JPH0635187U - Cardboard vegetable case - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a vegetable case that can maintain the freshness of vegetables stored in a cardboard case such as a cardboard case for a longer period of time. [Structure] A cardboard vegetable case in which cellophane is laminated inside a cardboard case and laminated with a polyolefin resin.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cardboard case used for storing and transporting vegetables such as leaf vegetables, root vegetables and fruit vegetables.

[0002]

[Prior art]

 In the distribution of vegetables, it is common for vegetables to be placed in a cardboard case, for example, a cardboard case, and shipped from the producer, which then goes through the market and is sent to retailers. Most of the corrugated cardboard cases made of normal corrugated cardboard and most of the other cardboards made of normal cardboard have a polyvinyl alcohol resin film. As shown in Japanese Patent Publication No. 60-39027 and Japanese Patent Laid-Open No. 60-39027, a case (hereinafter referred to as EVA) which is laminated inside is used as a packaging material (hereinafter, this is EVA). Laminated packaging material) can be seen.

[0003]

[Problems to be solved by the device]

 In the case of the PVA film-attached case described above, the PVA film is laminated on the corrugated board using a polyolefin resin as a binder, but after this lamination process, aging time of several tens of hours is required, so work efficiency is improved. In addition, the adhesiveness of the binder is not good, and the price of PVA film cannot be said to be low. Since these things are the same in the case of EVA laminated packaging material, this device is easy to process, the aging time after processing is short, the work efficiency is not hindered, and the adhesiveness of the binder is not impaired. It is an object of the present invention to provide a vegetable case which has a good suitability and a low film price, but has the same freshness-keeping effect as PVA film or EVA film.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a case for vegetable made of cardboard, which is made by laminating cellophane 2 inside case 4 with polyolefin resin 3.

The cellophane used in this invention is a normal cellophane, but when using a moisture-proof cellophane, use a cellophane that has been moisture-proofed on only one side, and then contact the case with the moisture-proofed surface in contact with the case. Anything can be used as long as it is laminated and compounded inside.

The polyolefin resin used in the present invention may be of any type, but polyethylene resin is preferably used from various points, and the cardboard as a case is simply cardboard or corrugated board. Of these, corrugated balls are often used.

The case according to the present invention is a material obtained by laminating cellophane on a cardboard with a polyolefin resin, and the cellophane may be assembled so that the cellophane is inside the case. You can stack with.

In this invention, any means can be used for laminating cellophane with a polyolefin resin on a cardboard, for example, cellophane may be laminated by thermal extrusion of a polyolefin resin, or Cellophane may be adhered and laminated using a polyolefin resin as an adhesive, or a polyolefin film and cellophane may be laminated and laminated on a cardboard by heat fusion, or cellophane and a polyolefin resin may be used as an appropriate means. Alternatively, the laminate may be laminated on the cardboard by an appropriate method, such as adhesive bonding or fusion bonding.

In this invention, the thickness of cellophane used is arbitrary, but it is preferably about 20 μ to 50 μ depending on the type of vegetable, and the thickness of the polyolefin resin is also 20 μ to 60 μ depending on the type of vegetable. A degree is preferable.

[0010]

[Action]

 It is considered effective to maintain the freshness of vegetables by preventing transpiration, maintaining the storage atmosphere at high humidity, and preventing water from getting wet. The moisture permeability of the polyolefin resin is effective for preventing the above, and the moisture permeability of the polyolefin resin and the moisture retention property of cellophane are effective for maintaining the storage atmosphere at high humidity, which prevents water wetting. Regarding prevention, it is considered that hygroscopicity is effective for cellophane, and regarding workability, cellophane is inexpensive and easy to handle, and polyolefin resin has short aging time after lamination and good work efficiency. Adhesive suitability is also good.

[0011]

【Example】

 FIG. 1 is a cross-sectional plan view of a case according to an embodiment of the present invention, FIG. 2 is a vertical sectional side view of a laminated corrugated cardboard, and FIG. 3 is a vertical sectional side view of a laminate of cellophane and a polyolefin resin. In the figure, 1 is a cardboard, 2 is a cellophane, and this cellophane 2 is laminated and compounded inside a case 4 with a polyolefin resin 3 such as a polyethylene resin. The cardboard 5 is usually used as the cardboard 1 which is the material of the case 4, but the cardboard 5 is not limited to this and may be so-called hard cardboard. In order to obtain the case according to the present invention, the case 4 is assembled with cardboard 5, for example, cardboard 5, and then the cellophane 2 and the polyolefin resin 3 shown in FIG. 3 are laminated and integrated inside the case 4. The laminate 7 may be heat-sealed by using the polyolefin resin 3, or may be adhered or adhered by using an appropriate pressure-sensitive adhesive or adhesive. As shown in FIG. 2, cellophane 2 and polyolefin synthetic resin 3 may be laminated on the corrugated ball 5 by thermal extrusion to obtain a laminated corrugated board 6, and the case 4 may be prepared using this. The means is arbitrary. Although the thicknesses of the cellophane 2 and the polyolefin resin 3 in the case 4 differ depending on the type of vegetables contained in the case 4. In general, about 20 μ to 50 μ is preferable for cellophane 2, and about 20 to 60 μ is preferable for polyolefin resin 3.

[0012] Three cases of a corrugated bowl case A formed by laminating and combining cellophane 20μ and polyethylene resin 20μ inside, and three cases of a corrugated cardboard case B formed by laminating and combining PVA film 18μ and polyethylene resin 20μ inside. We prepared 3 cases of corrugated cardboard case C consisting of 12μ of EVA film and 20μ of polyethylene resin laminated inside, and in each case, Komatsu as an example of leaf vegetables, radish as an example of root vegetables, and eggplant as an example of fruit vegetables. Each of them was housed and placed in a room with an average temperature of 20 ° C and a humidity of about 70%, and the contents of the contents were examined every 24 hours for 6 days. There was almost no significant difference between C and C cases.

[0013]

[Effect of device]

 Since the case for vegetables according to the present invention is configured as described above in detail, the freshness-preserving effect on vegetables is the same as that of the conventional PVA film or EVA film laminated composite case, and a good result is obtained. However, the material film is cheaper and easier to process than the conventional one, and the aging time after processing is extremely short, and the adhesiveness and adhesion are also good. It is remarkable that the case is easy to manufacture and the work efficiency is good.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view of a case according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of laminated cardboard.

FIG. 3 is a vertical sectional side view of a laminate of cellophane and a polyolefin resin.

[Explanation of symbols]

 1 Cardboard 2 Cellophane 3 Polyolefin resin 4 Case 5 Corrugated board 6 Laminated corrugated board 7 Laminate

Claims (5)

[Scope of utility model registration request] 1. A case for vegetables made of cardboard, comprising a cellophane (2) laminated inside a case (4) with a polyolefin resin (3). 2. The cardboard vegetable case according to claim 1, wherein the polyolefin resin (3) is a polyethylene resin and the cardboard (1) is a corrugated cardboard (5). 3. The cellophane (2) according to claim 1, wherein the cellophane (2) is assembled on the inside by using a laminated corrugated cardboard (6) laminated with a polyolefin resin (3) on one surface. Cardboard vegetable case. 4. The cardboard vegetable case according to claim 1, wherein a laminate (7) of cellophane (2) and polyolefin resin (3) is provided inside the case. 5. The cardboard according to claim 1, wherein the cellophane (2) is a cellophane (2) moisture-proofed on only one surface, and the moisture-proof surface is in contact with the case (4) to form a laminated composite. Case for vegetables.