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Preparation method of environmentally-friendly halogen-free cold-stamping molded composite aluminum foil material

A composite aluminum foil, cold stamping technology, applied in chemical instruments and methods, lamination, lamination devices and other directions, can solve the problems of poor barrier properties, poor packaging barrier properties, unsolved halogen and PVC additives hazards, etc., to achieve a safe storage environment, Good barrier properties and prolong shelf life

Inactive Publication Date: 2013-12-11
河南李烨包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two deficiencies in PVC materials: 1. PVC itself contains halogens, and some additives are added in the process of processing. Due to the influence of factors such as heat-sealed packaging, high storage temperature, and long storage time, PVC can release halogens. and other harmful gases, which may have adverse effects on the properties of the drug and personal safety; 2. The barrier properties of PVC materials to water and oxygen are quite poor, and it is not conducive to the long-term storage of drugs
[0003] In order to solve the problem of poor barrier properties of solid pharmaceutical packaging, several domestic companies have developed composite aluminum foil materials formed by cold stamping. PVC, aluminum foil, nylon, polyester and other materials are used to make composite aluminum foil materials, which solves the problem of insufficient barrier properties of packaging. problem, but the inner layer material is still made of PVC material, and the hazards of halogen and PVC additives have not been solved

Method used

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  • Preparation method of environmentally-friendly halogen-free cold-stamping molded composite aluminum foil material

Examples

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Effect test

Embodiment 1

[0015] An environment-friendly halogen-free composite aluminum foil material that can be formed by cold stamping. The structure and thickness from outside to inside are: 25μm nylon layer 1, 3μm adhesive layer 2, 50μm aluminum foil layer 3, 3μm conversion layer 4 and 15μm added overgrowth Adhesive modified polyethylene heat seal layer 5. Prepared according to the following process steps and process parameters: (1) Chemical conversion treatment of aluminum foil: equipped with chemical conversion agents of the following concentrations: tannic acid 8.2g / L, phosphoric acid 0.04g / L, F - 0.4g / L, Ti salt 0.05g / L, adjust with NaOH to keep the pH value = 4.9, first use ethyl acetate to clean the oil on the surface of the aluminum foil, and then convert the temperature to 30-60°C and spray for 5-50 seconds Perform chemical conversion treatment on the aluminum foil, and dry it at 120°C for 35 seconds using an online drying equipment; %), 35% metallocene polyethylene, 52% polyethylene, 1...

Embodiment 2

[0017] An environmentally friendly halogen-free cold stamping composite aluminum foil material, the structure and thickness from outside to inside are: 15-25μm nylon layer 1, 3μm polyurethane adhesive layer 2, 40-60μm aluminum foil layer 3, 0.2-3μm chemical A conversion layer 4 and a 10-20 μm thermoplastic polyurethane heat-sealing layer 5 . Prepared according to the following process steps and process parameters: (1) Chemical conversion treatment of aluminum foil: equipped with the following concentration of chemical conversion agent: ammonium fluotitanate 10g / L, phytic acid 16g / L, silica gel 30g / L, PVA (polymerization degree 1400) 50g / L, adjust with NaOH to keep the pH value = 5.3, first use ethyl acetate to clean the oil on the surface of the aluminum foil, and then use a spreader at 10mg / m 2 The coating amount of the aluminum foil is chemically converted, and it is dried with 120°C hot air circulating air for 35 seconds on the online drying equipment; the silane coupling a...

Embodiment 3

[0019] An environment-friendly halogen-free composite aluminum foil material that can be formed by cold stamping. The structure and thickness from outside to inside are: 25μm nylon layer 1, 3μm polyurethane adhesive layer 2, 50μm aluminum foil layer 3, 3μm chemical conversion layer 4 and 15μm thermoplastic Polyurethane heat seal layer5. Prepared according to the following process steps and process parameters: (1) Chemical conversion treatment of aluminum foil: equipped with the following concentration of chemical conversion agent: ammonium fluotitanate 10g / L, phytic acid 16g / L, silica gel 30g / L, PVA (polymerization degree 1400) 50g / L, adjust with NaOH to keep the pH value = 5.3, first use ethyl acetate to clean the oil on the surface of the aluminum foil, and then use a spreader at 10mg / m 2 The coating amount of the aluminum foil is chemically converted, and it is dried for 35 seconds using an online drying equipment with hot air circulation at 120°C; (2) Heat-sealing layer ma...

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Abstract

The invention discloses a preparation method of an environmentally-friendly halogen-free cold-stamping molded composite aluminum foil material. A technical scheme adopted in the invention is characterized in that the method comprises the following steps: 1, chemical conversion treatment of an aluminum foil: carrying out chemical treatment of the aluminum foil through adopting a tannic acid treatment process, a phytic acid coating and silane coupling agent promotion method or an organosilane process to form a conversion layer on the aluminum foil; 2, uniformly coating the conversion layer of the aluminum foil with a heat sealing layer material by adopting a hot pressing technology; 3, uniformly coating the aluminum foil surface of a composite material prepared in step 2 with a special adhesive for polyurethane aluminum foil, and compounding with a nylon layer after a solvent volatilizes to prepare a composite aluminum foil material; and 4, carrying out heat treatment of the prepared composite aluminum foil material in a 60-80DEG C drying room for 12-24h, cutting, examining and warehousing. The composite aluminum foil material prepared in the invention has the advantages of halogen-free nontoxic components, good barrier property and long shelf life, and is very suitable for solid medicinal packaging because of its comprehensive properties.

Description

technical field [0001] The invention relates to a preparation method of a medicinal aluminum foil material, in particular to a preparation method of an environment-friendly halogen-free cold-stamping composite aluminum foil material, which is used to solve the harm of halogen existing in the existing medicinal aluminum foil due to the PVC material. Background technique [0002] In the current market of solid pharmaceutical packaging, blister packaging formed of PVC and PTP aluminum foil materials occupies a relatively large market share. Capsules, tablets, etc. packaged in this material provide users with quantitative packaging, which is convenient to take and use. After the required drug unit is taken out, it does not affect the preservation of other drug units in the same package. However, there are two deficiencies in PVC materials: 1. PVC itself contains halogens, and some additives are added in the process of processing. Due to the influence of factors such as heat-seal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/12B32B37/00B32B15/085B32B15/088B32B15/08B32B15/20B65D65/40
Inventor 李利民张志勇原守法
Owner 河南李烨包装科技有限公司
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