JPH0583670B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to sheet materials of natural grass fabric used as surface materials for rugs, tatami mats, building materials, household goods, etc., and floor finishing materials using the sheet materials for the surface layer. The present invention relates to a manufacturing method.

(Conventional technology and its problems) Traditionally, rush, Manila hemp, soft grass, horse grass,
Natural grass fabrics made from rattan and other materials are widely used in various fields due to their unique appearance and good texture. It has the disadvantage that it tends to become fluffy, and cracks and peels easily occur when it is bent.

For this reason, a strengthened natural grass fabric sheet is created by bonding a plate-like body such as a foamed resin sheet or plywood to the back side of the natural grass fabric using an appropriate adhesive such as vinyl acetate resin or urethane resin. However, due to the presence of pectin on the surface of natural grass, there is a problem that the adhesive strength is weak and it easily peels off due to external force. The above-mentioned adhesive laminate material could not be used in applications where force is applied.

Therefore, the adhesive is applied as much as possible into the weaves that form the voids of natural grass fabrics, but if the amount of adhesive applied is too large, the resin etc. will ooze out through the weaves to the surface, staining the surface. There were problems such as a product with extremely low cosmetic properties.

The object of the present invention is to obtain a sheet material made of natural grass fabric that solves these problems, and a floor finishing material with good durability and walkability by using the sheet material as a surface layer.

(Means for Solving the Problems) In order to achieve the above object, the method for producing a sheet material of a natural grass fabric of the present invention is such that, as shown in the drawings corresponding to the embodiments, the back side of the natural grass fabric 1 is , the molten surface of the thermoplastic soft elastic synthetic resin sheet 2 whose surface layer has been heated and melted is brought into contact with the molten surface and pressed, and the molten resin is melted by the elasticity of the thermoplastic soft elastic synthetic resin sheet 2 and the melting of the adhesive side. Penetrates into the texture 1a of the fabric 1,
It is made by solidifying 3 and sticking it together.

Furthermore, the method for manufacturing a floor finishing material of the present invention is to integrate the back side of the sheet material of the natural grass fabric 1 with a base material by bonding it.

(Function) The method for producing a sheet material of natural grass fabric of the present invention includes:
When attaching the thermoplastic soft elastic synthetic resin sheet 2 to the back side of the natural grass fabric 1, the molten resin is absorbed into the weave 1a of the natural grass fabric 1 due to the elasticity and thermal melting of the resin sheet. It penetrates and fills, solidifies in that state, and is firmly integrated with the natural grass fabric 1.
It can prevent peeling and also prevent natural grass from fraying, fuzzing, cracking, etc.

Furthermore, in the method for manufacturing the floor finishing material of the present invention, the natural grass fabric 1 and the base material 4 are laminated and integrated via the thermoplastic soft elastic soft synthetic resin sheet 2, so that even when friction or compressive force is applied, It does not peel off, has improved durability, and the flexibility and elasticity of the thermoplastic soft elastic synthetic resin sheet 2 absorbs compressive strain and thickness unevenness of the sheet material, and maintains appropriate elasticity. A floor finishing material that can be used satisfactorily is obtained.

(Example) To explain an example of the present invention with reference to the drawings, a natural grass fabric 1 woven appropriately using bast fibers or leaf fibers of rush, Manila hemp, soft grass, horse grass, rattan, etc. On the back side, thermoplastic soft elastic synthetic resin sheet 2
Heat the surface side to heat and melt the surface layer,
The molten resin is adhered and integrated by pressing the molten surface against the back surface of the natural grass fabric 1, and the molten resin penetrates into the weave 1a of the natural grass fabric 1 and solidifies while being filled. The portion 3 is firmly welded to the natural grass fabric 1 by exerting an anchor effect.

As the thermoplastic soft elastic synthetic resin sheet 2,
Foamed polyethylene, foamed polyprolene, foamed urethane, and EVA hot melt sheets are used, and those having a thickness of 0.1 to 5 mm, preferably 1 to 3 mm are used.

The method for manufacturing such a natural grass fabric sheet material will be described in more detail.As the thermoplastic soft elastic synthetic resin sheet 2, for example, a 10 times foamed polyethylene resin sheet is used, and this is shown in FIG. Then, it is unrolled from the rolled state, wrapped around the cooling roll 7, and sent out as the cooling roll 7 rotates.

During this feeding, the front side of the resin sheet 2 is heated by a burner 8 or the like opened toward the cooling roll 7 to melt the surface layer of the sheet, while the wound natural grass fabric 1 is unwound and the melted resin is applied to the back side of the sheet. Press roll 9 comes into contact with the sheet surface.
When pressed, the resin sheet 2 is welded to the natural grass fabric 1 by the molten resin, and a part of the molten resin penetrates into the weave 1a of the natural grass fabric 1 and fills the weave 1a. Then, it is cooled and solidified to obtain a sheet material in which the natural grass fabric 1 is lined with the resin sheet 2.

Next, the floor finishing material shown in FIG. 4 will be described. The sheet material of the above-mentioned natural grass fabric is laminated and integrated on the surface of a base material 4 via an adhesive 6.

The base material 4 is preferably a wood fiberboard or a fiberboard made from a mixture of wood fibers and synthetic resin fibers, as they are lightweight and have appropriate conformability. It may be a material commonly used as a finishing material.

As the adhesive 6, ethylene vinyl acetate, epoxy,
A commercially available urethane resin or the like is used, and is applied to the surface of the base material 4 or the surface of the thermoplastic soft elastic synthetic resin sheet 2 and laminated and compressed.

As mentioned above, the thermoplastic soft elastic synthetic resin sheet 2 and the base material 4 are easily and firmly bonded to each other with a general-purpose adhesive, so that the natural grass fabric 1 can be reliably coated on the base material 4. Therefore, it can be applied to floor finishing materials that are subject to friction and clamping force, which conventionally lacked adhesive strength.

Furthermore, even when the natural grass fabric 1 is used by being bent along the corner 5, the intervention of the thermoplastic soft elastic synthetic resin sheet 2 prevents the natural grass fabric 1 from bending at an acute angle, thereby preventing cracking and fraying. .

(Effects of the Invention) As described above, according to the method for producing a sheet material of a natural grass fabric of the present invention, a thermoplastic soft elastic synthetic resin sheet 2 is melted on the back side of the natural grass fabric 1 and the surface layer is heated and melted. The surfaces are brought into contact and pressed, and due to the elasticity of the thermoplastic soft elastic synthetic resin sheet 2 and the melting of the adhesive surface side, the molten resin infiltrates into the texture 1a of the natural grass fabric 1, solidifies 3, and adheres together. Therefore, despite the presence of pectin on the surface of the natural grass, the thermoplastic soft elastic synthetic resin sheet 2 is elastically welded to the natural grass fabric 1. The resin sheet 2 can be adhered with great adhesive strength, and the thermoplastic soft elastic synthetic resin sheet 2 can be adhered with a uniform thickness over one side of the natural grass fabric 1 to form a woven pattern. Since the back surface of the thermoplastic soft elastic synthetic resin sheet 2 is formed to be flat, it is possible to prevent slippage and unevenness in the weave, and therefore, strong secondary adhesion of this sheet material to the base material is facilitated.

Further, due to the elasticity of the thermoplastic soft elastic synthetic resin sheet 2 and the melting of the adhesive surface side, the molten resin penetrates into the weave 1a of the natural grass fabric 1 and solidifies 3, so that the solidified resin is absorbed into the natural grass fabric. It does not ooze out to the surface of the natural grass fabric 1, which eliminates surface stains, and the fibers of the natural grass fabric 1 are firmly connected by the infiltration and solidified resin, which prevents cracking even when the sheet material is folded. This can prevent the occurrence of cracks, peeling, etc.

Furthermore, the floor finishing material of the present invention has a base material 4 and a natural grass fabric 1 via a thermoplastic soft elastic synthetic resin sheet 2.
A floor finishing material that not only improves durability but also exhibits appropriate elasticity and absorbs compressive distortion and thickness unevenness of sheet materials, allowing for good use. is obtained.

[Brief explanation of the drawing]

The drawings show examples of the present invention; FIG. 1 is a partially cutaway perspective view of a sheet material of natural grass fabric obtained by the method of the present invention, FIG. 2 is a partially enlarged sectional view thereof, and FIG. FIG. 3 is an explanatory diagram showing the manufacturing method of the present invention, and FIG. 4 is a sectional view of the floor finishing material obtained by the method of the present invention. 1... Natural grass fabric, 1a... Weave, 2... Thermoplastic soft elastic synthetic resin sheet, 3... Infiltration, solidified resin, 4
…Base material.

Claims (1)

[Claims] 1. The melted surface of the thermoplastic soft elastic synthetic resin sheet 2 whose surface layer is heated and melted is brought into contact with the back surface of the natural grass fabric 1 and pressed to improve the elasticity of the thermoplastic soft elastic synthetic resin sheet 2. A method for producing a sheet material of a natural grass fabric in which the molten resin penetrates into the texture 1a of the natural grass fabric 1 by melting the adhesive side, solidifies 3, and adheres them together. 2. The molten surface of the thermoplastic soft elastic synthetic resin sheet 2 whose surface layer is heated and melted is brought into contact with the back surface of the natural grass fabric 1, and pressed to improve the elasticity of the thermoplastic soft elastic synthetic resin sheet 2 and the adhesive surface side. By melting, the molten resin penetrates into the texture 1a of the natural grass fabric 1, solidifies 3, and adheres it together, and the other side of the thermoplastic soft elastic synthetic resin sheet 2 is adhered to the base material 4 and integrated. A method for manufacturing a floor finishing material characterized by: 3. The method for manufacturing a floor finishing material according to claim 2, wherein the base material 4 is a wood fiberboard.