JP2006224979A - Packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging container used for storing various kinds of food or the like for the display and sale which is capable of easily and reliably locking/unlocking a lid of the container with the lid to/from a container body. <P>SOLUTION: In the packaging container, a flange part 11 or the flange part 11 and a skirt part 12 are provided on an outer peripheral edge 10 of a container body 1, a flange part 21 and a skirt part 22 are provided on an outer peripheral edge 20 of a lid 2, and a locking projection 22a which is abutted on and engaged with the flange part 11 or the skirt part 12 of the container body 1 to retain the lid 2 in a closed state is provided on an inner face of the skirt part of the lid 2. A projecting part 30 having an inverted V-shaped section is provided on an upper face of the flange part of the lid in a vicinity of the locking projection so that the inverted V-shaped one face 32 is integrally continuous to the skirt part 22 of the lid, and a projecting piece 23 for finger-hooking which is protruded substantially in the horizontal direction is integrated with the lid 2 on a lower end of the lid skirt part 22 in a vicinity of the locking projection. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a packaging container used when, for example, various foods are stored and sold, and in particular, a lid comprising a container body manufactured by thermoforming from a synthetic resin sheet and a lid covering the container body. It relates to a packaging container.

  Conventionally, in the packaging container as described above, it is common to provide some locking means or the like so that the lid body is not opened carelessly when the lid is put on the container body. FIG. 7 shows an example thereof. As shown in FIG. 7A, a flange portion 11 is provided on the outer peripheral edge portion 10 of the container main body 1 or on the outer side of the flange portion 11 as shown in FIG. While providing the downward skirt part 12, the outer peripheral edge part 20 of the cover body 2 is provided with a flange part 21 and a skirt part 22 which are substantially the same as described above, and the container body 1 is provided at a required position on the inner surface of the skirt part 22. The locking projection 22a and the like for holding the lid 2 in a closed state by abutting and engaging with the flange portion 11 or the skirt portion 12 are provided.

  However, when the container main body is in a shallow tray shape or dish shape when the engagement state of the locking projections or the like with respect to the container main body 1 is released and the lid body is opened, there is no need to grasp the container main body 1 It is often very difficult to release the engaged state. Therefore, in the following Patent Document 1, the present applicant previously formed a tongue piece whose tip protrudes in a U shape integrally with the outermost peripheral portion of the container body, and covered the lid on the container body. It has been proposed that the front end side of the tongue piece protrudes to the outside of the outermost peripheral portion of the lid body, and the tongue piece is elastically deformed and opened by pulling the tongue piece when the lid is opened.

  However, in the case where the tongue piece as described above is provided on the container main body, and a plurality of container main bodies are molded and punched out from a synthetic resin sheet having a predetermined size (so-called multiple picking is performed), In many cases, the tongue piece as described above cannot be provided at a desired position due to the arrangement of the mold cavity. Therefore, when punching out the molded product, it is necessary to form tongues on the skeleton part (the part that becomes scrap) that is not used as the container body. However, the balance on the design of the lid and the container body may be impaired, Even when the tongue piece can be provided at a good position, the tongue piece gives the impression that a foreign object protrudes from the container body, and there is a problem that the appearance is not always sufficient.

  Further, the present applicant previously formed a raised protrusion on the upper surface of the lid flange portion in the vicinity of the locking protrusion for preventing the lid from coming off in the following Patent Document 2, and the lid body in the vicinity of the locking protrusion. A finger hook ear is provided at the lower end of the skirt, and when the cover is opened, the thumb is placed on the raised convex portion, the finger hook ear is lifted upward with the index finger or the middle finger, and the locking protrusion provided in the vicinity of the finger hook ear Proposed to release the lid from the outer peripheral edge of the container body. However, when the lid is opened, the locking projection moves in a direction substantially perpendicular to the engagement direction (vertical direction) rather than moving in the engagement direction with the container body, that is, in the height direction of the locking projection. Since the engagement with the container body is released, if the engagement depth between the locking projection and the outer peripheral edge of the container body is large, it becomes difficult to disengage, and if the engagement depth is shallow, the lid is not prepared. There was a problem such as opening.

Japanese Patent No. 3009112 Japanese Utility Model Publication No. 62-177612

  The present invention has been proposed in view of the above-described problems, and an object of the present invention is to provide a packaging container that can easily and reliably cover and open the lid body with respect to the container body. There is. In addition, the shape of the lid can be a decorative accent on the design of the lid so that it does not feel uncomfortable, and even if the consumer wants to open the lid from the container body, he / she does not receive an explanation of the opening. An object of the present invention is to provide a lid opening structure that allows a lid to be removed from a container body by a naturally occurring operation (for example, an image similar to that when a pin is unplugged with a bottle opener).

  In order to achieve the above object, the packaging container according to the present invention has the following configuration. That is, a flange portion or a flange portion and a skirt portion are provided on the outer peripheral edge portion of the container body, and a flange portion and a skirt portion are provided on the outer peripheral edge portion of the lid body. In a packaging container provided with a locking projection that abuts and engages the flange or skirt to hold the lid in a closed state, an inverted V-shaped cross section is formed on the top of the lid flange near the locking projection. Is provided so that one surface of the inverted V-shape is continuous with the lid skirt portion, and projects substantially horizontally at the lower end of the lid skirt portion near the locking projection. A finger-hanging protruding piece is provided integrally with the lid.

  While pushing the convex portion of the inverted V-shaped cross section configured as described above toward the center of the lid with a thumb or the like, pulling the finger-hanging protruding piece upward with the index finger or the middle finger or both fingers, the above-mentioned The outer surface of the inverted V-shaped convex portion having the vertical rib and the lid skirt portion connected thereto rotate around the vicinity of the lower end of the inner surface of the inverted V-shaped convex portion. The locking projection for locking the lid provided in the vicinity of the lower portion is moved away from the outer peripheral edge of the container body with which it engages, i.e., the outer peripheral edge of the container main body retreats in the outward direction of the lid. Is released, and the lid can be easily released.

In addition, the present invention keeps a very good balance in design by projecting a part of the outer peripheral part of the lid upward and making the outermost peripheral part of the lid project substantially horizontally to form a finger rest. As such, it is possible to provide a packaging container in which the consumer can intuitively imagine the opening method and can easily open the lid.

  Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings. 1 is a plan view of a packaging container according to the present invention, FIG. 2 is a longitudinal sectional view thereof, FIGS. 3 (a) and 3 (b) are partially enlarged plan views and longitudinal sectional views thereof, and FIG. FIG. 5 is a perspective view of an essential part of a partially enlarged longitudinal sectional view in an opened state.

  The packaging container according to the present embodiment includes a tray-shaped or dish-shaped container body 1 and a lid 2 covering the container body 1, and each of them is thermoformed from a synthetic resin sheet, and in this example, is a plane substantially oval (elliptical). Is formed.

As the synthetic resin used for molding the container body 1 and the lid body 2, synthetic resins generally used for one-way packaging containers may be used as they are, for example, polystyrene, polyethylene terephthalate, polyethylene, polypropylene, polybutadiene. And the like, and biodegradable resins such as polylactic acid resin and other resins produced alone or in combination to produce a synthetic resin sheet can be used. As a composite method, a synthetic resin sheet made of laminated or mixed materials can be used. Even when laminated as a composite method or mixed, it is possible to add transparency if the refractive index of the resin is approximate.

  The synthetic resin sheet can be used either non-foamed or foamed. However, when foamed, transparency is often hardly obtained. Furthermore, the thickness of the synthetic resin sheet is preferably in the range of 0.15 mm to 3 mm. In particular, the range from 0.15 mm to 1 mm is a practical use range of a non-foamed or low-foamed sheet, and if it exceeds about 1 mm, the foamed sheet is generally represented by so-called PSP (polystyrene paper) excluding low foaming.

  As the thermoforming method, a method of forming a one-way packaging container from a normal synthetic resin sheet, for example, vacuum forming, pressure forming or the like can be used. Further, the type of synthetic resin and the thermoforming method are not generally required to be special, and any type and method may be used as long as the same functional effect can be obtained.

  The outer peripheral edge portions 10 and 20 of the container body 1 and the lid body 2 are respectively provided with flange portions 11 and 21 and outer skirt portions 12 and 22 and integrally with the container body 1 and the lid body 2. The flange portions 11 and 21 are formed on an inclined surface whose inner side is lower than the outer side in the present embodiment, but can also be applied to those formed flat in a substantially horizontal direction. .

  Then, on the inner surface of the skirt portion 22 of the lid body 2, there is provided a locking projection 22 a similar to the above-described conventional example that abuts and engages with the outer peripheral edge portion 10 of the container body 1 to hold the lid body 2 in the closed state. At the same time, an opening mechanism 3 for releasing the closed state by the locking projection 22a and opening the lid 2 is provided in the vicinity of the locking projection 22a. 2 is provided with the locking protrusion 22a and the opening mechanism 3 in the vicinity of both end portions in the longitudinal direction (major diameter direction) 2. In the case of the figure, each of the locking projections 22a is in contact with and engaged with the skirt portion 12 which is the outer peripheral edge portion of the container body 1. However, when the skirt portion 12 is not provided, What is necessary is just to make it contact-engage with the lower surface side of the part 11.

  Each unsealing mechanism 3 includes a convex portion 30 having an inverted V-shaped cross section provided continuously with the skirt portion 22 on the upper surface of the flange portion 21 of the lid body 2 in the vicinity of the locking projection 22 a, and the skirt portion 22. It consists of a finger-hanging protruding piece 23 that protrudes in a substantially horizontal direction provided integrally with the lower end thereof. The inverted V-shaped convex portions 30 are formed on the lid 2 from the vicinity of the outer surface 32 provided integrally and continuously above the skirt portion 22 and the upper end portion (the top portion of the convex portion 30) of the outer surface. It is comprised with the inclined surface 31 which inclines at an angle of about 45 degree | times with respect to the horizontal direction toward the edge part inside the flange part 21. As shown in FIG. Both end portions of the top portion of the convex portion 30 are closed by a substantially triangular surface 33 integral with the lid body 2.

  The outer surface 32 of the projection 30 and the skirt portion 22 of the lid body 2 connected to the convex portion 30 are provided with a plurality of (three in the illustrated example) reinforcing ribs 32a extending substantially in the vertical direction. The locking projection 22a is provided on the inner surface side of the skirt portion 22 in the vicinity of the lower end portion, and the finger-hanging protruding piece 23 is integrally provided at the lower end of the skirt portion 22 in the vicinity of the locking projection 22a. On the lower surface side of the projecting piece 23, there are provided anti-slip projections 23a that also serve as reinforcement (for preventing bending) ribs. This is a configuration in which a non-slip protrusion 23 a having a substantially planar arc shape that protrudes is provided.

  Note that reinforcing ribs similar to those of the outer surface 32 may be provided on the inclined surface 31 in a direction substantially parallel to the inclined direction, if necessary. Further, the top portion of the convex portion 30, that is, the corner portion formed by the outer surface 32 and the inclined surface 31, improves the feeling when pressing with a thumb as described later, and the top portion becomes thinner at the time of molding. In order to prevent crushing and deformation due to insufficient strength, it is preferable to form the film with appropriate rounding as shown in the illustrated example.

  When opening the lid that contains the contents in the packaging container configured as described above and is covered, for example, it may be opened in the following manner, and in particular, in the present invention, special operation instructions, instructions, etc. It can be opened easily even if there is no. That is, for example, when a general consumer tries to open a packaging container covered with the lid of the present invention, since there is no portion to be gripped on the container body side, the convex portion 30 of the present invention naturally formed on the lid and Attention is directed to the protruding piece 23. Further, the shape of the opening structure 3 of the present invention is reminiscent of an opening method such as a bottle opener, and it is conceived that the outer surface 32 and the protruding piece 23 of the protrusion 30 are naturally used as a part where a finger is applied for opening. The Then, the thumb that is easiest to work is applied to the top outer surface side of the convex portion 30, and the index finger or / and the middle finger, that is, the index finger or the middle finger or both are applied to the protruding piece 23 and bent upward of the lid 2. The lid can be opened very easily by the operation.

  More specifically, when a force is applied to both the thumb applied to the vicinity of the top of the convex portion 30 on the outer surface 32 side and the index finger or / and the middle finger applied to the protruding piece 23, The thumb force is applied along the inclined surface 31 of the convex portion 30 due to the positional relationship between the fingers, and the component force is a force applied horizontally in the container body direction and downward along the outer surface 32 of the convex portion 30. It becomes the power of. Further, the force applied from the index finger or / and the middle finger depends on the difference between the contact position between the thumb and the convex portion 30 and the lateral relative position where the index finger or / and the middle finger contacts the protruding piece 23 and the container body. 1 to the outward force, and further, the anti-deformation force of the convex portion 30 and the outer peripheral edge portion 20 generated by integrally forming the convex portion 30 and the outer peripheral edge portion 20 of the lid body 2 is pushed down. The convex portion 30 and the skirt portion 22 connected thereto are integrally deformed so that the locking projection 22a that prevents the main body 1 from coming off rotates toward the outside of the container main body 1, and the container main body 1 and the above-mentioned The engagement with the locking projection 22a is released, and the lid 2 can be detached from the container body 1 and opened.

  At this time, since the top of the protrusion 30 is formed higher than the outer peripheral edge 10 of the container body 1, the contact point between the thumb and the top and the index finger or / and the middle finger are in contact with the protruding piece 23. As the distance becomes longer, the moment of the force that moves the convex portion 30 to the outside of the container body 1 is increased, and the inclined surface 31 of the convex portion 30 is formed at about 45 degrees in the case of FIG. Or / and substantially parallel to the resultant direction of the force applied by the middle finger, the effect that the inclined surface 31 is difficult to bend as the direction of the force received by the inclined surface 31, and the reinforcing ribs are formed on the inclined surface 31. In that case, the effect is further enhanced.

  In practice, the force applied to the opening mechanism of the present invention is a much more complex combination of forces, but the main force has a large ratio of force elements in the direction described above, and the opening mechanism is as described above. The opening function is demonstrated by operation. In addition, as an effect of the present invention, it is possible to form an opening mechanism with a shape that is not uncomfortable in design on the lid body, and a user such as a general consumer can intuitively know how to open the lid body, and further the opening mechanism Because it can easily imagine the movement of the door, problems with opening due to unexpected movement can be avoided, and even though sufficient anti-separation effect can be obtained, opening can be performed with a smaller force .

  In particular, when the locking projections 22a and the opening mechanism 3 are provided in the vicinity of both ends in the longitudinal direction of a flat, substantially oval packaging container as in the embodiment of FIGS. Is applied to the outer surface of the convex portion 30 of each unsealing mechanism 3, and the protruding pieces 23 are pulled upward outward by the index finger or / and middle finger of the left and right hands, the inclined surface of each convex portion 30 31. With the lower end portion 31 as a fulcrum, the projections 30 and the skirt portion 22 and the locking projection 22a of the lid body 2 connected to the projections 30 and the protruding piece 23 are integrally rotated upward. The locking projection 22a is rotated upward while being separated from the container body 1 to be disengaged from the container body 1, and the container body 1 is automatically dropped by its own weight and engaged with the lid body 2. Is released and, as a result, the lid 2 is released, which is extremely simple and reliable. It is possible to perform the lid opening operation.

  In addition, although the said embodiment was applied to the flat substantially oblong packaging container, it is applicable also to the flat circular thing as shown in FIG. 6, or other arbitrary packaging containers. Moreover, although the said embodiment provided the latching protrusion 22a and the opening mechanism 3 in the major axis direction or diameter direction of the container, the arrangement position and the number are suitable, for example, it can also provide only one place or three places or more. Further, when a plurality of locking projections 22a are provided in one packaging container, it is not always necessary to provide the opening mechanism 3 corresponding to all the locking projections 22a, and only one of the locking projections is supported. Then, the opening mechanism 3 may be provided.

  As described above, according to the packaging container according to the present invention, it is possible to easily and quickly release the locking state of the lid body with respect to the container main body by the locking protrusion, with a simple operation, It can be released without displaying instructions, etc., and has the advantage that the operability of this type of container and the degree of freedom in selecting applications and designs can be greatly increased.

The top view which shows one Embodiment of the container for packaging by this invention. The longitudinal cross-sectional view of the said container for packaging. The enlarged plan view and longitudinal cross-sectional view of a part of the packaging container. The one part expanded vertical sectional view of the state which opened the cover body of the said packaging container. The expansion perspective view of the principal part of the said packaging container. The top view which shows other embodiment of the packaging container by this invention. The enlarged longitudinal cross-sectional view of a part of the conventional packaging container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container main body 2 Lid body 10, 20 Outer peripheral edge part 11 21 Flange part 12, 22 Skirt part 22a Locking protrusion 23 Protruding piece 23a Non-slip protrusion 3 Opening mechanism 30 Protruding part 31 Inclined surface 32 Outer side surface 32a Reinforcement rib

Claims (4)

A flange portion or a flange portion and a skirt portion are provided on the outer peripheral edge portion of the container body, and a flange portion and a skirt portion are provided on the outer peripheral edge portion of the lid body, and the flange portion of the container body is provided on the inner surface of the skirt portion of the lid body. Alternatively, in a packaging container provided with a locking projection that abuts and engages the skirt portion to hold the lid in a closed state,
A convex portion having an inverted V-shaped cross section is provided on the upper surface of the lid flange portion in the vicinity of the latching projection so that one surface forming the inverted V-shape is continuous with the lid skirt portion, and A packaging container, wherein a finger-hanging protruding piece that protrudes in a substantially horizontal direction is provided integrally with the lid at the lower end of the lid skirt near the protrusion.   The inverted V-shaped convex portion is inclined at an angle of about 45 degrees from the outer surface continuous to the lid skirt and from the vicinity of the upper end of the outer surface toward the inner edge of the lid flange. The packaging container of Claim 1 comprised by the inclined surface.   The packaging container according to claim 1, further comprising a reinforcing rib extending in a substantially vertical direction over the lid skirt portion and the outer surface of the convex portion provided integrally therewith above the lid skirt portion.   The packaging container according to any one of claims 1 to 3, wherein a non-slip protrusion serving also as a reinforcing rib is provided on a lower surface of the finger-hanging protruding piece.

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