JP3079054B2 - Anti-slip leisure sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to sea bathing, athletic meet,
The present invention relates to a non-slip leisure sheet used as a rug for leisure such as picnics and various events.

[0002]

2. Description of the Related Art Conventionally, a leisure sheet is provided with a synthetic resin layer on one or both sides for the purpose of imparting waterproofness to a sheet base such as a synthetic resin woven or knitted cloth or nonwoven cloth. In many cases, a pattern such as an animal or a landscape suitable for use is printed, and the surface is further covered with a protective layer such as a synthetic resin film.

[0003]

In such a leisure sheet, the protective layer on the surface is made of a thin and smooth surface so that the printed pattern can be seen beautifully. However, there is a drawback that when it behaves, there is no elasticity and it is slippery. When the thickness of the protective layer is increased in order to have elasticity, the transparency is impaired and the picture does not look beautiful. In addition, in the case of leisure seats laid on a hard floor such as a gymnasium, when a person walks on it and kicks, the leisure sheet slides on the floor and moves, and there is a danger that people fall down. There was also. As a result of intensive studies to solve such problems, the present invention has as its object to provide an anti-slip leisure sheet in which a surface layer and / or a back surface layer having excellent aesthetics and elasticity and having anti-slip properties are laminated. Aim.

[0004]

Means for Solving the Problems As a means for technically solving the above-mentioned problems, the present invention provides a printing layer on the back surface of a protective film, and attaches the printing surface of the protective film to a base substrate with an adhesive layer. At least one side of the combined laminate has J
Flexural rigidity measured by IS-K7106 is 100M
The gist of the present invention is a slip-resistant leisure sheet formed by laminating a slip-resistant layer made of a polyolefin resin having a dynamic friction coefficient of less than Pa and 0.6 or more. The polyolefin resin is an ethylene-ethyl acrylate copolymer, and the base material is a high density polyethylene flat yarn cloth.

[0005] The anti-skid leisure sheet thus formed is laminated with an anti-slip layer having elasticity and anti-slip properties and excellent transparency on at least one side, so that even if a person behaves on it, it can be used. Prevents dangers such as slipping on the surface and falling, and also prevents inconveniences such as people falling on the back of the leisure sheet sliding on the floor surface even if a person walks on it and kicking action is added. It is a leisure sheet that looks good and looks beautiful.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of an embodiment of a slip-resistant leisure sheet according to the present invention, in which a protective film 2 on which a printed layer 3 is formed and a base material 1 are fixed via an adhesive layer 4. This shows a structure in which a film made of a polyolefin resin as the anti-slip layer 5 is laminated on both front and back surfaces of the laminate.

As the base substrate 1 used in the present invention, a woven fabric, a knitted fabric, a non-woven fabric, a felt base, etc. made of synthetic fibers can be mentioned, but the tensile strength is 15 kg so as to withstand the use conditions of a general leisure sheet. / 25 mm and a tear strength of preferably 5 kg or more. In this regard, a synthetic resin flat yarn cloth is particularly suitable for the base substrate as having excellent durability and mechanical strength.

The above synthetic resin flat yarn cloth is
This is a cloth in which a flat yarn is formed by slitting and stretching a film formed from a synthetic resin as a raw material, and then using the flat yarn as a weft.
This flat yarn is formed by charging a resin material into an extruder, forming a film by a T-die flat method or an inflation method, slitting the film, stretching the film, and then performing heat treatment to form a flat yarn. I do. The thermal stretching here is performed at a temperature below the melting point of the synthetic resin to be used and above the softening point. The stretching ratio is usually 3 to 15 times, preferably 5 to 10 times.

Synthetic resin Examples of the synthetic resin used for the flat yarn cloth include polyolefins such as high-density polyethylene, medium-density polyethylene, linear low-density polyethylene, and polypropylene, as well as polyvinyl chloride, polystyrene, polyester, and polyamide. be able to. Among them, high-density polyethylene and polypropylene are most preferred from the viewpoints of high mechanical strength, good workability and low cost.

Next, as the protective film 2 used in the present invention, a film having durability and excellent transparency is preferable, and a polyolefin-based film having good workability and low cost is preferable. Include a polypropylene film and a polyethylene film. Here, as the polypropylene film, a stretched film or an unstretched film can be used, but a biaxially stretched polypropylene film having excellent transparency and good workability is particularly preferred. Examples of the polyethylene film include films composed of high-density polyethylene, low-density polyethylene, linear low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer, and the like.

On the back surface of the protective film 2, a print layer 3 of characters, designs, marks and characters suitable for a leisure sheet is applied in order to enhance the design. In order to protect the printing surface, printing is performed on the back surface of the protective film 2 so as not to be exposed to the surface layer, and the printed layer 3 is visually recognized through the transparent protective film 2. In this case, the printing layer 3
Protective film 2 in order to firmly and clearly adhere
Is preferably subjected to a surface treatment such as a corona treatment and an ozone treatment. As the printing ink, a known printing ink using a vehicle such as a polyvinyl chloride resin, a vinyl acetate resin, an acrylic resin, or a urethane resin is used. Further, a normal printing method such as gravure printing can be adopted.

The thus-printed protective film 2
Are laminated via an adhesive layer 4 in a state where the printed surface and the base material 1 are in contact with each other to form a laminate. As a method for providing the adhesive layer 4, a known laminating method such as an extrusion laminating method, a dry laminating method, and a thermocompression laminating method can be adopted. However, the extruding laminating method is preferable in terms of continuous productivity and resin workability. Here, since the adhesive layer 4 is a resin layer for bonding the protective film 2 and the printed print layer 3 to the base substrate 1, a polyolefin-based resin having a polar group or both components for firmly bonding these layers. Synthetic resin of the same type and the same type as the member is preferably used. Specific examples include ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, low-density polyethylene, linear low-density polyethylene, maleic anhydride-modified low-density polyethylene, ethylene-propylene copolymer, and the like. Can be

In the present invention, a leisure sheet is formed by laminating the anti-slip layer 5 on at least one surface of a laminate comprising such a base material 1 and a printed protective film 2.

Here, as the polyolefin resin used for the anti-slip layer 5, it is important to use a polyolefin resin having a flexural rigidity of less than 100 MPa and a kinetic friction coefficient of 0.6 or more as measured by JIS-K7106. By using such a polyolefin-based resin, the front and back surfaces of the leisure sheet have elasticity and a large coefficient of kinetic friction, so that even if a person behaves on it, they do not slip on the surface. However, even if the kicking action is added by walking on it, the back surface of the leisure sheet and the floor surface do not slide, and it is a safe leisure sheet, and the transparency is good, so the leisure sheet with beautiful looks and beautiful appearance Obtainable. Even if a polyolefin-based resin having a flexural rigidity and a dynamic friction coefficient outside the above ranges is used, a leisure sheet having anti-slip properties and excellent appearance cannot be obtained.

Examples of the polyolefin resin include ethylene-ethyl acrylate copolymer, ethylene-methyl acrylate, ethylene-vinyl acetate copolymer, and ethylene-ethyl acetate.
Propylene copolymers and the like and mixtures thereof can be suitably used, and those which satisfy the above-mentioned ranges of the bending rigidity and the dynamic friction coefficient may be selected. Among them, ethylene-ethyl acrylate copolymer is most preferable from the viewpoint of heat resistance, durability, processability, and the like.

As a method for providing the anti-slip layer 5, a known laminating method such as an extrusion laminating method, a dry laminating method, and a thermocompression laminating method can be adopted, but the extruding laminating method is preferable in terms of continuous productivity and resin workability. .

Although the thickness of the anti-slip layer 5 varies depending on the type of the laminate, it is preferably 10 to 100 μm, more preferably 30 to 70 μm. When the thickness is less than 10 μm, the elasticity is not utilized, so that the adhesion tends to be insufficient. On the other hand, when the thickness is more than 200 μm, the rigidity increases, folding becomes difficult, and the weight increases, which is uneconomical.

The leisure sheet obtained in this manner is cut to a predetermined size, and if necessary, the edge of the leisure sheet is folded or sewn with a patch cloth, or eyelets are provided at a predetermined interval on the peripheral edge to form a leisure sheet. Can be used for applications.

Each synthetic resin constituting each member of the leisure sheet of the present invention contains an antioxidant, a lubricant, an ultraviolet absorber, a flame retardant, an antistatic agent, a pigment, an inorganic material, without departing from the spirit of the present invention. Additives such as a filler, an organic filler, a crosslinking agent, a foaming agent, and a nucleating agent may be blended.

[0020]

【Example】

Test method 1. Flexural rigidity: JIS-K7106 compliant 2. Dynamic friction coefficient: ASTM-D1894 compliant 3. Tensile strength: JIS-L1096A compliant 4. Tear strength: JIS-L1096A compliant 5. Sliding friction resistance: Sample sheet cut And 10cm ×
It is fixed on a 10 cm flat plate with a double-sided adhesive tape, inverted, and placed on a synthetic resin plate with the sample side down.
With a 1 kg weight placed near the center on the flat plate to which the sample sheet was fixed, the end of the flat plate was gently pulled in the horizontal direction, and the balanced tension at that time was measured by a spring balance.

Example 1 A biaxially stretched polypropylene film having a thickness of 40 μm was used as a protective film 2. The back surface of the protective film 2 was subjected to corona treatment, and a printed layer 3 was applied to the entire surface of the treated surface by gravure printing. Next, high-density polyethylene (MFR
= 1.0 g / 10 min., Density = 0.960 g / cm ³ )
After forming a film by inflation method, the film is slit into a tape shape, and stretched at a stretching temperature of 115 ° C., an annealing temperature of 120 ° C. and a stretching magnification of 5 times by a hot plate contact stretching method, and a flat yarn having a fineness of 900 denier is formed. Was formed. This flat yarn was used as a weft to obtain a plain weave flat yarn cloth having a woven density of 8 × 8 yarns / inch. The above-mentioned flat yarn cloth is used as a base material layer 1
Between the one surface and the surface of the previously formed protective film 2 on which the print layer 3 has been subjected to the anchor coating treatment, an ethylene-vinyl acetate copolymer (MFR = 8.0 g / 10 m
in., VA content = 10% by weight) as a sand resin, and an adhesive layer 4 having a thickness of 25 μm was formed by extrusion lamination to obtain a laminate. Subsequently, an ethylene-ethyl acrylate copolymer (MFR = 5.0 g /
10 min., EA content = 9 wt%, flexural rigidity = 6
5 MPa, a coefficient of kinetic friction = 0.75) was coated with an anti-slip layer 5 having a thickness of 40 μm by an extrusion lamination method to produce a leisure sheet. The sliding friction resistance of this leisure sheet is 8
80 g, the tensile strength was 24 kgf / 25 mm, and the tear strength was 7.5 kg.

Comparative Example 1 Low-density polyethylene was applied to both sides of the laminate formed in Example 1.
(MFR = 7.0 g / 10 min., Density = 0.916 g /
cm ³ , flexural rigidity = 110 MPa, dynamic friction coefficient = 0.4
Example 2 was carried out in the same manner as in Example 1 except that the layer No. 0) was laminated by an extrusion lamination method. The sliding friction resistance value of this leisure sheet was 480 g.

Comparative Example 2 Using the laminate formed in Example 1 as a sample, the sliding friction resistance of the biaxially stretched polypropylene film surface was measured. The sliding friction resistance value of this leisure sheet was 320 g.

[0024]

As described above, the anti-skid leisure sheet of the present invention has a moderate elasticity and good anti-slip properties when subjected to a specific resin processing, and the printed pattern is beautiful. It is a sheet that is effective as a rug when viewed.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a slip-resistant leisure sheet according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base substrate 2 Protective film 3 Printing layer 4 Adhesive layer 5 Anti-slip layer

Claims (3)

(57) [Claims] 1. A printed layer is formed on the back surface of a protective film, and the printed surface of the protective film and a base material are adhered to each other with an adhesive layer on at least one side of a laminate according to JIS-K71.
A non-slip leisure sheet formed by laminating a non-slip layer made of a polyolefin-based resin having a flexural rigidity of less than 100 MPa and a dynamic friction coefficient of 0.6 or more measured according to No. 06. 2. The method according to claim 1, wherein the polyolefin resin is ethylene-
The non-slip leisure sheet according to claim 1, which is an ethyl acrylate copolymer. 3. The non-slip leisure sheet according to claim 1, wherein the base material is a high-density polyethylene flat yarn cloth.