JPH10166485A - Water-absorbing mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-absorbing mat capable of absorbing blood bled from raw fish or meat to prevent the leakage thereof to the bottom surface of a tray and capable of absorbing waterdrops bonded to the bottom surface of the tray to prevent the damage of a commodity or the leak of waterdrops to the outside and incapable of directly viewing or seeing through an absorbed state from the outside. SOLUTION: A Japanese paper 30 is stuck to the rear surface of an opaque surface film 10 composed of a thermoplastic resin by using a resinous adhesive 20 and, by emboss processing, a large number of small recessed parts 11 are formed to the surface film 10 and slits 14 are generated in the boundaries of a part of side walls 12 and bottom surfaces 13 and a nonwoven fabric 40 is stuck to the rear surface of the Japanese paper by using a resinous adhesive 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-absorbent mat used as a rug when a cut of meat or fish is placed in a resin dish and packaged with a polymer film or the like.

[0002]

2. Description of the Related Art Conventionally, at mass retailers such as department stores and supermarkets, blocks of raw meat or cuts of raw fish are put in a foamed synthetic resin dish, wrapped and sold. Not only does blood and gravy accumulate on the bottom of the dish, causing customers to feel dirty or uncomfortable, or the wrap may be broken while carrying it, soiling clothes, or sticking to other products in the mixed bag. May occur.

[0003] Therefore, recently, a water-absorbing mat has been laid on the bottom of the plate to adsorb blood and the like, and efforts have been made to solve the above-mentioned problems. This water-absorbing mat 50 is shown in FIGS.
As shown in (C), a translucent synthetic resin film 51 is formed.
A large number of small holes 54 are formed in a sheet to which a water absorbing sheet 53 is adhered using an adhesive 52.

[0004]

By the way, the conventional water-absorbing mat 51 has a structure in which the water-absorbing sheet 53
Since the small hole 54 penetrating through the back surface of the plate is formed, the state in which the raw meat and blood of the raw fish pass through the small hole 54 and accumulate on the bottom of the dish or remain in the small hole 54 directly. I can see it. Moreover, since the film 51 is translucent, the state in which blood or the like is absorbed and diffused in the water absorbing sheet 53 around the small holes 54 can be seen through from the outside, giving a consumer discomfort. There is a point.

[0005] Further, since the small holes 54 penetrate to the back surface of the water absorbing sheet 53, there is an inconvenience that blood or the like flowing into the bottom of the dish leaks out from the edge of the water absorbing mat 53. In addition, raw meat and raw fish that have been placed in such a dish are generally displayed and sold in a cool case set at a low temperature.However, since the inside of the case is kept at a low temperature, dew condensation occurs on the bottom of the dish. When carrying in a carrying bag or the like, water drops on the bottom of the plate touch the raw meat etc. on the water absorption mat 51 and cause quality deterioration. Has the drawback of leaking and soiling the carrying bag.

In order to solve such a drawback, a pulp-based water-absorbing sheet is integrally adhered to the back of an opaque surface film, and embossing is performed on the water-absorbing sheet to provide a large number of small recesses in the surface film. Accordingly, a two-layer water-absorbing mat has been proposed in which a cut is formed at a boundary between a part of the side wall and the bottom surface. However, although the point that the absorbed state cannot be seen directly or seen through from the outside is improved, there is still room for improvement in terms of water absorption and water retention.

[0007]

DISCLOSURE OF THE INVENTION The present invention solves such a problem, and is far superior in water absorption, water retention and handling properties as compared with conventional products, and blood leached from raw fish or raw meat. Absorbs into the water absorbing sheet and does not leak to the bottom of the dish, and also absorbs water droplets attached to the bottom of the dish,
An object of the present invention is to provide a water-absorbing mat that can prevent damage to products and leakage of water drops to the outside.

[0008]

The present invention relates to a water-absorbent mat having a surface coated with an opaque film of a thermoplastic resin, wherein Japanese paper is adhered to the back surface of the surface film, and the surface film is embossed. The present invention provides a water-absorbent mat, wherein a large number of small concave portions are formed by generating cuts at boundaries between some side walls and a bottom surface, and a nonwoven fabric is stuck to the back surface of embossed Japanese paper. .

In the water-absorbent mat of the present invention, the Japanese paper is wet-creped and the non-woven fabric is a spunlace non-woven fabric subjected to a water jet treatment.
Especially rayon and polyethylene terephthalate fiber (PE
Preferably, the mixture is a mixture of T) or a pulp nonwoven fabric, and the thermoplastic resin is polypropylene, and the bonding is preferably performed with a hot melt adhesive.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The water-absorbent mat of the present invention forms a large number of small recesses in the surface film by embossing a material obtained by attaching Japanese paper to the back of an opaque surface film of a thermoplastic resin. In addition, during the press molding using the embossing roll, the expansion of the surface film cannot follow, and a cut is formed at the boundary between the side wall and the bottom surface of a part of the concave portion. In this case, the use of Japanese paper is advantageous in that the cost is low, the water absorption, diffusion and water retention are good, the product becomes firm and easy to handle, and the workability of the nonwoven fabric bonding in the subsequent process is improved. As the Japanese paper to be used, it is preferable to use Japanese paper made of almost 100% pulp coated with wet crepe, and since such Japanese paper has relatively large bulkiness and elasticity, each of the small recesses is hardly formed with a cut. Following the deformation while maintaining the adhesive state on the inner surface of the side wall and the inner surface of the bottom, respectively.

Further, in the present invention, a nonwoven fabric is further adhered to the embossed one that is obtained by adhering Japanese paper to the back of the surface film as described above to improve water absorption and water retention. As this non-woven fabric, it is more preferable to use a water jet (spun lace) non-woven fabric made of a mixture of rayon and PET. Further, by combining the characteristics of hydrophilic rayon and bulky PET, these mixed products can be combined with water. Spunlace nonwoven fabric entangled with a jet is preferable because it has both high bulkiness (water retention) and hydrophilicity. In addition, as the nonwoven fabric,
Pulp nonwoven fabrics are also suitable. The pulp nonwoven fabric is particularly excellent in water retention.

Therefore, for example, when a raw fish or the like is placed on a water-absorbing mat on a plate, the blood or the like is absorbed by the Japanese paper through the cuts in the surface film. In this case, the Japanese paper rapidly absorbs water by a capillary phenomenon. It diffuses and promotes the transfer to the non-woven fabric on the bottom, and not only absorbs water very efficiently, but also the moisture attached to the dish surface is directly absorbed by the non-woven fabric,
Blood and the like do not leak outside the edge of the film or onto the bottom of the dish, and the condensation formed on the surface of the dish can be eliminated. Also,
Since the cuts in the surface film are formed on the inner surface of the small recess, they cannot be seen directly from above the film, and since the film is opaque, the state in which it is absorbed and diffused by the water-absorbing sheet is also seen from the outside. Will not be
When displayed at the store, do not give customers any filth.

Thus, the present invention provides an opaque film,
It is composed of a three-layer structure made of Japanese paper and non-woven fabric, which prevents see-through from the outside, and the liquid material such as blood absorbs and diffuses rapidly due to the capillary action of the Japanese paper, and the liquid material that has absorbed water is bulky. , A larger amount of liquid is retained than before.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1A, the water-absorbent mat 01 of this example had an opaque film 10 of a thermoplastic resin as a surface, and wet crepe was applied on the back thereof with a resin-based adhesive 20 at almost 100% pulp. The bulky Japanese paper 30 is pasted and embossed to form a large number of small recesses 11 on the surface film 10.
A non-woven fabric 40 is adhered to the back surface of the base material 0 via a resin adhesive 21. In this case, when the embossed hole is opened after laminating, the nonwoven fabric may be crushed to a considerable extent and the bulkiness may be impaired to reduce the water retention. However, as in the present invention, the bulky Japanese paper 30 is stuck to the surface film 10, Adhering the nonwoven fabric 40 after embossing is preferable because the bulk of the nonwoven fabric 40 can be secured. During this embossing, a cut 14 is formed at the boundary between a part of the side wall 12 and the bottom surface 13 of the concave portion 11 because the surface film 10 cannot follow the expansion at the time of molding. However, since the bulky Japanese paper 30 is more flexible, it can follow the embossing forming, and has a longitudinal cross-sectional waveform along the forming of the surface film 10 without any break.

The recesses 11 each have a flat oval shape and are arranged in a zigzag pattern, as shown in FIG. The portion 31 is formed in a staggered pattern, and the nonwoven fabric 40 is adhered to the convex portion 31. Note that the water-absorbing mat 0
In each of the materials 1, the surface film 10 is made of polypropylene (thickness 35 μm), and the Japanese paper 30 is made of 100% pulp and wet creped and has a basis weight of 25 g / m ^{2 and} a bulkiness of 25 g / m ² . As the non-woven fabric, a water jet (spun lace) non-woven fabric (having a basis weight of 60 g / m ² ) in which rayon / PET is mixed is used. The resin adhesives 20 and 21 are hot-melt bonded using an olefin hot-melt adhesive. In addition,
In order to improve the water-absorbing performance of the water-absorbing mat 01, a water-absorbing polymer may be used in the nonwoven fabric or Japanese paper as necessary, and the amount of the water-absorbing polymer is preferably 5 g / m ² or less.

Next, the production of the water-absorbing mat 01 of this embodiment by embossing will be described with reference to FIG.
The polypropylene film 10 pulled out from the film roll body 15 is coated on a conveyor 02 with a molten olefin-based adhesive blown from a hot melt coating machine 22 disposed thereabove, and a pair of polymerization rollers 0
After being superimposed and closely attached to the washi paper 30 from the washi roll body 32 by means of a press 3, a press pressure is applied between the embossing roller 04 and the elastic roller 06, which have a large number of oval-shaped projections 05 projecting in a staggered pattern on the entire peripheral surface. 2.5-6.0 kg / cm ²
Sent by

Therefore, the protrusion 0 of the embossing roller 04 is used.
5, the oval concave portion 11 and the convex portion 31 having a major axis of 2 mm and a minor axis of 1 mm are formed in a staggered pattern with a major axis pitch P1 = 3 mm and a minor axis pitch P2 = 4 mm. When forming these recesses 11, the surface film 1
0 swells to the back side, but the projections 05 exert a force to draw the surface film 10 on the side wall 12 of the oval recess 11 particularly located in the traveling direction, so that the expansion of the surface film 10 can follow. First, a cut 14 is formed at the boundary with the bottom surface 13. However, the cut 14 may occur on the side wall in the direction opposite to the traveling direction. Next, the embossed polymer is coated on a conveyor 07 with a molten olefin-based adhesive blown from a hot melt coating machine 23 disposed thereabove, and a pair of polymerization rollers 0
8, the nonwoven fabric 40 from the nonwoven fabric roll body 41 is superimposed and adhered to form the water-absorbing mat 01.

When the water-absorbing mat 01 of this embodiment is laid on the bottom of a resin dish and a cut of raw fish or a block of raw meat is placed, as described above, the liquid material such as blood or meat juice that has oozed out of the recess 11 Is absorbed by the washi paper 30 through the cut 14 of the paper, but because the washi itself is bulky and has many voids, water absorption, diffusion,
The water retention is good, and this portion is bulky due to the concave portion 11 and the convex portion 31, so that the capacity is large, and the liquid material is quickly absorbed by the capillary phenomenon peculiar to Japanese paper.
The water-absorbed liquid material is diffused, and the non-woven fabric having excellent bulkiness (especially, Hycline rayon (about 3de) and 3de
Use of a spunlace nonwoven fabric obtained by entanglement of the front and rear PET mixture with a water jet is preferred because it has both high bulkiness and hydrophilicity.) For,
The water retention as a whole is greatly increased (for example, about 30% higher than the conventional two-layer type).

Therefore, even when the liquid material such as blood or meat juice is relatively large, it does not leak from the back surface or the edge of the water-absorbing mat 01. In addition, when the cut and raw meat blocks of the raw fish in the dish are displayed and sold in a cool case set at a low temperature, even if dew condensation occurs on the surface of the dish, the dew is directly absorbed by the nonwoven fabric 40. Therefore, when carried in a carrying bag, water drops on the bottom of the plate due to condensation will cause
(1) It is possible to reduce the risk of touching the raw meat or the like on the top to speed up the deterioration of the quality, or to leak through the gap between the wrap and the plate to the outside from the back of the plate and contaminate the bag.

Since the cut 14 is a horizontal hole opened at the lower part of the side wall, the inside cannot be seen even from above the surface film 10, and the surface film 10 is opaque. Also, it is impossible to visually recognize blood and the like absorbed in the Japanese paper 30 and in a diffused state.

Although the embodiment of the present invention has been described above, the present invention is not necessarily limited to this embodiment, and any change in design without departing from the scope of the present invention is included in the present invention. For example, in the embodiment, the planar shape of the concave portion is an oval shape. However, the concave shape may be a rectangle, an ellipse, or a circle, and the size, arrangement, pitch thereof, and the like may be appropriately determined according to various situations and conditions. The surface film is not limited to polypropylene, but may be another material such as polyethylene or vinylidene chloride. In addition, the adhesive is air-permeable (liquid-permeable) to wrinkles and uneven surface
It is preferable to use a hot-melt adhesive from the viewpoint of uniform and reliable bonding while maintaining the adhesiveness. As the adhesive, EVA resin (ethylene-vinyl acetate copolymer resin) is used.
However, the present invention is not limited to olefin-based resins including, for example, synthetic rubber-based resins and other hot melt adhesives. In addition, the washi is not limited to a 100% wet pulp pulp, and may be a dry crepe or other bulky material, and a bulky Japanese paper having a basis weight of 15 to 50 g / m ² may be used. The non-woven fabric was a mixture of rayon / PET (weight ratio: 30/70 to 90/10, rayon de; 1.5).
-5 denier, PETde; 1.5-5 denier), water jet (spun lace) non-woven fabric, 25-
It is preferable to use each having a concentration of 70 g / m ² , but the present invention is not limited thereto.

Further, to the Japanese paper, functionalities such as antibacterial property, keeping freshness or deodorizing can be imparted. For example, zeolite + silver metal salt or quaternary ammonium salt + chitosan as antibacterial, minerals such as zeolite, plant extracts such as hinokitiol, wasabiol etc. for keeping freshness, zeolite, activated carbon, ceramic for deodorization , Metal salts and the like. These agents or components may be used alone or in combination, for example, by post-processing such as impregnation into Japanese paper, or by mixing Japanese paper mixed with raw cotton mixed with the above components.

Further, as described above, a pulp nonwoven fabric is also effective in terms of water retention as described above. In this case, the basis weight of the pulp nonwoven fabric is preferably 25 to 100.
g / m ² .

[0024]

As described above, according to the present invention, compared to the conventional water-absorbing mat, it is bulky and easy to handle.
And the holding capacity also increased, so that even blood or meat juice leached from raw fish fillets or blocks of raw meat, which were difficult to absorb with conventional water-absorbing mats, are reliably and sufficiently absorbed,
It does not protrude into the film, the surface of the dish, or the edges of these.

Further, even if dew condensation occurs on the surface of a dish containing cuts of raw fish or blocks of raw meat, it is directly absorbed by the nonwoven fabric in contact with the dish. The possibility of touching the raw meat or the like to accelerate deterioration of the quality or leaking out of the dish is reduced.

Since the cut in the recess is a horizontal hole, the inside cannot be seen, and since the film is opaque, blood and the like absorbed and diffused in Japanese paper can also be seen. There is no filth or discomfort. Furthermore, the breaks of the present invention have a very dense distribution and a large number, so that not only the distribution area per unit area is large, but immediately after the breaks, Japanese paper with a high water absorption speed awaits, and on the back surface thereof. The absorption efficiency is high because the nonwoven fabric with excellent water absorption and water retention is in contact.

[Brief description of the drawings]

FIG. 1 is a view showing a part of a water-absorbent mat according to an embodiment of the present invention. FIG. 1A is a longitudinal sectional view, FIG. 1B is a plan view, and FIG.
FIG.

FIG. 2 is an explanatory view showing a state of manufacturing a water-absorbing mat according to an embodiment of the present invention.

FIG. 3 is a view showing a part of a conventional water-absorbing mat, wherein FIG. 3A is a longitudinal sectional view, FIG. 3B is a plan view, and FIG. 3C is a bottom view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 01 Water absorption mat 10 Surface film 11 Concave part 12 Side wall 13 Bottom 14 Break 20 Resin adhesive 21 Resin adhesive 30 Japanese paper 31 Convex part 40 Nonwoven fabric

Claims (6)

[Claims] 1. A water-absorbent mat having a surface coated with an opaque film of a thermoplastic resin, wherein Japanese paper is adhered to the back of the surface film, and a large number of small recesses are partially formed in the surface film by embossing. A water-absorbent mat formed by forming a cut at a boundary between a side wall and a bottom surface of the paper and a non-woven fabric attached to a back surface of the embossed Japanese paper. 2. The water-absorbing mat according to claim 1, wherein the Japanese paper is wet-creped. 3. The water-absorbent mat according to claim 1, wherein the nonwoven fabric is a spunlace nonwoven fabric subjected to water jet treatment or a pulp nonwoven fabric. 4. The water-absorbing mat according to claim 3, wherein the spunlace nonwoven fabric is a mixture of rayon and polyethylene terephthalate. 5. The water-absorbing mat according to claim 3, wherein the thermoplastic resin is polypropylene. 6. The water-absorbing mat according to claim 1, wherein the sticking is performed with a hot melt adhesive.