JP2007302265A - Paper cup with irregular shape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper cup with an irregular shape which is manufactured by using a roll-feed type paper cup molding machine that produces less paper powder and defective molds, offers high sealing performance with a lid material, and makes the irregular shape simultaneously in a molding process. <P>SOLUTION: The paper cup composed of a trunk member and a bottom member is manufactured by the roll-feed type paper cup molding machine that punches a trunk member blank (10a) out of a trunk member roll (10) and molds the paper cup. In the paper cup molding machine, an irregular shape forming portion having an emboss roll is disposed between a roll supply portion and a trunk member blank punching portion. At the irregular shape forming portion, an irregular shape (30) adjusted to the shape of the trunk member blank (10a) to be punched out is formed on the trunk member blank (10a). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a paper cup provided with a concavo-convex shape, and in particular, relates to a paper cup provided with a concavo-convex shape capable of being provided with a concavo-convex shape at the same time as forming the paper cup.

  For forming a paper cup, generally, a body member blank is punched from a body member roll, and at the same time a cup is formed using a roll-feed type cup forming machine, and a body member sheet or body member roll is used in advance. There is a method of producing using a blank feed type cup molding machine that performs cup molding using a blank blank that has been punched.

  Then, for example, as shown in FIG. 4, the paper cup is formed by superposing one end edge (10b) of the fan-shaped body member blank (10a) on the other end edge (10c) (11). ) To form a cylindrical body member (12) that tapers downward, and a bottom member blank (13a) punched into a substantially circular shape separately from the bottom member roll (13). ) In the bottom member forming step (b) in which the peripheral edge portion (14) is erected downward, and the inner surface of the peripheral edge portion of the bottom member is bonded to the lower inner surface of the body member (c), Further, the lower end edge of the body member is folded inward so as to cover the peripheral edge of the bottom member to form a bent portion (16), and the bent portion (16) is joined to the outer surface of the peripheral edge of the bottom member. Annular leg forming step for forming the annular leg (17) d) Finally, the upper peripheral edge of the body member is wound outward or inward, and the body member and the bottom member are joined through each step of the mouth edge forming step (e) for forming the mouth edge (18). The paper cup (20) which has is produced.

  By the way, in the case of paper cups, for the purpose of giving newness to the appearance when products are displayed in stores, making the purchaser feel the freshness when picking up products, For the purpose of differentiating the touch from a metal can, it has been conventionally considered to provide an embossed portion in which the outer surface of the body member of the paper cup has an uneven shape (for example, Patent Document 1 and Patent Document 2). reference).

The said prior art document is shown.
JP2003-205928A. JP 2006-099576 A.

  However, the paper cup provided with the embossed part is a. When the embossing was provided and cut into a cup shape, paper dust was coming out. b. The contents eroded from the edge of the paper bonded to the inside, and there were problems with hygiene. The bond was weakened and the cup was broken. c. There was a step in the upper lip (lid adhering portion), resulting in a decrease in adhesion to the lid, and dust or the like entered the cup through the gap generated by the step, resulting in a productive problem. d. Since the top curl portion and the bottom curl portion are folded, the thickness is increased and the moldability is deteriorated. There was a problem such as.

  The present invention has been made in view of the above-described problems relating to a paper cup provided with a concavo-convex shape, and has a reduced amount of paper dust and molding defects, and is a roll-feed type paper cup molding that has high sealing performance with a lid. It is an object of the present invention to provide a paper cup provided with a concavo-convex shape provided with a concavo-convex shape using a machine.

  The invention according to claim 1 of the present invention is a paper cup comprising a barrel member and a bottom member produced by using a roll-feed type cup molding machine that punches a barrel member blank from a barrel member roll and at the same time forms a paper cup. The cup forming machine is provided with an uneven shape forming portion provided with an embossing roll between the roll supply portion and the body member blank punching portion, and the uneven shape forming portion has a shape of the body member blank to be punched. In addition, the paper cup is provided with a concavo-convex shape in which a concavo-convex shape is formed in the body member blank.

  As described above, according to the invention described in claim 1, the body member is formed by using a roll-feed type cup forming machine that punches out a body member blank from a body member roll and at the same time forms a paper cup. The cup forming machine is provided with an uneven shape forming portion provided with an embossing roll between a roll supply portion and a body member blank punching portion, and the body member blank to be punched in the uneven shape forming portion. In accordance with the shape, an irregular shape is formed on the body member blank, so that paper dust when punched with a cutting die can be greatly reduced.

  According to a second aspect of the present invention, in the first aspect of the invention, the concave-convex shape provided on the trunk member blank is formed at an edge of the trunk member blank, and the paper cup provided with the concave-convex shape It is.

  Thus, according to invention of Claim 2, since the uneven | corrugated shape provided in a trunk | drum member blank is formed in the edge of a trunk | drum member blank, when the density of paper goes up and it punches with a die cutter, paper dust Has the effect of being sharp and clean.

  The invention according to claim 3 is the uneven shape according to claim 1, wherein the uneven shape provided on the body member blank is formed only at an edge of the body member blank to be overlaid. Is a paper cup provided.

  As described above, according to the invention described in claim 3, since the concave and convex shape provided on the trunk member blank is formed only at the end edge of the trunk member blank to be overlapped, a certain amount of edge protection is not required. It is possible to increase the sealing performance.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, the concavo-convex shape provided on the trunk member blank is only at both corners of the upper edge where the top edge of the trunk member blank is formed. It is a paper cup provided with the uneven | corrugated shape characterized by being provided.

  Thus, according to invention of Claim 4, the uneven | corrugated shape provided in a trunk | drum member blank is provided only in the both corners of the upper edge where the edge part of the top part of a trunk | drum member blank is formed. Therefore, the level | step difference of the flange formed by crushing a mouth edge part can be eliminated.

  The invention according to claim 5 is the invention according to claim 1, wherein the uneven shape provided on the body member blank is formed only on the top and bottom edges of the body member blank. Is a paper cup provided.

  Thus, according to invention of Claim 5, since the uneven | corrugated shape provided in a trunk | drum member blank is formed only in the top part periphery and bottom part peripheral part of a trunk | drum member blank, an uneven | corrugated shape is the edge at the time of paper cup shaping | molding It can function as parting and bottom bending and can reduce molding defects.

  As described above, according to the present invention, by using a roll-feed type paper cup molding machine capable of simultaneously forming an uneven shape and forming a paper cup, the amount of paper dust generated and molding defects are small, and sealing with a lid material is performed. It is possible to produce a paper cup having a highly concavo-convex shape. In other words, the blank is easy to bend and squeezed easily by bending or squeezing or preliminarily forming a portion to which pressure is applied, so that it is possible to perform easy cup molding.

The present invention will be described in detail below based on one embodiment.
The paper cup provided with the concavo-convex shape of the present invention is, for example, as shown in FIGS. It is a paper cup (20) which consists of a trunk | drum member (12) and bottom member (15) produced using a cup molding machine.

  The cup molding machine is provided with an uneven shape forming part (not shown) provided with an embossing roll between a roll supply part (not shown) and a body member blank punching part (not shown). The shape forming part is a paper cup (20) provided with an uneven shape, wherein an uneven shape (30) is formed on the body member blank (10a) in accordance with the shape of the body member blank to be punched.

  And the uneven | corrugated shape (30) provided in a trunk | drum member blank is provided in the edge of a trunk | drum member blank (refer Fig.3 (a)), as shown in FIG. Provided only at the edge (see FIG. 3B), provided only at the upper corners where the top edge of the body member blank is formed (see FIG. 3C), or It can be provided only on the top edge and bottom edge of the trunk member blank (see FIG. 3D).

  By providing an uneven shape only on the edge of the body member blank that is to be overlaid, it will improve the sealing performance to some extent when sealing the lid with the cover material without edge protection on the edge of the body member blank. Can do.

  By providing the concavo-convex shape only at the corners of the upper end where the top edge of the body member blank is formed, the step of the flange formed by crushing the edge can be eliminated.

  By providing concave and convex shapes only on the top and bottom edges of the body blank, the concave and convex pattern functions as a lip formation when forming a paper cup and as a crease for bending the bottom, reducing molding defects during cup molding. can do.

It is a partial section explanatory view showing one example of a paper cup provided with the uneven shape of the present invention. It is a schematic explanatory view showing a situation in which an uneven shape is provided on the roll for body member, and the body member blank is punched out along the provided uneven shape, and (a) is a roll for body member before the uneven shape is provided. Yes, (b) is a state in which an uneven shape is provided on the roll for body member according to the shape of the body member blank, and (c) is a state in which the body member blank is punched along the uneven shape of (b) Indicates. (A)-(d) is a schematic explanatory drawing explaining the formation position of the uneven | corrugated shape provided in a trunk | drum member blank. It is model explanatory drawing which shows an example of the manufacturing process of a paper cup.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Roll for body members 10a ... Body member blank 10b ... One edge 10c ... The other edge 11 ... Body part bonding part 12 ... Body member 13 ... Bottom member roll 13a ... Bottom member blank 14 ... Peripheral part 15 ... Bottom member 16 ... Bending part 17 ... Annular leg 18 ... Mouth edge 20 ... Paper cup 30 ... Concave and convex forming part

Claims (5)

A paper cup consisting of a body member and a bottom member produced using a roll-feed type cup molding machine that punches out a body member blank from a body member roll and simultaneously performs paper cup molding,
The cup molding machine is provided with an uneven shape forming portion provided with an embossing roll between the roll supply portion and the body member blank punching portion, and the uneven shape forming portion is adapted to the shape of the body member blank to be punched. The paper cup provided with the uneven | corrugated shape characterized by an uneven | corrugated shape being formed in the trunk | drum member blank.   The paper cup provided with the concavo-convex shape according to claim 1, wherein the concavo-convex shape provided on the body member blank is formed at an edge of the body member blank.   The paper cup provided with the concavo-convex shape according to claim 1, wherein the concavo-convex shape provided in the body member blank is formed only at an end edge of the body member blank to be overlapped.   2. The uneven shape according to claim 1, wherein the uneven shape provided in the trunk member blank is formed only at corners at both upper ends where the top edge portion of the trunk member blank is formed. Paper cup provided.   2. The paper cup provided with the concavo-convex shape according to claim 1, wherein the concavo-convex shape provided in the body member blank is formed only at a top periphery and a bottom periphery of the body member blank.

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