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CN-117306338-B - Composite-bottom artificial turf, adhesive latex for artificial turf and production method

CN117306338BCN 117306338 BCN117306338 BCN 117306338BCN-117306338-B

Abstract

The invention discloses a compound-bottom artificial turf, adhesive latex for the artificial turf and a production method thereof, wherein the compound-bottom artificial turf comprises grass filaments, base cloth and base cloth, the grass filaments are woven on the base cloth, the bottom ends of the grass filaments protrude out of the bottom surface of the base cloth, the base cloth is positioned below the base cloth, the base cloth and the base cloth are fixed through adhesive latex adhesion, the bottom ends of the grass filaments are covered by the base cloth, the adhesive latex viscosity is 15000-30000 mpa.s, and the compound-bottom artificial turf comprises, by mass, 10-30% of carboxylbuty styrene-butadiene latex, 10-30% of polyvinyl acetate emulsion, 40-80% of calcium carbonate powder, 0.2-0.8% of a dispersing agent, 0.2-1% of a defoaming agent and 0.2-0.8% of a bactericide. The invention solves the problems of poor service performance and short service life of the existing artificial lawn.

Inventors

  • ZHU JIANGFENG
  • SHAO SHIJUN
  • SHI YANGHUA

Assignees

  • 广州傲胜人造草股份有限公司

Dates

Publication Date
20260512
Application Date
20230927

Claims (7)

  1. 1. The composite-bottom artificial turf is characterized by comprising grass filaments, base cloth (1) and base cloth (3), wherein the grass filaments are woven on the base cloth (1), the bottom ends of the grass filaments protrude out of the bottom surface of the base cloth (1), the base cloth (3) is positioned below the base cloth (1), the base cloth (3) and the base cloth (1) are fixed through bonding of adhesive latex (2), and the bottom ends of the grass filaments are covered by the base cloth (3); The base fabric (3) comprises any one of leno cloth, grid cloth, PP cloth or non-woven fabric, and the base fabric (1) comprises any one of leno cloth, grid cloth, PP cloth or non-woven fabric; the base cloth (1) is provided with a plurality of water seepage areas (4), and water seepage channels are formed between the base cloth and the base cloth (3); the production method of the double-bottom artificial turf comprises the following steps: s1, weaving grass yarns on the front surface of a base fabric (1); s2, presetting a water seepage area (4) on the bottom surface of the base cloth (1), coating adhesive latex (2) along the edge of the water seepage area (4), surrounding the water seepage area (4), and then drying; S3, coating adhesive latex (2) on the area outside the water seepage area (4) of the bottom surface of the base cloth (1), covering the bottom surface of the base cloth (1) with the base cloth (3), pressing the base cloth (3) and the base cloth (1) through a pressing roller, and drying to obtain the double-base artificial turf.
  2. 2. The composite-bottom artificial turf of claim 1, wherein in steps S2 and S3, the drying temperature is 100 to 120 ℃.
  3. 3. The double-bottomed artificial turf according to claim 1 or 2, characterized in that the viscosity of the adhesive latex (2) is 15000-30000 mpa.s, calculated as mass percent, comprising the following raw materials: 10-30% of carboxylated styrene-butadiene latex, 10-30% of polyvinyl acetate emulsion, 40-80% of calcium carbonate powder, 0.2-0.8% of dispersing agent, 0.2-1% of defoamer and 0.2-0.8% of bactericide.
  4. 4. The composite-bottom artificial turf of claim 3, wherein the solid content of the carboxylic styrene-butadiene latex is 46-51%, the viscosity is 100-300 mpa.s, and the particle size is 120-180 nm.
  5. 5. A composite-bottom artificial turf according to claim 3, characterized in that the VA value of the polyvinyl acetate emulsion is 75-90%, the pH value is 4-6, the particle size of the emulsion particles is 0.3-0.6 μm, and the solid content is 35-60%.
  6. 6. A composite-bottom artificial turf according to claim 3, characterised in that the dispersant comprises one or more of sodium polymeric naphthalene sulfonate, sodium dodecyl benzene sulfonate, potassium dodecyl benzene sulfonate.
  7. 7. A composite-bottom artificial turf according to claim 3, characterized in that the particle size of the calcium carbonate powder is 300-800 mesh.

Description

Composite-bottom artificial turf, adhesive latex for artificial turf and production method Technical Field The invention belongs to the technical field of artificial lawns, and particularly relates to a double-bottom artificial lawn, adhesive latex for the artificial lawn and a production method thereof. Background Artificial lawns include injection molded artificial lawns and woven artificial lawns (woven lawns), which have a higher degree of imitation than injection molded artificial lawns. The woven lawn is planted on the base cloth by synthetic fiber (i.e. grass yarn) imitating grass leaf shape, and the back is coated with a coating layer to play a role of fixing and protecting the root of the grass yarn. In daily use, the bottom of weaving the lawn, i.e. coating and ground contact, the people walks or runs on weaving the lawn and can make coating and ground friction to appear the condition that the coating part drops, because the bottom of grass silk is protruding in the basal cloth bottom surface, after the coating, still there is the protrusion in the position of grass silk bottom, and the degree of being rubbed in this protruding position is bigger, therefore after weaving the lawn and using a period, the grass silk can drop, and weaving the life of lawn is shorter. In addition, in order to completely cover the bottom ends of the grass filaments, the bottom surface of the whole base fabric is generally completely covered by a coating, which results in a hard whole of the woven lawn and poor water permeability. It is therefore necessary to propose a new artificial lawn which solves the above mentioned problems. Disclosure of Invention In order to solve the technical problems, the invention aims to provide a double-bottom artificial turf, adhesive latex for the artificial turf and a production method thereof, and solves the problems of poor service performance and short service life of the existing artificial turf. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: in a first aspect of the invention, the invention provides a composite-bottom artificial turf, which comprises grass filaments, base cloth and base cloth, wherein the grass filaments are woven on the base cloth, the bottom ends of the grass filaments protrude out of the bottom surface of the base cloth, the base cloth is positioned below the base cloth, the base cloth and the base cloth are fixed through bonding of adhesive latex, and the bottom ends of the grass filaments are covered by the base cloth. Preferably, the base fabric comprises any one of leno cloth, mesh cloth, PP cloth or non-woven fabric, and the base fabric comprises any one of leno cloth, mesh cloth, PP cloth or non-woven fabric. More preferably, the base layer is provided with a plurality of water seepage areas, and water seepage channels are formed between the base plate and the base fabric. In a second aspect of the invention, the invention provides an adhesive latex for an artificial turf, which has a viscosity of 15000-30000 mpa.s and comprises, by mass, 10-30% of carboxylated styrene-butadiene latex, 10-30% of polyvinyl acetate emulsion, 40-80% of calcium carbonate powder, 0.2-0.8% of a dispersing agent, 0.2-1% of a defoaming agent and 0.2-0.8% of a bactericide. Preferably, the solid content of the carboxyl styrene-butadiene latex is 46-51%, the viscosity is 100-300 mpa.s, and the particle size is 120-180 nm. Preferably, the VA value of the polyvinyl acetate emulsion is 75-90%, the pH value is 4-6, the particle size of emulsion particles is 0.3-0.6 mu m, and the solid content is 35-60%. Preferably, the dispersant comprises one or more of sodium polymeric naphthalene sulfonate, sodium dodecyl benzene sulfonate and potassium dodecyl benzene sulfonate. Preferably, the particle size of the calcium carbonate powder is 300-800 meshes. In a third aspect of the present invention, the present invention also provides a method for producing a double-bottom artificial turf, comprising the steps of: s1, weaving grass yarns on the front surface of a base fabric; S2, presetting a water seepage area on the bottom surface of the base fabric, coating adhesive latex along the edge of the water seepage area, surrounding the water seepage area, and then drying; s3, coating adhesive latex on the area outside the water seepage area of the bottom surface of the base cloth, covering the bottom surface of the base cloth with the base cloth, pressing the base cloth and the base cloth by a pressing roller, and drying to obtain the double-bottom artificial lawn. Preferably, in steps S2 and S3, the drying temperature is 100 to 120 ℃. The beneficial effects are that: According to the invention, the base cloth is covered below the base cloth, so that the end part of the grass yarn is protected, the bottom end of the grass yarn is prevented from directly contacting and rubbing with the ground, the service life of the artificial lawn is effectively pro