Double-sided printed oral liquid medicinal composite film

Abstract

The utility model relates to a double-sided printed medicinal composite film for oral liquid, which comprises an external polyester layer, a double-sided printed soft aluminum layer, an internal polyester layer and a polyethylene layer which are sequentially laminated along the direction close to the oral liquid, and a glue layer is arranged between every two adjacent layers; the double-sided printing soft aluminum layer comprises a soft aluminum layer and ink layers printed on the two sides of the soft aluminum layer at the same time. The ink layers are printed on the two surfaces of the soft aluminum layer at the same time, so that one-time double-surface printing can be realized, and time and labor cost are saved; meanwhile, the ink layers are compounded on the two faces of the soft aluminum layer, adjustment can be conducted during printing, alignment overprinting of patterns is completed, and the printing effect is improved; and the barrier property and the mechanical strength of the double-sided printed soft aluminum layer are also remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging materials technology, specifically to a double-sided printed composite film for oral liquid medicine. Background Technology

[0002] Oral liquid pharmaceutical composite film is a multi-layer composite packaging material used to package oral liquid preparations such as solutions, suspensions, and syrups. It is usually composed of multiple layers of materials with different functions to ensure the stability, safety, and ease of use of the medicine.

[0003] Traditional oral liquid pharmaceutical composite films typically have a four-layer structure. The outer layer is a protective layer providing mechanical strength and a printable surface; the middle two layers are barrier layers that block oxygen, water vapor, and light to prevent drug degradation; and the inner layer is a sealing layer that directly contacts the liquid medication and has certain chemical resistance and heat-sealing properties. For example, CN116922886A discloses a liquid packaging composite film suitable for retort cooking and its preparation process. This liquid packaging composite film includes a first polyester layer, an aluminum foil layer, a second polyester layer, and a high-density polyethylene layer stacked sequentially from the outside in, with adjacent layers bonded together by a two-component polyurethane adhesive. The liquid packaging composite film provided by this invention uses a four-layer composite structure, increasing the material's stiffness and strength, which is beneficial for maintaining a firm and undeformed appearance after packaging and preventing bursting during high-temperature retort cooking.

[0004] Conventional single-sided printed composite films are printed on the outer layer, near the barrier layer; conventional double-sided printed composite films are printed on the inner layer, near the barrier layer, simultaneously. However, existing research on double-sided printed oral liquid pharmaceutical composite films requires two separate printing processes, which is time-consuming and labor-intensive. Furthermore, printing on the outer and inner layers separately makes it impossible to guarantee that each layer shrinks at the same rate, making it difficult to align the patterns during structural lamination, thus reducing product quality.

[0005] In summary, there is an urgent need to develop a composite film for oral liquid medicine that can achieve one-time double-sided printing with double-sided pattern alignment and overprinting. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a double-sided printed oral liquid pharmaceutical composite film, which can realize simultaneous double-sided printing, complete the alignment and overprinting of patterns, and improve product performance and quality.

[0007] To achieve the objective of this utility model, the following technical solution is adopted:

[0008] This utility model provides a double-sided printed oral liquid pharmaceutical composite film. Along the direction close to the oral liquid, the double-sided printed oral liquid pharmaceutical composite film includes an outer polyester layer, a double-sided printed soft aluminum layer, an inner polyester layer and a polyethylene layer stacked in sequence, with an adhesive layer between adjacent layers.

[0009] The double-sided printed soft aluminum layer includes a soft aluminum layer and an ink layer printed simultaneously on both sides of the soft aluminum layer.

[0010] The double-sided printed oral liquid pharmaceutical composite film provided by this utility model can achieve one-time double-sided printing by simultaneously printing ink layers on both sides of the soft aluminum layer, saving time and labor costs. At the same time, the composite ink layers on both sides of the soft aluminum layer can be adjusted during printing to complete the alignment and registration of the pattern, improve the printing effect, and ensure product quality. The barrier properties and mechanical strength of the double-sided printed soft aluminum layer are also significantly improved.

[0011] It should be noted that this utility model does not impose specific requirements or special limitations on the shape and structural features of the double-sided printed oral liquid pharmaceutical composite film. Those skilled in the art can make adaptive adjustments to the shape of the double-sided printed oral liquid pharmaceutical composite film according to the usage scenario and testing conditions.

[0012] As a preferred technical solution of this utility model, the thickness of both the outer polyester layer and the inner polyester layer is 8-40μm, for example, it can be 8μm, 12μm, 15μm, 20μm, 30μm or 40μm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable, and 12μm is preferred.

[0013] As a preferred technical solution of this utility model, the thickness of the soft aluminum layer is 20-60μm, for example, it can be 20μm, 30μm, 40μm, 50μm or 60μm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable, and 30μm is preferred.

[0014] As a preferred technical solution of this utility model, the thickness of the ink layer is 1-3μm, for example, it can be 1μm, 1.5μm, 2μm, 2.5μm or 3μm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable, and 1μm is preferred.

[0015] As a preferred technical solution of this utility model, the thickness of the polyethylene layer is 30-120μm, for example, it can be 30μm, 40μm, 50μm, 60μm, 70μm, 80μm, 90μm, 100μm, 110μm or 120μm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable, and 50μm is preferred.

[0016] As a preferred technical solution of this utility model, the thickness of the adhesive layer is 1-5μm, for example, it can be 1μm, 2μm, 2.5μm, 3μm, 4μm or 5μm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable, preferably 2-3μm.

[0017] It should be noted that this utility model does not impose specific requirements or special limitations on the specific material of the adhesive layer. The function of the adhesive layer in this utility model is to bond and composite adjacent film layers. Therefore, it can be understood that other adhesive layers that can achieve this function can be used in this utility model. Those skilled in the art can make adaptive adjustments to the material of the adhesive layer according to the usage scenario and testing conditions.

[0018] The double-sided printed oral liquid pharmaceutical composite film provided by this utility model is prepared by first printing ink layers on both sides of a soft aluminum layer simultaneously to obtain a double-sided printed soft aluminum layer; then bonding the outer polyester layer to the outer surface of the double-sided printed soft aluminum layer with an adhesive layer; then bonding the inner polyester layer to the inner surface of the double-sided printed soft aluminum layer with an adhesive layer; finally bonding the polyethylene layer to the inner polyester layer with an adhesive layer to obtain a double-sided printed oral liquid pharmaceutical composite film.

[0019] The numerical range described in this utility model includes not only the point values ​​listed above, but also any point values ​​within the above numerical range that are not listed. Due to space limitations and for the sake of brevity, this utility model will not exhaustively list the specific point values ​​included in the range.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The double-sided printed oral liquid pharmaceutical composite film provided by this utility model can achieve one-time double-sided printing by simultaneously printing ink layers on both sides of the soft aluminum layer, saving time and labor costs. At the same time, the composite ink layers on both sides of the soft aluminum layer can be adjusted during printing to complete the alignment and registration of the pattern, improve the printing effect, and ensure product quality. The barrier properties and mechanical strength of the double-sided printed soft aluminum layer are also significantly improved. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the double-sided printed oral liquid pharmaceutical composite film provided in Embodiment 1 of this utility model.

[0023] The layers are: 1. outer polyester layer; 2. inner polyester layer; 3. polyethylene layer; 4. adhesive layer; 5. soft aluminum layer; 6. ink layer. Detailed Implementation

[0024] It should be understood that in the description of this utility model, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] This embodiment provides a double-sided printed composite film for oral liquid medicine, as shown in the schematic diagram below. Figure 1 As shown, along the direction closer to the oral liquid, the double-sided printed oral liquid pharmaceutical composite film includes an outer polyester layer 1, a double-sided printed soft aluminum layer, an inner polyester layer 2, and a polyethylene layer 3 stacked sequentially, with an adhesive layer 4 between adjacent layers; the double-sided printed soft aluminum layer includes a soft aluminum layer 5 and an ink layer 6 printed simultaneously on both sides of the soft aluminum layer 5.

[0029] The outer polyester layer 1 and the inner polyester layer 2 are both 12 μm thick; the soft aluminum layer 5 is 30 μm thick; the ink layer 6 is 1 μm thick; the polyethylene layer 3 is 50 μm thick; and the adhesive layer 4 is 3 μm thick.

[0030] The oral liquid pharmaceutical composite film in this embodiment can achieve one-time double-sided printing, saving time and labor costs; the structure of the soft aluminum layer with two-sided composite ink layers can complete the alignment and overprinting of the front and back patterns, improve the printing effect, and ensure product quality; the barrier properties and mechanical strength of the double-sided printed soft aluminum layer are also significantly improved.

[0031] Example 2

[0032] This embodiment provides a double-sided printed oral liquid pharmaceutical composite film. Along the direction close to the oral liquid, the double-sided printed oral liquid pharmaceutical composite film includes an outer polyester layer 1, a double-sided printed soft aluminum layer, an inner polyester layer 2, and a polyethylene layer 3 stacked sequentially, with an adhesive layer 4 disposed between adjacent layers; the double-sided printed soft aluminum layer includes a soft aluminum layer 5 and an ink layer 6 printed simultaneously on both sides of the soft aluminum layer 5.

[0033] The outer polyester layer 1 and the inner polyester layer 2 are both 8 μm thick; the soft aluminum layer 5 is 20 μm thick; the ink layer 6 is 1 μm thick; the polyethylene layer 3 is 30 μm thick; and the adhesive layer 4 is 1 μm thick.

[0034] The oral liquid pharmaceutical composite film in this embodiment can achieve one-time double-sided printing, saving time and labor costs; the structure of the soft aluminum layer with two-sided composite ink layers can complete the alignment and overprinting of the front and back patterns, improve the printing effect, and ensure product quality; the barrier properties and mechanical strength of the double-sided printed soft aluminum layer are also significantly improved.

[0035] Example 3

[0036] This embodiment provides a double-sided printed oral liquid pharmaceutical composite film. Along the direction close to the oral liquid, the double-sided printed oral liquid pharmaceutical composite film includes an outer polyester layer 1, a double-sided printed soft aluminum layer, an inner polyester layer 2, and a polyethylene layer 3 stacked sequentially, with an adhesive layer 4 disposed between adjacent layers; the double-sided printed soft aluminum layer includes a soft aluminum layer 5 and an ink layer 6 printed simultaneously on both sides of the soft aluminum layer 5.

[0037] The outer polyester layer 1 and the inner polyester layer 2 are both 40 μm thick; the soft aluminum layer 5 is 60 μm thick; the ink layer 6 is 3 μm thick; the polyethylene layer 3 is 120 μm thick; and the adhesive layer 4 is 5 μm thick.

[0038] The oral liquid pharmaceutical composite film in this embodiment can achieve one-time double-sided printing, saving time and labor costs; the structure of the soft aluminum layer with two-sided composite ink layers can complete the alignment and overprinting of the front and back patterns, improve the printing effect, and ensure product quality; the barrier properties and mechanical strength of the double-sided printed soft aluminum layer are also significantly improved.

[0039] Comparative Example 1

[0040] This comparative example provides a double-sided printed oral liquid pharmaceutical composite film. The difference from Example 1 is that the double-sided printed soft aluminum layer is replaced with a single soft aluminum layer 5, and the outer polyester layer 1 is laminated with an ink layer 6 on the side close to the soft aluminum layer 5, and the inner polyester layer 2 is laminated with an ink layer 6 on the side close to the soft aluminum layer 5. All other aspects are the same as in Example 1.

[0041] The oral liquid pharmaceutical composite film in this comparative example requires printing on the outer and inner polyester layers separately, which reduces production efficiency, increases time and labor costs, makes it impossible to align the front and back patterns, significantly reduces product quality, and also reduces the barrier properties and mechanical strength of the single soft aluminum layer.

[0042] In summary, the double-sided printed oral liquid pharmaceutical composite film provided by this utility model can achieve one-time double-sided printing by simultaneously printing ink layers on both sides of the soft aluminum layer, saving time and labor costs. At the same time, the ink layers on both sides of the soft aluminum layer can be adjusted during printing to complete the alignment and registration of the pattern, improve the printing effect, and ensure product quality. The barrier properties and mechanical strength of the double-sided printed soft aluminum layer are also significantly improved.

[0043] The applicant declares that the above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A double-side printed oral liquid pharmaceutical composite film, characterized in that, Along the direction close to the oral liquid, the double-sided printed oral liquid pharmaceutical composite film includes an outer polyester layer, a double-sided printed soft aluminum layer, an inner polyester layer and a polyethylene layer stacked in sequence, with an adhesive layer between adjacent layers. The double-sided printed soft aluminum layer includes a soft aluminum layer and an ink layer printed simultaneously on both sides of the soft aluminum layer.

2. The dual printed oral liquid pharmaceutical composite film according to claim 1, wherein, The thickness of both the outer polyester layer and the inner polyester layer is 8-40 μm.

3. The double-sided printed oral liquid pharmaceutical composite film according to claim 2, wherein, The thickness of both the outer polyester layer and the inner polyester layer is 12 μm.

4. The dual printed oral liquid pharmaceutical composite film of claim 1, wherein, The thickness of the soft aluminum layer is 20-60 μm.

5. The double-sided printed oral liquid pharmaceutical composite film according to claim 4, wherein, The thickness of the soft aluminum layer is 30 μm.

6. The dual printed oral liquid pharmaceutical composite film of claim 1, wherein, The thickness of the ink layer is 1-3 μm.

7. The dual printed oral liquid pharmaceutical composite film of claim 1, wherein, The thickness of the polyethylene layer is 30-120 μm.

8. The double-sided printed oral liquid pharmaceutical composite film according to claim 7, wherein, The thickness of the polyethylene layer is 50 μm.

9. The dual printed oral liquid pharmaceutical composite film of claim 1, wherein, The thickness of the adhesive layer is 1-5 μm.

10. The double-sided printed oral liquid pharmaceutical composite film according to claim 9, wherein, The thickness of the adhesive layer is 2-3 μm.

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