A contact lens pp container easy-to-peel closure material
Patent Information
- Application Number
- CN202521407628.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-07-07
AI Technical Summary
[0005]为此，本实用新型提供一种隐形眼镜PP容器易揭封口材料，用以克服现有技术中隐形眼镜PP容器开启不便、材料兼容性差的问题
[0016]与现有技术相比，本实用新型的有益效果在于：本实用新型材料采用特殊的复合结构设计，能够有效保护隐形眼镜免受外界污染和湿气侵蚀。
Smart Images
Figure CN224898308U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging technology, and in particular to an easy-open sealing material for PP containers for contact lenses. Background Technology
[0002] Contact lenses, also called corneal contact lenses or corneal contact glasses, are lenses worn on the cornea of the eye to correct vision or protect the eyes. Colored contact lenses are a type of contact lens. Based on the hardness of the material, they are classified into three types: rigid, semi-rigid, and soft. Contact lenses not only bring great convenience to people with refractive errors such as myopia, hyperopia, and astigmatism in terms of appearance and ease of use, but also provide a wide field of vision and realistic vision. Furthermore, they play a special role in controlling the progression of myopia and astigmatism in adolescents and treating certain eye diseases.
[0003] With the development of technology, PP containers for contact lenses have become the mainstream packaging form for contact lenses. Their sealing design directly affects the product's airtightness, hygiene, and user experience. Traditional contact lens containers often use aluminum foil or composite film heat sealing processes, which can ensure a sealing effect, but have problems such as inconvenience in opening and poor material compatibility.
[0004] While existing improved technologies partially enhance ease of opening, they may sacrifice sealing performance or lead to weakened or failed seals during sterilization. Therefore, there is an urgent need to develop a novel sealing material that combines high sealing performance, ease of opening, and compatibility with PP substrates to meet both the hygiene and safety requirements of contact lens packaging and the user experience. Utility Model Content
[0005] Therefore, this utility model provides an easy-open sealing material for contact lens PP containers to overcome the problems of inconvenient opening and poor material compatibility of existing contact lens PP containers.
[0006] To achieve the above objectives, this utility model provides an easy-open sealing material for contact lens PP containers, comprising: It has a composite film structure arranged sequentially from the outside to the inside, wherein the first layer is a printing layer, the second layer is a barrier layer, and the third layer is a heat-sealing layer; the layers are connected by adhesive. The substrate is made of biaxially oriented polyester or biaxially oriented polypropylene. The barrier layer is made of aluminum foil; The heat-sealing layer is made of polyethylene or polypropylene.
[0007] Furthermore, when the substrate material is biaxially oriented polyester, its thickness is 12.0 μm; when the substrate material is biaxially oriented polypropylene, its thickness is 18.0 μm.
[0008] Furthermore, the thickness of the barrier layer is 50.0 μm.
[0009] Furthermore, the thickness of the heat-sealing layer is 50.0 μm.
[0010] Furthermore, a reinforcing layer is provided between the barrier layer and the heat-sealing layer, and the reinforcing layer is made of biaxially oriented polyamide or biaxially oriented polyester.
[0011] Furthermore, when the reinforcing layer is biaxially oriented polyamide, its thickness is 15.0 μm; when the reinforcing layer is biaxially oriented polyester, its thickness is 12.0 μm.
[0012] Furthermore, the ink is printed on the side of the substrate near the barrier layer.
[0013] Furthermore, the adhesive is a polyurethane adhesive.
[0014] Furthermore, the thickness of the adhesive between each layer is 1.5 μm-2.0 μm.
[0015] Furthermore, the outer surface of the composite membrane structure is coated with matte varnish.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: the material of this utility model adopts a special composite structure design, which can effectively protect contact lenses from external pollution and moisture erosion.
[0017] The thickness of the substrate layer provides a relatively uniform and stable adhesion surface for the ink at the microscopic level. When ink is printed on the side of the substrate layer closest to the barrier layer, this thickness ensures that the ink is evenly distributed on the substrate layer, preventing uneven ink penetration and blurred pattern edges caused by an excessively thin substrate layer. The aluminum foil barrier layer thickness, while ensuring barrier performance, minimizes material costs, reduces packaging weight and volume, and lowers transportation costs. The heat-sealing layer uses medical-grade polyethylene or polypropylene, both materials with excellent heat-sealing properties, forming a strong and sealed connection when heat-sealed with the PP container for contact lenses. The reinforcing layer significantly improves the material's tear resistance. The heat-sealing layer thickness strikes a balance between heat-sealing strength and ease of opening, allowing consumers to easily and conveniently open the seal without compromising the packaging's sealing performance.
[0018] Polyurethane adhesives possess excellent bonding and chemical resistance, enabling them to firmly bond the various layers together and resist the corrosive effects of chemicals that may be present in contact lens care solutions, ensuring the long-term stability of the composite film. The adhesive thickness between each layer ensures that a uniform and strong bond is formed, avoiding both excessive thinness leading to weak adhesion and excessive thickness increasing costs or affecting the flexibility of the composite film.
[0019] Applying matte varnish to the outer surface of the printed layer gives the packaging a matte finish, reduces light reflection, makes the packaging look softer and more upscale, enhances the overall texture and visual effect of the product, and meets consumers' aesthetic needs for the product's appearance. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of an easy-open sealing material for a PP container for contact lenses, according to an embodiment of this utility model. 1. Printing substrate; 2. Barrier layer; 3. Reinforcing layer; 4. Heat-sealing layer. Detailed Implementation
[0021] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0022] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 the embodiments of 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 the embodiments of this utility model.
[0023] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0024] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 the embodiments of this utility model based on the specific circumstances.
[0025] This utility model discloses an easy-open sealing material for PP contact lens containers, used to solve the problem of... Please see Figure 1 A schematic diagram of the overall structure of an easy-open sealing material for a PP container for contact lenses according to an embodiment of this utility model; One embodiment of this utility model provides an easy-open sealing material for a contact lens PP container, comprising: It has a composite film structure arranged sequentially from the outside to the inside, wherein the first layer is the printing layer 1, the second layer is the barrier layer 2, and the third layer is the heat-sealing layer 4; the layers are connected by adhesive. The substrate 1 is made of biaxially oriented polyester or biaxially oriented polypropylene. The barrier layer 2 is made of aluminum foil; The heat-sealing layer 4 is made of polyethylene or polypropylene. The composite structure is tightly bonded together with adhesive to form a complete protective system, ensuring both the strength of the seal and ease of removal.
[0026] Specifically, when the substrate 1 is made of biaxially oriented polyester, its thickness is 12.0 μm; when the substrate 1 is made of biaxially oriented polypropylene, its thickness is 18.0 μm. This thickness is sufficient to support clear printed patterns without affecting the overall flexibility of the material.
[0027] Specifically, the barrier layer 2 has a thickness of 50.0 μm. This thickness effectively blocks the penetration of external gases and moisture while maintaining sufficient mechanical strength.
[0028] Specifically, the heat-sealing layer 4 has a thickness of 50.0 μm. This thickness ensures a strong heat-sealed bond with the PP container body while maintaining appropriate peel strength, making the seal both reliable and easy to open.
[0029] Specifically, a reinforcing layer 3 is provided between the barrier layer 2 and the heat-sealing layer 4, and the reinforcing layer 3 is made of biaxially oriented polyamide or biaxially oriented polyester.
[0030] Specifically, when the reinforcing layer 3 is biaxially oriented polyamide, its thickness is 15.0 μm; when the reinforcing layer 3 is biaxially oriented polyester, its thickness is 12.0 μm. This thickness ensures that the biaxially oriented polyamide material can fully utilize its excellent mechanical properties, such as good flexibility and tensile strength, making the printed layer less prone to cracking or deformation during packaging, effectively protecting the internal structure.
[0031] Specifically, the ink is printed on the side of the substrate 1 near the barrier layer 2.
Claims
1. An easy-open sealing material for contact lens PP containers, characterized in that, It includes: It has a composite film structure arranged sequentially from the outside to the inside, wherein the first layer is a printing layer, the second layer is a barrier layer, and the third layer is a heat-sealing layer; the layers are connected by adhesive. The substrate is made of biaxially oriented polyester or biaxially oriented polypropylene. The barrier layer is made of aluminum foil; The heat-sealing layer is made of polyethylene or polypropylene; A reinforcing layer is provided between the barrier layer and the heat-sealing layer, and the reinforcing layer is made of biaxially oriented polyamide or biaxially oriented polyester.
2. The easy-open sealing material for a contact lens PP container according to claim 1, characterized in that, When the substrate material is biaxially oriented polyester, its thickness is 12.0 μm; when the substrate material is biaxially oriented polypropylene, its thickness is 18.0 μm.
3. The easy-open sealing material for a contact lens PP container according to claim 2, characterized in that, The thickness of the barrier layer is 50.0 μm.
4. The easy-open sealing material for a contact lens PP container according to claim 3, characterized in that, The thickness of the heat-sealing layer is 50.0 μm.
5. The easy-open sealing material for a contact lens PP container according to claim 4, characterized in that, When the reinforcing layer is biaxially oriented polyamide, its thickness is 15.0 μm; when the reinforcing layer is biaxially oriented polyester, its thickness is 12.0 μm.
6. The easy-open sealing material for a contact lens PP container according to claim 5, characterized in that, The ink is printed on the side of the substrate near the barrier layer.
7. The easy-open sealing material for a contact lens PP container according to claim 6, characterized in that, The adhesive is a polyurethane adhesive.
8. The easy-open sealing material for a contact lens PP container according to claim 7, characterized in that, The thickness of the adhesive between each layer is 1.5μm-2.0μm.
9. The easy-open sealing material for a contact lens PP container according to claim 8, characterized in that, The outer surface of the composite membrane structure is coated with matte varnish.