阅读说明：本技术 一种阻水带用无纺布及其制备工艺 (Non-woven fabric for water-blocking tape and preparation process thereof ) 是由 赵永良 于 2020-06-04 设计创作，主要内容包括：本发明属于无纺布制备技术领域,尤其为一种阻水带用无纺布及其制备工艺,包括阻水带主体,所述阻水带主体的中部为无纺布芯层,所述无纺布芯层的顶面固定贴合连接有防水层,所述无纺布芯层的底面贴合连接有阻燃层,所述无纺布芯层的两侧固定连接有加固包边,所述加固包边分别包覆所述防水层的顶边侧和所述阻燃层的底边侧,所述加固包边上均布设置有铆压冲孔。本发明吸水颗粒采用氧化钙粉末或胆矾粉末,其中氧化钙遇水后变为氢氧化钙,其摩尔量不变,由此产生的形变系数小,胆矾能够吸水,并在吸水后反应生成蓝色的五水硫酸铜,工作人员可利用这一特性来检验防水层与无纺布芯层之间是否含有水分。(The invention belongs to the technical field of non-woven fabric preparation, and particularly relates to a non-woven fabric for a water-blocking tape and a preparation process thereof. The water-absorbing particles adopt calcium oxide powder or chalcanthite powder, wherein the calcium oxide is changed into calcium hydroxide after meeting water, the molar weight of the calcium hydroxide is unchanged, the generated deformation coefficient is small, the chalcanthite can absorb water and reacts to generate blue.)

1. The utility model provides a non-woven fabrics for water-blocking tape, includes water-blocking tape main part (1), its characterized in that: the waterproof tape is characterized in that a non-woven fabric core layer (2) is arranged in the middle of the waterproof tape main body (1), a waterproof layer (3) is fixedly attached to the top surface of the non-woven fabric core layer (2), a flame-retardant layer (4) is attached to the bottom surface of the non-woven fabric core layer (2), reinforcing covered edges (5) are fixedly connected to the two sides of the non-woven fabric core layer (2), the reinforcing covered edges (5) respectively cover the top edge side of the waterproof layer (3) and the bottom edge side of the flame-retardant layer (4), riveting punched holes (6) are uniformly distributed on the reinforcing covered edges (5), stripe limiting lines (7) are sewn and connected to the front surface of the waterproof tape main body (1) at equal intervals or according to a set range, water absorbing particles (8) are uniformly distributed between the waterproof layer (3) and the non-woven fabric core layer (2), and flame-retardant, the water absorption particles (8) adopt calcium oxide powder or chalcanthite powder.

2. The nonwoven fabric for a water blocking tape according to claim 1, characterized in that: the non-woven fabric core layer (2) is a polyethylene material layer, the waterproof layer (3) is an asphalt coating or a rubber film, and the flame retardant layer (4) is a halogen flame retardant.

3. The nonwoven fabric for a water blocking tape according to claim 1, characterized in that: the middle wrinkles of the reinforcing covered edges (5) form an M-shaped structure.

4. The nonwoven fabric for a water blocking tape according to claim 1, characterized in that: the reinforcing edge covering (5) is an aluminum alloy material or aluminum-plastic composite material edge.

5. The process for producing a nonwoven fabric for a water-blocking tape according to any one of claims 1 to 4, characterized in that: comprises the following steps:

s1: spraying an adhesive containing water-absorbing particles (8) on the top surface of the non-woven fabric core layer (2), then covering the waterproof layer (3) on the top surface of the non-woven fabric core layer, spraying the adhesive mixed with flame-retardant particles (9) on the bottom surface of the non-woven fabric core layer (2), and then covering the flame-retardant layer (4) on the bottom surface of the non-woven fabric core layer to form a basic material;

s2: the non-woven fabric core layer (2) with the waterproof layer (3) and the flame retardant layer (4) bonded on the two sides is pressed and connected in a heating state, the pressure is one kilogram to two kilograms per square centimeter, and the bonding temperature is 110 ℃ to 130 ℃;

s3: cutting the pressed basic material into strip belts with set width, and connecting the two strip belts end to end, wherein the joint part of the non-woven fabric core layer (2), the joint part of the covering waterproof layer (3) and the joint part of the flame-retardant layer (4) are alternately staggered;

s4: wrapping the reinforced wrapping edges (5) on the non-woven fabric core layer (2), covering the sides of the waterproof layer (3) and the flame-retardant layer (4), and fixing the non-woven fabric core layer, the waterproof layer and the flame-retardant layer by a punching machine or a riveting press to preliminarily form a water-blocking tape main body (1);

s5: and sewing a stripe limiting line (7) to the middle part of the water-blocking tape main body (1) according to a set interval or amplitude.

Technical Field

The invention relates to the technical field of non-woven fabric preparation, in particular to a non-woven fabric for a water-blocking tape and a preparation process thereof.

Background

The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity, no stimulation, rich color, low price, recycling and the like, if polypropylene granules are mostly adopted as raw materials and are produced by a continuous one-step method of high-temperature melting, spinning, line laying and hot-pressing coiling, the non-woven fabric has wide application in the building water conservancy industry, and can be used for geotextile, bituminous roadbed, highway, railway roadbed, soil reinforcement, drainage, river dam, golf course, tennis court cloth, artificial lawn, soil deposition and erosion prevention, sludge prevention, building waterproof material, insulating cloth, sound absorbing material, pipeline wrapping cloth, other building materials and the like; the water-blocking tape in mechanical equipment and cable is made up by using non-woven fabric as base fabric and adding water-absorbing expansion material, and the cable and optical cable are the necessary conveying tool in urban electric power and communication line, but in the course of laying or maintenance the water-blocking tape is stressed by external boundary mechanical pressure, and can sometimes cause water and moisture to enter, and the water and moisture can be invaded into the interior of cable and optical cable, and can result in broken line and reduced insulating property, so that it can ensure safe operation of optical cable and can prolong its service life, and its production method is extensively developed at home and abroad, at present, the domestic water-blocking tape processing method is characterized by that it has sandwich method, uses non-woven fabric as base band, then uniformly disperses water-absorbing agent and filling material on the fabric, and uses a layer of fabric to cover press-roll to form coiled material, and said production method has high gram weight for non-woven fabric, the filler must be enclosed; there is also coating method, which uses adhesive to make water-absorbing polymer attach on non-woven fabric, and then heats it to obtain sheet water-blocking tape, and dipping method, which puts the non-woven fabric into dipping machine, and then dries it to obtain the product. In the manufacturing methods, the non-woven fabric is hot-rolled, the surface of the non-woven fabric is melted into a paper-shaped smooth surface, the water blocking effect is achieved mainly by the water-absorbing expansion material, the non-woven fabric cannot expand, the thickness of the whole water blocking tape is increased, the gram weight is increased, and the cost of the cable and the optical cable is increased.

The existing non-woven fabrics for water-blocking tapes and the preparation process thereof have the following problems:

1. the current nonwoven fabric for the water-blocking tape expands due to absorption after encountering moisture, and whether the nonwoven fabric is in contact with water vapor or not can not be observed intuitively.

2. The existing preparation process of the non-woven fabric for the water-blocking tape is fixed and cannot be flexibly changed according to actual requirements.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a non-woven fabric for a water-blocking tape and a preparation process thereof, and solves the problems that the existing non-woven fabric for the water-blocking tape expands due to absorption after encountering water, whether the non-woven fabric is in contact with water vapor can not be observed visually, and the existing preparation processes of the non-woven fabric for the water-blocking tape are all fixed and can not change flexibly according to actual requirements.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a non-woven fabrics for water-blocking tape, includes the water-blocking tape main part, the middle part of water-blocking tape main part is the non-woven fabrics sandwich layer, the top surface fixed laminating of non-woven fabrics sandwich layer is connected with the waterproof layer, the bottom surface laminating of non-woven fabrics sandwich layer is connected with fire-retardant layer, the both sides fixedly connected with of non-woven fabrics sandwich layer consolidates bordures, consolidate and bordure respectively the cladding the apical flank side of waterproof layer with the base side of fire-retardant layer, it is provided with the riveting and punches a hole to consolidate the equipartition on the bordure, the positive surface equidistance of water-blocking tape main part or sew up according to the range of settlement and be connected with stripe restriction.

According to a preferable technical scheme of the invention, the non-woven fabric core layer is a polyethylene material layer, the waterproof layer is an asphalt coating or a rubber film, and the flame-retardant layer is a halogen flame retardant.

As a preferable technical solution of the present invention, the middle wrinkles of the reinforcing tape form an M-shaped structure.

As a preferred technical scheme of the invention, the reinforcing covered edge is an aluminum alloy material or an aluminum-plastic composite material edge.

A preparation process of non-woven fabric for a water-blocking tape comprises the following steps:

s1: spraying an adhesive containing water-absorbing particles on the top surface of the non-woven fabric core layer, covering the waterproof layer on the top surface of the non-woven fabric core layer, spraying the adhesive mixed with flame-retardant particles on the bottom surface of the non-woven fabric core layer, and covering the flame-retardant layer on the bottom surface of the non-woven fabric core layer to form a basic material;

s2: pressing and connecting the non-woven fabric core layer with the waterproof layer and the flame-retardant layer bonded on the two sides in a heating state, wherein the pressure is one kilogram to two kilograms per square centimeter, and the bonding temperature is between centigrade and centigrade;

s3: cutting the pressed basic material into strip belts with set width, and connecting the two strip belts end to end, wherein the joint part of the non-woven fabric core layer, the joint part of the covering waterproof layer and the joint part of the flame-retardant layer are staggered alternately;

s4: wrapping the reinforced wrapping edges on the non-woven fabric core layer and the sides covering the waterproof layer and the flame-retardant layer, and fixing the non-woven fabric core layer, the waterproof layer and the flame-retardant layer by a punching machine or a riveting press to preliminarily form a main body of the water-blocking tape;

s5: and sewing stripe limiting lines on the middle part of the water-blocking tape main body according to the set interval or amplitude.

(III) advantageous effects

Compared with the prior art, the invention provides the non-woven fabric for the water-blocking tape and the preparation process thereof, and the non-woven fabric has the following beneficial effects:

1. according to the non-woven fabric for the water-blocking tape and the preparation process thereof, the water-absorbing particles adopt calcium oxide powder or chalcanthite powder, wherein the calcium oxide powder is changed into calcium hydroxide after meeting water, the molar weight of the calcium hydroxide is unchanged, the generated deformation coefficient is small, the chalcanthite can absorb water and reacts after absorbing water to generate blue copper sulfate pentahydrate, and a worker can utilize the characteristic to check whether water exists between the waterproof layer and the non-woven fabric core layer.

2. According to the non-woven fabric for the water-blocking tape and the preparation process thereof, the M-shaped reinforcing wrapping edges can be attached to the positions needing water blocking according to the set shape, and the reinforcing wrapping edges can be welded or screwed at the moment, so that the water-blocking tape main body is fixed on the side of mechanical equipment or a cable needing water blocking and fire source isolation.

Drawings

FIG. 1 is a schematic view of the subjective structure of the present invention;

FIG. 2 is a schematic side sectional view of the present invention;

FIG. 3 is a schematic view of a front view process of the present invention.

In the figure: 1. a water blocking tape main body; 2. a non-woven fabric core layer; 3. a waterproof layer; 4. a flame retardant layer; 5. reinforcing the edge; 6. riveting and punching; 7. a stripe limit line; 8. water-absorbing particles; 9. flame retardant particles.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.