JP2013199297A - Hinged lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinged lid that can prevent label from becoming unreadable even if the opening and closing of an openable/closable lid is repeated.SOLUTION: A hinged lid 1 includes: a fixed lid 6 for covering a part of the opening 4, when fitted to an opening 4 in the top of a container; and an openable/closable lid 7 swingably continued from the fixed lid 6 through a grooved hinge 8. The hinged lid includes a synthetic resin sheet member 9 provided over both areas of the surfaces of the fixed lid 6 and the openable/closable lid 7, and having a surface provided with printed layers 32a and 32b for providing predetermined indication.

Description

  The present invention relates to a hinged lid.

  2. Description of the Related Art Conventionally, there is known a hinged lid that has a relatively large-diameter opening and is attached to the upper part of a container containing powder or granules such as powdered milk (for example, see Patent Document 1). ).

  The hinged lid includes a fixed lid that closes a substantially half on one side of the opening of the container, and is pivotally connected to the fixed lid via the hinge so as to be swingable on the other half of the opening. And an opening / closing lid portion that closes the portion so as to be freely opened and closed. Furthermore, an outer peripheral wall extending integrally downward from the outer peripheral edge is provided on the outer peripheral edge of the fixed lid part and the opening / closing lid part.

  When taking out the contents of the container, the opening / closing operation of the container can be performed very easily by swinging the opening / closing lid in the standing direction to open a part of the opening of the container. That is, in a container containing powdered milk or the like, when the powdered milk or the like is taken out from the inside of the container, the opening and closing operation of the opening / closing lid portion can be easily performed with the other hand while holding the spoon with the other hand. Can do.

  The hinged lid is formed of a synthetic resin, and includes a coated paper on the surface of which a required display such as a trade name, a logo, and a usage amount is printed. For example, the coated paper can be molded integrally with the hinged lid without any step by in-mold molding when the hinged lid is injection molded.

  The coated paper preferably has as large an area as possible in order to make the required display easy to see. For example, the coated paper is disposed across both the fixed lid portion and the open / close lid portion.

JP 2003-267420 A

  However, in the conventional hinged lid, when the coated paper is disposed across both the fixed lid portion and the opening / closing lid portion, the coated paper is placed on the hinge portion while the opening / closing operation of the opening / closing lid portion is repeated. There is an inconvenience that the display of the damaged portion cannot be read.

  An object of the present invention is to provide a hinged lid that eliminates such inconvenience and does not prevent the display from being read even if the opening / closing operation of the opening / closing lid is repeated.

  In order to achieve such an object, the hinged lid of the present invention comprises a fixed lid that closes a part of the opening when the lid is attached to the upper opening of the container, and a groove in the fixed lid. A hinged lid body provided with an openable / closable lid portion that is swingably connected via a hinge-like hinge portion and that closes the opening portion in an openable / closable manner, the surfaces of the fixed lid portion and the open / close lid portion And a synthetic resin sheet member provided on the surface with a print layer for performing a predetermined display.

  In the lid with a hinge according to the present invention, a synthetic resin sheet member is provided on both surfaces of the fixed lid portion and the opening / closing lid portion, and a predetermined display is displayed on the surface of the synthetic resin sheet member. The printing layer to be performed is formed. Since the synthetic resin sheet member is flexible, even if the opening / closing lid portion is repeatedly opened and closed, the portion along the hinge portion is not damaged. Therefore, according to the hinged lid body of the present invention, it is possible to prevent the display from being unreadable even if the opening and closing lid portion is repeatedly opened and closed.

  In the hinged lid of the present invention, the synthetic resin sheet member is made of a polypropylene resin, and an adhesive resin layer that adheres the synthetic resin sheet member, the fixed lid portion, and the open / close lid portion to the lid side. And is formed integrally with the fixed lid portion and the opening / closing lid portion by in-mold molding.

  The synthetic resin sheet member is flexible by being made of a polypropylene resin, and can have excellent resistance to repeated opening and closing operations of the opening and closing lid. In addition, the synthetic resin sheet member is provided with the adhesive resin layer on the lid side, and thereby firmly adheres to the fixed lid portion and the opening / closing lid portion through the adhesive resin layer by the in-mold molding. can do. Moreover, according to the said in-mold shaping | molding, the said synthetic resin sheet member, the said fixing lid part, and the said opening-and-closing lid part can be adhere | attached on the same surface without a level | step difference.

  In the hinged lid of the present invention, when the synthetic resin sheet member is made of polypropylene resin, the adhesive resin layer is preferably made of polyethylene resin. The adhesive resin layer is made of a polyethylene-based resin, so that it is easily melted by heat and pressure during the in-mold molding, and the synthetic resin sheet member made of a polypropylene-based resin is connected to the fixed lid portion and the open / close It can be firmly bonded to the lid.

The perspective view which shows the state which mounted | wore the container with the cover body with a hinge of embodiment of this invention. Explanatory sectional drawing which shows the structure of the container shown in FIG. Explanatory sectional drawing which shows the structure of a synthetic resin sheet member. Explanatory sectional drawing which shows the manufacturing method of the cover body with a hinge of embodiment of this invention.

  Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, the hinged lid body 1 of the present embodiment is used by being attached to the upper part of a bottomed cylindrical container 2. The container 2 is a bottomed cylindrical can body containing powdered milk, and an annular upper frame member 3 is wound around the upper edge thereof, and the upper frame member 3 has an opening 4 on the inner peripheral side. I have. The opening 4 is sealed by a sheet-like sealing member 5 that is detachably attached to the upper frame member 3, and is opened by removing the sealing member 5.

  The lid 1 is made of, for example, polyethylene resin or ethylene / 1-butene copolymer resin, and has a substantially semicircular fixed lid 6 that covers a substantially half on one side on the container 2 and a half on the other side. And a substantially semicircular opening / closing lid portion 7 covering the portion. The fixed lid portion 6 and the open / close lid portion 7 are integrally connected to each other via a hinge portion 8 having a linear V groove, and the open / close lid portion 7 is swingable with respect to the fixed lid portion 6 by the hinge portion 8. It is said that.

  Further, a synthetic resin sheet member 9 is provided on both the fixed lid portion 6 and the opening / closing lid portion 7 across both regions. Synthetic resin sheet member 9 is printed with required information such as product name, logo, usage amount, etc. on the entire outer surface of the can, and product information and other information is printed on the opening / closing lid portion 7 on the inner surface of the can. Has been. A lot of information can be provided to the consumer by printing on both the front and back sides of the synthetic resin sheet member 9.

  An annular outer peripheral wall 10 extending downward over the entire circumference is integrally connected to a circular outer periphery composed of the fixed lid portion 6 and the opening / closing lid portion 7. On the other hand, an inner peripheral wall 11 that is annularly continuous along the inner side of the outer peripheral wall 10 is integrally provided on the inner surface side of the fixed lid portion 6 and the opening / closing lid portion 7. The outer peripheral wall 10 is in contact with the winding fastening portion 12 with the upper frame member 3 of the container 2 and the outer surface below the winding fastening portion 12, and the inner peripheral wall 11 is in contact with the inner peripheral surface of the winding fastening portion 12.

  A first score 13 is formed at a position corresponding to the hinge portion 8 of the outer peripheral wall 10 to be broken when the opening / closing lid portion 7 is first swung (at the time of opening operation). In addition, a pilfer proof belt 14 is continuously connected to the peripheral edge of the lower end of the outer peripheral wall 10 via a second score 15.

  The pilfer proof band 14 is in close contact with the outer surface of the container 2 over the entire circumference, and a gripping piece 16 is provided at one end as a cutting start end. The gripping piece 16 is connected to the other end portion (cutting end edge portion) 18 of the pilfer proof band 14 through a third breakable score 17.

  The outer peripheral wall 10 is provided with a finger hooking portion 19 on a part of the outer peripheral portion along the second score 15 for the convenience of removing the lid 1 from the container 2 after the pilfer proof band 14 is excised. Yes.

  As shown in FIG. 3, the synthetic resin sheet member 9 is provided with printing layers 32 a and 32 b on both front and back surfaces of a synthetic paper 31 made of polypropylene resin. Here, the varnish layer 33 is provided on the printing layer 32a on the outer side of the can, and the adhesive resin layer 34 is provided on the printing layer 32b on the inner side of the can.

  The synthetic paper 31 is formed, for example, by biaxially stretching a polypropylene resin film, and a synthetic paper (manufactured by YUPO CORPORATION, manufactured by YUPO Corporation) in which a large number of fine pores (not shown) are formed. (Trade name YUPO) can be used. Synthetic paper 31 can obtain high whiteness and opacity because incident light is irregularly reflected by the fine pores.

  Generally, a polypropylene resin film has a low surface free energy and is inferior in adhesiveness and printing, so that printing is performed after corona treatment. However, the synthetic paper 31 can be printed in the same manner as paper made of ordinary plant fibers, and the print layers 32a and 32b can be formed by gravure printing, offset printing, screen printing, flexographic printing, and the like.

  The varnish layer 33 can be formed by, for example, applying a print protection varnish made of an ultraviolet curable resin such as a polyacrylate resin or a polymethacrylate resin on the print layer 32a.

  The adhesive resin layer 34 can be formed by in-mold molding, which will be described later, so long as the synthetic paper 31 made of polypropylene resin can be bonded to the lid 1 formed of a linear ethylene / 1-butene copolymer resin. You may consist of such resin. Examples of the resin used for such adhesion include a polyethylene-based resin, but an additive-free polyethylene resin is preferable. As the additive-free polyethylene resin, generally, low density polyethylene (LDPE) synthesized by radical polymerization (active polymerization) can be exemplified. The adhesive resin layer 34 can be formed, for example, on the printing layer 32b by a laminating method using an extruder.

  The hinged lid body 1 of the present embodiment can be manufactured using, for example, an in-mold injection molding machine 41 shown in FIG.

  The in-mold injection molding machine 41 includes a female mold 42 and a male mold 43, and a cavity 44 is formed between the female mold 42 and the male mold 43. The male mold 43 is provided with a runner 46 connected to the cavity 44 through a gate 45. The runner 46 communicates with a cylinder (not shown) for injecting molten resin via a sprue (not shown).

  In the in-mold injection molding machine 41, first, the synthetic resin sheet member 9 is disposed on the female mold 42 side in the cavity 44. At this time, the synthetic resin sheet member 9 is disposed so that the varnish layer 33 is in contact with the inner wall surface of the female mold 42 and the adhesive resin layer 34 is opposed to the male mold 43 in the cavity 44. The The synthetic resin sheet member 9 can be arranged by means such as electrostatic, suction, or placement.

  Next, the female mold 42 and the male mold 43 are closed, and molten resin made of, for example, polyethylene resin is injected into the cavity 44 from the cylinder through the sprue, the runner 46, and the gate 45. In this way, the hinged lid 1 is formed in the cavity 44, and at the same time, the adhesive resin layer 34 of the synthetic resin sheet member 9 is melted by heat and pressure during molding, and the synthetic resin sheet member 9 Are integrally bonded to the hinged lid 1 through the adhesive resin layer 34.

  As a result, the hinged lid body 1 including the synthetic resin sheet member 9 can be obtained.

  When opening the container 2 provided with the hinged lid 1, first, the gripping piece 16 is gripped, and the third score 17 and the second score 15 are broken in this order, and the pilfer is moved along the outer peripheral surface of the container 2. The proof band 14 is cut from the outer peripheral wall 10. Next, a finger is put on the finger-hanging portion 19 and the hinged lid 1 is once removed from the container 2.

  Next, the first score 13 of the hinged lid 1 is broken to make the opening / closing lid 7 swingable with respect to the fixed lid 6. Then, after removing the sealing member 5 from the upper frame member 3 to open the container 2, the hinged lid 1 is again attached to the upper edge of the container 2.

  Thereafter, the container 2 can take out the powdered milk of the contents using a spoon by swinging the open / close lid portion 7 with respect to the fixed lid portion 6 and standing up. After taking out the required amount of powdered milk, the opening / closing lid portion 7 is again swung with respect to the fixed lid portion 6 and the container 2 is closed.

  As a result, in the hinged lid body 1, the opening / closing lid portion 7 is repeatedly opened and closed every time the milk powder is taken out, and the synthetic resin sheet member 9 is damaged along the hinge portion 8, and the display by the printing layer 32 a is performed. There is concern that it will not be readable. However, the hinged lid body 1 of the present embodiment is flexible because the synthetic resin sheet member 9 is made of polypropylene resin, and has excellent resistance to repeated opening and closing operations of the opening and closing lid portion 7. Even if the opening / closing operation is repeated 400 times, no damage occurs.

  Therefore, according to the cover body 1 with a hinge, it can prevent that the synthetic resin sheet member 9 is damaged in the part along the hinge part 8, and cannot display the display by the printing layer 32a.

  DESCRIPTION OF SYMBOLS 1 ... Cover body with hinge, 2 ... Container, 4 ... Opening part, 6 ... Fixed cover part, 7 ... Opening / closing cover part, 8 ... Hinge part, 9 ... Synthetic resin sheet member.

Claims (3)

A fixed lid that closes a part of the opening when the container is attached to the upper opening of the container, and the fixed lid that is swingably connected to the fixed lid via a groove-like hinge. A lid with a hinge provided with an openable / closable lid for closing and opening the part,
A hinged lid body comprising a synthetic resin sheet member provided on the surface of the fixed lid portion and the opening / closing lid portion so as to straddle both regions and having a predetermined display. .   2. The hinged lid according to claim 1, wherein the synthetic resin sheet member is made of a polypropylene-based resin, and adheres the synthetic resin sheet member, the fixed lid portion, and the open / close lid portion to the lid side. A hinged lid body comprising a resin layer and formed integrally with the fixed lid portion and the opening / closing lid portion by in-mold molding.   3. The hinged lid according to claim 2, wherein the adhesive resin layer is made of a polyethylene resin.

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