Hot belt forming composite aluminum hard sheet

A technology of compounding aluminum and hard sheets, applied in the field of pharmaceutical packaging materials, can solve the problems of large loss of rolling equipment, affecting normal use, increasing production costs, etc., to improve rolling stability, improve warpage, and improve impact strength. Effect

Inactive Publication Date: 2015-04-22
宁波龙安包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum foil produced by 3003 alloy has good punching performance, but because the content of Mn element in the alloy is too high, the grains are easy to grow during homogenization annealing, and the surface is inevitable when it is rolled to the thickness of the finished product. Coarse grain stripes will appear, affecting normal use
On the other hand, due to the characteristics of the 3003 alloy itself, the strength of the material is high, and the loss of rolling equipment and punching equipment is relatively large. At the same time, a large amount of copper and manganese metals need to be added, which increases the production cost of the enterprise.

Method used

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  • Hot belt forming composite aluminum hard sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A composite aluminum hard sheet formed by hot strips includes a PET layer 1, an aluminum foil layer 2 and a heat-sealing adhesive layer 3 arranged in sequence, and a glue layer 4 is arranged between the PET layer and the aluminum foil layer, and the glue layer is glued The density is 4.9g / cm 3 , the thickness of the PET layer is 30 μm, the thickness of the aluminum foil layer is 60 μm, and the total thickness of the hot-band forming composite aluminum hard sheet is 97.5 μm.

[0049] Wherein, the PET alloy material of the PET layer is made by the following method:

[0050] Dry PET at 140°C for 3.5 hours, PBT at 135°C for 4 hours, and flame retardant at 83°C for 35 minutes, ready to use;

[0051] Weigh the dried PBT and PET according to the weight ratio, and after mixing evenly, add the plasticizer, lubricant, antioxidant and stabilizer according to the weight ratio, and then add them into the high-speed mixer to fully Mix for 15 minutes; the weight ratio is: PBT: 20%, ...

Embodiment 2

[0059] A composite aluminum hard sheet formed by hot strips includes a PET layer 1, an aluminum foil layer 2 and a heat-sealing adhesive layer 3 arranged in sequence, and a glue layer 4 is arranged between the PET layer and the aluminum foil layer, and the glue layer is glued The density is 5.0g / cm 3 , the thickness of the PET layer is 25 μm, the thickness of the aluminum foil layer is 65 μm, and the total thickness of the hot-band forming composite aluminum hard sheet is 97 μm.

[0060] Wherein, the PET alloy material of the PET layer is made by the following method:

[0061] Dry PET at 130°C for 4 hours, PBT at 130°C for 5 hours, and flame retardant at 80°C for 45 minutes before use;

[0062] Weigh the dried PBT and PET according to the weight ratio, and after mixing evenly, add the plasticizer, lubricant, antioxidant and stabilizer according to the weight ratio, and then add them into the high-speed mixer to fully Mix for 20 minutes; the weight ratio is: PBT: 30%, PET: 50...

Embodiment 3

[0070] A composite aluminum hard sheet formed by hot strips includes a PET layer 1, an aluminum foil layer 2 and a heat-sealing adhesive layer 3 arranged in sequence, and a glue layer 4 is arranged between the PET layer and the aluminum foil layer, and the glue layer is glued The density is 4.8g / cm 3 , the thickness of the PET layer is 35 μm, the thickness of the aluminum foil layer is 55 μm, and the total thickness of the hot-band forming composite aluminum hard sheet is 98 μm.

[0071] Wherein, the PET alloy material of the PET layer is made by the following method:

[0072] Dry PET at 150°C for 3 hours, PBT at 140°C for 3 hours, and flame retardant at 85°C for 30 minutes, ready to use;

[0073] Weigh the dried PBT and PET according to the weight ratio, and after mixing evenly, add the plasticizer, lubricant, antioxidant and stabilizer according to the weight ratio, and then add them into the high-speed mixer to fully Mix for 10 minutes; the weight ratio is: PBT: 15%, PET:...

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Abstract

The invention provides a hot belt forming composite aluminum hard sheet, and belongs to the technical field of officinal packaging materials. The hot belt forming composite aluminum hard sheet comprises a PET layer, an aluminum foil layer and a heat-seal adhesive layer, wherein the PET layer, the aluminum foil layer and the heat-seal adhesive layer are sequentially arranged. A glue layer is arranged between the PET layer and the aluminum foil layer, the density of glue in the glue layer is 4.8-5.0 g/cm<3>, the thickness of the PET layer is 25-35 micrometers, the thickness of the aluminum foil layer is 55-65 micrometers, and the total thickness of the hot belt forming composite aluminum hard sheet is 97-98 micrometers. According to the hot belt forming composite aluminum hard sheet, a PET alloy material which is reasonable in compatibility and reinforced by glass fibers is adopted as the PET layer, an aluminum foil material reasonable in compatibility is used as the aluminum foil layer, adhesive reasonable in compatibility is used as the heat-seal adhesive layer, and after multiple layers of transparent films are composited, the composite aluminum hard sheet is still transparent in overall effect, high in steam and oxygen barrier property, more symmetrical in structure, and capable of effectively improving warping and other phenomena possibly occurring in the using process and effectively prolonging the service life.

Description

technical field [0001] The invention belongs to the technical field of pharmaceutical packaging materials, and in particular relates to a composite aluminum hard sheet formed by heating. Background technique [0002] Most of the existing pharmaceutical packaging material products are composite hard sheet structures, including: PVC, PVC / PVDC, PVC / PE, PVC / ACLAR and other structural products. It has been found through use that these existing composite materials often only have the disadvantage of single barrier performance to water vapor or oxygen. In addition, the material properties of existing pharmaceutical packaging materials are average, such as aluminum foil in pharmaceutical packaging materials generally use 3003 alloy. The aluminum foil produced by 3003 alloy has good punching performance, but because the content of Mn element in the alloy is too high, the grains are easy to grow during homogenization annealing, and the surface is inevitable when it is rolled to the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/09B32B15/20B32B27/18B32B27/22B32B7/12C08L67/02C08K13/06C08K9/06C08K7/14C08K5/132C09J127/06C09J167/02C09J175/04C09J169/00C09J167/00C22C21/00
CPCB32B15/09B32B7/12B32B15/20B32B27/18B32B27/22C08K5/132C08K7/14C08K9/06C08K13/06C08L67/02C09J127/06C09J167/00C09J167/02C09J169/00C09J175/04C22C21/00
Inventor 吴奕
Owner 宁波龙安包装科技有限公司
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