JP4286849B2 - Paper food packaging container - Google Patents

Description

  The present invention relates to a paper food packaging container that does not leak water.

The side wall of the paper cup is made of single-sided cardboard material to prevent the hand from feeling intensely hot when gripping a paper cup containing high-temperature liquid, and can be safely held by hand due to the thermal insulation effect of the cardboard material There is an invention of such a paper container. For example
JP-A-9-77044

In paragraph 0013 of the above publication, there is a description that the side facing the liquid storage portion of the liner of the cardboard material is coated with polyvinyl chloride or the like for waterproofing,
In paragraph 0021 of the same publication, there is a description that the adhesive margin provided on the side wall part or that the adhesive is fixed by applying polyvinyl chloride or the like between the lower end and the bottom part of the side wall part main body and performing heat treatment.

  However, when the heat treatment is performed, the commercial value as a high-grade food packaging container is not so much considered while the coating agent such as polyvinyl chloride protrudes from the adhered gap.

Therefore, the present invention, for example, made a beautiful paper food packaging container that contains a heavy box for New Year dishes or a high-quality Japanese sweet confectionery that does not leak moisture, and has a robust structure.
The side wall member of the body of the container is folded in two with a belt-like B flute or E flute corrugated cardboard with liners on both sides, and a longitudinal groove is placed near the end of one side of the B flute or E flute. The decorative paper with the backing material attached is folded in half, and the ends thereof are laminated so as not to cover the grooves provided in the laminated material of B flute or E flute, and the corner of the side wall member is It cuts diagonally and forms the side wall of the desired piece, and each square face is joined in a frame shape with an adhesive.

  The bottom plate member of the container main body is formed by attaching decorative paper to both sides of thick paper fitted to the groove, and the bottom plate member is cut into a desired shape to form the bottom plate.

  Further, the bottom plate member is folded in two, and a leg wall member having a width that contacts the lower surface of the bottom plate that fits into the groove and protrudes downward from the lower end surface of the side wall portion is formed, and the leg wall member is inclined 45 degrees. It cuts and forms the leg wall part of a desired piece, and each square surface is joined to a frame shape with an adhesive, and is joined to the lower inner wall of the side wall with an adhesive.

  The side wall member of the lid body of the container was folded in three on the surface of the B flute or E flute made of a strip-shaped corrugated cardboard with a liner attached on one side, and the width of the open end was folded in half. It is shorter than the width and overlapped so as to provide a step at the open end, and the corners of the side wall member are cut at an angle of 45 degrees to form the desired side wall, and each corner is joined to the frame with an adhesive To do.

  The top plate member of the lid body of the container has the same configuration as the bottom plate member of the body body of the container, and the lower surface of the edge portion is joined to the step portion provided on the upper surface of the side wall portion with an adhesive.

The leg wall member of the lid body of the container is configured in the same manner as the leg wall member of the body main body, and the leg wall member is cut at an angle of 45 degrees to form a desired leg wall portion, and each corner surface is framed with an adhesive. And joining the outer wall surface of the leg wall part to the inner wall surface of the side wall part with an adhesive,
The body and lid body of the container formed by applying the adhesive is heated, and the adhesive does not protrude from the gap between the adhesive application surfaces. The purpose is to provide.

  When the heat treatment is performed, even if the adhesive protrudes from the gap between the adhesive body of the container body and the lid body, the adhesive will not evaporate and remain, so it is beautiful and has a good appearance and does not leak water A paper food packaging container is obtained.

    As shown in FIG. 8, the side wall member 2 of the body body 1 of the container is bonded to the liner 3 by superimposing a belt-like corrugated cardboard material made of B flute or E flute with liners 3 on both sides, Cut the groove 4 in the longitudinal direction near the edge of one side of the E flute, fold the decorative paper 5 with the backing material on it, and remove the groove 4 of the laminated material consisting of B flute or E flute. 1 and 2, the side wall member 2 is cut into a desired length to form the side wall portion 6, and each square surface 6a is joined in a frame shape using an instantaneous adhesive.

  A bottom plate member 7 whose edge is fitted in the groove 4 is formed by sticking decorative paper on both sides of cardboard, and the bottom plate member 7 is cut into a desired shape to form a bottom plate 8.

  Further, the bottom plate member 7 is folded in two, and a leg wall member 9 is formed which is in contact with the lower surface of the bottom plate 8 fitted in the groove 4 and has a width protruding downward from the lower end surface of the side wall 6. 9 is cut into a desired length to form a leg wall portion 10, and each square surface 10 a is joined into a frame shape using an instantaneous adhesive, and the outer wall surface of the leg wall portion 10 is connected to the lower portion of the side wall portion 6. Adhere to the wall with instant adhesive.

  A decorative sheet 5 made of B flute or E flute with a liner 13 attached to one side and a liner 13 attached with a backing material is attached to the liner 13, and four folding lines 12c are provided and folded in two. Further, the side wall member of the lid body 11 of the container is formed so that the stepped portion 12b is formed in the open end portion 12a when the open end portion 12a is folded in three by making the width of the open end portion 12a shorter than the width of the folded surface. 12, the side wall member 12 is cut into a desired length to form the side wall portion 14, and each square surface 14a is joined in a frame shape using an instantaneous adhesive.

  The top plate member 15 of the lid body 11 of the container has the same configuration as the bottom plate member 7 of the body body 1 of the container. The bottom plate member 7 is cut into a desired shape to form the top plate 16, and the lower surface of the edge portion is formed. It adheres to the said step part 12b of the side wall part 14 joined in frame shape using an instantaneous adhesive agent.

  The leg wall member 17 of the container lid main body 11 is configured in the same manner as the leg wall member 9 of the container body main body 1, and the leg wall member 17 is cut to a desired length to form the leg wall portion 18. The square surface 18a is joined in a frame shape using an instantaneous adhesive, and the outer wall surface of the leg wall portion 18 is bonded to the inner surface of the side wall portion 14 using the instantaneous adhesive. The body body 1 and the lid body 11 thus configured are heated in an electric heating oven at 140 degrees Celsius for 2 minutes to 2 minutes and 30 seconds, and the instantaneous adhesive does not protrude from the gap between the coated surfaces. You will get a beautiful and high value commercial paper food packaging container.

  A high-quality paper-style food packaging container that is beautiful and has good appearance and does not leak water, and has a high marketability.

The top view which shows the body main body of the container which concerns on this invention. FIG. AA sectional drawing in FIG. The front view which shows the cover main body of the container which concerns on this invention. AA sectional drawing in FIG. The front view which shows the side wall member of the body of a container. FIG. The expanded AA sectional view in FIG. The principal part cutting top view which shows the state which expand | deployed the side wall member of the cover main body of a container. The top view which shows the state which folded the side wall member three times similarly. The front view which shows the top-plate member or bottom-plate member which concerns on this invention. The enlarged front view which opens a part of the body main body of the container based on this invention, and shows an internal structure. The top view which shows the cover main body of a container. The bottom view which shows the cover main body of a container. The side view which shows the leg wall member which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container body 4 Groove 6, 14 Side wall part 8 Bottom plate 10, 18 Leg wall part 11 Container lid body 12c Level | step difference 16 Top plate

Claims (1)

  Each side face of the body side wall formed by forming a longitudinal groove on the side wall member made of a strip-like corrugated cardboard and pasting decorative paper on the surface and cutting the side wall member to a desired length is framed with an adhesive. A leg wall member having a width that fits into the groove and protrudes downward from the lower end surface of the side wall portion while fitting the bottom plate made of cardboard with the decorative paper pasted onto the groove into the groove. The body wall of the container is formed by bonding the leg wall part formed by cutting into a frame shape with an adhesive and bonding the leg wall part to the inner wall surface of the side wall part with an adhesive. A decorative paper is pasted and folded on the surface made of a material, the width of the open end is made shorter than the width of the folded surface, the side wall member formed with the stepped portion is cut to a desired length, and the cut surface is bonded with an adhesive. From cardboard that is joined in a frame shape to form the side wall of the lid body, with decorative paper pasted on the surface Adhere the lower surface of the edge of the top plate to the upper surface of the step with an adhesive, cut the leg wall member with a width protruding downward from the lower end surface of the side wall to a desired length, and cut the cut surface into a frame with an adhesive Adhering the leg wall part joined to the inner wall surface of the side wall part with an adhesive to form the lid body of the container, heating the container body and the lid body so that the adhesive does not protrude from the gap on the application surface A paper food packaging container characterized by having been made.

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