TW201723260A - Vertical cotton and preparation method thereof having applications to filtration, heat insulation, and sound absorption - Google Patents

Abstract

The invention is one type of vertical cotton and a preparation method thereof. Utilize and blend at least two types of fibers that are characterized by elasticity and self-crimp respectively. After blending and by opening equipment, open every fiber into a continuous fiber web, upon which are three-dimensional and spiral low-melting-point staple fibers disposed. After that, use cotton folding equipment to fold the fiber web into a continuous stacked state, forming several parallel and abutted vertical cotton units. Going with the aforementioned process, heat to fuse, tangle, and cure the at least two types of fibers in the fiber web to form a fibrous cotton layer; and fuse three-dimensional and spiral low-melting-point staple fibers; tightly bond binding surfaces of the adjacent vertical cotton units, forming a vertical cotton, having stable elasticity, being possible to be cut according to demanded thickness, replacing the existing foam pad, and having applications to filtration, heat insulation, and sound absorption.

Description

Erect cotton and preparation method thereof

The invention relates to a fiber cotton, in particular to an erect cotton with good elasticity and recovery property and a preparation method thereof.

Fluffy materials are essential for human social life and are closely related to people's lives. For example, sound-absorbing materials, sofas, mattresses, office chairs, sports equipment, clothing, etc. need to use fluffy materials. According to the preparation method of fluffy materials, there are usually sponges and There are three types of spacer fabrics and three-dimensional elastic woven fabrics.

Sponge is a kind of porous material, mainly made of soft foam in polyurethane foam. Due to the low price of sponge, light weight, soft and full hand feeling and good resilience, it is dominant in the market, but sponge production pollution, waste can not be Fatal shortcomings such as recycling, and easy to yellow, poor ventilation and comfort. As people pay more and more attention to the concept of low-carbon environmental protection, the development of fluffy materials with excellent performance has gradually become the focus of scholars at home and abroad.

The three-dimensional warp-knitted spacer fabric refers to the raschel warp-knitted three-dimensional knitted fabric which is connected by two spacers and is separated by a spacer yarn. The remarkable advantages are: the production process is environmentally friendly and pollution-free, and can be recycled and recycled, with good fastness and heat. Wet comfort, warmth and breathability are good, soft and elastic, overcoming the shortcomings of sponges, but due to its structural characteristics, compression and resilience are poor, the current application range is limited, especially the requirements for compression elasticity are not met. The product.

Three-dimensional elastic woven fabrics are developed on the basis of warp-knitted fabrics. The utility model relates to a novel fluffy material which has good resilience in the thickness direction, stable structure, variable shape, good integrity, good moisture permeability and gas permeability. However, its woven structure is complicated, the manufacturing cost is high, and it is difficult to popularize the application.

Therefore, the author has previously created the invention patent No. I290594 “Upright Honeycomb Cotton and Its Preparation Method”, which uses high shrinkage polyester fiber and elastic low melting polyester fiber (Low Melting PET). After the cotton is opened by the cotton-opening equipment, it is combed into a sheet-like fiber web through the carding device, and after folding the cotton fabric, the fiber web is folded into an upright nine-degree continuous stacked state fiber cotton net, and then passed through an oven. Hot air baking causes the high-shrinkage polyester fiber to be curled when it is heated, and is fused with elastic low-melting polyester fiber (Low Melting PET) to form a combination of entanglement and shrinkage, so that the fibers of the layer-to-layer fiber web are entangled and contracted together like a honeycomb. . However, the super-shrinkable polyester fiber of the erect cotton is superposed on the heat to cause curling, and is fused with the elastic low-melting polyester fiber (Low Melting PET), and the entanglement and shrinkage are combined with each other, so the bonding force is insufficient. Dispersion is easily generated between the bonding faces, and the elasticity between the bonding faces is poor.

Later, there is also a Chinese patent publication No. CN 104805600 "a bionic honeycomb cotton and a manufacturing method thereof", which is mainly provided with equidistant and side by side filaments on the front and back surfaces of the erect cotton units of the honeycomb cotton, and is baked. When dry, the filaments are melted, so that the erected cotton units can be tightly bonded. However, the characteristics of the filaments are two-dimensional, so the bonding strength of each of the upright cotton units is still insufficient, and it is impossible to fully combine, and the elasticity between the joint faces cannot be provided.

The present inventors have in view of the fact that the erect cotton has the disadvantage that the overlapping bonding faces cannot be completely combined, and the elasticity between the bonding faces cannot be provided, and the idea of creating and testing the sample, and the multiple corrections After the improvement, the present invention is finally introduced.

The invention provides an upright cotton and a preparation method thereof, which are mixed by using at least two kinds of fibers, one of which is a low-melting polyester fiber (Low Melting PET), and the other is a self-crimping property (Self Crimp). Ester fiber, different from the melting point of the two polyester fibers, and other fibers, such as natural cotton, recycled old clothing, waste textile, old carpet, recycled cotton, etc., are mixed according to the purpose of use. The fiber is opened and sent to the carding device to spread a mixture of all the fibers into a continuous fiber web, and a three-dimensional spiral low-melting polyester staple fiber is disposed above the fiber web, and sent to a cotton folding device for folding cotton. The fiber web is arranged in an upright continuous state to form a plurality of erected cotton units, and adjacent erected cotton units respectively have a joint surface, and the three-dimensional spiral low-melting polyester staple fibers are interposed between adjacent straight cotton units. In combination with the above process, the heating action is performed to fuse the two or more fibers of the fiber web into a fiber cotton layer, and the three-dimensional screw The molten low melting point polyester staple fibers, the bonding surface closely adjacent the vertical section of cotton, cotton forming the upright.

The main object of the present invention is to provide an upright cotton which has good elasticity and recovery, can be cut according to the thickness requirement of use, and the joint surface of each upright cotton unit is a three-dimensional combination of three-dimensional space, which can not only fully combine Moreover, the characteristics of the three-dimensional spiral low-melting polyester staple fiber can be utilized to increase the elasticity between the bonding faces.

1‧‧‧Fiber

10‧‧‧Fiber cotton layer

10A‧‧‧Upright cotton unit

11‧‧‧ polyester fiber

12‧‧‧Flexible low melting point polyester fiber

13‧‧‧Three-dimensional spiral low-melting polyester staple fiber

20‧‧‧ erect cotton

A‧‧‧ conveyor belt

B‧‧‧ conveyor belt

C‧‧‧ conveyor belt

D‧‧‧ conveyor belt

The first figure is a schematic representation of the present invention in which at least two fibers are mixed to form a continuous web.

The second figure is a schematic view of a fiber cotton layer formed by heating the fiber web of the present invention.

The third figure is a schematic diagram of the present invention in which a three-dimensional spiral low-melting polyester staple fiber is disposed on a fiber web and folded to form an upright continuous stacked state.

The fourth figure is a schematic diagram of the fusion bonding of the three-dimensional spiral low-melting polyester staple fibers between the joint faces of the adjacent upright cotton units of the present invention.

The fifth drawing is a schematic view of the folding molding of the present invention.

Please refer to the first figure, the second figure, the third figure and the fourth figure. The preparation method of the erect cotton of the present invention comprises the following steps:

(a) mixing with at least two fibers, one of which is a low-melting polyester fiber (Low Melting PET) 12, and the other is a polyester fiber 11 having a self-crimping property (Self Crimp), which is combined with two basic materials. Polyester fiber, the fiber added separately is configured according to the purpose of use, such as natural cotton, recycled old clothing, waste textile material, old carpet, recycled cotton, etc., depending on the flexibility of use, mixing two different basic proportions The material wherein the elastic low melting point polyester fiber (Low Melting PET) 12 can be from 10 to 70%, the other Self Crimp polyester fiber 11 can be from 10 to 70%, and the other fibrous bodies can be from 5 to 40%, after all mixing. All the fibers are opened by the opening device and fed to the carding device to spread the mixture of all the fibers into a continuous web 1 to be evenly distributed.

(b) a three-dimensional spiral low-melting polyester staple fiber 13 is disposed above the fiber web 1, and the three-dimensional spiral low-melting polyester staple fiber 13 is disposed in a uniform manner, and then the web is fed to the fabric. The cotton device performs the twisting and twisting action of the cotton web 1 so that the fiber web 1 is in an upright continuous stacked state, and a plurality of upright cotton units 10A are formed, and the adjacent upright cotton units 10A respectively have a joint surface, and the three-dimensional spiral shape The low-melting polyester staple fibers 13 are interposed between the joining faces of the adjacent upright cotton units 10A.

(c) performing the heating operation in the above steps to make the two types of the fiber web 1 The upper fiber is fused and entangled and solidified into a fiber cotton layer 10, and the three-dimensional spiral low-melting polyester short fiber 13 is melted, and the joint faces of the adjacent erected cotton units 10A are tightly combined to form a honeycomb structure having a cross section. Upright cotton 20.

When the heating operation is in the step (b), the fiber web 1 is first sent to an oven to be subjected to a hot air blowing treatment to cause the heat-curled polyester fiber 11 to be curled. The polyester fiber 11 is at a different temperature. The higher the temperature, the higher the degree of curling, until the fiber is crimped to a limit, the degree of curling will cause different changes in the erect cotton elasticity, the crimped polyester fiber 11 and the elastic upright low melting polyester fiber. 12 welding and tangling and solidifying to form a fiber cotton layer 10, and after the step (b), the three-dimensional spiral low-melting polyester staple fiber 13 is melt-bonded by far-infrared heating, and the bonding surface of the adjacent erect cotton unit 10A is tightly bonded. And to increase the flexibility between the joint surfaces.

Alternatively, the heating operation may be carried out at the end of the step (b), and the fiber web 1 is sent to the oven together with the three-dimensional spiral low-melting polyester staple fiber 13 to be subjected to a hot air blowing treatment to promote the heat-curled polyester fiber 11 Curing occurs, the polyester fiber 11 is at different temperatures, the higher the temperature, the higher the degree of curling, until the fiber is crimped to a limit, and the degree of curling causes the erect cotton elasticity to be varied differently. The crimped polyester fiber 11 is entangled and solidified by the elastic upright low-melting polyester fiber 12 to form a fiber cotton layer 10, and the three-dimensional spiral low-melting polyester staple fiber 13 is melt-bonded, and the adjacent upright cotton unit 10A The bonding faces are tightly combined to increase the elasticity between the bonding faces.

The erected cotton 20 is an independent high-elastic body with uniform elasticity, good gas permeability, good plasticity, recovery and quite good environmental protection function. The fiber waste generated in the whole manufacturing process can be reused again. In the aforementioned process, there is no problem of waste at all. No chemical is added to the entire process, and no chemical contamination occurs.

In addition, in the present invention, a three-dimensional spiral low-melting polyester staple fiber 13 is disposed above the fiber web 1 or the fiber cotton layer 10, and the fiber web 1 or the fiber cotton layer 10 is subjected to a cotton folding operation to obtain a fiber web 1 or a fiber cotton layer. 10 is in an upright continuous stacked state, as shown in the fifth figure, the web 1 or the fiber cotton layer 10 is laterally conveyed to the lower longitudinal conveyor belt D via the transverse conveyor belts A, B, C, the conveying The belt D is transported longitudinally, while the conveyor belts B, C are swung back and forth together, and then conveyed to the lower conveyor belt D of the fiber web 1 or the fiber cotton layer 10 via the aforementioned conveyor belts A, B, C. , that is, by the lateral sway of the conveyor belts B, C and the longitudinal conveyance of the conveyor belt A, forming a longitudinal and lateral folding state as shown, and when the fiber web 1 or the fiber cotton layer 10 passes through the conveyor belt C, A three-dimensional spiral low-melting polyester staple fiber 13 is sprinkled over the fiber web 1 or the fiber cotton layer 10.

The invention can be cut at different thicknesses according to the needs of use, and can be applied to various articles requiring elastic bodies, such as cups, seat cushions, seat backs, insoles, mattresses, anti-collision protection materials instead of existing foams, or The honeycomb structure is used as a sound absorbing material, and a heat insulating pad, etc.; the erect cotton can be used as a filter material, and the material to be filtered is uniformly dispersed and absorbed in the erect cotton.

In accordance with a preferred embodiment of the present invention, the three-dimensional helical low-melting polyester staple fiber 13 used has a length of from 1 to 15 mm.

The upright cotton of the present invention mainly comprises: a fibrous cotton layer 10 which is vertically stacked and has a plurality of erected cotton units 10A which are adjacent to each other, and adjacent erected cotton units 10A respectively have a joint surface.

A plurality of three-dimensional spiral low-melting polyester staple fibers 13 are disposed between the joint faces of adjacent upright cotton units 10A, and the three-dimensional spiral low-melting polyester staple fibers 13 are disposed in a uniform manner to an oven or far infrared rays. Heating to make a three-dimensional spiral low-melting polyester staple fiber 13 The fused bond is used to tightly bond the joint faces of the adjacent erected cotton units 10A to form the erected cotton 20 having a honeycomb structure in cross section.

According to the structure of the above specific embodiment, the following benefits can be obtained: the erect cotton of the present invention and the preparation method thereof, the erect cotton 20 has good elasticity and recovery, can be cut according to the thickness requirement of use, and each upright cotton unit The combination of 10A is a three-dimensional combination of three-dimensional space, which not only can be completely combined, but also can utilize the characteristics of the three-dimensional spiral low-melting polyester staple fiber 13 to increase the elasticity between the bonding surfaces, thereby achieving the practical improvement effect.

10A‧‧‧Upright cotton unit

13‧‧‧Three-dimensional spiral low-melting polyester staple fiber

20‧‧‧ erect cotton

Claims (9)

The invention relates to a method for preparing erect cotton, comprising the following steps: (a) mixing at least two kinds of fibers, respectively having the characteristics of elasticity and self-curling. After mixing, all the fibers are opened by a cotton opening device, and sent to a carding device to process the fibers. Forming a continuous fiber web; (b) laying a three-dimensional spiral low-melting polyester staple fiber above the fiber web, and sending it to the cotton folding device for folding cotton, so that the fiber web is in an upright continuous stacked state, forming a plurality of An upright cotton unit, the adjacent upright cotton units respectively have a joint surface, and a three-dimensional spiral low-melting polyester staple fiber spacer is interposed between the joint faces of the adjacent upright cotton units; (c) heating in the above step Acting, the two or more fibers of the fiber web are fused, entangled and solidified into a fiber cotton layer, and the three-dimensional spiral low-melting polyester staple fiber is melted, and the joint faces of the adjacent erect cotton units are tightly combined to form an upright stand. cotton. The method for preparing an upright cotton according to claim 1, wherein the heating operation is carried out in the step (b), the fiber web is first sent to an oven to be subjected to a hot air blowing treatment, and two or more kinds of fibers are fused and entangled and solidified. A fiber cotton layer, and after the step (b), the three-dimensional spiral low-melting polyester staple fiber is melted by far-infrared heating, and the bonding faces of the adjacent erect cotton units are tightly bonded. The method for preparing an upright cotton according to claim 1, wherein the heating operation is performed at the end of the step (b), and the fiber web is sent to the oven together with the three-dimensional spiral low-melting polyester staple fiber to be subjected to pressure hot air blowing treatment. The two or more fibers are fused, entangled and solidified to form a fiber cotton layer, and the three-dimensional spiral low-melting polyester short fibers are melted, and the joint faces of the adjacent erected cotton units are tightly combined. The method for preparing an upright cotton according to claim 1, wherein one of the at least two fibers is a low melting point polyester fiber (Low Melting PET), and the ratio of the low melting point polyester fiber (Low Melting PET) is It can be from 10 to 70%. The method for preparing an upright cotton according to claim 1, wherein one of the at least two fibers is a self-crimping (Self Crimp) polyester fiber, and the self-crimping polyester fiber (Self Crimp) content ratio may be from 10 to 70%. . The method for preparing an upright cotton according to claim 1, wherein the at least two fibers can be added with natural cotton, recycled old clothes, waste textile materials, old carpets, recycled cotton and other fibers in combination with elastic requirements, and the other fibers are contained. The ratio can be from 5 to 40%. The method for preparing an upright cotton according to the first aspect of the invention, wherein the three-dimensional spiral low-melting polyester staple fiber has a length of 1 to 15 mm. An upright cotton mainly comprising: a fiber cotton layer which is vertically stacked continuously, has a plurality of erected cotton units, and adjacent erected cotton units respectively have a joint surface; and a plurality of three-dimensional spirals The low-melting polyester staple fibers are fused and bonded at intervals between the joint faces of adjacent upright cotton units. The erect cotton according to Item 8 of the patent application, wherein the three-dimensional spiral low-melting polyester staple fiber is disposed in a uniform manner.