JPH0857994A - Multi-layer sheet - Google Patents

Abstract

PURPOSE: To provide a multi-layer sheet laid around a sink, a sideboard, etc., which exhibits an antibacterial and insectproofing actions, moisture absorption of water and oil contents, retentivity of absorbed water and oil contents, further, shape retentivity in the case of thermal press bonding, and easy manufacture. CONSTITUTION: Aluminum is vapor-deposited on a polyethylene terephthalate layer 2 to form a deposited sheet 3 having a deposited aluminum layer 3. Powder or chiplike material is filled in a space 7 of the uneven nonwoven fabric 6, a deposited sheet 4 is superposed via an adhesive layer 5, further troughs or flat parts 6b of the fabric 6 are heated to be press bonded to form a multi- layer sheet 1. Antibacterial, insectproofing or deodorizing is conducted by the component dispersed from the power or chiplike material, and the water and oil contents absorbed by the fabric 4 are stored in the space 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, a sink stand,
The present invention relates to a multi-layered sheet that can exhibit a hygroscopic effect as well as an antibacterial or insect-repellent effect when laid in a cupboard, a storage room of a kitchen unit, or any other desired location.

[0002]

2. Description of the Related Art A variety of stains such as soy sauce, sauce, and oil tend to adhere to the sink and the storage room of a kitchen unit, so that the sink easily gets dirty. Also, various bacteria propagate,
It is easy to become unsanitary by the occurrence of insects. Therefore,
In order to prevent these, rugs such as aluminum foil, synthetic resin sheets, or absorbent paper were used. Particularly, in a place where it is necessary to prevent the propagation of various bacteria and the generation of insects, a synthetic resin molded with an antibacterial or insect repellent is sometimes used.

However, although the aluminum foil or the synthetic resin sheet does not allow moisture or oil to pass through, the moisture or oil tends to collect on the surface, and it may become unsanitary, such as sticking to an object placed on it. was there. On the other hand, hygroscopic paper is excellent in hygroscopicity such as moisture and oil, but has a problem that the absorbed moisture or oil content is small and the absorbed moisture or oil permeates to stain the lower side. there were. Therefore, a rug in which a hygroscopic paper is laminated on an aluminum foil is provided to take advantage of these advantages.

[0004]

However, merely laminating the hygroscopic paper on the aluminum foil may reduce the hygroscopicity as compared with the hygroscopic paper alone, but it does not improve the hygroscopic paper. I had to replace the rug. In particular, since the oil content is less likely to volatilize, the absorbency of the oil content is low, and the rug must be replaced more frequently in places where oil is often used.

[0007] Further, the conventional manufacturing method is to heat-bond the hygroscopic paper to the aluminum foil with an adhesive, but the hygroscopic paper is liable to be separated due to poor adhesiveness, or when the thermocompression bonding is performed. There is also a problem that wrinkles and bending occur due to the difference in thermal expansion and contraction ratio between the aluminum foil and the moisture absorbent paper, and a new process is required to correct this.

Therefore, the present invention has an antibacterial or insect-repellent action, is excellent in hygroscopicity of water or oil, retains absorbed water or oil, and is excellent in shape retention during thermocompression bonding, and is easily manufactured. It is intended to provide a multi-layer sheet that can be used.

[0007]

A multi-layer sheet of the present invention for solving the above-mentioned problems is formed by vapor-depositing aluminum on a polyethylene terephthalate resin layer to form a vapor-deposited sheet, and a non-woven fabric is formed on the sheet through an adhesive layer. The non-woven fabric is laminated, and a part of the non-woven fabric is adhered to form a space inside the non-adhesive non-woven fabric, and powder or chips having sanitary effects such as antibacterial, insecticidal, deodorant or deodorant in the space. It has a structure in which a blank is filled.

Further, it is preferable that a reinforcing resin layer is interposed between the vapor-deposited sheet and the non-woven fabric, and the reinforcing resin layer is adhered to the multilayered sheet because the strength of the multilayer sheet can be increased.

[0009]

According to the multi-layered sheet of the present invention, the polyethylene terephthalate resin layer constituting the vapor-deposited sheet has a shape-retaining function such as increasing the heat resistance and imparting tension to the sheet, and aluminum functions as a gas barrier. The filled powdery or chip-like material has antibacterial and insecticidal effects, deodorant and deodorant effects as well as the function of absorbing and accumulating water and oil absorbed by the non-woven fabric, and further enhancing cushioning properties. .

Further, the reinforcing resin layer functions to reinforce the shape retention function.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a multi-layer sheet 1 which is an embodiment of the present invention, and FIG. 2 is an enlarged sectional view taken along line II-II thereof.

In the multi-layer sheet 1, a polyethylene terephthalate (hereinafter referred to as PET) layer 2 is vapor-deposited with aluminum to form a vapor-deposited sheet 4 having a vapor-deposited aluminum layer 3, and the vapor-deposited sheet 4 has a vapor-deposited aluminum layer 3 side surface. ,
A large number of peaks 6a, 6a, 6a
..Valleys or flat portions 6b, 6b, 6b between and around
The non-woven fabric 6 formed with ... is bonded to the valleys or the flats 6b, and the space 7 inside the peaks 6a has a hygienic effect such as antibacterial, insecticidal, deodorant or deodorant in advance. It is filled with the chip-shaped material 8.

Here, the PET layer 2 is easy to deposit aluminum, has excellent heat resistance, and has appropriate strength and tension. The vapor-deposited aluminum layer 3 also has excellent heat resistance and gas barrier property. Since it has the vapor deposition sheet 4, it has appropriate strength and tension, and is excellent in heat resistance and gas barrier property. Further, since the transparency of PET is extremely high, the gloss peculiar to aluminum can be brought out, and the vapor deposition sheet 4 also has an excellent aesthetic appearance.

The thickness of the vapor-deposited aluminum layer 3 is 0.4 to
The thickness is preferably 0.6 μm, but the thickness may be greater than that. On the other hand, the PET layer 2 has a thickness of 12 to 50 μm.
m is sufficient. Strength and tension can be suitably increased by increasing the thickness, but commercially available thicknesses of 12 to 1
Cost can be reduced by using a PET film or sheet of 5 μm.

The adhesive layer 5 is formed by coating or co-extruding on the PET layer 2 using polyolefin resin, urethane resin, synthetic rubber, ethylene vinyl acetate copolymer resin or the like as a material. The thickness of the adhesive layer 5 is 15 to 3
The thickness may be set to 0 μm, but a preferable example is 20
It may be formed to a thickness of about μm. The adhesive layer 5 is made of PET.
Although it may be formed on the entire surface of the layer 2, it may be formed partially on the portion where the nonwoven fabric 6 is bonded.

As the non-woven fabric 6, a spun-pond one made of a thermoplastic resin such as a polyolefin resin may be used. However, it is desirable that the moisture or oil content is excellent in moisture absorption and permeability.

The nonwoven fabric 6 in the form shown in FIGS. 1 and 2 is, for example, about 25 mm long, 3-5 mm wide, and 1 mm high on the roll surface.
A roll formed by arranging protrusions of about 3 mm to 3 mm in parallel is used to form unevenness by hot roll molding. The shapes of the peaks 6a and the valleys to the flat portions 6b of the non-woven fabric 6 are not limited to the example of FIG. 1 and can be set arbitrarily. For example, a large number of hexagonal peaks in plan view may be provided in a row to form a honeycomb shape, and a large number of hexagonal spaces may be independently formed, and the powdery or chip-shaped material 8 may be filled in the interior. It is also possible to form a plurality of slender shaped mountain portions in a staggered manner so as to form a slender shaped space portion independently, and to fill the same powdery or chip-shaped material 8 as described above inside the space portion. It is preferable that the space portions are not so large in size and that a large number of them are continuously arranged in parallel.

The powdery or chip-like material 8 is preferably wood sawdust powder, especially hiba containing hinokitiol, cypress sawdust powder or crushed chips. Alternatively, a charcoal powder or other powdery or chip-like material having an antibacterial or insecticidal effect or a hygiene-preferring action such as deodorant or deodorant can be used.

The multilayer sheet 1 is obtained by filling the space 7 of the textured nonwoven fabric 6 with the powdery or chip-like material 8 and stacking the vapor deposition sheet 4 with the adhesive layer 5 therebetween. It can be manufactured by thermocompression bonding the valley portion to the flat portion 6b. Since the strength and heat resistance of the vapor-deposited sheet 4 are enhanced by vapor-depositing aluminum on the PET layer 2, the time of thermocompression bonding is higher than the case of thermocompression-bonding a hygroscopic paper to an aluminum foil via an adhesive. It is possible to preferably prevent the occurrence of wrinkles and flexures, and it is possible to omit extra steps such as a wrinkle straightening step, so that the manufacturing is facilitated and the manufacturing cost can be reduced.

Since the multi-layer sheet 1 of the present invention has the above-mentioned multi-layer structure, it penetrates through the nonwoven fabric 6 and the powdery or chip-like material 8 inside has a component having an antibacterial or insecticidal or deodorant action. It is possible to dissipate and place the surrounding environment in an antibacterial or insect-proof or deodorant environment, and if the material has a deodorizing action, it can also perform a deodorizing action. At the same time, a considerable amount of water or oil absorbed by the nonwoven fabric 6 can be retained in the space 7. Further, the space portion 7 filled with the powdery or chip-like material 8 of the non-woven fabric 6 also functions as a cushion.

Which one is used as the front and back surfaces can be selected according to the preference of the user and the situation of the place of use. For example, the nonwoven fabric 6 side is used as the front surface around the sink, cupboard, kitchen unit storage room, etc. It can also be used as a laying sheet of a container, or can be used for packaging with the vapor deposition sheet 4 side as a surface, and can be used for packaging containers where water or oil may leak, or objects around which water drops may adhere. It can also be used to

Next, a multilayer sheet 10 having a structure different from that of the multilayer sheet 1 will be described.

As shown in FIG. 3, the multi-layer sheet 10 has an adhesive layer 5 and a reinforcing resin layer 11 sequentially formed on the side surface of the evaporated aluminum layer 3 of the evaporated sheet 4, and the adhesive layer 5 and the reinforcing resin layer 11 are formed on the adhesive layer 5. The nonwoven fabric 6 formed by previously filling the space 7 inside the mountain portion 6a with the powdery or chip-like material 8 having hygienic action such as antibacterial, insecticidal, deodorant or deodorant is laminated and The valley portion or the flat portion 6b of the reinforcing resin layer 1
It is formed by adhering to No. 1.

Here, the reinforcing resin layer 11 is formed by coating or co-extruding the adhesive layer 5 on a non-stretched polypropylene (CPP) resin. Since the CPP resin has high adhesiveness with the nonwoven fabric 6 and is also effective as an adhesive for thermocompression bonding, not only can the thermocompression bonding of the nonwoven fabric 6 be made reliable and easy, but also the PET layer 2 can be reinforced. Therefore, it is possible to more preferably prevent wrinkles and bending during production.

The thickness of each layer of the multilayer sheet 10 is, for example, 12.4 to 50.6 μm for the vapor deposition sheet 4 and the adhesive layer 5.
Is 15 to 30 μm, and the reinforcing resin layer 11 is 15 to 60 μm. As a more preferable example, the vapor deposition sheet 4
Is 12.4 μm, the adhesive layer 5 is 20 μm, and the reinforcing resin layer 11 is
Is 15 μm.

FIG. 4 shows a multilayer sheet 20 having a structure different from that of the multilayer sheet 10.

In this multilayer sheet 20, a reinforcing resin adhesive layer 21 and an adhesive layer 5 are sequentially formed on the side surface of the vapor-deposited aluminum layer 3 of the vapor-deposited sheet 4, and a nonwoven fabric 6 is formed with the reinforcing resin adhesive layer 21 and the adhesive layer 5 interposed therebetween. And the other structure is formed in the same manner as the multilayer sheet 10.

Here, the reinforcing resin adhesive layer 21 is formed by coating or co-extruding an ethylene vinyl acetate copolymer (EVA) resin on the vapor deposition sheet 4. The EVA resin has good compatibility with aluminum and is also effective as an adhesive for thermocompression bonding, so that the multilayer sheet 20 can be reinforced by applying tension.

As an example of the thickness of each layer of the multilayer sheet 20, the vapor deposition sheet 4 is 15.4 to 50.6 μm, the reinforcing resin adhesive layer 21 is 15 to 40 μm, and the adhesive layer 5 is 15 to 40 μm.
It should be m. As a more preferable example, the vapor deposition sheet 4 is 15.4 μm, the reinforcing resin adhesive layer 21 is 20 μm,
The adhesive layer 5 has a thickness of 30 μm.

[0031]

Since the multilayer sheet of the present invention has the above-mentioned constitution, it can be formed at a low cost without wrinkling, has an appropriate tension on the multilayer sheet itself, and has a PET It can be finished in a more suitable appearance with aluminum vapor deposition, and can exhibit antibacterial, insecticidal, deodorant or deodorant effects. At the same time, it can absorb and accumulate moisture and oil sufficiently, which is extremely effective in maintaining the environment of the installation place hygienic, and does not require frequent replacement of the multi-layer sheet, and is a cushion. It has properties and is convenient to use.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a multilayer sheet of the present invention with an intermediate portion omitted.

FIG. 2 is a partially enlarged sectional view taken along line II-II of FIG.

FIG. 3 is a cross-sectional view showing another embodiment different from FIG.

FIG. 4 is a sectional view showing still another embodiment different from FIG.

[Explanation of symbols]

 1, 10, 20 Multi-layer sheet 2 PET layer 3 Evaporated aluminum layer 4 Evaporated sheet 5 Adhesive layer 6 Nonwoven fabric 7 Space part 8 Powder or chip material 11 Reinforcement resin layer 21 Reinforcement resin adhesion layer

Claims (2)

[Claims] 1. A polyethylene terephthalate resin layer is vapor-deposited with aluminum to form a vapor deposition sheet, and a non-woven fabric is laminated on this sheet via an adhesive layer.
A structure in which a part of it is bonded and a space is formed inside the non-bonded non-woven fabric, and this space is filled with a powdery or chip-like material having sanitary effects such as antibacterial, insect control, deodorant or deodorant. A multilayer sheet having 2. The multi-layer sheet according to claim 1, wherein a reinforcing resin layer is interposed between the vapor-deposited sheet and the non-woven fabric and these are adhered to each other.