US20110163100A1 - Package - Google Patents
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- Publication number
- US20110163100A1 US20110163100A1 US13/001,737 US200913001737A US2011163100A1 US 20110163100 A1 US20110163100 A1 US 20110163100A1 US 200913001737 A US200913001737 A US 200913001737A US 2011163100 A1 US2011163100 A1 US 2011163100A1
- Authority
- US
- United States
- Prior art keywords
- opening
- sheet
- lid
- proximal portion
- corner
- 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.)
- Abandoned
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Classifications
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- 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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
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- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5827—Tear-lines provided in a wall portion
- B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
- B65D75/5838—Tear-lines provided in a wall portion for tearing out a portion of the wall combined with separate fixed tearing means, e.g. tabs
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
- A47K10/16—Paper towels; Toilet paper; Holders therefor
- A47K10/18—Holders; Receptacles
- A47K10/20—Holders; Receptacles for piled sheets
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K7/00—Body washing or cleaning implements
-
- 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
- B65D2575/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
- B65D2575/52—Details
- B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D2575/586—Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing
Definitions
- the present invention relates to a package for storing an article for dispensation and more particularly, to a package manufactured with improved workability.
- wet tissues are available which are formed by a sheet-type fibrous material, such as tissue paper and nonwoven fabric, and impregnated with liquid such as chemicals, skin lotion and alcohol.
- a sheet-type fibrous material such as tissue paper and nonwoven fabric
- liquid such as chemicals, skin lotion and alcohol.
- wet tissues are stored in a package formed of a flexible material.
- the package includes a body having a wet-tissue storage space in which an article is stored and an opening through which the article is taken out of the article storage space, and a lid for opening and closing the opening of the body.
- the lid is bonded to a top of the body by an adhesive such that it can be repeatedly peeled off.
- Japanese non-examined laid-open Patent Publication No. 11-268783 discloses a package having a lid which includes a body portion in which a first sheet and a second sheet are stacked and an extended portion in which only the second sheet is extended.
- the second sheet forming the extended portion is extended from the body portion in which the first and second sheets are stacked. During manufacturing such a package, a wrinkle may occur in the second sheet of the lid.
- an object of the invention to provide a technique for manufacturing a package with improved workability.
- a package is provided with a body and a lid.
- the body of the package has an article storage space in which an article is stored and an opening through which the article is taken out of the article storage space.
- the body of the package is formed, for example, of a laminate film, or typically a heat-sealing film.
- the article to be stored in the body of the package includes a wet tissue formed by impregnating a sheet-type base material made of a fibrous material with liquid.
- the lid of the body has an opening-closing portion that covers the opening of the body and a proximal portion that extends from the opening-closing portion.
- the opening-closing portion of the lid has a larger area than the opening of the body.
- the lid is formed by stacking a second sheet which is larger than a first sheet, on top of the first sheet.
- the opening-closing portion of the lid is formed by a laminated portion of the first and second sheets, and the proximal portion of the lid is formed by a portion of the second sheet which protrudes from the first sheet.
- the second sheet preferably has a lower flexural rigidity than the first sheet.
- the lid is bonded to a top of the body by an adhesive applied to one side of the lid.
- One side of the lid comprises a side of the first sheet forming the opening-closing portion which faces away from the second sheet and a side of the second sheet forming the proximal portion which faces the first sheet.
- the proximal portion is bonded to an area in which the opening is not formed, and the opening-closing portion is bonded in a position in which it covers the opening.
- the second sheet is bonded to the first sheet and to the top of the body of the package by a second adhesive which is applied to one side of the second sheet.
- the first sheet is bonded to the top of the body of the package by a first adhesive which is applied to a side of the first sheet which faces away from the second sheet (one side of the first sheet).
- an adhesive having a higher adhesive strength than the first adhesive is preferably used as the second adhesive.
- a corner of the proximal portion on the side opposite to the opening-closing portion has a lower rigidity.
- a corner having a pointed shape such as a square shape
- the corner may warp or bend by a force acting upon the corner of the proximal portion during manufacturing of the package. If the lid having such a warp or bend in the corner of the proximal portion is bonded to the top of the body, a wrinkle will occur in the second sheet of the lid.
- the corner of the proximal portion of the lid on the side opposite to the opening-closing portion is rounded.
- the radius of curvature of the corner of the proximal portion is set to an appropriate value according to the length and the width of the proximal portion, the thickness of the first sheet forming the opening-closing portion, or other similar factors, such that the occurrence of a wrinkle in the second sheet of the lid can be prevented.
- the radius of curvature of the corner is set to 1.5 mm at the minimum.
- the maximum radius of curvature of the corner of the proximal portion is determined according to the length or strength of the proximal portion or other similar factors.
- the thickness of the lid of the package changes at a boundary between the opening-closing portion and the proximal portion.
- the boundary between the opening-closing portion and the proximal portion functions as a hinge. Therefore, when the opening-closing portion of the lid is turned over toward the proximal portion, the proximal portion of the lid can be prevented from being peeled off together with the opening-closing portion. Further, when the opening-closing portion of the lid is turned over toward the proximal portion, the opening-closing portion is held tilted toward the proximal portion under its own weight.
- the user can perform the opening or closing operation of the opening-closing portion of the lid and the operation of taking out the article by one hand.
- the rigidity of the corner becomes higher, so that the corner can be prevented from warping or bending by the force acting upon the corner.
- the occurrence of a wrinkle in the second sheet (the proximal portion) of the lid can be prevented, so that a package can be manufactured with improved workability.
- the corner of the proximal portion of the lid on the side opposite to the opening-closing portion is chamfered by cutting off a tip end portion of a square (for example, right-angled) corner in a predetermined chamfering dimension at a predetermined chamfering angle.
- the chamfering angle is an angle of a cutting face with respect to one of the edges which form the corner, and the chamfering dimension is a distance between a cutting point and the tip end of the corner.
- the rigidity of the corner becomes higher, so that the proximal portion can be prevented from warping or bending by the force acting upon the proximal portion.
- the chamfering angle and the chamfering dimension are set to appropriate values according to the length and the width of the proximal portion, the thickness of the first sheet forming the opening-closing portion, or other similar factors, such that the rigidity of the proximal portion of the lid can be made higher and thus the occurrence of a wrinkle in the second sheet of the lid can be prevented.
- the chamfering angle is set to 45 degrees (or about 45 degrees) and the chamfering dimension is set to 1.5 mm at the minimum.
- the maximum chamfering dimension is determined according to the length or strength of the proximal portion or other similar factors.
- the boundary between the opening-closing portion and the proximal portion functions as a hinge. Therefore, when the opening-closing portion of the lid is turned over toward the proximal portion, the proximal portion of the lid can be prevented from being peeled off together with the opening-closing portion. Further, the opening-closing portion is held tilted toward the proximal portion, so that the user can perform the opening or closing operation of the opening-closing portion of the lid and the operation of taking out the article by one hand.
- the rigidity of the corner becomes higher, so that the corner can be prevented from warping or bending by the force acting upon the corner.
- the occurrence of a wrinkle in the second sheet of the lid can be prevented, so that a package can be manufactured with improved workability.
- the proximal portion of the lid can be prevented from being peeled off the top of the body, and the opening or closing operation of the opening-closing portion of the lid and the operation of taking out the article can be performed by one hand of the user. Further, the occurrence of a wrinkle in the second sheet of the lid can be prevented, so that the workability can be improved.
- FIG. 1 is a perspective view showing a package according to an embodiment of the present invention, with an opening closed.
- FIG. 2 is a sectional view taken along line II-II in FIG. 1 .
- FIG. 3 is a perspective view showing the package according to the embodiment of the present invention, with an opening opened.
- FIG. 4 is a sectional view taken along line IV-IV in FIG. 3 .
- FIG. 5 is a view for illustrating a problem of a lid of a package in which a proximal portion has a square corner.
- FIG. 6 is a view for illustrating a problem of a lid of a package in which a proximal portion has a square corner.
- FIG. 7 shows a lid of the package according to the embodiment of the present invention.
- FIG. 8 shows a lid of the package according to another embodiment of the present invention.
- a package 100 for storing wet tissues 130 for dispensation is now explained as a representative embodiment of the present invention.
- Wet tissues 130 mean a sheet-type base material made of a fibrous material (cf. nonwoven fabric, gauze, cotton sheet, tissue paper) and impregnated with liquid (cf. alcohol, antiseptic solution, skin lotion).
- the wet tissues 130 are features that correspond to the “article” according to this invention.
- FIG. 1 is a perspective view showing the package 100 with an opening 112 closed
- FIG. 2 is a sectional view taken along line II-II in FIG. 1
- FIG. 3 is a perspective view showing the package 100 with the opening 112 opened
- FIG. 4 is a sectional view taken along line IV-IV in FIG. 3 .
- the package 100 includes a body 110 and a lid 120 .
- the body 110 and the lid 120 are features that correspond to the “body of the package” and the “lid of the package”, respectively, according to this invention.
- the body 110 of the package 100 is formed by an upper wall 110 a and a bottom wall 110 b and has a wet-tissue storage space 110 H in which the wet tissues 130 are stored. Further, the body 110 of the package 100 has the opening 112 which is formed in the upper wall 110 a such that the wet tissues 130 can be taken out of the wet-tissue storage space 110 H through the opening.
- the side of the body in which the opening 112 is formed is referred to as the “upper wall”.
- the wet-tissue storage space 110 H and the opening 112 are features that correspond to the “article storage space” and the “opening of the body of the package through which the article is taken out of the article storage space”, respectively, according to this invention.
- the wet tissues 130 are stored in the wet-tissue storage space 110 H in such a manner as to be taken out one by one through the opening 112 .
- the wet tissues 130 are stored such that, when a first wet tissue 130 is taken out through the opening 112 , an underlying second wet tissue 130 is partially exposed outward through the opening 112 .
- the wet tissues 130 are individually folded in two and stacked one on the other in such orientation that a folding direction of the wet tissues 130 is alternately reversed. Then, an end of a lower half (in the laminated state) of a wet tissue 130 is located below an end of an upper half (in the laminated state) of an underlying wet tissue 130 .
- the body 110 of the package 100 is formed, for example, of a film which can be fusion bonded by heating or heat-sealed (which film is referred to as a “heat-sealing film”).
- the body 110 of the package 100 is formed by wrapping the wet tissues 130 with a heat-sealing film, pressing and heating a longitudinal sealing part (not shown) and lateral sealing parts 111 a , 111 b in which the heat-sealing film edges are overlapped with each other, so that the heat-sealing film edges are bonded at the longitudinal sealing part and the lateral sealing parts 111 a , 111 b .
- the longitudinal sealing part is formed on the underside of the body 110 along the direction in which the heat-sealing film is fed during manufacturing of the package 100 .
- the lateral sealing parts 111 a , 111 b are formed on front and rear ends or opposite ends of the heat-sealing film in the direction in which the heat-sealing film is fed during manufacturing of the package 100 , and extend along a direction perpendicular to the feed direction.
- a laminate film which includes a protective layer made of polyethylene terephthalate (PET) resin, a moisture keeping layer (drying prevention layer) made of aluminum, and a heat-sealing layer made of biaxial oriented polypropylene resin.
- PET polyethylene terephthalate
- drying prevention layer moisture keeping layer
- heat-sealing layer made of biaxial oriented polypropylene resin.
- edges of the heat-sealing film are laid one on top of the other such that portions of the heat-sealing layer (biaxial oriented polypropylene resin layer) which are located at the longitudinal and lateral sealing parts are opposed to each other.
- the protective layer may be omitted.
- the moisture keeping layer (drying prevention layer) is not limited to an aluminum layer, but includes any layers which can hold the wet tissues 130 in wet condition within the wet-tissue storage space 110 H.
- the heat-sealing layer is not limited to a biaxial oriented polypropylene resin layer, but includes any layers which can be heat-sealed.
- the heat-sealing film which forms the body 110 has perforations along an opening edge 112 a in a portion corresponding to the upper wall 110 a of the body 110 .
- An opening formation part 110 A of the heat-sealing film which is bordered by the perforations (the opening edge 112 a ) is peeled off the body 110 when an opening-closing portion 120 B of the lid 120 bonded to the top of the body 110 is peeled off the body 110 for the first time, which will be described below in further detail.
- the opening 112 is formed in the upper wall 110 a of the body 110 by peeling off the opening formation part 110 A from the body 110 .
- the opening 112 (the opening edge 112 a ) can have various shapes which allow the wet tissues 130 to be taken out of the wet-tissue storage space 110 H, such as an elliptical shape having major and minor axes, a circular shape and a rectangular shape.
- the opening 112 (the opening edge 112 a ) having an elliptical shape is formed in the body 110 .
- the elliptical shape of the opening 112 is formed such that the major axis runs in the longitudinal direction of the body 110 (in the direction in which the longitudinal sealing part extends) and the minor axis runs in a direction perpendicular to the longitudinal direction of the body 110 (in the direction in which the lateral sealing parts extend).
- a heat-sealing film having the opening 112 formed in advance may also be used to form the body 110 .
- the lid 120 of the package 100 includes the opening-closing portion 120 B, a proximal portion 120 A extending from one end of the opening-closing portion 120 B, and a tab portion (tip) 120 C extending from the other end of the opening-closing portion 120 B (which faces away from the proximal portion 120 A).
- the opening-closing portion 120 B has a larger area than the opening 112 of the body 110 .
- the lid 120 is bonded to the top of the upper wall 110 a of the body 110 by an adhesive which is applied to one side of the lid.
- the proximal portion 120 A is bonded to a portion of the upper wall in which the opening 112 is not formed, and the opening-closing portion 120 B is bonded in a position in which it covers the opening 112 .
- the tab portion 120 C is used as a tab for opening and closing the opening-closing portion 120 B. Therefore, preferably, an adhesive is not applied to the tab portion 120 C. It is suitable to use an adhesive which can bond at least the opening-closing portion 120 B to the top of the upper wall 110 a of the body 110 such that the opening-closing portion 120 B can be repeatedly peeled off. For example, a pressure sensitive adhesive is used.
- the tab portion 120 C of the lid 120 is picked up and the opening-closing portion 120 B is peeled off the top of the upper wall 110 a of the body 110 . Then the opening-closing portion 120 B is turned over toward the proximal portion 120 A in order to open the opening 112 . In this state, when the tab portion 120 c is released, the wet tissues 130 cannot be taken out if the opening-closing portion 120 B tilts toward the top of the upper wall 110 a of the body 110 by the resiliency of the lid 120 . In this case, it is difficult to perform the opening or closing operation of the opening-closing portion 120 B and the operation of taking out the wet tissues 130 by one hand.
- the lid 120 of the package 100 is formed by a first sheet 121 and a second sheet 122 stacked one on the other.
- the first sheet 121 has a shape corresponding to the opening-closing portion 120 B.
- the second sheet 122 is larger than the first sheet 121 and has a shape corresponding to the proximal portion 120 A, the opening-closing portion 120 B and the tab portion 120 C.
- the first sheet 121 is formed, for example, by a sheet or synthetic paper made of polypropylene (PP) resin or polyethylene terephthalate (PET) resin.
- the first sheet 121 is formed in the thickness of 50 to 100 ⁇ m, or preferably in the thickness of 70 ⁇ m.
- the second sheet 122 is formed, for example, by a sheet made of polypropylene (PP) resin or polyethylene terephthalate (PET) resin.
- the second sheet 122 is formed in the thickness of 10 to 20 ⁇ m, or preferably in the thickness of 20 ⁇ m. Specifically, the second sheet 122 has a thickness smaller than that of the first sheet 121 . Therefore, the flexural rigidity of the second sheet 122 is lower than that of the first sheet 121 .
- the way of making the flexural rigidity of the second sheet 122 lower than that of the first sheet 121 is not limited to the way in which a difference is made between the first and second sheets in thickness, but, for this purpose, the first and second sheets may be made different in materials.
- a first adhesive 123 is applied to one side of the first sheet 121
- a second adhesive 124 is applied to one side of the second sheet 121 .
- the second adhesive 124 is not applied to a portion corresponding to the tab portion 120 C which is used as a tab.
- acrylic adhesives may be used as the first and second adhesives 123 , 124 .
- the first and second sheets 121 , 122 are bonded together by the second adhesive 124 , or in other words, stacked one on the other.
- the other side of the first sheet 121 is bonded to a portion of the one side of the second sheet 122 which corresponds to the opening-closing portion 120 B.
- the opening-closing portion 120 B of the lid 120 is formed by a laminated portion of the first and second sheets 121 , 122
- the proximal portion 120 A is formed by a portion of the second sheet 122 which protrudes from one end of the first sheet 121
- the tab portion 120 C is formed by a portion of the second sheet 122 which protrudes from the other end of the first sheet 121 .
- Designated by 120 D is a boundary between the opening-closing portion 120 B and the proximal portion 120 A.
- the thickness of the lid 120 changes at the boundary 120 D.
- the lid 120 is bonded to the top of the upper wall 110 a of the body 110 by the first adhesive 123 which is applied to one side of the first sheet 121 forming the opening-closing portion 120 B and by the second adhesive 124 which is applied to one side (on the same side as the one side of the first sheet 121 ) of the second sheet 122 forming the proximal portion 120 A.
- the opening-closing portion 120 B is bonded to the top of the upper wall 110 a of the body 110 in order to prevent the wet tissues 130 from drying.
- the opening-closing portion 120 B is peeled off the top of the upper wall 110 a of the body 110 so that the opening 112 is opened. Therefore, the second adhesive 124 is used which can bond the opening-closing portion 120 B to the top of the upper wall 110 a of the body 110 such that the opening-closing portion 120 B can be repeatedly peeled off.
- the proximal portion 120 A may also be peeled off the top of the upper wall 110 a of the body 110 when the opening-closing portion 120 B is peeled off the top of the upper wall 110 a of the body 110 and turned over toward the proximal portion 120 A. Therefore, in this embodiment, an adhesive having a higher adhesive strength than the first adhesive 123 is used as the second adhesive 124 .
- the tab portion (tip) 120 C is picked and pulled up by the fingers.
- the tab portion 120 C is pulled up above the top of the upper wall 110 a and toward the proximal portion 110 A.
- the opening-closing portion 120 B bonded to the top of the upper wall 110 a by the first adhesive 121 is peeled off the top of the upper wall 110 a beginning at the tab portion 120 C and turned over toward the proximal portion 120 A.
- the opening formation part 110 A which is bordered by the perforations formed along the opening edge 112 a is peeled off while being kept bonded to the first sheet 121 by the first adhesive 123 .
- the opening 112 is formed in the upper wall 110 a of the body 110 .
- the second adhesive 124 for bonding the proximal portion 120 A of the lid 120 to the body 110 has a higher adhesive strength than the first adhesive 123 for bonding the opening-closing portion 120 B of the lid 120 to the body 110 . Therefore, when the opening-closing portion 120 B is peeled off up to the boundary 120 D between the opening-closing portion 120 B and the proximal portion 120 A, the user can recognize by increased reaction force applied to the user's fingers that the opening-closing portion 120 B has been peeled off up to the boundary 120 D.
- the opening-closing portion 120 B of the lid 120 is formed by the laminated portion of the first and second sheets 121 , 122 , and the proximal portion 120 A of the lid 120 is formed by a portion of the second sheet 122 which protrudes from the first sheet 121 .
- the thickness of the lid 120 changes at the boundary 120 D between the opening-closing portion 120 B and the proximal portion 120 A. Therefore, when the opening-closing portion 120 B is peeled off up to the boundary 120 D, the boundary 120 D functions as a hinge, so that the force of peeling off the opening-closing portion 120 B is absorbed as a force of rotating the opening-closing portion 120 B around the boundary 120 D.
- the second sheet 122 has a lower flexural rigidity than the first sheet 121 . Therefore, as shown in FIG. 4 , when the opening-closing portion 120 B is peeled off up to the boundary 120 D, the opening-closing portion 120 B is held tilted toward the proximal portion 120 A under its own weight. In this state, even if the tab portion 120 C is released, the opening-closing portion 120 B is prevented from tilting toward the opening 112 . Therefore, the user can perform the opening or closing operation of the opening-closing portion 120 B and the operation of taking out the wet tissues 130 by one hand.
- the tab portion 120 C is returned to the opening 112 side and the opening-closing portion 120 B is bonded to the top of the upper wall 110 a of the body 110 by the user.
- the lid 120 of this embodiment includes the opening-closing portion 120 B formed by the laminated portion of the first and second sheets 121 , 122 , and the proximal portion 120 A formed by a portion of the second sheet 122 which protrudes from the first sheet 121 . Therefore, when the lid 120 is formed by arranging the second sheet 122 on top of the first sheet 121 , the first sheet 121 is not present under the portion of the second sheet 122 which forms the proximal portion 120 A (see FIG. 5 ). In this case, the portion of the second sheet 122 which forms the proximal portion 120 A is acted upon by a force under its own weight. This force becomes larger away from the boundary 120 D between the opening-closing portion 120 B and the proximal portion 120 A.
- the second sheet 122 forming the proximal portion 120 A of the lid 120 has a lower flexural rigidity than the first sheet 121 forming the opening-closing portion 120 B. Therefore, the proximal portion 120 A has a lower flexural rigidity. Particularly, a corner of the proximal portion 120 A on the side opposite to the opening-closing portion 120 B (where an edge extending from the boundary 120 D and an edge on the side opposite to the opening-closing portion 120 B meet) has a lower flexural rigidity.
- FIG. 5 shows a lid 520 having a pointed (for example, right-angled) corner 522 a in a proximal portion 520 A on the side opposite to an opening-closing portion 520 B.
- the opening-closing portion 520 B is formed by a laminated portion of first and second sheets 521 , 522
- the proximal portion 520 A is formed by a portion of the second sheet 522 which protrudes from one end of the first sheet 521
- the tab portion 520 C is formed by a portion of the second sheet 522 which protrudes from the other end of the first sheet 521 .
- the corner 522 a Due to the pointed shape of the corner 522 a of the proximal portion 520 A on the side opposite to the opening-closing portion 520 B, the corner 522 a has a particularly lower flexural rigidity. Therefore, when the lid 520 shown in FIG. 5 is formed by arranging the second sheet 522 on top of the first sheet 521 , the corner 522 a may warp toward the first sheet 521 as shown by the hollow arrow.
- a force F is sometimes applied to the lid 520 in a direction of the hollow arrow shown in FIG. 6 .
- the corner 522 a of the proximal portion 520 A has a pointed shape, the force F is applied as-is to the corner 522 a .
- the corner 522 a may bend as shown by the solid arrow in FIG. 6 .
- the corner 522 a of the proximal portion 520 A may warp or bend. If the lid 520 having such a warp or bend is bonded to the top of the body 110 , a wrinkle will occur in the proximal portion 520 A of the lid 520 .
- a corner of the proximal portion is provided with a greater flexural rigidity in order to prevent the occurrence of a warp or a bend so as to prevent the occurrence of a wrinkle in the proximal portion of the lid.
- FIG. 7 shows the lid 120 of this embodiment.
- the lid 120 of this embodiment includes the opening-closing portion 120 B formed by the laminated portion of the first and second sheets 121 , 122 , the proximal portion 120 A formed by the portion of the second sheet 122 which protrudes from one end of the first sheet 121 , and the tab portion 120 C formed by the portion of the second sheet 122 which protrudes from the other end of the first sheet 121 (which faces away from the proximal portion 120 A).
- the corner 122 a of the proximal portion 120 A on the side opposite to the opening-closing portion 120 B is rounded. For such rounding operation, a radius of curvature of the rounded corner is set.
- the corner 122 a of the proximal portion 120 A has a rounded shape, as shown in FIG. 7 , the force F acting upon the corner 122 a is scattered. Therefore, the rigidity of the corner 122 a becomes higher than that of a corner having a pointed shape such as a square shape. Thus, the corner 122 a can be prevented from warping or bending by the force acting upon the corner 122 a , so that the occurrence of a wrinkle in the proximal portion 120 A of the lid 120 can be prevented.
- the radius of curvature of the corner 122 a is set to an appropriate value according to the shape (the length along the longitudinal direction of the lid 120 and the width in a direction perpendicular to the longitudinal direction of the lid 120 ) of the proximal portion 120 A, the thickness of the first sheet 121 forming the opening-closing portion 120 B, or other similar factors, such that the occurrence of a warp or a bend in the corner 122 a of the proximal portion 120 A can be prevented.
- the shape of the corner of the proximal portion is not limited to the rounded shape.
- a differently-shaped lid 420 is shown in FIG. 8 .
- a corner 422 a of a proximal portion 420 A on the side opposite to an opening-closing portion 420 B is chamfered by cutting off a tip end portion of the corner 422 a .
- a chamfering angle ⁇ and a chamfering dimension m are set.
- the chamfering angle ⁇ represents an angle of a cutting face with respect to one of the edges which form the corner 422 a , or, for example, an angle of a cutting face with respect to an edge 422 d of the proximal portion 420 A on the side opposite to the opening-closing portion 420 B.
- the chamfering dimension m represents a distance between a cutting point and the tip end of the corner 422 a , or, for example, a distance between a cutting point and an edge 422 c which extends from a boundary 420 D between the opening-closing portion 420 B and the proximal portion 420 A.
- the corner 422 a of the proximal portion 420 A is chamfered, as shown in FIG. 8 , the force F acting upon the corner 422 a is scattered. Therefore, the rigidity of the corner 422 a becomes higher than that of a corner having a pointed shape such as a square shape.
- the corner 422 a can be prevented from warping or bending by the force acting upon the corner 422 a , so that the occurrence of a wrinkle in the proximal portion 420 A of the lid 420 can be prevented.
- the chamfering shape (chamfering angle and chamfering dimension) of the corner 422 a of the proximal portion 420 A is set according to the shape (the length and the width) of the proximal portion 420 A of the lid 420 , the thickness of the first sheet 121 forming the opening-closing portion 420 B, or other similar factors. From the above-described experimental results, it is found preferable to set the chamfering shape of the corner 422 a such that the chamfering angle is about 45 degrees and the chamfering dimension is 1.5 mm at the minimum.
- the maximum chamfering dimension of the corner 422 a is determined according to the length of the proximal portion 420 A, a desired strength of the proximal portion 420 A or other similar factors.
- the present invention is not limited to the construction of the above-mentioned embodiments, but rather, may be added to, changed, replaced with alternatives or otherwise modified.
- the package of this invention is not limited to a package for storing a sheet-type article, such as wet tissues, but it can also be formed as a package for storing various other articles.
- the opening 112 of the package 100 is described as being formed in the upper wall 110 a of the body 110 , but it is essential that at least part of the opening 112 is formed in the upper wall 110 a of the body 110 .
- the lid 120 of the package 100 is described as being formed by the proximal portion 120 A, the opening-closing portion 120 B and the tab portion (tip) 120 C, but it may also be formed by the proximal portion 120 A and the opening-closing portion 120 B.
- the adhesive for bonding the proximal portion 120 A of the lid 120 of the package 100 to the top of the body 110 may be an adhesive having an adhesive strength with which the proximal portion 120 A can be removably bonded to the top of the body 110 , or it may be an adhesive having a adhesive strength with which the proximal portion 120 A can be firmly (irremovably) bonded to the top of the body 110 .
- the lid 120 of the package 100 is described as being formed by a lamination of the first and second sheets 121 , 122 , but it may be formed by a lamination of three or more sheets.
- the opening 112 is described as being formed by forming perforations along the opening edge 112 a in the upper wall 110 a of the body 110 and peeling off the opening formation part 110 A bordered by the perforations, via the adhesive applied to the lid 120 .
- the body 110 having the opening 112 formed in advance may also be used.
- the first adhesive 123 is applied to an entire area of the lid 120 other than an area corresponding to the opening 112 .
- the package 100 is not limited to the construction described in the above embodiments.
- the shape of the package 100 , the shape and position of the opening 112 , or the shape and position of the lid 120 can be appropriately changed. Further, various manners can be used to pack the article in the package 100 .
Abstract
It is an object of the invention to provide a technique which can prevent the occurrence of a wrinkle or bend in a lid which opens and closes an opening of a package. A body of a package has an opening through which wet tissues are taken out. A lid of the package has an opening-closing portion formed by a laminated portion of a first sheet and a second sheet, and a proximal portion formed by a portion of the second sheet which protrudes from the first sheet. A corner of the proximal portion of the lid on the side opposite to the opening-closing portion is rounded. The corner may be chamfered.
Description
- 1. Field of the Invention
- The present invention relates to a package for storing an article for dispensation and more particularly, to a package manufactured with improved workability.
- 2. Description of the Related Art
- Various kinds of wet tissues are available which are formed by a sheet-type fibrous material, such as tissue paper and nonwoven fabric, and impregnated with liquid such as chemicals, skin lotion and alcohol. Generally, such wet tissues are stored in a package formed of a flexible material. The package includes a body having a wet-tissue storage space in which an article is stored and an opening through which the article is taken out of the article storage space, and a lid for opening and closing the opening of the body. The lid is bonded to a top of the body by an adhesive such that it can be repeatedly peeled off. Japanese non-examined laid-open Patent Publication No. 11-268783 discloses a package having a lid which includes a body portion in which a first sheet and a second sheet are stacked and an extended portion in which only the second sheet is extended.
- In the lid of the known package, only the second sheet forming the extended portion is extended from the body portion in which the first and second sheets are stacked. During manufacturing such a package, a wrinkle may occur in the second sheet of the lid.
- It is, accordingly, an object of the invention to provide a technique for manufacturing a package with improved workability.
- In one aspect of the present invention, a package is provided with a body and a lid. The body of the package has an article storage space in which an article is stored and an opening through which the article is taken out of the article storage space. The body of the package is formed, for example, of a laminate film, or typically a heat-sealing film. The article to be stored in the body of the package includes a wet tissue formed by impregnating a sheet-type base material made of a fibrous material with liquid.
- The lid of the body has an opening-closing portion that covers the opening of the body and a proximal portion that extends from the opening-closing portion. The opening-closing portion of the lid has a larger area than the opening of the body. The lid is formed by stacking a second sheet which is larger than a first sheet, on top of the first sheet. The opening-closing portion of the lid is formed by a laminated portion of the first and second sheets, and the proximal portion of the lid is formed by a portion of the second sheet which protrudes from the first sheet. The second sheet preferably has a lower flexural rigidity than the first sheet. The lid is bonded to a top of the body by an adhesive applied to one side of the lid. One side of the lid comprises a side of the first sheet forming the opening-closing portion which faces away from the second sheet and a side of the second sheet forming the proximal portion which faces the first sheet. At this time, preferably, the proximal portion is bonded to an area in which the opening is not formed, and the opening-closing portion is bonded in a position in which it covers the opening. Further, typically, the second sheet is bonded to the first sheet and to the top of the body of the package by a second adhesive which is applied to one side of the second sheet. The first sheet is bonded to the top of the body of the package by a first adhesive which is applied to a side of the first sheet which faces away from the second sheet (one side of the first sheet). In this case, an adhesive having a higher adhesive strength than the first adhesive is preferably used as the second adhesive.
- In a construction in which the opening-closing portion of the lid is formed by a laminated portion of the first and second sheets, and the proximal portion of the lid is formed by a portion of the second sheet which protrudes from the first sheet, a corner of the proximal portion on the side opposite to the opening-closing portion has a lower rigidity. Particularly, a corner having a pointed shape (such as a square shape) has a much lower rigidity. As a result, the corner may warp or bend by a force acting upon the corner of the proximal portion during manufacturing of the package. If the lid having such a warp or bend in the corner of the proximal portion is bonded to the top of the body, a wrinkle will occur in the second sheet of the lid.
- In this invention, in order to prevent the occurrence of a wrinkle in the second sheet of the lid, the corner of the proximal portion of the lid on the side opposite to the opening-closing portion is rounded. By thus shaping the corner of the proximal portion, the rigidity of the corner can be made higher, so that the corner can be prevented from warping or bending by the force acting upon the proximal portion. The radius of curvature of the corner of the proximal portion is set to an appropriate value according to the length and the width of the proximal portion, the thickness of the first sheet forming the opening-closing portion, or other similar factors, such that the occurrence of a wrinkle in the second sheet of the lid can be prevented. Preferably, the radius of curvature of the corner is set to 1.5 mm at the minimum. The maximum radius of curvature of the corner of the proximal portion is determined according to the length or strength of the proximal portion or other similar factors.
- In this invention, the thickness of the lid of the package changes at a boundary between the opening-closing portion and the proximal portion. Thus, when the opening-closing portion of the lid is peeled off the top of the body and turned over toward the proximal portion, the boundary between the opening-closing portion and the proximal portion functions as a hinge. Therefore, when the opening-closing portion of the lid is turned over toward the proximal portion, the proximal portion of the lid can be prevented from being peeled off together with the opening-closing portion. Further, when the opening-closing portion of the lid is turned over toward the proximal portion, the opening-closing portion is held tilted toward the proximal portion under its own weight. As a result, the user can perform the opening or closing operation of the opening-closing portion of the lid and the operation of taking out the article by one hand. Further, due to the rounded shape of the corner of the proximal portion of the lid on the side opposite to the opening-closing portion, the rigidity of the corner becomes higher, so that the corner can be prevented from warping or bending by the force acting upon the corner. As a result, the occurrence of a wrinkle in the second sheet (the proximal portion) of the lid can be prevented, so that a package can be manufactured with improved workability.
- In another aspect of the invention, in order to prevent the occurrence of a wrinkle in the second sheet of the lid, the corner of the proximal portion of the lid on the side opposite to the opening-closing portion is chamfered by cutting off a tip end portion of a square (for example, right-angled) corner in a predetermined chamfering dimension at a predetermined chamfering angle. The chamfering angle is an angle of a cutting face with respect to one of the edges which form the corner, and the chamfering dimension is a distance between a cutting point and the tip end of the corner. By chamfering the corner of the proximal portion, the rigidity of the corner becomes higher, so that the proximal portion can be prevented from warping or bending by the force acting upon the proximal portion. For chamfering the corner of the proximal portion, the chamfering angle and the chamfering dimension are set to appropriate values according to the length and the width of the proximal portion, the thickness of the first sheet forming the opening-closing portion, or other similar factors, such that the rigidity of the proximal portion of the lid can be made higher and thus the occurrence of a wrinkle in the second sheet of the lid can be prevented. Preferably, the chamfering angle is set to 45 degrees (or about 45 degrees) and the chamfering dimension is set to 1.5 mm at the minimum. The maximum chamfering dimension is determined according to the length or strength of the proximal portion or other similar factors.
- In this invention, like in the first aspect of the invention, the boundary between the opening-closing portion and the proximal portion functions as a hinge. Therefore, when the opening-closing portion of the lid is turned over toward the proximal portion, the proximal portion of the lid can be prevented from being peeled off together with the opening-closing portion. Further, the opening-closing portion is held tilted toward the proximal portion, so that the user can perform the opening or closing operation of the opening-closing portion of the lid and the operation of taking out the article by one hand. Further, due to the chamfered corner of the proximal portion of the lid on the side opposite to the opening-closing portion, the rigidity of the corner becomes higher, so that the corner can be prevented from warping or bending by the force acting upon the corner. As a result, the occurrence of a wrinkle in the second sheet of the lid can be prevented, so that a package can be manufactured with improved workability.
- According to this invention, the proximal portion of the lid can be prevented from being peeled off the top of the body, and the opening or closing operation of the opening-closing portion of the lid and the operation of taking out the article can be performed by one hand of the user. Further, the occurrence of a wrinkle in the second sheet of the lid can be prevented, so that the workability can be improved.
-
FIG. 1 is a perspective view showing a package according to an embodiment of the present invention, with an opening closed. -
FIG. 2 is a sectional view taken along line II-II inFIG. 1 . -
FIG. 3 is a perspective view showing the package according to the embodiment of the present invention, with an opening opened. -
FIG. 4 is a sectional view taken along line IV-IV inFIG. 3 . -
FIG. 5 is a view for illustrating a problem of a lid of a package in which a proximal portion has a square corner. -
FIG. 6 is a view for illustrating a problem of a lid of a package in which a proximal portion has a square corner. -
FIG. 7 shows a lid of the package according to the embodiment of the present invention. -
FIG. 8 shows a lid of the package according to another embodiment of the present invention. - A
package 100 for storingwet tissues 130 for dispensation is now explained as a representative embodiment of the present invention. -
Wet tissues 130 mean a sheet-type base material made of a fibrous material (cf. nonwoven fabric, gauze, cotton sheet, tissue paper) and impregnated with liquid (cf. alcohol, antiseptic solution, skin lotion). Thewet tissues 130 are features that correspond to the “article” according to this invention. - The construction of the
package 100 of this embodiment is explained with reference toFIGS. 1 to 4 .FIG. 1 is a perspective view showing thepackage 100 with anopening 112 closed, andFIG. 2 is a sectional view taken along line II-II inFIG. 1 .FIG. 3 is a perspective view showing thepackage 100 with theopening 112 opened, andFIG. 4 is a sectional view taken along line IV-IV inFIG. 3 . - The
package 100 includes abody 110 and alid 120. Thebody 110 and thelid 120 are features that correspond to the “body of the package” and the “lid of the package”, respectively, according to this invention. - The
body 110 of thepackage 100 is formed by anupper wall 110 a and abottom wall 110 b and has a wet-tissue storage space 110H in which thewet tissues 130 are stored. Further, thebody 110 of thepackage 100 has theopening 112 which is formed in theupper wall 110 a such that thewet tissues 130 can be taken out of the wet-tissue storage space 110H through the opening. Here, the side of the body in which theopening 112 is formed is referred to as the “upper wall”. The wet-tissue storage space 110H and theopening 112 are features that correspond to the “article storage space” and the “opening of the body of the package through which the article is taken out of the article storage space”, respectively, according to this invention. - The
wet tissues 130 are stored in the wet-tissue storage space 110H in such a manner as to be taken out one by one through theopening 112. Preferably, thewet tissues 130 are stored such that, when a firstwet tissue 130 is taken out through theopening 112, an underlying secondwet tissue 130 is partially exposed outward through theopening 112. For example, thewet tissues 130 are individually folded in two and stacked one on the other in such orientation that a folding direction of thewet tissues 130 is alternately reversed. Then, an end of a lower half (in the laminated state) of awet tissue 130 is located below an end of an upper half (in the laminated state) of an underlyingwet tissue 130. - The
body 110 of thepackage 100 is formed, for example, of a film which can be fusion bonded by heating or heat-sealed (which film is referred to as a “heat-sealing film”). Typically, thebody 110 of thepackage 100 is formed by wrapping thewet tissues 130 with a heat-sealing film, pressing and heating a longitudinal sealing part (not shown) andlateral sealing parts lateral sealing parts body 110 along the direction in which the heat-sealing film is fed during manufacturing of thepackage 100. Thelateral sealing parts package 100, and extend along a direction perpendicular to the feed direction. - Various kinds of films which can be fusion bonded by heating or heat-sealed can be used as the heat-sealing film for forming the
body 110 of thepackage 100. In this embodiment, in which the heat-sealing film is used for packing thewet tissues 130, it is preferable to use one that can hold thewet tissues 130 in wet condition (or prevent drying). For example, a laminate film is used which includes a protective layer made of polyethylene terephthalate (PET) resin, a moisture keeping layer (drying prevention layer) made of aluminum, and a heat-sealing layer made of biaxial oriented polypropylene resin. In order to form thebody 110 by using such a heat-sealing film, edges of the heat-sealing film are laid one on top of the other such that portions of the heat-sealing layer (biaxial oriented polypropylene resin layer) which are located at the longitudinal and lateral sealing parts are opposed to each other. Thus, when the longitudinal and lateral sealing parts are heated, the opposed upper and lower portions of the heat-sealing layer (biaxial oriented polypropylene resin layer) are melted and bonded together at the sealing parts. The protective layer may be omitted. Further, the moisture keeping layer (drying prevention layer) is not limited to an aluminum layer, but includes any layers which can hold thewet tissues 130 in wet condition within the wet-tissue storage space 110H. The heat-sealing layer is not limited to a biaxial oriented polypropylene resin layer, but includes any layers which can be heat-sealed. - In this embodiment, the heat-sealing film which forms the
body 110 has perforations along anopening edge 112 a in a portion corresponding to theupper wall 110 a of thebody 110. Anopening formation part 110A of the heat-sealing film which is bordered by the perforations (the openingedge 112 a) is peeled off thebody 110 when an opening-closingportion 120B of thelid 120 bonded to the top of thebody 110 is peeled off thebody 110 for the first time, which will be described below in further detail. Thus, theopening 112 is formed in theupper wall 110 a of thebody 110 by peeling off theopening formation part 110A from thebody 110. - The opening 112 (the opening
edge 112 a) can have various shapes which allow thewet tissues 130 to be taken out of the wet-tissue storage space 110H, such as an elliptical shape having major and minor axes, a circular shape and a rectangular shape. In this embodiment, the opening 112 (the openingedge 112 a) having an elliptical shape is formed in thebody 110. The elliptical shape of theopening 112 is formed such that the major axis runs in the longitudinal direction of the body 110 (in the direction in which the longitudinal sealing part extends) and the minor axis runs in a direction perpendicular to the longitudinal direction of the body 110 (in the direction in which the lateral sealing parts extend). - Further, a heat-sealing film having the opening 112 formed in advance may also be used to form the
body 110. - The
lid 120 of thepackage 100 includes the opening-closingportion 120B, aproximal portion 120A extending from one end of the opening-closingportion 120B, and a tab portion (tip) 120C extending from the other end of the opening-closingportion 120B (which faces away from theproximal portion 120A). The opening-closingportion 120B has a larger area than theopening 112 of thebody 110. Thelid 120 is bonded to the top of theupper wall 110 a of thebody 110 by an adhesive which is applied to one side of the lid. At this time, theproximal portion 120A is bonded to a portion of the upper wall in which theopening 112 is not formed, and the opening-closingportion 120B is bonded in a position in which it covers theopening 112. Thetab portion 120C is used as a tab for opening and closing the opening-closingportion 120B. Therefore, preferably, an adhesive is not applied to thetab portion 120C. It is suitable to use an adhesive which can bond at least the opening-closingportion 120B to the top of theupper wall 110 a of thebody 110 such that the opening-closingportion 120B can be repeatedly peeled off. For example, a pressure sensitive adhesive is used. - In order to take out a
wet tissue 130 from the wet-tissue storage space 110H, thetab portion 120C of thelid 120 is picked up and the opening-closingportion 120B is peeled off the top of theupper wall 110 a of thebody 110. Then the opening-closingportion 120B is turned over toward theproximal portion 120A in order to open theopening 112. In this state, when the tab portion 120 c is released, thewet tissues 130 cannot be taken out if the opening-closingportion 120B tilts toward the top of theupper wall 110 a of thebody 110 by the resiliency of thelid 120. In this case, it is difficult to perform the opening or closing operation of the opening-closingportion 120B and the operation of taking out thewet tissues 130 by one hand. - In this embodiment, in order to make it possible to take out the
wet tissues 130 from thepackage 100 by one hand, as shown inFIGS. 2 and 4 , thelid 120 of thepackage 100 is formed by afirst sheet 121 and asecond sheet 122 stacked one on the other. Thefirst sheet 121 has a shape corresponding to the opening-closingportion 120B. Thesecond sheet 122 is larger than thefirst sheet 121 and has a shape corresponding to theproximal portion 120A, the opening-closingportion 120B and thetab portion 120C. - The
first sheet 121 is formed, for example, by a sheet or synthetic paper made of polypropylene (PP) resin or polyethylene terephthalate (PET) resin. Thefirst sheet 121 is formed in the thickness of 50 to 100 μm, or preferably in the thickness of 70 μm. Thesecond sheet 122 is formed, for example, by a sheet made of polypropylene (PP) resin or polyethylene terephthalate (PET) resin. Thesecond sheet 122 is formed in the thickness of 10 to 20 μm, or preferably in the thickness of 20 μm. Specifically, thesecond sheet 122 has a thickness smaller than that of thefirst sheet 121. Therefore, the flexural rigidity of thesecond sheet 122 is lower than that of thefirst sheet 121. The way of making the flexural rigidity of thesecond sheet 122 lower than that of thefirst sheet 121 is not limited to the way in which a difference is made between the first and second sheets in thickness, but, for this purpose, the first and second sheets may be made different in materials. - A
first adhesive 123 is applied to one side of thefirst sheet 121, and asecond adhesive 124 is applied to one side of thesecond sheet 121. In this embodiment, thesecond adhesive 124 is not applied to a portion corresponding to thetab portion 120C which is used as a tab. As the first andsecond adhesives - The first and
second sheets second adhesive 124, or in other words, stacked one on the other. At this time, the other side of thefirst sheet 121 is bonded to a portion of the one side of thesecond sheet 122 which corresponds to the opening-closingportion 120B. As a result, the opening-closingportion 120B of thelid 120 is formed by a laminated portion of the first andsecond sheets proximal portion 120A is formed by a portion of thesecond sheet 122 which protrudes from one end of thefirst sheet 121, and thetab portion 120C is formed by a portion of thesecond sheet 122 which protrudes from the other end of thefirst sheet 121. Designated by 120D is a boundary between the opening-closingportion 120B and theproximal portion 120A. The thickness of thelid 120 changes at theboundary 120D. Thelid 120 is bonded to the top of theupper wall 110 a of thebody 110 by thefirst adhesive 123 which is applied to one side of thefirst sheet 121 forming the opening-closingportion 120B and by thesecond adhesive 124 which is applied to one side (on the same side as the one side of the first sheet 121) of thesecond sheet 122 forming theproximal portion 120A. - Under normal conditions, the opening-closing
portion 120B is bonded to the top of theupper wall 110 a of thebody 110 in order to prevent thewet tissues 130 from drying. In order to take out thewet tissues 130, the opening-closingportion 120B is peeled off the top of theupper wall 110 a of thebody 110 so that theopening 112 is opened. Therefore, thesecond adhesive 124 is used which can bond the opening-closingportion 120B to the top of theupper wall 110 a of thebody 110 such that the opening-closingportion 120B can be repeatedly peeled off. - Here, if the adhesive strength of the
second adhesive 124 is the same as that of thefirst adhesive 123, theproximal portion 120A may also be peeled off the top of theupper wall 110 a of thebody 110 when the opening-closingportion 120B is peeled off the top of theupper wall 110 a of thebody 110 and turned over toward theproximal portion 120A. Therefore, in this embodiment, an adhesive having a higher adhesive strength than thefirst adhesive 123 is used as thesecond adhesive 124. - Operation of taking out the
wet tissues 130 from the wet-tissue storage space 110H through theopening 112 of thebody 110 is now described. - In order for a user to take out a
wet tissue 130 through theopening 112, the tab portion (tip) 120C is picked and pulled up by the fingers. For example, thetab portion 120C is pulled up above the top of theupper wall 110 a and toward theproximal portion 110A. Thus, the opening-closingportion 120B bonded to the top of theupper wall 110 a by thefirst adhesive 121 is peeled off the top of theupper wall 110 a beginning at thetab portion 120C and turned over toward theproximal portion 120A. When the opening-closingportion 120B is peeled off for the first time, the openingformation part 110A which is bordered by the perforations formed along the openingedge 112 a is peeled off while being kept bonded to thefirst sheet 121 by thefirst adhesive 123. Thus, theopening 112 is formed in theupper wall 110 a of thebody 110. - In this embodiment, the
second adhesive 124 for bonding theproximal portion 120A of thelid 120 to thebody 110 has a higher adhesive strength than thefirst adhesive 123 for bonding the opening-closingportion 120B of thelid 120 to thebody 110. Therefore, when the opening-closingportion 120B is peeled off up to theboundary 120D between the opening-closingportion 120B and theproximal portion 120A, the user can recognize by increased reaction force applied to the user's fingers that the opening-closingportion 120B has been peeled off up to theboundary 120D. - Further, in this embodiment, the opening-closing
portion 120B of thelid 120 is formed by the laminated portion of the first andsecond sheets proximal portion 120A of thelid 120 is formed by a portion of thesecond sheet 122 which protrudes from thefirst sheet 121. Thus, the thickness of thelid 120 changes at theboundary 120D between the opening-closingportion 120B and theproximal portion 120A. Therefore, when the opening-closingportion 120B is peeled off up to theboundary 120D, theboundary 120D functions as a hinge, so that the force of peeling off the opening-closingportion 120B is absorbed as a force of rotating the opening-closingportion 120B around theboundary 120D. - Further, in this embodiment, the
second sheet 122 has a lower flexural rigidity than thefirst sheet 121. Therefore, as shown inFIG. 4 , when the opening-closingportion 120B is peeled off up to theboundary 120D, the opening-closingportion 120B is held tilted toward theproximal portion 120A under its own weight. In this state, even if thetab portion 120C is released, the opening-closingportion 120B is prevented from tilting toward theopening 112. Therefore, the user can perform the opening or closing operation of the opening-closingportion 120B and the operation of taking out thewet tissues 130 by one hand. - In order to prevent the
wet tissues 130 from drying, when thewet tissues 130 are not in use, thetab portion 120C is returned to theopening 112 side and the opening-closingportion 120B is bonded to the top of theupper wall 110 a of thebody 110 by the user. - As described above, the
lid 120 of this embodiment includes the opening-closingportion 120B formed by the laminated portion of the first andsecond sheets proximal portion 120A formed by a portion of thesecond sheet 122 which protrudes from thefirst sheet 121. Therefore, when thelid 120 is formed by arranging thesecond sheet 122 on top of thefirst sheet 121, thefirst sheet 121 is not present under the portion of thesecond sheet 122 which forms theproximal portion 120A (seeFIG. 5 ). In this case, the portion of thesecond sheet 122 which forms theproximal portion 120A is acted upon by a force under its own weight. This force becomes larger away from theboundary 120D between the opening-closingportion 120B and theproximal portion 120A. - Further, in the
package 100 of this embodiment, as described above, thesecond sheet 122 forming theproximal portion 120A of thelid 120 has a lower flexural rigidity than thefirst sheet 121 forming the opening-closingportion 120B. Therefore, theproximal portion 120A has a lower flexural rigidity. Particularly, a corner of theproximal portion 120A on the side opposite to the opening-closingportion 120B (where an edge extending from theboundary 120D and an edge on the side opposite to the opening-closingportion 120B meet) has a lower flexural rigidity. -
FIG. 5 shows alid 520 having a pointed (for example, right-angled)corner 522 a in aproximal portion 520A on the side opposite to an opening-closingportion 520B. In thelid 520 shown inFIG. 5 , the opening-closingportion 520B is formed by a laminated portion of first andsecond sheets proximal portion 520A is formed by a portion of thesecond sheet 522 which protrudes from one end of thefirst sheet 521, and thetab portion 520C is formed by a portion of thesecond sheet 522 which protrudes from the other end of thefirst sheet 521. Due to the pointed shape of thecorner 522 a of theproximal portion 520A on the side opposite to the opening-closingportion 520B, thecorner 522 a has a particularly lower flexural rigidity. Therefore, when thelid 520 shown inFIG. 5 is formed by arranging thesecond sheet 522 on top of thefirst sheet 521, thecorner 522 a may warp toward thefirst sheet 521 as shown by the hollow arrow. - Further, during manufacturing of the
package 100, in the state in which thesecond sheet 522 is arranged on top of thefirst sheet 521 in thelid 520, a force F is sometimes applied to thelid 520 in a direction of the hollow arrow shown inFIG. 6 . When thecorner 522 a of theproximal portion 520A has a pointed shape, the force F is applied as-is to thecorner 522 a. As a result, thecorner 522 a may bend as shown by the solid arrow inFIG. 6 . - As described above, when the
corner 522 a of theproximal portion 520A has a pointed shape, thecorner 522 a may warp or bend. If thelid 520 having such a warp or bend is bonded to the top of thebody 110, a wrinkle will occur in theproximal portion 520A of thelid 520. - Therefore, in this embodiment, a corner of the proximal portion is provided with a greater flexural rigidity in order to prevent the occurrence of a warp or a bend so as to prevent the occurrence of a wrinkle in the proximal portion of the lid.
-
FIG. 7 shows thelid 120 of this embodiment. As described above, thelid 120 of this embodiment includes the opening-closingportion 120B formed by the laminated portion of the first andsecond sheets proximal portion 120A formed by the portion of thesecond sheet 122 which protrudes from one end of thefirst sheet 121, and thetab portion 120C formed by the portion of thesecond sheet 122 which protrudes from the other end of the first sheet 121 (which faces away from theproximal portion 120A). Thecorner 122 a of theproximal portion 120A on the side opposite to the opening-closingportion 120B is rounded. For such rounding operation, a radius of curvature of the rounded corner is set. When thecorner 122 a of theproximal portion 120A has a rounded shape, as shown inFIG. 7 , the force F acting upon thecorner 122 a is scattered. Therefore, the rigidity of thecorner 122 a becomes higher than that of a corner having a pointed shape such as a square shape. Thus, thecorner 122 a can be prevented from warping or bending by the force acting upon thecorner 122 a, so that the occurrence of a wrinkle in theproximal portion 120A of thelid 120 can be prevented. - The radius of curvature of the
corner 122 a is set to an appropriate value according to the shape (the length along the longitudinal direction of thelid 120 and the width in a direction perpendicular to the longitudinal direction of the lid 120) of theproximal portion 120A, the thickness of thefirst sheet 121 forming the opening-closingportion 120B, or other similar factors, such that the occurrence of a warp or a bend in thecorner 122 a of theproximal portion 120A can be prevented. In experiments made on thelids 120 of various dimensions, a wrinkle has occurred in theproximal portion 120A of thelid 120 when the radius of curvature of thecorner 122 a is 1 mm, but no wrinkle has occurred in theproximal portion 120A of thelid 120 when the radius is 1.5 mm. The experimental results show that it is preferable to set the radius of curvature of thecorner 122 a to 1.5 mm at the minimum. The maximum radius of curvature of thecorner 122 a is determined according to the length of theproximal portion 120A, a desired strength of theproximal portion 120A or other similar factors. - The shape of the corner of the proximal portion is not limited to the rounded shape. A differently-shaped
lid 420 is shown inFIG. 8 . - In the
lid 420 shown inFIG. 8 , acorner 422 a of aproximal portion 420A on the side opposite to an opening-closingportion 420B is chamfered by cutting off a tip end portion of thecorner 422 a. For chamfering, a chamfering angle θ and a chamfering dimension m are set. The chamfering angle θ represents an angle of a cutting face with respect to one of the edges which form thecorner 422 a, or, for example, an angle of a cutting face with respect to anedge 422 d of theproximal portion 420A on the side opposite to the opening-closingportion 420B. The chamfering dimension m represents a distance between a cutting point and the tip end of thecorner 422 a, or, for example, a distance between a cutting point and anedge 422 c which extends from aboundary 420D between the opening-closingportion 420B and theproximal portion 420A. Also in the case in which thecorner 422 a of theproximal portion 420A is chamfered, as shown inFIG. 8 , the force F acting upon thecorner 422 a is scattered. Therefore, the rigidity of thecorner 422 a becomes higher than that of a corner having a pointed shape such as a square shape. Thus, thecorner 422 a can be prevented from warping or bending by the force acting upon thecorner 422 a, so that the occurrence of a wrinkle in theproximal portion 420A of thelid 420 can be prevented. - The chamfering shape (chamfering angle and chamfering dimension) of the
corner 422 a of theproximal portion 420A is set according to the shape (the length and the width) of theproximal portion 420A of thelid 420, the thickness of thefirst sheet 121 forming the opening-closingportion 420B, or other similar factors. From the above-described experimental results, it is found preferable to set the chamfering shape of thecorner 422 a such that the chamfering angle is about 45 degrees and the chamfering dimension is 1.5 mm at the minimum. The maximum chamfering dimension of thecorner 422 a is determined according to the length of theproximal portion 420A, a desired strength of theproximal portion 420A or other similar factors. - The present invention is not limited to the construction of the above-mentioned embodiments, but rather, may be added to, changed, replaced with alternatives or otherwise modified.
- The package of this invention is not limited to a package for storing a sheet-type article, such as wet tissues, but it can also be formed as a package for storing various other articles.
- The
opening 112 of thepackage 100 is described as being formed in theupper wall 110 a of thebody 110, but it is essential that at least part of theopening 112 is formed in theupper wall 110 a of thebody 110. - The
lid 120 of thepackage 100 is described as being formed by theproximal portion 120A, the opening-closingportion 120B and the tab portion (tip) 120C, but it may also be formed by theproximal portion 120A and the opening-closingportion 120B. - The adhesive for bonding the
proximal portion 120A of thelid 120 of thepackage 100 to the top of thebody 110 may be an adhesive having an adhesive strength with which theproximal portion 120A can be removably bonded to the top of thebody 110, or it may be an adhesive having a adhesive strength with which theproximal portion 120A can be firmly (irremovably) bonded to the top of thebody 110. - The
lid 120 of thepackage 100 is described as being formed by a lamination of the first andsecond sheets - The
opening 112 is described as being formed by forming perforations along the openingedge 112 a in theupper wall 110 a of thebody 110 and peeling off theopening formation part 110A bordered by the perforations, via the adhesive applied to thelid 120. However, thebody 110 having the opening 112 formed in advance may also be used. In this case, preferably, thefirst adhesive 123 is applied to an entire area of thelid 120 other than an area corresponding to theopening 112. - The
package 100 is not limited to the construction described in the above embodiments. For example, the shape of thepackage 100, the shape and position of theopening 112, or the shape and position of thelid 120 can be appropriately changed. Further, various manners can be used to pack the article in thepackage 100. -
- 100 package (sheet-type article package)
- 110 body of the package
- 110 a upper wall
- 110 b bottom wall
- 110A opening formation part
- 110H wet-tissue storage space (sheet-type article storage space)
- 111 a, 111 b lateral sealing part
- 112 opening
- 112 a opening edge
- 120, 420, 520 lid of the package
- 120A, 420A, 520A proximal portion
- 120B, 420B, 520B opening-closing portion
- 120C, 420C, 520C tab portion (tip)
- 120D, 420D, 520D boundary
- 121, 521 first sheet
- 122, 422, 522 second sheet
- 122 a, 422 a, 522 a corner
- 123, 523 first adhesive
- 124, 524 second adhesive
- 130 wet tissue (sheet-type article)
Claims (2)
1. A package comprising a body and a lid, the body having an article storage space in which an article is stored and an opening through which the article is taken out of the article storage space, the lid having an opening-closing portion that covers the opening of the body and a proximal portion that extends from the opening-closing portion, and the lid being bonded to a top of the body by an adhesive applied to one side of the lid such that the opening-closing portion can be peeled off, wherein:
the opening-closing portion of the lid is formed by a laminated portion of a first sheet and a second sheet which is larger than the first sheet, and the proximal portion of the lid is formed by a portion of the second sheet which protrudes from the first sheet, so that one side of the lid comprises a side of the first sheet forming the opening-closing portion which faces away from the second sheet and a side of the second sheet forming the proximal portion which faces the first sheet, and
a corner of the proximal portion of the lid on the side opposite to the opening-closing portion is rounded.
2. A package comprising a body and a lid, the body having an article storage space in which an article is stored and an opening through which the article is taken out of the article storage space, the lid having an opening-closing portion that covers the opening of the body and a proximal portion that extends from the opening-closing portion, and the lid being bonded to a top of the body by an adhesive applied to one side of the lid such that the opening-closing portion can be peeled off, wherein:
the opening-closing portion of the lid is formed by a laminated portion of a first sheet and a second sheet which is larger than the first sheet, and the proximal portion of the lid is formed by a portion of the second sheet which protrudes from the first sheet, so that one side of the lid comprises a side of the first sheet forming the opening-closing portion which faces away from the second sheet and a side of the second sheet forming the proximal portion which faces the first sheet, and
a corner of the proximal portion of the lid on the side opposite to the opening-closing portion is chamfered.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008174010A JP2010013144A (en) | 2008-07-02 | 2008-07-02 | Package |
JP2008-174010 | 2008-07-02 | ||
PCT/JP2009/061988 WO2010001904A1 (en) | 2008-07-02 | 2009-06-30 | Package body |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110163100A1 true US20110163100A1 (en) | 2011-07-07 |
Family
ID=41465996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/001,737 Abandoned US20110163100A1 (en) | 2008-07-02 | 2009-06-30 | Package |
Country Status (9)
Country | Link |
---|---|
US (1) | US20110163100A1 (en) |
EP (1) | EP2308774A4 (en) |
JP (1) | JP2010013144A (en) |
KR (1) | KR20110027796A (en) |
CN (1) | CN102076577A (en) |
AR (1) | AR072416A1 (en) |
AU (1) | AU2009267290A1 (en) |
EA (1) | EA201100112A1 (en) |
WO (1) | WO2010001904A1 (en) |
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US20120031793A1 (en) * | 2010-08-05 | 2012-02-09 | North American Rescue, Llc | Packaging for multiple chest wound seals for preventing pneumothorax |
US20140048438A1 (en) * | 2012-08-15 | 2014-02-20 | Avery Dennison Corporation | Packaging Reclosure Label for High Alcohol Content Products |
US9394085B2 (en) | 2012-06-04 | 2016-07-19 | Kao Corporation | Package body |
US20160251136A1 (en) * | 2013-10-15 | 2016-09-01 | Relieves Egara, Sl | Opening/closing device for a disposable flexible container |
US9463896B2 (en) | 2014-01-31 | 2016-10-11 | Graphic Packaging International, Inc. | Carton with opening feature |
US9636895B2 (en) | 2006-06-20 | 2017-05-02 | Avery Dennison Corporation | Multilayered polymeric film for hot melt adhesive labeling and label stock and label thereof |
US9662867B2 (en) | 2006-06-14 | 2017-05-30 | Avery Dennison Corporation | Conformable and die-cuttable machine direction oriented labelstocks and labels, and process for preparing |
USRE46911E1 (en) | 2002-06-26 | 2018-06-26 | Avery Dennison Corporation | Machine direction oriented polymeric films and methods of making the same |
US11279541B2 (en) | 2016-06-30 | 2022-03-22 | Philip Morris Products S.A. | Resealable container with improved reclosable adhesive label |
US11459488B2 (en) | 2014-06-02 | 2022-10-04 | Avery Dennison Corporation | Films with enhanced scuff resistance, clarity, and conformability |
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JP5878414B2 (en) | 2012-03-30 | 2016-03-08 | ユニ・チャーム株式会社 | Package and package package |
JP5416799B2 (en) * | 2012-03-30 | 2014-02-12 | ユニ・チャーム株式会社 | Package and package package |
WO2013170433A1 (en) | 2012-05-15 | 2013-11-21 | The Procter & Gamble Company | Absorbent article having characteristic waist end |
JP6178061B2 (en) * | 2012-09-28 | 2017-08-09 | ユニ・チャーム株式会社 | Package |
JP5525586B2 (en) * | 2012-11-15 | 2014-06-18 | 石田レーベル株式会社 | Raw material roll of packaging material film, manufacturing method thereof, plastic container, packaging film and packaging container |
CN103640779A (en) * | 2013-11-08 | 2014-03-19 | 苏州宝丽洁日化有限公司 | Liquid leakage prevention repeatedly-used sticker for wet tissue |
KR20160148555A (en) * | 2014-04-30 | 2016-12-26 | 킴벌리-클라크 월드와이드, 인크. | Resealable label with hinge for use with dispenser package, and package having same |
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USRE46911E1 (en) | 2002-06-26 | 2018-06-26 | Avery Dennison Corporation | Machine direction oriented polymeric films and methods of making the same |
US9662867B2 (en) | 2006-06-14 | 2017-05-30 | Avery Dennison Corporation | Conformable and die-cuttable machine direction oriented labelstocks and labels, and process for preparing |
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Also Published As
Publication number | Publication date |
---|---|
CN102076577A (en) | 2011-05-25 |
EP2308774A4 (en) | 2012-04-04 |
JP2010013144A (en) | 2010-01-21 |
AR072416A1 (en) | 2010-08-25 |
EA201100112A1 (en) | 2011-08-30 |
AU2009267290A1 (en) | 2010-01-07 |
KR20110027796A (en) | 2011-03-16 |
EP2308774A1 (en) | 2011-04-13 |
WO2010001904A1 (en) | 2010-01-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: UNI-CHARM CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:UEDA, TAKAHIRO;TAKEDA, EISUKE;SIGNING DATES FROM 20110113 TO 20110117;REEL/FRAME:025974/0442 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |