KR20100037792A - Retroreflective fabric - Google Patents

Abstract

PURPOSE: Retro-reflective fabric is provided to easily perform a manufacturing process by reflecting light on the both sides of the fabric with a glass bead reflector layer and an aluminum coating layer on the both surfaces of the fabric. CONSTITUTION: Retro-reflective fabric uses synthetic fiber yarns and split yarns with a minute glass bead reflector. The light emitted from a light source is returned to the light source after being reflected from the surface of an object. The synthetic fiber yarns are polyester draw texture yarns. An aluminum coating layer(22) is adhered to a polyethylene terephthalate film(10) by a polyurethanes glue layer(21). Te polyester draw texture yarns are used as warp yarns. The split yarns or split yarns and the polyester draw texture yarns are used as weft yarns.

Description

Retroreflective fabric

The present invention relates to a retroreflective fabric, and more particularly, to a retroreflective fabric as a functional material capable of providing decorativeness as an interior material of a vehicle and providing excellent visibility at night.

People who work at night, such as cleaners and construction workers, attach visible materials that reflect light to work clothes or hats to reflect safety from the vehicle's light source. Preventing accidents by making it easy to see objects in your eyes.

In recent years, the visible material reflecting light has been applied to a substrate by applying a fluorescent material or by attaching a special reflective material such as a fine glass bead or a micro prism so that the light from the light source is exposed to the surface of the object. This retroreflective visibility material can be used for road signs, billboards, guardrails, and vehicles for night-time car drivers. It is also used for other identification marks such as rear reflectors.

However, since the retroreflective material of such a structure is made of a sheet-like structure, there is a lack of fit as a garment, and above all, poor durability due to poor durability, and in particular, water laundering is almost impossible even if contaminated, and thus cannot be used for a long time. there was.

The present inventors pay attention to the special function of the conventional retroreflective material, excellent reflection effect and excellent durability, and furthermore, it is formed into a fabric so that it can be comfortably worn as clothing, and when applied as a vehicle interior material In addition to improving the internal design of the car, opening the door can be very useful in identifying the vehicle body, i.e. not finding a car parked on the shoulder at night, and preventing a car accident caused by a collision with the car ahead. The research was carried out to develop functional fabrics with excellent retroreflective effect.

As a result, it has excellent friction fastness and washing fastness, can be washed and used for a long time, so it has excellent durability, secures visibility by inherent retroreflective effect, and reflects uneven pattern by light reflection, and feel of metal Invented a retroreflective fabric with a special structure to provide a unique appearance and reflection effect.

That is, according to the present invention, in the retroreflective fabric that can be returned to the light source by reflecting the light from the light source from the surface of the object using a yarn made of synthetic fibers and a split yarn equipped with a fine glass bead reflector,

A tetravalent polyester draw textured yarn made of the synthetic fiber;

The split yarn is a glass bead reflector layer formed by bonding an aluminum coating layer on both sides of the polyethylene terephthalate film with a polyurethane adhesive layer, and a glass bead reflector adhered by a polyurethane adhesive layer on the aluminum coating layers. The laminated body formed is cut | disconnected and formed in the constant width;

The polyester drawotextile yarn is used as the warp yarn, or the split yarn alone or the split yarn and the polyester drawotextile yarn are used as the weft yarn so that the split yarn is woven so as to protrude regularly to the surface of the fabric.

To form a three-dimensional uneven pattern;

The front and back surfaces of the formed fabric are characterized by being configured to exhibit a retroreflective effect.

The polyester drawotextured yarn used as warp or warp and weft yarn in the present invention can be preferably applied because the color of the dope dyeing is clear and improves night visibility, and the polyester fiber is polyethylene tere Phthalates, polypropylene terephthalates, poly butylene terephthalates, or copolymers thereof or polyester fibers of these blends can be applied.

As described above, in the retroreflective fabric of the present invention, the split yarn, which is used as the weft yarn, is formed on both sides of the polyethylene polyethylene terephthalate film at the center of the aluminum coating layer and the glass bead reflector layer, respectively, via the polyurethane adhesive layer.

As a result, even when the weaved split yarn is twisted when the weaving yarn is turned upside down, it does not affect the reflection performance of the light and thus can be easily manufactured.

In addition, the width of the split yarn is different in size depending on the desired pattern, but usually about 0.2 ~ 0.5mm is preferred, if it is smaller than the lower limit is too thin, we have difficulty in weaving, if the upper limit exceeds the range, so the above range is appropriate Do. The glass bead reflector of the glass bead reflector layer constituting the split yarn is suitable for at least 130,000 pieces per square inch of the split yarn in terms of reflex reflection and luminance, and when the glass bead reflector is smaller than this, it is recursive. If the reflectivity is low and high, the manufacturing cost increases, so the above range is preferable.

The split yarns are woven to protrude regularly to the surface according to the pattern of the fabric, so that the protrusions form irregularities on the surface of the fabric to give a three-dimensional impression, and the protrusions reflect light to reflect the retroreflective effect. In addition to the visibility of the unique design.

DETAILED DESCRIPTION Hereinafter, the structural features of the retroreflective fabric according to the present invention will be described with reference to the accompanying drawings.

1 and 2 are photographs of real samples showing examples of retroreflective fabrics according to the present invention, and FIG. 3 shows the structure of the split yarn and the light reflection principle applied to FIGS. 1 and 2.

The retroreflective fabric according to the present invention is a woven fabric which is woven by mixing the split yarn (A) and the polyester drawo texture yarn (B) alone or as shown in FIG. In addition, it is possible to form a line pattern as illustrated in FIG. 2, but by varying the surface protruding length of the split yarn A applied as the weft yarn, a reflective pattern having a rhythm can be formed.

These split yarns (A), as shown in Figures 1 and 2 are woven so that a portion protrudes to the outside because of the protrusions to create a concave-convex pattern on the surface of the fabric to produce a three-dimensional atmosphere as a whole fabric, When part (A) receives light, it reflects light, which gives visibility to identify objects at night, and changes the color depending on the angle of reflection of light, forming a unique design.

The split yarn (A) is based on a polyethylene terephthalate film (10) in the center of the aluminum coating layer 12 on both sides of the polyethylene terephthalate film (10)

(22) are firmly adhered to each other by the polyurethane adhesive layers 11 and 21, and on each of the aluminum coating layers 12 and 22, polyurethane adhesive layers 13 and 23 are formed and they are solidified. Previously, a fine glass glass reflector was disposed on the polyurethane adhesive layers 13 and 23, and the laminate formed of the glass beads reflector layers 14 and 24 firmly fixed was cut into a narrow width of about 0.2 to 0.5 mm. It is formed by.

That is, the split yarn A is a glass bead reflector layer as shown in the cross-sectional view of FIG.

14, polyurethane adhesive layer 13, aluminum coating layer 12, polyurethane adhesive layer 11, polyethylene terephthalate film 10, polyurethane adhesive layer 21, aluminum coating layer

(22), the polyurethane adhesive layer 23, and the glass bead reflector layer 24 are laminated | stacked in order.

Therefore, the split yarn A reflects the light from the light source back to the light source as shown in the partial enlarged view of FIG. 3 by each of the two glass bead reflector layers 14 and 24, so that the split yarn A receives the light even at night. Make sure the location of objects is clearly identified.

The polyurethane adhesive layers 13 and 23 applied on the aluminum coating layers 12 and 22 are the same as those of the polyurethane adhesive layers 11 and 21 applied and formed on the polyethylene terephthalate film 10 substrate. In order to reflect the light of the coating layers 12 and 22, the coating must be transparent without color.

Accordingly, the retroreflective fabric according to the present invention reflects the light from the light source back to the light source after being incident on the glass bead reflector layers 14 and 24 as shown in FIG. 3, wherein the polyurethane adhesive layer 13 ( 23) The aluminum coating layers 12 and 22 provided below can further enhance the night visibility and visibility of the article by interacting with each other.

In particular, in the retroreflective fabric according to the present invention, the split yarn A used as the weft yarn has glass bead reflector layers 14 and 24 and aluminum coating layers 12 and 22 on both sides of the front and back. Even if the yarn (A) is turned upside down and the back surface is formed into the appearance of the fabric, it is possible to reliably exert a light reflection effect, thus facilitating the manufacturing process very easily.

Retroreflective fabric according to the present invention composed of the above structure is a glass bead reflector layer and aluminum coating layer that can reflect light at the same time with excellent visibility and visibility that can reflect the object by reflecting light during the day and night. Since both sides of the front and back reflect light, the fabric manufacturing process is easy and the unit cost can be reduced. Particularly, since split yarn is exposed to the surface of the fabric and regularly protrudes a certain length, it gives a feeling of metal. While creating three-dimensional irregularities, you can create a different atmosphere.

In addition, since the aluminum coating layer and the glass bead reflector layer constituting the split yarn are firmly attached to each other with the polyethylene terephthalate film base material through the polyurethane adhesive layers, they are integrally formed without being separated from each other in water washing. Washing fastness is excellent and economical.

Therefore, when the retroreflective fabric according to the present invention is installed as an interior material inside the door of the vehicle, the split gives a new aesthetic of a luxurious atmosphere different from the existing plastic or steel plate interior materials, as well as the split when the door is opened at night. Since the light is reflected by the driver, the driver of the rear vehicle can immediately identify the front vehicle by looking at the reflected light, thereby preventing contact accidents of the vehicle, which are likely to occur at night, and thus can be very useful in real life.

Retroreflective fabric according to the present invention made of a special structure as described above promotes safety at night by the visual effect of reflecting light, and the advertising and warning effect by the light reflection by forming the uneven pattern in an appropriate shape as needed You can get it.

In addition, when the post-treatment of the flame retardant processing and water-repellent processing, if necessary, the flame retardancy and water repellency can be given to meet the physical properties required as a vehicle interior material as well as clothing.

The retroreflective fabric according to the present invention will be described below with reference to one embodiment, but the present invention is not limited to this embodiment and can be appropriately modified and modified within the spirit and scope of the present invention.

EXAMPLE

Pre-colored polyester drawo texture yarn as black as warp

(DTY) 300/96 with black undiluted polyester drawo texture yarn as weft

(DTY) 450/144 and white split yarn were prepared, respectively.

The split yarn to be used as the weft yarn is based on a polyethylene terephthalate film, and forms an aluminum coating layer through a polyurethane adhesive layer applied to both sides, and then forms a transparent polyurethane adhesive layer on both top and bottom aluminum coating layers. Further, a glass bead reflector having a fine size was attached to 130,000 inches per square inch, and the glass bead reflector layer was laminated thereon, and the formed laminate was cut and formed to have a width of 0.37 mm.

Using the prepared warp and weft yarn as described above, the dough width was 57 inches, the warp density 21, and the weft density 70, and weaved dough so that the split yarns of the weaving regularly protruded over the surface by 15 ol in continuous wave form.

 Woven doughs had a black background, white split yarns protruding in the form of waves, showing a three-dimensional pattern that was visually pale gray, and gave a slightly cold texture like metal.

In addition, the formed dough was subjected to post-treatment of flame retardant processing and water repellent processing, so as to combine flame retardancy and water repellency.

The resulting dough was cut into 12 inches each, horizontally and vertically, and the visibility was measured. As a result, the angle of incidence (the angle between the retroreflective axis and the incident light) and the angle of observation (the angle between the incident light and the observer) were measured. Each was -4.0 ° / 0.2 ° and the retroreflective coefficient was 210, indicating high visibility.

In addition, the sample was exposed at 83 ° C. for 30 minutes, but the color change did not occur, and the initial luminance was maintained. The heat resistance was excellent, and the flame retardancy and water repellency were excellent.

1 is a photograph of a real swatch showing an example of a retroreflective fabric according to the present invention,

Figure 2 is a photograph of a real sample of the retroreflective fabric according to the present invention woven to have a different appearance pattern from Figure 1,

Figure 3 is a cross-sectional view showing the principle of the reflection of light through the structure of the split yarn and the glass bead reflector applied to Figures 1 and 2 above.

[Description of Symbols for Main Parts of Drawing]

A: Split Company

B: polyester drawo texture yarn

10: polyethylene terephthalate film

11.21, 13, 23: polyurethane adhesive layer

12, 22: aluminum coating layer

14, 24: glass bead reflector layer

Claims (3)

In the retroreflective fabric which uses light of synthetic fiber and split yarn with fine glass bead reflector, the light from the light source can be reflected on the surface of the object and back to the light source, The yarn made of the synthetic fiber is polyester drawotexture yarn (B); The split yarn (A) is bonded to both sides of the polyethylene terephthalate film 10, the aluminum coating layer 12, 22 by the polyurethane adhesive layer 11, 21, the aluminum coating layer ( 12) The fine glass bead reflector on the 22 is formed by being narrowly cut from the laminate provided with the glass bead reflector layers 14 and 24 bonded by the polyurethane adhesive layers 13 and 23. ; The polyester drawo texture yarn (B) is used as a slope, the split yarn (A) Single or the split yarn (A) and polyester drawotextile yarn (B) are used together as weft yarns, and the split yarn (A) is woven so as to protrude regularly onto the surface of the fabric to form a three-dimensional uneven pattern. Doing; Retroreflective fabric, characterized in that the front and back surfaces of the formed fabric is configured to exhibit a retroreflective effect. The width of the split yarn (A) is 0.3 to 0.5mm, the split yarn of claim 1 A retroreflective fabric, characterized in that 130,000 glass beads reflectors are adhered to (A) per square inch of split yarn. The retroreflective fabric according to claim 1 or 2, wherein the polyester drawotextile yarn (B) is a stock dyeing yarn.

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