JP3714526B2 - Tray mat and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tray mat laid on the bottom of a tray for displaying food, for example, food such as cut meat and fish.
[0002]
[Problems to be solved by the invention]
Meat and fish fillets from which blood juice exudes are usually placed on a tray via a blood juice absorbing sheet called a tray mat and then displayed on a product shelf. However, since the conventional tray mat has a structure in which a pulp sheet or the like is simply cut into a strip shape, it absorbs blood juice, but it is immediately dyed red, so it does not look good. Moreover, once a certain amount or more of blood juice is absorbed, there is a problem that once absorbed, the blood juice is reversed and adheres to the food.
[0003]
Therefore, in recent years, tray mats that do not cause such problems have been developed. This has a structure in which an absorbent body made of a pulp sheet or the like and a blue or green plastic film having pores formed at predetermined intervals are laminated. For this reason, even if the blood juice is absorbed, the appearance does not deteriorate, and the reversal of the blood juice hardly occurs.
[0004]
However, this tray mat has another problem that the absorption of blood juice (that is, penetration of blood juice) is very slow because almost the entire surface of the absorber is covered with a plastic film.
[0005]
In view of these problems, the present inventor has developed an epoch-making tray mat that can absorb blood juice very rapidly without deterioration in appearance or blood juice reversal (Japanese Patent No. 2841282). This structure has a structure in which a net-like sheet (net body) having innumerable through-holes and a sheet-like absorbent body are laminated, and in particular, a net body is adopted as a surface layer material of a tray mat. As a result, the above characteristics were realized.
[0006]
At present, however, tray mats are required to have higher absorption performance, and there is still room for improvement in this regard.
[0007]
Therefore, the problem to be solved by the present invention is to provide a tray mat excellent in liquid absorbency. Moreover, it is providing the tray mat excellent in productivity, and its manufacturing method.
[0008]
[Means for Solving the Problems]
As a result of promoting earnest research to solve these problems, the present inventor has developed a liquid absorbent absorbent layer laminated on a network body in which convex portions and concave portions are alternately and repeatedly formed in a plane. It was found that it should be used. In other words, if the absorber has a shape with a large wavy cross section, in other words, a shape having a corrugated cross section, the actual surface area of the absorber (area for absorbing liquid) becomes much larger than that of a flat one. . Therefore, the liquid absorbability is dramatically improved.
[0009]
By the way, when further research was carried out in order to further increase the absorbability of the liquid, the present inventor has obtained the following new knowledge. In order to further improve the liquid absorption, it is conceivable to increase the thickness of the absorber itself. However, if the above-described unevenness is to be formed on an absorber sheet that is thicker than the current one, a part of the sheet cannot follow the deformation and is often torn during the pressing process. Therefore, yield was poor and it was difficult to increase productivity.
[0010]
Therefore, the present inventor firstly forms unevenness on a thin absorbent sheet (current thickness) by pressing, and then bonds a plurality of absorbent sheets on which the unevenness is formed, particularly two sheets. came up with. That is, unevenness is formed in advance on the thin absorbent sheet that will eventually become the first absorption layer and the second absorption layer, and these are laminated by pressing to form the unevenness, so that the thick absorbent sheet It was ascertained that if the absorbent body is used, the above-mentioned problems are eliminated, that is, the absorbent sheet is not torn and productivity can be improved.
[0011]
The present invention has been made on the basis of such findings,
In a tray mat comprising a sheet-like net body in which a plurality of through-holes in contact with what is placed and an absorbent body having liquid absorbency provided on the lower side of the net body,
The absorbent body,
The first sheet having liquid absorbency in which convex portions and concave portions are alternately formed, and the third sheet having liquid absorbency in which convex portions and concave portions are alternately formed are the first sheet. Are connected so that the concave (or convex) of the third sheet and the convex (or concave) of the third sheet correspond to each other,
This is solved by a tray mat characterized in that convex portions and concave portions are alternately formed.
[0013]
In addition, the above problem
A method for producing a tray mat comprising a sheet-like net having a plurality of through holes, and an absorbent having a liquid absorption property laminated on the net,
A first raw material sheet having liquid absorbency in which convex portions and concave portions are alternately formed, a second raw material sheet having heat fusibility, and a liquid absorbency in which convex portions and concave portions are alternately formed. The third raw material sheet has the convex portion (or concave portion) of the first raw material sheet and the concave portion (or convex portion) of the third raw material sheet facing each other, and the second raw material sheet is A raw material sheet laminating step of laminating so as to be positioned between the first raw material sheet and the third raw material sheet;
The laminated body obtained in this raw material sheet laminating step is pressurized and heated from both sides so that the convex portions fit into the concave portions, and the first raw material sheet and the third raw material sheet are integrated. An absorber forming step of forming an absorber by forming the absorber;
A tray mat manufacturing method comprising: a net body adhering step for adhering the net body to the absorbent body so that the net body and the absorbent body obtained in the absorbent body forming step are laminated. Solved by the method.
[0014]
In the tray mat of the present invention, the through-hole of the mesh body has a small opening diameter on the absorber side so that the liquid that has once been absorbed is effectively prevented from returning (the opening diameter on the absorber side is placed on the article). It is preferable that the gap is a truncated cone (smaller than the opening diameter on the side). That is, with such a structure, the through-hole of the mesh body also plays a check valve role, and as a result, even if the liquid once absorbed returns, the flow is reliably blocked.
[0015]
Further, in order to further increase the productivity, in the method for producing a tray mat according to the present invention, a long product is obtained through the mesh body bonding step, and the long product is further cut by a cutting step further provided. A tray mat having a predetermined size is preferable. That is, as the first, second, and third raw material sheets and the net body, a long continuous body (roll-shaped wound body) is used, and the finished product is cut into a tray mat having a predetermined size. Is desirable.
[0016]
In addition, as said 1st raw material sheet and 3rd raw material sheet, the thing made from a pulp (virgin pulp) is preferable. On the other hand, the second raw material sheet is preferably made of, for example, polyethylene.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 is a perspective view of the tray mat according to the present embodiment, FIG. 2 is a cross-sectional view of the net body portion, FIG. 3 is a cross-sectional view of the absorber portion, and FIG. 4 is a diagram of the manufacturing facility for the tray mat according to the present embodiment. FIG.
[0018]
When the tray mat according to the embodiment of the present invention (hereinafter referred to as the present tray mat) is displayed on a product shelf by placing a food such as liquid that exudes liquid, particularly meat or fish from which blood juice exudes, on a tray. It is laid on the bottom of this tray. That is, the present tray mat plays a role of absorbing and containing blood juice exuded from food in the tray.
[0019]
As can be seen from FIG. 1, the tray mat includes a sheet-like net body 1 and a sheet-like absorbent body 2 laminated (adhered) to the net body 1 as a whole (as viewed macroscopically). Consists of. However, in FIG. 1, the present tray mat is shown in a state where a part of the net body 1 is separated from the absorber 2.
[0020]
Among the above components, the mesh body 1 that comes into contact with the food to be placed is made of a synthetic resin material, and as can be seen from FIG. 2, the mesh body 1 has innumerable through holes 1a. . In particular, the through hole 1a has a mortar shape. More particularly, the through-hole 1a of the netting 1 (in FIG. 2, indicated by R ₁₎ the absorber 2 side of the opening diameter, in the opening diameter of the surface to be placed in the food (Fig. 2, R smaller than indicated by _2), are made of frustoconical voids. In the present embodiment, the net 1 is colored blue or green so that the absorbed blood juice does not stand out.
[0021]
Next, the absorbent body 2 having liquid absorbability bonded to the net body 1 is made of pulp. As can be seen from FIG. 3 in particular, the absorbent body 2 has convex portions 21 and concave portions 22 that are alternately repeated in a plane, that is, adjacent to each other. Therefore, the absorbent body 2 has a wavy cross section (the cross section in the direction perpendicular to the paper surface in FIG. 3 has the same shape).
[0022]
The absorber 2 has a three-layer structure as shown in an enlarged view in FIG. More specifically, the absorbent body 2 includes a first absorbent layer 2a having liquid absorbency, an adhesive layer 2b provided on one surface side of the first absorbent layer 2a, and the first absorbent layer 2b via the adhesive layer 2b. It is completed from the 2nd absorption layer 2c which has the liquid absorption property affixed on the 1 absorption layer 2a. As will be described in detail later, the absorbent body 2 is formed by laminating two raw material sheets on which irregularities are formed in advance, with a flat adhesive sheet having heat-fusibility interposed therebetween, and further applying heat. However, it was obtained by integrating both by pressing. However, in this integrated state, the adhesive layer 2b is porous and the liquid can be freely transferred.
[0023]
Incidentally, the height of the convex part 21 formed in the absorber 2 and the depth of the concave part 22 (the convex part is a concave part when viewed from the opposite surface) are the thicknesses of the three-layer sheet itself constituting the absorbent body 2. It is about several times. On the other hand, the maximum diameter of the convex portion 21 and the concave portion 22 is about several to ten times as large as the opening diameter of the through-hole 1a (opening diameter R ₁ on the absorber 2 side).
[0024]
Furthermore, the net body 1 and the absorbent body 2 are bonded to each other using an adhesive called hot melt. However, it is needless to say that the hot melt is adhered between the bottom surface of the mesh body 1 (open end of the through hole 1a) and the top surface of the convex portion 21 of the absorber 2.
[0025]
Subsequently, a manufacturing method of the present tray mat (a tray mat including the net body 1 in which a large number of through-holes 1a are formed and the absorbent body 2 having a liquid absorbing property attached to the net body 1) will be described (FIG. 4).
[0026]
Manufacture of a tray mat using this method is performed as follows. That is, first, the first raw material sheet A, the second raw material sheet B, and the third raw material sheet C are continuously supplied from the roll-shaped winding bodies 31, 32, and 33, respectively. In addition, the 1st raw material sheet A and the 3rd raw material sheet C are the thin long pulp sheets which have a liquid absorption property in which the convex part and the recessed part were formed adjacently alternately. On the other hand, the second raw material sheet B is a long polyethylene sheet having heat-fusibility.
[0027]
In the present manufacturing method, the raw material sheets A, B, and C that are continuously supplied are positioned so that the second raw material sheet B is located between the first raw material sheet A and the third raw material sheet C. And it laminates | stacks so that the convex part (or recessed part) of the 1st raw material sheet A and the recessed part (or convex part) of the 3rd raw material sheet C may face each other (raw material sheet lamination process).
[0028]
Here, the distinction between the convex portion and the concave portion is relative (depending on the direction in which the raw material sheet is viewed). Therefore, it can be paraphrased that the said raw material sheet lamination process is the operation | work which piles up the 1st raw material sheet A and the 3rd raw material sheet C so that the convex part (or recessed part) may overlap.
[0029]
When the lamination of the raw material sheets A, B, and C is completed, the laminate D obtained thereby is sent to the press device 41. Then, the press unit 41 pressurizes and heats the laminated body D from both sides so that the convex portion of the raw material sheet fits into the concave portion, thereby integrating the first raw material sheet A and the third raw material sheet C together. To form the absorber E (absorber forming step).
[0030]
Subsequently, a net body (long net body) F is continuously supplied from the roll-shaped wound body 34. And while both pass the adhesion | attachment apparatus 51 so that the absorber E obtained in the said absorber formation process and this network F may be in a lamination | stacking state, the network F is absorbed by a hot melt. Adhere to E (network adhesion process).
[0031]
Finally, a long object (long tray mat) G obtained through this mesh body bonding step is sent to the cutting device 61. In this cutting device 61, the long object G sent is cut into a strip-shaped tray mat having a predetermined dimension (cutting step). This tray mat is manufactured through these steps.
[0032]
In the present embodiment, as described above, the tray mat is composed of the net body 1 and the absorbent body 2 in which the convex portions 21 and the concave portions 22 are alternately and repeatedly formed. In other words, as the absorbent body 2 laminated on the net body 1, an undulating thing having a corrugated cross section was used. Therefore, the actual surface area of the absorbent body 2 (the area responsible for the absorption of blood juice) is much larger than the conventional flat one. Therefore, this tray mat can absorb a large amount of blood juice that has permeated through the mesh body 1 as compared with the conventional product, and as a result, exhibits extremely excellent absorption performance.
[0033]
Moreover, in this embodiment, first, the unevenness | corrugation is previously formed in the thin raw material sheets A and C by press processing, Then, the raw material sheets A and C in which this unevenness | corrugation was formed are bonded together, and the absorber 2 is comprised. are doing. In other words, the absorbent body 2 is composed of the first absorbent layer 2a, the second absorbent layer 2c, and the adhesive layer 2b that join the two together. For this reason, the trouble that a part of sheet | seat is torn at the time of manufacture does not arise like the case where the unevenness | corrugation is formed in the absorber by pressing a thick smooth sheet. Therefore, this tray mat and its manufacturing method are excellent in productivity.
[0034]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the tray mat excellent in the liquid absorbency can be provided. Further, the productivity of the tray mat can be improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a tray mat according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a net part. FIG. 3 is a cross-sectional view of an absorber part. Schematic diagram of manufacturing equipment [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Net body 1a Through-hole 2 of net body Absorber 2a First absorption layer 2b Adhesive layer 2c Second absorption layer 21 Convex part 22 Absorbent concave part 31, 32, 33, 34 Winding body 41 Press Device 51 Bonding device 61 Cutting device A First raw material sheet (pulp sheet)
B Second raw material sheet (polyethylene sheet)
C Third raw material sheet (pulp sheet)
D Laminate E Absorber F Net (Long Net)
G Long material (long tray mat)

Claims (4)

In a tray mat comprising a sheet-like net body in which a plurality of through-holes in contact with what is placed and an absorbent body having liquid absorbency provided on the lower side of the net body,
The absorbent body,
The first sheet having liquid absorbency in which convex portions and concave portions are alternately formed, and the third sheet having liquid absorbency in which convex portions and concave portions are alternately formed are the first sheet. Are connected so that the concave (or convex) of the third sheet and the convex (or concave) of the third sheet correspond to each other,
A tray mat, wherein convex portions and concave portions are alternately formed.   The tray mat according to claim 1 or 2, wherein the through-hole of the net is a frustoconical space having a small opening on the absorber side. A method for producing a tray mat comprising a sheet-like net having a plurality of through holes, and an absorbent having a liquid absorption property laminated on the net,
A first raw material sheet having liquid absorbency in which convex portions and concave portions are alternately formed, a second raw material sheet having heat fusibility, and a liquid absorbency in which convex portions and concave portions are alternately formed. The third raw material sheet has the convex portion (or concave portion) of the first raw material sheet and the concave portion (or convex portion) of the third raw material sheet facing each other, and the second raw material sheet is A raw material sheet laminating step of laminating so as to be positioned between the first raw material sheet and the third raw material sheet;
The laminated body obtained in this raw material sheet laminating step is pressurized and heated from both sides so that the convex portions fit into the concave portions, and the first raw material sheet and the third raw material sheet are integrated. An absorber forming step of forming an absorber by forming the absorber;
A tray mat manufacturing method comprising: a net body adhering step for adhering the net body to the absorbent body so that the net body and the absorbent body obtained in the absorbent body forming step are laminated. Method. What is obtained through the net body adhesion process is a long object,
5. The method for producing a tray mat according to claim 4, wherein the long object is cut into a tray mat having a predetermined size by a cutting step further provided.

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