JPH04126872A - Curtain - Google Patents

Abstract

PURPOSE:To obtain a fire retardant curtain in which a design is seen in openwork by subjecting cloth in which core-sheath structural yarn of polyester fiber comprising a specific component is used as weft to fire retardant and etching processing. CONSTITUTION:Yarn selected from regular polyester fiber and fire retardant polyester fiber is used in a core part and a normal pressure cation-dyeable polyester fiber is used in a sheath part, then core-sheath structural yarn composed of 15-50wt.% core part and 95-50 wt.% sheath part is used as weft to form cloth. Next, resultant cloth is subjected to fire retardant processing and textile printing color paste mixed with, e.g. caustic soda is printed on a designed pattern, then heat-treated, thus normal pressure cation-dyeable polyester is removed by dissolving and simultaneously subjected to dyeing and etching processing to afford the aimed opal-processed curtain.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a flame-retardant curtain with a transparent pattern.

<Prior Art> Curtains made of regular polyester fibers and normal pressure cation dyeable polyester fibers are known (Japanese Unexamined Patent Publication No. 63-59475). In other words, the above-mentioned publication describes ``a multilayered fabric consisting of two cationic dye-dyable polyester fibers inside and regular polyester fibers on both sides, the cationic dye-dyable polyester fibers being dyed black, and treated as a whole with a flame retardant. ``Flame-retardant polyester fabric for curtains'' characterized by being coated with.

On the other hand, a sizing agent containing an acid salt is printed on a fabric made of a core yarn and regular polyester fiber, whose core is regular polyester fiber and whose sheath is cotton or rayon fiber, or a mixed woven fabric of polyester fiber and cotton or rayon. Also known is an erosion process in which cotton or rayon is carbonized and removed by steam treatment.

<Problems to be Solved> Curtains made of a fabric made of core yarn and regular polyester fiber, in which the core is regular polyester fiber and the sheath is cotton or rayon fiber, and which has been subjected to an erosion process (opal treatment) have been put into practical use. However, a curtain made of a fabric made of core yarn and regular polyester fiber, in which the core is regular polyester fiber and the sheath is cotton or rayon fiber, and which has been subjected to flame-retardant and corrosion-retardant processing, has not been put to practical use. In other words, a curtain using core-sheath yarns that satisfies the flame retardant standards in the curtain field has not yet been obtained.

The present invention has been made to solve this problem. That is, the curtain is made by combining a core yarn using normal pressure cation dyeable polyester fiber as the sheath fiber and regular polyester fiber or flame-retardant polyester fiber in a specific ratio in place of the cotton or rayon fiber in the sheath part, and is subjected to an erosion process, This is a practical curtain that also has flame retardant properties.

<Structure of the Invention> In other words, the present invention provides a curtain comprising regular polyester fibers and normal pressure cation dyeable polyester fibers, in which the core portion is one or more selected from the group consisting of regular polyester fibers and flame-retardant polyester fibers, and the sheath portion is is a normal pressure cation dyeable polyester fiber with a core of 15~
50% by weight and 85 to 50% by weight in the sheath part of a fabric made of core-sheath structural yarn for at least the weft yarn, which has been subjected to flame retardant treatment and erosion treatment.''

Here, the regular polyester fibers are unmodified polyesters such as polyethylene terephthalate and polybutylene terephthalate. Flame-retardant polyester fibers are polyesters copolymerized or blended with phosphorus-based flame retardants, halogen-based flame retardants, nitrogen-based flame retardants, and the like. Atmospheric pressure cation dyeable polyester is a polyester that can be dyed with a cationic dye at atmospheric pressure, and includes, for example, polyethylene terephthalate copolymerized with sodium sulfoisophthalate.

The ratio of the core part to the sheath part of the core yarn is 15 to 50 in the core part.
It is necessary to determine the thickness of the core so that it falls within the range of %. If it is less than 15%, it will be difficult to form a core-sheath structure yarn, and the
%, the sheath portion cannot sufficiently cover the core portion. Further, it is preferable that the single yarn of the polyester fiber serving as the core portion is thicker than that of the normal pressure cation dyeable polyester fiber, since the difference in solubility will be larger and it will be easier to process with a solvent.

Flame retardant treatment can be done either before or after dissolving a part of the normal pressure cation dyeable polyester with alkali or acid.Flame retardant treatment methods include adding a flame retardant to the dye bath at the same time and exhausting it, or adding a flame retardant to the fabric. A method of immersing in a flame retardant bath and then heat setting is preferred.

The method for dissolving atmospheric pressure cation dyeable polyester fibers is to print a printing paste mixed with a strong alkali or strong acid on the pattern, heat it to react sufficiently at the same time as the color development process, and then repeat neutralization and washing. Dissolve it in a pattern. At this time, it is also possible to simultaneously dye the polyester fiber by using a dye in the sizing agent.

Caustic soda, caustic potash, etc. are used as the strong alkali. pH is 10 or more. Sulfuric acid is a strong acid.

Aluminum sulfate or the like is used, and the pH is 4 or less.

<Effects of the Invention> (1) It is possible to obtain a flame-retardant opal coated curtain that has washing durability, which has been considered difficult in the past.

(2) By using core yarn, the strength of the yarn does not decrease compared to blended yarns or twisted yarns, and the edge of the pattern becomes beautiful. Also, when dyeing, the remaining core yarn is the normal pressure cation dyeable polyester of the sheath. Since it is only made of polyester, it can be dyed in bright colors without mixing with polyester.

<Example> Hereinafter, the present invention will be specifically explained with reference to Examples.

Example 1 Woolly processed polyester yarn 50d/24fil was used as the core yarn and normal pressure cation dyeable polyester 1.5ax5
A core yarn of 30/- was made by winding 1 mm into a sheath.

A plain weave fabric was created using 70 yarns/inch of this core yarn in the warp and 80 yarns/inch in the weft, and after this fabric was scoured and set, 18% OWF of an aqueous dispersion of hexabromocyclododecane, a flame retardant, was added. Put it in the liquid jet dyeing machine, 1
It was treated at 20°C for 40 minutes to impart flame retardant properties.

After printing the pattern with a glue mixed with caustic soda, 1
It was placed in a steamer at 80 DEG C. and set for 20 minutes, neutralized with acid, and then washed repeatedly with water to dissolve and remove the normal pressure cation dyeable polyester to obtain an opal-treated curtain.

The edges of the printed pattern of the resulting curtain were clearly cut through, and the flame retardant performance passed the durable flame retardant standards for curtains stipulated by the Fire Service Act, as shown in the table below.

Comparative Example A 30/- core yarn was prepared by using polyester filament yarn 75d/36fil as a core yarn and wrapping a cloth around it to form a sheath portion. This core yarn is used as warp yarn at 70 threads/inch.
A plain weave fabric using 80 wefts/inch was prepared, and after being scoured and set, it was subjected to flame retardant treatment under the same conditions as in Example 1 to impart flame retardant performance.

After printing a pattern on this fabric with a glue mixed with sulfuric acid,
The curtain was placed in a steamer at 80 DEG C. for 20 minutes, neutralized with an alkali starting from C, and then washed with water repeatedly to thoroughly remove the cotton to obtain an opal-treated curtain.

The resulting curtain failed in flame retardant performance as shown in the table below.

Claims (1)

[Claims] In a curtain made of regular polyester fibers and normal pressure cation dyeable polyester fibers, the core part is one or more selected from the group consisting of regular polyester fibers and flame-retardant polyester fibers, and the sheath part is normal pressure cation dyeable polyester fibers. A curtain made by subjecting a fabric to flame retardant processing and erosion processing to a fabric in which at least the weft yarn is made of a core-sheath structural yarn having a core portion of 15 to 50% by weight and a sheath portion of 85 to 50% by weight.