JPH0487918A - Method and device for air-tight packaging solid soap - Google Patents

Abstract

PURPOSE:To prevent the moisture content of a piece of solid soap from evaporating by a method wherein the edges of a sheet of non-water permeable wrapping paper are overlapped along the longitudinal center line on the back face of the soap and bonded together by hot-melt adhesive to form them into a flat face, and the edges of the paper on the cut-end sides of the soap are folded and fixed by hot-melt adhesive to form them into flat face. CONSTITUTION:Edges 4 of a sheet of non-water permeable wrapping paper 1 corresponding to the longitudinal central line on the back face of a piece of solid soap 2 and parts corresponding to the cut-end 5 sides of the soap 2 are coated with hot-melt adhesive 7 at a previous step. The wrapping paper 1 is wounded around the soap 2 with the cut-ends 5 of the soap 2 remaining unwrapped, and the edges 4 of the wrapping paper 1 is overlapped along the longitudinal center line 011 the back face of the soap 2 and heated by a band heater 8 to melt the hot-melt adhesive 7. Then, the hot-melt adhesive 7 is cooled and solidified by a band cooler 10. In this fixing step, both edges of the wrapping paper 1 on the cut-end 5 sides of the soap 2 are folded to form an item 11 to be packaged. The folding step can be done by screws 9 located on both sides of the band heater 8. Then, the edges of the wrapping paper on the cut-end 5 sides of the soap 2 are heated and fuse-bonded to form them into flat faces. This heating is preferably done by plate heaters 14 which are located on both sides of a conveyer 12, that carries the article to be packaged, and arranged at certain distances so that the wrapping paper 1 on the cut-end 5 sides of the soap 2 can be press-bonded. Then, the cut-end 5 sides are cooled and solidified by coolers 20 which are preferably arranged in the same way as the arrangement of the heaters 14.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method and apparatus for airtight packaging of bar soap, and is intended to preserve bar soap for a long period of time without deterioration of quality.

BACKGROUND OF THE INVENTION If bar soaps, which have been widely used in the past, are left in their natural state, the water they contain will evaporate over time. As the moisture content of bar soap evaporates, it becomes thinner and smaller in appearance, and a space is formed between the bar soap and the wrapping paper.

Also, in terms of usability, it has the disadvantage that it foams poorly and becomes hard, resulting in a poor feeling of use.

Therefore, it is necessary to prevent the moisture contained in bar soap from evaporating, but conventional packaging for bar soap involves point-bonding or partial bonding of wrapping paper coated with bar soap at the polymerization part. However, with these methods, it is difficult to prevent the volatilization of the contained water. Particularly, the moisture contained in the bar soap was significantly volatilized due to poor packaging at the edges of the package formed at both ends of the bar soap.

Problems to be Solved by the Invention The present invention aims to solve the above-mentioned problems.The present invention aims to solve the above-mentioned problems by forming a wrapping paper for packaging bar soap from a moisture-impermeable material, and changing the packaging form to reduce the moisture content. By making it difficult for bar soap to volatilize, the aim is to prevent the volatilization of water in bar soap and to eliminate the conventional drawbacks in terms of appearance and usability.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a moisture-impermeable wrapping paper that covers the outer periphery of the bar soap, in the portion corresponding to the band of the bar soap and the portion corresponding to the edge of the bar soap. A hot melt that melts when heated is applied in a separate process, and this wrapping paper is wrapped around a bar of soap, leaving the edge part, so that it polymerizes in the band, and the polymerized part of the band is heated in a planar manner to form a hot melt. After melting the melt, the melted part is cooled and solidified, and in the process of attaching the band, the wrapping paper at the edge of the bar of soap is folded to form a packaged object, and the wrapping edge of this packaged object is folded to form a surface. The method is characterized in that the hot melt of the wrapping paper at the edge of the folded package is melted, heat-sealed in a planar shape, and then the heat-sealed portion is cooled and solidified.

Further, the apparatus for carrying out the first invention forms a moisture-impermeable wrapping paper by applying hot melt that melts when heated to positions corresponding to the band portion of the bar soap and the mouth portion of the bar soap. This wrapping paper is wound around a bar of soap to polymerize it, forming a strip heater for heating the bar in a planar manner. A strip cooler for solidifying the hot melt is formed adjacent to the strip heater in the direction of transport of the bar soap, a folding screw is positioned parallel to the strip cooler and the strip heater, and the folding screw is used to A packaged object is provided by covering the opening of a bar of soap by folding wrapping paper, and the packaging opening of the packaged object can be crimped to both sides of a transfer conveyor on which the packaged object is placed and transferred. A planar heater is positioned at a gap, and a planar cooler is positioned adjacent to the heater on both sides of the conveyor in the transfer direction at a gap that can contact the edge of the packaged object. be.

Further, the heater may include a side belt that moves at the same speed as the transfer speed of the transfer conveyor, on the side of the transfer conveyor of the heating element.

Further, the cooler may include a side belt that moves at the same speed as the transfer speed of the transfer conveyor, on the side of the transfer conveyor of the cooling body.

Function Since the present invention is configured as described above, in order to coat the bar soap in a water-impermeable state, first, the water-impermeable wrapping paper that covers the outer periphery of the bar soap is melted by heating. Apply hot melt. This hot melt is applied to the wrapping paper on the part corresponding to the strip of bar soap and the part corresponding to the edge of the bar soap, but the hot melt is melted by heating and creates a strong adhesive force, which is applied to the wrapping paper in the subsequent process. When gluing by folding, specify the application position so that the hot melt will not be exposed on the surface. Further, the hot melt is applied to the wrapping paper in a process separate from the packaging process, and is configured so that it does not develop adhesive strength until it is heated.

This wrapping paper is wound around a bar of soap, leaving the edge portion, and the band portion is polymerized. Then, after melting the hot melt by heating the overlapping part of the band in a planar manner with a band heater, the melted part is cooled and solidified with a band cooler formed adjacent to the band heater in the direction of transport of the bar soap. , fix the band. In addition, in the process of attaching the band, the wrapping paper at the mouth of the bar soap is simultaneously folded to form a packaged object.

The object to be packaged is placed on a transfer conveyor and transferred, and the wrapping edge of the object to be packaged is pressed onto planar heaters located on both sides of the transfer conveyor to heat the object in a planar manner.
The hot melt of the wrapping paper at the edge of the folded package is melted and heat-sealed into a planar shape.

Next, this object to be packaged is transferred by a transfer conveyor, and the edge of the object to be packaged is brought into contact with planar coolers located on both sides of the transfer conveyor in the transfer direction, and the heat-sealed part is cooled by the cooler. and solidify.

In addition, if the heater is formed by positioning a side belt that moves at the same speed as the transfer speed of the transfer conveyor on the side of the transfer conveyor of the heating element, it is possible to heat the edge of the package with the heater while moving on the transfer conveyor. , No frictional force is applied to the package edge, and no deformation, twisting, etc. occur in the package edge.

In addition, if the cooler is formed by positioning a side belt that moves at the same speed as the transfer speed of the transfer conveyor on the side of the transfer conveyor of the cooling body, it is possible to cool the edge of the package while the cooler moves along the transfer conveyor. , no frictional force is applied to the package edge, and the package edge does not become deformed or twisted.

Embodiment Below, one embodiment of the present invention will be described with reference to the drawings.
) is a wrapping paper that is made impermeable to water by providing an aluminum vapor-deposited layer on the surface of a polyethylene film and coating the surface of this aluminum vapor-deposited layer with stretched forriester. Part (4) and bar soap (2)
A hot melt (7) that melts when heated is applied in a separate process to the corresponding part of the small opening (5).
) has no adhesive properties at room temperature. Moreover, the application of this hot melt (7) to the wrapping paper (1) is carried out in the first step.
As shown in the figure, hot melt 1-(7) is applied only to the surface of wrapping paper 1), and after covering the outer periphery of bar soap (2) with wrapping paper (1), Make sure that the corresponding part (4) and the edge part (5) of the obi are not exposed.
The coating is applied only to the corresponding part 6) that is folded into the inner surface by the coating.

By wrapping this wrapping paper (1) around the bar of soap (2) leaving the edge part (5) as shown in Figures 2 and 3, the wrapping paper (1) is wrapped around the bar of soap (2) as shown in Figure 4. do.

Then, the overlapping part of this band is heated by a band heater (8).
The hot melt (7) is melted by heating in a planar manner.

The band heater (8) is formed by heating the surface of a conveyor or the like so that it can heat the bar soap (2) covered with the wrapping paper (1) while being transferred. As the hot melt 1-(7) is heated and melted, the bar soap (2) is transferred, and the melted portion is cooled and solidified in the band cooler (10). This band cooler (10) is a band heater (
8), on the surface of a cooling body formed in the direction of transport of the bar soap (2) and cooled by a cooling pipe through which cooling water flows,
The slidable positioning of the belt conveyor makes it possible to transport the soap bars (2).

In addition, in the process of attaching the band, the edge part (5) of the bar soap (2) is
The wrapping paper (1) is folded to form a packaged object (11). This folding is done by using the screws (9) formed on both sides of the band heater (8) to fold in the wrapping paper (1) on one side of the edge part (5) and fold it in the same way in the next step, as shown in Figure 5. With the screw (19) for
As shown in Figure 6, the other wrapping paper (1) of the edge part (5)
Fold in. Also, as shown in Figure 7, after folding the lower wrapping paper (1) of the edge part (5), fold the upper wrapping paper (1).
) is folded as shown in FIG. 8 to form a packaged object (11).

Further, a transfer conveyor (12) is located in the transfer direction of the band cooler (8) and carries the packaged object (11) thereon.
), planar heaters (14) are placed at a distance that allows the packaging end (13) of the packaged object (11) to be crimped. Manako's heater (14) is composed of a preheating heater (15) for preheating, a high temperature heater (16), and a transfer conveyor (14) for the heating element (17).
A side bell (18) that moves at the same speed as the transfer speed of the transfer conveyor (12) is formed on the 2) side. Then, the packaging edge portion (13) of this packaged object (11) is
The hot melt (7) of the wrapping paper (1) in the folded packaging edge (13) is melted by heating in a planar manner through the side belt (18) without applying any frictional force, and the hot melt (7) of the wrapping paper (1) in the folded packaging edge (13) is melted into a planar shape. Thermal fusion is carried out by heating the packaged object (11) via a side belt (18) that moves at the same speed as the transfer speed of the transfer conveyor (12). , no sliding frictional force is applied to the packaging edge (13), and the packaging edge (13) is not deformed by sliding friction, but the packaging edge (13) is as designed.
enables thermal fusion of

Next, the heat-sealed package edge (13) is cooled and solidified using a cooler (20). This cooler (20
) moves at the same speed as the transfer speed of the transfer conveyor (12) to the transfer conveyor (12) side of the cooling body (21) cooled by a cooling pipe through which cooling water flows, like the band cooler (10). It is constructed by forming a side belt (22). And the above heater (14)
Similarly, the package edge (13) can be cooled and solidified as designed without deforming the package edge (13) due to sliding friction.

Effects of the Invention The present invention is based on the above-mentioned method.A moisture-impermeable wrapping paper is polymerized at the band portion and fixed in a planar shape using hot melt, and the wrapping paper at the edge is folded to form a planar shape using hot melt. Since the bar soap is fixed to the packaging paper, the water-impermeable packaging maintains its airtightness and prevents moisture from evaporating, resulting in a thinner and smaller appearance and a space between it and the wrapping paper. There is nothing that can be done. Also, in terms of usability, the foaming at the time of manufacture and the good feeling of use can be maintained for a long period of time.

In addition, since the above-mentioned surface fixation is done by hot melting, the airtightness of the bar soap can be improved compared to the conventional method of hot melting the resin-laminated wrapping paper itself and bonding points or parts. It is possible to significantly increase the water content and effectively prevent the volatilization of the contained moisture.

In addition, if a side belt that moves at the same speed as the transfer speed of the transfer conveyor is placed on the transfer conveyor side of the heater, when the heater heats the package edge while moving on the transfer conveyor, frictional force will be applied to the package edge. There is no chance of deformation or twisting of the package edge.

In addition, if the cooler is placed on the transfer conveyor side with a side belt that moves at the same speed as the transfer speed of the transfer conveyor, when the cooler cools the package edges while moving on the transfer conveyor, frictional force will be applied to the package edges. There is no possibility of deformation or twisting of the package edge.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and are shown in FIGS. 1 to 8.
The figure is a perspective view showing the process of packaging bar soap with wrapping paper, and FIG. 9 is a plan view showing the positional relationship between the heater and the cooler. (1)...Wrapping paper (2)...Bar soap (4
)... Corresponding part (5)... Edge part (6)
... Corresponding part (7) ... Hot melt (8) ...
・Strip heater (10)... ・Strip cooler (11)・
...Packaged object (12)・Transfer conveyor (13)・
・・Packaging edge (14)・・Heater (17)・
... Heating element 18) ... Side belt (20)
...Cooler (2I) ...Cooling body (22)
・・Side belt figure figure figure figure figure figure 〆

Claims (4)

[Claims] (1) A hot melt that melts when heated is applied in a separate process to the area corresponding to the band of the bar soap and the area corresponding to the edge of the bar soap of the moisture-impermeable wrapping paper that covers the outer periphery of the bar soap,
This wrapping paper is wound around a bar of soap leaving the edge part, so that it polymerizes at the band part, and the polymerized part of this band part is heated in a planar manner to melt the hot melt, and then the melted part is cooled and solidified. In this step of attaching the band, the wrapping paper at the edge of the bar soap is folded to form a packaged object, and the wrapping edge of this packaged object is heated in a planar manner, and the folded edge of the package is wrapped. A method for airtight packaging of bar soap, characterized by melting paper hot melt, heat-sealing it in a planar shape, and then cooling and solidifying the heat-sealed portion. (2) Apply hot melt that melts when heated to positions corresponding to the band of the bar soap and the mouth of the bar soap to form a water-impermeable wrapping paper, and wrap this wrapping paper around the bar soap. A band heater is formed to planarly heat the polymerized band, and this band heater is formed to be able to transport solid soap, and a band cooler is used to solidify the hot melt heated and melted by the band heater. is formed adjacent to the strip heater in the direction of transport of the bar soap, and a folding screw is positioned parallel to the strip cooler and strip heater, and this folding screw is used to open the small end of the bar soap and wrap the wrapping paper. An object to be packaged is provided by folding and covering the object, and planar heaters are placed on both sides of a transfer conveyor on which the object to be packaged is placed and transferred, at a distance that allows the opening of the package to be crimped. An airtight packaging device for bar soap, characterized in that a planar cooler is located on both sides of the transfer conveyor adjacent to the heater in the transfer direction, with a space that allows the cooler to come into contact with the edge of the packaged object. (3) The airtight packaging device for bar soap according to claim 2, wherein the heater has a side belt that moves at the same speed as the transfer speed of the transfer conveyor, located on the side of the transfer conveyor of the heating element. (4) The airtight packaging device for bar soap according to claim 2, wherein the cooler has a side belt that moves at the same speed as the transfer speed of the transfer conveyor, on the side of the transfer conveyor of the cooling body.