JPH06374Y2 - Drip absorbent sheet for fresh food packaging packs - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to fresh fish, frozen fish such as crab, shrimp, and fillet fish,
The present invention relates to a drip absorbent sheet which is suitable for use in packaging packs of fresh food such as meat, daily foods, and vegetables, and which gives a fresh fish feeling and a hygienic feeling. Note that the drip refers to the effluent or sap that leaks out from the fish body, meat, and the like.

[Prior Art] Styrofoam packaging for fresh food Packaging containers (tray)
When the product is put in a bag and packaged, the water contained in the food, the body fluid or the water drops of the washed food, or the seasoned juice or oil leaches out as a drip over time. In the case of low-temperature distribution, food in trays such as foamed styrene filled with ice shows a marked decrease in freshness due to dew and water drops. In addition, some cold-distributed foods lose their freshness due to frost and drip.

The microfilm of Japanese Utility Model Application No. 51-68959 (Japanese Utility Model Application No. 52-161120) is composed of a composite packaging material in which a water-absorbing substance is sandwiched between the outer and inner layers having waterproofness, and at least one of the bottom parts is used. In the section, a container having a water absorption passage having a depth penetrating the inner layer is described.

In addition, the microfilm of Japanese Utility Model Application No. 51-122458 (Japanese Utility Model Publication No. 53-40878) has a space between a waterproof thin layer having a large number of small holes dispersed therein and a waterproof thin layer having no small holes. In the above, the meat is formed by inserting an absorbent core paper layer that absorbs blood, oily mud, etc. leached from the meat and fresh fish through the small holes, and integrally joins the edges of these three layers at appropriate positions with a crimping portion. , Packs for fresh fish are listed. It is also described that the waterproof thin layer is semitransparent or opaque.

Further, Japanese Utility Model Publication No. 60-1109 describes a structure in which a water-absorbing mat made of corrugated cardboard for forming a fish box for mackerel and saury is provided with perforated holes in a streak pattern.

Further, in Japanese Examined Patent Publication No. 33-1293, a hygroscopic paper to be provided around the inner surface of a container capable of blocking the outside air such as a tin can, a strong hygroscopic substance such as calcium chloride is absorbed in a thick paper,
It describes a structure in which vinyl or the like is applied to the surface to form a film and a large number of vent holes are provided.

[Problems to be solved by the device]

Conventionally, as a measure against drip, non-woven fabric consisting of one layer was laid as a water absorbent paper on a tray and packed (packed), but the drip is colored due to blood and body fluid, and this drip spreads over the entire water absorbent paper and is unsightly. In the case of a large amount of drip, the water-absorbent paper cannot be completely absorbed and remains in the tray. In the case of low temperature distribution, there is currently no suitable water absorbing paper. For this reason, the time for rewinding the drip and the amount of materials used are increased, the opportunity loss in sales is high, and the loss for quality deterioration occurs, which is extremely uneconomical. Further, once the frozen product is thawed and then frozen again, the non-woven fabric and the food stick to each other, and when the food is taken out, the fibers of the non-woven fabric adhere to the food, which is extremely unsanitary. It should be noted that fish and shellfish, meat and the like generate a large amount of drip when thawing, so it is possible that the drip will not be able to absorb water completely with water-absorbent paper.Therefore, it is not necessary to waste time to remove the drip. Not efficient.

Since the microfilm container of Japanese Patent Application No. 51-68959 (Japanese Utility Model Publication No. 52-161120) forms the container by the sheet itself, the upper and lower (inside and outside) sheets must be waterproof. A total of three layers are required for the water-absorbing substance layer, and the water-absorbing channel has a slit shape with a fairly wide width. Also,
Since it is integrated with the water-absorbent substance, it takes time to process such as press molding and laminating, and the size, shape, water content and drip amount differ depending on the food, so the combination of container and water-absorbent substance changes depending on the food. Not economical because it is necessary. In addition, although this container has a water absorption passage, when a colored drip is absorbed, an unsightly colored drip can be seen from above the container through the water absorption passage, which is unsanitary and inconvenient in appearance. In addition, in order to completely absorb the drip, a water absorption channel wider than the product space is required, and therefore, the water absorption channel can be seen from above.

A microfilm pack of Japanese Utility Model Application No. 51-122458 (No. 53-40878) is bonded by thermocompressing the edges of the three layers of the upper and lower waterproof thin layers and the middle absorbent core paper layer. Therefore, in addition to requiring two layers above and below as a waterproof thin layer,
Since the thermocompression bonding portion must be provided on the edge of the predetermined shape in advance, it cannot be cut into an arbitrary shape for use. In addition, although many small holes are provided in the waterproof sheet, in the case of small holes (hereinafter, the small holes are circular for convenience), since the hole has a certain diameter, unsightly colored drip can be seen from above through the small holes. Become. However, if the hole diameter is reduced in an attempt to correct this, even if the number of holes is increased, the frictional resistance when the liquid passes through the waterproof sheet increases, so that the water absorption capacity decreases, which is inconvenient. That is, even if an infinite number of fine holes such as dots are provided, the frictional resistance increases and is difficult to be absorbed, but water can be easily absorbed by making a linear cut that is considered to be an infinite number of dots. Also, in this pack, both the front and back sides of the water absorbent sheet are sandwiched by waterproof sheets, but if the drip seeps out of the sheet for some reason, water cannot be absorbed from the back side, so the drip may collect at the bottom of the container. It's a problem.

Further, the water absorption mat in the cardboard case described in Japanese Utility Model Publication No. 60-1109 is used for a shipping box for fresh fish, and drip from mackerel, saury etc. is absorbed, but the color of the absorbed drip can be seen, It cannot give a fresh fish feeling and a hygienic feeling, and is not suitable as a food packaging pack for displaying products.

Further, the hygroscopic paper described in Japanese Patent Publication No. 33-1293 is intended only for the purpose of drying the inside of a container such as a tin can. Therefore, when this hygroscopic paper is used for a food packaging pack, the drip is absorbed as described above. However, the color of the absorbed drip can be seen, and it is not possible to give a freshness and hygienic feeling,
Not suitable as a food packaging pack for product display.

The present invention has been made in view of the above points, and has a simple two-layer structure so that even if the drip seeps out of the seat, it can be absorbed from the back side, and even if it absorbs a colored drip, it exhibits a color. It is an object of the present invention to provide a drip absorbing sheet that can be used without being cut and optionally cut according to the shape of a pack (container).

[Means and Actions for Solving the Problems]

In order to achieve the above object, a drip absorbing sheet for a fresh food packaging pack according to the present invention is described below with reference to the drawings. The sheet 2 is joined to form a two-layer structure, and a large number of linear cuts 3 are provided on the opaque sheet 2 having no water absorption property.

Nonwoven fabrics such as pulp and rayon, sponge, cotton, cloth, and paper are used as water-absorbent sheets, and opaque sheets that do not have water-absorbency are opaque by coating thin paper with a synthetic resin such as polyethylene. Used are those that have been made into paper, those that have been glassine-processed, oil-resistant paper, sulfuric acid paper, synthetic paper, etc., and those that are laminated.

The drip leaching from the food is absorbed from the notch of the opaque sheet having no water absorption or the side surface of the sheet having water absorption. Since the drip is usually colored, the sheet that does not absorb water is made opaque, and the openings are made into linear cuts so that the color of the drip cannot be seen.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1 and FIG. 2, the drip absorbing sheet of the present invention has an opaque sheet 2 (hereinafter, opaque sheet) having no water absorbing property on one side of a water absorbing sheet 1 (hereinafter referred to as water absorbing sheet 1). Sheet 2) is joined to form an opaque sheet 2
In addition, a large number of linear cuts 3 are provided. In this case, the opaque sheet 2 in which a large number of cuts 3 are previously formed is joined to one surface of the water absorbent sheet 1. As shown in FIG. 3, the water-absorbent sheet 1 may be provided with cuts 4 as well. in this case,
After joining the water absorbing sheet 1 and the opaque sheet 2, the cut lines 3 and 4 are formed at the same time. The water-absorbent sheet for foods shown in FIGS. 1 to 3 is suitable for packaging raw foods and frozen foods for low-temperature distribution. The arrangement of the cuts shown in FIG. 1 is shown as an example, and any arrangement may be used as long as it has a large number of cuts.

Next, an example of use of the drip absorbing sheet configured as described above will be described. As shown in FIG. 4, lay the water absorbent sheet for food of the present invention in the packaging container 5 (tray 5),
The food 6 is placed on this, covered with the transparent film 7 and packaged. The drip leaching from the food 6 is absorbed by the water absorbent sheet 1 through the cut 3, the color of the drip itself and the drip are not visible from the outside, and the fibers of the water absorbent sheet 1 do not adhere to the food 6. In this case, the water absorbing sheet 1 and the tray 5
Sometimes glued with.

Further, as shown in FIG. 5, the water absorbing sheet 1 is placed in the tray 5.
In some cases, the water absorbent sheet for food of the present invention having a wider opaque sheet 2 is laid and the opaque sheet 2 is bonded to the tray 5.

Next, spread the drip absorbing sheet of the present invention in the three trays by laying it as shown in Fig. 4, and put the mackerel fillets A, B and C in each tray and store at 5 ℃. did. After four days, the number of mackerel fillets A, B and C and the number of drip bacteria were measured. Result is No. 6
It was as shown in the figure. As shown in Fig. 6, the number of mackerel fillets was on the order of 10 ⁷ per gram, while the drip was on the order of 10 ⁸ to 10 ⁹ per gram. From this, it is understood that the number of bacteria in the food is reduced by absorbing the drip. That is, it is understood that the drip absorbing sheet of the present invention suppresses the increase of bacteria and plays a role of maintaining freshness.

Since the drip absorbing sheet of the present invention is constructed as described above, the drip leached from the food is absorbed by the water absorbing sheet through the linear cut of the opaque sheet, and the color of the drip absorbed by the opaque sheet cannot be seen. , In appearance,
Since the opaque sheet which is not unsightly and does not have water absorbency is provided, the fibers of the water absorbent paper do not adhere to foods and are extremely hygienic. When a large amount of drip is leached out, it can be solved by thickening the water absorbing layer in advance. Also, using an opaque sheet, and with the passage hole of the drip as a cut, the aperture width is made smaller than in the case of a round hole, so the absorbed drip cannot be seen from the outside.
Packaging with a good appearance and freshness can be performed.

Also, by sprinkling water on the water-absorbent sheet to retain water, it is possible to exert the effect as a freshness-preserving material for preventing drying of packaged products (particularly vegetable leaves) and as a buffer and freshness-retaining material for easily scratched products. it can.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

(1) Since a sheet having water absorption on the lower surface and a thin opaque sheet having no water absorption on the upper surface are joined together to form a two-layer structure, and the opaque sheet is provided with a large number of linear cuts, it is absorbed. The drip itself and the color of the drip are not visible from the outside,
It is possible to perform food packaging with a good appearance and a fresh and hygienic feeling.

(2) Since the lower layer is a sheet having a two-layer structure and water absorption,
The drip accumulated at the bottom of the food pack (container) can be absorbed from the back side of the sheet.

(3) Since the entire surface of the water-absorbent sheet and the non-water-absorbent thin opaque sheet are joined together, they can be cut to any size according to the shape of the food pack (container) and used. .

(4) Since the structure is simple with a two-layer structure, cost reduction can be achieved.

(5) Since the passage hole of the drip is a linear cut, if the opening area is the same as that of the round hole, the opening width will be smaller than that of the round hole, and the absorbed drip Colors are more difficult to see from the outside.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a drip absorbent sheet for a fresh food packaging pack of the present invention, FIG. 2 is a sectional view taken along the line AA of the same, and FIG. 3 is another embodiment of the drip absorbent sheet of the present invention. Fig. 4 and Fig. 5 are sectional explanatory views showing examples of use of the drip absorbing sheet of the present invention, and Fig. 6 is a graph showing the results of the test using the drip absorbing sheet of the present invention. is there. DESCRIPTION OF SYMBOLS 1 ... Water-absorbent sheet, 2 ... Non-water-absorbent opaque sheet, 3, 4 ... Notches, 5 ... Packaging container (tray), 6
… Food, 7… Transparent film

Claims (1)

[Scope of utility model registration request] 1. An opaque sheet (2) having at least no water absorption, wherein a thin opaque sheet (2) having no water absorption is bonded to the upper surface of the sheet (1) having water absorption to form a two-layer structure. A drip absorbing sheet for a fresh food packaging pack, characterized in that a large number of linear cuts (3) are provided in the sheet.