CN110983618A

CN110983618A - Light-weight structure flexible anti-skid non-woven material

Info

Publication number: CN110983618A
Application number: CN201911292242.1A
Authority: CN
Inventors: 宋卫民; 张恒; 史建宏; 甄琪; 袁建根; 季新刚; 徐东
Original assignee: Suzhou Duorou New Material Technology Co ltd
Current assignee: Suzhou Duorou New Material Technology Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-04-10
Anticipated expiration: 2039-12-13
Also published as: CN110983618B

Abstract

The invention discloses a flexible anti-skid non-woven material with a light structure, which comprises a high-fluffy fiber layer and anti-skid fiber layers arranged on the upper side and the lower side of the high-fluffy fiber layer, wherein three fiber nets are entangled under the action of water jet at 80-280 bar, and the anti-skid fiber layer on one layer has concave-convex patterns; the high-loft fiber layer is a fiber layer which is composed of one or two kinds of fibers, has the surface density of 10-80 g/m2 and the porosity of 80-90%; one of the fibers is one of polyethylene terephthalate fiber, polypropylene fiber, polylactic acid fiber, polyamide fiber, polyacrylonitrile fiber and polyurethane fiber, the fiber diameter is 14-28 μm, and the number of crimps is as follows: 15-20 pieces/25 cm, and the length is 38-65 mm; the other fiber is one of cotton fiber, viscose fiber, bamboo fiber and acetate fiber, the diameter of the fiber is 14-28 mu m, and the length of the fiber is 38-65 mm.

Description

Light-weight structure flexible anti-skid non-woven material

Technical Field

The invention relates to the field of fiber materials, in particular to an anti-skid non-woven material with a light structure.

Background

The anti-skid material can help people to obtain control force on a slippery object, and particularly, in transportation, the phenomenon of collision and breakage of the object caused by slippage is easy to occur due to insufficient friction performance, so that people pay more and more attention to the phenomenon. Therefore, a high friction, lightweight material is often used to increase the safety factor of the article. The current common packaging type antiskid material mainly takes foam and plastic bubble pads as main materials; however, the foam material is mainly prepared by a chemical foaming method, and has the problems of low strength, easy crushing under stress and secondary pollution caused by residual solvent; the plastic bubble pad causes secondary pollution to the environment, and the strength of the bubble pad is low, so that the bubble pad is difficult to be used for a second time. Therefore, the high-friction anti-slip material which can be used repeatedly is obtained, so that the probability of toppling and slipping of the article is reduced, the object is prevented from being collided, and the article is protected after being toppled over, and the high-friction anti-slip material has a great application prospect.

The non-woven material is used as a porous medium consisting of fibers, has wide raw material sources and short process flow, and the use occasions of the non-woven material are wider due to the cloth shape of the non-woven material. Currently, most of known non-woven anti-skid materials are compounded with other friction materials and filled with a certain amount of fluffy substances to obtain the shock absorption effect. For example, patent CN 208463564U tries to compound silica gel containing foaming agent with non-woven fabric with thickness of 5mm through adhesive pressure sensitive adhesive to obtain a product with anti-skid and shock-absorbing functions; CN 206228501U utilizes glue to compound the medical non-woven fabrics layer of wave shape and high wet-conducting polyurethane membrane, and fills active carbon particle in the middle cavity portion of wave shape to obtain the shock attenuation effect. However, these methods have the defects of using a large amount of chemical glue, and have large thickness and hardness, so that the requirements of flexibility, light weight and shock absorption cannot be met.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: a flexible non-slip nonwoven material of lightweight construction is provided.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the flexible anti-skid non-woven material with the light structure comprises a high-fluffy fiber layer and anti-skid fiber layers arranged on the upper side and the lower side of the high-fluffy fiber layer, wherein three layers of fiber nets are entangled under the action of water jets at 80-280 bar, and the anti-skid fiber layer on one layer is provided with concave-convex patterns; the high-loft fiber layer is formed by one or two fibers and has the surface density of 10-80 g/m²A fiber layer with a porosity of 80-90%; one of the fibers is one of polyethylene terephthalate fiber, polypropylene fiber, polylactic acid fiber, polyamide fiber, polyacrylonitrile fiber and polyurethane fiber, the fiber diameter is 14-28 μm, and the number of crimps is as follows: 15-20 pieces/25 cm, and the length is 38-65 mm; the other fiber is one of cotton fiber, viscose fiber, bamboo fiber and acetate fiber, the diameter of the fiber is 14-28 mu m, and the length of the fiber is 38-65 mm.

As a preferable scheme, the dynamic friction coefficient of the anti-skid fiber layer is 0.2-2.0 in the longitudinal direction and 0.3-2.1 in the transverse direction; the flexibility is measured as a resistance of 2.8 to 5.8cN by the Handle-O-Meter test method according to ASTM D2923-95.

As a preferable scheme, the anti-skid fiber layer is 13 to up in diameter25 μm filament fiber, the cross section of the fiber is eccentric hollow, the hollowness is 15-35%, the eccentricity is 30-80%, and the surface density is 3-50 g/m²The porosity is 85-95%; the filament fiber is made by a hollow eccentric spun-bonding forming method which takes non-viscous high molecular material as raw material; the chemical composition of the non-sticky high polymer material is as follows: non-elastic thermoplastic high molecular polymer: 10-80 wt%; elastic thermoplastic high molecular polymer: 20-90 wt%; functional master batch: 0-5 wt%; 0-35 wt% of filler.

As a preferable scheme, the non-elastic thermoplastic high molecular polymer is one or a mixture of more of polypropylene, polyethylene and polylactic acid.

In a preferred embodiment, the elastic thermoplastic high molecular polymer is: one of polyolefin elastomer, thermoplastic polyurethane, copolyester elastomer and polyamide polyether block thermoplastic elastomer.

As a preferred scheme, the functional master batch is: one or more of color master batch, antistatic master batch, flame-retardant master batch, antibacterial master batch, soft master batch and hydrophilic master batch.

As a preferable scheme, the filler is one or more of calcium carbonate, titanium dioxide, barium carbonate, fly ash, mica powder, kaolin, talcum powder and tourmaline, and the fineness of the filler is 600-3500 meshes.

As a preferable scheme, the water jet adopts a streamline shrinkage type water needle plate, the diameter of a large hole of the water needle plate is 0.6mm, the diameter of a small hole of the water needle plate is 0.08mm, and the distance between the holes is 0.4-0.5 mm; the water jet times are 3-4; the adopted net supporting curtain has the aperture ratio of 30-60% and the air permeability of 850-1400 m³/m²·h。

As a preferable scheme, the drying after the spunlace is hot air penetration drying, the temperature is 95-120 ℃, and the action time of the hot air is 5-10 min.

The invention has the beneficial effects that:

the non-woven material has two anti-skid characteristics, and a proper contact surface can be selected according to the use environment, so that the non-woven material is wide in use range; in addition, the multi-level structure has better strength and can be used for multiple times, and meanwhile, the cloth-shaped structure of the anti-skid non-woven material can be suitable for packaging pieces with different shapes, so that the anti-skid non-woven material can be well applied to the fields of article packaging, friction pads, household wiping, shoe covers, quilt covers, sock covers, surgical drapes, surgical table cloth, beauty mats, toilet mats, shelf display tables and the like.

The anti-skid fiber layer of the anti-skid non-woven material adopts an eccentric section with the hollowness of 15-35%, so that the anti-skid non-woven material not only can provide light weight characteristic, but also has better shock absorption characteristic, and is very suitable for packaging articles; meanwhile, the hollow fiber structure also provides larger liquid holding capacity, and improves the liquid absorption characteristic and the heat retention property of the hollow fiber structure; in addition, the hollow eccentric structure can generate irregular curling after being heated, so that better flexibility and fluffiness are generated, and a more definite curling effect can be generated based on a friction enhancing procedure of water jet and a thermal drying process.

In addition, the large-scale concave-convex lines generated by the high-pressure water jet not only provide certain attractive design, but also provide good section friction effect by utilizing the concave-convex difference.

The concave-convex structure and the anti-skid fiber layer have a hollow fiber section which provides a static air storage space, and have better heat insulation effect and sound absorption property.

The anti-slip non-woven material realizes entanglement and consolidation forming among fibers by using the impact effect of high-pressure water jet, does not use any chemical reagent in the processing process, and has the characteristics of environmental protection and pollution-free production.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic sectional view of example 1 of the present invention;

FIG. 3 is a schematic view of 3D water jet friction enhancement of example 1 of the present invention;

FIG. 4A schematic preparation scheme of example 1

FIG. 5 schematic cross-sectional view of fiber of example 1

FIG. 6A schematic preparation scheme of example 2

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1, as shown in fig. 1 and 2, a lightweight structured non-slip nonwoven material was compositely formed by two non-slip fiber layers 2-2 and 2-4 and a high-loft fiber layer 2-3 in between the two non-slip fiber layers by high-pressure water jets as shown in fig. 3, and thereby a textured structure 2-1 was formed on the surface of one non-slip fiber layer; the concave-convex pattern structure is a prismatic combined structure;

the anti-slip fiber layer is made of non-viscous polymer material by spun-bonding method, and has fiber fineness of 16.8 + -1.9 μm, hollowness of 30.7 + -2.2%, and surface density of 10.5 + -1.8 g/m²A fiber aggregate having a porosity of 90%; the chemical composition of the non-sticky high polymer material is as follows: non-elastic thermoplastic high molecular polymer: 20 wt%; elastic thermoplastic high molecular polymer: 60 wt%; functional master batch: 5 wt%; 15 wt% of a filler; the non-elastic thermoplastic high molecular polymer is polypropylene, the elastic thermoplastic high molecular polymer is a polyolefin elastomer, and the functional master batch is a soft master batch; the filler is calcium carbonate with the fineness of 600-3500 meshes;

the dynamic friction coefficient of the anti-skid fiber layer with the concave-convex patterns is as follows in the longitudinal direction: 0.63 and 0.73 in the transverse direction; the dynamic friction coefficient of the other anti-skid fiber layer is as follows in the longitudinal direction: 0.49 and 0.59 in the transverse direction;

the high-fluffiness fiber layer is prepared by taking polyester fiber with the fiber diameter of 25 mu m and the length of 38mm as a raw material and carding and forming the raw material to obtain the high-fluffiness fiber layer with the surface density of 40 +/-3.2 g/m²A fiber assembly having a porosity of 82.23%; number of crimps: 20 of the cells are distributed in a length of 25cm,

in the compounding process of the high-pressure water jet, a sample 3-2 formed by three layers of laminated materials is sent into a spunlace region under the supporting action of a supporting net curtain 3-1, and simultaneously, high-pressure water enters a spunlace head 3-4 through a pipeline 3-3 and passes through a filter device 3-5 and then passes through the spunlace head 3-6 to form a high-pressure water jet 3-7; in the spunlace area, the three layers of samples are tightly entangled together to form an integral structure under the action of high-pressure water jet 3-7 and a net supporting curtain 3-1, and then the integral structure is subjected to heat drying to form the antiskid non-woven material with a light structure.

This example uses a one-step spunbond-carded + hydroentangled process, see fig. 3, with the following operating steps:

(1) spunbond formation of non-slip fibrous layers

(a) Blending the raw materials in a high-speed mixer 4-1-1 and 4-2-1 according to the proportion;

(b) feeding the blended raw materials into hoppers 4-1-3 and 4-2-3 of an extruder respectively through feeding pipes 4-1-2 and 4-2-2;

(c) then melt-mixed in extruders 4-1-4 and 4-2-4 respectively and fed into spunbond die heads 4-1-6 and 4-2-6 to be extruded after passing through metering pumps 4-1-5 and 4-2-5, and formed into non-slip fibers 4-1-8 and 4-2-8 through the action of cold cutting and drawing devices 4-1-7 and 4-2-7;

(d) the anti-skid fiber layers 4-2-9 and 4-1-9 are respectively formed under the negative pressure action of the suction device 4-3-3 and the left and right supporting of the supporting net curtain 4-3-2 by the anti-skid fiber;

(2) carding of high loft fibrous layers

(a) Forming a high-fluffiness fiber layer 4-3-1 on a carding machine by raw materials according to a ratio;

(d) the high-loft fiber layer 4-3-1 is laid on the anti-skid fiber layer 4-2-9 under the action of the suction device 4-3-3;

(3) high pressure water jet composite forming

The anti-skid fiber layer 4-2-9, the high-fluffiness fiber layer 4-3-1 and the anti-skid fiber layer 4-1-9 which are sequentially stacked are sent into the spunlace area 4-3-4 for spunlace compounding; the water jet adopts a streamline shrinkage type water needle plate, the diameter of a big hole of the water needle plate is 0.6mm, the diameter of a small hole of the water needle plate is 0.08mm, and the hole distance is 0.4 mm; the water jet times are 4 times; the aperture ratio of the net supporting curtain is 50 percent, and the air permeability is 1000m³/m²·h，

(4) Thermal drying action

(a) Delivering the spunlaced and compounded sample into a thermal drying area 4-3-6, and drying by hot air penetration at 110 ℃ for 7 min; drying and forming under the action of temperature and air flow;

(b) then the relevant material is obtained through rolling 4-3-7.

The cross-sectional characteristics of the prepared fiber are shown in fig. 5;

example 2: the difference from the embodiment 1 is that a two-step preparation process is adopted, wherein the anti-slip layer, the high-fluffy fiber layer and the anti-slip layer are unwound from unwinding devices 5-1-1, 5-1-2 and 5-1-3 respectively, and the anti-slip layer, the high-fluffy fiber layer and the anti-slip layer are sequentially stacked in sequence, pass through a feeding roller 5-2-1 and then are conveyed to a spunlace area 5-3-1 for spunlace compounding.

The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be used, not restrictive; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.

Claims

1. The flexible anti-skid non-woven material with the light structure is characterized by comprising a high-fluffy fiber layer and anti-skid fiber layers arranged on the upper side and the lower side of the high-fluffy fiber layer, wherein three fiber nets are entangled under the action of water jet at 80-280 bar, and the anti-skid fiber layer on one layer is provided with concave-convex patterns; the high-loft fiber layer is formed by one or two fibers and has the surface density of 10-80 g/m²A fiber layer with a porosity of 80-90%; one of the fibers is one of polyethylene terephthalate fiber, polypropylene fiber, polylactic acid fiber, polyamide fiber, polyacrylonitrile fiber and polyurethane fiber, the fiber diameter is 14-28 μm, and the number of crimps is as follows: 15-20 pieces/25 cm, and the length is 38-65 mm; the other fiber is one of cotton fiber, viscose fiber, bamboo fiber and acetate fiber, the diameter of the fiber is 14-28 mu m, and the length of the fiber is 38-65 mm.

2. The flexible non-slip nonwoven material with a light weight structure as claimed in claim 1, wherein the dynamic friction coefficient of the non-slip fiber layer is 0.2 to 2.0 in the longitudinal direction and 0.3 to 2.1 in the transverse direction; the flexibility is measured as a resistance of 2.8 to 5.8cN by the Handle-O-Meter test method according to ASTM D2923-95.

3. The flexible non-woven material of claim 2, wherein the non-slip fiber layer is a filament fiber with a diameter of 13-25 μm, the cross section of the fiber is in a core-shift hollow form, the hollowness is 15-35%, the core-shift degree is 30-80%, and the surface density is 3-50 g/m²The porosity is 85-95%; the filament fiber is made by a hollow eccentric spun-bonding forming method which takes non-viscous high molecular material as raw material; the chemical composition of the non-sticky high polymer material is as follows: non-elastic thermoplastic high molecular polymer: 10-80 wt%; elastic thermoplastic high molecular polymer: 20-90 wt%; functional master batch: 0-5 wt%; 0-35 wt% of filler.

4. The flexible non-slip non-woven material with a light weight structure as claimed in claim 3, wherein the non-elastic thermoplastic polymer is one or a mixture of polypropylene, polyethylene and polylactic acid.

5. The flexible non-slip nonwoven material of light weight construction as claimed in claim 4 wherein said elastic thermoplastic polymer is: one of polyolefin elastomer, thermoplastic polyurethane, copolyester elastomer and polyamide polyether block thermoplastic elastomer.

6. The flexible anti-slip non-woven material with a light structure as claimed in claim 5, wherein the functional master batch is: one or more of color master batch, antistatic master batch, flame-retardant master batch, antibacterial master batch, soft master batch and hydrophilic master batch.

7. The flexible anti-slip non-woven material with the light structure as claimed in claim 6, wherein the filler is one or more of calcium carbonate, titanium dioxide, barium carbonate, fly ash, mica powder, kaolin, talcum powder and tourmaline, and the fineness is 600-3500 meshes.

8. The flexible antiskid non-woven material with a light structure as claimed in claim 7, wherein the water jet adopts a streamline shrinkage type water needle plate, the diameter of big holes of the water needle plate is 0.6mm, the diameter of small holes is 0.08mm, and the distance between the holes is 0.4-0.5 mm; the water jet times are 3-4; the adopted net supporting curtain has the aperture ratio of 30-60% and the air permeability of 850-1400 m³/m²·h。

9. The flexible anti-slip non-woven material with a light structure as claimed in claim 8, wherein the drying after the water jet punching is through-air drying, the temperature is 95-120 ℃, and the action time of the hot air is 5-10 min.