JP2006272820A - Forming device of cylindrical paper container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the forming device of a cylindrical paper container, in which a cylindrical barrel part can be easily housed in a barrel part holder even if a folder-gluing error exists in a folder-glued barrel member and, at the same time, a lid forming is possible with no swelling of the outer periphery of the barrel part holder in the forming device of the cylindrical paper container equipped with lid-forming parts. <P>SOLUTION: In this forming device of the cylindrical paper container composed of the barrel part holder 50 and lid-forming female dies 40 and lid-forming male dies 44 fitting in the lid-forming female dies provided at both the side ends of the device under the condition that the folder-glued cylindrical barrel part 10 is held in the barrel part holder 50, a disk-like lid member 30a is set in the opening part 42 of the lid-forming female die 40 at one side end and a disk-like bottom member 20a is set in the opening part 42 of the lid-forming female die 40 at the other side end, the barrel part holder 50 holds only the intermediate part 10c of the folder-glued cylindrical barrel part 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cylindrical container formed of a paper-based laminate material, that is, an apparatus for forming a cylindrical paper container in place of a metal can, and in particular, an inner surface of a cylindrical body constituting the cylindrical paper container The present invention relates to a forming apparatus for a cylindrical paper container provided with a lid forming portion for fitting and sticking while forming a circular tray-like bottom portion and a lid portion.

  Conventionally, metal cans have been widely used as secondary containers for confectionery such as individually packaged chocolates and strawberries, or as containers for beverages such as fruit juices, vegetable juices, teas, and coffee. From the viewpoint, a cylindrical paper container formed of a laminated material mainly composed of paper has been put into practical use as an alternative container for this metal can.

  Among the conventional cylindrical paper containers, as an example of a secondary container for confectionery, for example, as shown in the perspective view of FIG. 1A and the side sectional view of FIG. The circular tray-shaped bottom portion (20) is fitted and adhered to the lower end of the cylindrical body portion (10) having a printed layer on the surface, and the circular tray-shaped lid portion (30) is fitted to the upper end. There is a cylindrical paper container (1) in which an opening cut line (16) is engraved at the top of the cylindrical body (10).

  Alternatively, as an example of a beverage container, for example, as shown in the perspective view of FIG. 1 (a) and the side cross-sectional view of FIG. 1 (b), a cylindrical body (10) whose main body is paper and whose inner surface is polyethylene. A circular tray-like bottom part (20) is attached to the lower end of the tape, a tab tape (32) is attached to the upper end, and a circular tray-like lid part (30) in which a drinking mouth (34) is engraved is fitted and attached. In addition, there are some that are incurled and tightened at the upper and lower ends.

  The production of the cylindrical paper container is mainly made of paper, cuts the roll-shaped body member, passes through edge pro-seal (edge leakage prevention treatment), etc., if necessary, and is sacked to form a cylindrical body (10 ), And a circular tray-like lid (30) is fitted on the upper inner surface of the cylindrical body (10), and a circular tray-shaped bottom (on the lower inner surface of the cylindrical body (10)). 30) A method is generally used in which a cylindrical paper container (1) is obtained by incurring and tightening at the upper and lower ends as required (in the case of a beverage container) through a lid forming portion for performing fitting and sticking. . Here, the lid refers to the circular tray-shaped lid (30) and the circular tray-shaped bottom (20).

  The lid forming part will be described in more detail. For example, as shown in the side sectional view of FIG. 5A, a cylindrical body holder (50), and a lid forming female die (40) on both side ends thereof. The lid forming male mold (44) is fitted in the lid forming female mold (40), and the body holder (50) has the same length as the body holder (50). The cylindrical trunk | drum (10) sack pasted and opened (opening) of (H) is hold | maintained.

  Then, in the opening (42) of the lid forming female die (40) at one end thereof, a mental lid member (30a) is placed so as to close the opening (42), and the other side is placed. A mental bottom member (20a) is placed in the opening (42) of the lid-shaped female die (40) at the end so as to close the opening (42).

Further, for example, as shown in FIG. 5 (b), the body holder (50) holding the cylindrical body (10) is fitted to the lid-shaped female dies (40) at both ends. At the same time, when the lid-molded male mold (44) at both ends is inserted into the opening (42) of the lid-molded female mold (40), the mental lid member (30a) shown in FIG. The bottom member (20a) is shaped as shown in FIG.
As shown in FIG. 5B, for example, as shown in FIG. 5C, while forming into a circular tray-like lid portion (30) and a circular tray-like bottom portion (20), as shown in FIG. The cylindrical body (10) is pushed into the cylindrical body (10), and the circular tray-shaped lid (30) and the circular tray-shaped bottom (20) are fitted and adhered to predetermined positions.

  However, for example, as shown in the front view of FIG. 3, the body member (10a) having the seal portion (18) on the side edge and being sack pasted has a sack pasting error of about 0.3 to 1 mm between the top and bottom. (K) is generally present, and this sack pasting error (K) appears in the outer peripheral dimension of the cylindrical body (10) when the sack pasted body member (10a) is opened, and the outer periphery thereof. There is a problem that a thick part can be formed in the cylindrical body holder (50), or the outer periphery of the body holder (50) swells when it is forcibly stored. In this case, there is a problem in that it is impossible to fit the lid molding female die (40) and the lid (circular tray lid portion or the like) cannot be molded.

  The present invention solves the problems of the prior art, and the problem is that a circular tray bottom and a lid are formed on the inner surface of a cylindrical body constituting a cylindrical paper container instead of a metal can. In a cylindrical paper container molding apparatus equipped with a lid molding part that fits and sticks while molding, even if there is a sack pasting error of about 0.3 to 1 mm between top and bottom on the sack pasted body member, the cylinder The cylindrical body can be easily accommodated in the body holder that holds the body and there is no problem that the outer periphery of the body holder swells. Therefore, a circular tray is formed on the inner surface of the cylindrical body. An object of the present invention is to provide an apparatus for forming a cylindrical paper container provided with a lid forming portion that can be fitted and stuck while forming a bottom portion and a lid portion.

  In order to achieve the above-mentioned object in the present invention, first, in the invention of claim 1, a cylindrical body holder, a lid-molded female mold on both side ends thereof, and a lid-molded female mold are fitted. A cylindrical body portion that is sack pasted and opened is held in the body portion holder, and the opening portion of the lid shape female die at one end thereof is provided in the body portion holder. A lid-shaped lid member is placed so as to close the opening, and a lid-shaped bottom member is placed so as to close the opening in the opening of the lid forming female mold on the other end. In a cylindrical paper container molding apparatus provided with a section, the barrel holder is configured to hold only the middle part of the cylindrical trunk that is sack pasted and unfolded. It is a device.

  In the invention of claim 2, the intermediate part of the cylindrical body part held by the body part holder is at the center side of the part where at least the circular tray-like lid part and the bottom part are fitted and adhered. The cylindrical paper container forming apparatus according to claim 1.

  Since this invention is the above structure, there exist the following effects.

  In other words, according to the first aspect of the present invention, in the cylindrical paper container molding apparatus having the lid molding section, the trunk holder is held in the middle part of the cylindrical trunk that is sack pasted and opened. Therefore, even if there is a sack pasting error of about 0.3 to 1 mm between the top and bottom of the sack pasted body member and there is a thick part on the outer periphery of the cylindrical body part, The cylinder holder can be easily stored in the holder, or the outer periphery of the cylinder holder does not swell even when the cylinder body having a changed outer periphery is stored. It can be set as the cylindrical paper container shaping | molding apparatus provided with the lid shaping | molding part which can carry out fitting sticking, shaping | molding a circular tray-shaped bottom part and a circular tray-shaped lid part.

  Furthermore, according to the second aspect of the present invention, the intermediate part of the cylindrical body part held by the body part holder is at the center side of the part where at least the circular lid part and the bottom part are fitted and adhered. As a result, there is no body holder in the part to be fitted and stuck, so that the body holder does not swell, and therefore the cylindrical body part that is stored and held in the body holder is circular. It can be set as the cylindrical paper container shaping | molding apparatus provided with the lid shaping | molding part by which a tray-like cover part and a bottom part are easily fitted and stuck.

  Therefore, the present invention exhibits excellent practical effects as a molding device for a cylindrical paper container that contains individually packaged confectionery such as chocolate or beverages such as juice and is formed of a paper-based laminated material. To do.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is an explanatory view showing an example of a cylindrical paper container obtained by the cylindrical paper container molding apparatus of the present invention, and FIG. 2 is a cylindrical shape obtained by the cylindrical paper container molding apparatus of the present invention. It is explanatory drawing which shows the other example of a paper container. 3 is an explanatory view showing a part of the cylindrical paper container molding apparatus of the present invention, and FIG. 4 is an example of a cylindrical body member used in the cylindrical paper container molding apparatus of the present invention. FIG. 5 is an explanatory view showing an example of a cylindrical body member used in the cylindrical paper container forming apparatus of the present invention in a side cross section.

  In the present invention, for example, as shown in the perspective views of FIGS. 1 (a) and 2 (a), a circular body is formed at the upper end of a cylindrical body (10) formed by sacking with a laminated material mainly composed of paper. The present invention relates to a forming apparatus for manufacturing a cylindrical paper container (1) as an alternative to a metal can having a lid (30) and a circular bottom (20) fitted and adhered to the lower end.

  As shown in the side sectional view of FIG. 3 (a), the invention according to claim 1 includes a cylindrical body holder (50), a lid-molding female die (40) at both ends thereof, and the lid-molding. It is a lid-molded male mold (44) fitted in the female mold (40), and a sack is applied to the body holder (50) as shown in the front view of FIG. The trunk member (10a) is raised (opened), the raised cylindrical trunk (10) is held, and the opening (42) of the lid forming female die (40) at the right end thereof is A mental lid member (30a) is placed so as to close the opening (42), and the opening (42) of the lid forming female die (40) at the left end is closed. In a cylindrical paper container molding apparatus provided with a lid molding part (100) on which a mental bottom member (20a) is placed The lid forming part that holds only the middle part (10c) of the cylindrical body part (10) in which the body part holder (50) is sack pasted and opened, and that the left and right end parts (10b) are not held (100) A cylindrical paper container molding apparatus.

  In the invention according to claim 2, for example, as shown in the side sectional view of FIG. 3 (c), the intermediate portion (10c) of the cylindrical body (10) held by the body holder (50). Of a cylindrical paper container provided with a lid forming portion (100) with the circular tray-like lid portion (30) and the circular tray-like bottom portion (20) being fitted and adhered to the center (30c, 20c). It is a molding device.

As described above, in the apparatus for forming a cylindrical paper container provided with the lid forming portion, for example, as shown in FIG. 2 (a), the cylindrical body in which the body holder (50) is sack pasted and opened. Since only the intermediate portion (10c) of the portion (10) is held, as shown in FIG. 4, even if the sack pasting error (about 0.3 to 1 mm between the top and bottom on the sack pasted body member (10a)) K), even if the outer periphery of the cylindrical body part (10) changes, the cylindrical body part (10) whose outer periphery has changed changes from the narrower side to the body part holding tool (50) for holding it. There is no problem that the outer periphery of the body holder (50) in which the cylindrical body part (10) in which the outer periphery has been changed can be easily stored or in which the outer periphery has changed is expanded, and thus the cylindrical body part (10). A circular tray-like bottom (20) and a circular tray-like lid (30 It can be a molding apparatus of a cylindrical paper container with a lid forming portion (100) which can be fitted stuck while molding.

  Also, for example, as shown in FIG. 3 (c), an intermediate portion (10c) of the cylindrical body (10) held by the body holder (50) is replaced with a circular tray-like lid (30) and a circular tray. Since the portion (30c, 20c) to be fitted and stuck does not have the body holder (50) by setting the shape bottom portion (20) to the center side from the portion (30c, 20c) to be fitted and stuck. Even if there is a sacking error (K) of about 0.3 to 1 mm between the top and bottom of the sack-fitted body member (10a), the outer periphery of the cylindrical body part (10) changes. The body holder (50) that holds the cylindrical body (10) does not swell, and therefore the circular tray is placed on the cylindrical body (10) housed and held in the body holder (50). The lid (30) and the circular tray bottom (20) are easily fitted and pasted It can be a molding apparatus of a cylindrical paper container with lid forming portion (100) to be.

  Hereinafter, molding of a cylindrical paper container using the cylindrical paper container molding apparatus of the present invention will be described in detail.

  First, the body member (10a) attached with a sack as shown in FIG. 4 is opened (opened) to form a cylindrical body (10) as shown in FIG. 3 (a), and this cylindrical body ( Only the intermediate part (10c) of 10) is housed and held in the body part holder (50).

  A hot melt adhesive (not shown) is applied to the inner surface of both side tips (10b) of the cylindrical body (10) in this state in the case of a secondary container for individually packaged confectionery.

  A lid forming female die (40) and a lid forming male fitted in the lid forming female die (40) at both ends of the body holder (50) holding the cylindrical body (10). There is a mold (44), and in the opening (42) of the lid forming female mold (40) on the right end thereof, a mental lid member (30a) is placed so as to close the opening (42), In the opening (42) of the lid forming female die (40) at the left end, a mental bottom member (20a) is placed so as to close the opening (42).

  Subsequently, as shown in FIG. 3 (b), both end portions (10b) of the cylindrical body portion (10) are fitted to the peripheral edge of the opening (42) of the lid forming female die (40), and at the same time, The lid-shaped male mold (44) has a lid-shaped lid member (30a) and a men-shaped bottom member (20a) at the opening (42) of the lid-shaped female mold (40). Inserted into the bottom while molding.

  Further, as shown in FIG. 3 (c), a lid-shaped male mold (44) is inserted to form a circular tray-shaped lid (30) and a circular tray-shaped bottom (20), and a cylindrical body (10 The circular tray-like lid portion (30) and the circular tray-like bottom portion (20) are fitted and attached to predetermined positions (parts to be attached (30c, 20c)) of both ends of the cylindrical paper container And

  In the production of the cylindrical paper container (1) as described above, for example, as shown in FIG. 2 (b), incurles are formed on the upper and lower ends of the cylindrical body (10) in the case of a beverage container. When it is necessary to apply and tighten, it can be performed on a separate line from the lid forming portion (100) of this forming apparatus.

Further, in the case of individually wrapped chocolate, for example, as shown in FIG. 3 (a), only the middle part (10c) of the cylindrical body part (10) is placed in the body part holder (50). After storing and holding, hot melt adhesive is then applied, and the circular tray-shaped lid (30) and circular tray-shaped bottom (20) are fitted and adhered as shown in FIG. And sealed to make a product.

  Also, in the case of beverages such as juice, filling is performed in a cylindrical paper container (1) that has undergone the above-described incurl and wrapping process using a separate device in a sterile room. For example, a circular shape as shown in FIG. The product is filled from a drinking mouth (34) carved in the lid (30), and the drinking mouth (34) is sealed with a tab tape (32) to obtain a product.

  Below, the material etc. of the cylindrical paper container (1) obtained with the simple shaping | molding apparatus of the said cylindrical paper container are demonstrated.

As the trunk member (10a) in the case of constituting the cylindrical paper container (1) as the secondary container for the confectionery, a printing layer is applied to the surface of the paper substrate such as ivory of about 200 g / m ^2. A glossy varnish layer for protecting the printed layer and giving glossiness is applied, and two stamped lines and an opening cut line (16) are applied.

  Further, the bottom member (20a) and the lid member as the secondary container have substantially the same configuration as the cylindrical body member (10a), except that the stamped line and the opening cut line are not provided. It has become.

  Furthermore, as a hot melt adhesive to be applied to the upper and lower inner surfaces of the cylindrical body (10) in the case of forming the cylindrical paper container (1) as a secondary container for the confectionery, a thermoplastic resin is compared. The composition is composed mainly of an ethylene / vinyl acetate copolymer (EVA), which includes a wax, a tackifier resin, a plasticizer, a filler, and the like. It is blended. A carton sealing type having a softening point of 103 to 104 ° C. and a viscosity of 1,000 / 170 cP / ° C. or 750 to 850/180 cP / ° C. is preferably used.

Moreover, as a trunk | drum member (10a) in the case of comprising the cylindrical paper container (1) as a container for beverages such as juice, for example, as shown in the laminated side sectional view of FIG. 5, a paper of about 320 g / m ² is used. A printed layer (72) is applied to the surface of the substrate (70), a polyethylene layer (74) for protecting the printed layer (72) and providing water resistance is applied, and a sand polyethylene layer ( 75), a gas barrier layer (76) is applied, and a polyethylene layer (74) in consideration of food hygiene is laminated on the innermost surface.

  The gas barrier layer (76) is for preventing oxidation of beverages and the like. For example, an aluminum foil having a thickness of about 10 μm is used. However, in view of recent environmental problems, this cylindrical paper container (1) is used. The aluminum foil used as the gas barrier layer (76) in recycling or disposal of wastewater is extremely difficult to separate and collect, and even after disposal, the aluminum foil remains, causing environmental destruction and incineration. During processing, there are problems such as damaging the incinerator, generating toxic gas from the incineration ash at the landfill site, and in addition, it is not possible to use a metal detector that inspects metal contamination. Recently, instead of the aluminum foil, silicon oxide, aluminum oxide or magnesium oxide is formed on the surface of a plastic substrate (for example, about 12 μm thick). Inorganic oxides such as vacuum, physical vapor deposition (PVD) such as vacuum deposition, sputtering, or chemical vapor deposition (CVD) such as plasma chemical vapor deposition, photochemical vapor deposition, etc. A transparent gas barrier film formed by forming a vapor-deposited film of the inorganic oxide has been used as a gas barrier layer (76).

Further, the cylindrical bottom member (20a) and the mental lid member (30a) as the beverage containers are the above cylindrical body members, except that the paper base (70) is about 200 g / m ^2. (10a) has almost the same configuration, and the lid member (30a) is generally provided with a drinking mouth (34).

Further, the tab tape (32) for sealing the drinking mouth (34) is not particularly limited. For example, printing is performed on the surface of paper having a basis weight of about 80 g / m ² , and a thickness of 12 μm is formed thereon. A polyethylene terephthalate film is applied, a transparent barrier layer in which a vapor deposition thin film such as aluminum oxide is applied to a polyethylene terephthalate film having a thickness of 12 μm is applied to the back surface, and a sealant layer made of unstretched polypropylene is applied to the innermost surface. Those are preferably used.

  Furthermore, as a hot melt adhesive applied to the upper and lower inner surfaces of the cylindrical body (10), it is applied by heating and melting a thermoplastic resin at a relatively low temperature (200 ° C. or less). An ethylene / vinyl acetate copolymer (EVA) is mainly used, and a wax, a tackifier resin, a plasticizer, a filler, and the like are blended therein. A carton sealing type having a softening point of 103 to 104 ° C. and a viscosity of 1,000 / 170 cP / ° C. or 750 to 850/180 cP / ° C. is preferably used.

It is description of an example of the cylindrical paper container obtained with the shaping | molding apparatus of the cylindrical paper container of this invention, (a) is the perspective view, (b) is the sectional side view. It is description of the other example of the cylindrical paper container obtained with the shaping | molding apparatus of the cylindrical paper container of this invention, (a) is the perspective view, (b) is the sectional side view. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an example of a part of a cylindrical paper container molding apparatus according to the present invention, in which (a) is a side sectional view showing a state before lid molding, and (b) is a state during molding. It is a sectional side view shown, (c) is a sectional side view which shows the state after shaping | molding. It is a front view which shows an example of the sack pasted trunk member inserted in the shaping | molding apparatus of the cylindrical paper container of this invention. It is explanatory drawing which represented the example of the trunk | drum member used for the shaping | molding apparatus of the cylindrical paper container of this invention by the side cross section. An example of a part of a conventional cylindrical paper container molding apparatus will be described. (A) is a side sectional view showing a state before lid molding, and (b) shows a state during molding. It is side sectional drawing, (c) is a side sectional view which shows the state after shaping | molding.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cylindrical paper container 5 ... Support stand 6 ... Movement plate 10 ... Cylindrical trunk | drum 10a ... Cylindrical trunk | drum member 10b ... End part 10c of cylindrical trunk | drum member ... Middle of a cylindrical trunk | drum member Section 16 ··· Opening cut line 20 · · · Circular tray-shaped bottom portion 20a · · · Menco-shaped bottom member 30 · · · Circular tray-shaped lid portion 30a · · · Mental-shaped lid member 32 · · · Tab tape 34 · · · Drinking mouth 40 · · · ······························································································································································· Layer 76 ... Gas barrier layer 100 ... Lid molding part H ... Length of cylindrical body K ... Sack pasting error

Claims (2)

  A cylindrical barrel holder, a lid-molded female mold on both side ends thereof, and a lid-molded male mold fitted in the lid-molded female mold. A box-shaped cylindrical body is held, and a lid-shaped lid member is placed in the opening of the lid forming female mold on one side end so as to close the opening. In the forming apparatus of the cylindrical paper container provided with a lid forming portion on which a menso-shaped bottom member is placed so as to close the opening, the body holder is attached to the opening of the forming female mold. An apparatus for forming a cylindrical paper container, characterized in that it holds only the intermediate part of the cylindrical body part that has been opened.   The cylindrical part according to claim 1, wherein an intermediate part of the cylindrical body part held by the body part holding tool is at a center side from a portion where at least the circular tray-like lid part and the bottom part are fitted and adhered. Paper container molding equipment.

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