WO2013031494A1 - 積層ブロー成形容器及び吸気孔の形成方法 - Google Patents
積層ブロー成形容器及び吸気孔の形成方法 Download PDFInfo
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- WO2013031494A1 WO2013031494A1 PCT/JP2012/070140 JP2012070140W WO2013031494A1 WO 2013031494 A1 WO2013031494 A1 WO 2013031494A1 JP 2012070140 W JP2012070140 W JP 2012070140W WO 2013031494 A1 WO2013031494 A1 WO 2013031494A1
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- WIPO (PCT)
- Prior art keywords
- outer layer
- cylindrical blade
- blade
- intake hole
- forming
- 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
- 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
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
-
- 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
-
- 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
-
- 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
-
- 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
- B65D77/22—Details
- B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F2210/00—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products
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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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0009—Cutting out
- B29C2793/0018—Cutting out for making a hole
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3086—Interaction between two or more components, e.g. type of or lack of bonding
- B29C2949/3094—Interaction between two or more components, e.g. type of or lack of bonding preform having at least partially loose components, e.g. at least partially loose layers
-
- 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
- B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/001—Layered products the layers being loose
Definitions
- the present invention comprises an outer layer made of a synthetic resin that forms a fixed outer shell, and an inner layer that is detachably laminated on the outer layer to form an inner bag, and an outer air is formed between the outer layer and the inner layer in the mouth tube portion.
- the present invention relates to a laminated blow-molded container in which air intake holes for introducing air holes are perforated, and a method for forming the air intake holes.
- Delami bottle is known as a laminated blow-molded container comprising an outer layer made of a synthetic resin that forms a fixed outer shell and an inner layer that is peelably laminated on the outer layer to form an inner bag. Describes an invention relating to a method and apparatus for perforating and forming an outside air introduction hole in the outer layer portion of the mouth tube portion.
- FIG. 9 corresponds to FIG. 2 of Patent Document 1 and is an explanatory view schematically showing a method of forming the intake holes, and shows a state in which the punching device 30 is disposed in the laminated blow-molded container 1.
- the container 1 has a mouth tube part 2, a shoulder part 3, and a body part 4, and is a delami bottle in which an outer layer 11 and an inner layer 12 are laminated.
- the punching device 30 is mainly composed of a cutter member 40 which is hatched with a receiving member 31 and shown in a longitudinal section.
- the receiving member 31 includes a support bar 34 that hangs downward from the support member 32, and a cutter base 36 disposed at the tip of the support bar 34.
- the cutter member 40 includes a slide member 41 supported by a support shaft 33 disposed horizontally on the support member 32 so as to be slidable to the left and right, a support bar 42 depending on the slide member 41, and A punch cutter 43 is provided at the tip of the support bar 42 so as to face the cutter cradle 36 of the receiving member 31.
- the punch cutter 43 has a cylindrical blade 44 at the tip, and a through hole 46 for leading the cutout piece 11a is provided therein. Then, the punch cutter 43 moves the sliding member 41 to the left (X direction) in the drawing along the support shaft 33 by driving means (not shown) until the tip of the bolt 37 hits the support bar 34. Move At that time, the cylindrical blade 44 first presses the inner layer 12 of the mouth tube portion 2 of the container 1 against the receiving surface 36a of the cutter cradle 36, and then press-fitted into the outer layer 11 of the mouth tube portion 2 of the container 1 to The outer layer 11 is cut out, and an air intake hole for introducing air is formed between the inner layer 12 and the outer layer 11.
- an intake hole is formed only in the outer layer 11. Can do.
- FIG. 10 is a longitudinal sectional view showing a laminated state of the outer layer 11 and the inner layer 12 in the vicinity of the intake hole 14 drilled by the above method.
- the outer layer 11 and the inner layer 12 can be peeled off, but are often laminated in close contact.
- the outside air is naturally smoothly passed between the outer layer 11 and the inner layer 12 through the intake hole 14 due to the reduced pressure inside the bottle when the content liquid is poured out.
- the inside of the bottle is forcibly depressurized with a vacuum pump or the like through the mouth tube portion 2, and the outer layer 11 and the inner layer 12 are placed in the bottle. It is often used as a state in which the outer layer 11 and the inner layer 12 are laminated again after being peeled over the entire region to make the contact between the outer layer 11 and the inner layer 12 once eliminated, and then air is blown from the mouth tube portion. .
- the thickness of the parison often varies, but according to the method of forming the air intake holes described in Patent Document 1, the gap t shown in FIG. If it is, the introduction hole can be drilled only in the outer layer 11 even if there is a variation in thickness, Theoretically, the outer layer 11 is completely cut out by bringing the cutting edge of the punch cutter into contact with the outer peripheral surface of the inner layer 11. There is a risk of becoming. Further, there is a problem that it is difficult to remove the waste residue generated by the punching of the outer layer 11 with a punch cutter, and that this residue remains and the intake hole is difficult to open.
- the adhesion between the outer layer 11 and the inner layer 12 is eliminated once and used as a layered state again.
- the inner layer 12 in the mouth tube portion 2 has high rigidity due to its large thickness, and has a large elastic return force after peeling, and partially returns to the close contact state after peeling, and the inner layer 12 from the outer layer 11 is restored. There remains a risk that peeling will not proceed smoothly and reliably.
- an object of the present invention is to eliminate the above-described problems in the related art relating to the delami bottle, and firstly, to create a method for forming an air intake hole without leaving a blade mark due to the cutting edge of the punch cutter in the inner layer. Second, it is to create a shape of the air intake hole that can smoothly and reliably proceed with the separation of the outer layer and the inner layer in the vicinity of the opening peripheral edge of the air intake hole.
- the present invention relates to a delamination bottle type laminated blow-molded container and a method for forming an intake hole.
- a method for forming an intake hole in the laminated container will be described first, and then a laminated blow-molded container will be described.
- the main configuration relating to the method of forming the intake hole is: It consists of an outer layer made of synthetic resin that forms a regular outer shell and an inner layer made of synthetic resin that is peelably laminated on the outer layer, and is a method in which an air intake hole is formed in the outer layer by a punch cutter at a predetermined position of the mouth tube portion.
- the punch cutter has a cylindrical blade at the tip, and an inner peripheral surface of this cylindrical blade is provided with a locking portion that exerts a function to prevent the cylindrical blade from coming off from the outer layer when retracted from the outer layer.
- the cylindrical blade is press-fitted and advanced until the cutting edge is in the closest position to the inner surface of the outer layer, and the outer layer is not completely cut out, leaving an uncut portion at the tip in a circumferential shape,
- the cut-out piece that remains in the cylindrical blade and leaves the non-cut-out portion is retreated, and this retraction causes the uncut-out portion to be removed.
- the air intake hole is drilled as it is broken and the cutout piece is completely cut out. It is said.
- the cutting edge of the cylindrical blade disposed at the tip of the punch cutter stays inside the outer layer and does not directly contact the inner layer.
- the air intake hole can be formed without leaving a blade mark due to the blade edge of the cutter in the inner layer.
- the function of preventing the locking portion from coming off causes the cutout piece to be cut out while leaving the uncutout portion remaining in the cylindrical blade, and the cutout piece is completely cut out by breaking the uncutout portion by this retreat. In this state, the cut-out piece can be completely removed from the intake hole, and the problem that the cut residue remains and the intake hole is difficult to open is completely eliminated. be able to.
- Another configuration relating to the method of forming the intake hole is that, in the main configuration described above, a reduced diameter step portion is provided around the inner peripheral surface of the cylindrical blade of the punch cutter, and this reduced diameter step portion is used as a locking portion. Is.
- the forming method of the present invention uses a punch cutter in which a latching portion is provided on the inner peripheral surface of the cylindrical blade, and the cutout piece remaining in the cylindrical blade is utilized by utilizing the function of preventing the latching portion from coming off.
- the point of breaking the uncut part is characteristic, but the shape of the cylindrical blade including the locking part is the press-fitting advanceability to the outer layer of the cylindrical blade, the cutting ability of the outer layer, It can be determined appropriately in consideration of breakability and the like.
- the above configuration is one of the specific examples of the locking portion.
- the reduced diameter step portion sufficiently exhibits the function of preventing the removal, and the cutout piece remaining in the cylindrical blade is hooked by this reduced diameter step portion.
- the uncut portion can be easily broken.
- the shape of the reduced-diameter step portion includes how far the reduced-diameter step portion is arranged from the blade edge and how much the reduced-diameter portion is formed. This can be determined as appropriate in consideration of the rupture property and the breakability of the uncut portion due to the removal preventing function.
- Still another configuration relating to the method of forming the intake hole is a configuration in which the locking portion is a reduced diameter step portion, and the inner peripheral surface of the cylindrical blade is increased in diameter from the inner peripheral end of the reduced diameter step portion in a tapered shape. It is said that the structure reaches the cutting edge.
- Still another configuration relating to the method of forming the suction hole is that the diameter-reduced step portion is provided in an intermittent manner in the circumferential direction in the configuration in which the engagement portion is the diameter-reduced step portion.
- a reduced diameter step is provided around the inner peripheral surface of the cylindrical blade, there is a concern that the press-fitting advanceability of the cylindrical blade into the outer layer or the cutting ability of the outer layer may be reduced.
- the press-fitting advanceability to the outer layer or the cutting ability of the outer layer is reduced. It becomes possible to suppress.
- Still another configuration relating to the method of forming the air intake hole is the main configuration described above, in which a tapered diameter-reduced portion is formed on the inner peripheral surface of the cylindrical cutter of the punch cutter in a tapered shape toward the blade tip. It is said that the tapered reduced diameter portion is used as a locking portion.
- the above configuration is also a specific example of the locking portion, and by forming the locking portion as a tapered reduced diameter portion, a stepped portion is not formed.
- the cutting property of the outer layer can be maintained satisfactorily, and the function of preventing slippage can be exhibited on the tapered surface of the tapered reduced diameter portion.
- the laminated blow-molded container of the present invention can be realized by the above-described method for forming an air intake hole of the present invention.
- Blow molding that consists of a synthetic resin outer layer that forms a regular outer shell and a synthetic resin inner layer that is peelably laminated on the outer layer, and in which a suction cutter is drilled in the outer layer by a punch cutter at a predetermined position in the mouth tube In the container, It is said that the shape of the intake hole at the inner surface side end of the outer layer is a shape expanded in a trumpet shape.
- the inner layer In the vicinity of the air intake hole, the inner layer is laminated on the outer layer and covers the air intake hole in a bridging manner, but according to the above configuration, the air intake hole has a shape that is enlarged in a trumpet shape at the inner surface side end portion of the outer layer. Accordingly, a notch-like gap is formed between the outer layer and the inner layer at the opening peripheral edge of the intake hole. Then, starting from the notch-shaped gap, separation between the outer layer and the inner layer can be started and progressed smoothly, and the introduction of outside air between the outer layer and the inner layer can be introduced through the intake holes. It can be easily achieved.
- Another configuration related to the laminated blow-molded container is that, in the main configuration described above, irregularities due to burrs generated in a punching process by a punch cutter are formed at the opening peripheral edge of the intake hole at the inner surface side end of the outer layer. Is.
- the cut piece that has been cut out leaving the uncut portion remaining in the cylindrical blade is retracted, and the uncut portion is broken by this retraction to completely remove the cut piece.
- the shape of the air intake hole is expanded in a trumpet shape at the inner surface side end of the outer layer. It can be set as the diameter shape. Further, by forcibly breaking the uncut portion, burrs are generated at the opening peripheral edge portion of the intake hole along with the rupture, and irregularities can be formed by the burrs.
- the cutting edge of the cylindrical blade disposed at the tip of the punch cutter stays inside the outer layer and does not directly contact the inner layer.
- the air intake hole can be formed without leaving a blade mark due to the cutting edge of the punch cutter in the inner layer.
- the function of preventing the locking portion from coming off causes the cutout piece to be cut out while leaving the uncutout portion remaining in the cylindrical blade, and the cutout piece is completely cut out by breaking the uncutout portion by this retreat.
- the cutout piece can be completely removed from the intake hole as it is left in the cylindrical blade, and the problem that the cut residue remains and the intake hole is difficult to open can be completely solved.
- the intake hole has a trumpet-shaped shape at the inner surface side end portion of the outer layer, so that the outer peripheral portion of the intake hole is between the outer layer and the inner layer. Since a gap is formed in a notch shape, the separation between the outer layer and the inner layer can be started and progressed smoothly starting from this gap, and the introduction of the outside air between the outer layer and the inner layer can Can be easily achieved. Further, by forming irregularities due to burrs at the peripheral edge of the opening of the intake hole at the inner surface side end of the outer layer, it is possible to avoid close contact between the outer layer and the inner layer at the peripheral edge of the intake hole where the irregularity is formed.
- FIG. 2 is an enlarged view of the main part of the container shown in FIG. 1 in the vicinity of an intake hole, in which (a) is a longitudinal sectional view and (b) is a view seen from the direction of a thick arrow in (a). It is a schematic explanatory drawing of the formation method of an air intake hole of the present invention.
- FIG. 2 shows an example of a punch cutter used when forming the air intake hole in FIG. 1, (a) is a longitudinal sectional view, (b) is an enlarged view near the cylindrical blade, and (c) is a further portion near the blade edge. It is an enlarged view.
- FIG. 4 is a bottom view of the punch cutter of FIG. 4, (b) is an enlarged view of the cutting edge in (a).
- FIG. 4 is a schematic explanatory drawing of the formation process of an air intake hole.
- the other example of a punch cutter is shown, (a) is a longitudinal cross-sectional view, (b) is an enlarged view near the cylindrical blade.
- Still another example of a punch cutter is shown, (a) is a longitudinal sectional view, and (b) is an enlarged view in the vicinity of a cylindrical blade.
- FIG. 1 is a side view partially showing a pumping-out container using a laminated blow-molded container according to an embodiment of the present invention as a container body.
- a container 1 that is a delami bottle has a laminated wall structure of an outer layer 11 made of a synthetic resin that forms a fixed outer shell and an inner layer 12 made of a synthetic resin that is detachably laminated on the outer layer 11 to form an inner bag. .
- a thread is projected on the outer peripheral surface via a tapered tubular shoulder portion 3 whose diameter is reduced upward, and on the outer layer 11 portion below the thread, It has a configuration in which the mouth tube portion 2 in which the intake hole 14 is formed by punching with a punch cutter is continuously provided.
- the outer layer 11 is made of high density polyethylene (HDPE) resin
- the inner layer 12 is made of nylon resin.
- a pair of intake holes 14 are formed in the front and rear (a pair of left and right in FIG. 1).
- FIG. 1 shows a state in which the outer layer 11 and the inner layer 12 are separated in the vicinity of the intake hole 14 and a separation space S is formed.
- FIG. 2A and 2B are enlarged views of the vicinity of the intake hole 14 of the container of FIG. 1, wherein FIG. 2A is a longitudinal sectional view, and FIG. 2B is a view of the intake hole 14 viewed from the direction of the thick arrow in FIG. It is. 2 (a) and 2 (b), the intake hole 14 has a shape expanded in a trumpet shape at the inner surface side end of the outer layer 11, as indicated by a trumpet-shaped portion 14a. 2 (a) and 2 (b), the opening peripheral edge portion of the intake hole 14 at the inner surface side end portion of the outer layer 11 shown by cross-hatching is caused by burrs generated in a punching process using a punch cutter. Unevenness 11c is formed.
- the trumpet-shaped portion 14a and the concavo-convex portion 11c due to burrs can be formed by employing the method for forming an intake hole of the present invention described later.
- the shape of the trumpet-shaped portion 14a and the unevenness 11c can be adjusted by appropriately setting the shape and press-fitting position of the cylindrical blade 44 of the punch cutter 43 used in the method for forming an intake hole of the present invention described later.
- the trumpet-like portion 14a and the unevenness 11c can be substantially not formed.
- a notch-shaped gap N (see FIG. 2A) between the outer layer 11 and the inner layer 12 at the opening peripheral edge of the intake hole 14 of the outer layer 11. )) Is formed.
- the notch-shaped gap N serves as a starting point for the progress of peeling, and as shown by a two-dot chain line in FIG. 2A, the peeling between the outer layer 11 and the inner layer 12 to be laminated smoothly starts and progresses.
- the separation space S can be expanded, and the outside air A can be easily introduced between the outer layer 11 and the inner layer 12 through the intake holes 14.
- the close contact between the outer layer 11 and the inner layer 12 can be avoided at the peripheral edge of the opening.
- the separation of the outer layer 11 and the inner layer 12 can be progressed more smoothly.
- the outer layer 11 and the inner layer 12 are peeled off once, and the adhesion between the outer layer 11 and the inner layer 12 is eliminated and used again as a laminated state.
- the operability of dispensing the content liquid may be lowered in the dispensing container as shown in FIG.
- FIG. 3 is a schematic explanatory view of the method for forming the air intake holes according to the present invention.
- the overall structure of the drilling device used is similar to that shown in FIG. 9, and the support is provided with the cutter cradle 36 at the tip.
- a rod 34 is inserted and arranged in the mouth tube portion 2 of the container 1, and a punch cutter 43 is disposed so as to face the cutter cradle 36.
- the punching devices are also arranged symmetrically, and the pair of punch cutters 43 are disposed on the left and right. To implement.
- the outline of the formation method of the air intake hole of the present invention is as follows.
- the cylindrical blade 44 of the punch cutter 43 is press-fitted and advanced into the outer layer 11, the outer layer 11 is not completely cut out, and the uncut portion 11 b is left circumferentially at the tip, and then the punch cutter 43 is moved backward.
- the uncut portion 11b is broken by the function of preventing the locking portion 45, which will be described later, and the intake hole 14 is drilled and formed.
- the cutting edge of the cylindrical blade 44 disposed at the tip of the punch cutter 43 stays inside the outer layer 11 and does not directly contact the inner layer 12.
- the intake holes 14 can be formed without leaving the blade traces due to the cutting edge of the punch cutter in the inner layer 12 as in the conventional forming method.
- FIG. 4 and 5 show a punch cutter 43 used in this embodiment
- FIG. 4 (a) is a longitudinal sectional view
- FIG. 4 (b) is an enlarged view of the vicinity of the cylindrical blade 44
- FIG. 4 (c) is a cutting edge 44p.
- FIG. 5A is a bottom view
- FIG. 5B is an enlarged view of the cutting edge 44p in FIG. 5A.
- This punch cutter 43 has a cylindrical blade 44 at the tip, and four diameter-reduced stepped portions 45a, which are one embodiment of the locking portion 45, are provided in an intermittent manner on the inner peripheral surface of the cylindrical blade 44 (see FIG. 5 (b)).
- a tapered portion 45a1 is formed by tapering the region from the inner peripheral end of the reduced diameter step portion 45a to the cutting edge 44p, and this is in parallel with the intermittent arrangement of the reduced diameter step portion 45a as described above.
- the diameter of the cutting edge 44p of the punch cutter 43 is 4 mm, and the distance h between the formation position of the reduced diameter step portion 45a and the cutting edge 44p (see FIG. 4B) is 0.8 mm.
- FIG. 6A and 6B are schematic explanatory views of the formation process of the intake hole 14, wherein FIG. 6A is a state where the cylindrical blade 44 is positioned at the press-fitting advance limit, and FIG. 6B is an enlarged view of the vicinity of the blade edge 43p in FIG. (C) shows a state in which the cylindrical blade 44 is retracted from the press-fit advance limit.
- FIG. 6A the cylindrical blade 44 is positioned at the press-fit advance limit, and the blade tip 44 p is positioned immediately before the inner peripheral surface of the outer layer 11.
- the thickness of the lower portion of the mouth tube portion 2 that pierces the intake hole 14 is 2.5 mm, but the position of about 0.02 mm from the inner peripheral surface of the outer layer 11 is set as the press-fit advance limit,
- the cutout piece 11a remains in the cylindrical blade 44 with the uncutout portion 11b remaining circumferentially at the tip without being cut out completely.
- the uncut-out portion 11b has a direction indicated by Sf in FIG. 6B.
- a shear stress acts on this, and the cut-out portion 11b is broken by the shear stress, so that a trumpet-shaped portion 14a whose diameter is increased in a trumpet shape is formed at the end of the intake hole 14 as shown in FIG. .
- the synthetic resin HDPE resin in this embodiment
- Concavities and convexities 11c due to burrs are formed.
- the shape of the punch cutter 43 used for forming the intake hole 14, particularly the shape of the locking portion 45 is determined by considering the material of the synthetic resin used for the outer layer 11, the press-fitting advanceability of the cylindrical blade 44, and the outer layer 11. Although it can be determined in consideration of the balance of the cut-out property and the prevention function of the locking portion 45, 7 and 8 show two other examples.
- the example of FIG. 7 uses the reduced diameter step portion 45a as the locking portion 45 as in the punch cutter of FIG. 4, but the reduced diameter step portion 45a with respect to that of FIG.
- the degree of diameter reduction by the reduced diameter step portion 45a is reduced in consideration of the balance between the press-fitting advanceability and the escape prevention function, and the formation position of the reduced diameter step portion 45a It is characteristic that the distance h between the cutting edges 44p is as small as 0.4 mm.
- the inner peripheral surface of the cylindrical blade 44 is tapered toward the blade tip 44p to form a tapered diameter-reduced portion 45b, and the taper surface of the tapered diameter-reduced portion 45b is removed. It is intended to demonstrate the prevention function. Since there is no stepped portion, it is possible to exert a good press-fitting advanceability and a function of preventing slippage, particularly with a hard synthetic resin.
- the Delami bottle type laminated blow-molded container of the present invention includes a container body of a dispensing container with a comb body in which a comb body is fitted to a mouth tube part, and a squeeze, in addition to a container body of a dispensing container with a pump. It can also be used as a type of delamination container.
- the method for forming an air intake hole according to the present invention can form an air intake hole without leaving a blade mark due to the cutting edge of the punch cutter in the inner layer, and the laminated blow-molded container according to the present invention can open the air intake hole.
- the separation of the outer layer and the inner layer can be started and progressed smoothly and reliably in the vicinity of the peripheral edge, and it is expected to be used in a wide range of fields as a delamination container having excellent dispensing operability.
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Abstract
Description
容器1は口筒部2、肩部3、胴部4を有し、外層11と内層12を積層したデラミボトルである。
また、穿孔装置30は主として受け部材31とハッチングして縦断面で示されるカッター部材40から構成されている。
カッター部材40は、支持部材32に水平状に配設される支持軸33に左右に摺動可能に支持された摺動部材41と、この摺動部材41に下方に垂下する支持棒42と、この支持棒42の先端に受け部材31のカッター受け台36に対向するよう配設されたポンチカッター43とからなっている。
そして、駆動手段(図示省略)により、支持軸33に沿って摺動部材41を図中、左側(X方向)に移動することによりポンチカッター43は、ボルト37の先端が支持棒34に突き当たるまで移動するが、
その際、まず筒状刃44が容器1の口筒部2の内層12をカッター受け台36の受け面36aに押圧し、次いで容器1の口筒部2の外層11に圧入され、内層12を残して外層11を切抜き、内層12と外層11の間に大気を導入する吸気孔を穿孔する。
ここで、ポンチカッター43の筒状刃44の刃先とカッター受け面36aとの間隙tを、ボルト37を調整することにより内層12の厚さに調節すると、外層11のみに吸気孔を形成することができる。
このため、この種のデラミボトルを利用した注出容器製品では、内容液を注出した際におけるボトル内部の減圧により、吸気孔14を介して外層11と内層12の間に自然に外気をスムーズに導入することが困難な場合があり、多くの場合、吸気孔14を形成後、口筒部2を介してボトル内部を真空ポンプ等で強制的に減圧状態にして外層11と内層12をボトルの全領域に亘って剥離して外層11と内層12との密着を一端解消した状態とし、その後、口筒部から空気を吹き込んで、再び外層11と内層12を積層した状態として使用する場合が多い。
原理的には、ポンチカッターの刃先を内層11の外周面に当接させることにより、外層11を完全に切抜く方法であり、内層11に刃痕が残って薄くなり内層11の破れに繋がる要因となる恐れがある。
また、ポンチカッターによる外層11の穿孔加工により発生する抜きカスを取除くことが困難で、このカスが残って吸気孔が開口し難いと云う問題もある。
上記技術的課題を解決する本発明の内、吸気孔の形成方法に係る主たる構成は、
定形の外殻を形成する合成樹脂製の外層と、外層に剥離可能に積層する合成樹脂製の内層とから成り、口筒部の所定位置においてポンチカッターにより外層に吸気孔を形成する方法であって、
ポンチカッターは先端部に筒状刃を有し、この筒状刃の内周面に筒状刃の外層からの後退時に、外層からの抜け防止機能を発揮する係止部を配設したものを使用し、
筒状刃を刃先が外層の内表面の直近位置になるまで圧入前進させ、外層を完全に切抜くことなく先端に未切抜き部を周状に残存させた状態とし、
次に、筒状刃の後退に伴って係止部の抜け防止機能により、筒状刃内に残留する、未切抜き部を残して切抜かれた切抜き片を後退させ、この後退により未切抜き部を破断して切抜き片を完全に切抜かれた状態として吸気孔を穿孔する、
と云うものである。
また、係止部の抜け防止機能により、筒状刃内に残留する未切抜き部を残して切り抜かれた切抜き片を後退させ、この後退により未切抜き部を破断して切抜き片を完全に切抜かれた状態とし筒状刃内に残存させた状態とすることにより、切抜き片を吸気孔内から完全に取り除くことができ、切りカスが残って吸気孔が開口し難いと云う問題を完全に解消することができる。
上記構成は係止部の具体例の一つであり、縮径段部により抜け防止機能が十分に発揮され、筒状刃内に残留する切抜き片をこの縮径段部により引掛けるようにして未切抜き部を容易に破断することができる。
ここで、縮径段部を刃先からどの程度距離を置いて配置するか、縮径をどの程度にするかを含む、縮径段部の形状は上記した外層への圧入前進性、外層の切断性、抜け防止機能による未切抜き部の破断性等を考慮して適宜決めることができるものである。
定形の外殻を形成する合成樹脂製の外層と、この外層に剥離可能に積層する合成樹脂製の内層とから成り、口筒部の所定位置においてポンチカッターにより外層に吸気孔を穿孔したブロー成形容器において、
外層の内表面側端部における吸気孔の形状をラッパ状に拡径した形状とする、と云うものである。
そして、このノッチ状に形成された間隙を起点として、積層する外層と内層との剥離をスムーズに開始、進展させることができ、外層と内層の間への外気の導入を、吸気孔を介して容易に達成することが可能となる。
の内表面側端部における吸気孔の開口周縁部にポンチカッターによる穿孔工程で発生するバリによる凹凸が形成されている、と云うものである。
また、未切抜き部を強引に破断することにより、この破断に伴って吸気孔の開口周縁部にバリが発生しこのバリにより凹凸を形成することができる。
本発明の吸気孔の形成方法にあっては、ポンチカッターの先端部に配設される筒状刃の刃先は、外層内部に留まり内層に直接当接することがないので、従来の方法のようにポンチカッターの刃先による刃痕を内層に残すことなく吸気孔を形成することができる。
また、係止部の抜け防止機能により、筒状刃内に残留する未切抜き部を残して切り抜かれた切抜き片を後退させ、この後退により未切抜き部を破断して切抜き片を完全に切抜かれた状態とし筒状刃内に残存させた状態として切抜き片を吸気孔内から完全に取り除くことができ、切りカスが残って吸気孔が開口し難いと云う問題を完全に解消することができる。
さらに、外層の内表面側端部における吸気孔の開口周縁部にバリによる凹凸が形成されていることにより、当該凹凸が形成された吸気孔の開口周縁部では外層と内層の密着を回避することができ、前述したノッチ状の間隙の作用効果と相俟って、積層する外層と内層との剥離をよりスムーズ、また確実に開始、進展させることができ、外層と内層の間への外気の導入を、吸気孔を介して容易に達成することができる。
図1は、本発明の積層ブロー成形容器の一実施例を容器本体として利用したポンプ付き注出容器を部分的に縦断して示す側面図である。
デラミボトルである容器1は、定形の外殻を形成する合成樹脂製の外層11と、この外層11に剥離自在に積層し、内袋を形成する合成樹脂製の内層12との積層壁構造を有する。そして有底筒状の胴部4の上端に、上方に縮径したテーパー筒状の肩部3を介して、外周面に螺条を突設し、この螺条の下位の外層11部分に、ポンチカッターにより吸気孔14を穿孔、形成した口筒部2を連設した構成となっている。
なお、本実施例の容器1では外層11は高密度ポリエチレン(HDPE)樹脂製、内層12はナイロン樹脂製である。また前後に一対(図1中では左右に一対)の吸気孔14を穿孔している。
図2(a)、(b)中、ラッパ状部分14aで示されるように吸気孔14は外層11の内表面側端部でラッパ状に拡径した形状となっている。
また、図2(a)、(b)中、クロスハッチングして示した外層11の内表面側端部における吸気孔14の開口周縁部には、ポンチカッターを使用した穿孔工程で発生するバリによる凹凸11cが形成されている。
これらラッパ状部分14aやバリによる凹凸11cは後述する本発明の吸気孔の形成方法を採用することにより形成することができるものである。
なお、後述する本発明の吸気孔の形成方法で使用するポンチカッター43の筒状刃44の形状や圧入位置を適宜設定することで、ラッパ状部分14aや凹凸11cの形状を調整することができ、実質的にラッパ状部分14aや凹凸11cが形成されない状態とすることもできる。
そして、このノッチ状の間隙Nにより剥離進行の起点としての機能が発揮され、図2(a)中二点鎖線で示すように、積層する外層11と内層12との剥離をスムーズに開始、進展させて剥離空間Sを拡大し、外気Aを、吸気孔14を介して外層11と内層12の間に容易に導入することができる。
図3は本発明の吸気孔の形成方法の概略説明図で、使用する穿孔装置の全体的な構成は図9に示すものと類似的であり、先端部にカッター受け台36を配設した支持棒34を容器1の口筒部2内に挿入配置し、このカッター受け台36に対向するようにポンチカッター43を配設する。
なお、図1に示される容器1のように、左右に一対の吸気孔14を形成する場合は、穿孔装置も左右対称状に配置して、左右に一対のポンチカッター43を配設して穿孔を実施する。
ポンチカッター43の筒状刃44を外層11内に圧入前進させ、外層11を完全に切抜くことなく先端に未切抜き部11bを周状に残存させた状態とし、その後ポンチカッター43を後退させながら、後述する係止部45の抜け防止機能により未切抜き部11bを破断し、吸気孔14を穿孔、形成する、と云うものである。
このため本発明の吸気孔の形成方法にあっては、ポンチカッター43の先端部に配設される筒状刃44の刃先は、外層11内部に留まり内層12に直接当接することがないので、従来の形成方法のようにポンチカッターの刃先による刃痕を内層12に残すことなく吸気孔14を形成することができる。
このポンチカッター43は、先端部に筒状刃44を有し、この筒状刃44の内周面に係止部45の一実施形態である縮径段部45aを間歇状に4箇所(図5(b)参照)に周設している。
なお、このポンチカッター43の刃先44pの径は4mmで、縮径段部45aの形成位置と刃先44pの間隔h(図4(b)参照)は0.8mmである。
図6(a)に示されるように、筒状刃44が圧入前進限の位置で、刃先44pは外層11の内周面直前の位置に位置する。本実施例では吸気孔14を穿孔する口筒部2の下部の肉厚は2.5mmであるが、外層11の内周面から約0.02mmの位置を圧入前進限界としており、外層11を完全に切抜くことなく先端に未切抜き部11bを周状に残存した状態で、切抜き片11aが筒状刃44内に残留していることになる。
また、未切抜き部11bの破断時には、合成樹脂(本実施例ではHDPE樹脂)が多少なりとも延伸変形するため、図6(c)中の拡大図でクロスハッチングして示される領域に、破断に伴うバリによる凹凸11cが形成される。
図7、図8には他の二つの例を示した。
図7の例は、図4のポンチカッターと同様に縮径段部45aを係止部45としたものであるが、図4のものに対しての縮径段部45aを全周に亘って形成しているのが特徴的で、その分、圧入前進性と抜け防止機能のバランスを考慮して縮径段部45aによる縮径の程度を小さくし、また縮径段部45aの形成位置と刃先44pの間隔hを0.4mmと小さくしているのが特徴的である。
段部がないので、特に硬質の合成樹脂で良好な圧入前進性と抜け防止機能を発揮させることができる。
たとえば、使用するポンチカッターについては3つの例を説明したが、さらに適宜の形状の突起を複数周状に配設して係止部を構成する等、圧入前進性と抜け防止機能を考慮してさらにさまざまなバリエーションのものを採用することができる。
また、本発明のデラミボトルタイプの積層ブロー成形容器は、ポンプ付き注出容器の容器本体の他にも、口筒部に櫛体を嵌合させた櫛体付き注出容器の容器本体や、スクイズタイプのデラミ容器としても使用することができる。
2 ;口筒部
3 ;肩部
4 ;胴部
11;外層
11a;切抜き片
11b;未切抜き部
11c;(バリによる)凹凸
12;内層
14;吸気孔
14a;ラッパ状部分
S ;剥離空間
N ;ノッチ状の間隙
A ;外気
21;キャップ
22;螺合筒壁
23;頂壁
25;注出ポンプ
26;ノズルヘッド
27;組付きフランジ
28;パッキング片
30;穿孔装置
31;受け部材
32;支持部材
33;支持軸
34;支持棒
36;カッター受け台
36a;受け面
37;ボルト
40;カッター部材
41;摺動部材
42;支持棒
43;ポンチカッター
44;筒状刃
44p;刃先
45;係止部
45a;縮径段部
45a1;テーパー部
45b;テーパー状縮径部
46;透孔
t ;隙間
Claims (7)
- 定形の外殻を形成する合成樹脂製の外層(11)と、該外層(11)に剥離可能に積層する合成樹脂製の内層(12)とから成り、口筒部(2)の所定位置においてポンチカッターにより外層(11)に吸気孔(14)を穿孔したブロー成形容器であって、前記外層(11)の内表面側端部における前記吸気孔(14)の形状を、ラッパ状に拡径した形状としたことを特徴とするブロー成形容器。
- 外層(11)の内表面側端部における吸気孔(14)の開口周縁部にポンチカッターによる穿孔工程で発生するバリによる凹凸(11c)が形成されていることを特徴とする請求項1記載のブロー成形容器。
- 定形の外殻を形成する合成樹脂製の外層(11)と、該外層(11)に剥離可能に積層する合成樹脂製の内層(12)とから成り、口筒部(2)の所定位置においてポンチカッター(43)により外層(11)を穿孔して吸気孔(14)を形成する方法であって、前記ポンチカッター(43)は先端部に筒状刃(44)を有し、該筒状刃(44)の内周面に該筒状刃(44)の外層(11)からの後退時に、該外層(11)からの抜け防止機能を発揮する係止部(45)を配設したものを使用し、前記筒状刃(44)を刃先(44p)が外層(11)の内表面の直近位置になるまで圧入前進させ、前記外層(11)を完全に切抜くことなく先端に未切抜き部(11b)を周状に残存させた状態とし、次に、筒状刃(44)の後退に伴って前記係止部(45)の抜け防止機能により、筒状刃(44)内に残留する、未切抜き部(11b)を残して切抜かれた前記切抜き片(11a)を後退させ、該後退により前記未切抜き部(11b)を破断して切抜き片(11a)を完全に切抜かれた状態として前記吸気孔(14)を穿孔することを特徴とする吸気孔の形成方法。
- ポンチカッター(43)の筒状刃(44)の内周面に縮径段部(45a)を周設し、該縮径段部(45a)を係止部(45)とした請求項3記載の吸気孔の形成方法。
- 筒状刃(44)の内周面を、縮径段部(45a)の内周端からテーパー状に拡径させて刃先(44p)に至る構成とした請求項4記載の吸気孔の形成方法。
- 縮径段部(45a)を周方向に間歇状に周設した請求項4または5記載の吸気孔の形成方法。
- ポンチカッター(43)の筒状刃(44)の内周面に、刃先(44p)に向かってテーパー状に縮径させたテーパー状縮径部(45b)を形成し、該テーパー状縮径部(45b)を係止部(45)とした請求項3記載の吸気孔の形成方法。
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EP12827554.2A EP2752370B1 (en) | 2011-08-31 | 2012-08-08 | Laminated blow-molded container, and process for forming one or more air intake holes in such a container |
CA2847329A CA2847329C (en) | 2011-08-31 | 2012-08-08 | Laminated, blow-molded container and process for forming one or more air intake holes |
KR1020137016840A KR101922267B1 (ko) | 2011-08-31 | 2012-08-08 | 적층 블로우 성형용기 및 흡기구멍의 형성방법 |
US14/241,176 US9387951B2 (en) | 2011-08-31 | 2012-08-08 | Laminated, blow-molded container and process for forming one or more air intake holes |
AU2012303095A AU2012303095B2 (en) | 2011-08-31 | 2012-08-08 | Multi-layered-blow-molded container and method for forming air inlet hole |
CN201280003696.2A CN103221313B (zh) | 2011-08-31 | 2012-08-08 | 层叠吹塑成型容器及进气孔的形成方法 |
US14/704,479 US9731857B2 (en) | 2011-08-31 | 2015-05-05 | Laminated, blow-molded container and process for forming one or more air intake holes |
AU2016231643A AU2016231643B2 (en) | 2011-08-31 | 2016-09-26 | Multi-layered-blow-molded container and method for forming air inlet hole |
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CN (1) | CN103221313B (ja) |
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JP5979467B2 (ja) * | 2011-08-31 | 2016-08-24 | 株式会社吉野工業所 | 積層ブロー成形容器及び吸気孔の形成方法 |
ES2684318T3 (es) | 2013-11-27 | 2018-10-02 | Kyoraku Co., Ltd. | Recipiente deslaminable y método para su fabricación |
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JP6561442B2 (ja) * | 2014-09-10 | 2019-08-21 | キョーラク株式会社 | 被加工物の加工方法、穴あけドリル |
CN106809461A (zh) * | 2015-12-01 | 2017-06-09 | 威玛精密化学科技股份有限公司 | 双层容器及其制法 |
CN109278109B (zh) * | 2017-07-22 | 2020-09-11 | 广东洛波特机器人自动化技术有限公司 | 一种基于光电探测定位的包装瓶自动打孔机 |
WO2019039166A1 (ja) * | 2017-08-24 | 2019-02-28 | パナソニックIpマネジメント株式会社 | 誘導加熱調理器 |
DE102017121702B4 (de) * | 2017-09-19 | 2019-07-11 | Inotech Kunststofftechnik Gmbh | Spenderbehälter und Vorrichtung zur Herstellung des Spenderbehälters |
WO2019093068A1 (ja) * | 2017-11-08 | 2019-05-16 | 北海製罐株式会社 | 合成樹脂製多重容器 |
JP6910735B2 (ja) * | 2017-12-28 | 2021-07-28 | 株式会社吉野工業所 | 合成樹脂製容器、プリフォーム、及び合成樹脂製容器の製造方法 |
CN111511648B (zh) * | 2017-12-28 | 2022-07-05 | 株式会社吉野工业所 | 合成树脂制容器 |
WO2019173718A1 (en) * | 2018-03-09 | 2019-09-12 | Dispenser Packaging, LLC | Liquid dispense system |
US11559914B2 (en) * | 2020-06-02 | 2023-01-24 | Frito-Lay North America, Inc. | Cutting apparatus for foodstuffs |
DE102021116277B4 (de) | 2021-06-23 | 2024-07-04 | Gaplast Gmbh | Verfahren zur Herstellung eines Behälters aus einem steifen Außenbehälter und einem leicht verformbaren Innenbeutel |
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KR101922267B1 (ko) | 2019-02-13 |
CA3016941A1 (en) | 2013-03-07 |
CA3016941C (en) | 2020-03-31 |
CN103221313B (zh) | 2017-02-15 |
JP5979467B2 (ja) | 2016-08-24 |
EP3147101A1 (en) | 2017-03-29 |
US20150266199A1 (en) | 2015-09-24 |
EP2752370B1 (en) | 2017-10-04 |
KR20140052928A (ko) | 2014-05-07 |
CA2847329C (en) | 2020-04-14 |
AU2012303095A1 (en) | 2014-04-17 |
US9731857B2 (en) | 2017-08-15 |
JP2013049470A (ja) | 2013-03-14 |
US9387951B2 (en) | 2016-07-12 |
AU2016231643A1 (en) | 2016-10-20 |
US20140239002A1 (en) | 2014-08-28 |
EP2752370A1 (en) | 2014-07-09 |
AU2016231643B2 (en) | 2018-01-04 |
EP3147101B1 (en) | 2018-06-13 |
CN103221313A (zh) | 2013-07-24 |
CA2847329A1 (en) | 2013-03-07 |
AU2012303095B2 (en) | 2016-10-20 |
EP2752370A4 (en) | 2015-05-27 |
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