JP2600391Y2 - Wrapping sheet - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a moisture-absorbing and water-absorbing packaging sheet.

[0002]

2. Description of the Related Art Conventionally, such a sheet for packaging is typified by corrugated cardboard in the case of absorbing moisture and water. Corrugated paper is used as a partition for fruits and vegetables packed in boxes. Although it is highly evaluated for its unique moisture absorption, water absorption and cushioning properties, there is some shortage of moisture absorption and water absorption. However, because of its rigidity, there is a problem that, for example, it is not possible to wrap a fruit or the like.

As a conventional packaging means for individually wrapping fruits, as shown in FIG. 6, means for folding a cylindrical synthetic resin net and wrapping it in a double-packed net packaging body is generally used. . Such a packing means provides a certain cushioning property and air permeability, and has a particular effect as a means of packing high-quality fruits. However, the net itself lacks moisture absorption and water absorption effects, and the net packaging body is made of synthetic resin. Since it is composed of materials, there is still a solution to the problem of pollution caused by disposal, and it is a reality that these solutions are desired.

An object of the present invention is to provide a packaging sheet material which is excellent in function as a package, has high adaptability for disposal, incineration and regeneration, and has no pollution problem.

[0005]

Means for Solving the Problems The structure of the present invention which solves the problems of the prior art is that a porous structure is provided between two sheets of paper made of dry pulp material on the surface of a corrugated sheet forming a single-sided corrugated cardboard. A flexible pulp paper board with a pulp layer interposed was attached to form a flexible corrugated cardboard structure, and two sheets of pulp raw material were dry-finished on the surface of a corrugated sheet forming single-sided corrugated cardboard A flexible pulp paper board having a pulp layer of a porous structure interposed between the papermaking paper boards to form a flexible rectangular corrugated cardboard structure, and the lower side of the long side of the corrugated cardboard structure Provided with a bottom forming plate portion having a number of cuts intersecting with the longitudinal axis direction of the corrugated cardboard structure, and at both ends of the packaging plate portion excluding the bottom forming plate portion of the rectangular corrugated cardboard structure. , Engaging means.

[0006]

The packaging sheet of the present invention has no rigidity compared to conventional corrugated cardboard and has a flat attitude, as well as can be wrapped according to the form of the packaged object, and has a moisture absorbing and water absorbing effect. This is extremely effective for packaging of items to be packed. Further, since everything is made of paper, that is, pulp raw material, disposal, incineration and regeneration are optional.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of the packaging sheet of the present invention, FIG. 2 is a developed front view of the fruit packaging sheet, FIG. 3 is a developed front view showing another embodiment of the fruit packaging sheet, and FIG. FIG. 5 is a perspective view of a fruit packaged state.

Referring to FIG. 1, the basic structure of the packaging sheet will be described. Reference numeral 1 denotes a single-sided cardboard, which is composed of a flat plate 1a and a corrugated plate 1b adhered thereto. 2 is a flexible pulp paper board,
In this pulp paper board 2, a porous pulp layer 2b in which an adhesive is mixed with pure 100% pulp is sandwiched between two thin papermaking paper boards 2a in which pulp raw materials are dry-finished. The pulp layer 2b is formed by wrapping the pulp layer 2b on the paperboard 2a and bonding it. And
One of the papermaking paperboards 2a constituting the pulp paperboard 2 is bonded to the corrugated board 1b to form a flexible corrugated cardboard structure A. Further, one of the papermaking paperboards 2a bonded to the corrugated board 1b is subjected to a water-repellent treatment so that the corrugated cardboard structure A
This prevents the effects of moisture absorption and water absorption on the corrugated sheet 1b from losing the adhesive effect between them. The packaging sheet thus obtained is used as a flat partition for packaging of fruits and the like, and absorbs and supplies dew condensation and the like generated on the surface of the fruits due to a change in the outside air temperature, thereby providing freshness and taste of the fruits. In addition, the cushion effect effectively prevents damage to the fruit.

Next, the embodiment shown in FIG. 2 will be described. A bottom forming plate portion a is provided below the long side of the corrugated cardboard structure A cut into a horizontally long rectangle, and the bottom forming plate portion a has a large number of cuts 3 oblique to the longitudinal axis of the corrugated cardboard structure A. The notch 4 is formed. On the other hand, an engaging piece 5 having a protruding structure is provided at one end of the corrugated cardboard structure A, and an engaging cut 6 into which the engaging piece 5 is inserted is provided at the other side. Also, the engagement cuts 6 are arranged in a plurality of stages so as to be adaptable to the size of the fruit to be packed. That is, as shown in FIGS. 4 and 5, the corrugated cardboard structure A is wrapped around the fruit, the engaging piece 5 is inserted into the engaging notch 6 and held, and the bottom forming plate portion a is bent inward. It forms the bottom and stably packs fruits.

In the embodiment shown in FIG. 3, the bottom forming plate portion a is formed as shown in FIG.
Instead of forming the notch portion 4 as shown in FIG. 5, a large number of linear cuts 7 are formed, and the means for wrapping and packaging fruits is the same as that of the embodiment of FIG.

Although not specifically shown, there is an embodiment shown in FIGS. 2 and 3 in which the engagement piece 5 and the engagement notch 6 are not provided. According to this embodiment, the fruit is wrapped in the corrugated cardboard structure A, the overlapped end of the corrugated cardboard structure A is adhesively bonded with cellophane tape, and then the bottom forming plate portion a is bent inward to form the bottom. In addition, the fruit can be stably packaged, and the time and effort for inserting and locking the engagement piece 5 with the engagement cut 6 can be eliminated. This configuration corresponds to claim 2.

[0012]

According to the configuration of the present invention as described above, the following effects can be obtained. (A) A pulp paper board having a sandwich structure mainly composed of pulp raw material is attached to the corrugated board surface of a single-sided corrugated cardboard to form a flexible corrugated cardboard structure. In addition to the water absorbing effect, the flexibility allows the material to conform to the shape of the article to be packaged and improve the packaging effect, and is particularly suitable for use in packaging fruits and the like. (B) The packaging of fruits is free due to the flexibility of the corrugated cardboard structure, the flexibility of the pulp paper board and the excellent moisture and water absorption effects, as well as moderate moisture and water absorption effects. Thereby, the freshness and taste of the fruit can be maintained for a long time.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of the packaging sheet of the present invention.

FIG. 2 is an exploded front view of a fruit packaging sheet.

FIG. 3 is a developed front view showing another example of a fruit packaging sheet.

FIG. 4 is a vertical cross-sectional front view showing a packed state of fruits.

FIG. 5 is a perspective view of a fruit packaged state.

FIG. 6 is a perspective view of a conventional fruit packing means.

[Explanation of symbols]

 A Corrugated cardboard structure 1 Single-sided corrugated cardboard 1a Flat board 1b Corrugated board 2 Pulp paper board 2a Papermaking board 2b Pulp layer 3 Cut 4 Notch 5 Engagement piece 6 Engage cut 7 Straight cut a Bottom forming plate

Claims (3)

(57) [Scope of request for utility model registration] 1. A surface of a corrugated sheet forming a single-sided cardboard,
A flexible corrugated cardboard structure is provided by attaching a flexible pulp paper board having a porous pulp layer interposed between two papermaking paper boards obtained by dry-finishing pulp raw materials. Packaging sheet. 2. The surface of a corrugated sheet forming a single-sided cardboard,
A flexible rectangular pulp paper board having a porous pulp layer interposed between two papermaking paper boards obtained by dry-finishing pulp raw material to form a flexible rectangular corrugated cardboard structure, A packaging sheet, comprising: a bottom forming plate portion having a number of cuts intersecting with the longitudinal axis direction of a corrugated cardboard structure provided below a long side of the corrugated cardboard structure. 3. The packaging sheet according to claim 2 , wherein engaging means are provided at both ends of the packaging plate portion of the rectangular cardboard structure excluding the bottom forming plate portion.