JP4955052B2 - Packaging container for folding and opening - Google Patents

Description

  In the present invention, a substance having flowable properties including liquid, jelly-like substance, powder / granular substance, etc. is accommodated in a container, and an opening is formed in the container by folding the container. The present invention relates to a small container in which contents are pushed out from an opening.

  More specifically, for example, butter, margarine, mayonnaise, dressing, ketchup, jam, marmalade, mustard, honey, liquid / kneaded or powdered pepper or wasabi, soy sauce, miso and other foods, shampoo, rinse, liquid / powder Toiletries such as soap, milky lotion, mucous / liquid lotion, skin lotion, hand lotion, cleansing cream, sunscreen cream, and other small amount of substances used alone or in two types The present invention relates to a small container that can be used in one-touch by packaging appropriate amounts of three, four, etc. substances that can be used at the same time and combining them appropriately according to the intended use.

  A small amount of such a small amount of material is formed by holding the container with a finger and bending it to form an opening in the container and to easily extract the contents contained from the opening with a single touch. Bending and opening containers are already generally known. In particular, a container in which jam and butter to be applied to toast are individually stored in two separate chambers and these contents are simultaneously extruded from the opening during use is already known. ing.

  The one-touch extraction container for contents having such a structure is known as shown in Patent Documents 1 and 2 and Non-Patent Document 1 shown below. The technologies described in these documents were all applied in 1985-62, and all of them were subsequently registered as patents or utility models, but now the rights have already expired due to the expiration of the period. Yes.

  Thus, each of the packages described in these prior documents = Patent Documents 1 and 2 and Non-Patent Document 1 = has a relatively hard flat first sheet and a sealed sachet for containing a fluid substance. Each of which has a flexible second sheet, and is cut into the first sheet to a depth of about one-half the thickness as a means for breaking the sheet. A half cut line is formed, and a ridge for forming a content extrusion opening having a rhombus shape in plan view is formed across the fracture line. .

JP 61-104973 A JP 63-162460 A

Japanese Utility Model Publication No. 3-1419

  However, when these types of containers, including those prior known techniques, are subsequently filed and published, such as patents, all of them are rigid, flat Most of the first sheets have a structure in which a half-cut line for breaking reaching about half of the sheet thickness is formed. In order to make this half-cut incision, a considerably high precision processing technique is required, and a processing process for that purpose is required. Further, since the rhombic protrusion-like raised portion requires a continuous half-cut line for breakage, the structure requires a further advanced precision machining technique.

  As described above, most of the prior art has a structure of a container that requires a high-precision processing technique and a processing step necessary for that, and therefore has a problem in reducing the container manufacturing cost. I paid attention to.

  Therefore, the present invention eliminates the formation of the half-cut line for breaking, which is an essential structure of these prior arts, so that the precision machining technique necessary for this purpose and the formation of the half-cut line are provided. However, it is possible to reliably perform a linear folding operation at a predetermined location equivalent to the container in which the half cut line is formed, and this folding operation can open the container (the container opening part). The present invention is intended to provide a folding and unsealing packaging container having a structure capable of reliably performing opening of the above.

  More specifically, in the present invention, a hard plate-like lid that is one of the components constituting the folding and opening packaging container is formed of any one of PET resin, PS resin, PLA resin, and PP resin. It is a requirement to do. Among these, PET resin is excellent in heat resistance (thermal deformation temperature 240 ° C.), excellent in cold resistance (−60 ° C.), good in transparency, excellent in chemical resistance, oil resistance and solvent resistance, It has excellent gas barrier properties, and has the great feature that no harmful gas is emitted even if the waste material is burned. As a disadvantage, it has the property of being brittle by itself. Further, even in the case of PS resin, PLA resin, and PP resin, there is an advantage that there is no inconvenience because it has chemical resistance and is not harmful even when discarded.

  The present invention pays attention to these matters, and particularly pays attention to the fact that these resins commonly have the property of being brittle as a single unit, and as a result of forming various prototypes, It has been found that when a resin sheet is extruded and formed with these materials and stretched only in one direction, the longitudinal direction or the width direction, the sheet is easily broken along the stretched direction. Therefore, the present invention has sought to utilize this property positively and to take advantage of it, and as a result, has developed a container of the present invention having a completely new structure.

  In the present invention, by actively utilizing the defects possessed by the specific resin having the found properties, it is possible to form a half-cut line for fracture, which is an essential technical structure in all of the prior art, and The formation of a folded unsealed container having the same ease of use and certainty as the prior art container has, which completely eliminates the above-mentioned problems associated therewith, is difficult with the prior art. We propose a container with a structure that can reduce costs.

In order to achieve this object, the first configuration of the folding and opening packaging container according to the present invention includes a substantially flat lid 1 made of a hard resin, and a package accommodation chamber 20 fixed to one surface thereof. A packaging body in which an opening is formed by a bending operation, and the container body 2 includes a packaging product storage chamber 20 bulged with a flexible sheet. The peripheral portion 21 of the chamber 20 is fixed to the lid 1, and the lid 1 is formed with a predetermined thickness of PET (polyethylene terephthalate) resin, PS (polystyrene) resin, PLA (polylactic acid) resin, PP (polypropylene). ) A sheet material 10 obtained by unidirectionally stretching any one of the sheets of resin, wherein the extending direction of the sheet material 10 is formed along the folded opening portion 11 of the lid 1, and the folded opening portion 11 has a half-cut line It is obtained by a structure with Te standing city.

The second configuration according to claim 2 includes a substantially flat lid body 1 made of hard resin and a container body 2 provided with a packaged article storage chamber 20 fixed to one surface thereof. A packaging container in which an opening is formed, the container body 2 includes a packaged product storage chamber 20 bulged with a flexible sheet, and a peripheral portion 21 of the storage chamber 20 is fixed to the lid 1. The cover 1 is a sheet obtained by unidirectionally stretching a sheet of PET (polyethylene terephthalate) resin, PS (polystyrene) resin, PLA (polylactic acid) resin, or PP (polypropylene) resin formed to a predetermined thickness. It is the raw material 10, Comprising : The extending | stretching direction of this sheet | seat raw material 10 is formed along the bending opening part 11 of the cover body 1, a half cut line does not exist in this bending opening part 11, and the said container main body 2 Of the forming resin and the lid 1 A synthetic resin, in which a structure that is formed of the same resin material.

  Moreover, the structure of Claim 3 is a structure subordinate to the packaging container for folding opening of Claim 1 or 2, Comprising: Except for the folding opening part 11 of the cover body 1, this bending opening part 11 is formed with a notch 12 or a punched hole 13 for positioning the bent portion of the lid 1 on one side or both sides of the side edge portions a and b in the width w direction of the container passing through 11.

  The packaging container for folding and opening referred to in the present invention is a sheet material obtained by unidirectionally stretching a PET resin sheet, for example, as a material for forming a substantially flat lid made of hard resin, which is a component of the container. Since the extending direction of the lid is arranged along the folded opening portion of the lid body, the lid body is easily broken along the extending direction by applying a bending external force. There is no need to form a breaking half-cut line for forming. For this reason, as in the case of a container having a half-cut line for breaking, the opening can be reliably opened by simply folding the lid in a folded shape with the fingertip, and the container is folded following this operation. It has the effect that the contents can be pushed out and used from the opening by a continuous one-touch operation of compressing in the bending direction. Moreover, there is an effect that such a one-touch extraction container for contents can be mass-produced at low cost.

  At the same time, the lid according to the present invention is excellent in heat resistance and cold resistance, excellent in chemical resistance, etc., excellent in transparency, excellent in gas barrier properties, and may cause leaching of harmful substances from the container to the contents. Since the confirmation of the type and state of the contents can be visually recognized from the outside, there is an effect that the contents in the container can be purchased and used with confidence. On the other hand, since it does not emit harmful substances even if it is discarded and burned, it has the effect that it can be discarded as combustible waste.

  Further, in the container according to claim 2, since the forming resin of the container main body and the forming resin of the lid body are formed of the same resin material, the fusion between these container main body and the lid body is performed. For example, it can be directly and reliably heat-bonded by means of easy handling such as high-frequency and electromagnetic waves without using a low-melting thin film such as polyethylene or an adhesive film such as hot melt, so that productivity can be further improved. It has the effect of being able to. Moreover, since the whole is formed of the same kind of material, there is an advantage that it is easy to separate and discard at the time of disposal.

The longitudinal cross-sectional view which shows the cover body side of the container of this invention. The top view of the container. The front view of the container. AA line sectional view shown in FIG. The perspective view which shows the shaping | molding state of a raw material sheet | seat and a cover body. The perspective view which shows the molding state of another raw material sheet | seat and a cover body. The front view which shows the use condition of a container. The top view equivalent to FIG. 2 of the container of 2nd Example. The top view equivalent to FIG. 2 of the container of 3rd Example. The top view equivalent to FIG. 2 of the container of 4th Example. The top view equivalent to FIG. 2 of the container of 5th Example.

  In carrying out the present invention, the material for forming the lid is used by selecting a sheet formed of any one of PET resin, PS resin, PLA resin, and PP resin as described above. Immediately after the sheet is extruded from the resin extruder, a sheet that has been stretched in a direction parallel to the extrusion direction or a direction orthogonal to the extrusion direction is used, or the sheet extruded from the extruder is once drum-wound. What is necessary is just to perform appropriately whether it uses the sheet | seat which rewinded the thing at the time of use and gave the extending | stretching process while heating, and can employ | adopt in any case.

  Further, the lid body described here can be implemented by adopting a thin sheet and applying a process like a reinforcing rib to increase the bending strength in the rib forming direction. It can also be implemented as a flat shape that is not applied at all.

  Embodiments of the present invention will be described below with reference to FIGS. The packaging container C for folding and opening shown in the embodiment is a sheet material formed of a generally known PET (polyethylene terephthalate) resin, and is stretched only in one direction as shown in FIG. 5 or FIG. Used as the applied sheet 10. The sheet 10 illustrated in FIG. 5 is a sheet that is stretched only in the longitudinal direction of the sheet 10 as indicated by an arrow L, and the sheet 10 illustrated in FIG. Each of the sheets is subjected to stretching processing only in the width direction. As the sheet itself before stretching described here, a sheet having a hardness having a resilience restoring force against a bending external force is adopted. Moreover, the extending | stretching process here refers to what was extended about 2 to 3 times the sheet | seat before a process. This value is a preferable value obtained through experiments, but is not a limit value indicating the scope of rights. As for the thickness of the sheet | seat 10 after an extending | stretching process, the thickness of about 0.5-1.2 mm is suitable for use, for example.

  Thus, when the lid of the container is provided with a rib, the sheet 10 is fed between press-heating molds (not shown), and the rib r of the lid 1 is formed while being heated. As shown in FIG. 5, in the case of the sheet 10 that has been stretched in the longitudinal direction (L direction) of the sheet, the width w direction of the lid 1 is formed along the sheet stretching direction. The ribs r of a large number of lids 1 are formed by feeding between molds, in other words, by feeding between molds formed so as to be orthogonal to the width direction of the sheet 10. Further, a large number of lids 1 are punched out and formed into individual pieces simultaneously with the rib forming or by post-processing.

  As shown in FIG. 6, in the case of the sheet 10 that has been stretched in the width direction (W direction) of the sheet, the gold formed so that the width w direction of the lid 1 is along the width direction of the sheet 10. By feeding between the molds, a large number of ribs r of the lid body 1 are formed, and a large number of the lid bodies 1 are punched and formed into individual pieces simultaneously with the rib forming or by post-processing.

  As shown in FIGS. 1 and 2, the container lid 1 formed in this way has a horizontally long rectangular shape in plan view, a long rib r1 at the center in the width w direction, and long on both sides in the width direction. This is a substantially flat plate body in which three reinforcing ribs r, which are short ribs r, r, are formed along the width direction of the lid body 1. Further, in the lid body 1 of this embodiment, cuts 12 and 12 having a triangular shape in plan view are formed at both side edge portions a and b in the width direction of the intermediate portion in the longitudinal direction.

  The container main body 2 is a sheet material made of PET resin formed in a flexible state as an extremely thin film, and is formed by bulging the package accommodation chamber 20 as seen in FIGS. The required contents are put in the storage chamber 20, and the outer peripheral edge portion 21 and the partition seal portions c and d extended to a position close to the central portion of the long rib r1 formed at the intermediate portion in the width direction. Thus, the lid 1 is fused and sealed to the back side. The fused portions of both bodies 1 and 2 are shown by cross lines in FIGS.

  Since the container C having such a structure is formed so that the width w direction of the lid 1 is along the extending direction of the material sheet 10, both ends in the longitudinal direction are placed at the fingertips during use, that is, when the contents are taken out. And when the container is folded into a “<” shape in the direction in which the outer surface protrudes, the longitudinal intermediate portion of the container positioned by the triangular notches 12, 12 is snapped and the container body 2 is not fused. The opening part 11 planned in the middle part in the longitudinal direction of the rib r1 is broken and opened. As indicated by the arrows in FIG. 7, the contents can be pushed out from the opening O and used by a one-touch operation in which the container is further continuously compressed in the folding direction in this state. The operation for taking out the contents is the same as the conventional product.

  Thus, in the container C shown in the embodiment, the packaged product storage chamber 20 swelled and formed in the container main body 2 has a right passage and a left passage as shown in FIG. 22 is shown as having a structure that is communicated at 22 and is substantially one pocket. Therefore, in the case of food, this container can be conveniently used to store one kind of commodity such as butter and dressing. However, even in this container, the left and right chambers 20, 20 can be used as separate products such as butter and jam, mustard and ketchup.

  8 to 11 show an embodiment in which each has a different structure. The container C of the second embodiment shown in FIG. 8 is a container in which packaged product storage chambers 20, 20 indicated by chain lines are bulged on the left and right sides of the container body 2, and the width direction of the container Are provided with two chambers, each of which is partitioned by a partition seal portion e that is continuous with each other, and each of which is an independent chamber. The lid 1 of the container C is formed in a diagonally symmetrical shape, and has five long ribs r2 formed in a length exceeding the intermediate portion in the longitudinal direction of the container and four ribs r formed in parallel. Ribs are formed corresponding to the two packaged product storage chambers 20, 20. In this way, during use, the folded opening portions 11 and 11 in which the long ribs r2 and r2 are formed in the middle portion in the longitudinal direction of the container are broken to form an opening. The lid 1 of the container is formed with U-shaped cuts 12 and 12 in the widthwise side edges a and b of the middle portion in the longitudinal direction, and the cuts 12 and 12 open the opening. It is designed to be positioned.

  In the container C of the third embodiment shown in FIG. 9, the packaging product storage chambers 20, 20 indicated by chain lines in the left and right portions in the drawing are formed to bulge and correspond to the positions of these packaging product storage chambers 20, 20. Grinding ribs r3 and r3 having a small width in the left-right direction and a large width in the central portion are formed on the corresponding portion of the lid body 1 in a diagonally symmetrical manner. Further, in the lid 1 of the container, punching holes 13 and 13 having small widths are formed in the outer portions of the ribs r3 and r3 in the widthwise side edge portions a and b of the intermediate portion in the longitudinal direction. It is. These punched holes 13 and 13 also have the effect of reducing the bending resistance as compared with other parts, and these punched holes 13 and 13 determine the formation positions of the folded opening portions 11 and 11 at the time of use. It is made to let you.

  In the container C of the fourth embodiment shown in FIG. 10, a packaged product storage chamber 20a indicated by a chain line is formed on the right side in the figure, and the left side contains two packaged products divided into two in the vertical direction in the figure. This is a container in which the chambers 20b and 20b are formed. On the lid 1 of the container C, a long rib r4 and a short six ribs r are formed in parallel in the vertical middle part on the right side of the figure so as to extend beyond the middle part in the container longitudinal direction. At locations corresponding to the two packaged product storage chambers 20b, 20b formed on the left side, there are long ribs r41, r41 formed in a length exceeding the middle part in the container longitudinal direction and short ribs r above and below them. Has a structure in which one is formed in parallel to one. Reference numeral 12 in the figure denotes U-shaped cuts in a plan view formed at both ends in the width direction of the container.

  The container C of the fifth embodiment shown in FIG. 11 is replaced by two packaged product storage chambers 20b and 20b formed on the left side of the container C of the fourth embodiment shown in FIG. This is a container having a structure in which the sizes of the chambers are uneven, the area of the upper storage chamber 20c in FIG. 11 is large, and the area of the lower storage chamber 20d is small. The description of other points is based on the description of other embodiments.

Although the illustration of the container according to the present invention is omitted, it can be implemented as a container having a large number of packaged product storage chambers 20 such as four chambers and five chambers if necessary. Moreover, although the container shown to the above each Example demonstrated as the thing which formed the opening part 11 in the intermediate part of the longitudinal direction of a container, the thing of any Example is also in the bending opening part 11 The shape is not formed with a half-cut process. The opening portion 11 does not necessarily have to be formed in the middle portion of the container, and has a structure in which the position is shifted to the left and right from the middle portion, and similarly, needs to be formed along the longitudinal direction. It can also be implemented as a shape formed along the short direction. Furthermore, the shape of the container in a plan view is not limited to a rectangular shape, and may be a square, a triangle, a trapezoid, a rhombus, or the like. It can also be implemented as such a shape.

  In addition, the container said to this invention does not need to be a single-piece | unit item like what was shown to the said each Example, and it can use it for the required number continuously at a time as a 2 or 3 series thing. It may be possible.

  In addition, in the case of resins having excellent moisture-proof ability, such as PP resin, but not so good in barrier performance such as oxygen permeability, a coating or a laminate is applied to improve the barrier performance. It is preferred to use a film.

  Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to only those shown in these embodiments, and the above-described object of the present invention is achieved. It is provided with structural requirements and can be implemented with appropriate modifications within the range having the above-described effects.

  Since the container referred to in the present invention does not need to form a half-cut line for breaking in the thickness direction in order to form an opening in a thin lid, and does not require a processing step therefor, it is homogeneous. There is an advantage that the product can be mass-produced at low cost, and it is thought that it will be widely spread.

DESCRIPTION OF SYMBOLS 1 Cover body 10 Sheet material 11 Folding opening part 12 Notch 13 Punching hole 2 Container body 20 Package accommodation chamber 21 Peripheral part a Side edge part b Side edge part w Width

Claims (3)

Consists of a substantially flat lid (1) made of hard resin and a container body (2) having a packaging product storage chamber (20) fixed to one side thereof, and an opening is formed by a folding operation. A packaging container,
The container body (2) includes a packaged product storage chamber (20) bulged with a flexible sheet, and the peripheral portion (21) of the storage chamber (20) is fixed to the lid (1).
The lid (1) is a unidirectionally stretched sheet of PET (polyethylene terephthalate) resin, PS (polystyrene) resin, PLA (polylactic acid) resin, or PP (polypropylene) resin formed to a predetermined thickness. Sheet material (10),
Folding the extending direction of the sheet material (10), formed along a bent opening portion of the lid (1) (11), the該折bent opening portion (11) that is a half-cut line absence Packaging container for bending opening. Consists of a substantially flat lid (1) made of hard resin and a container body (2) having a packaging product storage chamber (20) fixed to one side thereof, and an opening is formed by a folding operation. A packaging container,
The container body (2) includes a packaged product storage chamber (20) bulged with a flexible sheet, and the peripheral portion (21) of the storage chamber (20) is fixed to the lid (1).
The lid (1) is a unidirectionally stretched sheet of PET (polyethylene terephthalate) resin, PS (polystyrene) resin, PLA (polylactic acid) resin, or PP (polypropylene) resin formed to a predetermined thickness. Sheet material (10),
The stretching direction of the sheet material (10) is formed along the folded opening (11) of the lid (1), and the half-cut line is not present in the folded opening (11).
A folding and unsealing packaging container in which the forming resin of the container body (2) and the forming resin of the lid (1) are formed of the same resin material. Except for the folding opening (11) of the lid (1), the lid is placed on one or both sides of the side edge portions (a, b) in the width (w) direction of the container passing through the folding opening (11). The packaging container for folding and unsealing according to claim 1 or 2, wherein a notch (12) or a punching hole (13) for positioning the folding location of (1) is formed.

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