JP2006082827A - Lid for food container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent contents from splashing out when opening a food container containing yogurt or the like. <P>SOLUTION: A lid for a food container includes an upper layer lid material 10 unsealably fixed to the outer periphery of an opening 2 to entirely cover the opening of a container body 1 having the opening 2 on an upper part and a lower layer lid material 20 located under the upper layer lid material, covering at least an opening region in a range close to a portion 15 expected to start unsealing of the upper layer lid material 10 in the opening region of the opening and fixed to the outer periphery of the opening so that an opening region separate from the portion expected to start unsealing is opened as a content outlet 25. The contents can be effectively prevented from splashing out when the upper layer lid material is opened, and the contents can be easily taken out through the outlet 25. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention accommodates a fluid viscous material such as yogurt through an opening, seals the opening with a lid, and opens the lid when the fluid viscous material is needed. The present invention relates to the lid material suitable for a flowable viscous material container from which the viscous material can be taken out.

  A material having fluidity such as yogurt is accommodated in a container having an opening at the top, and the opening is sealed with a lid, and is used for transfer, storage, and the like. The lid member is fixed to the container by thermal bonding or the like at the time of sealing, and is configured to be peeled off as necessary to open the opening.

FIG. 9 shows an example of the container. A yogurt or the like that is a fluid viscous material is accommodated as a content 50 in a container body 40 such as a bottomed cylindrical plastic through an upper opening 41. A flange 42 is provided on the outer peripheral edge of the opening 41, and a lid member 45 that covers the opening 41 is thermally bonded via the flange 42. The lid member 45 can be opened, and a tab 46 for gripping can be provided on the lid member 45 in order to facilitate opening. The said container is widely utilized as what accommodates foodstuffs, such as yogurt, and the thing in which the device for peeling was made easy etc. was proposed (for example, refer patent document 1).
Japanese Patent Laid-Open No. 8-91437

  In the above-mentioned container, yogurt or the like is circulated in a sealed state, and when the contents are taken out, the lid is peeled off and opened. By the way, if the contents are hardened when opened (hard type) like conventional yogurt, there is no particular problem, but the soft state that has been in circulation recently (soft type) However, the yogurt has a problem that the contents easily pop out when the lid is opened. This phenomenon will be described in detail with reference to FIG. In a container containing a soft type yogurt or the like, the container tilts or shakes in the course of distribution, etc., and the contents 50a adhere to the edges of the opening 41 and the corners of the lid 45 and adhere due to its viscosity. It tends to remain (FIG. 10A). If the container is held by hand in order to take out the contents from the container, the container is deformed to some extent and the internal pressure is increased (FIG. 10 (b)). When the container lid 45 starts to be peeled in a state where the internal pressure of the container has increased, the air inside the container whose internal pressure has increased is released to the outside at once, and the contents adhering to the corners of the opening 41 accordingly. 50a is easily released to the outside (FIG. 10C). The content 50a popping out may contaminate the surroundings, and it is preferable that the content jumping out is completely prevented.

  The present invention has been made against the background of the above circumstances, and an object of the present invention is to provide a food container lid that prevents the contents from popping out when the fluid viscous container is opened.

  That is, among the lids for food containers according to the present invention, the invention according to claim 1 is an upper lid that covers the entire opening of the container body having an opening at the top and is fixed to the outer periphery of the opening so as to be openable. And a lower layer of the upper cover material, covering at least an opening region in a range near the opening start scheduled portion of the upper cover material among the opening region of the opening, and separated from the opening start scheduled portion And a lower layer lid member fixed to the outer periphery of the opening so as to keep the opening region open as a content outlet.

  The invention for a food container lid according to claim 2 is characterized in that, in the invention according to claim 1, the contents outlet is composed of 30% or more of the opening area of the opening in area ratio.

  The invention for a food container lid according to claim 3 is the invention according to claim 1 or 2, wherein the contents take-out port is formed on the end of the lid facing the opening start scheduled portion. It has the shape which continues to a periphery.

  The invention for a food container lid according to claim 4 is the invention according to any one of claims 1 to 3, wherein the lower layer lid material has a distance exceeding at least 5 mm from the planned opening start end. It has the shape which covers the said opening area | region over it.

  The invention for a food container lid according to claim 5 is the invention according to any one of claims 1 to 4, wherein the scheduled opening start end portion is a handle tab provided on the upper layer lid material. It is a connecting part.

  The invention for a food container lid according to claim 6 is the invention according to any one of claims 1 to 5, wherein the content take-out port has a tapered shape toward the scheduled opening start side. It is characterized by.

  The invention for a food container lid according to claim 7 is the invention according to any one of claims 1 to 6, wherein the lower layer lid has a shape that covers a part of the opening region by an arch shape, The arch-shaped continuous portion side is located on the opening start scheduled portion side, and the arch-shaped discontinuous portion is located on the content outlet side.

  According to this invention, the container main body can seal the whole opening part by the upper-layer cover material in the state which accommodated and hold | maintained the content in the container. At least in the vicinity of the opening start scheduled portion of the upper layer cover material, the lower layer cover material can be located in the lower layer of the upper layer cover material to cover a part of the opening, and in the region covered with the lower layer cover material, the contents are It contacts only the lower surface side of the lower layer cover material without contacting the upper layer cover material. Therefore, even when the contents adhere to the corners of the lid material and the opening due to the circulation of the container, the contents are attached to the lower layer lid material in the vicinity of the opening start scheduled portion.

  In this state, when opening the upper layer cover material from the opening start scheduled portion, the opening portion is maintained in a sealed state since the lower layer cover material is initially positioned. If the unsealing is continued, the amount of peeling of the upper layer cover material gradually increases, and finally the opening is opened without the lower layer cover material being positioned. With this opening, the internal pressure increased by the grasping of the person who opens it is released, and a part of the internal air is released to the outside. This open position is far from the vicinity of the opening start scheduled portion, and there is little possibility that the contents are attached to the lid member at the open position. Therefore, the contents are prevented from jumping out when the internal air is released. Then, the contents can be taken out through the contents take-out port exposed by peeling off the upper-layer cover material.

  The contents contained in the container body sealed with the food container lid according to the present invention can be representatively shown as yogurt as described above. However, the present invention can be applied to other fluid viscous materials. Examples of the fluid viscous material include those that flow due to tilting or shaking of the container and easily adhere to the corners of the lid and the opening due to the viscosity.

  The container main body for storing the fluid viscous material is required to have an opening in the upper part, but the shape of the container main body is not limited to a specific one. Various shapes such as a shape and a rectangular tube shape can be employed. In addition, the shape of the opening is typically a circle, an ellipse, or a polygon. However, the present invention is not limited to a specific shape, and the opening can be accommodated and taken out. That's fine.

  Also, the opening start scheduled portion of the upper layer cover material corresponds to a portion where the upper layer cover material is easily peeled off assuming opening and a portion on which an instruction for opening is given. In order to make it easy to peel off the upper layer cover material, a tab for gripping may be provided on the upper layer cover material, or measures to weaken the adhesive force to the outer periphery of the opening of the upper layer cover material at the opening start scheduled part may be taken. it can.

In addition, the material of the container main body, the upper layer lid member, and the lower layer lid member is not particularly limited, and the means for fixing to the outer peripheral edge of the opening of the upper layer lid member and the lower layer lid member is not particularly limited.
For example, the upper layer cover material can be formed of a combination composite product or a single component of a plastic film such as PET (polyethylene terephthalate) or NY (nylon) and aluminum foil or paper.

The lower layer cover material can be formed of, for example, a combined composite product or a single component product of a plastic film such as PET or NY and an aluminum foil or paper.
In addition, a sealant layer can be provided around the opening, and the sealant is selected according to the material of the container. For example, it can be composed of a simple substance such as PE resin, PP resin, EVA resin, acrylic resin, or a blend of two or more.

  The upper layer cover material and the lower layer cover material can be laminated with an adhesive resin. When using the adhesive resin, for example, an extrusion laminator can be used to supply adhesive resin such as PP (polypropylene) resin or PE (polyethylene) resin to the upper and lower lid materials in a molten state, thereby bonding the lid materials.

  Further, an easy-opening layer that facilitates opening of the upper-layer cover material can be provided between the upper-layer cover material and the lower-layer cover material. The release layer can be shown as an example. In order to peel between the release layer and the adhesive resin layer, a resin that is weakly bonded (30 to 300 g / 15 mm) is selected. Examples include modified PE resin, acrylic resin, EVA (ethylene vinyl acetate copolymer) resin, polyester resin, and the like.

  As described above, the lower layer lid member is disposed so as to cover the opening region in a range close to the opening start scheduled portion. The range close to the opening start scheduled portion is desirably a distance exceeding 5 mm. Within 5 mm, there is no sufficient distance from the contents attached to the corners when the upper lid is opened, and it becomes difficult to sufficiently prevent the contents from scattering.

The opening area of the opening excluding the range covered with the lower layer cover material is assigned to the content outlet. It is desirable that the content outlet has an area ratio of 30% or more of the entire opening area so that the content can be easily taken out. It is desirable that the content outlet is connected to the peripheral edge of the opening on the end side facing the opening start scheduled portion without interposing the lower layer cover material. Thereby, the contents can be easily taken out without being interfered by the lower layer cover material. As an example of securing the content take-out port, a mode in which the region covered with the lower layer cover material is an arch shape can be exemplified.
In addition, what is formed in the state which accommodated the content and the taking-out port may be formed with peeling of the upper-layer cover material.

  As described above, according to the lid for food containers of the present invention, the upper lid that covers the entire opening of the container body having an opening at the top and is fixed to the outer periphery of the opening so as to be openable; An opening region that is in a lower layer of the upper layer cover material, covers at least an opening region in a range close to the opening start scheduled portion of the upper layer cover material among the opening region of the opening portion, and is spaced apart from the opening start scheduled portion It is provided with a lower layer cover material fixed to the outer periphery of the opening so as to be opened as a content take-out port, so that it is effective for the contents to pop out when the upper layer cover material is peeled and the container body is opened. The contents can be easily removed through the contents outlet.

  In addition, it becomes easier to take out the contents by setting the content outlet to be 30% or more of the opening area of the opening in the area ratio.

  Moreover, if the said content take-out port shall be connected to the periphery of the said opening part on the cover material edge part side facing the said opening start scheduled part, taking out of a content will become still easier.

  Further, if the lower layer cover material covers the opening region over a range having a distance exceeding at least 5 mm from the planned opening start end, the contents attached to the corners are the upper layer cover material. It is possible to more reliably prevent popping out with the opening.

  Moreover, if the said content extraction opening shall have a taper shape toward the said opening start scheduled edge part side, an internal pressure will be open | released more smoothly at the time of opening of an upper-layer cover material.

Below, one Embodiment of this invention is described based on FIGS.
As shown in FIG. 1, the container body 1 made of plastic with a bottomed quadrangular cylindrical shape has an opening 2 with an upper end opened, and a flange 3 is formed on the outer peripheral edge of the opening. Yes.

As shown in FIG. 2, the food container lid material has a structure in which an upper layer lid material 10 and a lower layer lid material 20 are vertically stacked, and the upper layer lid material 10 has a substantially rectangular shape along the outer periphery of the flange 3. It has an outer peripheral shape, and a grip tab 15 is provided at one corner.
On the other hand, the lower layer cover member 20 has a substantially rectangular outer peripheral shape along the outer periphery of the flange 3 as in the upper layer cover member 10 as shown in FIG. The lower lid member 20 is provided with a hole that constitutes a substantially triangular content outlet 25 having a vertex on the side of the upper lid member 10 that faces the side where the tab 15 is located. The contents take-out port 25 has a shape in which two sides on the edge side are along the periphery with a slight distance from the periphery of the opening 2.

Specifically, as shown in FIG. 3, the upper lid material 10 includes a PET layer 11 having a thickness of 12 μm from the upper layer, an aluminum vapor-deposited PET layer 12 having a thickness of 12 μm and a PE layer 13 having a thickness of 30 μm. It can be constituted by a laminated structure. On the other hand, as shown in FIG. 3, the lower layer cover member 20 has a structure in which a release layer 21 made of a modified PE resin from the upper layer, a paper 22 of 100 g / m ^{2 serving} as a lower layer cover member base material, and a PET 23 having a thickness of 12 μm are laminated. Consists of.

The upper cover material 10 and the lower cover material 20 are bonded to each other through a PE resin melted by an extrusion laminator or the like, so that an adhesive resin layer 30 having a thickness of 20 μm is formed therebetween.
In the bonded upper layer cover material 10 and lower layer cover material 20, a sealant layer 35 made of PE resin having a thickness of 40 μm is formed on the lower surface side in a bonded state.

  As shown in FIG. 4, the upper layer lid member 10 and the lower layer lid member 20 are disposed on the flange 3 of the container main body 1 containing the contents 50, and the upper layer lid member 10 covers the entire opening 2. Is bonded to the surface of the flange 3 while being covered. Note that the content outlet 25 of the lower lid member 20 is closed by the sealant layer 35 when the container body 1 is sealed with the lid material by the formation of the sealant layer 35. FIG. As shown in (b), when the upper layer lid member 10 is opened, it is sheared and pulled up together with the upper layer lid member 10 in an area where the lower layer lid member 20 is not provided, and the content takeout port 25 is secured. In the following, for the sake of convenience, the description will be made with reference to the figure in which the content outlet 25 is formed even before opening.

  In the food container, the contents 50 flow due to the distribution process or the like, and the contents 50a are attached to the corners of the opening and the lid as shown in FIG. When opening the upper cover 10 of the container as shown in FIG. 6, the upper cover 10 is peeled off while the lower cover 20 remains fixed to the container body 1. When the peeling of the upper layer cover material 10 reaches an area not covered with the lower layer cover material 20, the opening 2 of the container body 1 is exposed, the internal pressure in the container body 1 is released, and a part of the internal air is externally exposed. To be released. At this time, since the deposit 50a does not exist in the vicinity of the open portion, it is possible to prevent the deposit from being released to the outside by the released air. When the upper layer lid member 10 continues to be peeled off, the content outlet 25 that is not covered with the lower layer lid member 20 is exposed. The contents 50 can be taken out from the contents take-out port 25 using a spoon or the like.

Next, FIG. 7 shows an example of changing the shape of the lid for food containers. In this embodiment, the opening 2 of the container body is covered with an arch shape by the lower layer cover material 20a, and the content take-out port 25a is continuous with the peripheral edge of the opening 2a at the inner peripheral end of the flange 3a. In the vicinity of the tab 15a of the upper layer lid member 10a, the lower layer lid member 10a has a width exceeding 5 mm from the edge of the opening near the tab 15a.
In this form, when the contents are taken out, the periphery of the opening 2 can be used so as not to interfere with the lower layer cover material 20a, and the taking out becomes easy.

  FIG. 8 further shows a modification of the food container lid. Various shapes of lower layer cover materials 20b, 20c, 20d, and 20e with content take-out ports 25b, 25c, 25d, and 25e are proposed. Among these, the content take-out ports 25c and 25d have a tapered shape toward the opening start scheduled portion, and are easy to open and prevent the content from popping out more reliably. In addition, the lower layer lid member 20e is provided with a small hole 26 for releasing air on the opening start scheduled portion side from the content takeout port 25e. In this form, when opening, since air is vented before opening, the release of the contents accompanying the release of the internal pressure is more reliably prevented. This air vent hole can also be applied to the lid material of other embodiments.

  As mentioned above, although this invention was demonstrated based on said each embodiment, this invention is not limited to said embodiment, In the range which does not deviate from the scope of the present invention, a change is possible.

It is sectional drawing which shows the container main body in which the cover material for food containers of one Embodiment of this invention is used. Similarly, showing one embodiment of the present invention, (a) is a plan view of a state in which an upper cover material and a lower cover material are laminated, (b) is a plan view of an upper cover material alone, (c). FIG. 4 is a plan view of the lower layer lid member alone. Similarly, (a) is an enlarged cross-sectional view showing a state in which an upper-layer cover material and a lower-layer cover material are laminated, and (b) is an enlarged cross-sectional view showing a state in which the upper-layer cover material is peeled off. Similarly, it is a front view which shows the state which covers the opening part of a container main body with a cover material. Similarly, it is the front sectional view showing the state where the contents have adhered to the corner of the opening in the container containing the contents. Similarly, it is a figure which shows the state at the time of opening the container which accommodated the content. It is a figure which shows the cover material for food containers in other embodiment of this invention. Similarly, it is a figure which shows the example of a change of the cover material for food containers. It is front sectional drawing which shows the conventional container structure. Similarly, it is a figure which shows the state at the time of opening the container which accommodated the contents.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container main body 2 Opening part 3 Flange 10 Upper layer cover material 15 Tab 20 Lower layer cover material
25 Contents outlet 50 Contents 50a Contents

Claims (7)

  An upper layer cover material that covers the entire opening of the container body having an opening at the top and is fixed to the outer periphery of the opening so as to be openable; and a lower layer of the upper layer cover material, Adhering to the outer periphery of the opening so as to cover at least the opening area in the range close to the opening start scheduled portion of the upper cover material and to open the opening area separated from the opening starting scheduled portion as a content outlet A food container lid material comprising: a lower layer lid material.   2. The food container lid according to claim 1, wherein the content take-out port comprises 30% or more of the opening area of the opening in an area ratio.   3. The food container lid according to claim 1, wherein the contents take-out port has a shape that is continuous with the periphery of the opening on the side of the lid material opposite to the opening start scheduled portion.   The said lower layer cover material has a shape which covers the said opening area | region over the range which has the distance which exceeded at least 5 mm from the said opening start scheduled edge part, The foodstuff in any one of Claims 1-3 characterized by the above-mentioned. Container lid.   The food container lid material according to any one of claims 1 to 4, wherein the opening start scheduled end portion is a connection portion with a grip tab provided on the upper layer lid material.   The food container lid according to any one of claims 1 to 5, wherein the content take-out port has a tapered shape toward the opening start scheduled end portion side.   The lower-layer lid member has a shape that covers a part of the opening region by an arch shape, the continuous portion side of the arch shape is located on the opening start scheduled portion side, and the discontinuous portion of the arch shape is a content outlet It is located in the side, The lid | cover material for food containers in any one of Claims 1-6 characterized by the above-mentioned.

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