High-barrier medicinal packaging composite hard sheet

Abstract

The utility model relates to the field of high-barrier medicines, and discloses a high-barrier medicinal packaging composite hard sheet which comprises a base layer, barrier layers and a heat sealing layer, the two sides of the base layer are connected with the barrier layers in a hot melting mode, and the heat sealing layer is coated on the side, away from the base layer, of each barrier layer. The utility model provides a high-barrier composite hard sheet for medicinal packaging, which aims at solving the problem that an aluminum foil needs to be subjected to punch forming operation, but the aluminum foil with the thickness of 50-80mm is generally adopted, and the aluminum material is poor in toughness, not resistant to bending and easy to break in the punching and bending process, so that the high-barrier composite hard sheet for the medicinal packaging aims at providing the high-barrier composite hard sheet for the medicinal packaging. The base layer is made of the latticed polyethylene glycol terephthalate and polyvinyl chloride composite material, the latticed structure serving as the base layer is not prone to breakage and convenient to punch and bend, in addition, the light shielding layer is additionally arranged in the composite hard sheet, and light shielding is necessary for drugs needing light shielding.

Description

TECHNICAL FIELD

[0001] The utility model relates to high barrier medicine field, concretely is a kind of high barrier medicine packing composite hard sheet. BACKGROUND

[0002] High barrier medicine packing composite hard sheet is a kind of multilayer composite material specially used for medicine packaging, aims at providing excellent protection for medicine, prevent external factors (such as oxygen, water vapor, light and microorganism etc.) from affecting medicine quality, once water vapor intrudes into medicine packaging interior, it can make medicine damp, caking, decomposition, seriously damage the original quality of medicine, light, whether it is ultraviolet in sunlight or light in other artificial light source, can penetrate some ordinary packaging, decompose effective component in medicine, reduce drug efficacy.

[0003] Existing high barrier packaging usually takes aluminum foil as barrier material, when packaging medicine, aluminum foil needs to be punched and formed, and it is suitable for the packaging of different medicines, so 50-80mm thick aluminum foil is generally used, however, aluminum has poor toughness and is not resistant to bending, and it is easy to break during punching and bending, once aluminum foil breaks, its original high barrier performance will be lost, therefore, we provide a kind of high barrier medicine packing composite hard sheet. UTILITY MODEL CONTENT

[0004] (I) technical problem solved

[0005] In view of the deficiencies in the prior art, the utility model provides a kind of high barrier medicine packing composite hard sheet, solves the above-mentioned problems.

[0006] (II) technical scheme

[0007] To achieve the above-mentioned purposes, the utility model provides the following technical scheme: a kind of high barrier medicine packing composite hard sheet, including base layer, barrier layer and heat sealing layer, the base layer both sides are connected barrier layer with heat fusion, barrier layer is coated with heat sealing layer on the side away from base layer, the base layer includes base layer one and base layer two, a group of parallel base layer one and a group of parallel base layer two are perpendicular to each other and are staggered with heat fusion and are in grid shape, the base layer further includes base layer filling one and base layer filling two, base layer filling one is filled between base layer one and base layer two with heat fusion, the side of base layer one and base layer two away from base layer filling one is filled with base layer filling two with heat fusion.

[0008] Preferably, the barrier layer includes oxygen barrier layer one, adhesive one and light shielding layer, oxygen barrier layer one is formed with heat fusion on one side of base layer filling one, and adhesive one is coated on the other side of oxygen barrier layer one, and light shielding layer is glued on the other side of adhesive one.

[0009] Preferably, the barrier layer further comprises a water vapor barrier layer, a second adhesive and a second oxygen barrier layer. One side of the water vapor barrier layer is hot-melt-formed with the second base filler, and the other side of the water vapor barrier layer is coated with the second adhesive, and the other side of the second adhesive is glued to the second oxygen barrier layer.

[0010] Preferably, the heat sealing layer includes heat sealing layer 1 and heat sealing layer 2, heat sealing layer 1 is coated on the side of the light shielding layer facing away from adhesive 1, and heat sealing layer 2 is coated on the side of the oxygen barrier layer 2 facing away from adhesive 2.

[0011] (3) Beneficial effects

[0012] Compared with the prior art, the present invention provides a high-barrier composite hard sheet for pharmaceutical packaging, which has the following beneficial effects:

[0013] 1. The high-barrier pharmaceutical packaging composite sheet has a base layer made of a grid-like composite material of polyethylene terephthalate and polyvinyl chloride. The grid structure consists of multiple interconnected units. When subjected to external forces, the connection points between these units can rotate and deform relative to each other, making it less likely to break and easier to punch and bend.

[0014] 2. This high-barrier pharmaceutical packaging composite hard sheet has a light-shielding layer added inside. For drugs that need to be protected from light, light-shielding is necessary. The light-shielding layer is made of aluminized polyester film, which has the light-shielding performance of aluminum foil and is lighter and more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is an exploded schematic diagram of the structure of the utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the structure of the base layer, barrier layer and heat sealing layer of the utility model;

[0018] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the figure.

[0019] In the figure: 1. Base layer 1; 2. Base layer filling 1; 3. Oxygen barrier layer 1; 4. Adhesive 1; 5. Light-shielding layer; 6. Heat seal layer 1; 7. Water vapor barrier layer; 8. Heat seal layer 2; 9. Oxygen barrier layer 2; 10. Base layer filling 2; 11. Adhesive 2; 12. Base layer 2. DETAILED DESCRIPTION

[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] Please refer to Figures 1-4 A high-barrier medicinal packaging composite hard sheet comprises a base layer, a barrier layer and a heat-sealing layer, the base layer is connected with the barrier layer by heat fusion on both sides, and the barrier layer is coated with the heat-sealing layer on one side away from the base layer. The base layer comprises base layer one 1 and base layer two 12, and a group of parallel base layer one 1 and a group of parallel base layer two 12 are perpendicular to each other, are spaced apart and are staggered by heat fusion to form a grid shape. The base layer one 1 is a fibrous polyvinyl chloride material, and the base layer two 12 is a fibrous polyethylene terephthalate material, which has good mechanical properties and provides strength and hardness support for the composite hard sheet. The base layer further comprises base layer filler one 2 and base layer filler two 10. The base layer filler one 2 is filled by heat fusion between the base layer one 1 and the base layer two 12, and the base layer one 1 and the base layer two 12 are filled with the base layer filler two 10 by heat fusion on one side away from the base layer filler one 2. The base layer filler one 2 is a colloidal polyethylene terephthalate material, and the base layer filler two 10 is a colloidal polyvinyl chloride material, which is used to fill the gap between the base layer one 1 and the base layer filler one 2. When the same material solidifies, the intermolecular connection is more compact, so that the base layer filler one 2, the base layer filler two 10, the base layer one 1 and the base layer two 12 are tightly connected.

[0022] Further, the barrier layer comprises an oxygen barrier layer one 3, an adhesive one 4 and a light-shielding layer 5. One side of the oxygen barrier layer one 3 is formed by heat fusion with the base layer filler one 2, the other side of the oxygen barrier layer one 3 is coated with the adhesive one 4, the other side of the adhesive one 4 is glued with the light-shielding layer 5, the oxygen barrier layer one 3 is a polyvinyl alcohol material, which has excellent oxygen barrier properties and is commonly used in food packaging, can effectively prolong the shelf life, the adhesive one 4 is an adhesive of polyolefin material, which is strong, water-resistant and relatively low-cost, and the light-shielding layer 5 is an aluminum-plated polyester film material, which is a thin aluminum film plated on the surface of a polyester film and is commonly used in the packaging and preservation of food and medicine, and can also be used in a light-reflecting curtain, etc.

[0023] Furthermore, the barrier layer also includes a water vapor barrier layer 7, an adhesive 11 and an oxygen barrier layer 9. One side of the water vapor barrier layer 7 is hot-melt-formed with the base filler 10, and the other side of the water vapor barrier layer 7 is coated with an adhesive 11. The other side of the adhesive 11 is glued to the oxygen barrier layer 9. The water vapor barrier layer 7 is made of polyvinylidene chloride material and has a good barrier effect on water vapor and oxygen. The adhesive 11 is an adhesive made of polyolefin material, which is strong, water-resistant and relatively low-cost. The oxygen barrier layer 9 is made of polytetrafluoroethylene material and is used to block moisture and gas, especially in an environment that requires resistance to high temperature and chemical corrosion.

[0024] Furthermore, the heat-sealing layer includes a heat-sealing layer 1 6 and a heat-sealing layer 2 8. The heat-sealing layer 1 6 is coated on the side of the light-shielding layer 5 facing away from the adhesive 1 4, and the heat-sealing layer 2 8 is coated on the side of the oxygen barrier layer 2 9 facing away from the adhesive 2 11. The heat-sealing layer 1 6 is made of a polyurethane material, which provides excellent flexibility and chemical resistance and is suitable for certain special applications. The heat-sealing layer 2 8 is made of a polyethylene material and is used to seal the composite hard sheet with other packaging materials (such as aluminum foil, plastic film, etc.) by heating during the packaging process to ensure the sealing of the packaging.

[0025] Working principle: Base layer 1 and base layer 2 12 are interlaced and woven into a mesh structure, base layer filling 12 and base layer filling 2 10 are filled in the gap between base layer 1 and base layer 2 12, and before base layer filling 12 and base layer filling 2 10 solidify, oxygen barrier layer 13 and water vapor barrier layer 7 are bonded to base layer filling 12 and base layer filling 2 10, adhesive 14 is applied on oxygen barrier layer 13, and light-shielding layer 5 is bonded thereto before adhesive 14 solidifies, and heat-sealing layer 16 is applied on the other side of light-shielding layer 5, and adhesive 2 11 is applied on water vapor barrier layer 7 at the same time, and oxygen barrier layer 2 9 is bonded thereto before adhesive 2 11 solidifies, and adhesive 2 11 is applied on the other side of oxygen barrier layer 2 9, and the composite hard sheet is dried.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-barrier pharmaceutical packaging composite rigid sheet comprising a base layer, a barrier layer and a heat-seal layer, characterized in that: The barrier layer is hot melt connected on both sides of the base layer, and the side of the barrier layer away from the base layer is coated with a heat seal layer. The base layer includes base layer one (1) and base layer two (12). A set of parallel base layer one (1) and a set of parallel base layer two (12) are vertically spaced and staggered to form a grid shape. The base layer also includes base layer filler one (2) and base layer filler two (10). Base layer filler one (2) is hot melt filled between base layer one (1) and base layer two (12). Base layer one (1) and base layer two (12) are hot melt filled with base layer filler two (10) on the side away from base layer filler one (2).

2. A high barrier pharmaceutical packaging composite rigid sheet as claimed in claim 1, wherein: The barrier layer includes oxygen barrier layer one (3), adhesive one (4), and light shielding layer (5). Oxygen barrier layer one (3) is hot melt formed on one side of base layer filler one (2). Adhesive one (4) is coated on the other side of oxygen barrier layer one (3). Light shielding layer (5) is glued to the other side of adhesive one (4).

3. A high barrier pharmaceutical packaging composite rigid sheet according to claim 2, characterized in that: The barrier layer also includes water vapor barrier layer (7), adhesive two (11), and oxygen barrier layer two (9). Water vapor barrier layer (7) is hot melt formed on one side of base layer filler two (10). Adhesive two (11) is coated on the other side of water vapor barrier layer (7). Oxygen barrier layer two (9) is glued to the other side of adhesive two (11).

4. A high barrier pharmaceutical packaging composite rigid sheet as claimed in claim 3, wherein: The heat seal layer includes heat seal layer one (6) and heat seal layer two (8). Heat seal layer one (6) is coated on the side of light shielding layer (5) away from adhesive one (4). Heat seal layer two (8) is coated on the side of oxygen barrier layer two (9) away from adhesive two (11).

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