WO2016039134A1 - 被加工物の加工方法、穴あけドリル - Google Patents
被加工物の加工方法、穴あけドリル Download PDFInfo
- Publication number
- WO2016039134A1 WO2016039134A1 PCT/JP2015/073894 JP2015073894W WO2016039134A1 WO 2016039134 A1 WO2016039134 A1 WO 2016039134A1 JP 2015073894 W JP2015073894 W JP 2015073894W WO 2016039134 A1 WO2016039134 A1 WO 2016039134A1
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- WIPO (PCT)
- Prior art keywords
- layer
- outer shell
- outside air
- introduction hole
- air introduction
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/04—Drills for trepanning
-
- 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
- B26F1/16—Perforating by tool or tools of the drill type
-
- 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
- B65D23/00—Details of bottles or jars not otherwise provided for
- B65D23/02—Linings or internal coatings
-
- 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
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/14—Linings or internal coatings
- B65D25/16—Loose, or loosely-attached, linings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2226/00—Materials of tools or workpieces not comprising a metal
- B23B2226/61—Plastics not otherwise provided for, e.g. nylon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/20—Number of cutting edges
- B23B2251/201—Single cutting edge
-
- 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
- B65D2205/00—Venting means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
- Y10T408/45—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product including Tool with duct
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/896—Having product-receiving chamber
Definitions
- the present invention relates to a processing method for a workpiece and a drill. This method is suitably applied to the step of forming the outside air introduction hole in the outer shell of the delamination container.
- Such a delamination container includes an inner bag constituted by an inner layer and an outer shell constituted by an outer layer.
- An outer air introduction hole is provided in the outer shell of the delamination container to enable the inner bag to contract.
- the outside air introduction hole is usually formed from the outside of the container using a punch cutter or the like, but it is not easy to reliably form the outside air introduction hole in the outer shell without damaging the inner bag.
- Patent Document 1 an outside air introduction hole is formed in the mouth portion from the mouth outer surface side by bringing the cutter blade at the tip of the punch cutter close to the stand while the cradle is in contact with the inner surface of the mouth portion. Yes. And the cutter blade is prevented from damaging the inner bag of the delamination container by setting so that the gap between the cradle and the cutter blade does not become a predetermined distance or less.
- the method of Patent Document 1 has a problem that it is difficult to form an outside air introduction hole in a portion other than the mouth portion of the container.
- the present invention has been made in view of such circumstances, and provides a processing method of a workpiece capable of forming an outside air introduction hole at an arbitrary position of an outer shell of a container.
- the flat surface is processed while rotating a drilling drill having a cylindrical tip, a flat surface and a notch provided at the tip, and having a blade on the side of the notch.
- a processing method for a workpiece which includes a processing step of forming a round hole in the workpiece by pressing the workpiece against the workpiece and bringing the blade portion into contact with the workpiece.
- the workpiece is machined using a drill having a cylindrical tip, a flat surface and a notch provided at the tip, and a blade on the side of the notch. Since the drilling drill has such a configuration, if the work piece has a certain degree of rigidity and is easily deformed, the drilling drill can be rotated by pressing the flat surface against the work piece while rotating the drilling drill. The tip of the tip slightly sinks into the work piece. As a result, the workpiece enters the cutout portion, so that the blade portion contacts the workpiece and a round hole is formed in the workpiece.
- the outer shell of the delamination container has a certain degree of rigidity and is easily elastically deformed, a round hole can be easily formed by the method of the present invention.
- the inner bag is separated from the outer shell and deformed toward the inner side of the delamination container, so the flat surface is embedded in the inner bag. Absent. For this reason, a blade part does not contact an inner bag and an inner bag is not damaged. Therefore, according to the present invention, it is easy to form a round hole only in the outer shell of the delamination container.
- This round hole can be used as an outside air introduction hole for introducing outside air between the outer shell and the inner bag.
- the workpiece is a laminated peeling container that includes an outer shell and an inner bag, and the inner bag peels and shrinks from the outer shell as the content decreases
- the processing step includes the flat A step of forming an outside air introduction hole in the outer shell by pressing a surface against the outer shell and bringing the blade portion into contact with the outer shell;
- the tip of the drilling drill has a C-shaped cross section.
- the flat surface has a radial width of 0.1 to 0.2 mm.
- the inner surface of the tip portion is provided with a tapered surface that extends toward the tip.
- a drilling drill having a cylindrical tip, a flat surface and a notch provided at the tip, and a blade on the side of the notch.
- FIG. 3 is a sectional view taken along line AA in FIG. 1 and 2 show a state before the bottom seal protrusion 27 is bent, and FIG. 3 shows a state after the bottom seal protrusion 27 is bent.
- FIG. 4 is an enlarged view of a region including a bottom surface 29 in FIG. 3, (a) shows a state before the bottom seal protrusion 27 is bent, and (b) shows a state after the bottom seal protrusion 27 is bent.
- Show. 3 is a cross-sectional view showing a layer configuration of an outer layer 11 and an inner layer 13.
- FIG. 10 shows a manufacturing process subsequent to FIG. 9 for the delamination container 1 of FIG.
- FIG. 10 shows the configuration of a drill 30 used to form the outside air introduction hole 15.
- FIG. 10 (a) is a front view
- FIG. 10 (b) is a left side view
- FIG. 10 (c) is a cross-sectional view along AA
- (e) is an enlarged view of region C.
- FIG. FIG. 10 shows another configuration of the drill 30 used for forming the outside air introduction hole 15, (a) is a front view, and (b) is a left side view.
- the process following FIG. 10 of the lamination peeling container 1 of FIG. 1 is shown.
- the usage method of the lamination peeling container 1 of FIG. 1 is shown.
- a delamination container 1 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.
- an outer shell 12 is constituted by the outer layer 11
- an inner bag 14 is constituted by the inner layer 13.
- 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 accommodating portion 7 includes a trunk portion 19 having a substantially constant cross-sectional shape in the longitudinal direction of the accommodating portion, and a shoulder portion 17 that connects between the trunk portion 19 and the mouth portion 9. Is provided.
- the shoulder 17 is provided with a bent portion 22.
- the bending portion 22 is a portion where the bending angle ⁇ shown in FIG. 3 is 140 degrees or less and the radius of curvature on the inner surface side of the container is 4 mm or less. When there is no bent portion 22, the separation between the inner layer 13 and the outer layer 11 spreads from the body portion 19 to the mouth portion 9, and the inner layer 13 and the outer layer 11 may be peeled also at the mouth portion 9.
- the inner layer 13 and the outer layer 11 are peeled at the mouth portion 9, the inner bag 14 may fall into the outer shell 12, and therefore, the peeling of the inner layer 13 and the outer layer 11 at the mouth portion 9 is not desirable.
- the bent portion 22 since the bent portion 22 is provided, when the separation between the inner layer 13 and the outer layer 11 spreads from the body portion 19 to the bent portion 22, the inner layer 13 is bent at the bent portion 22 as shown in FIG. Thus, the force for peeling the inner layer 13 from the outer layer 11 is not transmitted to the upper part of the bent portion 22, and as a result, the peeling between the inner layer 13 and the outer layer 11 in the upper portion of the bent portion 22 is suppressed.
- the 3 to 5, the bent portion 22 is provided on the shoulder portion 17, but the bent portion 22 may be provided at the boundary between the shoulder portion 17 and the trunk portion 19.
- the lower limit of the bending angle ⁇ is not particularly defined, but is preferably 90 ° or more in consideration of ease of manufacture.
- the lower limit of the radius of curvature is not particularly specified, but is preferably 0.2 mm or more in consideration of ease of production.
- the bending angle ⁇ is preferably 120 degrees or less, and the curvature radius is preferably 2 mm or less.
- the bending angle ⁇ is, for example, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140 degrees, and is within a range between any two of the numerical values exemplified here. It may be.
- the curvature radius is, for example, 0.2, 0.4, 0.6, 0.8, 1, 1.2, 1.4, 1.6, 1.8, 2 mm, where It may be within a range between any two of the exemplified numerical values.
- the bent portion 22 has a distance L2 from the container central axis C to the inner surface of the container at the bent portion 22 is 1.3, which is a distance L1 from the container central axis C to the inner surface of the container at the mouth 9. It is provided at a position that is double or more.
- the delamination container 1 of the present embodiment is formed by blow molding, and as L2 / L1 increases, the blow ratio at the bent portion 22 increases and the wall thickness decreases, so that L2 / L1 ⁇ 1. 3, the thickness of the inner layer 13 at the bent portion 22 is sufficiently reduced, the inner layer 13 is more easily bent at the bent portion 22, and the inner layer 13 and the outer layer 11 are more reliably separated at the mouth portion 9. Is prevented.
- L2 / L1 is, for example, 1.3 to 3, and preferably 1.4 to 2. Specifically, L2 / L1 is, for example, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.5, 3, where It may be within a range between any two of the numerical values exemplified in.
- the thickness at the mouth portion 9 is 0.45 to 0.50 mm
- the thickness at the bent portion 22 is 0.25 to 0.30 mm
- the thickness at the trunk portion 19 is 0. .15 to 0.20 mm.
- the valve member 5 that adjusts the flow of air between 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 outer shell 12 is provided with an outside air introduction hole 15 that communicates the intermediate space 21 and the outer space S in the housing portion 7.
- the outside air introduction hole 15 is a through hole provided only in the outer shell 12 and does not reach the inner bag 14.
- the valve member 5 is inserted in the outside air introduction hole 15 and is slidable with respect to the outside air introduction hole 15.
- the valve member 5 is provided on the intermediate space 21 side of the shaft part 5a and has a larger sectional area than the shaft part 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 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 due to the pressure difference and the air flow, and the lid 5c closes the outside air introduction hole 15. 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, 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 locking portion 5b is provided with a protrusion 5d at a portion that contacts the outer shell 12 so that the locking portion 5b does not block the outside air introduction hole 15, and the protrusion 5d contacts the outer shell 12. Thus, a gap is provided between the outer shell 12 and the locking portion 5b. Instead of providing the protrusion 5d, a groove may be provided in the locking portion 5b to prevent the locking portion 5b from closing the outside air introduction hole 15. A specific example of the configuration of the valve member 5 is shown in FIG.
- the valve member 5 can be attached to 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 accommodating portion 7 is covered with a shrink film after the valve member 5 is attached.
- the valve member 5 is mounted in a valve member mounting recess 7 a provided in the housing portion 7 so that the valve member 5 does not interfere with the shrink film.
- An air flow groove 7b extending from the valve member mounting recess 7a in the direction of the mouth 9 is provided so that the valve member mounting recess 7a is not sealed with the shrink film.
- the valve member mounting recess 7 a is provided in the shoulder portion 17 of the outer shell 12.
- the shoulder portion 17 is an inclined surface, and a flat region FR is provided in the valve member mounting recess 7a. Since the flat region FR is provided so as to be substantially parallel to the inclined surface of the shoulder portion 17, the flat region FR is also an inclined surface. Since the outside air introduction hole 15 is provided in the flat region FR in the valve member mounting recess 7a, the outside air introduction hole 15 is provided on the inclined surface. For example, when the outside air introduction hole 15 is provided on the vertical surface of the trunk portion 19, the peeled inner bag 14 may come into contact with the valve member 5 and hinder the movement of the valve member 5.
- the inclination angle of the inclined surface is not particularly limited, but is preferably 45 to 89 degrees, more preferably 55 to 85 degrees, and further preferably 60 to 80 degrees.
- region FR in the valve member attachment recessed part 7a is provided over the width W of 3 mm or more (preferably 3.5 mm or 4 mm or more) circumference
- FIG. . For example, when the outside air introduction hole 15 is ⁇ 4 mm and the outside air introduction hole 15 is formed at the center of the flat region FR, the valve member mounting recess 7 a is set to ⁇ 10 mm or more.
- the upper limit of the width W of the flat region FR is not particularly defined, but as the width W of the flat region FR increases, the area of the valve member mounting recess 7a increases. As a result, the space between the outer shell 12 and the shrink film is increased.
- the width W is preferably not too large, and the upper limit is, for example, 10 mm. Accordingly, the width W is, for example, 3 to 10 mm, specifically, for example, 3, 3.5, 4, 4.5, 5, 6, 7, 8, 9, 10 mm, and is exemplified here. It may be within a range between any two of the numerical values.
- the radius of curvature of the inner surface of the outer shell 12 becomes sufficiently large, and the result is the adhesion between the outer shell 12 and the valve member 5. It was found that the performance was improved.
- the radius of curvature of the inner surface of the outer shell 12 is preferably 200 mm or more, more preferably 250 mm or more, or 300 mm or more within a range of 2 mm around the outside air introduction hole 15. This is because, when the radius of curvature is such a value, the inner surface of the outer shell 12 becomes substantially flat, and the adhesion between the outer shell 12 and the valve member 5 is good.
- 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 the laminated parison in blow molding using a cylindrical laminated parison including the outer layer 11 and the 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 seal 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 portion 27a as shown in FIG. 6B. 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 formed to be thicker than the inner layer 13 so that the restoring property is high.
- 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 has a single layer or a plurality of layers, and preferably contains a lubricant in at least one of the innermost layer and the outermost layer.
- the outer layer 11 has a single layer configuration, the single layer is the innermost layer and the outermost layer, and therefore, a lubricant may be contained in the layer.
- the outer layer 11 has a two-layer structure, the inner layer layer is the innermost layer, and the outer layer layer is the outermost layer, so that at least one of them may contain a lubricant.
- the outer layer 11 When the outer layer 11 is composed of three or more layers, the innermost layer is the innermost layer, and the outermost layer is the outermost layer. As shown in FIG. 7, the outer layer 11 preferably includes a repro layer 11c between the innermost layer 11b and the outermost layer 11a.
- the repro layer refers to a layer that is used by recycling burrs that are produced when a container is molded.
- lubricant those generally marketed as a lubricant can be used, and any of hydrocarbon-based, fatty acid-based, aliphatic amide-based, metal soap-based may be used, and two or more types may be used in combination. Good.
- hydrocarbon lubricant include liquid paraffin, paraffin wax, and synthetic polyethylene wax.
- fatty acid lubricants include stearic acid and stearyl alcohol.
- Examples of the aliphatic amide-based lubricant include fatty acid amides of stearic acid amide, oleic acid amide, and erucic acid amide, and alkylene fatty acid amides of methylene bis stearic acid amide and ethylene bis stearic acid amide.
- Examples of metal soap lubricants include metal stearates.
- the innermost layer of the outer layer 11 is a layer that is in contact with the inner layer 13, and by incorporating a lubricant into the innermost layer of the outer layer 11, the peelability between the outer layer 11 and the inner layer 13 is improved, and the contents of the laminated peeling container Dischargeability can be improved.
- the outermost layer of the outer layer 11 is a layer that comes into contact with the mold during blow molding, and the release property can be improved by containing a lubricant in the outermost layer of the outer layer 11.
- One or both of the innermost layer and the outermost layer of the outer layer 11 can be formed of a random copolymer between propylene and another monomer. Thereby, the shape restoring property, transparency, and heat resistance of the outer shell 12 can be improved.
- 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.
- a feeling of use of a container will worsen if a container is too hard, you may mix and use flexible materials, 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.
- a material in which a random copolymer and linear low-density polyethylene are mixed at a weight ratio of 85:15 can be used.
- the inner layer 13 is provided between the EVOH layer 13a provided on the outer surface side of the container, the inner surface layer 13b provided on the inner surface side of the container of the EVOH layer 13a, and between the EVOH layer 13a and the inner surface layer 13b.
- the adhesive layer 13c is provided.
- the EVOH layer 13a 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 13a preferably contains an oxygen absorbent. By containing the oxygen absorbent in the EVOH layer 13a, the oxygen barrier property of the EVOH layer 13a can be further improved.
- the melting point of the EVOH resin is preferably higher than the melting point of the resin constituting the outer layer 11.
- 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. In doing so, the holes are prevented from reaching the inner layer 13.
- 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 inner surface layer 13b is a layer that comes into contact with the contents of the delamination container 1, and is, for example, a polyolefin such as low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and a mixture thereof. It is preferably made of low-density polyethylene or linear low-density polyethylene.
- 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 adhesive layer 13c is a layer having a function of adhering the EVOH layer 13a and the inner surface 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.
- FIG. 9A a laminated structure corresponding to the container body 3 to be manufactured (one example is PE layer / adhesive layer / EVOH layer / PP layer / repro layer / PP layer in order from the container inner surface side).
- the laminated parison in a molten state provided with the laminated structure is extruded into a split mold for blow molding, and the split mold is closed.
- FIG. 9B a blow nozzle is inserted into the opening on the mouth 9 side of the container body 3, and air is blown into the cavity of the split mold while the mold is clamped.
- the split mold is opened and the blow molded product is taken out.
- the split mold has a cavity shape such that various shapes of the container body 3 such as the valve member mounting recess 7a, the air circulation groove 7b, and the bottom seal protrusion 27 are formed in the blow molded product. Further, the split mold is provided with a pinch-off portion below the bottom seal protrusion 27, and a lower burr is formed at a lower portion of the bottom seal protrusion 27, and is thus removed.
- the outside air introduction hole 15 is formed in the outer shell 12 of the delamination container 1 by using the perforating apparatus 2.
- this process will be described in detail.
- the delamination container 1 is set at a position close to the punching device 2.
- the drilling device 2 includes a drilling drill 30 having a main body 31 and a tip 32, and a motor 2c that rotationally drives the drilling drill 30 through the transmission belt 2b.
- the drilling device 2 is supported by a servo cylinder (not shown) that moves the drilling device 2 uniaxially by the rotation of the servo motor, and is in the direction of the arrow X1 in FIG. 10A and the direction of the arrow X2 in FIG. It is configured to be movable. With such a configuration, the tip 32 can be pressed against the outer shell 12 of the delamination container 1 while rotating the drilling drill 30. Further, the tact time can be shortened by controlling the position and moving speed of the punching device 2 with a servo motor.
- the drill 30 is provided with a cavity 33 extending from the main body 31 to the tip 32 (see FIGS. 11 to 12), and a ventilation pipe 2e communicating with the cavity 33 is connected thereto.
- the ventilation pipe 2e is connected to an intake / exhaust device (not shown). Thereby, air suction from the inside of the drilling drill 30 and blowing of air into the inside of the drilling drill 30 are possible.
- the tip 32 of the drilling drill 30 has a cylindrical shape with a C-shaped cross section, as shown in FIGS.
- the distal end portion 32 is provided with a flat surface 34 and a notch portion 37, and a side surface of the notch portion 37 is a blade portion 38.
- the side surface 32a of the distal end portion 32 may be perpendicular to the flat surface 34 as shown in FIG. 11, and as shown in FIG. 12, the tapered surface is inclined toward the center as the flat surface 34 is approached. It may be. In the latter case, since the edge of the formed outside air introduction hole 15 becomes a tapered surface that expands outward, there is an advantage that the valve member 5 can be easily inserted.
- the radial width W of the flat surface 34 is preferably 0.1 to 0.2 mm, more preferably 0.12 to 0.18 mm. If the width W is too small, the inner bag 14 is likely to be damaged during drilling, and if the width W is too large, the blade portion 38 is difficult to contact the outer shell 12, making it difficult to perform drilling smoothly.
- the range in which the notch 37 is provided is preferably 60 to 120 degrees, and more preferably 75 to 105 degrees. If this range is too large, the inner bag 14 is easily damaged during drilling, and if this range is too small, it is difficult to perform drilling smoothly.
- the angle ⁇ of the inclined surface P2 with respect to the circumscribed surface P1 in the blade portion 38 is preferably 30 to 65 degrees, and more preferably 40 to 55 degrees. If the angle ⁇ is too small, the inner bag 14 is liable to be damaged during drilling, and if the angle ⁇ is too large, it is difficult to perform drilling smoothly.
- the inner surface 35 of the distal end portion 32 is provided with a tapered surface 36 that extends toward the distal end.
- the angle of the tapered surface 36 with respect to the flat surface 34 is preferably 95 to 110 degrees, and more preferably 95 to 105 degrees.
- the angle ⁇ of the tapered surface 36 with respect to the direction X parallel to the rotation axis of the drilling drill 30 is preferably 5 to 20 degrees, and more preferably 5 to 15 degrees.
- a concave or V-shaped substantially annular groove 39 having a depth of 0.05 to 0.1 mm and a width of 0.1 to 0.2 mm is formed on the inner surface 35 in a direction perpendicular to the flat surface 34 (of the drill 30 It is preferable to apply at a pitch of 0.2 to 1 mm in the direction X) parallel to the rotation axis. In this case, the cut pieces 15a are more easily transferred to the inner surface 35.
- the pitch of the grooves 39 is more preferably 0.3 to 0.7 mm.
- the inner surface 35 is preferably subjected to a blasting process, so that the cut piece 15a is further easily transferred to the inner surface 35.
- the flat surface 34 is pressed against the outer shell 12 while rotating the drilling drill 30. At this time, the flat surface 34 slightly sinks into the outer shell 12. As a result, the outer shell 12 partially enters the cutout portion 37, the blade portion 38 contacts the outer shell 12, and the outer shell 12 is cut. When the flat surface 34 reaches the boundary between the outer shell 12 and the inner bag 14, the outer shell 12 is cut out in a circular shape to form a round hole-shaped outside air introduction hole 15. At this time, by aspirating the air inside the drilling drill 30, the cut piece 15 a formed by hollowing out the outer shell 12 is sucked into the cavity 33 of the drilling drill 30.
- the flat surface 34 After the flat surface 34 reaches the boundary between the outer shell 12 and the inner bag 14, when the flat surface 34 is pressed against the inner bag 14, the inner bag 14 is peeled from the outer shell 12 toward the inner side of the laminated peeling container 1. Therefore, the flat surface 34 does not sink into the inner bag 14, the blade portion 38 does not contact the inner bag 14, and the inner bag 14 is prevented from being damaged.
- the drilling drill 30 is used without being heated, and this has the advantage that the edge of the outside air introduction hole 15 is not melted and the edge is formed sharply. Moreover, in order to suppress the influence by the heat
- the excavation device 15 is released from the tip of the drilling drill 30 by retracting the drilling device 2 in the direction of the arrow X ⁇ b> 2 and blowing air into the cavity 33 of the drilling drill 30. .
- the formation of the outside air introduction hole 15 in the outer shell 12 is completed.
- the inner bag 14 is preliminarily peeled from the outer shell 12 by blowing air between the outer shell 12 and the inner bag 14 through the outer air introduction hole 15 using the blower 43. . Further, by blowing a specified amount of air while preventing air leakage through the outside air introduction hole 15, it is easy to control the preliminary peeling of the inner bag 14. Preliminary peeling may be performed on the entirety of the accommodating portion 7 or may be performed on a part of the accommodating portion 7. Since this is not possible, it is preferable that the inner bag 14 is preliminarily peeled from the outer shell 12 over substantially the entire housing portion 7.
- FIG. 13A hot air is applied to the bottom seal projection 27 to soften the thin portion 27a, and the bottom seal projection 27 is bent.
- FIG. 13B the valve member 5 is inserted into the outside air introduction hole 15.
- FIG.13 (c) the upper cylindrical part 41 is cut.
- FIG. 13D the inner bag 14 is inflated by blowing air into the inner bag 14.
- FIG.13 (e) the inner bag 14 is filled with the contents.
- FIG. 13 (f) the cap 23 is attached to the mouth portion 9.
- FIG. 13G the housing portion 7 is covered with a shrink film, and the product is completed.
- the hot air bending step may be performed before the outside air introduction hole opening step or before the inner layer preliminary peeling step.
- the step of cutting the upper tubular portion 41 may be performed before the valve member 5 is inserted into the outside air introduction hole 15.
- FIGS. 14 (a) to (c) the product filled with the contents is tilted and the side surface of the outer shell 12 is gripped and compressed to discharge the contents.
- the compressive force applied to the outer shell 12 directly becomes the compressive force of the inner bag 14, and the inner bag 14 is compressed. The contents are discharged.
- 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 FIG. 14 (d), the inside of the intermediate space 21 between the inner bag 14 and the outer shell 12 is in a reduced pressure state, and outside air is introduced into the intermediate space 21 through the outside air introduction hole 15 formed in the outer shell 12. be introduced.
- a check valve not shown
- 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 a protrusion 5d and a groove 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 outer shell 12 when the compressive force applied to the outer shell 12 after discharging the contents is removed, the outer shell 12 introduces outside air from the outside air introduction hole 15 into the intermediate space 21. It is restored to its original shape by its own restoring force.
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Abstract
Description
積層剥離容器の外殻には、内袋の収縮を可能にするために外気導入孔が設けられる。外気導入孔は、通常、容器の外側からポンチカッターなどを用いて形成されるが、内袋を傷つけずに外殻に外気導入孔を確実に形成することは容易ではない。
しかし、特許文献1の方法は、容器の口部以外の部位に外気導入孔を形成することが困難であるという問題がある。
好ましくは、前記被加工物は、外殻と内袋とを備え、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積層剥離容器であり、前記加工工程は、前記平坦面を前記外殻に押し付けて前記刃部を前記外殻に接触させることによって前記外殻に外気導入孔を形成する工程を備える。
好ましくは、前記穴あけドリルの前記先端部は、断面C字状である。
好ましくは、前記平坦面は、半径方向の幅が0.1~0.2mmである。
好ましくは、前記先端部の内面には、先端に向かって広がるテーパー面が設けられている。
本発明の別の観点によれば、筒状の先端部を有し、平坦面及び切欠部が前記先端部に設けられ且つ前記切欠部の側面に刃部を有する穴あけドリルが提供される。
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使用してもよい。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を使用することができる。
まず、図9(a)に示すように、製造すべき容器本体3に対応する積層構造(一例は、容器内面側から順に、PE層/接着層/EVOH層/PP層/リプロ層/PP層の積層構造)を備えた溶融状態の積層パリソンを押出し、この溶融状態の積層パリソンをブロー成形用の分割金型にセットし、分割金型を閉じる。
次に、図9(b)に示すように、容器本体3の口部9側の開口部にブローノズルを挿入し、型締めを行った状態で分割金型のキャビティー内にエアーを吹き込む。
以上の工程で、外殻12への外気導入孔15の形成が完了する。
次に、図13(b)に示すように、外気導入孔15に弁部材5を挿入する。
次に、図13(c)に示すように、上部筒状部41をカットする。
次に、図13(d)に示すように、内袋14内にエアーを吹き込むことによって、内袋14を膨らませる。
次に、図13(e)に示すように、内袋14内に内容物を充填する。
次に、図13(f)に示すように、口部9にキャップ23を装着する。
次に、図13(g)に示すように、収容部7をシュリンクフィルムで覆い、製品が完成する。
図14(a)~(c)に示すように、内容物が充填された製品を傾けた状態で外殻12の側面を握って圧縮して内容物を吐出させる。使用開始時は、内袋14と外殻12の間に実質的に隙間がない状態であるので、外殻12に加えた圧縮力は、そのまま内袋14の圧縮力となり、内袋14が圧縮されて内容物が吐出される。
Claims (6)
- 筒状の先端部を有し、平坦面及び切欠部が前記先端部に設けられ且つ前記切欠部の側面に刃部を有する穴あけドリルを回転させながら前記平坦面を被加工物に押し付けて前記刃部を前記被加工物に接触させることによって前記被加工物に丸穴を形成する加工工程を備える、被加工物の加工方法。
- 前記被加工物は、外殻と内袋とを備え、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積層剥離容器であり、
前記加工工程は、前記平坦面を前記外殻に押し付けて前記刃部を前記外殻に接触させることによって前記外殻に外気導入孔を形成する工程を備える、請求項1に記載の方法。 - 前記穴あけドリルの前記先端部は、断面C字状である、請求項1又は請求項2に記載の方法。
- 前記平坦面は、半径方向の幅が0.1~0.2mmである、請求項1~請求項3の何れか1つに記載の方法。
- 前記先端部の内面には、先端に向かって広がるテーパー面が設けられている、請求項1~請求項4の何れか1つに記載の方法。
- 筒状の先端部を有し、平坦面及び切欠部が前記先端部に設けられ且つ前記切欠部の側面に刃部を有する穴あけドリル。
Priority Applications (5)
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US15/507,514 US10213846B2 (en) | 2014-09-10 | 2015-08-25 | Method of machining workpiece and boring drill |
AU2015313353A AU2015313353B2 (en) | 2014-09-10 | 2015-08-25 | Method for processing article to be processed, and boring drill |
CN201580047335.1A CN106660142B (zh) | 2014-09-10 | 2015-08-25 | 一种被加工物的加工方法、开孔钻 |
KR1020177006028A KR101893782B1 (ko) | 2014-09-10 | 2015-08-25 | 피가공물의 가공 방법, 천공 드릴 |
EP15839545.9A EP3192602B1 (en) | 2014-09-10 | 2015-08-25 | Method for processing article to be processed |
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EP3597562B1 (en) * | 2017-03-15 | 2021-10-13 | Kyoraku Co., Ltd. | Delamination container |
JP6982238B2 (ja) * | 2017-10-30 | 2021-12-17 | キョーラク株式会社 | 積層剥離容器の容器本体の外気導入孔の形成方法、構造体 |
JP7025633B2 (ja) * | 2017-10-30 | 2022-02-25 | キョーラク株式会社 | 積層剥離容器の容器本体の外気導入孔の形成方法 |
JP7224732B2 (ja) * | 2019-05-31 | 2023-02-20 | 株式会社吉野工業所 | 合成樹脂製容器、及び合成樹脂製容器の製造方法 |
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Also Published As
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AU2015313353B2 (en) | 2019-11-21 |
KR20170038909A (ko) | 2017-04-07 |
EP3192602A1 (en) | 2017-07-19 |
AU2015313353A1 (en) | 2017-04-20 |
CN106660142A (zh) | 2017-05-10 |
EP3192602A4 (en) | 2017-08-23 |
US20170259352A1 (en) | 2017-09-14 |
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TW201628829A (zh) | 2016-08-16 |
JP2016055390A (ja) | 2016-04-21 |
KR101893782B1 (ko) | 2018-08-31 |
JP6561442B2 (ja) | 2019-08-21 |
US10213846B2 (en) | 2019-02-26 |
EP3192602B1 (en) | 2019-11-27 |
TWI642532B (zh) | 2018-12-01 |
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