WO2016117668A1 - 積層剥離容器 - Google Patents
積層剥離容器 Download PDFInfo
- Publication number
- WO2016117668A1 WO2016117668A1 PCT/JP2016/051806 JP2016051806W WO2016117668A1 WO 2016117668 A1 WO2016117668 A1 WO 2016117668A1 JP 2016051806 W JP2016051806 W JP 2016051806W WO 2016117668 A1 WO2016117668 A1 WO 2016117668A1
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- WO
- WIPO (PCT)
- Prior art keywords
- outside air
- layer
- container
- air introduction
- introduction hole
- Prior art date
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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
- B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
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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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/023—Neck construction
- B65D1/0238—Integral frangible closures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4273—Auxiliary operations after the blow-moulding operation not otherwise provided for
- B29C49/4278—Cutting
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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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
-
- 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
-
- 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
- B65D1/0215—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features multilayered
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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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/023—Neck construction
-
- 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/023—Neck construction
- B65D1/0246—Closure retaining means, e.g. beads, screw-threads
-
- 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/0261—Bottom construction
-
- 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
- B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
-
- 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
- B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
- B65D77/062—Flexible containers disposed within polygonal containers formed by folding a carton blank
- B65D77/065—Spouts, pouring necks or discharging tubes fixed to or integral with the flexible container
-
- 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
- B65D79/00—Kinds or details of packages, not otherwise provided for
- B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
- B65D79/008—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars
-
- 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
- B65D2501/00—Containers having bodies formed in one piece
- B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
- B65D2501/0018—Ribs
- B65D2501/0036—Hollow circonferential ribs
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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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
- B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
- B65D77/062—Flexible containers disposed within polygonal containers formed by folding a carton blank
- B65D77/065—Spouts, pouring necks or discharging tubes fixed to or integral with the flexible container
- B65D77/067—Spouts, pouring necks or discharging tubes fixed to or integral with the flexible container combined with a valve, a tap or a piercer
Definitions
- the present invention relates to a delamination container.
- Such a delamination container includes an inner bag constituted by an inner layer and an outer shell constituted by an outer layer.
- a delamination container there is one in which an EVOH layer is provided as an inner layer.
- the EVOH layer has an excellent oxygen barrier property, so that a delamination container having an excellent oxygen barrier property can be obtained.
- the first aspect of the present invention has been made in view of such circumstances, and provides a delamination container having improved oxygen barrier properties.
- Patent Document 2 in order to solve the problem that the outside air is not smoothly introduced between the outer shell and the inner bag after the contents are discharged, it spreads at a central angle of 90 degrees downward from the outside air introduction hole provided in the mouth. Vertical ribs are provided in the region.
- the technique of Patent Document 2 is based on the premise that the outside air introduction hole is formed in the mouth portion of the container, and is difficult to apply to the type of delamination container in which the outside air introduction hole is provided in the container housing part. .
- the second aspect of the present invention has been made in view of such circumstances, and it is possible to smoothly introduce outside air between the outer shell and the inner bag in the laminated peeling container having the outside air introduction hole in the container accommodating portion.
- the present invention provides a possible delamination container.
- the third aspect of the present invention has been made in view of such circumstances, and provides a delamination container having excellent outer shell resilience even when a shrink film is attached to the container body.
- the fourth aspect of the present invention has been made in view of such conventional circumstances, and an object thereof is to provide a delamination container capable of reliably using up the contents to the end.
- a delamination container including a container body having an outer shell and an inner bag, and the inner bag shrinks as the contents are reduced, and constitutes the inner bag.
- the inner layer includes an outer layer, an adhesive layer, and an inner layer in order from the outer surface side of the container.
- the outer layer includes an EVOH layer, and the inner layer has a thickness of 60 to 200 ⁇ m and a flexural modulus of 250 MPa or less. And a thickness of the inner layer / the thickness of the EVOH layer is 1.1 to 5, and a thickness of the entire inner layer is 100 to 250 ⁇ m.
- the present inventor has intensively studied to improve the oxygen barrier property, and as a result, the water contained in the contents contained in the container penetrates the inner layer and the adhesive layer and reaches the EVOH layer, thereby reaching the EVOH layer. It has been found that the oxygen barrier property of the is lowered. Based on such knowledge, in order to solve the problem of lowering the oxygen barrier property, the EVOH layer was first made thicker than before. However, since the EVOH layer has high rigidity, it has been found that if the EVOH layer is thickened, the rigidity of the inner layer increases and the inner bag is difficult to shrink.
- the inner layer made of low-density polyethylene or linear low-density polyethylene was thickened so that the moisture contained in the contents did not easily reach the EVOH layer.
- the rigidity of the inner layer increases and the inner bag is difficult to shrink.
- the inventor determined that the inner layer thickness, the inner layer bending elastic modulus, the inner layer to EVOH layer thickness ratio, and the inner layer total thickness all fall within a specific numerical range. In this case, it was found that the deterioration of the oxygen barrier property can be effectively suppressed while suppressing the deterioration of the shrinkability of the inner bag, and the first aspect of the present invention has been completed.
- the thickness of each layer means the thickness in the location where the thickness is the thinnest in a container main body.
- the inner layer is made of low density polyethylene or linear low density polyethylene.
- the inner layer has a thickness of 70 to 150 ⁇ m and a flexural modulus of 200 MPa or less, and the value of (the thickness of the inner layer / the thickness of the EVOH layer) is 1.5 to 4, The total thickness of the inner layer is 120 to 200 ⁇ m.
- the 2nd viewpoint of this invention is equipped with the accommodating part which accommodates the content, and the opening part which discharges the said content from the said accommodating part, and has an outer shell and an inner bag, and reduction of a content
- the inner bag is provided with a container body that peels and contracts from the outer shell, and the outer shell communicates an intermediate space between the outer shell and the inner bag and an outer space of the container body.
- a delamination container is provided in which groove-like ribs are provided so as to sandwich the outside air introduction hole.
- the present inventor discovered a phenomenon that the outer shell shape may be difficult to be restored after the first discharge of the contents when developing a delamination container having an outside air introduction hole in the container housing. And when the cause was investigated in detail, when the rigidity of the inner bag was relatively large, the inner bag was less likely to deflate. As a result, the inner bag pressed the valve member against the outer shell, or the inner bag was in close contact with the valve member. It has been found that this is caused by blocking the vent hole of the valve member and making it difficult for outside air to be smoothly introduced into the space between the outer shell and the inner bag. Based on this finding, when the study was conducted to make the inner bag easy to wither, it was found that the inner bag can be made to wither easily by providing a grooved rib so as to sandwich the outside air introduction hole. The second viewpoint has been completed.
- the groove-like rib is provided so as to sandwich the outside air introduction hole from both sides in the circumferential direction.
- the groove-shaped rib includes first and second groove-shaped ribs provided to be inclined and extend away from the outside air introduction hole toward the mouth portion in the circumferential direction.
- the first and second groove-like ribs are provided so that the angle on the front view is 30 to 100 degrees.
- the first and second groove-like ribs are provided so that the distance between the intersection of the extension lines and the center of the outside air introduction hole is at a position of 5 to 35 mm on the front view.
- the outside air introduction hole and the groove-like rib are provided on substantially the same plane.
- the groove-like rib extends so as to surround the outside air introduction hole in an arc shape.
- the groove rib is composed of a plurality of groove portions spaced from each other in the circumferential direction of the groove rib.
- the groove-like rib includes a plurality of arc portions provided to be separated from each other in a direction away from the outside air introduction hole.
- the outside air introduction hole is formed in a valve member mounting recess provided in the housing portion, and the groove-shaped rib is provided so as to sandwich the valve member mounting recess.
- the groove-like rib has a semicircular cross section.
- a laminated peeling container comprising a container main body, a cap, and a tubular shrink film
- the container main body includes a storage portion for storing contents, and the storage portion from the storage portion.
- a container for discharging contents, and the container and the mouth are provided with an outer layer and an inner layer, and the inner bag formed by the inner layer is contracted as the contents are reduced.
- the cap is attached to the mouth portion, the shrink film is provided so as to be in close contact with the outer periphery of the housing portion, and the outer shell is disposed in the housing portion between the outer shell and the inner bag.
- a delamination container having an outside air introduction hole communicating with a space and an outside space, wherein the shrink film is provided so as to cover the outside air introduction hole and has a ventilation hole for introducing outside air into the outside air introduction hole.
- the present inventor investigated the cause of the deterioration of the restoring property of the outer shell when the shrink film was attached, and as described in Patent Document 1, the delamination in which the outside air introduction hole is provided in the housing portion of the container body In the container, when the shrink film is attached so as to be in close contact with the outer periphery of the housing portion, the outside air introduction hole is blocked, so that the outside air is not smoothly introduced between the outer shell and the inner bag. It was found that resilience deteriorated.
- the present inventor can prevent deterioration of the recoverability of the outer shell even when the shrink film is attached by providing the shrink film with a ventilation hole for introducing outside air into the outside air introduction hole. As a result, the third aspect of the present invention has been completed.
- the vent hole is provided such that outside air is introduced into the outside air introduction hole regardless of a relative position of the shrink film in the circumferential direction with respect to the container body.
- the vent hole includes a plurality of pores provided along a circumferential direction of the shrink film.
- the vent hole includes a plurality of pores provided along the axial direction of the shrink film.
- the outside air introduction hole is provided in a recess provided in the housing portion, and the shrink film is provided so as to cover the recess.
- the shrink film is provided so as to be in close contact with the outer periphery of the housing portion and the cap.
- a container body having an outer shell and an inner bag, and the inner bag shrinks as the contents are reduced, and an intermediate space between the outer shell and the inner bag.
- a delamination container including a valve member that adjusts the flow of air to and from the external space of the container body, wherein the container body discharges the contents from a storage part that stores the contents and the storage part.
- a lid portion is assembled to the mouth portion, and a substantially straight pinch-off portion is formed at the bottom portion of the container body, intersecting an extension line of one end portion of the pinch-off portion.
- a delamination container characterized in that one adhesive band that is continuous in the height direction of the side wall is formed at the side wall portion position.
- the inner bag is linearly supported at the bottom by the pinch-off part, and the inner bag shrinks from both sides around the pinch-off part as the contents are discharged. I will do it.
- the adhesive band is formed in a direction orthogonal to the pinch-off portion, a substantially triangular space remains along the adhesive band before the end of discharge, and this constitutes a flow path. . Therefore, the contents remaining at the end are quickly discharged through the flow path by tilting the delamination container so that the flow path of the contents is secured to the end and the adhesive band is located below.
- the lid portion is assembled to the mouth portion so that the position of the hinge portion is substantially 180 ° opposite to the formation position of the adhesive band.
- FIG. 2 is a cross-sectional view corresponding to the BB cross section in FIG. 1 (a), showing a state where the valve member 5 is mounted on the container body 3 of FIG. 1 and the bottom seal protrusion 27 is bent. It is an enlarged view of the area
- FIG. 4 is an enlarged view of a region including a bottom surface 29 in FIG.
- FIG. 3 is a cross-sectional view showing a layer configuration of an inner layer 13.
- FIG. 10B is a cross-sectional view taken along the line BB in FIG. 10B in a state where the valve body 5 is mounted on the container body 3 of FIG. 10, and
- FIG. 10A shows a folded portion 14a formed in the inner bag 14 at the edge of the inner arc portion 7i.
- FIG. 10 shows a state in which the folded portion 14a is formed in the inner bag 14 at the edge of the outer arc portion 7j.
- 10A is a cross-sectional view taken along the line CC in FIG. 10B in a state where the valve member 5 is mounted on the container body 3 in FIG. 10, and FIGS. It is a schematic diagram which shows the angle between the bottom surfaces of 7b.
- (B) shows a state where the groove 7b has no bent portion Y
- (c) shows a state where the groove 7b has a bent portion.
- FIG. 10 is a cross-sectional view of a portion corresponding to the cross section BB in FIG. 10B in the delamination container 1 of the third embodiment of the present invention.
- (A) shows the state after preliminary peeling of the inner bag 14, and (b) shows the state after the inner bag 14 is filled with the contents.
- (A) is a front view of the state before attaching the cap 23 to the container main body 3
- (b) is a front view of the state after attaching the cap 23 to the container main body 3
- (c) is ( It is a front view which shows the state which attached the shrink film 31 to the container main body 3 and the cap 23 of the state of b).
- part covered with the shrink film 31 is shown with the dotted line.
- FIG. 1 is a front view which shows the state in which the pinhole 32, the perforation 33 of the circumferential direction, and the perforation 34 of the axial direction were provided in the shrink film 31, respectively, as a ventilation hole.
- a portion covered with the shrink film 31 is not shown.
- FIG. 16 is a front view
- FIG. 16 is a rear view
- FIG. 16 is a plan view
- (d) is a bottom view.
- FIG. 16 is a figure which shows the usage method of the lamination peeling container of 4th Embodiment of this invention, (a) is the state before use, (b) is the state which inclined, (c) is A squeeze state and (d) show an external air introduction state, respectively.
- (A)-(c) is a cross-sectional view showing the contracted state of the inner bag during use of the delamination container of the fourth embodiment of the present invention, (a) shows the state before use, (b ) Indicates a contracted state, and (c) indicates a state immediately before the end of use.
- a delamination container 1 As shown in FIGS. 1 to 4, a delamination container 1 according to a first embodiment of the present invention includes a container body 3 and a valve member 5.
- the container body 3 includes a storage portion 7 that stores the contents, and a mouth portion 9 that discharges the contents from the storage portion 7.
- the bag container body 3 includes an outer layer 11 and an inner layer 13 in the housing portion 7 and the mouth portion 9, an outer shell 12 is constituted by the outer layer 11, and an inner bag 14 is constituted by the inner layer 13.
- backup peeling process which peels the inner layer 13 from the outer layer 11 may be performed before accommodating the content in the accommodating part 7, the preliminary
- the mouth portion 9 is provided with a male screw portion 9d.
- a cap or a pump having a female screw is attached to the male screw portion 9d.
- FIG. 4 shows a part of the cap 23 having the inner ring 25.
- the outer diameter of the inner ring 25 is substantially the same as the inner diameter of the mouth portion 9, and the outer surface of the inner ring 25 abuts against the abutting surface 9a of the mouth portion 9, thereby preventing leakage of the contents.
- the enlarged diameter portion 9b is provided at the tip of the mouth portion 9, and the inner diameter of the enlarged diameter portion 9b is larger than the inner diameter of the contact portion 9e. The outer surface is not in contact with the enlarged diameter portion 9b.
- the mouth portion 9 includes an inner layer support portion 9c that suppresses the slippage of the inner layer 13 at a position closer to the housing portion 7 than the contact portion 9e.
- the inner layer support portion 9 c is formed by providing a constriction at the mouth portion 9. Even when the enlarged diameter portion 9 b is provided in the mouth portion 9, the inner layer 13 may be separated from the outer layer 11 due to friction between the inner ring 25 and the inner layer 13. In the present embodiment, even in such a case, the inner layer support portion 9c suppresses the displacement of the inner layer 13, so that the inner bag 14 can be prevented from falling into the outer shell 12.
- the housing part 7 includes a shoulder part 7d, a small diameter body part 7e, and a large diameter body part 7g in order from the mouth part 9 side.
- the small-diameter trunk 7e and the large-diameter trunk 7g are substantially cylindrical, and the large-diameter trunk 7g has a larger cross-sectional area than the small-diameter trunk 7e.
- the shoulder part 7d is a part that connects the mouth part 9 and the small diameter body part 7e
- the enlarged diameter part 7f is a part that connects the small diameter body part 7e and the large diameter body part 7g.
- the small-diameter body 7e is provided with a valve member mounting recess 7a having an inclined plane, and an outside air introduction hole 15 is provided in the recess 7a.
- the outside air introduction hole 15 is a through hole provided only in the outer shell 12, and communicates the intermediate space 21 between the outer shell 12 and the inner bag 14 and the outer space S of the container body 3.
- the outside air introduction hole 15 is equipped with a valve member 5 that adjusts the flow of air between the intermediate space 21 and the external space S.
- the concave portion 7a is provided in order to avoid interference between the valve member 5 and the shrink film when the accommodating portion 7 is covered with the shrink film.
- an air circulation groove 7b extending from the recess 7a toward the mouth 9 is provided so that the recess 7a is not sealed with the shrink film.
- first and second groove-like ribs 7c1 and 7c2 are provided in the small diameter body portion 7e so as to sandwich the outside air introduction hole 15.
- the groove-like ribs 7c1 and 7c2 are provided so as to sandwich the outside air introduction hole 15 (more specifically, the recess 7a) from both sides in the circumferential direction.
- the groove-like ribs 7c1 and 7c2 are formed so as to be inclined and extended toward the mouth portion 9 away from the outside air introduction hole 15 in the circumferential direction. That is, the groove-like ribs 7c1 and 7c2 are provided in a substantially V shape.
- the groove-like ribs 7c1 and 7c2 are provided so as to reach the shoulder 7d from a position farther from the opening 9 than the outside air introduction hole 15. Further, the groove-like ribs 7c1 and 7c2 are provided outside the range of the region d extending at a central angle of 90 degrees below the outside air introduction hole 15. The groove-like ribs 7c1 and 7c2 are provided so that the angle a on the front view is 30 to 100 degrees (preferably 45 to 80 degrees). Further, the groove-like ribs 7c1 and 7c2 are provided so that the distance b between the intersection point Q of the extension line and the center of the outside air introduction hole 15 is 5 to 35 mm (preferably 10 to 25 mm) on the front view. ing.
- the distance c on the front view from the intersection Q to the shoulder 7d is 20 to 60 mm (preferably 30 to 45 mm).
- b / c is 0.2 to 0.8 (preferably 0.3 to 0.6).
- the front view is perpendicular to a plane ⁇ formed by the edge of the mouth 9, and the center axis C of the mouth 9 and the outside air introduction hole 15. It is the figure which looked at the surface perpendicular
- the outside air introduction hole 15 and the groove-like ribs 7c1 and 7c2 are provided on substantially the same plane. The technical significance of providing the groove-like ribs 7c1 and 7c2 and the reason why the groove-like ribs 7c1 and 7c2 are formed as described above in this embodiment will be described later.
- the valve member 5 is provided on the shaft 5a disposed in the outside air introduction hole 15 and the intermediate space 21 side of the shaft 5a, and has a larger sectional area than the shaft 5a.
- locking part 5b which are provided in the external space S side of the axial part 5a and prevent the valve member 5 entering the intermediate space 21 are provided.
- the valve member 5 can be mounted on the container body 3 by inserting the lid 5c into the intermediate space 21 while the lid 5c pushes the outside air introduction hole 15 wide. Therefore, it is preferable that the tip of the lid portion 5c has a tapered shape. Such a valve member 5 can be mounted simply by pushing the lid 5c into the intermediate space 21 from the outside of the container body 3, and thus is excellent in productivity.
- the lid portion 5c is configured to substantially close the outside air introduction hole 15 when the outer shell 12 is compressed, and has a shape in which the cross-sectional area decreases as the shaft portion 5a is approached. Moreover, the latching
- the pressure in the intermediate space 21 becomes higher than the external pressure, and the air in the intermediate space 21 leaks out from the outside air introduction hole 15.
- the lid 5c moves toward the outside air introduction hole 15 by this pressure difference and the flow of air, and the lid 5c closes the outside air introduction hole 15 as shown in FIG. Since the cross-sectional area becomes smaller as the lid portion 5 c approaches the shaft portion 5 a, the lid portion 5 c easily fits into the outside air introduction hole 15 and closes the outside air introduction hole 15.
- the outer shell 12 When the outer shell 12 is further compressed in this state, the pressure in the intermediate space 21 is increased. As a result, the inner bag 14 is compressed and the contents in the inner bag 14 are discharged. Further, when the compressive force applied to the outer shell 12 is released, the outer shell 12 tries to recover by its own elasticity. At this time, as shown in FIG. 5 (c), the lid portion 5 c is separated from the outside air introduction hole 15, the outside air introduction hole 15 is released from being blocked, and outside air is introduced into the intermediate space 21. Further, the flow passage 5d is provided in the locking portion 5b so that the locking portion 5b does not block the outside air introduction hole 15, and even when the locking portion 5b is in contact with the outer shell 12, the flow passage 5d is provided. Outside air can be introduced into the intermediate space 21 through the passage 5 d and the outside air introduction hole 15.
- FIGS. 6 (a) to 6 (b) problems in the conventional delamination container will be described with reference to FIGS. 6 (a) to 6 (b).
- the inner bag 14 when the contents are discharged for the first time, the inner bag 14 is inflated by the contents, and the inner bag 14 is in contact with the lid portion 5 c of the valve member 5. Then, when the outer shell 12 and the inner bag 14 are compressed to release the compression force after the contents in the inner bag 14 are discharged, the outer shell 12 tries to restore its original shape by its own elasticity from the lid 5c. Try to leave. Further, since the inner bag 14 also tries to restore its original shape by its own elasticity, a force F in a direction of pressing the lid portion 5c against the outer shell 12 is applied to the lid portion 5c by the inner bag 14.
- groove-like ribs 7c1 and 7c2 are provided so as to sandwich the outside air introduction hole 15.
- a bent portion 14a is formed at the edge of the groove-like ribs 7c1 and 7c2, and the inner bag 14 is bent at the bent portion 14a and deformed toward the inner side of the container.
- the force in the direction of swelling to the outside of the container is reduced.
- the force F in the direction in which the inner bag 14 presses the lid 5c against the outer shell 12 is smaller than that in the prior art shown in FIG. 6, and after the first discharge of the contents, it is easy between the outer shell 12 and the lid 5c.
- a gap is formed in the outer shell 12, and the outer shell 12 is quickly restored to its original shape.
- the groove-like ribs 7c1 and 7c2 are shaped as shown in FIG. 1 in this embodiment.
- the inventor tried to push the inner bag 14 into the container by inserting a rod into the outside air introduction hole 15.
- a substantially V-shaped crease is formed extending obliquely away from the outside air introduction hole 15 toward the mouth portion 9 in the circumferential direction.
- the idea is that the inner bag 14 can be deflated more smoothly by providing the groove-like ribs 7c1 and 7c2 at the positions where the folds can be made, and the groove-like ribs 7c1 are provided at the positions shown in FIG.
- FIG. 7A the groove-like ribs 7c1 and 7c2 are arranged substantially in parallel.
- FIG. 7 (b) the groove-like ribs 7 c 1 and 7 c 2 are formed to extend toward the mouth portion 9 so as to approach the outside air introduction hole 15 in the circumferential direction.
- FIG. 7C the groove-like ribs 7c1 and 7c2 are asymmetrical.
- FIG. 7A the groove-like ribs 7c1 and 7c2 are arranged substantially in parallel.
- FIG. 7 (b) the groove-like ribs 7 c 1 and 7 c 2 are formed to extend toward the mouth portion 9 so as to approach the outside air introduction hole 15 in the circumferential direction.
- FIG. 7C the groove-like ribs 7c1 and 7c2 are asymmetrical.
- FIG. 7A the groove-like ribs 7c1 and 7c2 are arranged substantially in parallel.
- FIG. 7 (b) the groove-like ribs 7 c 1 and 7 c
- groove-like ribs 7c1 and 7c2 are connected by the groove rib 7c3.
- groove-like ribs 7c1 and 7c2 are provided so as to sandwich the outside air introduction hole 15 from both sides in the vertical direction.
- an elliptical groove-like rib 7 c is provided so as to surround the outside air introduction hole 15.
- groove-like ribs 7c1 and 7c2 are provided so as to sandwich the outside air introduction hole 15 formed in the container accommodating portion where the recess 7a is not provided.
- the cross-sectional shape of the groove-shaped rib is not limited to a semicircle, and may be another shape as long as the bent portion 14a is formed.
- the groove-like rib may be formed so that the distance between the point where the groove-like rib is closest to the outside air introduction hole 15 and the edge of the outside air introduction hole 15 is 3 to 30 mm (preferably 5 to 20 mm). preferable. This is because the effect of reducing the force F is particularly great in such a range.
- the distance L2 from the container center axis C to the inner surface of the container at the large diameter body portion 7g is the distance L1 from the container center axis C to the inner surface of the container at the small diameter body portion 7e. It is 1.5 times (preferably 1.6, 1.7, 1.8, 1.9 or 2.0) or more.
- the delamination container 1 of the present embodiment is formed by blow molding, and the larger L2 / L1, the smaller the blow ratio at the small-diameter body 7e, which is the part where the outside air introduction hole 15 is formed.
- the thickness increases, the rigidity of the inner bag 14 increases, and the force with which the inner bag 14 presses the valve member 5 against the outer shell 12 increases. Therefore, the effect obtained by providing the groove-like rib in the delamination container having L2 / L1 of 1.5 or more is particularly great.
- the valve member 5 is configured to open and close the outside air introduction hole 15 by opening and closing the gap between the edge of the outside air introduction hole 15 and the valve member 5 by the movement of the valve member 5.
- the valve member itself may be provided with a through hole and a valve that can be opened and closed, and the outside air introduction hole 15 may be opened and closed by opening and closing the through hole by the action of the valve.
- the valve member having such a configuration is used, there is a problem that the introduction of outside air may be hindered by the inner bag 14 being in close contact with the valve member and closing the vent hole of the valve member.
- the problem can be solved by providing a groove-like rib so as to sandwich the outside air introduction hole 15 as in the present embodiment.
- the bottom surface 29 of the accommodating portion 7 is provided with a central concave region 29 a and a peripheral region 29 b provided around the central concave region 29 a, and the central concave region 29 a has a bottom protruding from the bottom surface 29.
- a seal protrusion 27 is provided.
- the bottom seal protrusion 27 is a seal portion of a laminated parison in blow molding using a cylindrical laminated parison having an outer layer 11 and an inner layer 13.
- the bottom seal protrusion 27 includes a base portion 27d, a thin portion 27a, and a thick portion 27b having a thickness larger than that of the thin portion 27a in this order from the bottom surface 29 side.
- the bottom seal protrusion 27 is in a state of standing substantially perpendicular to the surface P defined by the peripheral region 29b, as shown in FIG.
- the inner layers 13 in the welded portion 27c are easily separated from each other, and the impact resistance is insufficient. Therefore, in this embodiment, the thin-walled portion 27a is softened by blowing hot air to the bottom seal protrusion 27 after blow molding, and the bottom seal protrusion 27 is bent at the thin-walled portion 27a as shown in FIG. Yes.
- the impact resistance of the bottom seal protrusion 27 is improved by a simple process of simply bending the bottom seal protrusion 27. Further, as shown in FIG.
- the bottom seal protrusion 27 does not protrude from the surface P defined by the peripheral region 29b in a bent state. Thus, when the delamination container 1 is erected, the bottom seal protrusion 27 protrudes from the surface P, and the delamination container 1 is prevented from falling over.
- the base portion 27d is provided on the bottom surface 29 side of the thin portion 27a and is thicker than the thin portion 27a.
- the base portion 27d may be omitted, but the thin portion 27a is provided on the base portion 27d.
- the concave region of the bottom surface 29 is provided so as to cross the entire bottom surface 29 in the longitudinal direction of the bottom seal protrusion 27. That is, the central concave region 29a and the peripheral concave region 29c are connected. With such a configuration, the bottom seal protrusion 27 is easily bent.
- the container body 3 includes an outer layer 11 and an inner layer 13.
- the outer layer 11 is composed of, for example, low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and a mixture thereof.
- the outer layer 11 may have a multi-layer configuration. For example, a configuration in which both sides of the repro layer are sandwiched between polypropylene layers may be employed.
- the repro layer refers to a layer that is used by recycling burrs produced during the molding of the container.
- the outer layer 11 is formed thicker than the inner layer 13 so that the restoring property becomes high.
- the outer layer 11 includes a random copolymer layer made of a random copolymer between propylene and another monomer.
- the outer layer 11 may be a single layer of a random copolymer layer or may have a multiple layer configuration. For example, the structure which pinched
- the random copolymer has a content of monomers other than propylene of less than 50 mol%, preferably 5 to 35 mol%. Specifically, this content is, for example, 5, 10, 15, 20, 25, 30 mol%, and may be within a range between any two of the numerical values exemplified here.
- the monomer copolymerized with propylene may be any monomer that improves the impact resistance of the random copolymer when compared with a polypropylene homopolymer, and ethylene is particularly preferable.
- the ethylene content is preferably 5 to 30 mol%, specifically, for example, 5, 10, 15, 20, 25, 30 mol%, and the numerical values exemplified here It may be within the range between any two.
- the weight average molecular weight of the random copolymer is preferably 100,000 to 500,000, and more preferably 100,000 to 300,000. Specifically, the weight average molecular weight is, for example, 10, 15, 20, 25, 30, 35, 40, 45, 500,000, and is within a range between any two of the numerical values exemplified here. Also good.
- the tensile elastic modulus of the random copolymer is preferably 400 to 1600 MPa, more preferably 1000 to 1600 MPa. This is because the shape restoring property is particularly good when the tensile elastic modulus is in such a range.
- the tensile elastic modulus is, for example, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600 MPa, and between any two of the numerical values exemplified here It may be within the range.
- the outer layer 11 may comprise the outer layer 11 by mixing a flexible material, such as a linear low density polyethylene, for example in a random copolymer.
- the material to be mixed with the random copolymer is preferably mixed so as to be less than 50% by weight with respect to the whole mixture so as not to significantly inhibit the effective characteristics of the random copolymer.
- the outer layer 11 can be made of a material in which a random copolymer and linear low-density polyethylene are mixed at a weight ratio of 85:15.
- the inner layer 13 includes an outer layer 13a, an adhesive layer 13c, and an inner layer 13b in this order from the container outer surface side.
- the outer layer 13a is a layer on the outer surface side of the container with respect to the adhesive layer 13c in the inner layer 13, and may be a single layer or a multilayer.
- the inner layer 13b is a layer closer to the inner surface of the container than the adhesive layer 13c in the inner layer 13, and may be a single layer or a multilayer.
- the adhesive layer 13c is a layer that adheres the outer layer 13a and the inner layer 13b, and may be a single layer or a multilayer.
- the adhesive layer 13c can be omitted.
- the outer layer 13a includes an EVOH layer and is preferably a single layer of the EVOH layer. By providing the EVOH layer, the gas barrier property and the peelability from the outer layer 11 can be improved.
- the EVOH layer is a layer made of an ethylene-vinyl alcohol copolymer (EVOH) resin, and is obtained by hydrolysis of ethylene and vinyl acetate copolymer.
- EVOH ethylene-vinyl alcohol copolymer
- the ethylene content of the EVOH resin is, for example, 25 to 50 mol%, and is preferably 32 mol% or less from the viewpoint of oxygen barrier properties.
- the EVOH layer preferably contains an oxygen absorbent. By containing the oxygen absorbent in the EVOH layer, the oxygen barrier property of the EVOH layer can be further improved.
- the thickness of the EVOH layer is preferably 10 to 50 ⁇ m, preferably 20 to 40 ⁇ m, and specifically, for example, 20, 25, 30, 35, 40, 45, and 50 ⁇ m. Or within a range between the two.
- the EVOH layer is too thin, the oxygen barrier property is not sufficiently exhibited, and when the EVOH layer is too thick, the rigidity of the inner layer 13 becomes too large and the inner bag 14 is less likely to be deflated.
- the melting point of the EVOH resin is higher than the melting point of the resin constituting the outer layer 11 (eg, random copolymer).
- the outside air introduction hole 15 is preferably formed in the outer layer 11 using a heating type punching device.
- the outside air introduction hole 15 is formed in the outer layer 11 by making the melting point of the EVOH resin higher than the melting point of the resin constituting the outer layer 11.
- the difference between (the melting point of EVOH) ⁇ (the melting point of the resin constituting the outer layer 11) is preferably large, preferably 15 ° C. or higher, and particularly preferably 30 ° C. or higher.
- the difference in melting point is, for example, 5 to 50 ° C., specifically, for example, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 ° C., and any of the numerical values exemplified here. Or within a range between the two.
- the adhesive layer 13c is a layer having a function of adhering the outer layer 13a and the inner layer 13b.
- an acid-modified polyolefin having a carboxyl group introduced into the above-described polyolefin eg, maleic anhydride-modified polyethylene
- EVA ethylene vinyl acetate copolymer
- An example of the adhesive layer 13c is a mixture of low-density polyethylene or linear low-density polyethylene and acid-modified polyethylene.
- the thickness of the adhesive layer 13c is preferably 10 to 50 ⁇ m, preferably 20 to 40 ⁇ m, and specifically, for example, 20, 25, 30, 35, 40, 45, and 50 ⁇ m. It may be within a range between any two.
- the adhesive layer 13c When the adhesive layer 13c is too thin, the adhesion between the outer layer 13a and the inner layer 13b tends to be insufficient, and when the adhesive layer 13c is too thick, the rigidity of the inner layer 13 becomes too large and the inner bag 14 is difficult to withstand. .
- the inner layer 13b is made of, for example, polyolefin such as low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer and a mixture thereof, and is made of low density polyethylene or linear low density polyethylene. It is preferable to become.
- the thickness of the inner layer 13b is preferably 60 to 200 ⁇ m, more preferably 70 to 150 ⁇ m, and specifically, for example, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115.
- the bending elastic modulus of the inner layer 13b is 250 MPa or less, and 240, 230, 220, 210, 200, 190, 180, 170, 160, 150, or 140 MPa or less is preferable.
- the tensile elastic modulus of the resin constituting the inner surface layer 13b is preferably 50 to 300 MPa, more preferably 70 to 200 MPa. This is because the inner surface layer 13b is particularly flexible when the tensile elastic modulus is in such a range.
- the tensile modulus is specifically, for example, specifically, for example, 50, 100, 150, 200, 250, 300 MPa, and may be within a range between any two of the numerical values exemplified here. .
- the thickness of the entire inner layer 13 is preferably 100 to 250 ⁇ m, more preferably 120 to 200 ⁇ m, and specifically, for example, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210 220, 230, 240, 250 ⁇ m, and may be within a range between any two of the numerical values exemplified here. If the thickness of the entire inner layer 13 is too thin, the oxygen barrier property or suppression of deterioration of the EVOH layer is insufficient, and if the thickness of the entire inner layer 13 is too thick, the rigidity of the inner layer 13 becomes too large and the inner bag 14 It becomes difficult to wither.
- the tensile elastic modulus of the entire inner layer 13 is preferably 750 MPa or less. In this case, the rigidity of the inner layer 13 is small, and the inner bag 14 is likely to be deflated.
- the tensile modulus of the entire inner layer 13 is preferably 725 MPa or less, and more preferably 700 MPa or less.
- the container body 3 having the configuration shown in FIG. 1 is manufactured by blow molding or the like, and the outside air introduction hole 15 is formed in the outer shell 12.
- the valve member 5 is attached to the outside air introduction hole 15.
- the cap 23 is manufactured by injection molding or the like.
- the cap 23 is attached to the mouth portion 9 as shown in FIGS. 14 (a) to 14 (b).
- the container body 3 and the cap 23 are covered with a cylindrical shrink film 31, and the shrink film 31 is contracted by heating the shrink film 31, so that the shrink film 31 is placed in the container body. 3 and the cap 23.
- the delamination container 1 is assumed to be used without removing the cap 23 in order to prevent intrusion of outside air into the inner bag 14, but a consumer unfamiliar with the delamination container 1 tries to remove the cap 23. There is a case. Therefore, in this embodiment, it is difficult to remove the cap 23 by attaching the shrink film 31 so as to be in close contact with both the container body 3 and the cap 23.
- a ventilation hole is provided in the shrink film 31 so that the outside air is easily introduced into the outside air introduction hole 15.
- the shape, arrangement, size, number, etc. of the ventilation holes are not limited as long as the outside air can be introduced into the outside air introduction hole 15.
- the vent hole is constituted by a pinhole 32 as shown in FIG.
- the air hole is constituted by a large number of pores (so-called perforations) 33 provided along the circumferential direction of the cylindrical shrink film 31 as shown in FIG.
- the vent hole is constituted by a large number of pores (so-called perforations) 34 provided along the axial direction of the shrink film 31 as shown in FIG.
- the shrink film 31 can be easily detached from the container main body 3 by tearing the shrink film 31 along the perforation 34 and forming the cylindrical shrink film 31 into a sheet shape.
- the shrink film 31 may be provided with both perforations 33 and perforations 34.
- the shrink film 31 is provided so as to cover a part of the container body 3 and a part of the cap 23, but may be provided so as to cover the container body 3 and / or the entire cap 23. Moreover, you may provide so that only the accommodating part 7 of the container main body 3 may be covered, without covering the cap 23.
- FIG. -In the said embodiment although the valve member 5 is mounted
- the outside air introduction hole 15 is provided in the valve member attachment recess 7a.
- the valve member attachment recess 7a is not essential, and the outside air introduction hole 15 may be provided in a region that is not recessed.
- Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. This embodiment is similar to the first embodiment, and is mainly different in that the shape of the groove-like rib 7c is different. Hereinafter, the difference will be mainly described.
- the groove-like rib 7c is provided so as to surround the outside air introduction hole 15 in an arc shape (preferably in an arc shape).
- the groove-like rib 7c includes an inner arc portion 7i and an outer arc portion 7j.
- the arc portions 7i and 7j are arranged away from each other in a direction away from the outside air introduction hole 15 (that is, in a radial direction centering on the outside air introduction hole 15).
- the inner arc portion 7i is disposed at a position closer to the outside air introduction hole 15 than the outer arc portion 7j.
- the arc portions 7i and 7j are arranged substantially concentrically, and the center of a circle passing through each of the arc portions 7i and 7j substantially coincides with the center of the outside air introduction hole.
- the inner bag 14 can be formed with a folded portion 14a at the respective edges of the arc portions 7i and 7j.
- the folded portions 14a can be formed at a plurality of locations, and the force in the direction in which the inner bag 14 swells at each folded portion 14a is reduced.
- the groove-like rib 7c only needs to have at least one arc portion, and one of the arc portions 7i and 7j can be omitted.
- each of the arc portions 7i and 7j includes a plurality of groove portions 7i1 to 7i3 and 7j1 to 7j3 that are spaced apart from each other in the circumferential direction of the arc portions 7i and 7j on the left and right sides of the surface ⁇ .
- the arc portions 7i and 7j may be configured to have one groove portion on each of the left and right sides of the surface ⁇ , but the arc portions 7i and 7j may be configured by a plurality of groove portions 7i1 to 7i3 and 7j1 to 7j3, respectively. Therefore, there is an advantage that the folded portion 14a of the inner bag 14 is stably formed.
- FIG. 11 (a) and 11 (b) show that after the container body 3 is molded, the inner bag 14 is peeled off from the outer shell 12 before the contents are accommodated in the accommodating portion 7, and then the inside of the accommodating portion 7 is obtained. Shows the state after filling the contents.
- FIG. 11 (a) shows a state after preliminary peeling and filling of the contents so that a bent portion 14a is formed in the inner arc portion 7i
- FIG. 11 (b) shows a bent state in the outer arc portion 7j.
- the state after performing preliminary peeling and filling of the content part so that the part 14a is formed is shown.
- 11A and 11B the inner bag 14 is not in contact with the valve member 5.
- the inner bag 14 does not press the valve member 5 against the outer shell 12 to close the outside air introduction hole 15, and the outside air is quickly introduced into the intermediate space 21 through the outside air introduction hole 15 after the contents are discharged.
- the outer shell 12 is smoothly restored to the original shape.
- FIG. Even in this case, since the force in the direction in which the inner bag 14 swells toward the outside of the container is reduced, the effect of improving the recoverability of the outer shell 12 is achieved.
- the accommodating portion 7 is provided with a valve member mounting recess 7a having an inclined plane, and the outside air introduction hole 15 is provided in the recess 7a.
- An air circulation groove 7b extending from the recess 7a toward the mouth 9 is provided so that the recess 7a is not sealed with the shrink film.
- the angle ⁇ between the bottom surface of the recess 7a and the bottom surface of the groove 7b is less than 150 degrees (preferably less than 145 degrees)
- the bottom surface of the recess 7a and the bottom surface of the groove 7b In some cases, a folded portion is formed in the inner bag 14 at the connecting portion X between them, and the inner bag 14 may be difficult to separate from the outer shell 12 in the groove 7b.
- the bottom surface of the recess 7a and the groove 7b are formed by forming the first and second portions 7b1 and 7b2 in which the bottom surface of the groove 7b is bent at the bent portion Y.
- the angle [theta] between the bottom surfaces is set to 150 [deg.] Or more (preferably 155 [deg.] Or more).
- the angle ⁇ between the first and second portions 7b1 and 7b2 is also set to 150 ° or more (preferably 155 ° or more). According to such a configuration, a bent portion is not formed in the inner bag 14 at the connecting portion X and the bent portion Y, and there is an advantage that the inner bag 14 is quickly separated from the outer shell 12 in the groove 7b.
- FIGS. 11A to 11B the inner bag 14 is not peeled from the outer shell 12 in the outer arc portion 7j.
- FIG. 4 preliminary peeling is performed so that the inner bag 14 is peeled from the outer shell 12 in both the inner arc portion 7i and the outer arc portion 7j.
- This preliminary peeling can be performed, for example, by inserting a rod through the outside air introduction hole 15 and pushing the inner bag 14 with the rod.
- FIG. 13A shows a state after preliminary peeling.
- the convex portions 7ia and 7ja are provided on the inner surface of the outer shell 12, and the concave portions 7ib and 7jb are provided on the outer surface of the inner bag 14. ing.
- the convex portion 7ia and the concave portion 7ib have a complementary shape, and the convex portion 7ja and the concave portion 7jb have a complementary shape, but when the inner bag 14 is peeled off from the outer shell 12, a crease can be naturally formed in the inner bag 14.
- a substantially straight pinch-off portion (bottom seal protrusion 27) is formed on the bottom 29 of the container body 3, and at a side wall portion position intersecting with an extension line of one end of the pinch-off portion,
- the main difference is that one adhesive band 101 that is continuous in the height direction of the side wall is formed.
- the difference will be mainly described.
- the container body 3 of the present embodiment is different in shape from the first to third embodiments, and the housing portion 7 includes a body portion 19 having a substantially constant cross-sectional shape in the longitudinal direction of the housing portion 7, and a body portion.
- the shoulder part 17 which connects between the part 19 and the opening part 9 is provided.
- the sealing portion of the laminated parison is formed in a straight line on the bottom surface 29 of the housing portion 7, and as a result, the inner layer 13 (inner bag 14) is fixed in a straight line on the bottom surface 29. This is important in combination with the adhesive band 101 when the contents are used up to the end.
- the outer layer 11 (outer shell 12) and the inner layer 13 (inner bag 14) are formed of materials that can be peeled from each other, so that the inner layer 13 (inner bag 14) can be easily peeled from the outer layer 11 (outer shell 12).
- the delamination container 1 of this embodiment as shown in FIGS. 16 and 17, only one adhesive band 101 is formed on the side wall, and in this portion, the outer layer 11 (outer shell) The inner layer 13 (inner bag 14) is not peeled off from 12).
- the adhesive band 101 is formed of a material capable of bonding the outer layer 11 (outer shell 12) and the inner layer 13 (inner bag 14), and is formed of, for example, adhesive polyolefin or various adhesives. Alternatively, it may be formed by heat welding or the like.
- the width of the adhesive band 101 is arbitrary, but is usually set to about several mm.
- the formation position of the adhesive band 101 is a position where an extension line of one end of the pinch-off portion on the bottom surface and the side wall intersect, and the adhesive band 101 is formed from the bottom surface to the mouth so that the extension line rises along the side wall. It is formed over the entire height.
- the laminated peeling container 1 filled with the contents is tilted and the side surface of the outer shell 12 is held and compressed to discharge the contents.
- the delamination container 1 is tilted so that the adhesive band 101 is positioned below. Therefore, the cap 23 is assembled to the mouth so that the position of the hinge portion h is approximately 180 ° opposite to the position where the adhesive band 101 is formed.
- the outside air introduction hole 15 and the valve member 5 are 180 ° opposite to the adhesive band 101 in the circumferential direction of the container body. [In the embodiment shown in FIGS. 16 to 17, the position rotated by 90 ° C. (position in the perpendicular direction)].
- the outside air is introduced from the outside air introduction hole 15.
- the inner bag fixed at the pinch portion. The air introduced into the both side spaces of the space 14 is distributed, which is a suitable position for causing the inner bag 14 to contract smoothly. The same can be said when the outside air introduction hole 15 is provided in the mouth portion 9.
- the cap 23 incorporates a check valve (not shown) and can discharge the contents in the inner bag 14, but cannot take outside air into the inner bag 14. Therefore, when the compressive force applied to the outer shell 12 after discharging the contents is removed, the outer shell 12 tries to return to its original shape by its own restoring force, but the inner bag 14 remains deflated and only the outer shell 12 remains. Will expand. Then, as shown in FIGS. 18D and 19B, the inside of the intermediate space 21 between the inner bag 14 and the outer shell 12 is in a depressurized state, and is intermediated through the outside air introduction hole 15 formed in the outer shell 12. Outside air is introduced into the space 21.
- the lid 5c When the intermediate space 21 is in a reduced pressure state, the lid 5c is not pressed against the outside air introduction hole 15, and thus does not hinder the introduction of outside air.
- the locking portion 5b is provided with airway securing means such as protrusions and grooves so that the locking portion 5b does not hinder the introduction of outside air even when the locking portion 5b is in contact with the outer shell 12.
- the inner bag 14 is fixed in a straight line at the pinch portion on the bottom surface. And the inner bag 14 is linearly fixed to the side wall by the adhesive band 101, thereby forming a space 102 having a substantially triangular cross section along the adhesive band 101 as shown in FIG. Will be.
- the space 102 is secured as a flow path for the remaining contents at the lower position of the delamination container 1, and the content passes through the flow path to the end. It is discharged to the outside promptly and smoothly. As a result, the contents can be used up to the end.
- the outer layer is a polypropylene layer (thickness 500 ⁇ m)
- the inner layer is an EVOH layer (thickness 30 ⁇ m, manufactured by Nippon Synthetic Chemical Industry: Soarnol SF7503B) and adhesive layer (thickness 30 ⁇ m, manufactured by Mitsubishi Chemical: Modic L522) in this order from the outer surface side of the container.
- a low-density polyethylene layer (thickness 40 ⁇ m, flexural modulus 340 MPa, manufactured by Asahi Kasei Chemicals Corporation: Suntec F2206), and a laminated peeling container having an internal volume of 200 mL was manufactured by blow molding. The thickness of each layer was measured at the thinnest part in the delamination container.
- Comparative Example 2 A laminated peeling container was produced in the same manner as in Comparative Example 1 except that the thickness of the EVOH layer was changed to 60 ⁇ m.
- Comparative Example 3 A laminated peeling container was produced in the same manner as in Comparative Example 1 except that the thickness of the low density polyethylene layer was 80 ⁇ m.
- Example 1 A laminated release container was produced in the same manner as in Comparative Example 1 except that the low density polyethylene layer was 80 ⁇ m thick and low density polyethylene (Nippon Polyethylene Co., Ltd. Novatec LD YF30) having a flexural modulus of 130 MPa was used.
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Abstract
Description
このような積層剥離容器として、内層にEVOH層が設けられているものがある。このような層構成の採用により、EVOH層が優れた酸素バリア性が有しているので、酸素バリア性に優れた積層剥離容器が得られる。
特許文献2では、内容物を吐出した後に外殻と内袋の間に外気がスムーズに導入されないという課題を解決するために、口部に設けた外気導入孔から下方に中心角90度で広がる領域に縦リブを設けている。
特許文献2の技術は外気導入孔が容器の口部に形成されていることを前提としているものであり、容器の収容部に外気導入孔を設けるタイプの積層剥離容器には適用が困難である。
本発明者が、特許文献3のような積層剥離容器の外周にシュリンクフィルムを装着したところ、内容物の吐出後に外殻がスムーズに元の形状に復元されない場合があることが分かった。
ところで、積層剥離容器の場合、内袋が外殻から剥離して収縮することで、例えば液状の内容物が注ぎ出されるものであるため、内袋の収縮形態によっては液溜まりのような部位が発生してしまい、内袋内の内容物を全て使い切ることが難しいという課題がある。このような現象を改善するために、外殻と内袋を帯状に接着する接着帯を複数本設ける等の工夫も検討されているが、未だ最適化には至っていない。
本発明の第1観点によれば、外殻と内袋とを有し且つ内容物の減少に伴って前記内袋が収縮する容器本体を備える積層剥離容器であって、前記内袋を構成する内層は、容器外面側から順に、外側層、接着層、及び内側層を備え、前記外側層は、EVOH層を含み、前記内側層の厚さが60~200μmであり且つ曲げ弾性率が250MPa以下であり、(前記内側層の厚さ/前記EVOH層の厚さ)の値が1.1~5であり、前記内層全体の厚さが100~250μmである、積層剥離容器が提供される。
このような知見に基づいて、酸素バリア性の低下の問題を解決するために、最初は、従来よりもEVOH層を厚くしてみた。しかし、EVOH層は剛性が高いので、EVOH層を厚くすると内層の剛性が増大して内袋が収縮しにくくなるという問題が生じることが分かった。
次に、内容物に含まれる水分がEVOH層に到達しにくくするように、低密度ポリエチレン又は直鎖状低密度ポリエチレンなどで構成される内側層を厚くしてみた。しかし、この場合でも、内層の剛性が増大して内袋が収縮しにくくなるという問題が生じた。
このような状況において、本発明者は、内側層の厚さ、内側層の曲げ弾性率、内側層とEVOH層の厚さの比、及び内層全体の厚さの全てを特定の数値範囲内にした場合には、内袋の収縮性の悪化を抑制しつつ酸素バリア性の低下を効果的に抑制することができることを見出し、本発明の第1観点の完成に到った。
なお、本願明細書において、各層の厚さは、容器本体中の、肉厚が最も薄い箇所での厚さを意味する。
好ましくは、前記内側層は、低密度ポリエチレン又は直鎖状低密度ポリエチレンからなる。
好ましくは、前記内側層は、70~150μmであり且つ曲げ弾性率が200MPa以下であり、(前記内側層の厚さ/前記EVOH層の厚さ)の値が1.5~4であり、前記内層全体の厚さが120~200μmである。
本発明の第2観点によれば、内容物を収容する収容部と、前記収容部から前記内容物を吐出する口部とを備え、且つ外殻と内袋とを有し且つ内容物の減少に伴って前記内袋が前記外殻から剥離し収縮する容器本体を備え、前記外殻は、前記外殻と前記内袋の間の中間空間と前記容器本体の外部空間を連通する外気導入孔を前記収容部に備え、前記外気導入孔を挟むように溝状リブが設けられる、積層剥離容器が提供される。
好ましくは、前記溝状リブは、前記外気導入孔を周方向の両側から挟むように設けられる。
好ましくは、前記溝状リブは、前記口部に向かって前記外気導入孔から周方向に離れるように傾斜して延びるように設けられる第1及び第2溝状リブを備える。
好ましくは、第1及び第2溝状リブは、正面図上での角度が30~100度になるように設けられる。
好ましくは、第1及び第2溝状リブは、正面図上で、その延長線の交点と前記外気導入孔の中心の間の距離が5~35mmの位置になるように設けられる。
好ましくは、前記外気導入孔と前記溝状リブは、略同一平面上に設けられる。
好ましくは、前記溝状リブは、前記外気導入孔を弧状に囲むように延びる。
好ましくは、前記溝状リブは、前記溝状リブの周方向に互いに離間された複数の溝部で構成される。
好ましくは、前記溝状リブは、前記外気導入孔から離れる方向に互いに離間されて設けられた複数の弧部を備える。
好ましくは、前記外気導入孔は、前記収容部に設けられた弁部材取付凹部に形成され、前記溝状リブは、前記弁部材取付凹部を挟むように設けられる。
好ましくは、前記溝状リブは、断面が半円形状である。
本発明の第3観点によれば、容器本体と、キャップと、筒状のシュリンクフィルムを備える積層剥離容器であって、前記容器本体は、内容物を収容する収容部と、前記収容部から前記内容物を吐出する口部とを備え、且つ前記収容部及び前記口部が外層と内層とを備え、内容物の減少に伴って前記内層によって構成される内袋が収縮するように構成され、前記キャップは、前記口部に装着され、前記シュリンクフィルムは、前記収容部の外周に密着するように設けられ、前記外殻は、前記収容部に、前記外殻と前記内袋の間の中間空間と外部空間を連通する外気導入孔を備え、前記シュリンクフィルムは、前記外気導入孔を覆うように設けられ、且つ前記外気導入孔へ外気を導入する通気孔を有する、積層剥離容器が提供される。
好ましくは、前記通気孔は、前記容器本体に対する前記シュリンクフィルムの周方向の相対位置に関わらずに前記外気導入孔へ外気が導入されるように設けられる。
好ましくは、前記通気孔は、前記シュリンクフィルムの周方向に沿って設けられた多数の細孔で構成される。
好ましくは、前記通気孔は、前記シュリンクフィルムの軸方向に沿って設けられた多数の細孔で構成される。
好ましくは、前記外気導入孔は、前記収容部に設けられた凹部内に設けられ、前記シュリンクフィルムは、前記凹部を覆うように設けられる。
好ましくは、前記シュリンクフィルムは、前記収容部及び前記キャップの外周に密着するように設けられる。
本発明の第4観点によれば、外殻と内袋とを有し且つ内容物の減少に伴って前記内袋が収縮する容器本体と、前記外殻と前記内袋の間の中間空間と容器本体の外部空間との間の空気の出入りを調節する弁部材とを備える積層剥離容器であって、前記容器本体は、内容物を収容する収容部と、前記収容部から前記内容物を排出する口部とを備え、前記口部には蓋部が組み付けられ、前記容器本体の底部には、略直線状のピンチオフ部が形成され、前記ピンチオフ部の一方の端部の延長線と交差する側壁部位置において、側壁の高さ方向に連なる1本の接着帯が形成されていることを特徴とする積層剥離容器が提供される。
好ましくは、前記蓋部は、ヒンジ部の位置が前記接着帯の形成位置とは略180°反対側になるように口部に組み付けられる。
1.第1実施形態
図1~図4に示すように、本発明の第1実施形態の積層剥離容器1は、容器本体3と、弁部材5を備える。容器本体3は、内容物を収容する収容部7と、収容部7から内容物を吐出する口部9を備える。
尚、容器が過度に硬いと、容器の使用感が悪くなるため、ランダム共重合体に、例えば、直鎖状低密度ポリエチレンなどの柔軟材料を混合して外層11を構成してもよい。ただし、ランダム共重合体に対して混合する材料は、ランダム共重合体の有効な特性を大きく阻害することのなきよう、混合物全体に対して50重量%未満となるように混合することが好ましい。例えば、ランダム共重合体と直鎖状低密度ポリエチレンとを85:15の重量割合で混合した材料により外層11を構成することができる。
まず、ブロー成形などによって図1に示す構成の容器本体3を製造し、外殻12に外気導入孔15を形成する。次に、外気導入孔15に弁部材5を装着する。次に、射出成形などによってキャップ23を製造する。次に、容器本体3の内袋14内に内容物を充填した後、図14(a)~(b)に示すように、キャップ23を口部9に装着する。
・上記実施形態では、シュリンクフィルム31は、容器本体3の一部とキャップ23の一部を覆うように設けているが、容器本体3及び/又はキャップ23の全体を覆うように設けてもよい。また、キャップ23を覆わずに、容器本体3の収容部7のみを覆うように設けてもよい。
・上記実施形態では、外気導入孔15に弁部材5を装着しているが、弁部材5は必須ではなく、弁部材5がない場合には、内容物の吐出時に外気導入孔15又はシュリンクフィルム31の通気孔を指で塞ぐことによって中間空間21内の圧力を高めることができる。
・上記実施形態では、弁部材取付凹部7a内に外気導入孔15を設けているが、弁部材取付凹部7aは必須ではなく凹んでいない領域に外気導入孔15を設けてもよい。上記実施形態のように弁部材5全体が移動することによって外気導入孔15が開閉される場合が弁部材5とシュリンクフィルムの干渉を避けるために弁部材取付凹部7aを設けることが好ましいが、弁部材5を装着しない場合や弁機能を内蔵した弁部材5を用いる場合には弁部材取付凹部7aが無くても機能的に支障がない。
図10~図12を用いて、本発明の第2実施形態について説明する。本実施形態は、第1実施形態に類似しており、溝状リブ7cの形状が異なっている点が主な相違点である。以下、相違点を中心に説明する。
図13を用いて、本発明の第3実施形態について説明する。本実施形態は、第3実施形態に類似しており、内袋14の予備剥離の方法が異なっている点が主な相違点である。以下、相違点を中心に説明する。
4.第4実施形態
図16~図19を用いて、本発明の第4実施形態について説明する。本実施形態は、容器本体3の底部29には、略直線状のピンチオフ部(底シール突出部27)が形成され、前記ピンチオフ部の一方の端部の延長線と交差する側壁部位置において、側壁の高さ方向に連なる1本の接着帯101が形成されている点が主な相違点である。以下、相違点を中心に説明する。
(比較例1)
外層がポリプロピレン層(厚さ500μm)からなり、内層が容器外面側から順にEVOH層(厚さ30μm、日本合成化学工業製:ソアノールSF7503B)、接着層(厚さ30μm、三菱化学製:モディックL522)、及び低密度ポリエチレン層(厚さ40μm、曲げ弾性率340MPa、旭化成ケミカルズ社製:サンテックF2206)からなり、内容量が200mLである積層剥離容器をブロー成形によって製造した。なお、各層の厚さは、積層剥離容器中の、最も肉厚が薄い箇所で測定した。
EVOH層の厚さを60μmにした以外は比較例1と同様の方法で積層剥離容器を製造した。
低密度ポリエチレン層の厚さを80μmにした以外は比較例1と同様の方法で積層剥離容器を製造した。
低密度ポリエチレン層の厚さを80μmにし且つ曲げ弾性率が130MPaの低密度ポリエチレン(日本ポリエチレン株式会社ノバテックLD YF30)を使用した以外は比較例1と同様の方法で積層剥離容器を製造した。
102:空間
Claims (22)
- 外殻と内袋とを有し且つ内容物の減少に伴って前記内袋が収縮する容器本体を備える積層剥離容器であって、
前記内袋を構成する内層は、容器外面側から順に、外側層、接着層、及び内側層を備え、
前記外側層は、EVOH層を含み、
前記内側層の厚さが60~200μmであり且つ曲げ弾性率が250MPa以下であり、
(前記内側層の厚さ/前記EVOH層の厚さ)の値が1.1~5であり、
前記内層全体の厚さが100~250μmである、積層剥離容器。 - 前記内側層は、低密度ポリエチレン又は直鎖状低密度ポリエチレンからなる、請求項1に記載の積層剥離容器。
- 前記内側層は、70~150μmであり且つ曲げ弾性率が200MPa以下であり、
(前記内側層の厚さ/前記EVOH層の厚さ)の値が1.5~4であり、
前記内層全体の厚さが120~200μmである、請求項1又は請求項2に記載の積層剥離容器。 - 内容物を収容する収容部と、前記収容部から前記内容物を吐出する口部とを備え、且つ外殻と内袋とを有し且つ内容物の減少に伴って前記内袋が収縮する容器本体を備え、
前記外殻は、前記外殻と前記内袋の間の中間空間と前記容器本体の外部空間を連通する外気導入孔を前記収容部に備え、
前記外気導入孔を挟むように溝状リブが設けられる、積層剥離容器。 - 前記溝状リブは、前記外気導入孔を周方向の両側から挟むように設けられる、請求項4に記載の積層剥離容器。
- 前記溝状リブは、前記口部に向かって前記外気導入孔から周方向に離れるように傾斜して延びるように設けられる第1及び第2溝状リブを備える、請求項5に記載の積層剥離容器。
- 第1及び第2溝状リブは、正面図上での角度が30~100度になるように設けられる、請求項6に記載の積層剥離容器。
- 第1及び第2溝状リブは、正面図上で、その延長線の交点と前記外気導入孔の中心の間の距離が5~35mmの位置になるように設けられる、請求項6又は請求項7に記載の積層剥離容器。
- 前記外気導入孔と前記溝状リブは、略同一平面上に設けられる、請求項4~請求項8の何れか1つに記載の積層剥離容器。
- 前記溝状リブは、前記外気導入孔を弧状に囲むように延びる、請求項4に記載の積層剥離容器。
- 前記溝状リブは、前記溝状リブの周方向に互いに離間された複数の溝部で構成される、請求項10に記載の積層剥離容器。
- 前記溝状リブは、前記外気導入孔から離れる方向に互いに離間されて設けられた複数の弧部を備える、請求項10又は請求項11に記載の積層剥離容器。
- 前記外気導入孔は、前記収容部に設けられた弁部材取付凹部に形成され、前記溝状リブは、前記弁部材取付凹部を挟むように設けられる、請求項4~請求項12の何れか1つに記載の積層剥離容器。
- 前記溝状リブは、断面が半円形状である、請求項4~請求項13の何れか1つに記載の積層剥離容器。
- 容器本体と、キャップと、筒状のシュリンクフィルムを備える積層剥離容器であって、
前記容器本体は、内容物を収容する収容部と、前記収容部から前記内容物を吐出する口部とを備え、且つ前記収容部及び前記口部が外層と内層とを備え、内容物の減少に伴って前記内層によって構成される内袋が収縮するように構成され、
前記キャップは、前記口部に装着され、
前記シュリンクフィルムは、前記収容部の外周に密着するように設けられ、
前記外殻は、前記収容部に、前記外殻と前記内袋の間の中間空間と外部空間を連通する外気導入孔を備え、
前記シュリンクフィルムは、前記外気導入孔を覆うように設けられ、且つ前記外気導入孔へ外気を導入する通気孔を有する、積層剥離容器。 - 前記通気孔は、前記容器本体に対する前記シュリンクフィルムの周方向の相対位置に関わらずに前記外気導入孔へ外気が導入されるように設けられる、請求項15に記載の積層剥離容器。
- 前記通気孔は、前記シュリンクフィルムの周方向に沿って設けられた多数の細孔で構成される、請求項15又は請求項16に記載の積層剥離容器。
- 前記通気孔は、前記シュリンクフィルムの軸方向に沿って設けられた多数の細孔で構成される、請求項15~請求項17の何れか1つに記載の積層剥離容器。
- 前記外気導入孔は、前記収容部に設けられた凹部内に設けられ、前記シュリンクフィルムは、前記凹部を覆うように設けられる、請求項15~請求項18の何れか1つに記載の積層剥離容器。
- 前記シュリンクフィルムは、前記収容部及び前記キャップの外周に密着するように設けられる、請求項15~請求項19の何れか1つに記載の積層剥離容器。
- 外殻と内袋とを有し且つ内容物の減少に伴って前記内袋が収縮する容器本体と、前記外殻と前記内袋の間の中間空間と容器本体の外部空間との間の空気の出入りを調節する弁部材とを備える積層剥離容器であって、
前記容器本体は、内容物を収容する収容部と、前記収容部から前記内容物を排出する口部とを備え、
前記口部には蓋部が組み付けられ、
前記容器本体の底部には、略直線状のピンチオフ部が形成され、
前記ピンチオフ部の一方の端部の延長線と交差する側壁部位置において、側壁の高さ方向に連なる1本の接着帯が形成されていることを特徴とする積層剥離容器。 - 前記蓋部は、ヒンジ部の位置が前記接着帯の形成位置とは略180°反対側になるように口部に組み付けられることを特徴とする請求項21記載の積層剥離容器。
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EP16740275.9A EP3248895B1 (en) | 2015-01-23 | 2016-01-22 | Delamination container |
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