KR20050090313A - Container with lid - Google Patents

Abstract

A container having a lid made of a paper and a lid made of a plastic sheet which is joined so as not to fall out of the container is provided.

And a lid made of a paper sheet which is joined to an opening of the paper container, and a lid made of paper which forms side sections 7 to 10 consisting of curved plates from four sides of the bottom plate. Coupling grooves formed of curved grooves connected in an annular shape to the two edge portions, and an upper edge of each curved plate is engaged in each of the curved grooves so that a central curved top 33 of the upper edge thereof is formed on the outer wall of the curved groove. The pressing ribs 29 to 32 are provided on the outer wall of each corner portion formed in the adjacent portion of each of the engaging grooves, and the pressing ribs are formed on the adjacent portions of the respective side plates. The center of the upper edge of each said side plate by pressure contact with a corner part Vessel by pressure increase the pressure contact with the top track 33 and the outer wall central curved top portion 33 'of each of the coupling grooves having a lid according to the configuration that stress is concentrated on the contact points pressed by the respective pressing rib.

Description

Container with Lids {CONTAINER WITH LID}

TECHNICAL FIELD This invention relates to the container which has a lid which accommodates food, etc., and is provided for sale.

Patent documents 1-4 disclose the container made from the 1st paper provided with the structure of the following a-e.

a. 1st and 3rd sides which oppose are made into the curved side which protrudes symmetrically in the outward direction, and the other 2nd and 4th sides which oppose are made into the straight sides parallel to each other. A bottom plate is provided.

b. A first to fourth side plate, which is erected from the first to fourth sides and connected to each other, is provided and constitutes an accommodating portion that is opened upward from the bottom plate and the first to fourth side plates. Doing.

c. The first to fourth corner portions formed in the adjacent portions of the first to fourth side plates are connected to adjacent side plates, and are overlapped on the outer surfaces of the opposing first and third side plates. ) First to fourth joint plates adhered to the surface.

d. At least 1st and 3rd side plates which oppose among the said 1st-4th side plates consist of a curved board which protrudes outwardly.

e. The bottom plate is curved in an arch shape into the receiving portion.

Moreover, patent documents 1-4 disclose the container made from the 2nd paper provided with the structure of the following a-e.

a. The base plate is provided with the curved side which opposes the 1st, 3rd side which opposes in the outward direction symmetrically, and the bottom plate which makes the other 2nd and 4th edges as the curved side protrudes in the outward direction symmetrically.

b. The first to fourth side plates, which stand from the first to fourth sides and are connected to each other, comprise a bottom plate and a receiving portion that is opened upward from the first to fourth side plates.

c. A first to fourth corner portion formed at an adjacent portion of the first to fourth side plates, the first to fourth side plates being connected to adjacent side plates and overlapping with outer surfaces of opposing first and third side plates and bonded to the copper surface; And a fourth joint plate.

d. The first to fourth side plates are formed as curved plates that protrude outwardly.

e. The bottom plate is curved into a sphere into the receiving portion.

Patent Document 1: Japanese Unexamined Utility Model Publication No. 62-197517

Patent Document 2: JP-A-7-37975

Patent Document 3: Japanese Patent Application Laid-Open No. 8-324542

Patent Document 4: Japanese Unexamined Patent Publication No. 2000-33934

As mentioned above, the technique of the principle which makes each side plate of the container made of paper bend outward is already known by the said patent documents 1 -4.

SUMMARY OF THE INVENTION The present invention provides a container having a lid made of a paper sheet and a lid made of a plastic sheet which is joined so as not to fall out of the container as a developmental concept of the paper container.

In other words, the container made of paper is made of four side plates of the curved plate, the present invention in conjunction with the curved plate forming the four side plates of the container made of paper to apply a pressure to the lid made of a plastic sheet so as not to fall out Provide a container having a.

The container which has a lid concerning this invention forms the accommodating part which opens a side plate from each of the four sides of a bottom plate, and opens it upwards, and each It consists of a container made of paper made of a curved plate which is convex in the outward direction, and a lid made of plastic sheet which is joined to an opening of the container made of paper.

The lid made of the plastic sheet has a coupling groove connected to the four edges in an annular shape, and each of the coupling grooves comprises a curved groove that is convex outwardly.

And the upper edge of the curved plate forming each side plate of the container made of paper is combined in the curved groove forming the respective coupling grooves so that the center curved top of the upper edge is the outer wall of the curved groove. It is set as the structure which pressurizes a contact part in the center curved top of external.

Meanwhile, pressing ribs are provided on the outer wall of each corner portion formed in the adjacent portions of the respective coupling grooves, and the pressing ribs are formed in the adjacent portions of the respective side plates. Pressing contact is carried out at each corner part, and pressurization by the pressurizing rib causes the pressurized contact between the central curved top of the upper edge of each side plate and the central curved top of the outer wall of each engaging groove or the same. It is set as the structure which stress concentrates in the pressure contact point of each corner | angular part formed in the adjacent part of each side plate, and each pressurization rib by increasing pressure.

In other words, the first to fourth side plates are formed from the first to fourth sides of the bottom plate to form an accommodating portion for opening upward, and the first to fourth side plates are made of a paper made of a curved plate which is convex outward. Consisting of a container and a lid made of a plastic sheet joined to an opening of the paper container, the lid made of the plastic sheet having first to fourth engaging grooves connected in an annular shape to four edges, The first to fourth coupling grooves are curved grooves that protrude outwardly, and the upper edge of the curved plate forming the first to fourth side plates of the container made of paper is the first to fourth coupling grooves. The center curved top of the copper upper edge is joined to the inside of the curved groove forming the outer wall of the curved groove. The first to fourth pressure ribs are provided on the outer wall of the first to fourth corner portions formed in the adjacent portion of the first to fourth coupling grooves while being in pressure contact with the central curved top of the first to fourth coupling grooves. The pressurized ribs are pressed against the first to fourth corner portions formed in the adjacent portions of the first to fourth side plates, and the upper ends of the first to fourth side plates are pressed by the first to fourth pressure ribs. The first to the first contact portions formed at the adjacent portions of the first to fourth side plates by the pressing contact between the central curved top portion of the edge and the central curved top portion of the outer wall of the first to fourth coupling grooves or by increasing the pressure contact. It is to provide a container having a lid having a configuration in which stress is concentrated at the pressure contact points of the four corner portions and the first to fourth pressure ribs.

The container with the lid is a curved plate forming the container made of paper is properly coupled in the curved groove of the lid made of plastic sheet, the curved plate of the container made of paper, the curved groove of the lid made of plastic sheet And a lid having a lid capable of stably applying pressure so that the lid made of a plastic sheet does not easily come out of the paper made container by concentrating the stress at the four corner portions in which the pressure rib is interlocked so that the pressure rib is pressurized. do.

The dimension D2 between corner portions formed on adjacent sides of the side plates and present on a diagonal line and the dimension D2 between pressing ribs present on the diagonal line are set to have a relationship of D1> D2, and the four corner portions Ensures stress concentration in

Further, the dimension S2 between the central curved top of the upper edge of the opposing side plate and the central curved top of the outer wall of the opposing engaging groove is set to have a relationship of S1> S2. To ensure stress concentration.

In the container made of paper, at each corner portion formed in the adjacent portion of each side plate, a joint plate which is connected to the adjacent side plate and overlaps the outer surface of a pair of opposite side plates and adheres to the copper surface is provided. And the side plate portion to which the joint plate and the joint plate are joined is inserted between the outer wall and the inner wall of the pair of opposing pairs of grooves to effectively prevent outflow of the stress into the inside.

At the bottom edge of the outer wall of each coupling groove, an annular flange protruding outward is formed to facilitate coupling and disengagement of the lid made of a plastic sheet.

(Example)

1 to 12 show a container having a lid comprising a first container 1 made of paper and a lid 20 made of plastic sheet, wherein the container 1 made of paper is shown in FIGS. 1 and 2. 3, 5, and 7, the following structures a to e are provided.

a. The first and third sides 2 and 4 facing each other are curved sides that are symmetrically convex in the outward direction, and the second and fourth sides 3 and 5 facing each other are straight lines parallel to each other. It is provided with a side plate and has a bottom plate 6 which can be bent elastically up and down.

b. First to fourth side plates 7, 8, 9, and 10 that are erected from the first to fourth sides 2, 3, 4, and 5 and connected to each other, and include a bottom plate 6 and first to fourth side plates 7 The receiving part 11 which opens upwards at 8, 9, and 10 is comprised. The first to fourth side plates 7, 8, 9, and 10 may be elastically curved in and out.

c. The first to fourth corner portions 12, 13, 14, and 15 formed on adjacent portions of the first to fourth side plates 7, 8, 9, and 10 are connected to and opposed to the adjacent side plates; First and fourth joint plates 16, 17, 18, and 19 are stacked on the outer surfaces of the first and third side plates 7 and 9 and adhered to the same surface.

d. The first to fourth side plates 7, 8, 9, and 10 are each formed of a curved plate that is convex in the outward direction. The first and third side plates 7 and 9, which are erected from the first and third sides 2 and 4, formed of the curved sides, are curved at approximately the entire height, and the second and fourth sides 3 are formed of straight sides. , The second and fourth side plates 8 and 10, which are erected from 5, are flat in the region in contact with the straight sides thereof, and are curved in the region of the upper edge thereof.

e. The bottom plate 6 is curved in an arch shape into the receiving portion 11.

Next, as shown in Figs. 4, 5 and 8, the lid 20 made of a plastic sheet joined to the opening of the container 1 made of the first paper has the following configurations a to d.

a. It consists of a plastic sheet material which can see through the said accommodating part 11.

b. The first to fourth coupling grooves 21, 22, 23, and 24 connected to each other at four edge portions are provided.

c. The first to fourth coupling grooves 21, 22, 23, and 24 are curved grooves that protrude outwardly.

d. The first to fourth side plates on the outer walls of the first to fourth corner portions 26, 27, 28, and 29 formed in the adjacent portions of the first to fourth coupling grooves 21, 22, 23, and 24. First to fourth pressure ribs 29 for pressing the first to fourth corner portions 12, 13, 14, and 15 formed in an adjacent portion of 7, 8, 9, and 10 inwards; Install 30, 31, 32.

The lid 20 made of the plastic sheet having the above constitutions a to d is subjected to compression forming or vacuum forming by using a mold while heat-softening the plastic sheet.

6, 8, 9, and 10, the following structures a to c are given to the container 1 made of paper and the lid 20 made of a plastic sheet having the above structure.

a. The upper edge of the curved plate forming the first to fourth side plates 7, 8, 9, 10 of the container 1 made of paper forms the first to fourth coupling grooves 21, 22, 23, 24. To combine in.

b. The curved plate forming the first to fourth side plates 7, 8, 9, and 10 coupled in the curved groove has a central curved top 33 of the upper edge of the curved plate having the first to fourth coupling grooves 21, 22, A pressure contact with the central curved top 33 'of the outer wall 34 of the curved groove forming the 23 and 24 is combined.

c. A center curved top 33 of the upper edge of the curved plate forming the first to fourth side plates 7, 8, 9, and 10 by pressurization by the first to fourth pressing ribs 29, 30, 31, and 32; The pressurized contact with the central curved top 33 'of the outer wall 34 of the curved groove forming the first to fourth coupling grooves 21, 22, 23, 24 takes place. That is, although the upper edge of the curved plate is not in pressure contact with the outer wall 34 of the coupling groove by itself, the pressure contact force with the outer wall 34 of the curved groove is increased by the pressing ribs 29, 30, 31, 32. It is set as the structure to bring about.

Or a central curved top 33 of the upper edge of the curved plate forming the first to fourth side plates 7, 8, 9, and 10 by pressurization by the first to fourth pressure ribs 29, 30, 31, and 32, The pressure contact with the center curved top portion 33 ′ of the outer wall 34 of the curved groove forming the first to fourth coupling grooves 21, 22, 23, and 24 is increased. That is, the upper edge of the curved plate is configured to pressurize and contact the outer wall 34 of the coupling groove by its own elasticity, and pressurize the pressurized contact by the pressurization by the pressing ribs 29, 30, 31, 32. It is set as a configuration.

F5, F6, F7, and F8 represent the pressure contact points of the center curved top portion 33 'of the curved plate and the center curved top portion 33' of the outer wall 34 of the curved groove.

The stress is concentrated at the contact points F1, F2, F3, and F4 of the corner portions formed in the adjacent portions of the side plates 7, 8, 9, and 10 and the pressing ribs 29, 30, 31, and 32 by the above. It is set as a configuration.

13 to 22 show a container having a lid composed of a container 1 made of second paper and a lid 20 made of a plastic sheet, wherein the container 1 made of paper is shown in FIGS. 2, 13, 14, 15, and 15; As shown in 17, the following structures a to e are provided.

a. Opposing first and third sides 2 and 4 are curved sides that are symmetrically convex in the outward direction, and other opposing second and fourth sides 3 and 5 are curved sides that are symmetrically convex in the outward direction. It is provided with a bottom plate 6 that can be elastically bent up and down.

b. First to fourth side plates 7, 8, 9, and 10, which are erected from the first to fourth sides 2, 3, 4, and 5 and connected to each other, are provided with the bottom plate 6 and the first to fourth side plates 7, 8, The accommodating part 11 which opens upwards in 9 and 10 is comprised. In addition, the first to fourth side plates 7, 8, 9 and 10 may be elastically curved in and out.

c. 1st, 3rd, 3rd, 4th, 4th, 4th, 9th, 10th, 1st, 4th, 12th, 13th, 14th, and 15th side portions formed in adjacent portions of the first, third, and adjacent side plates. And first to fourth joint plates 16, 17, 18 and 19 which are superposed on the outer surfaces of the side plates 7 and 9 and adhered to the copper surface.

d. The first to fourth side plates 7, 8, 9, and 10 are formed as curved plates that protrude outwardly. The first to fourth side plates 7, 8, 9, and 10, which are erected from the first to fourth sides 2, 3, 4, and 5 made up of the curved sides, are curved at approximately the entire height.

e. The bottom plate 6 consists of a curved plate that is convexly convex into the receiving portion 11.

Next, as shown in Figs. 4, 15, and 18, the lid 20 made of a plastic sheet joined to the opening of the container 1 made of the second paper has the following configurations a to d.

a. It consists of a plastic sheet material which can see through the accommodating part 11.

b. The first to fourth coupling grooves 21, 22, 23, and 24 connected to each other at four edge parts are provided.

c. The first to fourth coupling grooves 21, 22, 23, and 24 are curved grooves which protrude convexly in the outward direction.

d. The first to fourth side plates 7, 8, on outer walls of the first to fourth corner portions 26, 27, 28, and 29 formed in adjacent portions of the first to fourth coupling grooves 21, 22, 23, and 24. First to fourth pressing ribs 29, 30, 31 and 32 are formed to press inwardly the first to fourth corner portions 12, 13, 14 and 15 formed in the adjacent portions of 9 and 10. As shown in FIG.

The lid 20 made of a plastic sheet having the configurations a to d is compression molded or vacuum molded using a mold while heat softening the plastic sheet.

As shown in Figs. 16, 19 and 20, the coupling structure of the following a to c is given to the container 1 made of paper and the lid 20 made of plastic sheet having the above configuration.

a. The upper edge of the curved plate forming the first to fourth side plates 7, 8, 9, 10 of the container 1 made of paper forms the first to fourth coupling grooves 21, 22, 23, 24. To combine in.

b. The curved plate forming the first to fourth side plates 7, 8, 9, and 10 coupled in the curved groove has a central curved top 33 of the upper edge of the curved plate having the first to fourth coupling grooves 21, 22, Compression contact with the center curved top 33 'of the outer wall 34 of the curved groove forming the 23, 24.

c. A center curved top 33 of the upper edge of the curved plate forming the first to fourth side plates 7, 8, 9, and 10 by pressurization by the first to fourth pressing ribs 29, 30, 31, and 32; The pressurized contact with the central curved top 33 'of the outer wall 34 of the curved groove forming the first to fourth coupling grooves 21, 22, 23, 24 takes place. In other words, the upper edge of the curved plate does not pressurize itself against the outer wall 34 of the coupling groove, but the pressing ribs 29, 30, 31, and 32 cause a pressing contact force with the outer wall 34 of the curved groove.

Or a central curved top 33 of the upper edge of the curved plate forming the first to fourth side plates 7, 8, 9, and 10 by pressurization by the first to fourth pressure ribs 29, 30, 31, and 32, The pressure contact with the outer wall 34 of the curved groove forming the first to fourth coupling grooves 21, 22, 23, and 24 is increased.

That is, the upper edge of the curved plate is configured to pressurize and contact the outer wall 34 of the coupling groove by its elasticity, and the pressurized contact is increased by the pressurization by the pressing ribs 29, 30, 31, 32. .

F5, F6, F7, and F8 represent the pressure contact points of the center curved top 33 of the curved plate and the center curved top 33 'of the outer wall 34 of the curved groove.

By the above, stress is concentrated in the contact part F1, F2, F3, F4 of each corner part formed in the adjacent part of each side plate 7, 8, 9, 10, and each pressurizing rib 29, 30, 31, 32. .

Receiving the side plates 7, 8, 9 and 10 from the four sides 2, 3, 4 and 5 of the bottom plate 6 by opening the container 1 made of the first and second papers and the lid 20 made of a plastic sheet and opening upwards. A lid made of a plastic sheet which is formed of a container 1 made of paper, which is made of a curved plate whose side plates 7, 8, 9, and 10 are convex outwardly, forming part 11, and the opening of the container 1 made of paper. 20, the lid 20 made of the plastic sheet has engaging grooves 21, 22, 23, 24 connected to the four edges in a ring shape, and the engaging grooves 21, 22, 23, 24 are directed outwards. A curved groove which is formed convexly, and the upper edge of the curved plate forming each side plate 7, 8, 9, 10 of the container 1 made of paper forms the respective coupling grooves 21, 22, 23, 24. Texture within home The center curved top portion 33 of the upper edge thereof is in pressure contact with the central curved top portion 33 'of the outer wall 34 of the curved groove and is formed at the corners of the engaging grooves 21, 22, 23 and 24, respectively. The pressurized ribs 29, 30, 31, 32 are provided in the outer wall 34 of 26, 27, 28, and each pressurized rib 29, 30, 31, 32 is formed in the adjacent part of each said side plate 7, 8, 9, 10. In contact with each of the corners 12, 13, 14, and 15, and the center curved top 33 of the upper edge of the side plates 7, 8, 9, 10 by pressing by the pressing ribs 29, 30, 31, 32 The pressing contact with the center curved top portion 33 'of the outer wall 34 of each of the engaging grooves 21, 22, 23, 24 occurs or the pressure forming contact is increased to form the adjacent portions of the side plates 7, 8, 9 and 10. A sphere in which stress is concentrated at the corners 12, 13, 14, 15 and the pressure contact points of the pressure ribs 29, 30, 31, 32, respectively. To form a container having a cap according to.

The container having the lid formed by the container 1 made of the first and second papers and the lid 20 made of the plastic sheet is a curved sheet forming the side plates 7, 8, 9 and 10 of the container 1 made of paper. A curved plate which properly engages in the curved groove of the lid 20 made and forms the container 1 made of paper, the curved groove of the lid 20 made of a plastic sheet, and the pressurized ribs 29, 30, 31, 32 interlock with each other. The pressure ribs 29, 30, 31, and 32 are concentrated in the four corners at which the pressure ribs are pressed into contact, and the lid 20 made of plastic sheet can be pressurized stably so that the lid 20 does not easily come out of the container 1 made of paper. A container having a lid that can be provided is provided.

As shown in Figs. 11, 12, 21, and 22, the side plates 7, 8, and 9 each have a lid including a lid 1 made of the first and second papers and a lid 20 made of a plastic sheet. , D1 between the corner portions 12, 14 and 13, 15 formed in the vicinity of 10 and present on the diagonal, and D2 between the pressing ribs 29, 31 and 30, 32 on the diagonal, D1. The stress concentration at the four corners is ensured by setting the relationship> D2.

In addition, the size S2 between the center curved top portion 33 'of the upper edge portion of the opposing side plate and the central curved top portion 33' of the outer wall of the opposing engaging groove are set in a relationship of S1> S2, thereby forming a double central curve. Secure pressurized contacts between the tops 33 and 33 '.

In addition, in a container having a lid comprising a container 1 made of the first and second papers and a lid 20 made of a plastic sheet, the container is formed in an adjacent portion of each side plate 7, 8, 9, 10 of the container 1 made of paper. Each corner portion 12, 13, 14, 15 is connected to adjacent side plates 7, 8, 9 and 10, and is superimposed on the outer surfaces of a pair of opposing first and third side plates 7 and 9 to adhere to the copper surface. The first to fourth joint plates 16, 17, 18, and 19, and a pair of first and third members facing the first and third side plates 7 and 9 to which the joint plate and the joint plate are joined. It is inserted between the outer wall 34 and the inner wall 35 of the coupling grooves 21 and 23, that is, the innermost depth of the coupling grooves 21 and 23. Therefore, the outflow of the stress to the pressure contact points by the pressure ribs 29, 30, 31, 32 is effectively prevented.

The first and second joint plates 16 and 17 joined to the outer surface of the first side plate 7 are spaced apart from each other, and the first side plate 7 is remarkably laterally between the first and second joint plates 16 and 17. The center curved top portion 33 of the upper edge of the first side plate 7 between the first and second joint plates 16 and 17 is in pressure contact with the central curved top portion 33 'of the outer wall 34 of the first coupling groove 21.

Similarly, the third and fourth joint plates 18 and 19 joined to the outer surface of the third side plate 9 are spaced from each other, and the third side plate 9 is remarkably between the third and fourth joint plates 18 and 19. It curves laterally, and the center curved top part 33 of the upper edge of the 3rd side plate 9 between the 3rd, 4th joint plates 18 and 19 presses against the center curved top part 33 'of the outer wall 34 of the 3rd engaging groove 23. As shown in FIG.

As shown in Figs. 1 and 13, the first to fourth side plates 7, 8, 9, and 10 are inverted trapezoids that are narrow in width and gradually widen toward the upper edge on the bottom plate 6 side, and the adjacent side plates. The first to fourth joint plates 16, 17, 18, and 19 disposed between 7, 8, 9, and 10 have a delta shape.

The first to fourth joint plates 16, 17, 18, and 19 are divided into two delta pieces by a central cutting line 39 terminating at the corners of the bottom plate 6. The delta piece is folded in double at the center line 39, and the inner delta piece of the double folded joint plate is bonded to the outer surfaces of the first and third side plates 7, 9. By this adhesion, the curved shapes of the first to fourth side plates 7, 8, 9 and 10 are maintained.

Similarly, there is a disconnection line 40 between each side plate 7, 8, 9, 10 and each joint plate 16, 17, 18, 19, and there is a disconnection line 41 between each side plate 7, 8, 9, 10 and bottom plate 6. Each side plate 7, 8, 9, 10 is erected from the four sides of the bottom plate 6 via cut line 41, and each joint plate 16, 17, 18, 19 is cut at the corners of the side plates 7, 8, 9, 10 through cut line 40. It protrudes while double-folding outward, and tries to adhere | attach the said 1st, 3rd side plates 7 and 9.

5 and 15, the outer wall of each of the engaging grooves 21, 22, 23, and 24 in a container having a lid comprising a container 1 made of the first and second papers and a lid 20 made of a plastic sheet. The lower edge portion of the cap is formed with an annular flange 36 protruding outward to facilitate the engagement and disengagement of the lid 20 made of a plastic sheet.

The first to fourth coupling grooves 21, 22, 23, and 24 have a shape that is narrow at the deepest part of the upper end and gradually widens at the lower end of the lower end, and is formed at the lower edge of the outer wall 34 of the lower opening. Form an annular flange 36.

The annular flange 36 is continuous to the inclined plate 37 and the bottom of the inclined plate 37, which becomes an angle of attach when the lid 20 made of plastic sheet is attached to the container 1 made of paper. It consists of an edge plate 38 which projects approximately horizontally.

The top edge of the side plate of the container 1 made of paper slides on the surface of the inclined plate 37, and is easily coupled in the coupling grooves 21, 22, 23, and 24. The inclined plate 37 and the edge plate 38 have a lid 20 made of a plastic sheet. In the case of attaching and detaching from the container 1 made of paper, it becomes a place to hold with a finger, and the attachment and detachment operation is easy.

This invention is a paper which consists of a curved board which forms the accommodating part which raises a 1st-4th side plate from the 1st-4th side of a bottom plate, and opens it upward, and the 1st-4th side plate protrudes outward. And a lid made of a plastic sheet that is joined to an opening of the container made of paper, the lid made of the plastic sheet having first to fourth coupling grooves connected in annular shape at four edges, The first to fourth coupling grooves are curved grooves which protrude outwardly, and the upper edge of the curved plate forming the first to fourth side plates of the container made of paper is the first to fourth coupling. In the curved grooves forming the grooves so that the central curved top of the copper upper edge is outside of the curved groove The first to fourth pressure ribs are provided on the outer wall of the first to fourth corner portions formed in the adjacent portion of the first to fourth coupling grooves while being in pressure contact with the central curved top of the first to fourth coupling grooves. The pressurized ribs are pressed against the first to fourth corner portions formed in the adjacent portions of the first to fourth side plates, and the upper ends of the first to fourth side plates are pressed by the first to fourth pressure ribs. The first to the first contact portions formed at the adjacent portions of the first to fourth side plates by the pressing contact between the central curved top portion of the edge and the central curved top portion of the outer wall of the first to fourth coupling grooves or by increasing the pressure contact. It is to provide a container having a lid having a configuration in which stress is concentrated at the pressure contact points of the four corner portions and the first to fourth pressure ribs.

The container with the lid is a curved plate forming the container made of paper is properly coupled in the curved groove of the lid made of plastic sheet, the curved plate of the container made of paper, the curved groove of the lid made of plastic sheet And a lid having a lid capable of stably applying pressure so that the lid made of a plastic sheet does not easily come out of the paper made container by concentrating the stress at the four corner portions in which the pressure rib is interlocked so that the pressure rib is pressurized. do.

The dimension D2 between corner portions formed on adjacent sides of the side plates and present on a diagonal line and the dimension D2 between pressing ribs present on the diagonal line are set to have a relationship of D1> D2, and the four corner portions Ensures stress concentration in

Further, the dimension S2 between the central curved top of the upper edge of the opposing side plate and the central curved top of the outer wall of the opposing engaging groove is set to have a relationship of S1> S2. To ensure stress concentration.

In the container made of paper, at each corner portion formed in the adjacent portion of each side plate, a joint plate which is connected to the adjacent side plate and overlaps the outer surface of a pair of opposite side plates and adheres to the copper surface is provided. And the side plate portion to which the joint plate and the joint plate are joined is inserted between the outer wall and the inner wall of the pair of opposing pairs of grooves to effectively prevent outflow of the stress into the inside.

At the bottom edge of the outer wall of each coupling groove, an annular flange protruding outward is formed to facilitate coupling and disengagement of the lid made of a plastic sheet.

1 is a plan view showing an unfolded state of a container made of first paper.

2 is a side view of a container made of the first paper and a container made of the second paper;

3 is a plan view of a container made of the first paper.

4 is a plan view of the lid made of a plastic sheet bonded to the container made of the first paper and the container made of the second paper, seen from the inner surface side.

Fig. 5 is a cross-sectional view showing a state before joining a container made of the first paper and a lid made of a plastic sheet.

Fig. 6 is a sectional view showing a state after the copper coupling.

7 is a plan view showing only the bottom plate of the container made of the first paper.

Figure 8 is a plan view showing only the extraction groove of the lid.

9 is a plan view showing the coupling state of each side plate of the container made of paper and the coupling groove.

Fig. 10 is a plan view showing a pressurized contact state at a corner portion of a container made of pressurized ribs and paper.

Fig. 11 is a plan view showing dimensions between the ribs of the engaging groove and the center curved top of the engaging groove.

Fig. 12 is a plan view showing the dimensions between the corner portions of the container made of paper and the center curved top portion of the side plate.

Fig. 13 is a plan view showing an expanded state of a container made of second paper.

Fig. 14 is a plan view of a container made of the second paper.

Fig. 15 is a sectional view showing a state before joining a container made of the second paper and a lid made of a plastic sheet.

Fig. 16 is a cross-sectional view showing a state after the copper coupling.

Fig. 17 is a plan view showing only the bottom plate of the container made of the second paper.

Figure 18 is a plan view showing only the extraction groove of the lid.

Fig. 19 is a plan view showing the coupling state of each side plate of the container made of paper with the coupling groove.

Fig. 20 is a plan view showing a pressurized contact state at a corner of a container made of pressurized ribs and paper.

Fig. 21 is a plan view showing dimensions between the ribs of the engaging groove and the center curved top of the engaging groove.

Fig. 22 is a plan view showing the dimensions between the corner portions of the container made of paper and the center curved top portion of the side plate.

Explanation of symbols on the main parts of the drawings

DESCRIPTION OF SYMBOLS 1: Paper container 2-5: 1st-4th side

6: bottom plate 7 to 10: first to fourth side plates

11: accommodating part

12 to 15: corner portions formed in adjacent portions of each side plate

16 to 19: first to fourth joint plate

20: lid made of plastic sheet

21 to 24: first to fourth coupling groove

25 to 28: corner portion formed in the adjacent portion of each curved groove (coupling groove)

29 to 32: first to fourth pressure rib

33: center curved top of the engaging groove (中央 頂上 部)

33 ': center curved top of side plate

34: outer wall of curved groove

35: inner wall of the curved groove (coupling groove)

36: annular flange

37: inclined plate 38: edge plate

39, 40, 41: disconnection

Claims (5)

A curved plate is formed from each of the four sides of the bottom plate to form an accommodating portion that stands up and opens upwards, and each side plate is convex in the outward direction. A lid made of paper and a lid made of plastic sheet joined to the opening of the paper container, the lid made of plastic sheet having a ring shape at the four edges. The upper edge of the curved plate having a coupling groove connected to each other, each of the coupling grooves is formed as a curved groove outwardly convex, and forms each side plate of the container made of paper. The center curved top of the upper edge is coupled by combining in the curved grooves forming the respective coupling grooves. Pressing ribs on the outer walls of the corner portions formed in the adjacent portions of the engaging grooves while being in press contact with the outer walls of the curved grooves. And pressurizing each of the pressurized ribs to each corner portion formed in the adjacent portion of the respective side plates, and pressurized by the pressurized ribs to form a central curved top of the upper edge of each side plate and each engaging groove. The pressurized contact with the center curved top of the outer wall occurs or the pressure contact is increased to increase the pressure contact between the corner portions formed in the adjacent portions of the side plates and the pressurized ribs. A container having a lid, wherein the lid is configured to concentrate. The method of claim 1, A container having a lid, characterized in that the dimension D2 between corner portions formed on an adjacent portion of each side plate and present on a diagonal line and the dimension D2 between pressing ribs on the diagonal line are set in a relationship of D1> D2 . The method of claim 1, And a dimension S2 between the central curved top of the opposite edge of the opposing side plate and the central curved top of the outer wall of the opposing engaging groove in a relationship of S1> S2. The method of claim 1, In each corner formed in the adjacent portion of each side plate is provided with a joint plate which is connected to the adjacent side plates and is superimposed on the outer surface of a pair of opposite side plates and bonded to the copper surface, the joint plate and its joints And a side plate portion to which a plate is joined is inserted between an outer wall and an inner wall of the pair of opposing coupling grooves. The method of claim 1, The lower edge portion of the outer wall of each coupling groove container having a lid, characterized in that for forming an annular flange (flange) protruding in the outward direction.