Shading bag for film

Abstract

The utility model relates to a shading bag for films, which belongs to the technical field of shading bags and comprises two pieces of oppositely arranged shading paper, a plurality of adjacent edges of the two pieces of shading paper are sequentially bonded through glue, and a film taking and placing opening is defined between the two pieces of shading paper. And each piece of shading paper sequentially comprises a red card paper, a black film and a black card paper which are bonded and connected from outside to inside. The shading paper is formed by sequentially bonding and connecting the red card paper, the black film and the black card paper from outside to inside, on one hand, a traditional aluminum foil shading material is replaced, the hardness of a shading bag is reduced, and film storing and taking convenience is improved; on the other hand, the color layout of red + black + black can completely shield sunlight and prevent recording information of the film from being lost due to penetration of tiny light beams.

Description

Technical Field

[0001] The utility model relates to the technical field of light-shielding bags, in particular to a light-shielding bag for film. Background Art

[0002] Film is a commonly used imaging item, mainly made of silver halide photosensitive materials, and is made through multiple steps such as exposure, development, fixing, and drying. Because it requires a relatively strict environment for storage, it is usually sealed in a light-shielding bag to prevent light leakage and damage to the film. Although the existing light-shielding bag can provide a relatively good environment for the storage of film, it still has the following disadvantages:

[0003] 1. Existing light-shielding bags mainly use aluminum foil to block light, which cannot block light 100%, resulting in information loss when the film is placed for a long time;

[0004] 2. The texture of the aluminum foil structure is harder than that of the photo and lacks soft cushioning. The film itself has a relatively fine texture and no indentation is allowed during use. Minor indentations may cause the loss of information recorded on the film.

[0005] Therefore, how to design a relatively soft light-shielding bag for film that can completely block light is a problem that those skilled in the art need to solve urgently. Utility Model Content

[0006] The utility model provides a light-shielding bag for film, which solves the technical problems that the existing light-shielding bag made of aluminum foil cannot completely shield light and the hard material easily causes indentations on the film.

[0007] The utility model provides a technical solution to the above-mentioned technical problem as follows: a light-shielding bag for film, comprising two pieces of light-shielding paper arranged opposite to each other, wherein the adjacent edges of the two pieces of light-shielding paper are sequentially bonded by glue and a film access opening is defined between the two pieces of light-shielding paper, and each piece of the light-shielding paper comprises red cardboard, black film and black cardboard bonded together from the outside to the inside.

[0008] The beneficial effects of the utility model are: red cardboard, black film and black cardboard are bonded and connected in sequence from the outside to the inside to form shading paper, which on the one hand replaces the traditional aluminum foil shading material, reduces the hardness of the shading bag, and improves the convenience of film access; on the other hand, the color layout of red + black + black can completely block sunlight and prevent the film from losing recorded information due to the penetration of tiny light beams.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, it also includes a double-sided adhesive strip, which is bonded and connected to the opposite paper surfaces of the two pieces of shading paper corresponding to the film taking and releasing opening.

[0011] A further beneficial effect of the above method is that after the film is placed in the light-shielding bag, a double-sided adhesive strip can be used to seal the film access opening so as to store the film for a long time.

[0012] Furthermore, the red cardboard and the black cardboard are both made of pure log pulp material.

[0013] Furthermore, the black film is made of PE material.

[0014] Furthermore, the thickness of the red cardboard is 0.1-0.2 mm, the thickness of the black film is 0.1-0.2 mm, and the thickness of the black cardboard is 0.1-0.2 mm.

[0015] Furthermore, the surface of the red cardboard, the surface of the black film and the surface of the black cardboard have no creases. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the assembly structure of a light-shielding bag for film according to the utility model;

[0017] Figure 2 The utility model is a schematic diagram of the explosion structure of a light-shielding bag for film.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Shading paper, 11. Red cardboard, 12. Black film, 13. Black cardboard. DETAILED DESCRIPTION

[0020] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0021] like Figure 1 As shown, a light-shielding bag for film includes two pieces of light-shielding paper 1 arranged opposite to each other, multiple adjacent edges of the two pieces of light-shielding paper 1 are bonded in sequence by glue and a film access opening is defined between the two pieces of light-shielding paper 1, and each piece of light-shielding paper 1 includes red cardboard 11, black film 12 and black cardboard 13 bonded and connected from the outside to the inside.

[0022] Specifically, a double-sided adhesive strip may also be included, and the double-sided adhesive strip is bonded and connected to the opposite paper surfaces of the two pieces of shading paper 1 corresponding to the film taking-in and putting-out opening.

[0023] Specifically, both the red cardboard 11 and the black cardboard 13 can be made of pure log pulp material.

[0024] Specifically, the black film 12 can be made of PE material.

[0025] Specifically, the thickness of the red card paper 11 may be 0.1 to 0.2 mm, the thickness of the black film 12 may be 0.1 to 0.2 mm, and the thickness of the black card paper 13 may be 0.1 to 0.2 mm.

[0026] Specifically, the surface of the red card paper 11 , the surface of the black film 12 , and the surface of the black card paper 13 have no creases.

[0027] Experiment 1: In a closed space, simulated sunlight was used to irradiate the shading bag at 360°. Within 168h-240h, the film showed no color change.

[0028] Experiment 2: In a light-enhanced space, use natural light to irradiate the light-shielding bag. After 7 to 10 days, there is no color change on the film.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A light-shielding bag for film, characterized in that: The invention comprises two pieces of shading paper (1) arranged opposite to each other, wherein the adjacent edges of the two pieces of shading paper (1) are sequentially bonded by glue and a film taking-in and putting-out opening is defined between the two pieces of shading paper (1), and each piece of shading paper (1) comprises, from the outside to the inside, a red cardboard (11), a black film (12) and a black cardboard (13) which are bonded and connected to each other.

2. A light-shielding bag for film according to claim 1, characterized in that: It also includes a double-sided adhesive strip, which is bonded and connected to the opposite paper surfaces of the two pieces of the shading paper (1) corresponding to the film taking-in and putting-out opening.

3. A light-shielding bag for film according to claim 1, characterized in that: The red cardboard (11) and the black cardboard (13) are both made of pure log pulp material.

4. A light-shielding bag for film according to claim 1, characterized in that: The black film (12) is made of PE material.

5. A light-shielding bag for film according to claim 1, characterized in that: The thickness of the red cardboard (11) is 0.1 to 0.2 mm, the thickness of the black film (12) is 0.1 to 0.2 mm, and the thickness of the black cardboard (13) is 0.1 to 0.2 mm.

6. A light-shielding bag for film according to claim 1, characterized in that: The surface of the red cardboard (11), the surface of the black film (12) and the surface of the black cardboard (13) are free of creases.

Images