JP2002120864A - Packaging for nonwoven fabric roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging for packaging a plurality of nonwoven fabric rolls by a polymer sheet in which no water control is required and no problems of odor are generated. SOLUTION: The plurality of nonwoven fabric rolls 10 are arranged continuous to each other so that side surfaces are tightly brought into contact with each other, and at least a part of each of both end faces of the nonwoven fabric rolls 10 is wrapped in a completely opened condition to the atmosphere by the polymer sheet 14 with both ends in the longitudinal direction thereof heat-bonded in a cylindrical shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package formed by wrapping a roll of nonwoven fabric such as dry pulp nonwoven fabric with a polymer sheet such as a polyethylene film.

[0002]

2. Description of the Related Art Dry pulp nonwoven fabric used for kitchen paper and the like is manufactured by a so-called air lay method. That is, the roll pulp is disintegrated into short fibers, conveyed to a cylindrical screen by an air flow, and formed into a sheet under the spraying of an emulsion of an adhesive such as a vinyl-based binder as a binder. It is wound on a roll of appropriate width and diameter and supplied to the market.

[0003] Dry pulp nonwoven fabric rolls are usually supplied to consumers in a state of being sealed and packaged in a bag-like material formed of a polymer sheet such as a polyethylene film. However,
The dry-type nonwoven fabric roll packed in a bag has a problem that an unpleasant odor may be generated when the roll is taken out of the bag. This off-flavor is caused by the odor component in the adhesive such as vinyl used as a binder used in the production of dry pulp non-woven fabric evaporating due to the evaporation of moisture in the non-woven fabric. It is said that the odor is released at once when the bag is opened due to the inside of the bag.

Japanese Patent No. 2,845,126 discloses a dry pulp nonwoven fabric package of a type sealed with a bag made of a polymer sheet, wherein the moisture content of the dry pulp nonwoven fabric is 5% by weight or less and the package is packed with the polymer sheet bag. Has been proposed. In this patent publication, such a moisture content control is applied to the dry pulp nonwoven fabric so as not to cause a substantial odor problem.

[0005]

Patent No. 2845126
In the technique of No. 5, the odor buildup is prevented by controlling the water content to a predetermined value or less in a closed structure formed of a bag-shaped polymer sheet. However, even in the case of a hermetic structure, in the case of a polymer sheet, since there is some air permeability, it is not possible to strictly maintain moisture management for a long period of time, so it may not be possible to suppress the generation of odor at the time of opening. .

In the present invention, the moisture content of the nonwoven fabric sheet is left as it is, that is, even if there is no way to control the water content, the polymer sheet does not take a closed structure but simply a polymer sheet. The present inventors have paid attention to the fact that even if there is an odor, the odor does not occur, and practically no practical problem is caused in the odor by forming a completely open structure at both ends merely covered in a cylindrical shape.

[0007]

According to the first aspect of the present invention, there is provided a package in which a plurality of nonwoven fabric rolls are wrapped with a polymer sheet, and the plurality of nonwoven fabric rolls have side surfaces closely contacted with each other. The nonwoven fabric roll is surrounded by a polymer sheet heat-welded at both ends in the longitudinal direction so as to form a cylindrical shape, and at least a part of each of both end faces is surrounded by being completely open to the outside air. A non-woven roll package is provided.

[0010] The function and effect of the first aspect of the invention will be described. A plurality of nonwoven fabric rolls are arranged side by side so that the side surfaces thereof are in close contact with each other. Because it is completely open to the outside air, there is no obstruction to the flow of air between the inside and the outside of the package (a straight air flow is always obtained). There is no odor. That is, even if the moisture content in the nonwoven fabric is large and there is an odor, since it is always escaped to the outside by the completely open structure, there is no problem of unpleasant odor when breaking the package and taking out the nonwoven fabric roll,
There is an effect that enables comfortable use. In addition, since a plurality of nonwoven fabric rolls closely contacted at the sides are wound by a cylindrical polymer sheet, mutual slippage of the nonwoven fabric rolls in the packaging state does not actually occur, and a firm packaging state is ensured. The packing state is not destroyed during handling such as transferring goods. In other words, since the nonwoven fabric sheet is bulky, the contact area between the nonwoven fabric rolls becomes large just by pressing the rolls lightly on the sides, and in this state, even if the package is lightly packaged with a polymer film, the mutual tight contact between the nonwoven fabric rolls is achieved. State can be maintained. In addition, the polymer sheet may not be formed in a bag shape, but may simply be formed in a tubular shape around the outer periphery of the nonwoven fabric roll (the width required to cover the entire end surface of the nonwoven fabric roll is not necessary). This has the effect of reducing the consumption of paper and reducing packaging costs.

According to the second aspect of the present invention, the first aspect is provided.
In the invention described in the above, both end portions of the cylindrical polymer sheet are bent radially inward along both end surfaces of the nonwoven fabric roll, and the bent portion is thermally welded to the opposite surface of the polymer sheet. The present invention provides a nonwoven fabric roll package characterized by the following.

The operation and effect of the second aspect of the present invention will be described. In the cylindrical polymer sheet, the portions of the polymer sheet protruding from both sides of the nonwoven fabric roll are folded and thermally welded to each other to completely open. There is an effect that a stronger packaged state can be obtained without losing any merit of preventing odor buildup due to the structure.

According to the invention described in claim 3, according to claim 1 of the present invention,
Alternatively, in the invention described in 2, the nonwoven fabric roll package is provided, wherein the core tube of the nonwoven fabric roll has a porous structure.

According to the third aspect of the present invention, the porous structure of the core tube allows ventilation from the core tube side, so that the external opening structure is more thorough.

[0013]

1 to 4 show a series of procedures of a method for packing a dry pulp nonwoven fabric roll in this embodiment. In FIG. 1, reference numeral 10 denotes a dry pulp nonwoven fabric roll, which is obtained by winding a nonwoven fabric sheet from a raw material around a paper tube 12 as a core tube, and cutting the sheet at a predetermined width. The two nonwoven fabric rolls 10 are conveyed in the direction of arrow a by a conveyor (not shown) in a state in which the nonwoven fabric rolls are in side-to-side contact (side-by-side), and temporarily stopped at a position P1 shown in FIG.

A pair of nonwoven fabric rolls 10 closely contacted side by side are fed vertically upward from position P1 in the direction of arrow b by an air cylinder or the like (not shown). Since a polymer sheet 14 such as polyethylene (shown as a transparent film in the drawing) as a wrapping band is waiting to extend in the cross direction in the middle of the vertical conveyance path, a pair of side-by-side During the transfer of the nonwoven fabric roll 10 in the direction of arrow b, the nonwoven fabric roll 10 is engaged with the polymer sheet 14 and the polymer sheet 14
Is taken up by the nonwoven fabric roll 10 which moves upward, and when it reaches the stop position P2 just before the packaging guide assembly 16 having a U-shaped cross section with an open upper surface, both ends 14-1, 14 in the longitudinal direction of the polymer sheet 14 are reached. -2 hangs down to the state shown in FIG. As shown in the figure, the width of the polymer sheet 14 is slightly wider than the nonwoven fabric roll 10 and
The four ends 14-3 and 14-4 in the width direction slightly protrude from both ends of the nonwoven fabric roll 10.

A nonwoven fabric roll 10 made of a polymer sheet 14
In FIG. 2, which is the next stage of the packaging, the guide plate 18 and the push plate 20 are moved in the horizontal direction toward the packaging guide assembly 16 as shown by an arrow c. In the course of movement in the direction of arrow c, the guide plate 18 guides the front end 14-1 of the nonwoven fabric sheet 14 hanging down from the pair of nonwoven fabric rolls 10 so as to adhere to the peripheral surface of the nonwoven fabric roll 10. on the other hand,
The pushing plate 20 has an opening having a U-shaped cross section slightly wider than the width of the nonwoven fabric roll 10 between the two wing portions 20-1. The letter-shaped opening fits into the nonwoven fabric roll 10. Then, by further continuing the movement in the direction of the arrow c, the nonwoven fabric roll 10 is taken into the packaging guide assembly 16 together with the polymer sheet 14. At the time of this take-in, the front longitudinal end 14-2 of the polymer sheet 14 is guided by the horizontal support plate 22 so as to be attached to the lower surface of the nonwoven fabric roll 10. In addition, the width direction end 14-3 of the polymer sheet 14,
14-4 are both side portions forming a U-shaped cross section of the pushing plate 20
20-1 and first upright wings 16-1 on both sides of the guide assembly 16
Is folded inward by the radius.

FIG. 3 shows the next stage, in which the pair of nonwoven fabric rolls 10 has reached the position P2 and stopped by the movement of the interlocking plate 18 and the pushing plate 20 in the direction of arrow c. In the figure, reference numeral 14A denotes a joining line at the longitudinal ends 14-1 and 14-2 of the polymer sheet 14. Joining line 1
4A, the longitudinal ends 14-1, 14- of the polymer sheet 14 are shown.
2 has a somewhat overlapping arrangement, and this joining line 1
4A is a gap 24 between the guide plate 18 and the horizontal support plate 22.
It is located in. A heating plate (not shown) ascends the gap 24 and contacts the polymer sheet 14 such as a polyethylene film at the joining line 14A. As a result, the polymer sheet 14 is welded at its longitudinal ends 14-1 and 14-2. As a result, the polymer sheet 14 has a cylindrical shape. In this embodiment, the polymer sheet 14 is covered with the nonwoven fabric roll 10 in a free state and is simply welded in a cylindrical shape and is not tensioned. The nonwoven fabric rolls 10 packaged in close contact with each other without applying any tension to the cylindrical polymer sheet 14 in order to maintain a state in which the side surfaces are in close contact and the contact area is large due to the flexibility of the nonwoven fabric roll 10. And keep the cargo from collapsing.

FIG. 4 shows the next stage, in which the pressing plate 2
0 is further moved in the direction of arrow c, leaving the wing portion 20-1. In the course of this movement, the lower portion 14-4 'in the width direction of the cylindrical polymer sheet 14 becomes the first portion of the guide assembly 16 Upright wing 16-1
The second upright wing 16-2 passing through the slit 25 below the first upright wing 16-1 and following the first upright wing 16-1 radially upwards at the rear inclined front edge thereof at the lower side 14-4 '. The upper portion 14-4 "of the cylindrical polymer sheet 14 in the width direction is bent, passes above the guide first upright wing portion 16-1, and passes through the second upright wing portion 16-1.
The third upright wing portion 16-3 following -2 bends the upper portion 14-4 "radially downward at its forward inclined leading edge.
The position P3 shows a state in which the nonwoven fabric roll 10 that is in close contact with the pair of side surfaces coming out of the packaging guide assembly 16 is covered with the cylindrical polymer sheet 14. Then, the radially inward folded portions 14-4 'and 14-4 "at both ends in the width direction of the polymer sheet 14 are engaged with the heating plate 26 and are subjected to welding. That is, in FIG. Plates 26 are provided on both sides of the path of movement of the nonwoven fabric roll 10 and the folded portions 14-4 ', 14-4 "are opposed (the inner side by moving the heating plate 26 slightly towards the end face of the nonwoven fabric roll 10). 2) Packaging of the nonwoven fabric roll 10 by the polymer sheet 14 which is welded to the bent portion of the polymer sheet (the portion of the polymer sheet bent by the first upright guide 16-1 in FIG. 2) is completed.

FIG. 5 shows the completed package. The two nonwoven fabric rolls 10 are arranged side by side so that the side surfaces are in close contact with each other, and are surrounded by a polymer sheet 14 having both ends in the longitudinal direction formed into a tubular shape and heat-welded. Both ends of the polymer sheet 14 protruding from the end of the nonwoven fabric roll 10 are folded along the end face of the nonwoven fabric roll 10, and the folded portions 14-4 ′ and 14-4 ″ are in front of the paper tube 12. And both end surfaces 10 of the nonwoven fabric roll 10 are completely open to the outside, and the folded portions 14-4 ', 1
4-4 "is welded at a portion 28 slightly outside the paper tube 12 with respect to the opposite surface of the polymer sheet 14 to complete the package. In the packaging structure of the present invention, the polymer sheet 14 is cylindrical. The non-woven fabric roll 10 is open at both ends to the outside, so that a straight air flow to the outside is always obtained and the moisture content in the non-woven fabric is large, and even if odor is generated, the non-woven fabric roll 10 remains inside the package. Since there is no stagnation and the structure is always escaped to the outside due to the completely open structure at both ends, there is no problem of unpleasant odor at the time of breaking the package and taking out the nonwoven fabric roll, and there is an effect that comfortable use is possible.
Further, since the plurality of flexible nonwoven fabric sheets 10 are closely adhered to each other at the time of cylindrical packaging by the polymer sheet 14,
Even when little tension is applied to the polymer sheet 14 during the packaging operation, the two non-woven fabric sheet rolls 10 are kept in close contact with each other, so that the two non-woven fabric rolls 10 wrapped do not slip from each other effectively, and A proper packaging state can be ensured, and the packaging state is not lost during handling such as transfer of goods. Further, since the polymer sheet 14 is not cylindrical but a simple tubular shape, the width of the polymer sheet can be narrowed accordingly, so that consumption of the polymer sheet as a packaging material can be reduced, This has the effect of reducing packaging costs.

FIG. 6 shows another embodiment of a paper tube 12 as a core tube for winding a nonwoven fabric sheet.
Has a porous structure having a large number of holes 30, and since the nonwoven fabric roll is also ventilated from the paper tube 12, there is an effect that ventilation to the outside is more complete.

In the embodiment described above, the polymer sheet 1
The width of 4 is wider than the width of the nonwoven fabric roll 10, and the both side margins of the polymer sheet 14 protruding from the width of the nonwoven fabric 10 are folded inward and welded to complete the nonwoven fabric sheet roll package. However, the width of the polymer sheet 14 can be equal to or slightly smaller than the width of the nonwoven fabric roll 10, and this variation is also included in the scope of the present invention.

Further, the polymer sheet 14 packed in the nonwoven fabric roll 10 may be made to be in a tensed state by a method such as thermally shrinking the polymer sheet 14 so as to make the polymer sheet 14 more firmly packed. Included within the scope of the invention.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first stage of packaging of a nonwoven fabric roll with a polymer sheet.

FIG. 2 is a schematic perspective view showing a second stage of packaging of a nonwoven fabric roll with a polymer sheet.

FIG. 3 is a schematic perspective view showing a third stage of packaging of a nonwoven fabric roll with a polymer sheet.

FIG. 4 is a schematic perspective view showing a fourth stage of packaging of a nonwoven fabric roll with a polymer sheet.

FIG. 5 is a perspective view of a packaged product of a completed nonwoven fabric roll.

FIG. 6 is a perspective view of a paper tube of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Dry pulp nonwoven fabric roll 12 ... Paper tube 14 ... Polymer sheet 14-1, 14-2 ... Both ends of polymer sheet length direction 14-3, 14-4 ... Both ends of polymer sheet width direction 16 ... Packaging guide assembly 16-1 First upright wing 16-2 Second upright 16-3 Third upright 18 Guide plate 20 Push plate 20-1 Wing 22 Horizontal support plate 24 ... gap 26 ... heating plate 28 ... welded part

Claims (3)

[Claims] 1. A package formed by packaging a plurality of nonwoven fabric rolls with a polymer sheet, wherein the plurality of nonwoven fabric rolls are arranged in parallel so that their sides are in close contact with each other, and both ends in the longitudinal direction are formed in a cylindrical shape. A non-woven fabric roll package, wherein the non-woven fabric roll is surrounded by the heat-sealed polymer sheet with at least a part of each of both end surfaces thereof completely open to the outside air. 2. The polymer sheet according to claim 1, wherein both end portions of the cylindrical polymer sheet are bent radially inward along both end surfaces of the nonwoven fabric roll, and the bent portion is formed of the polymer sheet. A non-woven fabric roll package which is heat-welded to an opposing surface. 3. The non-woven fabric roll package according to claim 1, wherein the core tube of the non-woven fabric roll has a porous structure.