JPS5854067A - Mirror surfaced fiber structure and production thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a mirror-surfaced fiber structure with durable gloss performance and a method for producing the same.

Conventionally, methods for imparting gloss to fiber structures include applying wax or paraffin to the surface of the fiber structure and applying it with a hot roll, applying polyethylene glycol and brushing it, or coating the surface with a silicone resin and then applying There is a chart on how to apply it to a hot mouth.

All of these have a separate resinous material coating provided on the surface of the fiber structure, and moreover, there is a problem in the adhesion between the two. In other words, we value adhesion.

For example, the application of reactive resinous materials results in the formation of structures that are significantly less flexible, while the application of other resinous materials results in the formation of non-durable coatings. The reality is that products are being made into tS products at the expense of quality. Furthermore, these resin coatings have a common drawback of lack of air permeability.

In view of these conventional drawbacks, the present invention provides a fiber structure with a specular surface that has extremely durable gloss performance and also has air permeability and flexibility.Furthermore, the fiber structure according to the present invention Even when applied to, for example, a fiber structure with a rough surface and a thick wall, it can exhibit excellent gloss without being limited by the type or shape of the structure.

It also has the characteristic that its gloss does not disappear due to surface friction or handling.

The present invention has the following configuration. In other words, it is a short fiber structure made of one synthetic fiber, and a mirror surface fiber structure having a mirror surface made of at least the outermost fiber part of the convex portion on the surface of the fiber structure. It is manufactured by first applying a dissolving agent for the synthetic fibers constituting the fiber structure to the surface thereof, and then heating and pressing the surface.

The synthetic fiber referred to in the present invention is 9 ordinary polyamide.

It is a general term for fiber-forming polymers such as polyester, polyacrylonitrile, or copolymers of these, and also includes mixtures of cellulose fibers, animal fibers, etc.

The present invention applies fiber structures composed of short fiber yarns made of such synthetic fibers, and includes, for example, knitted fabrics or woven fabrics, braided fabrics, and strings used for clothing or industrial purposes.

The fiber structure of the present invention has a mirror surface on its surface, and is characterized in that the mirror surface is formed by at least the outermost fiber portion of the convex portion on the surface of the structure.

That is, the mirror surface object of the present invention is formed from the synthetic fiber polymer that constitutes the structure.

A glossy surface formed by partially melting, melting, or deforming the fibers on the convex portions of the surface of the structure, and this glossy surface is the surface portion (fuzz) of the convex fiber group in the outermost layer of the surface portion. ) are integrated in a film or press-bonded form and have a structure that is approximately planar. Here, the film refers to a coating formed by dissolving and melting at least the fiber portion of the outermost layer, that is, the fuzz portion of the convex fiber group, and furthermore, a coating formed by partially dissolving and melting the convex fibers themselves. say. The mirror surface of the present invention is formed by deforming the convex portions on the surface of the structure, and the structure is deformed to such an extent that the texture of the structure, such as woven or knitted tissue, can be distinguished. A formed one is preferable from the viewpoint of flexibility. The more the structure is indistinguishable, that is, the more the structure has a mirror-like structure in which the entire surface including not only the convex portions but also the concave portions is deformed, the glossiness is excellent, but the flexibility is poor.

The specular surface fiber structure of the present invention has a specular surface made of a fiber polymer that makes up the entire fiber structure, and has extremely high durability and excellent shape retention against friction and kneading effects. , and does not cause a decrease in gloss. Furthermore, the structure of the present invention is one in which the tissue is not destroyed,
The woven structure, knitted structure, and braided structure are held together to the extent that they produce a three-dimensional pattern effect, so they are extremely flexible.

It also has the characteristics of excellent breathability.

In addition, if the structure is a dyed product, the dyeability will not be impaired and the mirror surface will have the same hue and shine.
It has the advantage of being able to provide extremely interesting structures.

Such a structure of the present invention is manufactured as follows.

5- First, a dissolving agent for the synthetic fibers constituting the structure is applied to the surface of the structure, particularly to the convex portions.

Such solubilizers include, for example, formic acid for nylon;
Known fiber dissolving agents include phenols, alkalis such as sodium hydroxide for polyester fibers, and ethylene carbonate and dimethyl sulfonate for polyacrylic fibers.

By applying such a fiber dissolving agent, the surface of the short fiber yarn structure, particularly the surface layer fibers constituting the convex portions and/or the fluff group of the surface layer, is dissolved or semi-dissolved (including swelling), This makes it easier to form a mirror surface by suppressing heating later. Note that the object of the present invention can be achieved even if the fluff is completely dissolved and removed and the surface layer fibers of the structure are further dissolved (semi-dissolved).

If the melted portion extends not only to the convex portions but also to the concave portions of the structure, there is a risk that the entire surface will become mirror-finished, and if the entire surface is mirror-finished, the flexibility will be significantly reduced. Such fully mirror-finished products are subject to restrictions in terms of application.

Methods for applying such fiber-dissolving agents include dipping and padding.

Can be applied by spray or other methods. 6- The concentration of the fiber dissolving agent varies depending on the type of solubilizing agent, the application method, etc.
It may be selected as appropriate depending on the desired texture. For example, when applying ethylene carbonate as a dissolving agent to a knitted fabric made of acrylic fiber spun yarn by spraying,
It is best applied as a 5-70% solution, preferably a 10-50% solution. If a solution with a concentration lower than 5.5% is applied, the gloss tends to disappear due to friction or rubbing action. If the concentration of the solution exceeds 70%, the texture of the fabric will become extremely hard, which is undesirable. In addition to the fiber dissolving agent, other agents such as a smoothing agent or a softening agent may also be used in combination. especially,
Do you use smoothing agents or fabric softeners?

The specular surface material simultaneously improves the texture of the fiber structure and further increases its resistance to friction or rubbing action.

After applying a fiber solubilizer to the fiber structure.

Dry, heat and press if necessary. The method of heating and pressing may be by pressing with a hot plate or continuously with a hot roll. At this time, the heating temperature and pressing force vary depending on the type of fiber, the form of the fiber structure, and the degree of surface mirror finish required, but in general, the higher the heating temperature, the better the surface mirror finish effect. The harder the joint is, and the higher the pressing force is, the greater the effect of making the back surface mirror-finished. However, since the fiber structure becomes flat, the desired balance between the surface mirror-finishing effect and texture should be selected.

Next, examples of the method of the present invention will be shown.

Note that the rubbing resistance in the examples was tested using the first method. A mirror-finished fiber structure and the same type of untreated fiber structure were tested using a Gakushin friction tester.

After 100 reciprocating friction runs under a load of 500 g, the friction surface of the surface-mirrored fibrous structure was observed and judged using a gray scale discoloration standard plate as a standard.

Example 1 A three-strand braid made of acrylic spun yarn was dyed and dried, and then sprayed with a 30% dimethyl sulfonate solution. The adhesion rate of this solution was 25%. Subsequently, calender processing was performed at a roll surface humidity of 150° C. and a pressing force of 20 kg/an.

For comparison, only calendering was carried out under the same conditions without spraying the dimethylsulfonate solution.

As a result of visual observation of the mirror-finishing effect of both products, the product processed by the method of the present invention was 9.9% higher than the comparative product. It was even better. Also,
The results of the rubbing resistance test are shown in Table 1.

Table 1 Example 2 A jersey made of spun polyester fibers was dyed in a conventional manner and sprayed with a 30 g/l solution of IJum (hydroxide). The adhesion rate of the solution was 40%.

Subsequently, it was dried at 100°C, and the roll humidity was 180°C.

Calendering was carried out at a pressure of 66 kg/an.

For comparison, only calendering was performed under the same conditions without spraying with sodium hydroxide solution.

=9- As a result of comparing the mirror-finishing effect of both by visual observation, the processed product by the method of the present invention was found to be superior to the comparative product.

It was excellent with remarkable gloss. Table 2 shows a comparison of the rubbing resistance.

Table 2 Example 6 Three strands of polyacrylic spun yarn of No. 10 were twisted, and 1. Using 5 yarn bundles made by aligning 3 of these twisted yarns, 1
A braid with a width of about 2 an and a thickness of about 3.5 mm was manufactured,
Stained. This braid was treated with N,N-dimethylformimald under various conditions. The treatment conditions and treatment effects are shown in Table 6, and the effect of the method of the present invention is remarkable.

In other words, the result of observing the braid treated in A with a magnifying glass is 9
Most of the fluff was short-circuited or melted, and in the braid treated with B10-, one fluff was melted and at the same time, some fusion between the short fibers constituting No. 10 was observed. In addition, in the braid treated with C, the fusion between the short fibers was further advanced. The braid treated in D had a film-like appearance due to the short fibers in the surface layer that were directly applied to the nip rollers being fused together.

As mentioned above, by changing the concentration of N,N-dimethylformamide, the nip pressure, and the heating temperature, the degree of mirror polishing on the surface of one braid changes, and as a result, the thickness and flexibility change. A product with excellent rubbing resistance and gloss was also obtained.

On the other hand, in Comparative Example F, the surface of one braid is pressed and a temporary mirror effect is observed, but fluffing occurs due to manipulation and the gloss effect is reduced. It should be noted that the amounts of adhesion in the present Examples and Comparative Examples were all kept constant based on the weight of the pick-up roller 110.

Claims (2)

[Claims] (1) A surface specular fiber structure which is a short fiber structure made of synthetic fibers and has a specular body made of at least the outermost fiber portion of the convex portion on the surface of the fiber structure. (2) A method for producing a surface mirrored fiber structure, which comprises applying a synthetic fiber dissolving agent to the surface of a short fiber structure made of synthetic fibers, and then heating and pressing the surface.