High-temperature-resistant sterilizing aluminum-plastic composite sheet and hose

Abstract

The utility model relates to a high-temperature-resistant sterilizing aluminum-plastic composite sheet and a hose, and the aluminum-plastic composite sheet is formed by compounding five layers of films and four layers of adhesive layers, comprising an outer polyolefin film, a high-temperature-resistant bonding layer A, a polyester film, a high-temperature-resistant bonding layer B, a polyamide film, a high-temperature-resistant bonding layer C, a barrier layer, a high-temperature-resistant bonding layer D and an inner polyolefin film which are sequentially combined from outside to inside. The high-temperature-resistant sterilization aluminum-plastic composite sheet and the hose are reasonable in design, the aluminum-plastic composite sheet and the hose adopting the structure can achieve the sterilization condition that the aluminum-plastic composite sheet and the hose can resist sterilization within 1 hour between 100 DEG C and 121 DEG C, have no defects of layering and deformation after sterilization, and are wide in application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum-plastic packaging materials, in particular to a high-temperature sterilization-resistant aluminum-plastic composite sheet and a hose. Background Art

[0002] With the rapid development of modern industrial technology, more and more aluminum-plastic products have been widely used in various fields of people's lives. As one of the important raw materials for packaging, aluminum-plastic packaging materials have their unique advantages and bring convenience to people.

[0003] At present, the layer structures of aluminum-plastic composite sheets and composite hoses in commonly used aluminum-plastic packaging materials basically adopt the processing technology of extrusion composite structure. The sheets and hoses made by the processing technology of extrusion composite structure cannot withstand high-temperature sterilization conditions above 100°C.

[0004] However, more and more food and skin care products on the market require sterilization conditions greater than 100°C. Therefore, it is necessary to develop a composite sheet and hose that can withstand sterilization conditions above 100°C.

[0005] The utility model provides a high-temperature sterilization-resistant aluminum-plastic composite sheet and hose, which can be suitable for packaging products whose contents require high-temperature sterilization within 100°C to 121°C for one hour. Utility Model Content

[0006] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of the utility model is to provide a high-temperature sterilization-resistant aluminum-plastic composite sheet and hose, which is reasonably designed so that the aluminum-plastic composite sheet and hose can withstand sterilization conditions between 100°C and 121°C for less than 1 hour, and there is no stratification or deformation defects after sterilization, and it has broad application prospects in the field of aluminum-plastic packaging materials.

[0007] Technical solution: The first aspect of the utility model is to provide a high-temperature sterilization resistant aluminum-plastic composite sheet, which is composited by 5 layers of film and 4 layers of adhesive layers, including an outer layer of polyolefin film, a high-temperature resistant adhesive layer A, a polyester film, a high-temperature resistant adhesive layer B, a polyamide film, a high-temperature resistant adhesive layer C, a barrier layer, a high-temperature resistant adhesive layer D, and an inner layer of polyolefin film, which are sequentially combined from the outside to the inside.

[0008] The aluminum-plastic composite sheet of the utility model is reasonably designed and is composed of five layers of films, which include an outer polyolefin film, a polyester film, a polyamide film, a barrier layer, and an inner polyolefin film from the outside to the inside. The layers are bonded together using a high-temperature resistant bonding layer using a dry composite processing technology.

[0009] Among them, the outer polyolefin film is the surface layer, which can be used for heat sealing and printing; the polyester film is the middle layer, which can increase the stiffness of the sheet, so that the sheet is not easily deformed after high-temperature sterilization; the polyamide film is the middle layer, which can increase the toughness of the sheet, and it is not easy to break and deform; the barrier layer is the middle layer, which has good barrier properties and can increase the barrier properties of the sheet; the inner polyolefin film is the inner layer, which serves as a heat sealing layer and protects the safety of the contents. The high-temperature resistant adhesive layer (high-temperature resistant adhesive layer AD) located between the outer polyolefin film, polyester film, polyamide film, barrier layer, and inner polyolefin film is used to bond and composite the layers of film and realize the high-temperature sterilization resistance of the overall sheet.

[0010] Furthermore, in the above-mentioned high-temperature sterilization-resistant aluminum-plastic composite sheet and hose, the outer polyolefin film is a heat-sealable high-density polyolefin film with a density greater than 0.94 g / cm3.

[0011] The outer layer polyolefin film is a heat-sealable high-density polyolefin film with a density greater than 0.94 g / cm3. The surface is heat-sealable and can be printed for decoration.

[0012] Furthermore, in the above-mentioned high-temperature sterilization-resistant aluminum-plastic composite sheet and hose, the inner layer polyolefin film is a heat-sealable high-density polyolefin film, and its density is greater than 0.94g / cm3.

[0013] The inner layer polyolefin film is also a heat-sealable high-density polyolefin film with a density greater than 0.94 g / cm3. The surface is heat-sealable and can protect the safety of the contents.

[0014] Furthermore, in the above-mentioned high temperature sterilization resistant aluminum-plastic composite sheet and hose, the barrier layer is made of aluminum foil material.

[0015] Aluminum foil material has good barrier properties and also has light-shielding properties.

[0016] Furthermore, in the above-mentioned high temperature sterilization resistant aluminum-plastic composite sheet and hose, the high temperature resistant adhesive layer A, the high temperature resistant adhesive layer B, the high temperature resistant adhesive layer C, and the high temperature resistant adhesive layer D are all made of high temperature resistant cooking adhesive.

[0017] Preferably, the high temperature cooking resistant adhesive can withstand high temperature sterilization requirements of 121°C for 1 hour, and the outer polyolefin film, polyester film, polyamide film, barrier layer, and inner polyolefin film are compounded into an aluminum-plastic composite sheet using the high temperature cooking resistant adhesive through a dry composite processing technology.

[0018] Furthermore, in the above-mentioned high-temperature sterilization-resistant aluminum-plastic composite sheet and hose, the inner surface of the outer polyolefin film is provided with a printed pattern.

[0019] The printed pattern is printed on the inner surface of the outer polyolefin film by a gravure printing machine. The outer polyolefin film has excellent fluidity and low gloss, has good bonding force to the printed pattern, and is conducive to printing and maintaining good color of the printed pattern.

[0020] The second aspect of the utility model provides a hose, which is made of the high-temperature-resistant sterilization aluminum-plastic composite sheet.

[0021] The beneficial effects of the utility model are as follows: the high-temperature sterilization-resistant aluminum-plastic composite sheet and hose described in the utility model have a reasonable structural design and are composited with multiple layers of films, including, from the outside to the inside, an outer layer of polyolefin film, a polyester film, a polyamide film, a barrier layer, and an inner layer of polyolefin film. The layers are bonded together using a high-temperature resistant adhesive layer using a dry composite processing technology. The high-temperature resistant adhesive layer can withstand high-temperature sterilization requirements of 121°C for 1 hour, meeting the sterilization conditions of food and skin care products currently on the market, and has broad application prospects in the field of aluminum-plastic packaging materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional schematic diagram of the high temperature sterilization resistant aluminum-plastic composite sheet and hose of the utility model;

[0023] In the figure: outer layer polyolefin film 1, high temperature resistant adhesive layer A2, polyester film 3, high temperature resistant adhesive layer B4, polyamide film 5, high temperature resistant adhesive layer C6, barrier layer 7, high temperature resistant adhesive layer D8, inner layer polyolefin film 9. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 With embodiment 1, embodiment 2, further illustrate the utility model.

[0025] Example 1

[0026] like Figure 1 As shown, the high temperature sterilization aluminum-plastic composite sheet and hose described in the utility model include 5 layers of film and 4 layers of adhesive layer, and the hose is made of the aluminum-plastic composite sheet. Among them, the 5 layers of film from outside to inside are respectively an outer polyolefin film 1, a polyester film 3, a polyamide film 5, a barrier layer 7, and an inner polyolefin film 9, and the 4 layers of adhesive layer from outside to inside are respectively a high temperature resistant adhesive layer A2, a high temperature resistant adhesive layer B4, a high temperature resistant adhesive layer C6, and a high temperature resistant adhesive layer D8.

[0027] Furthermore, the outer polyolefin film 1 is a surface layer, which can play the role of heat sealing and printing. The printed pattern can be printed on the inner surface of the outer polyolefin film 1 by a gravure printing machine. The outer polyolefin film 1 has excellent fluidity and low gloss, has good bonding force to the printed pattern, and is conducive to printing and maintaining the good color of the printed pattern.

[0028] Furthermore, the polyester film 3 is an intermediate layer, which can increase the stiffness of the sheet and the hose, so that the sheet and the hose are not easily deformed after high-temperature sterilization.

[0029] Furthermore, the polyamide film 5 is an intermediate layer, which can increase the toughness of the sheet and the hose, making them less likely to break and deform.

[0030] Furthermore, the barrier layer 7 is an intermediate layer and has good barrier properties, which can increase the barrier properties of the sheet and the hose.

[0031] Furthermore, the inner polyolefin film 9 is an inner layer, which functions as a heat-sealing layer and protects the safety of the contents.

[0032] Among them, the high temperature resistant adhesive layers (high temperature resistant adhesive layer A2, high temperature resistant adhesive layer B4, high temperature resistant adhesive layer C6, high temperature resistant adhesive layer D8) located between the outer polyolefin film 1, the polyester film 3, the polyamide film 5, the barrier layer 7, and the inner polyolefin film 9 all adopt high temperature resistant cooking adhesive, which can withstand high temperature sterilization requirements of 121°C to 1 hour. The outer polyolefin film 1, the polyester film 3, the polyamide film 5, the barrier layer 7, and the inner polyolefin film 9 are bonded together through a dry composite processing technology.

[0033] The manufacturing process of the high temperature sterilization resistant aluminum-plastic composite sheet is as follows:

[0034] Step 1: Using a gravure printing machine, print a printed pattern on the inner surface of the outer polyolefin film 1;

[0035] Step 2: Use dry laminating equipment to bond the outer polyolefin film 1 printed in step 1 to the polyester film 3 through a high temperature resistant cooking adhesive to form a high temperature resistant adhesive layer A2. The processing speed is generally controlled at 100±20m / min, the viscosity of the high temperature resistant cooking adhesive is controlled at 16-20 seconds, and the drying temperature is 50-110°C;

[0036] Step 3: Use dry laminating equipment to bond the semi-finished product obtained in step 2 to the polyamide film 5 through a high temperature resistant cooking adhesive to form a high temperature resistant bonding layer B4. The processing speed is generally controlled at 100±20m / min, the viscosity of the high temperature resistant cooking adhesive is controlled at 16-20 seconds, and the drying temperature is 50-110°C.

[0037] Step 4: Use dry laminating equipment to bond the semi-finished product obtained in step 3 to the barrier layer 7 through a high temperature resistant cooking adhesive to form a high temperature resistant bonding layer C6. The processing speed is generally controlled at 100±20m / min, the viscosity of the high temperature resistant cooking adhesive is controlled at 16-20 seconds, and the drying temperature is 50-110°C.

[0038] Step 5: Use dry laminating equipment to bond the semi-finished product obtained in step 4 to the inner polyolefin film 9 through a high temperature resistant cooking adhesive to form a high temperature resistant bonding layer D8. The processing speed is generally controlled at 100±20m / min, the viscosity of the high temperature resistant cooking adhesive is controlled at 16-20 seconds, and the drying temperature is 50-110°C.

[0039] Step 6: Place the sheet obtained by step 5 in a 50°C high temperature curing chamber for 72 to 96 hours to obtain the high temperature sterilization resistant aluminum-plastic composite sheet.

[0040] Example 2

[0041] Based on the structural basis of Example 1 above, Figure 1 shown.

[0042] The high temperature sterilization resistant aluminum-plastic composite sheet and hose described in the utility model, the outer polyolefin film 1 and the inner polyolefin film 9 are both made of heat-sealable high-density polyolefin films, and the density thereof is greater than 0.94 g / cm3.

[0043] Furthermore, the barrier layer 7 is made of aluminum foil material, which has good barrier properties and light-shielding properties.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A high temperature sterilization resistant aluminum-plastic composite sheet, characterized in that: The aluminum-plastic composite sheet is composed of five layers of films and four layers of adhesive, including an outer polyolefin film (1), a high temperature resistant adhesive layer A (2), a polyester film (3), a high temperature resistant adhesive layer B (4), a polyamide film (5), a high temperature resistant adhesive layer C (6), a barrier layer (7), a high temperature resistant adhesive layer D (8), and an inner polyolefin film (9), which are sequentially combined from the outside to the inside.

2. The high temperature sterilization resistant aluminum-plastic composite sheet according to claim 1, characterized in that: The outer layer polyolefin film (1) is a heat-sealable high-density polyolefin film, the density of which is greater than 0.94 g / cm3.

3. The high temperature sterilization resistant aluminum-plastic composite sheet according to claim 1, characterized in that: The inner layer polyolefin film (9) is a heat-sealable high-density polyolefin film, the density of which is greater than 0.94 g / cm3.

4. The high temperature sterilization resistant aluminum-plastic composite sheet according to claim 1, characterized in that: The barrier layer (7) is made of aluminum foil material.

5. The high temperature sterilization resistant aluminum-plastic composite sheet according to claim 1, characterized in that: The high temperature resistant adhesive layer A (2), the high temperature resistant adhesive layer B (4), the high temperature resistant adhesive layer C (6), and the high temperature resistant adhesive layer D (8) are all made of a high temperature resistant steaming adhesive.

6. The high temperature sterilization resistant aluminum-plastic composite sheet according to claim 1, characterized in that: The inner surface of the outer polyolefin film (1) is provided with a printed pattern.

7. A hose, characterized in that: The hose is made of the high temperature sterilization resistant aluminum-plastic composite sheet according to any one of claims 1 to 6.

Images