JP6535291B2 - Plastic container - Google Patents

Description

  The present invention relates to an easily openable synthetic resin container.

  DESCRIPTION OF RELATED ART Conventionally, the synthetic resin container which provided easy-open property is well-known. For example, with respect to the flange portion of the synthetic resin container, a recessed portion which is notched for gripping and peeling the lid material is formed at at least one place on the outer peripheral edge, and the lid on the outer peripheral end of the upper surface and inside thereof The outer annular ridge and the inner annular ridge for fixing the material are provided over the entire circumference, and the inner annular ridge in the vicinity of the recess is provided with an initial opening in the radially outward direction, and the outer annular ridge and the inner annular ridge There is known a synthetic resin container in which pillar-shaped projections for fixing a lid material are scattered at least in the vicinity of a recess between the two, and an initial opening is formed on both sides of the recess (see Patent Document 1).

Patent No. 4933705 gazette

  However, in the synthetic resin container of Patent Document 1, as a container suitable for a container to be retorted, an outer annular ridge and an inner annular ridge are provided in the flange portion, and the lid material is further welded to the flange surface. Since a plurality of columnar protrusions are provided in the gap between the outer annular ridge and the inner annular ridge in order to prevent this, the width dimension of the flange portion becomes wide, and the appearance is excellent though it is easy to open. Was concerned that it would damage the

  In addition, although the container is easy to open, the seal strength is high in order to provide high sealing property when welding the flange portion and the lid material, and the elderly people having a small tensile force can not be easily opened. There was a concern about the decrease in operability regarding opening.

  Then, this invention solves such a problem, and it makes it a subject to provide the synthetic resin container excellent in easy-openability, the designability, and operativity.

  In order to solve the above-mentioned problems, the synthetic resin container according to claim 1 of the present invention is a composite comprising a container body provided with a flange portion at the upper opening periphery and a lid member welded to the flange portion. It is a container made of resin, and the flange portion has a concave portion formed inward from the outer peripheral edge portion, and a protruding portion to which the lid member is welded on the upper surface, and the protruding portion The device is characterized by comprising: a first opening assisting portion formed outward at both end portions of the recess; and a second opening assisting portion formed outward between the first opening assisting portion. It is said that.

The container made of synthetic resin according to claim 2 of the present invention is the container made of synthetic resin according to claim 1, wherein the flanges at both ends of the recess are directed outward from the outer peripheral edge portion And protruding portions are formed.

The container made of synthetic resin according to claim 3 of the present invention is the container made of synthetic resin according to claim 1 or 2 , wherein an inner shape of at least the flange portion facing the recess is the flange portion And an inner-shaped connecting portion connecting the other inner-shaped regions.

The container made of synthetic resin according to claim 4 of the present invention is the container made of synthetic resin according to any one of claims 1 to 3 , wherein the second opening assisting unit is the first opening. It is formed to be axisymmetric to a virtual opening line passing through the center of the ridge portion located between the first opening assisting portions, which is orthogonal to a line connecting the apexes located in the outward direction of the assisting portions. It is

Further, in the synthetic resin container according to claim 5 of the present invention, in the synthetic resin container according to any one of claims 1 to 4 , the container main body holds the lid member. It has the holding part which each opposes in the position orthogonal to the opening direction to open.

A container made of synthetic resin according to claim 6 of the present invention is the container made of synthetic resin according to any one of claims 1 to 5 , wherein the container main body has a non-slip portion on the outer peripheral surface. It is what you have.

  According to the synthetic resin container of the present invention, the container can be excellent in easy openability, designability and operability.

It is a disassembled perspective view of the synthetic resin container in the Example of this invention. It is a longitudinal cross-sectional view of the synthetic resin container in the Example of this invention. It is a cross-sectional view of the synthetic resin container in the Example of this invention. It is a partially-omission top view of the container main part of the synthetic resin container in the Example of this invention. It is a partially-omitted top view of the container main body of the synthetic resin container in another Example of this invention.

  Hereinafter, a synthetic resin container according to an embodiment of the present invention will be described based on the drawings. The container is provided with a container main body provided with a flange at the periphery of the upper opening, and a lid member welded to the flange, and two types of opening assisting portions are provided in the projecting streaks of the flange, Openability and design can be provided. In addition, by providing the holding portion and the non-slip portion when holding the container main body in the container main body, the operability can be improved.

  In the container, the lid side is above the container, and the side on which the bottom of the container body is provided is below the container. 1 is an exploded perspective view of a synthetic resin container, FIG. 2 is a longitudinal sectional view of the synthetic resin container, FIG. 3 is a horizontal sectional view of the synthetic resin container, and FIG. FIG. FIG. 5 is a partially omitted plan view of the container body in another embodiment.

  The synthetic resin container according to the present invention, as shown in FIG. 1, is mainly composed of a container main body 10 provided with a flange portion 11 at the upper opening periphery and a lid member 20 welded to the flange portion 11 .

  The container body 10 is open at the top, and a flange portion 11 is provided at the periphery of the top opening so as to expand outward. The said container main body 10 is shape | molded from vacuum molding or injection molding etc., for example with synthetic resins, such as polyethylene and a polypropylene. In the container body 10, for example, non-retort foods such as mozuku and tofu are stored as individual food, but it goes without saying that retort foods can be stored.

  Further, the flange portion 11 is formed with a notch-like concave portion 11 a from the outer peripheral edge portion toward the inner side. When opening the synthetic resin container, the concave portion 11 a is provided so that the lid member 20 becomes an independent pick piece. Moreover, the recessed part 11a can also be used as a mark at the time of opening. The shape of the recess 11a may be arc-shaped, substantially V-shaped, substantially U-shaped, substantially wavy or the like, as long as it has a shape such that a finger or a finger can be inserted at the time of opening. is not.

  Moreover, the convex part 11b protrudes and is respectively formed in the both ends of the recessed part 11a toward an outer direction from an outer-periphery part. The said convex part 11b is provided so that the width dimension of the flange part 11 can be narrowed by this while ensuring the formation area of the 1st opening assistance part 13 mentioned later. Moreover, the convex part 11b can also be made into the mark at the time of opening similarly to the recessed part 11a. The shape of the convex portion 11 b is not particularly limited, but it is formed so as to protrude outward from the outer peripheral edge portion of the flange portion 11, and therefore has a corner portion from the viewpoint of preventing user injury and the like. It is desirable to be formed in a non-rounded state.

  Further, on the upper surface of the flange portion 11, a protruding ridge portion 12 projecting upward is formed over the entire region. As shown in FIG. 2, the protruding ridge portion 12 is formed in a substantially trapezoidal shape in cross section so that the upper portion is narrowed, and the lid member 20 is welded to the upper portion. Further, as shown in FIG. 1 and FIG. 4, in order to facilitate opening of the lid member 20, the first open assisting portion at a position corresponding to the convex portion 11 b of the flange portion 11. While being formed, the second opening assisting portion 14 is formed at a position corresponding to the recess 11a.

  The first opening assisting portion 13 is formed to face the convex portion 11 b of the flange portion 11 and to protrude in the outward direction of the container main body 10. Further, the second opening assisting portion 14 is opposed to the concave portion 11 a of the flange portion 11, and protrudes toward the outside direction of the container main body 10 at the projection connecting portion 15 between the first opening assisting portions 13 of both members. It is formed to The shape of the protrusion connecting portion 15 may be linear, curved or a combination thereof as appropriate, but from the viewpoint of opening or the width of the flange portion 11, the shape of the recess 11a It is desirable that it correspond to

  At this time, it is desirable that the convex portion 11 b and the first opening assisting portion 13 be formed symmetrically with respect to the shape of the concave portion 11 a from the viewpoint of opening. Thereby, when pulling away the welded lid material 20 from the container main body 10, an action force acts uniformly on the left and right first opening assisting portions 13, and it becomes easy to open. Moreover, it is desirable that the second opening assisting portion 14 is also formed symmetrically with respect to the shape of the projection connecting portion 15 between the first opening assisting portions 13 from the viewpoint of opening.

  Further, as shown in FIGS. 1 and 3, the container body 10 is provided with a grip portion 16 so as to easily open the lid member 20 by gripping the outer peripheral surface. The grip portion 16 is formed in a state of being recessed inward from the outer peripheral surface of the container body 10. Moreover, as for the holding part 16, it is desirable to form so that each may oppose in the position orthogonal to the unsealing direction of the cover material 20, in order to be easy to hold the container main body 10. FIG.

  The gripping portion 16 is not particularly limited as long as it has a shape that facilitates gripping at the time of opening, and may be, for example, a semicircular recessed portion or a recessed portion so as to have a flat portion 16a. It is the meaning that it may be lost. The grip portion 16 can also be used as a positioning portion by sandwiching or fitting the portion in a transport step or the like when welding the lid member 20 to the container main body 10.

  Moreover, as shown in FIG. 1, the non-slip part 17 is provided in the outer peripheral surface except the bottom face and the holding part 16 at the container main body 10. As shown in FIG. The non-slip portion 17 may be formed in a plurality in the vertical direction, a linear shape, a curved shape, or a combination thereof appropriately formed by protruding or sinking along the outer peripheral surface of the container main body 10. It can also be formed by uniformly arranging predetermined regions such as substantially triangular, substantially rectangular, substantially circular, and other patterns subjected to surface treatment such as textured treatment, but the present invention is not limited to this.

  The lid member 20 is not particularly limited as long as it has a shape capable of covering the flange portion 11 and is a heat-sealable synthetic resin film such as polyethylene, and a known film can be adopted. .

  In the present embodiment, as shown in FIGS. 1 and 4, the outer diameter 11c of the flange portion 11 in the container main body 10 has the same diameter size except for a partial region where the concave portion 11a and the convex portion 11b are formed. Are formed. Then, a recess 11a is formed by forming an arc-shaped notch from the outer shape 11c of the flange portion 11 toward the inner side, and the concave portion 11a is formed from the outer shape 11c of the flange portion 11 at both ends of the recess 11a. The convex portion 11 b is formed by projecting and forming a gentle mountain-like portion having the same shape.

  Further, the inner shape 11 d of the flange portion 11 in the container main body 10 is formed to have the same diameter, except for the partial region where the concave portion 11 a and the convex portion 11 b are formed. Then, an inner-shaped portion at a position facing at least the recess 11 a is an inner-shaped connecting portion 11 e connecting the region of the other inner shape 11 d of the flange portion 11. Further, from the viewpoint of improving the strength of the opening assisting region, the inner connecting portion 11e may be an inner portion of a portion facing the recess 11a and the both projections 11b. The inner connecting portion 11e is, for example, formed in a straight line so as to be a chord connecting arcs of the inner shape 11d formed from the same diameter, but is not limited to this, and a curved shape or a combination thereof is appropriately Of course, it can be

  That is, the upper surface of the flange portion 11 is formed to have the same width dimension except for the partial region, and both convex portions 11 b are protruded outward in the outer shape 11 c of the flange portion 11 In the inner shape 11 d of the flange portion 11, the corresponding position is connected by the inner shape connecting portion 11 e. Thereby, after securing the opening assistance region which forms the 1st opening assistance part 13 and the 2nd opening assistance part 14, by constituting so that the width dimension of the whole flange part 11 may become narrow, container main part 10 The design of the flange portion 11 is improved.

  In addition, the ridge portion 12 is formed substantially at the center of the width dimension of the upper surface of the flange portion 11, and the first opening assisting portion 13 and the second opening assisting portion 14 are formed to correspond to the opening assisting region. Ru. The first opening assisting portion 13 is formed in a substantially V shape toward the outside direction of the container main body 10 at a position facing the respective convex portions 11 b of the flange portion 11. Further, the respective first opening assisting portions 13 are connected by an arc-shaped protruding portion connecting portion 15 formed along the concave portion 11a, and the second opening assisting portion 14 is connected to the protruding portion connecting portion. The central portion 15 is formed to be substantially M-shaped toward the outside of the container body 10.

  Here, a line segment L2 orthogonal to a line segment L1 connecting the apexes of the both convex portions 11b located in the outermost direction and passing through the center in the radial direction of the flange portion 11 is taken as an unsealing imaginary line. That is, the unsealing imaginary line passes through the center of the container main body 10, passes through the center of the protrusion connecting portion 15, and passes through the center of the recess 11a. Further, regarding the protrusion 12, the opening imaginary line is orthogonal to the line segment connecting the apexes located in the outward direction of the first opening assisting unit 13, and the protrusion 12 located between the first opening assisting unit 13 It will pass through the center of (protrusion connecting portion 15).

  At this time, the first opening assisting portion 13 and the second opening assisting portion 14 are formed to be line symmetrical with respect to the opening imaginary line from the viewpoint of easy opening property. Thereby, when tearing off the welded lid material 20 from the container main body 10, the action force at the time of opening can be made to act evenly on the left and right first opening assisting portions 13 and the second opening assisting portions 14.

  Further, as shown in FIG. 2 and FIG. 3, the grip portion 16 provided on the outer peripheral surface of the container body 10 is inclined in parallel with the opening virtual line so that the flat portion 16 a is inclined from the top to the bottom of the container body 10 It is provided in the form of The flat portion 16a is formed so as to be recessed from the outer peripheral surface of the container main body 10, and has a substantially U shape so as to be convex downward when the stepped portion 16b serving as a finger hook is on the upper side. Is formed.

  Further, the non-slip portion 17 provided on the outer peripheral surface excluding the bottom surface of the container main body 10 and the grip portion 16 is along the outer peripheral surface of the container main body 10 from above to below the container main body 10 as shown in FIG. It is provided projecting. The non-slip portion 17 is formed into a substantially rectangular shape by the matte processing, and is alternately disposed so that the non-slip portion 17 and the non-slip portion are in a lattice form from the upper side to the lower side of the container body 10.

  Thus, by providing the grip portion 16 and the non-slip portion 17 on the outer peripheral surface of the container body 10, the flat portion 16a fits the palm or fingertips of the user when the container body 10 is gripped, and slips Since the grip force can be improved by the stopper 17 and the grip can be firmly held via the step 16b, the operability at the time of opening can be improved.

  Further, in the lid member 20, in the region where the double convex portion 11b and the concave portion 11a are provided, the tongue piece 21 protruding toward the outside direction of the container main body 10 is formed, and a flange having other same diameter dimension The portion 11 is formed to be slightly larger than the outer shape 11 c of the flange portion 11. By welding the lid member 20 at least to the upper part of the ridge portion 12, the container body 10 is sealed.

  Further, with regard to welding of the lid member 20, it is desirable to weld the upper portion of the protruding portion 12 and the outer edge 11c of the flange portion 11 to the lid member 20 from the viewpoint of improving the sealing performance. Thereby, the lid 20 can be prevented from curling or becoming wavy.

  The synthetic resin container configured in this manner is opened as follows. First, put a fingertip in the recess 11a provided in the flange portion 11 of the container main body 10, hold the portion (the tongue portion 21) corresponding to the lid member 20 and pull it up in the direction of the opening imaginary line. The outer edge 11c of the upper surface is peeled off. After that, since the substantially V-shaped first opening assisting portion 13 is formed in the flange portion 11 in the outward direction at both end portions of the recessed portion 11 a, the first opening assisting portion 13 is the protrusion 12 of It will be torn off first.

  Then, with the first opening assisting portion 13 as a starting point, the ridges 12 are gradually pulled to both ends. At this time, since the ridges 12 positioned in the outer direction of the respective first opening assisting portions 13 are extended along the shape of the flanges 11, they are sequentially pulled off along the opening direction. .

  On the other hand, in the ridge portion 12 positioned in the inner direction of the respective first opening assisting portions 13, that is, in the ridge connection portion 15, since the ridge portion 12 is curved in the inward direction of the container main body 10 The peeling force can not be achieved by the same action force as the action force for peeling the first opening assisting portion 13 formed in the substantially V shape in the outward direction. However, a substantially M-shaped second opening assisting portion 14 is formed toward the outside until it reaches the region of the ridge connecting portion 15 located on the inner-shaped connecting portion 11e side and located in the innermost direction. Therefore, the second opening assisting portion 14 can be used as a trigger to pull off the area located in the innermost direction. By this, it is possible to peel off without significantly applying a peeling force.

  As described above, according to the synthetic resin container of the present invention described above, the two first opening assisting portions 13 are provided in the protruding portion 12 in the flange portion 11, and the first protruding portion 12 between the first opening assisting portions 13 is 2 Because the opening support portion 14 is provided, it is possible to be excellent in easy openability.

  In addition, since the width dimension of the whole of the flange portion 11 is narrowed after securing the opening assisting region for providing the assisting portions 13 and 14, the designability of the container main body 10 should be excellent. Can. Moreover, since the holding part 16 and the non-slip part 17 were provided in the outer peripheral surface of the container main body 10, it shall be excellent in operativity.

  In the said Example, it is possible to change the shape of the container main body 10, the cover material 20, the 1st opening assistance part 13, the 2nd opening assistance part 14 grade | etc., Suitably, and to implement. For example, in the flange portion 11, except for a partial region where the concave portion 11a and the convex portion 11b are formed, they are formed to have the same diameter, but the present invention is not limited to this. For example, it is a matter of course that an appropriate shape such as an oval shape, a triangle shape, a quadrangle shape, or a polygonal shape can be made. Of course, the shapes of the container body 10 and the lid member 20 can be made to correspond appropriately.

  Moreover, in the 2nd opening assistance part 14, although provided in the center part of the protrusion connection part 15 in the protrusion part 12, it is not restricted to this. For example, as shown in FIG. 5, if the protrusion connecting portion 15 is formed so as to be symmetrical with respect to the unsealing imaginary line, the protrusion connecting portion 15 is located on the inner connecting portion 11 e side, It can also be provided in the outer direction (the side of the first opening assisting portion 13) than the area of the protrusion connecting portion 15 to be formed. As a result, the second opening assisting portion 14 acts at an earlier stage, which is more preferable. The second opening assisting unit 14 is not limited to this, and it is needless to say that the second opening assisting unit 14 can be appropriately combined with the one provided on the first opening assisting unit 13 side and the one provided on the central part.

  Moreover, the non-slip portion 17 is not limited to the entire surface of the outer peripheral surface of the container main body 11 except the bottom surface and the grip portion 16, but can be provided on a part such as the upper side or the lower side in the vertical direction Of course.

  Moreover, it is needless to say that a part of the configuration can be omitted and a partially extracted configuration can be made.

DESCRIPTION OF SYMBOLS 10 container main body 11 flange part 11a recessed part 11b convex part 11c external shape 11d inner shape 11e inner form connection part 12 protrusion part 13 1st opening assistance part 14 2nd opening assistance part 15 protrusion connection part 16 grip part 16a flat part 16b step Part 17 Non-slip part 20 Lid 21 Tongue piece

Claims (6)

A container made of synthetic resin, comprising: a container body provided with a flange portion at the periphery of the upper opening; and a lid member welded to the flange portion,
The flange portion has a concave portion formed inward from an outer peripheral edge portion, and a protruding portion on the upper surface of which the lid member is welded.
The protruding ridge portion includes a first opening assisting portion formed outwardly at both end portions of the recess, and a second opening assisting portion formed outwardly between the first opening assisting portion.
A container made of synthetic resin, comprising: The synthetic resin container according to claim 1, wherein the flanges at both end portions of the concave portion are formed with convex portions protruding outward from the outer peripheral edge portion . The synthetic resin container according to claim 1 or 2 , wherein an inner shape of the flange portion facing at least the concave portion is an inner shape connecting portion connecting other inner shape regions of the flange portion . The second opening assisting unit is orthogonal to a line connecting the apexes located in the outer direction of the first opening assisting unit, and passes through the center of the protrusion located between the first opening assisting units. The synthetic resin container according to any one of claims 1 to 3, which is formed to be line symmetrical with respect to a virtual line . The container made of synthetic resin according to any one of claims 1 to 4, wherein the container main body has holding parts opposed to each other at a position orthogonal to the opening direction for holding and opening the lid. . The synthetic resin container according to any one of claims 1 to 5, wherein the container body has a non- slip portion on an outer peripheral surface .

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