JP2006082844A - Filling apparatus for roof-type paper container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roof-type paper container whose unsealability on use is improved without increasing costs. <P>SOLUTION: According to the paper container, a seal area 7 on the top 8 is formed at the container interior side 10 and the container exterior side 11 on a pair of side faces 9a, and at the container interior side 10 on the other opposite pair of side faces 9b. One side face 9c of one of the side faces 9a and the other opposite side faces 9b in contact with one of the side faces 9a form one area 15 (one area 15 on the top 8), which constitutes an easily unsealable content solution spout 16. The other side face 9d of the other of the side faces 9a and the other opposite side faces 9b in contact with the other side face 9d form the other area 17 (the other area 17 on the top 8). In the area 15 (one area 15 on the top 8) as the easily unsealable content solution spout 16, the amount of heat blast applied to the seal area 7 is made less than in the other area 17 to weaken the welding force of a thermoplastic resin, using a heat blast adjuster 18 fitted on the nozzle 5 of a filling apparatus. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a roof-type paper container filling device, and more particularly to a roof-type paper container filling device capable of easily adjusting the easy-openability of a paper container for storing beverages and other internal liquids.

  The top of a roof-type paper container for liquids such as milk and juice is required to have a reliable sealing property to prevent leakage of the internal solution. On the other hand, there is also a demand for an easily openable top so that it can be easily opened when drinking the internal solution.

  In order to satisfy these contradictory functions, the diameter and arrangement of the holes 65 of the nozzles 62, 63, 64 of the hot air device 60 in the conventional filling device of the roof paper container 66 are not shown in detail, as shown in FIG. Determined by fine adjustment. In the filling machine, the roof paper container 66 is inserted in the direction of the arrow so as to surround the nozzle 63, and the hot air is discharged from the nozzle hole 65 through the sealing region of the thermoplastic resin covered with the paper base material of the roof paper container 66. Then, the sealing region is crimped to form the top portion 67 of the roof paper container 66.

  However, even if the diameter and arrangement of the holes 65 of the nozzles 62, 63 and 64 of the hot air device 60 are finely adjusted in detail, there is a problem that the openability varies depending on the product (paper container to be used).

  For this reason, a method is known in which an anti-heat sealant is applied to the roof paper container 66 in advance to slightly reduce the sealing property and improve the opening property. Since it is necessary to apply a sealing agent, there is a problem that it is necessary to add a process.

Therefore, Patent Document 1 discloses a method of processing a paper substrate coated with a thermoplastic resin so that the top portion can be easily opened. According to Patent Document 1, by cutting away the thermoplastic resin in the region of the upper folding side wall on the opening side to weaken the sealing property, or by forming a pull tab for pulling when opening the paper substrate by half-cutting The top is easy to open.
JP-A-9-193828

  However, even the above method has a problem that a separate process for processing the paper substrate is required. Therefore, there has been a problem that the cost increases.

  Therefore, the present invention aims to provide a roof-type paper container that does not require a separate process for processing a paper base, eliminates the cost of the paper container, eliminates variations due to products, and improves openability. .

  This eliminates the need for a special anti-heat seal agent and can reduce the cost of the paper substrate. The added value of the filling device is increased.

  The invention of claim 1 is a roof-type paper container filling device formed by melting a sealing region with hot air discharged from a nozzle of a thermoplastic resin coated on a paper base material and crimping the sealing region, The top of the roof-type paper container is formed by folding a pair of opposing side surfaces of a paper base formed into a cylindrical shape on four sides into the container inside, and sandwiching between the other pair of opposing side surfaces, The seal region is formed on the container inner side and the container outer side with respect to the pair of side surfaces, and is formed on the container inner side with respect to the other pair of opposite side surfaces. One region (one region at the top) formed by another pair of opposing side surfaces in contact with the side surface is an easily openable inner solution spout, and this region as an easily openable inner solution spout (One region of the top) Compared to the other region (the other region at the top) formed by the other side surface of the pair of side surfaces and the other pair of opposite side surfaces in contact with the other side surface, the amount of hot air in the sealing region is reduced and heat is reduced. The nozzle is provided with a hot air adjusting device that weakens the welding force of the plastic resin.

  Thereby, the separate process for processing a paper base material becomes unnecessary. The hot air volume in the seal area can be adjusted for each product.

  The invention of claim 2 is the roof pattern paper container filling device according to claim 1, wherein the nozzles are respectively arranged on the container inner side of the one region of the top and the other region of the top, The nozzle for the one area of the top is provided with a hot air adjusting device.

  Thereby, the separate process for processing a paper base material becomes unnecessary. The hot air volume in the seal area can be adjusted for each product.

  A third aspect of the present invention is the paper container filling device according to the first or second aspect, wherein the hot air adjusting device is a variable orifice.

  Thereby, the amount of hot air in the seal area can be adjusted for each product.

  A fourth aspect of the present invention is the paper container filling device according to the third aspect, wherein the variable orifice is adjustable from the outside of the nozzle.

  Thereby, the hot air volume of the seal | sticker area | region for every product can be adjusted easily.

  A fifth aspect of the present invention is the paper container filling device according to the second to fourth aspects, wherein a nozzle is provided on each of the container inner surface sides of the one region of the top and the other region of the top. Both are characterized in that nozzles are respectively provided on the outer surface sides of the pair of side surfaces, and a rectifying plate for adjusting hot air for each nozzle is provided in a nozzle body in which each nozzle is incorporated.

  Thereby, distribution of the amount of hot air to each seal | sticker area | region can be adjusted reliably.

  According to the first aspect of the present invention, one region (one region of the top portion) formed by one side surface of the pair of side surfaces and another pair of opposite side surfaces in contact with the one side surface is easily opened. A region (one region at the top) of this easy-opening inner solution spout is opposite to the other side surface of the pair of side surfaces and the other side surface in contact with the other side surface. The nozzle is provided with a hot air adjusting device that reduces the amount of hot air in the sealing region and weakens the welding force of the thermoplastic resin as compared with the other region (the other region at the top) formed by the pair of side surfaces.

  For this reason, a separate process for processing the paper base material is not required, and the cost of the paper container is not increased. Since the amount of hot air in the seal area can be adjusted for each product, variations due to the product are eliminated, and the unsealing performance is reliably improved.

  According to invention of Claim 2, the said nozzle is each arrange | positioned with respect to the container inside side of the one area | region of the said top part, and the other area | region of a top part, and a hot-air adjustment apparatus is in the said nozzle for one area | region of the said top part. Provided.

  For this reason, a separate process for processing the paper base material is not required, and the cost of the paper container is not increased. Since the amount of hot air in the seal area can be adjusted for each product, variations due to the product are eliminated, and the unsealing performance is reliably improved.

  According to invention of Claim 3, the said hot air adjustment apparatus is a variable orifice.

  For this reason, since the amount of hot air in the seal region can be adjusted for each product, variations due to the product are eliminated, and the unsealing property is reliably improved.

  According to the invention of claim 4, the variable orifice is adjustable from the outside of the nozzle.

  For this reason, since the amount of hot air in the seal area for each product can be easily adjusted, variations due to the product are eliminated, and the unsealing property is reliably improved.

  In the invention of claim 5, a nozzle is provided on each of the container inner surface sides of the one region of the top and the other region of the top, and a nozzle is provided on the container outer surface side of the pair of side surfaces. A rectifying plate for adjusting hot air to each nozzle is provided in the nozzle body in which each nozzle is incorporated.

  For this reason, since the distribution of the hot air volume to each seal region can be adjusted reliably, the stability of the fine adjustment of the hot air volume by the hot air adjusting device 18 is increased, and the unsealing property is reliably improved.

<Configuration of filling device for roof pattern paper container>
Embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, a filling device 2 for a roof-type paper container 1 according to an embodiment of the present invention uses a thermoplastic resin 4 coated on a paper substrate 3, and hot air 6 formed by a heating element 70 serves as a nozzle 5. The seal area 7 is melted by discharging from the holes 19 and the top area 8 of the roof paper container 1 is formed by crimping the seal area 7.

  The top portion 8 of the roof-type paper container 1 is formed by folding a pair of opposed side surfaces 9a of the paper base 3 having four side surfaces 9 formed into a cylindrical shape into the container inner side 10 and another pair of opposed side surfaces 9b. It is formed by sandwiching.

 Here, the seal region 7 of the top 8 is formed on the container inner side 10 and the container outer side 11 with respect to the pair of side surfaces 9a, and on the container inner side with respect to the other pair of opposite side surfaces 9b. 10 is formed.

  The “one top region 15” formed by one side surface 9 c of the pair of side surfaces 9 a and another pair of opposite side surfaces 9 b in contact with the one side surface 9 a is an easily openable inner solution outlet 16. It is.

  The “one region 15 at the top” as the easily openable inner solution outlet 16 is composed of the other side surface 9d of the pair of side surfaces 9a and another pair of opposite side surfaces abutting against the other side surface 9d. The nozzle 5b is provided with a hot air adjusting device 18 that reduces the amount of hot air in the sealing region 7 and weakens the welding force of the thermoplastic resin, compared to the “other region 17 at the top” formed by 9b.

  Each nozzle 5 is integrally incorporated, and a nozzle body 21 is formed by detachably attaching to the nozzle hood 22 via a flange 20.

  In the nozzle body 21, there is provided a rectifying plate 23 for independent hot air adjustment for sending hot air to each incorporated nozzle. The heating element 71 is configured by the heating element 70 and the nozzle body 21 at the top of the nozzle body 21.

  Here, as shown in FIG. 1, the top part 8 of the roof pattern paper container 1 is slightly tilted inward toward the inside of the container. This is because the top part 8 has been folded in advance in a previous step (not shown). It is. Further, although not shown, a crease line (crease) for facilitating container formation is formed on the paper base 3 in advance. The roof-type paper container 1 is formed in a multi-layer structure in which a resin layer is coated on both side surfaces of the paper base 3, and a thermoplastic resin 4 such as polyethylene is used as the resin.

  As shown in FIG. 2 and FIG. 3, the nozzle 5 has a structure in which four independent nozzles (5a, 5b, 5c, 5d) are integrally formed. Corresponding to the outer surface side of the container, the nozzle 5b corresponds to the inner surface side of the container in the “one top region”, the nozzle 5c corresponds to the inner surface side of the container in the “other region of the top”, and the nozzle 5d Corresponds to the outer surface of the container.

  The nozzles 5a, 5d are formed by a convex bottom surface 29 and side surfaces 30, 32, 32, 35, 35 rising from the periphery of the bottom surface 29 at a height H, and each surface is formed by a thin plate. Here, the convex shape of the bottom surface 29 is a left-right symmetric pentagon, and a side 37 rises at a length T at a right angle from both ends 31 of a base 36 of length S, and further, a base from both corners 33 where the side 37 rises. It is a shape that connects vertices 34 having a height U from the base 36 on 36 vertical bisectors.

 The nozzles 5b and 5c are formed by a concave bottom surface 40 and side surfaces 41, 42, 42, 43, and 43 rising from the periphery of the bottom surface 40 at a height H, and each surface is formed by a thin plate. Here, the bottom surface 40 is a symmetric concave pentagon, and a side 46 having a length L rises at right angles from both ends 45 of a base 44 having a length M, and further from both corners 47 where the side 46 has risen. This is a shape that connects the apex 49 having a height N from the base 44 on the perpendicular bisector of the base 44.

  In the nozzles (5a, 5b, 5c, 5d), the nozzle 5a and the nozzle 5b are arranged with their convex and concave portions facing each other with a distance K, and the nozzle 5c and the nozzle 5d are also facing each concave and convex portion with a distance K. The nozzle 5b and the nozzle 5c are integrally formed sharing a side surface 41 rising along the bottom side 44.

  Here, the top 8 of the roof paper container 1 is inserted so as to surround the nozzle 5b and the nozzle 5c. At this time, the top portion 8 is inserted so as to be at the midpoint position of the nozzles 5a and 5b and between the nozzles 5c and 5d (the midpoint of the uneven distance K).

  Similarly, on the side surface where the nozzle 5b and the nozzle 5c do not face each other, the top 8 of the roof paper container 1 is inserted into the nozzle 5b and the nozzle 5c with a gap of (SM) / 2. Here, since the top 8 is inserted around the nozzle 5b and the nozzle 5c with the same gap, there is a relationship of (SM) / 2 = K / 2.

  The hot air adjusting device 18 provided in the nozzle 5b is a variable orifice that can rotate the rotating plate 51 freely around the shaft 52 and change the gap S between the rotating plate 51 and the side surface 43 of the nozzle 5b.

  The shape of the rotating plate 51 is substantially the same shape as the bottom surface 40 of the nozzle 5b. The shaft 52 is provided so as to penetrate both side surfaces 42 of the nozzle 5 b, and the penetrating position 53 is in the vicinity of the nozzle 5 c near the upper end portion of the side surface 42.

  Since the rotating plate 51 can be rotated by a handle 54 provided at the end of the shaft 52, the opening as the variable orifice is freely adjusted and set from the outside of the nozzle. The handle 54 is provided with an opening display panel and an opening fixing device (not shown), and can be fixed at a predetermined opening.

  Although not shown, the hole diameter and the arrangement of the holes 19 are finely adjusted and optimally determined.

  As shown in FIG. 4, the hot air is adjusted (decreased) by the hot air adjusting device 18 to melt the thermoplastic resin 4 on the container inner side 10 of the top portion 8. A seal region 7a (a seal region on the inside of the container) of the one region 15 "at the top is formed. Here, since the hot air adjusting device 18 does not work in the seal region 7b (the seal region on the outside of the container), the hot air cannot be adjusted (decreased), and a fixed hot air is always discharged.

  In addition, although not shown, the sealing area inside and outside the container in “the other top area 17” is also formed in the same area as the sealing area 7a in “one top area 15”. Since the hot air adjusting device 18 is not provided in the region 17 ”, the hot air cannot be adjusted (decreased), and the hot air fixed to the container is always discharged.

  As shown in FIG. 5, the filling device 2 for the roof-type paper container 1 according to the present embodiment is a mandrel in which a cylindrical paper base material 3 is first disposed at a molding station in a plane intersecting with the conveyor line by 90 degrees. The resin on the surface of the paper base 3 is melted by hot air or other heat source in a region where the bottom of the folded paper base 3 is formed by a mold for forming the bottom of the paper container. The bottom is pressure-bonded by applying pressure simultaneously with bending. And it supplies as the paper container 72 (empty container) by which the bottom part was formed on the conveyor line.

  Next, after filling the content liquid into the paper container 72 (empty container) sent to the filling station of the next process on the conveyor line, the upper part of the paper container 72 is heated by the heater 71 by moving on the conveyor. The upper part of the paper container 72 is compressed into a desired shape by a sealing machine at the sealing station, and the roof-shaped paper container 1 having the top 8 of the final shape is formed.

    By the time the filling solution is started into the paper container 72 at the filling station, the paper container 72 is lifted upward until the tip of the filling nozzle comes to a position close to the bottom of the paper container 72 (empty container). At the same time as the filling of the solution starts, the paper container 72 is lowered while being filled. This is because the drop of the inner solution when filling the inner solution is always kept at a minimum to prevent the inner solution from jumping and to prevent bubbles from being generated as much as possible.

<Operation of filling device for roof pattern paper container>
The roof pattern paper container 1 formed by the above method is opened by the procedure shown in FIGS. 6 (a), 6 (b), and 6 (c).

  First, the “top one region 15” of the top 8 as the inner solution outlet 16 is pushed out with a finger. At this time, since the concave portion 63 surrounded by the side surface 9c and the side surface 9b is a space in which a finger can be easily inserted, it is possible to easily expand the “one top region 15” in the state shown in FIG. it can.

  Furthermore, as shown in FIG.6 (c), it pushes with the finger | toe in the arrow P direction so that the ridgeline 61 where the side surface 9c and the side surface 9b cross may be narrowed down.

  Here, as described above, the sealing area 7a (sealing area inside the container) is formed by reducing the amount of hot air by the hot air adjusting device 18, so that the ridgeline 61 can be easily narrowed in the direction of the arrow P. The inner solution outlet 16 can be opened.

  Thus, according to this embodiment, a separate process for processing the paper substrate is not necessary. Therefore, the cost of the paper container does not increase. Since the amount of hot air in the seal area can be adjusted for each product, variations due to the product can be eliminated, and the opening performance can be improved reliably. Furthermore, since a pull tab or handle for opening is unnecessary, the cost does not increase. A special anti-heat seal agent is not required and the cost of the paper substrate can be reduced. And the added value of a filling device increases.

 The hot air adjusting device 18 is a variable orifice formed by the rotating plate 51, and the set value of the variable orifice is preferably determined in advance by a use manual. If a manual for use is provided, adjustment can be performed reliably and easily when the filling machine is started.

  The nozzle body is provided with a rectifying plate for adjusting the hot air for each nozzle, so that the hot air amount can be reliably distributed to each seal area, and the stability of the fine adjustment of the hot air amount by the hot air adjusting device 18 is increased. Will definitely improve.

  In addition, all the above-mentioned Examples show an example of the present invention, and needless to say, the present invention should not be limited to these.

  For example, if further fine adjustment is required for the hot air adjusting device 18, a hole for fine adjustment may be provided in the rotating plate 51. The rectifying plate 23 in the nozzle body 21 may be curved along the flow of hot air, or it is more preferable if the upstream end of the hot air of the rectifying plate 23 for adjusting hot air is curved to reduce resistance.

  In a situation where hot air adjustment by the hot air adjusting device 18 is not necessary, the state of the conventional nozzle configuration in which the hot air adjusting device 18 is not provided can be easily selected by positioning the rotating plate 51 substantially vertically.

It is a section perspective view of the nozzle body of the filling device of the roof paper container in the embodiment of the present invention. It is a perspective view of the nozzle of the filling device of the roof type paper container in the embodiment of the present invention. It is AA sectional drawing in FIG. 1 of the nozzle of the filling apparatus of the roof-type paper container in embodiment of this invention. It is a perspective view which shows the sealing area | region (7a, 7b) of the inner-solution outlet 16 by the filling apparatus of the roof-type paper container in embodiment of this invention. It is a schematic explanatory drawing of the filling apparatus of the roof-type paper container in embodiment of this invention. It is explanatory drawing of the opening order of the roof pattern paper container in embodiment of this invention, (a) is the state before opening, (b) is a perspective view which shows the state which expanded one side surface 9c of a pair of side surface 9a, ( c) is a perspective view showing a state in which one side surface 9c is pulled out and opened. It is a perspective view of the nozzle of the filling apparatus of the conventional roof-type paper container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roof type paper container 2 Filling device 3 Paper base material 4 Thermoplastic resin 5 Nozzle 6 Hot air 7 Sealing area 8 Top part 9 Side face 9a Side face 9b Side face 9c Side face 9d Side face 10 Container inner side 11 Container outer side 15 area | region (one area | region of top part) )
16 inner solution outlet 17 area (the other area at the top)
18 Hot air regulator

Claims (5)

A roof type paper container filling device formed by melting a sealing region with hot air discharged from a nozzle with a thermoplastic resin coated on a paper base material, and press-bonding the sealing region,
The top of the roof-type paper container is formed by folding a pair of opposing side surfaces of a paper base formed into a cylindrical shape on the four side surfaces into the inside of the container and sandwiched by another pair of opposing side surfaces,
The seal region at the top is formed on the container inner side and the container outer side with respect to the pair of side surfaces, and on the container inner side with respect to the other pair of opposite side surfaces,
One region (one region at the top) formed by one side surface of the pair of side surfaces and another pair of opposite side surfaces in contact with the one side surface is an easily openable inner solution outlet,
The region (one region at the top) as the easily openable inner solution spout is the other formed by the other side surface of the pair of side surfaces and the other pair of opposite side surfaces in contact with the other side surface. An apparatus for filling a roof-type paper container, wherein the nozzle is provided with a hot air adjusting device that reduces the amount of hot air in the sealing region and weakens the welding force of the thermoplastic resin as compared with the region (the other region at the top).   It is the filling apparatus of the roof-type paper container of Claim 1, Comprising: The said nozzle is each arrange | positioned with respect to the container inside side of the one area | region of the said top part, and the other area | region of a top part, For the one area | region of the said top part An apparatus for filling a roof-type paper container, wherein the nozzle is provided with a hot-air adjusting device.   3. The roof-type paper container filling apparatus according to claim 1 or 2, wherein the hot air adjusting device is a variable orifice.   4. The roof pattern container filling apparatus according to claim 3, wherein the variable orifice is adjustable from the outside of the nozzle.   The roof-type paper container filling device according to any one of claims 2 to 4, wherein nozzles are respectively provided on the inner surface side of the one region of the top and the other region of the top. Both of the pair of side surfaces are provided with nozzles on the outer side of the container, and a rectifying plate for adjusting hot air with respect to each nozzle is provided in a nozzle body in which each nozzle is incorporated. Filling equipment.

Images