Packaging bag suitable for infrared detection

Abstract

The utility model discloses a packaging bag suitable for infrared detection. The packaging bag is composed of an upper film body and a lower film body which are heat-sealed. The film body structure comprises an outer layer, an anti-reflection layer, a blocking layer and a sealing layer, and the performance is ensured through specific materials and thickness. Grooves are formed in the edge of the anti-reflection layer, and folding use is facilitated. The sealing layer and the outer layer extend out of the bag body to form a sealing opening with a sealing rubber strip. The lower outer layer extends out of a marking end, is provided with a color-changing ink area, can mark sterilization and irradiation, and is provided with a groove design convenient to tear off. The packaging bag not only has a simple structure and an intelligent indication function, but also is suitable for defect detection of conventional 800-1000nm infrared light.

Description

TECHNICAL FIELD

[0001] The utility model relates to packaging bag technical field, specifically to a kind of packaging bag suitable for infrared detection. BACKGROUND

[0002] With the development of non-refrigeration infrared imaging technology, infrared imager is widely applied in civil field. In printing process, due to the limitation of equipment, process and material, packaging product can appear various defects, such as ink dot, foreign matter, scratch, bubble, etc. Infrared detection can accurately identify these defects, ensure the neatness of packaging bag, especially medical instrument packaging bag, so as to realize sterilization operation subsequently. But the conventional packaging bag itself is multilayer structure, and polyvinyl chloride is used for barrier, and polyvinyl chloride itself also blocks infrared rays of certain wavelength, which makes it difficult for infrared rays to continuously penetrate the whole packaging bag, and the other side of the packaging bag also needs to be detected by infrared, which is low in detection efficiency, and polyvinyl chloride also absorbs infrared rays through C-Cl vibration absorption peak, causing false alarm in infrared detection. Therefore, it is necessary to design a packaging bag more suitable for infrared detection. SUMMARY

[0003] The utility model aims at designing and developing a kind of packaging bag, it is suitable for infrared detection, improves its light transmission effect, and its single side infrared detection can penetrate the whole packaging bag, improves detection efficiency, and reduces the probability of false alarm.

[0004] To achieve the above object, the technical scheme provided by the utility model is as follows:

[0005] A kind of packaging bag suitable for infrared detection, characterized by: including upper film body and lower film body, upper film body and lower film body end edge heat sealing and enclose to form bag body;

[0006] Upper film body includes upper outer layer, upper antireflection layer and upper sealing layer arranged in order from bag body outside to bag body inside, and lower film body includes lower outer layer, lower antireflection layer and lower sealing layer arranged in order from bag body outside to bag body inside;

[0007] Upper antireflection layer and lower antireflection layer are both polycarbonate light guide film.

[0008] Further, the thickness of upper antireflection layer and lower antireflection layer is 80~100μm.

[0009] Further, upper sealing layer and lower sealing layer are both high-density polyethylene film.

[0010] Further, the thickness of upper sealing layer and lower sealing layer is 40~80μm.

[0011] Further, the upper anti-sealing layer and the lower anti-sealing layer are both ethylene-vinyl alcohol copolymer coating dryings.

[0012] Further, the thickness of the upper anti-sealing layer and the lower anti-sealing layer is 25-60 microns.

[0013] Further, the upper outer layer and the lower outer layer are both polyimide films.

[0014] Further, the thickness of the upper outer layer and the lower outer layer is 50-80 microns.

[0015] Further, the upper anti-sealing layer and the lower anti-sealing layer are both ethylene-vinyl alcohol copolymer coating dryings.

[0016] Further, the upper anti-sealing layer and the lower anti-sealing layer are both ethylene-vinyl alcohol copolymer coating dryings.

[0017] Further, the upper outer layer and / or the lower outer layer further extends a mark end from the bag body, and the mark end is provided with a high-temperature color-changing ink area.

[0018] Further, the mark end is provided with an irradiation color-changing ink area.

[0019] Further, at least one set of tear lines is further provided between the bag body and the high-temperature color-changing ink area and / or the irradiation color-changing ink area.

[0020] The advantages and beneficial effects of the utility model lie in:

[0021] 1. The polycarbonate light guide film is anti-reflection, the absorption of infrared light is improved, the infrared light can penetrate the entire packaging bag for detection, and it is still applicable to existing irradiation, high-temperature sterilization and other technical requirements.

[0022] 2. The preset crease structure can bend the packaging bag along the crease, and the packaging bag can be folded along the crease while being detected in the plane, which is convenient for the actual needs of subsequent packaging of three-dimensional objects.

[0023] 3. The transparent ethylene-vinyl alcohol copolymer barrier layer is further provided between the anti-reflection film and the sealing film, which can not only improve the barrier effect of the packaging bag, but also further improve the bonding effect between the polycarbonate light guide film and the high-density polyethylene, and improve the yield.

[0024] 4. The color-changing ink area is arranged at the marking end extending out of the bag body, which can mark the sterilization condition of the packaging bag, and the marking end is used as a non-sealing end, which does not affect the infrared detection. The marking end and the bag body are provided with a tearing line, and tearing along the tearing line can make the color-changing ink separate from the bag body, so as to avoid that the color-changing ink may cause pollution when the medical device is opened. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 is a structural schematic diagram of the utility model;

[0026] Fig. 2 is a structural schematic diagram of the utility model;

[0027] Fig. 3 is an enlarged structural schematic diagram of A of the utility model;

[0028] Fig. 4 is an enlarged structural schematic diagram of B of the utility model;

[0029] In the drawing: 1-bag body, 2-upper outer layer, 3-upper light transmission layer, 4-upper barrier layer, 5-upper sealing layer, 6-lower outer layer, 7-lower light transmission layer, 8-lower barrier layer, 9-lower sealing layer, 10-fold line, 11-sealing port, 12-sealing adhesive strip, 13-marking end, 14-high-temperature ink color-changing area, 15-irradiation ink color-changing area, 16-tearing line. DETAILED DESCRIPTION

[0030] The specific embodiments of the utility model are further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0031] Example 1

[0032] Please refer to Figs. 1-4 A packaging bag suitable for infrared detection, characterized in that: comprising an upper film body and a lower film body, the upper film body and the lower film body are heat sealed and surrounded to form a bag body 1; the upper film body comprises an upper outer layer 2, an upper light transmission layer 3, an upper barrier layer 4 and an upper sealing layer 5 arranged in the bag body from outside to inside in turn, and the lower film body comprises a lower outer layer 6, a lower light transmission layer 7, a lower barrier layer 8 and a lower sealing layer 9 arranged in the bag body from outside to inside in turn.

[0033] The upper light transmission layer 3 and the lower light transmission layer 7 are both 90 μm thick polycarbonate light guide film; the upper sealing layer 5 and the lower sealing layer 9 are both 60 μm thick high-density polyethylene film; the upper barrier layer 3 and the lower barrier layer 8 are both 30 μm thick ethylene-vinyl alcohol copolymer obtained by coating and drying; the upper outer layer 2 and the lower outer layer 6 are both 60 μm thick colorless transparent polyimide film.

[0034] The upper and lower anti-reflection layers 3 and 7 are also provided with creases 10 for reducing the thickness of the upper and lower anti-reflection layers 3 and 7 to about half of the film thickness, and the upper and lower anti-reflection layers 3 and 7 can be folded along the creases 10 for convenient packaging. The upper and lower sealing layers 5 and 9, the upper and lower outer layers 2 and 6 extend out of the bag body 1 to form sealing ports 11, and the sealing ports 11 are provided with sealing adhesive strips 12, the two ends of the sealing adhesive strips 12 extending into the bag body 1. The sealing adhesive strips 12 are fused and heat sealed.

[0035] The lower outer layer 6 also extends out of the bag body 1 to form a marking end 13, and the marking end 13 is provided with a high-temperature color-changing ink area 14 and an irradiation color-changing ink area 15. The marking end between the bag body 1 and the high-temperature color-changing ink area and the irradiation color-changing ink area is also provided with two groups of tear lines 16.

[0036] Working principle:

[0037] The polycarbonate light guide film as the anti-reflection layer has good light transmission and light guide performance, can effectively transmit infrared rays, and reduce the loss of light in the transmission process. At the same time, the thickness ensures the balance between the mechanical strength and the optical performance of the light guide film. The high-density polyethylene film as the sealing layer not only provides good sealing performance, but also has a certain transmittance to infrared rays. It not only ensures the sealing effect, but also avoids the attenuation of infrared rays caused by excessive thickness. The ethylene-vinyl alcohol copolymer as the barrier layer mainly blocks moisture and oxygen, and the thickness of the preferred technical solution is coated and dried to make the layer have small absorption and reflection to infrared rays, so as to ensure that the infrared rays can penetrate the layer well. The polyimide film as the outer layer also has good light transmission and stability, can protect the internal layers from the external environment, and at the same time, expands the use temperature range of the packaging material to-40~200℃, has high insulation performance, and the above-mentioned layers all have good light transmission, so it is suitable for infrared detection.

[0038] It is worth noting that the polycarbonate light guide film has relatively high toughness and is not as soft as the other materials, so the packaging shown in the embodiment still maintains a certain bending effect, but needs to match the size of the packed articles, and the creases are provided at the edges of the polycarbonate light guide film to reduce the thickness and make it easy to bend or even fold to adapt to more articles while not affecting the sealing performance of the other parts. The lower outer layer extends out of the marking end, and the two kinds of inks provided on the marking end are used for marking high-temperature sterilization and irradiation sterilization, respectively. After sterilization, the marking end can be torn along the tear lines, so that the ink does not contaminate during packaging, transportation and use.

[0039] Example 2

[0040] The difference from example 1 is that the thickness of the upper and lower anti-reflection layers is 80μm; the thickness of the upper and lower sealing layers is 40μm; the thickness of the upper and lower barrier layers is 25μm; and the thickness of the upper and lower outer layers is 50μm.

[0041] Example 3

[0042] The difference from Example 1 is that the thickness of the upper and lower antireflection layers is 100 μm; the thickness of the upper and lower sealing layers is 80 μm; the thickness of the upper and lower barrier layers is 60 μm; and the thickness of the upper and lower outer layers is 80 μm.

[0043] Example 4

[0044] The difference from Example 1 is that the thickness of the upper and lower antireflection layers is 85 μm; the thickness of the upper and lower sealing layers is 75 μm; the thickness of the upper and lower barrier layers is 55 μm; and the thickness of the upper and lower outer layers is 70 μm.

[0045] The light transmittance of each of the above examples is greater than 95% after the infrared light of 800-1000 nm is continuously transmitted through the entire packaging bag at 25 degrees Celsius, with deionized water correction and a quartz cuvette as a carrier.

[0046] The above only describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A packaging bag suitable for infrared detection, characterized by: The bag body (1) is formed by heat sealing and combining upper and lower film bodies at their end edges. The upper film body comprises, from outside to inside of the bag body, an upper outer layer (2), an upper light transmission enhancement layer (3) and an upper sealing layer (5), and the lower film body comprises, from outside to inside of the bag body, a lower outer layer (6), a lower light transmission enhancement layer (7) and a lower sealing layer (9). The upper light transmission enhancement layer (3) and the lower light transmission enhancement layer (7) are both polycarbonate light transmission films.

2. The package of claim 1, wherein: The upper sealing layer (5) and the lower sealing layer (9) are both high-density polyethylene films.

3. The package of claim 1 or 2, wherein: An upper barrier layer (4) and a lower barrier layer (8) are respectively arranged between the upper light transmission enhancement layer (3) and the upper sealing layer (5) and between the lower light transmission enhancement layer (7) and the lower sealing layer (9), and the upper barrier layer (4) and the lower barrier layer (8) are both obtained by coating and drying ethylene-vinyl alcohol copolymer.

4. The package of claim 1 or 2, wherein: The upper outer layer (2) and the lower outer layer (6) are both polyimide films.

5. The package of claim 1 or 2, wherein: The edges of the upper light transmission enhancement layer (3) and the lower light transmission enhancement layer (7) are further provided with creases.

6. The package of claim 1 or 2, wherein: The upper sealing layer (5), the lower sealing layer (9), the upper outer layer (2) and the lower outer layer (6) all extend out of the bag body to form sealing ports (11), the sealing ports (11) are provided with sealing rubber strips (12), and both ends of the sealing rubber strips (12) extend into the bag body (1).

7. The package of claim 1, wherein: The upper outer layer (2) and / or the lower outer layer (6) further extend out of the bag body (1) to form marking ends, the marking ends are provided with high-temperature color-changing ink areas (14) and / or irradiation color-changing ink areas (15).

8. The package of claim 7, wherein: At least one group of tear lines (16) are further arranged between the bag body (1) and the high-temperature color-changing ink areas (14) and / or the irradiation color-changing ink areas (15).

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