JPH0657638U - Root-proof waterproof material sheet - Google Patents

Abstract

(57) [Summary] [Purpose] Even if a plant is planted on the surface in contact with the waterproof material, a rhizome is prevented from entering the waterproof material, and a sheet with good workability and root-resistant waterproof material is obtained. [Structure] A root-proof waterproof material sheet, characterized in that a reinforcing material is laminated on the surface and / or in the middle of the waterproof material sheet to which a root-repellent agent is added.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention prevents the entry of the rhizomes into the waterproof material, which occurs when a tree is planted at a location where waterproofing has been carried out, and prevents the water resistance even when planting a tree. The present invention relates to a root-proof waterproof sheet that is retained and easy to install.

[0002]

[Prior art]

 Plants are often planted on rooftops, terraces, etc. of buildings where waterproofing is required. At this time, these rhizomes often penetrated into the waterproof material and reduced the waterproof effect. Up to now, in order to prevent these, woven cloth having root-preventing properties and sheets treated with a rhizome-controlling agent for plants have been applied on the waterproof material at the construction site to prevent them. However, these methods have drawbacks such that the root-preventing sheet is displaced or torn when planting a tree at a waterproofing construction site, and the construction is complicated and manpower is required.

[0003]

[Means for solving the problem]

 As a result of extensive studies made by the present inventor to solve the above-mentioned drawbacks, a root-proof waterproof material sheet is characterized in that a reinforcing sheet is laminated on the surface and / or in the middle of a water-proof material sheet to which a root preventive agent is added. In particular, polymer modified asphalt is preferred for the waterproof sheet. Woven and non-woven fabrics made of synthetic fibers are generally used as the reinforcing material, but woven fabrics having root-preventive properties, woven fabrics and non-woven fabrics treated with a root-preventing agent are also used. These problems have been solved by using them.

In the present invention, the waterproof sheet is asphalt modified with a polymer. Examples of the polymer include resins such as polyethylene and polypropylene, atactic polypropylene, amorphous butene-1, amorphous copolymers of these EP rubbers, elastomers such as polybutadiene and styrene / butadiene rubber, and rubbers. It is a modified product.

Specific examples of the waterproof material are as follows. It is a composition comprising 100 to 1,900 parts by weight of asphalt, preferably 120 to 1,600 parts by weight, based on 100 parts by weight of atactic polypropylene (APP). If the amount of the asphalt component is less than 100 parts by weight, the water resistance, which is a characteristic of asphalt, is inexpensive, and the processability is poor, and conversely, when it exceeds 1,900 parts by weight, the low temperature properties are poor. Further, in the composition of the present invention, a mixture of synthetic rubber, polyolefin polymer, thermoplastic elastomer and the like can be used if necessary. By blending these polymers, the impact resistance of the waterproof sheet can be increased, but it is composed of APP and asphalt for the purpose of mixing with asphalt and especially the fluidity of the waterproof sheet for the torch method. It is preferably 20 parts by weight or less based on 100 parts by weight of the composition. If too much, it becomes difficult to dissolve when mixed with asphalt.

The rubber asphalt composition is a mixture of 100 parts by weight of asphalt, 10 to 40 parts by weight of a rubber substance, 1 to 15 parts by weight of a thermoplastic resin, and 30 to 70 parts by weight of an inorganic filler. In addition, 0.03 to 0.25 parts by weight of sulfur was added and mixed, and the mixture was prepared by heating at 120 to 200 ° C. for 1 to 5 hours. It is preferable because it has excellent properties, moisture resistance, heat insulation, and dimensional stability.

As the asphalt, it is possible to use natural asphalt, naturally occurring substances such as asphaltite, petroleum asphalt such as straight asphalt, blown asphalt and cutback asphalt, and a mixture of these asphalts. As the rubber substance, natural rubber, synthetic rubber, and a mixture thereof can be used. The Mooney viscosity is preferably 30 to 60 ML _{1 + 4} . Synthetic rubbers include styrene / butadiene copolymer rubber (SBR), isoprene rubber (IR), butadiene rubber (BR), neoprene rubber (NPR), ethylene / propylene copolymer rubber (EPR), ethylene / propylene / Examples thereof include diene rubber (EPDM) and butyl rubber.

As the thermoplastic resin, polyethylene, ethylene / vinyl acetate copolymer, ethylene / acryl copolymer, polypropylene, polybutene-1, poly-4-methylpentene-1, polystyrene, acrylonitrile / styrene copolymer, Acrylonitrile-butadiene-styrene copolymer, polyvinyl chloride, polyacrylonitrile and the like can be used, and polyethylene and polypropylene are particularly preferably used. Polyolefin polymers include polyethylene, polypropylene, polybutene, and ethylene-based copolymers, that is, ethylene and propylene, butene, pentene, hexene, heptene, olefins such as octene, vinyl acetate, vinyl propionate, etc. Copolymers or multi-components with one or more comonomers selected from esters, unsaturated carboxylic acid esters such as methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate and their ionomers. A copolymer is mentioned.

Examples of the inorganic filler include particulate inorganic fillers such as calcium carbonate, aluminum hydroxide, magnesium silicate, calcium silicate, aluminum silicate, silicic acid anhydride, clay and carbon black, and asbestos and glass fiber. Fibrous inorganic fillers such as can be used. Any sulfur may be used as long as it is generally used in rubber vulcanization. Other organic compounding agents generally used in rubber compounding, such as process oil, petrolatum, ceresin and petroleum resin, may be added to the rubber asphalt composition.

As the reinforcing material, woven or non-woven fabric of synthetic fibers such as polyester, polyolefin and polyamide is generally used. In addition, there are woven fabrics having root-proof properties, such as a root-proof water-permeable sheet (made of polyester) manufactured by Toyobo Co., Ltd., and dense woven fabric of synthetic fibers is used. Root-resisting woven and non-woven fabrics can also be used as root-retaining agents or micro-encapsulated root-retaining agents made of synthetic fibers such as polyester and polyolefin and embedded in non-woven fabrics. . Such products include those sold as bio barriers by Toyo Green Co., Ltd. and Nissan Kagaku.

Examples of root repellents (root repellents) include phenoxy compounds such as trifluralin and Bayenter's trade name Preventol. These may be added directly to the waterproof material, or may be added in the form of microcapsules.

<Trifluralin> The plant bioactivity of trifluralin is widely used for controlling weeds in the agricultural field of the world because of its environmental safety, mammalian safety, and edible / useful crop safety. Trifluralin has three unique physical and chemical properties: it is extremely insoluble in water, easily vaporizes, and adsorbs to soil particles. Due to these physical and chemical properties, trifluralin has an excellent function of uniformly diffusing into soil, adsorbing to soil, forming a stable treatment layer, and not moving upward or downward due to rain or the like. Hold.

<Plant Physiological Activity of Trifluralin> The bioactivity of trifluralin acts on the formation of new plant cells and suppresses their division. Therefore, trifluralin specifically acts strongly on exposed meristems such as rhizomes and roots of plants, and suppresses their growth. However, it has no killing effect on plants, and has no effect on meristematic tissues such as the above-ground parts of plants, or on growing or growing tissues. In addition, trifluralin is not absorbed by plants, so absorption and transfer does not cause harmful effects on the aerial parts. From this, plant rhizomes and root groups that encounter the trifluralin layer in soil stop their growth, develop lateral roots, and then grow to the other side or change direction or course.

In the present invention, the addition amount of the root repellent is 0.1 to 10 parts by weight, preferably 0.3 to 3 parts by weight, per 100 parts by weight of the waterproof material composition. These are adjusted appropriately depending on the application. Further, a root preventive agent can be applied to the surface of the root preventive waterproof material sheet.

The waterproof material used in the present invention, for example, the APP-modified asphalt (for the torch method) is manufactured as follows. A single sheet or a roofing base paper, a woven or non-woven fabric, a metal thin film or foil, etc., can be used as a waterproof sheet by impregnating, coating or pressure-bonding the asphalt composition. The root repellent is added during the production of the waterproof material composition. The roofing base paper is made of organic or inorganic material such as asbestos felt, asbestos roofing, and perforated felt, and the woven or non-woven fabric is made of glass fiber, nylon, vinylon, polyester, fibrous material, etc. Those using inorganic or organic long fibers or short fibers, and metal thin plates or foils include copper, iron, aluminum and the like. The waterproof sheet of the present invention is excellent in waterproofness, moisture resistance, rustproofness, noise resistance, cushioning, stretchability, electric insulation, weather resistance, chemical resistance, heat resistance, and low temperature flexibility, so It can be preferably used for applications, especially for roofing materials for the torch method. The waterproof sheet has a thickness of 0.5 to 8 mm, preferably 1 to 5 mm. If it is too thin, the waterproof effect is not sufficient, and if it is too thick, it is difficult to apply. Especially in the case of the roofing material for the torch method, the back side of the sheet is melted by heating and pasting while rewinding, so if the sheet is extremely thin, the sheet melts and cuts, and if it is extremely thick, rewinding and heating work simultaneously. I can't. The root-proof waterproof material sheet of the present invention is specifically used by laminating as follows. Waterproof material sheet with added root repellent / reinforcing material / waterproof material sheet / root-proof sheet /, /// etc. Further, an adhesive, an adhesive sheet or the like can be used between the root-proof sheet and the waterproof sheet. In addition, sand grains, silica sand, etc. can be sprayed on the surface of these root-proof waterproof sheets according to the properties of the surface material.

In the production of a laminated sheet, a rubber asphalt composition is heated and melted on a release paper which is continuously supplied, and is flowed down from a T die and applied. When this laminated sheet is passed between a pair of nip rolls, a nonwoven fabric and a root-proof sheet are inserted and laminated.

[0017]

【Example】

 An example of manufacturing the root-proof waterproof material sheet of the present invention is shown below.

Reference Example (Preparation of Rubber Asphalt Composition) A mixture of 33 parts by weight of blown asphalt (penetration: 15) and 155 parts by weight of straight asphalt (penetration: 90) (penetration: 76), process oil (product) Name: ESSOH-1) 37 parts and polyethylene (melt index MI = 25) 20 parts were uniformly stirred and mixed at 160 ° C. To this mixture was added 42 parts of a masterbatch consisting of high cis-1,4-polybutadiene (Moonie viscosity 43ML _{1 + 4} ) and straight asphalt having a weight ratio of 2: 1 and mixed uniformly at 160 ° C. Then, 80 parts of calcium carbonate was further added and stirred, 0.2 part of sulfur was added, and the mixture was stirred at 160 ° C. for 3 hours. Finally, 10 parts of Preventol B2 (manufactured by Bayer) (waterproofing composition). (367.2 parts) to obtain a rubber asphalt composition.

Example 1 A rubber asphalt composition prepared by adding the root-preventing agent prepared in Reference Example was melted at 160 ° C. on a continuously supplied release paper and allowed to flow down from a T die, and a nonwoven fabric was used as a reinforcing material in the meantime. Of a rubber asphalt composition containing release paper / root-repellent added to it, and a release sheet / rubber asphalt composition containing the root-repellent / reinforcing agent / root-repellent A root-resisting waterproof material sheet having a thickness of 4 mm and made of a rubber asphalt composition / release paper to which was added was produced.

[0020]

[Effect of device]

 Since the root-proof waterproof sheet of the present invention is easy to plastically deform, it does not warp or float even when it is installed around a complex accessory, and the waterproof sheet with a root-preventive agent and reinforcement material are laminated to make it waterproof. After construction, even if a plant or a plant is planted on it, the growth of organisms is not hindered, and the waterproof layer is not destroyed, and it is possible to maintain a highly durable and reliable root-proof and waterproof property. In particular, since the sheet of the present invention is a sheet that has both root-proof and waterproof properties, root-proofing and waterproofing can be performed at the same time without impairing root resistance, so the construction speed and simplification Is possible.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a root-proof waterproof material sheet of the present invention.

[Explanation of symbols]

 1 Release paper 2 Waterproof material sheet with added root repellent 3 Reinforcement material

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location E04D 5/10 B 9025-2E

Claims (1)

[Scope of utility model registration request] 1. A root-proof waterproof material sheet, characterized in that a reinforcing material is laminated on the surface and / or in the middle of the waterproof material sheet to which a root-repellent agent is added.