JP3054781U - Water absorption sheet - Google Patents

Abstract

(57) [Summary] [Object] To provide a water-absorbing sheet which is preferable for maintaining water absorbency and freshness. The present invention relates to a water-absorbing sheet, which is formed from a foamed sheet having an open cell ratio of 30 to 90% and has a pore size of at least 10 to 1000 μm, wherein a large amount of cell liquid comes from fresh food. Some of them have a laminated structure composed of a nonwoven fabric and / or a porous sheet.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a sheet that absorbs moisture from fresh foods such as meat, seafood, vegetables, fruits and the like.

[0002]

[Prior art]

 As the water-absorbing sheet, for example, a laminated body of a porous film and a nonwoven fabric is used, and a water-absorbing sheet that absorbs water and cell fluid from fresh food products is used.

[0003] However, these water-absorbing sheets absorb cell liquid from perishable foodstuffs with a non-woven fabric. Therefore, when the amount of the cell liquid is large, the non-woven fabric alone cannot absorb the cell liquid and flows backward, impairing the appearance of the product, There is a problem that the cell liquid is in contact with fresh food, which is not preferable in maintaining freshness.

[0004]

[Problems to be solved by the invention]

 The problem to be solved by the present invention is that the conventional water-absorbing sheet described above cannot be sufficiently absorbed only by a non-woven fabric or the like when the cell liquid is increased, and flows backward, and the cell liquid comes into contact with fresh foods, and the freshness is maintained. The present invention provides a water-absorbent sheet that solves the above-mentioned problems.

[0005]

[Means for Solving the Problems]

 The first invention is characterized in that holes are formed at least in a range of 10 to 1000 μm made of a foamed sheet having an open cell ratio of 30 to 90%.

The second invention is a laminated structure composed of a foamed sheet having an open cell ratio of 30 to 90% and a nonwoven fabric and / or a porous sheet, and is characterized by being perforated with a pore diameter of at least 10 to 1000 μm. And

[Embodiment of the invention]

An embodiment of the present invention will be described below. The foamed sheet used for the water-absorbing sheet of the present invention may be any one that is hydrophilic and has an open-cell structure. For example, there are a composite resin foam mainly composed of a thermoplastic resin and a plant powder, a natural polymer foam and the like. Also, these surfaces may be laminated.

[0008] The foam sheet used for the water-absorbing sheet of the present invention is hydrophilic and has an open-cell structure, so that it acts as a capillary phenomenon, and retains moisture even when a large amount of cell fluid comes out of fresh food. Well, it can prevent backflow.

The laminated structure of the foamed sheet and the nonwoven fabric and / or the porous sheet used for the water-absorbing sheet of the present invention absorbs the cell liquid from the fresh foodstuff also into the nonwoven cloth and the like. Suitable for foodstuffs.

[0010]

【Example】

Examples will be described below. A water-absorbent sheet in which a 1 mm thick foam sheet mainly composed of a polyolefin resin and wheat cake is perforated at a density of 10 holes / cm ² at about 500 μm, and a laminated structure in which the foam sheet and a nonwoven fabric are bonded together A water-absorbing sheet was manufactured.

[0011] Next, the thawed tuna is placed on the water-absorbent sheet, and the test results in comparison with a conventional water-absorbent sheet are shown in Table 1.

[0012]

[Table 1]

[0013]

[Effect of the invention]

 Since the present invention is configured as described above, it has an appropriate water absorption, prevents the backflow of the cell liquid from the fresh food, and maintains the freshness because the contact area between the fresh food and the cell liquid is not too large. This is preferable in that the appearance of the product is not impaired, so that the problem which has been a problem in the past can be solved.

[0014]

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure of a water absorbing sheet according to the present invention.

[0015]

FIG. 2 is a perspective view showing the structure of the water-absorbing sheet (with nonwoven fabric attached) according to the present invention.

[Explanation of symbols]

 1. Foam sheet having an open cell structure 2. Non-woven fabric

Claims (2)

[Utility model registration claims] 1. A water-absorbing sheet comprising a foamed sheet having an open cell ratio of 30 to 90% and having holes formed at least in a range of 10 to 1000 μm in diameter. 2. A water-absorbent sheet having a laminated structure composed of a foamed sheet having an open cell ratio of 30 to 90%, a nonwoven fabric and / or a porous sheet, and having a hole diameter of at least 10 to 1000 μm. .