JP2002107827A - Reflection type screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reflection-type screen whose practicability is made very satisfactory with superior incombustibility and contrast performance, with which an image projected is viewed clearly, with the bright inside of an aircraft being made compatible. SOLUTION: In this reflection type screen, a reflection layer 2 is laminated on a supporting layer 1, and a light-absorbing layer 3 is laminated on the reflection layer 2 and a light diffusing layer 4 is laminated on the light-absorbing layer 3, and self-extinguishing film is adopted as the support layer 1 and the light diffusing layer 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflection type screen used in an aircraft or the like.

[0002]

2. Description of the Related Art Interior parts used in aircraft are subject to strict combustion standards (for example,
F2) needs to be cleared, and reflective screens used in this aircraft are naturally used with high flame retardancy that meets strict combustion standards.

[0003] A reflective screen generally used in an aircraft is a white screen. However, although this white screen has sufficient performance in flame retardancy, since it is a perfect diffusion plate, all external light entering the white screen enters the eyes of the observer, and therefore, the contrast performance is low. There is a problem.

[0004] Therefore, if a high-contrast reflection type screen having good contrast performance such as a polarizing screen is used, the above-mentioned problem of contrast performance can be solved.
Conventional high-contrast reflective screens are mainly made of a flammable plastic such as a PP film (polypropylene film) or a PET film (polyethylene terephthalate film) in order to ensure winding property and workability. Point was insufficient.

[0005] The present invention has been achieved in view of the above-mentioned situation, and has been extremely excellent in practicality which has both high flame retardancy and high contrast performance in which a projected image can be clearly seen even in a bright aircraft. A reflection type screen is provided.

[0006]

The gist of the present invention will be described with reference to the accompanying drawings.

A reflective layer 2 is laminated on the support layer 1, a light absorbing layer 3 is laminated on the reflective layer 2, and the light absorbing layer 3 is laminated on the reflective layer 2.
A reflective screen having a light diffusion layer 4 laminated thereon, wherein a self-extinguishing film is employed as the support layer 1 and the light diffusion layer 4.

[0008] Further, in the reflection type screen according to the first aspect, a reflection type screen is characterized in that a PVC film is employed as a self-extinguishing film.

Further, in the reflection type screen according to the present invention, a semi-rigid PVC film is used as the support layer 1, and a soft PVC film having a light diffusing property is used as the light diffusing layer 4. It relates to a reflective screen.

Further, in the reflection type screen according to any one of claims 1 to 3, the reflection layer 2 in which an aluminum foil is laminated on a PET film via an adhesive layer is adopted as the reflection layer 2. The present invention relates to a reflective screen characterized by the following.

Further, in the reflection type screen according to any one of claims 1 to 4, the light absorption layer 3 has a function of joining the reflection layer 2 and the light diffusion layer 4 and is mixed with a flame retardant. The present invention relates to a reflection type screen characterized in that an adhesive or a pressure-sensitive adhesive is used.

The reflection screen according to any one of claims 1 to 5, wherein the reflection layer 2 has a top gain of 5 to 15, a position of 20 to 35 degrees in the horizontal direction of the screen, and the screen. The gain is 1/3 of the top gain at 5 to 10 degrees vertically.
The present invention relates to a reflective screen characterized by employing a reflective layer 2 having a viewing angle characteristic as follows.

[0013]

The self-extinguishing film employed as the support layer 1 and the light diffusion layer 4 exhibits high flame retardancy.

The basic configuration of the optical part is the same as that of a conventional polarizing screen, and high contrast performance is exhibited.

Since the present invention is constructed as described above, it is a reflection type screen which has both high flame retardancy and high contrast performance and is extremely practical.

[0016]

FIG. 1 shows an embodiment of the present invention, which will be described below.

In this embodiment, a reflection layer 2 is laminated on a support layer 1, a light absorption layer 3 is laminated on the reflection layer 2, and a light diffusion layer 4 is laminated on the light absorption layer 3. In this case, a self-extinguishing film is used as the support layer 1 and the light diffusion layer 4.

The definition of self-extinguishing property is that the fire is ignited by a burner, but then extinguishes naturally when the burner is removed.

As the self-extinguishing film, a PVC film (polyvinyl chloride film) having high flame retardancy and excellent optical characteristics is used.

Further, in this PVC film, a semi-rigid PVC film (with a plasticizer of 3 to 15%) is used as the support layer 1.
(Weight) and a soft PVC film (a plasticizer mixed with 15 to 50% (by weight)) is used as the light diffusion layer 4.

The soft PVC film is provided with a light diffusing property. The light diffusing property is imparted by an appropriate means such as embossing the soft PVC film or applying a matting agent.

Incidentally, a semi-rigid PVC film may be employed as the light diffusion layer 4.

As the reflection layer 2, a reflection layer 2 in which an aluminum foil is laminated on a PET film via an adhesive layer is employed.

The reflection layer 2 has a top gain of 5 to 15 and 20 in the horizontal direction of the screen in order for the reflection type screen to exhibit good contrast performance.
5 to 10 degrees at 35 degrees and screen vertical
The reflection layer 2 having a viewing angle characteristic in which the gain is 1/3 of the top gain at each degree position is employed.

The top gain is the maximum value of the ratio when the luminance (cd / m ² ) of the white plate when light is irradiated to the white plate is 1.

As the light absorbing layer 3, an adhesive or a pressure-sensitive adhesive having a function of bonding the reflecting layer 2 and the light diffusing layer 4 and containing a phosphorus-based flame retardant is used.

As the phosphorus-based flame retardant, a phosphoric acid condensed ester having high flame retardancy may be used.

In addition to the phosphorus-based flame retardant, for example, a halogen compound or a nitride may be employed as the flame retardant.

Further, a black dye soluble in the adhesive or the pressure-sensitive adhesive is mixed with the adhesive or the pressure-sensitive adhesive.

The light absorbing layer 3 has a total light transmittance of 50%.
It is desirable to employ a value of from 70% to 70%.

The black dye desirably has a spectrum that absorbs light other than the main wavelength range of the projector light.

The light absorption layer 3 is applied to the reflection layer 2 or the light diffusion layer 4 by an appropriate coating method.

The support layer 1 and the reflection layer 2 are joined by an adhesive or a pressure-sensitive adhesive. Further, it is preferable that the phosphorus-based flame retardant is also mixed with the adhesive and the pressure-sensitive adhesive and the adhesive for bonding the PET film forming the reflective layer 2 and the aluminum foil.

Hereinafter, the results of the performance experiment of this embodiment will be described in detail.

As the support layer 1, semi-hard P having a thickness of 100 μm
A VC film is used, a 7 μm-thick aluminum foil, a 5 μm-thick adhesive layer, and a 62 μm-thick P
The light absorbing layer 3 has a thickness of 5 μm, and the light diffusing layer 4 has a thickness of 80 μm.
When the flame retardancy of the product of this embodiment employing the VC film was measured, the average self-extinguishing time was 2.5 seconds, the average burning length was 5.5 inches (about 14 mm), and the F2 standard (self-extinguishing time was 15 seconds) , Average burning length of 8 inches).

When the contrast performance was measured, the top gain was 2.9 and the gain was 1/1 of the top gain.
The angle of 3 is 29.5 ° in the horizontal direction and 17.5 ° in the vertical direction.
It was 0 °, and it was confirmed that it had a contrast performance in which an image could be clearly seen even in an aircraft.

Also, the winding property was good, and there was no change in the appearance and no wrinkles were generated even after repeated winding experiments.

On the other hand, as a comparative example, a 125 μm-thick PET film was employed as the support layer 11, and a 7 μm-thick aluminum foil, a 5 μm-thick adhesive layer and a 62 μm-thick PET film were laminated as the reflective layer 12. The light absorbing layer 13 (containing no phosphorus-based flame retardant) is 5 μm thick, and the light diffusing layer 14 is a 20 μm thick OPP film (biaxially oriented polypropylene film).
In order to improve the flame retardancy, an experiment was performed on the back surface of the support layer 11 in which a flame retardant layer 15 composed of an aluminum foil having a thickness of 7 μm and an OPP film having a thickness of 20 μm was laminated in the same manner as the product of the present example. However, although the contrast performance and the winding property were the same as those of the product of this example, the average self-extinguishing time was 40 seconds and the average burning length was 5 inches in the flame retardancy, and it was confirmed that the F2 standard could not be cleared. .

In this embodiment, as described above, since the self-extinguishing PVC films are laminated on the front and back, high flame retardancy enough to be used in an aircraft is exhibited.
This is a very practical reflection type screen that can obtain high contrast equivalent to that of a polarizing screen.

Since the light-absorbing layer 3 contains a phosphorus-based flame retardant, the phosphorus-based flame retardant exhibits high flame retardancy.

Further, since the support layer 1 is a semi-rigid PVC film, the screen is given a certain degree of hardness, and the image projected on the screen is prevented from being disturbed by a slight wind. Will be.

Since a polarizing plate is not used, the latest projector, for example, is designed so that R (red), G (green), and B (red), for example, only G has a different vibration direction of polarized light. It can be used even if it is the same as above, and also in this respect, it is excellent in practicality and versatility.

The optical characteristics of the reflective layer 2 are such that the gain is 1 so that external light, especially illumination light from the ceiling, is not reflected.
Since the angle of / 3 is set to 5 to 10 degrees,
An extremely high-contrast image can be observed even in a bright aircraft. Further, since the top gain is high, the image itself is bright, and a good image can be observed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of the present embodiment.

FIG. 2 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support layer 2 Reflection layer 3 Light absorption layer 4 Light diffusion layer

Claims (6)

[Claims] 1. A reflective screen comprising: a reflective layer laminated on a support layer; a light absorbing layer laminated on the reflective layer; and a light diffusion layer laminated on the light absorbing layer. A reflective screen comprising a self-extinguishing film as a support layer and a light diffusion layer. 2. The reflective screen according to claim 1, wherein a PVC film is employed as the self-extinguishing film. 3. The reflective screen according to claim 2, wherein a semi-rigid PVC film is employed as the support layer, and a soft PVC film having light diffusivity is employed as the light diffusing layer. screen. 4. The reflective screen according to claim 1, wherein a reflective layer in which an aluminum foil is laminated on a PET film via an adhesive layer is employed as the reflective layer. A reflective screen characterized by the following. 5. The reflective screen according to claim 1, wherein the adhesive has a function of joining the reflective layer and the light diffusion layer as the light absorbing layer, and is mixed with a flame retardant. Alternatively, a reflective screen characterized by employing an adhesive. 6. The reflective screen according to claim 1, wherein the reflective layer has a top gain of 5 to 15, a position of 20 to 35 degrees in the horizontal direction of the screen, and a vertical position of the screen. A reflective screen comprising a reflective layer having a viewing angle characteristic in which a gain is 1/3 of the top gain at each position of 5 to 10 degrees in the direction.