阅读说明：本技术 一种反光膜及其制备方法 (Reflective film and preparation method thereof ) 是由 范春平 陆楞渊 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种反光膜及其制备方法,反光膜包括基层,所述基层的上表面从上至下依次设有保护面层、玻璃微珠层和反光铝箔层,所述基层的下表面上至下依次设有黏胶层和黏胶防护层,所述玻璃微珠层内还封装有LED芯片。本发明以尼龙面料为基础,使得制备的反光膜结构强度高,抗拉、耐撕裂,使用寿命长,通过在尼龙面料预涂底胶,有利于使得真空镀铝薄膜平整光洁,提高真空镀铝薄膜的牢靠程度,反光效果好,不易脱落,通过在玻璃微珠层中同时植入玻璃微珠和LED芯片,不仅能够对光线进行反射,还能够使得反光膜在接通电源后进行自发光,提高反光膜的警示效果。(The invention discloses a reflective membrane and a preparation method thereof, wherein the reflective membrane comprises a base layer, the upper surface of the base layer is sequentially provided with a protective surface layer, a glass bead layer and a reflective aluminum foil layer from top to bottom, the lower surface of the base layer is sequentially provided with an adhesive layer and an adhesive protective layer from top to bottom, and an LED chip is further packaged in the glass bead layer. The invention is based on nylon fabric, so that the prepared reflective film has high structural strength, tensile strength, tear resistance and long service life, the primer is precoated on the nylon fabric, the vacuum aluminized film is smooth and clean, the firmness of the vacuum aluminized film is improved, the reflective effect is good, and the reflective film is not easy to fall off.)

1. A retroreflective sheeting comprising a base layer (4), characterized in that: the upper surface of basic unit (4) is from last to being equipped with protection surface course (1), glass bead layer (2) and reflection of light aluminium foil layer (3) down in proper order, the lower surface of basic unit (4) is gone up to being equipped with viscose layer (5) and viscose inoxidizing coating (6) down in proper order, still be packaged with LED chip (7) in glass bead layer (2).

2. A retroreflective sheeting according to claim 1, wherein: the glass bead layer (2) comprises a resin base layer (202) and glass beads (201) uniformly distributed in the resin base layer (202), and the particle size of the glass beads (201) is 0.1-0.15 mm.

3. a retroreflective sheeting according to claim 1, wherein: and the lead-out wires of the LED chip (7) are vertical to the extending direction of the reflective film.

4. A retroreflective sheeting according to claim 1, wherein: the protective surface layer (1) is a PET film, and the thickness of the protective surface layer (1) is 0.05-0.1 mm.

5. A retroreflective sheeting according to claim 1, wherein: the base layer (4) is formed by cutting a nylon fabric with the thickness of 0.2-0.3 mm.

6. a retroreflective sheeting according to claim 1, wherein: the adhesive protective layer (6) is formed by cutting a PVC film with the thickness of 0.05-0.1mm, and the adhesive layer (5) is 0.06-0.08 mm.

7. A method for producing a retroreflective sheeting according to any one of claims 1-6, comprising: the method comprises the following operation steps:

s1: pretreating the base layer (4), uniformly coating a layer of K-500 primer on the base layer (4), wherein the thickness of the coating is 2-4um, drying for 10-15 minutes in a drying channel with the temperature of 23-25 ℃ and the humidity of 63-66% after coating, and waiting for the coating to be dried;

S2: vacuum aluminizing, namely inputting an aluminum wire with the diameter of 2mm into an evaporation boat at the speed of 0.4-0.8m/min under the condition of 2-8Pa vacuum degree to heat and evaporate the aluminum wire, so that aluminum atoms are condensed on a primer layer, the winding speed of a base layer (4) is 120-180m/s, and a reflective aluminum foil layer (3) with the thickness of 400-600A is formed on the primer layer;

S3: implanting glass beads (201) and LED chips (7), coating resin with the thickness being the same as the diameter of the glass beads (201) on the reflective aluminum foil layer (3), then implanting the glass beads (201) into the resin, reserving installation gaps of the LED chips (7), outputting the base layer (4) with the implanted glass beads (201) to the next station, and implanting the LED chips (7) into the reserved installation gaps;

s4: laminating, namely implanting glass beads (201) and LED chips (7) into a resin base layer (202) and then outputting, laminating a PET film on the surface of a glass bead layer (2) through a compound machine to serve as a protective surface layer (1), inputting the laminated film into an oven with the temperature of 46-50 ℃ and the humidity of 24-28% for drying treatment for 3-5 hours, and rolling the dried product into a sectional material;

S5: and gluing, namely unreeling the section, coating a layer of polyurethane glue on the back surface of the base layer (4), and compounding a layer of PVC film on the glue layer to protect the glue layer (5).

Technical Field

the invention belongs to the technical field of reflective films, and particularly relates to a reflective film and a preparation method thereof.

Background

The reflective film is a directly applicable retroreflective material, which is a film manufactured by using a glass bead technique, a microprism technique, a synthetic resin technique, a thin film technique, a coating technique and a microreplication technique. The reflective film is widely applied to road traffic safety. The existing reflective film gives out warning for reflecting incident light according to the action principle, and due to the adoption of the light reflection principle, the reflective film is difficult to reflect the reflected light to a light source after the light incident angle is greater than 45 degrees, does not have the self-luminous function, is not favorable for timely finding the front obstacle under the dark condition, and has greatly reduced warning effect.

disclosure of Invention

the present invention is directed to a reflective film and a method for manufacturing the same, which solves the above problems of the related art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a reflective membrane, includes the basic unit, the upper surface of basic unit is from last to being equipped with protection surface course, glass bead layer and reflection of light aluminium foil layer down in proper order, be equipped with viscose layer and viscose inoxidizing coating in proper order on the lower surface of basic unit to down, still packaged with the LED chip in the glass bead layer.

preferably, the glass bead layer comprises a resin base layer and glass beads uniformly distributed in the resin base layer, and the particle size of the glass beads is 0.1-0.15 mm. The resin base layer takes epoxy resin as a raw material, so that the loss of reflected light can be reduced, and the implantation of glass beads is facilitated.

Preferably, the lead-out wires of the LED chip are perpendicular to the extending direction of the reflective film. The connecting wire from the side of being convenient for, when tearing reflection of light membrane simultaneously, can not cause the destruction to the LED chip.

Preferably, the protective surface layer is a PET film, and the thickness of the protective surface layer is 0.05-0.1 mm.

preferably, the base layer is formed by cutting a nylon fabric with the thickness of 0.2-0.3 mm.

Preferably, the adhesive protective layer is formed by cutting a PVC film with the thickness of 0.05-0.1mm, and the thickness of the adhesive layer is 0.06-0.08 mm.

A preparation method of a reflective film comprises the following operation steps:

S1: pre-treating a base layer, namely uniformly coating a layer of K-500 primer on the base layer, wherein the thickness of the coating is 2-4 microns, drying the coating in a drying channel with the temperature of 23-25 ℃ and the humidity of 63-66% for 10-15 minutes after coating, and waiting for the coating to be dried;

S2: vacuum aluminizing, namely inputting an aluminum wire with the diameter of 2mm into an evaporation boat at the speed of 0.4-0.8m/min under the condition of the vacuum degree of 2-8Pa to heat and evaporate the aluminum wire, so that aluminum atoms are condensed on a bottom glue layer, the rolling speed of a base layer is 120-180m/s, and a reflective aluminum foil layer with the thickness of 400-600A is formed on the bottom glue layer;

s3: implanting glass beads and LED chips, coating resin with the thickness being the same as the diameter of the glass beads on the reflective aluminum foil layer, implanting the glass beads into the resin, reserving an installation gap of the LED chips, outputting the base layer after the glass beads are implanted to the next station, and implanting the LED chips into the reserved installation gap;

s4: laminating, namely implanting glass beads and an LED chip into a resin base layer, outputting, laminating a PET film on the surface of the glass bead layer through a laminating machine to serve as a protective surface layer, drying the laminated glass bead layer in a drying oven with the temperature of 46-50 ℃ and the humidity of 24-28% for 3-5 hours, and rolling the dried laminated glass bead layer into a sectional material;

S5: and gluing, namely unreeling the section, coating a layer of polyurethane glue on the back surface of the base layer, and compounding a layer of PVC film on the glue layer to protect the glue layer. .

The invention has the technical effects and advantages that:

The invention is based on nylon fabric, so that the prepared reflective film has high structural strength, tensile strength, tear resistance and long service life, the primer is precoated on the nylon fabric, the vacuum aluminized film is smooth and clean, the firmness of the vacuum aluminized film is improved, the reflective effect is good, and the reflective film is not easy to fall off.

drawings

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

Fig. 2 is a schematic top view of the glass bead layer according to the present invention.

in the figure: the LED light source comprises a protection surface layer 1, a glass bead layer 2, glass beads 201, a resin base layer 202, a reflective aluminum foil layer 3, a base layer 4, an adhesive layer 5, an adhesive protection layer 6 and an LED chip 7.

Detailed Description

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.