film 8 should have a substantially equal tensile force. Accordingly, the cover film 7 and the intermediate film 8 may be torn off from the case 6 by the F and G direction tensile forces. However, the respective lengths and bonded positions of the cover film 7 and the intermediate film 8 differ from each other. As a result, there is a problem that the operation is frequently mal-functioned. Further, since an extended portion 8a of the intermediate film 8 is closely adhered to the inner wall of the case 6, and the end 8b of the intermediate film 8 is closely adhered to the upper surface 6c of the case 6, the right and left portions of the intermediate film 8 are of an asymmetrical structure in view of a three-dimensional structure. Accordingly, it is not so easy to mass-produce the tissue cases by automation, and the production cost thereof is increased. Disclosure of Invention Technical Problem

[19] Therefore, in order to supplement the shortcoming of the conventional art, it is an object of the present invention to provide a packaging case for disposable compressed tissues in which a liquid accommodation space and a tissue accommodation space are integrally molded and formed in a single accommodation member, and simultaneously a separable film is also formed therein by automation, to thereby accomplish curtailment of a manufacturing cost, elevation of an operational efficiency and reduction in number of recollected cases after use.

[20] It is another object of the present invention to provide a packaging case for disposable compressed tissues in which the packaging case is pressurized by one-touch when use so that an aqueous solution can soak tissues, to thereby provide a user with convenience in use and reduce the internal pressure which has been increased by the pressurization of the case, and to thus prevent the aqueous solution from being sprayed when a cover film is opened.

[21] It is still another object of the present invention to provide a packaging case for disposable compressed tissues in which a separable film can be safely situated and thermally fused in a case which is positioned in a process line by a vacuum adsorption/ thermal fusion device, to thereby reduce a manufacturing cost by automation. Technical Solution

[22] To accomplish the above object of the present invention, there is provided a packaging case for disposable compressed tissues, comprising: a first accommodation portion which accommodates liquid; a second accommodation portion which has a stepped portion on the upper portion of the first accommodation portion so that the cross-sectional area of the second accommodation portion is larger than that of the first accommodation portion, and is partitioned from the first accommodation portion by a separable film which is thermally fused on the stepped portion by a thermal fusion operation, to thus accommodate tissues which have been compressed and dried; and a cover film which covers the upper portion of the second accommodation portion, wherein a bursting strength of the cover film is larger than that of the separable film when pressurized, so that the separable film is bursted before the cover film is bursted when pressurized.

[23] Preferably but not necessarily, the separable film is a metal thin film, and the cover film is a metal thin film on which synthetic resin has been coated.

[24] According to another aspect of the present invention, there is also provided a method of manufacturing a packaging case for disposable compressed tissues, comprising the steps of: molding a synthetic resin material to form a first accommodation portion which accommodates liquid, a second accommodation portion which has a stepped portion on the upper portion of the first accommodation portion to thus accommodate tissues which have been compressed and dried; thermally fusing a separable film on the stepped portion after having accommodated liquid in the first accommodation portion; and covering the upper portion of the second accommodation portion after having accommodated tissues in the second accommodation portion which have been compressed and dried, wherein a bursting strength of the cover film is larger than that of the separable film when pressurized, so that the separable film is bursted before the cover film is bursted when pressurized.

[25] Preferably but not necessarily, the separable film is safely situated on the stepped portion by vacuum adsorption of a vacuum adsorption device and then thermally fused thereon by a thermal fusion device combined with the vacuum adsorption device.

Advantageous Effects

[26] A packaging case for disposable compressed tissues according to the present invention integrally molds and forms a liquid accommodation space and a tissue accommodation space in a single accommodation member, and also simultaneously forms a separable film therein by automation, to thereby provides an effect of accomplishing curtailment of a manufacturing cost, elevation of an operational efficiency and reduction in number of recollected cases after use.

[27] In addition, a packaging case for disposable compressed tissues according to the present invention provides an effect of providing a user with convenience in use and reducing the internal pressure which has been increased by the pressurization of the case, and thus preventing the aqueous solution from being sprayed when a cover film is opened, by making the packaging case pressurized by one-touch when use so that an aqueous solution can soak tissues.

[28] Further, a packaging case for disposable compressed tissues according to the present invention makes a separable film safely situated and thermally fused in a case which is positioned in a process line by a vacuum adsorption/thermal fusion device, to thereby provide an effect of reducing a manufacturing cost by automation. Brief Description of the Drawings

[29] FIGS. 1 through 8 are a cross-sectional view showing a conventional disposable tissue packaging case, respectively;

[30] FIG. 9 is a perspective view showing a packaging case for disposable compressed tissues according to a preferred embodiment of the present invention;

[31] FIG. 10 is a cross-sectional view showing the packaging case for disposable compressed tissues of FIG. 9;

[32] FIGS. 11 through 14 are views for explaining a process of manufacturing the packaging case for disposable compressed tissues of FIG. 9;

[33] FIGS. 15 and 16 are a cross-sectional view showing a state of using the packaging case for disposable compressed tissues of FIG. 9, respectively; and

[34] FIGS. 17 through 19 are cross-sectional views showing a relationship between the use state of the packaging case for disposable compressed tissues and the pressure change therein. Best Mode for Carrying Out the Invention

[35] The present invention provides a packaging case for disposable compressed tissues, comprising: a first accommodation portion which accommodates liquid; a second accommodation portion which has a stepped portion on the upper portion of the first accommodation portion so that the cross-sectional area of the second accommodation portion is larger than that of the first accommodation portion, and is partitioned from the first accommodation portion by a separable film which is thermally fused on the stepped portion by a thermal fusion operation, to thus accommodate tissues which have been compressed and dried; and a cover film which covers the upper portion of the second accommodation portion, wherein a bursting strength of the cover film is larger than that of the separable film when pressurized, so that the separable film is bursted before the cover film is bursted when pressurized.

[36] The present invention also provides a method of manufacturing a packaging case for disposable compressed tissues, comprising the steps of: molding a synthetic resin material to form a first accommodation portion which accommodates liquid, a second accommodation portion which has a stepped portion on the upper portion of the first accommodation portion to thus accommodate tissues which have been compressed and dried; thermally fusing a separable film on the stepped portion after having accommodated liquid in the first accommodation portion; and covering the upper portion of the second accommodation portion after having accommodated tissues in the second accommodation portion which have been compressed and dried, wherein a bursting strength of the cover film is larger than that of the separable film when pressurized, so that the separable film is bursted before the cover film is bursted when pressurized. Mode for the Invention

[37] Hereinbelow, a packaging case for disposable compressed tissues according to a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

[38] FIG. 9 is a perspective view showing a packaging case for disposable compressed tissues according to a preferred embodiment of the present invention, and FIG. 10 is a cross-sectional view showing the packaging case for disposable compressed tissues of FIG. 9.

[39] As illustrated in FIGS. 9 and 10, a packaging case for disposable compressed tissues, according to a preferred embodiment of the present invention includes: an accommodation portion 130 in which a liquid accommodation portion 110 which accommodates liquid 101 in order to supply the liquid for compressed and dried tissues 102 and a tissue accommodation portion 120 which has a stepped portion 110a on the upper portion of the liquid accommodation portion 110 so that the cross-sectional area of the tissue accommodation portion 120 is larger than that of the liquid accommodation portion 110, are integrally molded and formed; a separable film 140 which is thermally fused on the stepped portion 110a which is located in the upper side of the liquid accommodation portion 110; and a cover film 150 which is thermally fused on the upper side of the tissue accommodation portion 120 to cover the upper portion of the tissue accommodation portion 120.

[40] It is preferable that the liquid accommodation portion 110 in the accommodation portion 130 is of a cylindrical or hexahedron shape. A volume of the liquid accommodation portion 110 in the accommodation portion 130 has a little larger than that of the tissues 102 so that the amount of the liquid 101 can be accommodated as much as the amount which can be absorbed by the whole tissues 102. Further, the upper side of the liquid accommodation portion 110 in the accommodation portion 130 is opened by bursting of the cover film 150.

[41] Thus, the tissue accommodation portion 120 is integrally molded and formed in the upper side of the liquid accommodation portion 110, so as to have a stepped portion 110a, that is, in a stepwise manner as shown in FIGS. 11 and 13. Accordingly, the liquid accommodation portion and the liquid accommodation portion need not be separately molded and formed, respectively. As a result, an assembly process of assembling the liquid accommodation portion and the liquid accommodation portion is not required. Therefore, a manufacturing cost can be saved and a working efficiency can be enhanced by automation.

[42] The separable film 140 is a film which is thermally fused on the stepped portion

110 (see FIGS. 11 and 13) of the liquid accommodation portion 110, and is a very thin metal film which is easily bursted if a predetermined pressure is applied to the lower portion of the liquid accommodation portion 110. It is preferable that the separable film 140 is of a flat structure which is symmetrical to the left and right. The cover film 150 is a film which is thermally fused on the upper extension portion 121 of the tissue accommodation portion 120. Here, it is preferable that a bursting strength of the cover film 150 is larger than that of the separable film 140 when pressurized, so that the separable film 140 is bursted before the cover film 150 is bursted when pressurized.

[43] Meanwhile, the position of the liquid accommodation portion 110 may be exchanged with that of the tissue accommodation portion 120. The liquid in the liquid accommodation portion 110 may be a functional aqueous solution for cleansing or nutritional moisturizing.

[44] Here, in order to make a bursting strength of the cover film 150 larger than that of the separable film 140, it is preferable that the separable film 140 is a soft aluminum thin film and the cover film 150 is a thermally heat treated hard aluminum thin film. Meanwhile, the separable film 140 is made by coating only an adhesive on an aluminum thin film, but the cover film 150 is made by coating a synthetic resin film and an adhesive film on an aluminum thin film in order to heighten a bursting strength. Alternatively, in order to obtain a difference in the bursting strengths between the separable film 140 and the cover film 150, the thickness of the cover film 150 may be relatively thicker than that of the separable film 140.

[45] Thus, the separable film 140 whose bursting strength is relatively weaker than that of the cover film 150 has been bursted by the external pressurization before the cover film 150 is bursted. Accordingly, the compressed tissues 102 absorb the aqueous solution to lower the increased internal pressure in the packaging case. Then, the cover film 150 is bursted or torn off by the continuously applied external pressurization, to enable a user to take out and use the liquid- absorbed tissues 102.

[46] As described above, since the separable film 140 is bursted earlier than the cover film 150, the above-described balloon effect can be prevented.

[47] FIGS. 11 through 14 are views for explaining a process of manufacturing the packaging case for disposable compressed tissues of FIG. 9. FIGS. 15 and 16 are a cross-sectional view showing a state of using the packaging case for disposable compressed tissues of FIG. 9, respectively. FIGS. 17 through 19 are cross-sectional views showing a relationship between the use state of the packaging case for disposable compressed tissues and the pressure change therein.

[48] First, as shown in FIG. 11, a plurality of accommodation cases 130 are arranged in a matrix form to thereby constitute an accommodation case group 10OA. Liquid 101 of a certain amount is supplied from a liquid supply unit (not shown) and accommodated in respective liquid accommodation portions 110 of the accommodation case group 10OA. Then, a separable film group 140A is positioned in the upper side of respective tissue accommodation portions 120. Here, a plurality of separable films 140 are partly punched and formed in the separable film group 140A. Here, a plurality of the accommodation cases 130 which are arranged at predetermined intervals are mutually divided into a single accommodation portion 130 if they are cut along cutting lines 103. That is, the separable film group 140A is aligned on the tissue accommodation portions 120, by a vacuum adsorption pickup (not shown). Then, the respective separable films 140 in the separable film group 140A include open portions 140a and non-open portions 140b which are partly punched so that a plurality of separable films 140 are accurately safely situated on the respective stepped portions 110a in the respective liquid accommodation portions 110 when the separable film group 140A is pressurized.

[49] Then, as illustrated in FIG. 12, the separable films 140 are sequentially picked up, pressurized and thermally fused on the respective stepped portions 110a of the respective liquid accommodation portions 110 through a vacuum adsorption operation of a first pickup/thermal fuser 200, to thereby seal the respective liquid accommodation portions 110. Here, the first pickup/thermal fuser 200 has a cross- sectional structure corresponding to the outer countenances of the stepped portions 110a of the liquid accommodation portions 110. In addition, the first pickup/thermal fuser 200 includes an adsorption unit 220 which picks up a separable film 140 under a vacuum atmosphere and a path 221 which is connected with an air supply/exhaust pump (not shown), at the center of each liquid accommodation portion 110 in the acco mmodation case 100.

[50] In other words, as illustrated in FIG. 13, the first pickup/thermal fuser 200 descends down to the respective stepped portions 110a, at the state of picking up the separable films 140 under the vacuum atmosphere. Here, the respective separable films 140 are the non-open portions 140b which are incised around the respective open-portions 140a in the separable film group 140A, and safely situated on the stepped portions 110a of the respective liquid accommodation portions 110. In addition, the first pickup/thermal fuser 200 further includes thermal fusers 210 which thermally fuse the separable films 140 on the stepped portions 110a of the respective liquid accommodation portions 110, in correspondence to the respective liquid accommodation portions 110 at the bottom of the first pickup/thermal fuser 200. Therefore, the first pickup/thermal fuser 200 aligns the separable films 140 on the corresponding stepped portions 110a of the respective liquid accommodation portions 110 through the vacuum adsorption of the adsorption unit 220 and then thermally fuses the separable films 140 on the corresponding stepped portions 110a of the respective liquid accommodation portions 110 through the thermal fusion of the respective thermal fusers 210. Thereafter, the separable film group 140A from which the separable films 140 have been removed is taken away from the upper portion of the accommodation case group 10OA.

[51] Then, as illustrated in FIG. 14, tissues 102 which are compressed and dehydrated are contained in respective tissue accommodation portions 120. Then, a second pickup/ thermal fuser 300 picks up a cover film 150 and aligns the cover film 150 on the upper portion of the accommodation case group 10OA. Here, the structure of the second pickup/thermal fuser 300 is the same as that of the first pickup/thermal fuser 200, except that thermal fusers (not shown) thermally fuse the cover film 150 on the portions excluding the opening portions of the respective tissue accommodation portions 120.

[52] Thus, as illustrated in FIG. 15, a certain amount of pressure is applied to the lower side of a liquid accommodation portion 110 containing liquid 101, a separable film 140 which has been thermally fused on the stepped portion 110a formed between the liquid accommodation portion 110 and the tissue accommodation portion 120 is exploded. Accordingly, liquid 101 contained in the liquid accommodation portion 110 flows into the tissue accommodation portion 120, and thus tissues 102 absorb the liquid 101 and expand. As a result, the internal pressure which has been increased in the liquid accommodation portion 110 by the pressurization is lowered and thus the liquid is not sprayed out of the accommodation case 130, to resultantly further enhance convenience and hygiene. Thereafter, as illustrated in FIG. 16, the pressure is continuously applied to the lower side of the liquid accommodation portion 110, the cover film 150 which has been thermally fused on the tissue accommodation portion 120 is bursted by the expanded tissues 102. As a result, the tissues 102 are exposed to the outside of the tissue accommodation portion 120.

[53] A relationship between the use state of the packaging case for disposable compressed tissues according to a preferred embodiment of the present invention and the pressure change therein, and a process of preventing a balloon effect due to the relationship between the use state of the packaging case and the pressure change therein, will be described in more detail with reference to FIGS. 17 to 19. [54] As illustrated in FIG. 17, in the case that no pressure is applied to the lower side of the tissue accommodation portion 110 in order to use tissues 102 contained in the tissue accommodation portion 110, it is assumed that an atmospheric pressure Pl is one atm, an internal pressure P2 in the tissue accommodation portion 110 is one atm, and an internal pressure P3 in the liquid accommodation portion 120 is one atm. Here, in the case that a certain amount of pressure P (about 0.2 atm) is applied to the tissue ccommodation portion 110 in order to use tissues 102 contained in the tissue accommodation portion 110, the internal volume in the liquid accommodation portion 120 is decreased, and the internal pressure P2 in the tissue accommodation portion 110 and the internal pressure P3 in the liquid accommodation portion 120 are increased by the depressed pressure P (about 0.2 atm). Thus, P2 and P3 become about 1.2 atm and is higher by the depressed pressure P (about 0.2 atm) than Pl which is one atm. However, as illustrated in FIGS. 18 and 19, the separable film 140 whose burst strength is relatively weaker than that of the cover film 150 is burs ted first, and thus the tissues 102 contained in the tissue accommodation portion 110 absorb the liquid 101. Accordingly, the internal pressures in the tissue accommodation portion 110 and the liquid accommodation portion 120 are lowered up to the same pressure as the atmospheric pressure, that is, Pl (one atm). Accordingly, the balloon effect can be prevented. Thereafter, as illustrated in FIG. 19, if the pressure is continuously applied to the tissue accommodation portion 110, the cover film 150 may be burs ted by the expanded tissues 102. Otherwise, the cover film 150 may be ripped off in an arrow direction, to thereby withdraw the tissues.

[55] As described above, the present invention has been described with respect to a particularly preferred embodiment. However, the present invention is not limited to the above embodiment, and it is possible for one who has an ordinary skill in the art to make various modifications and variations, without departing off the spirit of the present invention. Thus, the protective scope of the present invention is not defined within the detailed description thereof but is defined by the claims to be described later and the technical spirit of the present invention. Industrial Applicability

[56] As described above, a packaging case for disposable compressed tissues according to the present invention can be applied in a disposable tissue maker.

Claims

[1] A packaging case for disposable compressed tissues, comprising: a first accommodation portion which accommodates liquid; a second accommodation portion which has a stepped portion on the upper portion of the first accommodation portion so that the cross-sectional area of the second accommodation portion is larger than that of the first accommodation portion, and is partitioned from the first accommodation portion by a separable film which is thermally fused on the stepped portion by a thermal fusion operation, to thus accommodate tissues which have been compressed and dried; and a cover film which covers the upper portion of the second accommodation portion, wherein a bursting strength of the cover film is larger than that of the separable film when pressurized, so that the separable film is bursted before the cover film is bursted when pressurized.

[2] The packaging case for disposable compressed tissues according to claim 1, wherein the separable film is a metal thin film, and the cover film is a metal thin film on which synthetic resin has been coated.

[3] A method of manufacturing a packaging case for disposable compressed tissues, comprising the steps of: molding a synthetic resin material to form a first accommodation portion which accommodates liquid, a second accommodation portion which has a stepped portion on the upper portion of the first accommodation portion to thus accommodate tissues which have been compressed and dried; thermally fusing a separable film on the stepped portion after having accommodated liquid in the first accommodation portion; and covering the upper portion of the second accommodation portion after having accommodated tissues in the second accommodation portion which have been compressed and dried, wherein a bursting strength of the cover film is larger than that of the separable film when pressurized, so that the separable film is bursted before the cover film is bursted when pressurized.

[4] The method of manufacturing a packaging case for disposable compressed tissues of claim 3, wherein the separable film is safely situated on the stepped portion by vacuum adsorption of a vacuum adsorption device and then thermally fused thereon by a thermal fusion device combined with the vacuum adsorption device.