JP2006315689A - Paper container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper container which is easily stuck and sealed by a lid of a container body while the lid is not spontaneously separated. <P>SOLUTION: A lid 10 comprises a top wall 1 consisting of a top plate part 1a joined with a container body 50 and a hanging part 1b fitted to a fitting groove 2f (not shown) of a skirt wall 2, and the skirt wall 2 consisting of an outer peripheral wall part 2a to form a side face and an upper folding margin 2b and a lower folding margin 2c to form the fitting groove 2f. The upper folding margin 2b is press-fitted to the outer peripheral wall part 2a over the entire surface, and the lower folding margin 2c is partially press-fitted to the outer peripheral wall part 2a. In addition, the hanging part 1b of the top wall 1 is fitted to the fitting groove 2f of the skirt wall 2 to be press-fitted and fixed thereto to rigidly assemble the lid 10. The lid 10 and the container body 50 are stuck and sealed to each other by joining the top plate part 1a of the top wall 1 with a flange part 3a of a body wall 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  INDUSTRIAL APPLICABILITY The present invention provides a paper container, particularly a rigidly assembled lid that makes it difficult to spontaneously separate the top plate and the skirt wall, and has an excellent stackability, and easily seals the container body with the lid. The present invention relates to a paper container.

2. Description of the Related Art Conventionally, paper containers for storing frozen confections such as ice cream or preserved foods such as pickles have been widely distributed. The lid of such a paper container is composed of a disk-shaped top plate and a skirt wall having a curl portion whose upper end is wound inward along the circumferential direction, and the top plate is fitted into the skirt wall. A so-called two-piece configuration in which the outer peripheral portion of the upper surface is engaged with the curled portion is known (see, for example, Patent Documents 1 to 3).
In these paper containers, the lid is attached to the container body. After the contents are filled in the container body, the lower part of the skirt wall of the lid is wound inward by post-processing to form the curl portion. The curling portion is engaged with the flange portion, or the lower portion of the skirt wall is folded inward so as to be locked to the flange lower surface or the curl lower surface of the container body. Alternatively, from the beginning, an upper and lower curled portion in which both the upper and lower portions of the skirt wall are wound inside is formed, and the lower curled portion of the skirt wall is engaged with the lower surface of the flange portion of the container body while the lid is pushed into the container body. It is done by joining. Alternatively, the top plate of the lid and the flange portion of the container main body are bonded by glue.
No. 04-30130 JP 2004-123105 A JP 2004-217233 A

In the above conventional paper container, when the lid has a two-piece structure, the top plate and the skirt wall are fixed by simply fitting the top plate inside the skirt wall and engaging the lower surface of the curl portion. When mounted on the main body, the outer peripheral edge of the top plate is sandwiched from above and below by the curled portion of the skirt wall and the flange portion or curled portion of the container main body, or the top plate and the upper curled portion are sandwiched by glue. This is done by bonding.
However, the inside of the paper container is filled with cold matter, and when a predetermined temperature difference occurs between the outside air and the paper container, moisture is condensed on the outer peripheral surface or inner peripheral surface of the paper container. And the condensed moisture gradually permeates the inside while accumulating at the joint between the top plate and the curled portion, and deteriorates the adhesive strength of the glue or the shape holding force. As a result, a so-called return deformation occurs to return from the bent shape to the original shape, and the top plate and the skirt wall constituting the lid may be naturally separated.
On the other hand, in the paper container, since the curled portion exists at the upper outer peripheral edge portion of the lid as described above, the outer peripheral edge portion of the lid is heated and suppressed from the upper portion, and the lid is placed on the upper surface of the flange portion or the curled portion of the container body. There is a problem that heat sealing cannot be performed, and as described above, the lower end of the skirt wall must be bent by post-processing to take a locking means to the container body, and it takes time to seal the container body with the lid. There is a problem.
Furthermore, since the lid of the paper container does not have a means for engaging with each other when stacked, the stack of the paper container becomes unstable and easily fluctuates, which causes a problem in storage stability during transportation.
The present invention was devised in view of the above circumstances, has a lid that is rigidly assembled, makes it difficult to spontaneously separate the top plate and the skirt wall, and has excellent stackability, and is a lid of the container body. An object of the present invention is to provide a paper container that can be easily sealed.

In order to achieve the above object, according to the first aspect of the present invention, there is provided a container body having a body wall and a bottom wall in which contents are stored, and a lid body having a top wall and a skirt wall and sealing the container body. The top wall of the lid body has a top plate portion having a horizontal surface at least at the peripheral end portion and a hanging portion formed by hanging from the top plate portion along the circumferential direction. The skirt wall of the lid body has a lower folding allowance formed by being folded inward at least at the lower part and an outer peripheral wall part forming a side wall, and the hanging part of the top wall is an outer peripheral wall part of the skirt wall. And a fitting groove formed by the lower folding allowance and fixed by crimping.
In the paper container having the above structure, the top wall and the skirt wall constituting the lid body are folded down from the top plate portion along the circumferential direction of the top wall. It is fixed by crimping by fitting in a fitting groove formed by a margin. As a result, it is possible to perform crimping and fixing while securing a sufficient joint surface between the top wall and the skirt wall. Furthermore, since there is no bent shape such as a curl in the hanging part of the top wall and the fitting groove of the skirt wall, the top wall and the skirt wall are rigidly fixed. As a result, return deformation does not occur when the lid is fixed to the container body, and the contents do not leak to the outside. In addition, since the top plate portion of the top wall has a horizontal surface at the peripheral end portion, it is possible to suitably secure a joining surface with respect to the container body and also suitably secure a joining surface with respect to an external device such as a heater. Can do. As a result, the container body can be easily sealed with the lid body and has a sealing property in which condensed moisture hardly penetrates into the interior.

According to a second aspect of the present invention, the skirt wall has an upper folding allowance formed by being folded inward at an upper portion of the outer peripheral wall portion, and the fitting groove is formed by the upper folding allowance and the lower folding allowance. Is formed.
In the paper container having the above-described configuration, since the fitting groove is formed by the upper folding allowance formed by folding inward at the upper part and the lower folding allowance at the lower part, the hanging part of the ceiling wall to be fitted is suitable. Retained. As a result, it is possible to perform crimping and fixing while securing a sufficient joint surface between the top wall and the skirt wall. Furthermore, since there is no bent shape such as a curl in the hanging part of the top wall and the fitting groove of the skirt wall, the top wall and the skirt wall are rigidly fixed. As a result, return deformation does not occur when the lid is fixed to the container body, and the contents do not leak to the outside. In addition, since the top plate portion of the top wall has a horizontal surface at the peripheral end portion, it is possible to suitably secure a joining surface with respect to the container body and also suitably secure a joining surface with respect to external devices such as a heater Can do. As a result, the container body can be easily sealed with the lid body and has a sealing property in which condensed moisture hardly penetrates into the interior.

According to a third aspect of the present invention, the upper fold margin of the skirt wall is entirely crimped to the inner peripheral surface of the outer peripheral wall portion, and the lower fold margin of the skirt wall is within a range that does not overlap with the upper fold margin. And is partially crimped to the inner peripheral surface of the outer peripheral wall.
In the paper container having the above-described configuration, the skirt wall portion where the upper fold margin is fully crimped is forged to increase the strength, while the skirt wall where the lower fold margin is partially crimped is also forged to further increase the strength. It becomes like this. Moreover, the part which is not crimped | bonded to the inner peripheral surface of a skirt wall among lower folding allowances can contribute to formation of the fitting groove | channel which the hanging part of a ceiling wall fits suitably. As a result, when the hanging portion of the top wall is fitted into the fitting groove formed on the skirt wall and is crimped, the coupling degree of the fitting portion becomes dense, and the top wall and the skirt wall easily peel off naturally. Disappear.

According to a fourth aspect of the present invention, the hanging portion of the top wall protrudes from the upper outer peripheral end of the skirt wall, and the maximum outer diameter is substantially equal to or less than the maximum inner diameter of the skirt wall.
In the paper container having the above-described configuration, the maximum outer diameter of the hanging portion is approximately equal to or less than the maximum inner diameter of the skirt wall, so that the top wall of the lid is aligned with the inside of the skirt wall of the other lid. It becomes possible to do. Thereby, a some cover body can be piled up stably.

In the paper container having the above-described configuration according to claim 5, the hanging portion of the top wall has a narrowed portion whose maximum outer diameter is substantially equal to or less than the maximum inner diameter of the skirt wall and expands downward. It has a diameter.
In the paper container having the above configuration, since the maximum outer diameter of the narrowed portion is substantially equal to or less than the maximum inner diameter of the skirt wall, the narrowed portion of the lid is fitted to the inside of the skirt wall of the other lid. Is possible. Thereby, a plurality of lids can be stacked stably.

  According to the paper container of the present invention, with respect to the crimping and fixing of the top wall and the skirt wall constituting the lid, the hanging portion formed perpendicular to the disk portion along the circumferential direction of the top wall is provided on the skirt wall. An upper folding allowance formed by being folded back at the upper part and being fully crimped to the outer peripheral wall part of the skirt wall; and a lower folding allowance formed by being folded at the lower part of the skirt wall and being partially crimped to the outer peripheral wall part of the skirt wall; Since the top wall and the skirt wall are fixed by crimping by fitting into the fitting groove formed by, the lid consisting of the top wall and the skirt wall is rigidly assembled, and the top wall and the skirt wall are naturally peeled off Never do. As a result, it is possible to prevent the top plate and the skirt wall from peeling due to the return deformation of the curled portion of the lid in the conventional paper container. In addition, since the top wall of the lid is horizontal at least at the outer peripheral end, the lid can suitably secure a joint surface with the container body and can suitably secure a joint surface with an external device such as a heater. The lid can be directly heat sealed to the flange portion of the container body. As a result, the container body can be easily sealed with the lid body and has a sealing property in which the condensed moisture hardly penetrates into the interior. Furthermore, since the maximum outer diameter of the hanging part or the throttle part of the top wall is substantially equal to or less than the maximum inner diameter of the skirt wall, a plurality of lids can be stacked stably. As a result, a large amount of lids can be transported while being stacked, which is advantageous for the production of paper containers. Alternatively, it is advantageous for storage of the lid.

  Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings. Note that the present invention is not limited thereby.

FIG. 1 is a cross-sectional view illustrating a lid 10 according to the first embodiment.
The lid body 10 includes a top wall 1 that forms an upper surface and a skirt wall 2 that forms a side surface. More specifically, the top wall 1 includes a top plate portion 1a that forms an upper surface and is joined to a container body, and a hanging portion 1b that fits a fitting groove 2f (not shown) of the skirt wall 2, while The skirt wall 2 includes an outer peripheral wall portion 2a that forms a side surface, and upper and lower folding allowances 2b and 2c that form a fitting groove 2f that engages with a hanging portion 1b of the top wall.

  The top wall 1 is obtained, for example, by pressing a cylindrical punch against a disk-shaped hard paper, the top plate portion 1a has a disk shape, and the hanging portion 1b has a cylindrical shape. is there. The skirt wall 2 is formed by cutting, for example, a hard roll paper to an appropriate length and turning it back at the upper outer peripheral end 2d and the lower outer peripheral end 2e. By crimping, for example, by knurling, the lower folding margin 2c is shown in detail in FIG. 2, but only a part of the lower part is crimped to the outer peripheral wall 2a by, for example, knurling. can get. Thereby, the ceiling wall 1 and the skirt wall 2 are crimped and fixed by inserting and crimping the hanging portion 1b into the fitting groove 2f formed in the vicinity of the upper outer peripheral end 2d of the skirt wall 2. As a result, the top wall 1 and the skirt wall 2 are crimped and fixed while ensuring a sufficient joint surface, so that the connection between the top wall 1 and the skirt wall 2 is strengthened, and the upper folding margin 2b is formed on the outer peripheral wall 2a. Since the lower folding allowance 2c is partially crimped to the outer peripheral wall 2a, the lid 10 is assembled rigidly. As a result, when the lid 10 is used for a paper container, the return deformation of the lid 10 does not occur. Furthermore, since the top plate portion 1a of the top wall 1 has a horizontal portion in contact with the flange surface of the container body, it can be suitably sealed with the container body.

  Further, the maximum inner diameter D2 of the skirt wall 2 is adjusted to be slightly larger than the maximum outer diameter D1 of the top wall 1. As a result, a plurality of lids 10 as shown in FIG. 3 can be stably stacked (stacked), and a large amount of lids 10 can be transported while being stacked, thereby producing a paper container. It becomes advantageous to. Alternatively, it is advantageous for storage of the lid 10 or storage and display of a filled container.

FIG. 2 is a partial cross-sectional view illustrating the skirt wall 2 of the lid 10 according to the second embodiment.
As described above, the skirt wall 2 is cut into a suitable length, for example, by cutting a hard roll paper, and folded back inward at the upper outer peripheral end 2d and the lower outer peripheral end 2e, and the upper folding margin 2b with respect to the outer peripheral wall 2a. It is obtained by crimping the entire surface and partially crimping the lower folding allowance 2c to the outer peripheral wall 2a. Moreover, it has the fitting groove 2f formed by the upper folding allowance 2b and the lower folding allowance 2c in the vicinity of the upper outer peripheral end 2d. From the figure, when the length of the outer peripheral wall portion 2a is L1, the length of the upper folding allowance 2b is L2, the length L3 of the lower folding allowance 2c, and the length of the fitting groove 2f is L, the hanging portion 1b In order to be fitted into the fitting groove 2f, the length L of the fitting groove 2f must be established as L = (L2 + L3) −L1> 0. Preferably, (L2 + L3) ≧ 1.5 × L1 is there. Thereby, the top wall 1 and the skirt wall 2 are rigidly fixed while ensuring a sufficient joint surface.

FIG. 3 is an explanatory diagram of a stack of the lid body 10 according to the first embodiment.
This figure shows a state in which three lids 10, 10, 10 are stacked. The drooping portion 1b of the lowermost first lid body 10 is fitted to the inner peripheral surface of the skirt wall 2 of the second lid body 10 located on the first lid body 10 so that the second lid body 10 is on the first lid body 10. Fixed to. Then, the drooping portion 1b of the second lid body 10 is fitted to the inner peripheral surface of the skirt wall 2 of the third lid body 10 located thereon, and the third lid body 10 is placed on the second lid body 10. Fixed. In this way, since the inner peripheral surfaces of the top wall 1 and the skirt wall 2 are suitably fitted, the stack posture is stabilized. As a result, a large amount of lids 10 can be packaged while being stably stacked, which is advantageous for the production of paper containers. Alternatively, it is advantageous for storage of the lid 10 and storage and display of filled containers.

FIG. 4 is a cross-sectional view illustrating the paper container 100 according to the first embodiment.
The paper container 100 has the above-mentioned lid in which a top wall 1 composed of a top plate portion 1a and a hanging portion 1b and a skirt wall 2 composed of an outer peripheral wall portion 2a, an upper folding margin 2b and a lower folding margin 2c are fixed by pressure bonding. 10 and a container body 50 which is filled with the contents and includes the body wall 3 and the bottom wall 4.

  The body wall 3 includes, for example, an inverted semi-conical tapered wall, a flange portion 3a formed by being bent at the upper end and bent outward at approximately 90 ° (specifically, an angle obtained by subtracting the taper angle from 90 °), And an inwardly bent portion 3b formed by bending 180 ° inward at the lower end. Note that the lower end of the body wall 3 may be molded into a curled portion wound inward instead of the inwardly bent portion 3b.

  The bottom wall 4 has, for example, a disk-shaped bottom plate and an outer bent portion 4a formed by bending the outer end of the disc into an outer side and approximately 90 ° (specifically, 90 ° plus a taper angle). is doing.

  The container body 50 is fixed by engaging the inner bent portion 3b of the body wall 3 with the outer bent portion 4a of the bottom wall 4 and performing pressure bonding, for example, knurling. The container body 50 is filled with a frozen food such as ice cream or a preserved food such as pickles.

  According to the paper container 100, the top wall 1 and the skirt wall 2 are formed by suitably fitting the hanging portion 1b of the top wall 1 into the fitting groove 2f formed by the upper folding allowance 2b and the lower folding allowance 2c. The skirt wall 2 of the lid body 10 is fixed by crimping while ensuring a sufficient joining surface, and the upper folding margin 2b is entirely crimped to the outer peripheral wall portion 2a and the lower folding margin 2c is partially crimped to the outer peripheral wall portion 2a. Therefore, the lid body 10 is rigidly fixed and no return deformation occurs. Furthermore, since the lid body 10 has the top plate portion 1a to be joined to the container body 50, it is possible to directly contact an external device such as a heater, and the adhesive sealing between the lid body 10 and the container body 50 is facilitated. At the same time, the condensed moisture is difficult to permeate inside.

FIG. 5 is a main part explanatory view showing the adhesive sealing of the lid body 10 and the container main body 50 according to the first embodiment.
Adhesive sealing of the lid 10 and the container body 50 is performed by using a container support frame P that engages the glue N or heat-sealable resin adhered between the top wall 1 and the flange portion 3a with the lower surface of a flange such as a bucket of a conveyor. And it is made by press-melting with a heater H. As a result, conventionally, since the upper part of the lid has a shape curled inward, the heater H cannot be brought into direct contact with the place where the glue is attached. Can directly contact the heater H to the place where the glue is attached, so that the lid 10 and the container body 50 can be easily bonded and sealed, and at the same time, the production efficiency of the content filling operation is suitably improved. To do. In addition, the paper container 100 has a sealing property in which the condensed moisture hardly penetrates into the inside.

FIG. 6 is a cross-sectional view illustrating the lid 20 according to the second embodiment.
The lid 20 includes a top wall 1 that forms an upper surface and a skirt wall 2 that forms a side surface. More specifically, the top wall 1 has an upper surface and a top plate portion 1a joined to the container body, a hanging portion 1b fitted to a fitting groove 2f (not shown) of the skirt wall 2, and other lids. The skirt wall 2 includes a fitting groove 2f that fits the outer peripheral wall portion 2a that forms the side surface and the hanging portion 1b of the top wall. And upper and lower folding allowances 2b and 2c.

  The top wall 1 is obtained, for example, by drawing a disk-shaped hard paper. The shape of the top plate portion 1a is a disk shape, whereas the shape of the hanging portion 1b and the drawing portion 1c is cylindrical. Although there is, the mouth is gradually widened from the narrowed portion 1c to the hanging portion 1b. The skirt wall 2 is formed by cutting, for example, a hard roll paper into an appropriate length and turning it back at the upper outer peripheral end 2d to form an upper folding margin 2b, which is crimped to the outer peripheral wall 2a, and then the lower outer peripheral end 2e. And the lower folding allowance 2c is formed and the fitting groove 2f is formed. Thereby, the ceiling wall 1 and the skirt wall 2 are fixed by crimping by inserting the hanging portion 1b into the fitting groove 2f formed near the upper outer peripheral end 2d of the skirt wall 2 and crimping the fitting portion from the inside. Is done. As a result, the top wall 1 and the skirt wall 2 are crimped and fixed while ensuring a sufficient joint surface, so that the connection between the top wall 1 and the skirt wall 2 is strengthened, and the upper folding margin 2b is formed on the outer peripheral wall 2a. Since the entire surface is crimped, the lid 20 is assembled rigidly. As a result, when the lid 20 is used for a paper container, the return deformation of the lid 20 does not occur. Furthermore, since the top plate portion 1a of the top wall 1 has a horizontal portion in contact with the flange surface of the container body, it can be suitably sealed with the container body.

  Further, the maximum outer diameter D3 of the throttle portion 1c of the top wall 1 is adjusted to be slightly larger than the maximum inner diameter D2 of the skirt wall 2. As a result, a plurality of lids 20 as shown in FIG. 8 can be stacked (stacked), and a large amount of lids 20 can be transported while being stably stacked. It becomes advantageous to. Alternatively, it is advantageous for storage of the lid 20 and storage and display of filled containers.

FIG. 7 is a partial cross-sectional view showing the skirt wall 2 of the lid 20 according to the second embodiment.
As described above, the skirt wall 2, for example, cuts a hard roll paper to an appropriate length and folds it at the upper outer peripheral end 2d and the lower outer peripheral end 2e, and presses the upper folding margin 2b against the outer peripheral wall 2a. It is obtained by doing. Moreover, it has the fitting groove 2f formed by the upper folding allowance 2b and the lower folding allowance 2c in the vicinity of the upper outer peripheral end 2d. From the figure, when the length of the outer peripheral wall portion 2a is L1, the length of the upper folding allowance 2b is L2, the length L3 of the lower folding allowance 2c, and the length of the fitting groove 2f is L, the hanging portion 1b In order to be fitted into the fitting groove 2f, the length L of the fitting groove 2f must be L = (L2 + L3) −L1> 0, and desirably L3≈L1 and 0 ≦ L2 <L1. More preferably, L2 ≧ 0.5 × L1 and L3 ≧ 0.8 × L1. Thereby, the top wall 1 and the skirt wall 2 are rigidly fixed while ensuring a sufficient joint surface.

FIG. 8 is an explanatory view showing a stack of the lid 20.
This figure shows a state in which three lids 20, 20, 20 are stacked. The drooping portion 1b of the lowermost first lid body 20 is fitted to the inner peripheral surface of the skirt wall 2 of the second lid body 20 located thereon, so that the second lid body 20 is on the first lid body 20. Fixed to. And the drooping part 1b of the 2nd cover body 20 fits to the internal peripheral surface of the skirt wall 2 of the 3rd cover body 20 located on it, and the 3rd cover body 20 on the 2nd cover body 20 Fixed. In this way, since the inner peripheral surfaces of the top wall 1 and the skirt wall 2 are suitably fitted, the stack posture is stabilized. As a result, a large amount of lids 20 can be packaged while being stably stacked, which is advantageous for the production of paper containers. Alternatively, it is advantageous for storage of the lid 20 and storage and display of filled containers.

FIG. 9 is a cross-sectional view of the lid 30 according to the third embodiment.
The lid body 30 includes a top wall 1 that forms an upper surface and a skirt wall 2 that forms a side surface. More specifically, the top wall 1 includes a top plate portion 1a that forms an upper surface and is joined to a container body, and a hanging portion 1b that fits a fitting groove 2f (not shown) of the skirt wall 2, while The skirt wall 2 includes an outer peripheral wall portion 2a that forms a side surface, and upper and lower folding allowances 2b and 2c that form a fitting groove 2f that engages with a hanging portion 1b of the top wall.

  The top wall 1 is obtained by, for example, molding while pressing a cylindrical punch against a disk-shaped hard paper. The shape of the top plate portion 1a is a disk shape, whereas the shape of the hanging portion 1b is It is cylindrical. The skirt wall 2 is obtained, for example, by cutting a hard roll paper to an appropriate length and turning it back at the upper outer peripheral end portion 2d and the lower outer peripheral end portion 2e. The wall 2a is crimped by, for example, knurling or gluing, while the lower folding allowance 2c is not crimped to the outer peripheral wall 2a. Thereby, the ceiling wall 1 and the skirt wall 2 are pressure-bonded and fixed by inserting the hanging portion 1b into the fitting groove 2f formed in the vicinity of the upper outer peripheral end 2d of the skirt wall 2. As a result, the top wall 1 and the skirt wall 2 are crimped and fixed while ensuring a sufficient joint surface, so that the connection between the top wall 1 and the skirt wall 2 is strengthened, and the upper folding margin 2b is formed on the outer peripheral wall 2a. Since the entire surface is crimped, the lid 30 is assembled rigidly. As a result, when the lid 30 is used for a paper container, the return deformation of the lid 30 does not occur. Furthermore, since the top plate portion 1a of the top wall 1 has a horizontal portion in contact with the flange surface of the container body, it can be suitably sealed with the container body.

  In the first to third embodiments, the top plate portion of the lid body is circular, and the body wall of the container body has an inverted half-cone shape. However, the shape is not limited to these shapes, and the top plate portion of the lid body is rectangular or central. May be a hat shape with a convex shape and a flat periphery, and the body wall of the container body may be an inverted quadrangular pyramid or a hemisphere with a flange.

  In addition to food preservation or food storage such as preserved foods, frozen confectionery, refrigerated products, frozen products, etc., the present invention can also be suitably applied to clothes or small items stored therein or product packaging.

1 is a cross-sectional view showing a lid according to Example 1. FIG. It is a fragmentary sectional view which shows the skirt wall of the cover body concerning Example 1. FIG. It is explanatory drawing which shows the stack | stuck of the cover body concerning Example 1. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory cross-sectional view of a main part showing a paper container according to Example 1. It is principal part explanatory drawing which shows the adhesive seal | sticker of the cover body and container main body concerning Example 1. FIG. It is sectional drawing which shows the cover body concerning Example 2. FIG. It is a fragmentary sectional view which shows the skirt wall of the cover body concerning Example 2. FIG. FIG. 9 is an explanatory diagram showing a stack of lids according to Example 2. It is sectional drawing which shows the cover body concerning Example 3. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top wall 1a Top plate part 1b Hanging part 1c Restriction part 2 Skirt wall 2a Outer peripheral wall part 2b Upper folding allowance 2c Lower folding allowance 3 Body wall 4 Bottom wall 10, 20, 30 Lid 100 Paper container

Claims (5)

  A paper container comprising a container body having a body wall and a bottom wall for storing contents, and a lid body having a top wall and a skirt wall and sealing the container body, the top of the lid body The wall has a top plate portion having a horizontal surface at least at a peripheral end portion and a hanging portion formed by hanging from the top plate portion along the circumferential direction, and the skirt wall of the lid body is folded inward at least at the lower portion. A lower folding allowance and an outer peripheral wall portion forming a side wall, and the hanging portion of the top wall is fitted in a fitting groove formed by the outer peripheral wall portion of the skirt wall and the lower folding allowance. And a paper container characterized by being crimped and fixed.   2. The skirt wall has an upper folding allowance formed by being folded inward at an upper portion of the outer peripheral wall portion, and the fitting groove is formed by the upper folding allowance and the lower folding allowance. Paper container.   The upper fold of the skirt wall is entirely crimped to the inner peripheral surface of the outer peripheral wall, and the lower fold of the skirt wall is partially crimped to the inner peripheral surface of the outer peripheral wall within a range not overlapping with the upper fold. The paper container according to claim 2.   4. The paper product according to claim 1, wherein the hanging portion of the top wall protrudes from an upper outer peripheral end portion of the skirt wall, and a maximum outer diameter is substantially equal to or less than a maximum inner diameter of the skirt wall. container.   The hanging part of the top wall has a throttle part whose maximum outer diameter is substantially equal to or less than the maximum inner diameter of the skirt wall and expands downward. Paper container.

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