JP3069909U - Weed control mat - Google Patents

Abstract

(57) [Summary] [Problem] To improve the weed control effect of a weed control mat using needle-punched felt. A felt is formed by performing needle punching on a web layer containing a synthetic fiber having a low melting point, and heating and pressurizing the upper surface or both upper and lower surfaces of the felt, thereby forming the upper surface of the felt or the upper surface of the felt. A high-density layer is formed on both surfaces by fusing low-melting point synthetic fibers to other fibers and applying pressure. A water-permeable sheet is attached to the lower surface of the felt on which the high-density layer is formed so that the felt and the water-permeable sheet are separated by an air layer. Further, a method of joining the water-permeable sheet by the needle punching described above can also be adopted. The high-density layer and the water-permeable sheet serve as a barrier against weeds.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention relates to a weed control mat to be laid on a planting ground, a road slope, and the like.

[0002]

[Prior art]

 Conventional weed control mats often use felt made by needle punching. Because this felt has a generally low fiber density, stems that have been cut from root stocks such as cut grass and kaya may extend through the felt, or flying weed seeds may take root into the felt and take root. There was a problem, and the weed control effect was not perfect.

[0003]

[Problems to be solved by the invention]

 An object of the present invention is to improve the weed control effect of a weed control mat using needle-punched felt.

[0004]

[Means for Solving the Problems]

 Means adopted by the present invention to solve the above-mentioned problems are as follows. As a precautionary note, what is expressed as "upper surface" or "lower surface" in this invention is the expression based on the vertical relationship of each part of the installed weed control mat, The upper and lower selections in the manufacturing process are arbitrary. 1. The felt is made by applying needle punching to a web layer made of cotton mixed with low melting point synthetic fiber. By applying heat and pressure to the upper surface of the felt, a high-density layer is formed on the upper surface of the felt by fusing the low-melting synthetic fiber to other fibers and pressing. This high-density layer prevents the weeds' flying seeds from rooting and surviving into the felt. The upper surface of the felt is heated and pressurized by using a roll above the mangle consisting of a pair of rolls as a heating roll and passing the felt through this mangle, or by blowing hot air onto the upper surface of the felt. Then, a method of passing the felt through a mangle without heating is adopted. The low-melting synthetic fiber contained in the felt is fused to other fibers in the upper part heated above the melting point and pressurized to form a high-density layer. There is no fusion and no high density layer is formed.

[0005] 2. In the same manner as in 1, the felt containing the synthetic fiber having a low melting point is prepared by needle punching. By applying heat and pressure to both upper and lower surfaces of the felt, a high-density layer is formed on both surfaces of the felt by fusing low-melting synthetic fibers to other fibers and applying pressure. No high-density layer is formed in the portion below the melting point. The high-density layers formed on both sides of the felt prevent the arrival of flying seeds and the invasion of weeds from below. This felt has upper and lower high-density layers, but has sufficient water permeability and good water retention. For the heating and pressurizing of the upper and lower surfaces, a method of passing felt through a mangle composed of a pair of heating rolls, or a method of blowing hot air to both sides of the felt and passing the felt through a mangle without heating is adopted.

[0006] 3. A permeable sheet is attached so as to overlap the lower surface of the felt on which the high-density layer is formed, so that the felt and the permeable sheet are separated by an air layer. When only the overlapped edges are stapled and joined by sewing, etc., the felt and the permeable sheet are separated by a thin air layer. The permeable sheet prevents weeds from extending through the felt from below. It is desirable to use a water-permeable sheet that is as strong as possible so that it will not be pierced by plants that have a strong upward elongation, such as suki and kaya. Even if the flying seeds of the weeds rarely take root through the barrier of the high-density layer due to the intervening air layer, the root stops growing in this air layer and the mortality is accelerated.

[0007] 4. A felt in which a water-permeable sheet is joined to the lower surface is created by superimposing a water-permeable sheet on the lower surface of a web layer made of cotton mixed with low melting point synthetic fibers and performing needle punching. By applying heat and pressure to the upper surface or upper and lower surfaces of the felt, a high-density layer similar to the above is formed on the felt surface based on fusion of low-melting synthetic fibers. This high density layer appears strong on the upper surface and weaker on the lower surface with the water-permeable sheet, but acts as a barrier to weed prevention. Since the strength of the permeable sheet is weakened by needle punching in the permeable sheet-bonded felt described in this section, the herbicidal effect is not as high as that described in the above item 3, but the installation of the permeable sheet also serves as the needle punching. The production efficiency is high.

[0008]

[Embodiment of the invention]

 An embodiment of the present invention will be described with reference to an exemplary diagram. A low melting point polyester cotton having a melting point of 80 to 100 ° C is mixed with a normal polyester cotton having a melting point of 250 to 260 ° C. An appropriate mixing ratio is 15 to 20%. This cotton is laid over a spinning card to create a web laminate. The web layer is subjected to needle punching to create felt. The felt is conveyed, and hot air of 120 ° C. is blown on the upper surface thereof, and is pressed through a mangle. By this heating and pressurizing, as shown in FIG. 1, a high-density layer (2) is formed on the upper surface of the felt (1) based on fusion of low-melting polyester fibers. A permeable sheet (4), for example, a spun-bonded non-woven fabric made of polyester fiber is overlaid on the lower surface of the felt, and the edges thereof are joined by stapler, sewing machine, or the like. (5) shows an air layer separating the felt (1) and the water-permeable sheet (4).

A product shown in FIG. 2 is obtained using the same method as described above, except that the heating and pressurizing processes applied to the felt are simultaneously performed on the upper surface and the lower surface. Part names and symbols are the same as those in FIG.

[0010] On the lower surface of the web layer prepared by the same method as described above, a water-permeable sheet similar to the above is superposed and needle punched, and heating and heating are simultaneously performed on the upper and lower surfaces of the obtained felt. A pressurizing process is performed to obtain a product shown in FIG. Part names and symbols are the same as above.

In the present invention, the types of low-melting synthetic fiber cotton and other cotton fibers to be mixed, and the material of the water-permeable sheet are not limited. In addition to the felt (1) provided with the water-permeable sheet (4) shown in FIGS. 1 to 3, the felt (1) itself provided with the high-density layers (2) and (3) shown in FIGS. Each can be used independently. They are laid on the ground where weed control is required, with the required size and high density layer (2).

[0012]

[Effect of the invention]

 The idea was to provide a high-density layer based on the fusion of low-melting synthetic fibers on the felt surface of the mat, and to provide a water-permeable sheet on the lower surface of the mat, so that the flying weed seeds could take root and be laid off from the ground. This is a device that has an excellent effect of preventing the growth of weeds through mats.

[Brief description of the drawings]

FIG. 1 is a sectional view of an example showing an embodiment of the present invention.

FIG. 2 is a sectional view of another example showing an embodiment of the present invention.

FIG. 3 is a cross-sectional view of another example showing the embodiment of the present invention.

[Explanation of symbols]

1 ... felt, 2 ... 3 high density layer, 4 ... water permeable sheet, 5 ... air layer.

Claims (4)

[Utility model registration claims] 1. A felt (1) is prepared by performing needle punching on a web layer prepared by using a cotton mixed with a synthetic fiber having a low melting point, and heating and pressurizing the upper surface of the felt. A grass-proofing mat, wherein a high-density layer (2) is formed on the upper surface of the felt (1) by fusing low-melting-point synthetic fibers to other fibers and applying pressure. 2. A felt (1) is prepared by performing needle punching on a web layer prepared by using a cotton mixed with synthetic fibers having a low melting point, and heating and pressing both upper and lower surfaces of the felt. A high-density layer (2) or (3) formed on both surfaces of the felt (1) by fusing low-melting point synthetic fibers to other fibers and applying pressure. 3. A permeable sheet (4) is mounted on the lower surface of the felt (1) on which the high-density layer is formed, so that the felt and the permeable sheet are separated by an air layer (5). The weed control mat according to claim 1 or 2, characterized in that: 4. A water-permeable sheet (4) is superposed on the lower surface of a web layer made of a cotton mixed with synthetic fibers having a low melting point, and needle punching is performed on the lower surface of the web layer, thereby forming a water-permeable sheet (4) on the lower surface. ), And by applying heat and pressure to the upper surface or upper and lower surfaces of the felt, the felt surface is fused and pressed to other fibers by the low-melting synthetic fiber. A weed prevention mat, wherein high-density layers (2) and (3) are formed.