High-barrier sewing forming packaging bag
By designing a multi-layered high-barrier sewn-lined packaging bag, the problem of poor barrier performance of sewn-lined packaging is solved, achieving extended shelf life and high barrier performance of the sewn-line, and is suitable for production by ordinary packaging machines.
Patent Information
- Application Number
- CN202423045624.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2026-05-15
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing absorbable suture packaging has poor barrier properties, resulting in a short shelf life and failing to meet market demand.
Design a high-barrier stitched packaging bag, which consists of an upper film and a lower film. The film is composed of a multi-layer structure, including an upper outer layer, an upper barrier layer, an upper functional layer, a lower outer layer, a lower barrier layer, a lower inner layer, and a lower functional layer. The materials of each layer are such as nylon, aluminum foil, and polyethylene film containing desiccant, to achieve high barrier performance.
It improves the shelf life of the sutures, provides high barrier properties to prevent water and oxygen penetration, and enhances puncture and abrasion resistance. It is suitable for production using ordinary FFS packaging machines.
Smart Images
Figure CN224235463U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical and beauty equipment technology, specifically to a high-barrier sewn-in packaging bag. Background Technology
[0002] Medical sutures are widely used in various surgeries, including general surgery, orthopedics, obstetrics and gynecology, cardiothoracic surgery, and neurosurgery. With the continuous development of medical technology and the increasing demands for medical quality, high-end surgical sutures will become a key focus of market development. The market size of medical sutures in my country has continued to expand, growing from 4.39 billion yuan in 2015 to 8.62 billion yuan in 2022, with a compound annual growth rate of approximately 10.12%. Absorbable sutures are the mainstream product, accounting for 79.2% of the market share. High-end products such as sutures and antibacterial surgical sutures are gradually entering the market, primarily through pre-formed packaging. Currently, there is no pre-formed packaging for absorbable sutures in China. Although some imported absorbable sutures use pre-formed packaging, their relatively poor barrier properties result in a shorter shelf life, failing to meet market demand. Utility Model Content
[0003] The purpose of this utility model is to overcome the defects in the existing technology and provide a high-barrier stitched packaging bag, which can effectively solve the above-mentioned problems in the existing technology.
[0004] To achieve the above objectives, the technical solution of this utility model is to design a high-barrier stitch-formed packaging bag, which includes an upper film and a lower film, wherein the ends of the upper film and the lower film are heat-sealed and enclosed to form a bag body.
[0005] The upper film body includes an upper outer layer, an upper barrier layer, and an upper functional layer arranged sequentially from the outside of the bag body to the inside of the bag body; the lower film body includes a lower outer layer, a lower barrier layer, a lower inner layer, and a lower functional layer arranged sequentially from the outside of the bag body to the inside of the bag body.
[0006] Both the upper and lower functional layers are polyethylene or polypropylene films containing a desiccant.
[0007] Furthermore, both the upper and lower functional layers are blended film layers formed by blending desiccant particles and polyethylene.
[0008] Furthermore, the thickness of both the upper and lower functional layers is 25–80 μm.
[0009] Furthermore, both the upper outer layer and the lower outer layer are made of nylon.
[0010] Furthermore, the thickness of both the upper outer layer and the lower outer layer is 40–100 μm.
[0011] Furthermore, both the upper and lower barrier layers are made of aluminum foil.
[0012] Furthermore, the thickness of both the upper and lower barrier layers is 25–60 μm.
[0013] Furthermore, the lower inner layer is made of nylon, and the thickness of the lower inner layer is 15–40 μm.
[0014] The advantages and beneficial effects of this utility model are as follows:
[0015] (1) This utility model can increase the shelf life of the absorption device by incorporating desiccant particles into PE to form an upper functional layer and a lower functional layer.
[0016] (2) Both the upper and lower barrier layers of this utility model are made of aluminum foil, which can realize three-dimensional packaging to replace flat bags, and can also achieve high barrier, water and oxygen barrier.
[0017] (3) The outer layer of the bag described in this utility model is made of nylon (NY), which increases the puncture resistance and abrasion resistance of the packaging bag.
[0018] (4) The product structure of the packaging bag described in this utility model is simple and can be used with ordinary FFS packaging machines. Attached Figure Description
[0019] Figure 1 This is a structural schematic diagram of a high-barrier stitched packaging bag according to the present invention;
[0020] In the diagram: Upper outer layer 1, upper barrier layer 2, upper functional layer 3, lower outer layer 4, lower barrier layer 5, lower inner layer 6, lower functional layer 7. Detailed Implementation
[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.
[0022] according to Figure 1 As shown, this utility model is a high-barrier stitched packaging bag, which includes an upper film and a lower film. The ends of the upper film and the lower film are heat-sealed and closed to form a bag body.
[0023] The upper film body includes an upper outer layer 1, an upper barrier layer 2, and an upper functional layer 3 arranged sequentially from the outside of the bag body to the inside of the bag body; the lower film body includes a lower outer layer 4, a lower barrier layer 5, a lower inner layer 6, and a lower functional layer 7 arranged sequentially from the outside of the bag body to the inside of the bag body.
[0024] Both the upper functional layer 3 and the lower functional layer 7 are polyethylene or polypropylene films containing desiccant.
[0025] As a preferred embodiment of the above technical solution, both the upper functional layer 3 and the lower functional layer 7 are blended film layers formed by blending desiccant particles and polyethylene. Specifically, both the upper and lower functional layers adopt the desiccant functional layer disclosed in patent CN201510016793.0.
[0026] As a preferred embodiment of the above technical solution, the thickness of both the upper functional layer 3 and the lower functional layer 7 is 25-80 μm.
[0027] As a preferred embodiment of the above technical solution, both the upper outer layer 1 and the lower outer layer 4 are made of nylon.
[0028] As a preferred embodiment of the above technical solution, the thickness of both the upper outer layer 1 and the lower outer layer 4 is 40-100 μm.
[0029] As a preferred embodiment of the above technical solution, both the upper barrier layer 2 and the lower barrier layer 5 are made of aluminum foil.
[0030] As a preferred embodiment of the above technical solution, the thickness of both the upper barrier layer 2 and the lower barrier layer 5 is 25-60 μm.
[0031] As a preferred embodiment of the above technical solution, the lower inner layer 6 is made of nylon, and the thickness of the lower inner layer 6 is 15-40 μm.
[0032] Example:
[0033] A high-barrier stitched packaging bag includes an upper film and a lower film, the ends of which are heat-sealed and joined to form a bag body. The upper film includes an upper outer layer 1, an upper barrier layer 2, and an upper functional layer 3, arranged sequentially from the outside of the bag body to the inside. The lower film includes a lower outer layer 4, a lower barrier layer 5, a lower inner layer 6, and a lower functional layer 7, arranged sequentially from the outside of the bag body to the inside. The upper functional layer 3 and the lower functional layer 7 are both blended film layers containing desiccant particles and polyethylene. The thickness of the upper functional layer 3 and the lower functional layer 7 is 40 μm. The upper outer layer 1 and the lower outer layer 4 are both made of nylon. The thickness of the upper outer layer 1 and the lower outer layer 4 is 65 μm. The upper barrier layer 2 and the lower barrier layer 5 are both made of aluminum foil. The thickness of the upper barrier layer 2 and the lower barrier layer 5 is 45 μm. The lower inner layer 6 is made of nylon and has a thickness of 25 μm.
[0034] The barrier performance of the packaging bags prepared in the examples was tested. The oxygen permeability was 0.3 cc / ㎡·24h and the water permeability was 0.2 g / ㎡·24h, which can effectively meet the barrier requirements. At the same time, the inner layer of the packaging bags prepared in the examples adopts an upper functional layer and a lower functional layer containing desiccant. The upper functional layer and the lower functional layer formed by incorporating desiccant into polyethylene film are equivalent to the film layer surrounding the inner cavity of the bag containing desiccant, which can effectively improve the shelf life of the product.
[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A high-barrier stitched packaging bag, characterized in that, It includes an upper film and a lower film, the ends of which are heat-sealed and enclosed to form a bag; The upper membrane includes an upper outer layer (1), an upper barrier layer (2), and an upper functional layer (3) arranged sequentially from the outside of the bag to the inside of the bag; the lower membrane includes a lower outer layer (4), a lower barrier layer (5), a lower inner layer (6), and a lower functional layer (7) arranged sequentially from the outside of the bag to the inside of the bag. Both the upper functional layer (3) and the lower functional layer (7) are polyethylene films or polypropylene films containing desiccant.
2. The high-barrier stitched packaging bag according to claim 1, characterized in that, Both the upper functional layer (3) and the lower functional layer (7) are blended membrane layers formed by blending desiccant particles and polyethylene.
3. A high-barrier stitched packaging bag according to claim 2, characterized in that, The thickness of both the upper functional layer (3) and the lower functional layer (7) is 25-80 μm.
4. A high-barrier stitched packaging bag according to claim 1, characterized in that, Both the upper outer layer (1) and the lower outer layer (4) are made of nylon.
5. A high-barrier stitched packaging bag according to claim 4, characterized in that, The thickness of both the upper outer layer (1) and the lower outer layer (4) is 40-100 μm.
6. A high-barrier stitched packaging bag according to claim 1, characterized in that, Both the upper barrier layer (2) and the lower barrier layer (5) are made of aluminum foil.
7. A high-barrier stitched packaging bag according to claim 6, characterized in that, The thickness of both the upper barrier layer (2) and the lower barrier layer (5) is 25-60 μm.
8. A high-barrier stitched packaging bag according to claim 1, characterized in that, The lower inner layer (6) is made of nylon, and the thickness of the lower inner layer (6) is 15-40 μm.