JPH0435168Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> This invention relates to a water-absorbing embossed sheet with a three-layer structure in which a polymer sheet is interposed between upper and lower sheets.

<Prior art> As shown in FIG. 5, a so-called polymer sheet 1 in which a polymer is contained in base paper is interposed between upper and lower nonwoven fabrics 2, 2 to form a sandwich-like sheet 3.
A three-layer water absorbent sheet obtained by pressing the peripheral edge 4 of this sheet is widely used for disposable diapers, bed sheets, etc. According to this conventional sheet, water enters the polymer sheet 1 through the nonwoven fabrics 2, 2, and is absorbed and retained by the polymer sheet, so that water does not leak out to the surface of the nonwoven fabrics 2, 2.
It also has the advantage of maintaining its feel.

<Problems to be solved by the invention> The conventional sheet described above has a poor appearance because the crimping marks on the peripheral edge 4 are exposed, and since the entire sheet is bag-shaped, it easily peels off from the cut edge of the peripheral edge 4. The problem is that the nonwoven fabrics 2, 2 are easily cut by pinching them, and the polymer sheet 1 itself tends to peel off when it gets wet, and the sprayed polymer falls off from the peeled part, reducing the absorption and water retention effect. be.

Furthermore, conventional sheets had the disadvantage that their use was limited because the outside of the polymer sheet was made of nonwoven fabric.

<Means to solve the problem> This idea eliminates the drawbacks of conventional sheets,
That is, a sanderch board 3 with a three-layer structure in which an embossed polymer sheet 2 is interposed between upper and lower sheets 1, 1, in which at least one sheet is made of a water-absorbing material and the other sheet is made of an arbitrary material, is provided. The present invention provides an embossed sheet characterized in that embossed unevenness 5 is provided on the entire surface including the left and right heat-sealed parts 4.

<Example> 1 and 1 are upper and lower sheets, one sheet is made of water-absorbing material such as non-woven fabric or paper, and the other sheet is made of the same water-absorbing material as one sheet, or aluminum foil or transparent aluminum foil. It is made of any material such as a laminated thin film. 2 is a polymer sheet interposed between the upper and lower sheets 1, 1;
The entire surface is embossed by sprinkling polymer onto the base paper. And upper and lower sheets 1, 1 and polymer sheet 2
The sandwich board 3 has a three-layer structure, and has heat-sealed parts 4 on the front and back and on the left and right as shown in the third figure.
is provided, and embossed unevenness 5 is provided on the entire surface including the heat seal portion 4 (see FIGS. 1 and 2).

Now, the process of manufacturing the proposed sheet will be explained based on FIG. 4. First, the polymer 11 is sprinkled on the lower base paper 10, then the upper base paper 10' is polymerized, and the entire surface is embossed with the embossing roll 12. The embossed polymer sheet 2 is then cut with a cutter 13 to obtain an embossed polymer sheet 2 of the required length. Next, the polymer sheet 2 sent by the belt conveyor 14 is interposed between the upper and lower sheets 1, 1 to form the sanderch board 3, and after the sanderch board 3 is heat-sealed on both sides at the first crimping part 15. The front and rear ends are heat-sealed at the second crimping part 16, and then cut to a required length by a cutter 17, and then sent forward by a belt conveyor 18. Finally, the entire surface is embossed with an embossing roll 19 to obtain the water absorbent embossed sheet of the present invention.

<Effect of the idea> This idea has the following unique effects.

(1) Since the embossed unevenness 5 is applied to the entire surface of the sanderch board 3, the upper and lower sheets 1, 1 are closely integrated with the polymer sheet 2, giving the appearance of a single board, and the heat-sealed portion 4 is no longer visible. Good appearance.

(2) Unlike conventional bag-shaped sheets, the entire sheet is flat and tightly adhered, so even if the upper and lower sheets 1 and 1 are pinched, they will not separate from the polymer sheet 2, and the upper and lower sheets will not separate from each other, so they can be peeled off from the cut edge of the periphery. There is no risk of cutting or damage.

(3) Since the polymer sheet 2 is firmly covered by the upper and lower sheets 1, 1, it will not peel off due to water wetting, etc., and the tissue will not be destroyed, preventing the polymer from scattering and absorbing and retaining water. The effect is maintained.

(4) Since it can be used in the same way as a single sheet, it can be used for multiple purposes by using aluminum foil or the like, which is different from conventional materials, for either the upper or lower sheets 1, 1. That is, by providing water absorption and water leakage prevention functions, it has practical value, making it suitable for packaging cut flowers and food products, for example.

(5) The product can be mass-produced at a low cost because the process from manufacturing the polymer sheet to carving the embossed unevenness is carried out in a series of steps as in the example.

[Brief explanation of the drawing]

Figure 1 is a plan view of the proposed sheet, Figure 2 is a sectional view taken along line A-A of the same as above, Figure 3 is a plan view of the sanderch board before embossing and recesses are applied, and Figure 4 shows the manufacturing process of the proposed sheet. A schematic side view and FIG. 5 are cross-sectional views showing a conventional water absorbent sheet. 1, 1...Top and bottom sheets, 2...Polymer sheet, 3...Sandwich board, 4...Heat seal portion, 5...Embossed unevenness.

Claims (1)

[Scope of utility model registration request] A three-layer sanderch board with an embossed polymer sheet interposed between the upper and lower sheets, at least one of which is made of a water-absorbing material and the other sheet made of an arbitrary material, is used to heat-seal the front and rear and left and right parts. A water-absorbing embossed sheet characterized by having embossed irregularities on the entire surface including the embossed surface.