Water-based vc adhesive for medical packaging and preparation method thereof

An adhesive, water-based technology, applied in the field of chemistry, can solve problems such as high levels, and achieve the effects of low content of easy oxides, environmentally friendly raw materials, and a single formula

Active Publication Date: 2018-02-27
重庆中科力泰高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the patent with the publication number CN102746818A, only the content of easy oxides in the VC layer is 0.1-0.5mL, which may be too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation method of the water-based VC adhesive that is used for medical packaging, take anionic polyurethane emulsion, ethanol and wax emulsion that the volume fraction is 95% according to the following percentage by weight, anionic polyurethane emulsion 42.7%, ethanol 57%, wax emulsion 0.3% , and then stir and mix evenly to obtain a water-based VC adhesive for pharmaceutical packaging.

[0019] The water-based VC adhesive obtained in this example is coated on the aluminum foil which is a composite material composed of aluminum foil and PVC sheet, dried at 100°C to 110°C, and then hot-pressed at 160°C for 1s for compounding, and measured on an electronic tensile machine. The 180°peel strength is 12.70N / 15mm, and the easy oxide content is 0.05mL.

[0020] The anionic polyurethane emulsion used in this embodiment has a solid content of 22%-37% and a pH of 6.5-7.5, all of which can achieve the purpose of the invention. The anionic polyurethane emulsion prepared by ...

Embodiment 2

[0023] The preparation method of the water-based VC adhesive used for medical packaging, according to the following weight percentages, anionic polyurethane emulsion, ethanol and wax emulsion with a volume fraction of 95%, anionic polyurethane emulsion 33%, ethanol 65%, wax emulsion 2% , and then stir and mix evenly to obtain a water-based VC adhesive for pharmaceutical packaging.

[0024] The water-based VC adhesive obtained in this example is coated on the aluminum foil which is a composite material composed of aluminum foil and PVC sheet, dried at 100°C to 110°C, and then hot-pressed at 160°C for 1s for compounding, and measured on an electronic tensile machine. The 180°peel strength is 10.87N / 15mm, and the easy oxide content is 0.02mL.

[0025] The anionic polyurethane emulsion used in this embodiment has a solid content of 22%-37% and a pH of 6.5-7.5, all of which can achieve the purpose of the invention. The anionic polyurethane emulsion prepared by the preferred follow...

Embodiment 3

[0028] The preparation method of the water-based VC adhesive used for medical packaging is to take anionic polyurethane emulsion, ethanol and wax emulsion with a volume fraction of 95%, 50% of anionic polyurethane emulsion, 49% of ethanol, and 1% of wax emulsion according to the following weight percentages , and then stir and mix evenly to obtain a water-based VC adhesive for pharmaceutical packaging.

[0029] The water-based VC adhesive obtained in this example is coated on the aluminum foil which is a composite material composed of aluminum foil and PVC sheet, dried at 100°C to 110°C, and then hot-pressed at 160°C for 1s for compounding, and measured on an electronic tensile machine. The 180°peel strength was 9.52N / 15mm, and the easy oxide content was 0.07mL.

[0030] The anionic polyurethane emulsion used in this embodiment has a solid content of 22%-37% and a pH of 6.5-7.5, all of which can achieve the purpose of the invention. The anionic polyurethane emulsion prepared ...

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Abstract

The invention discloses a water-based VC adhesive used for medical packaging and a preparation method thereof. The weight percentages of the components of the water-based VC adhesive are as follows: 33%-50% of water-based polyurethane emulsion, 49%-66% of ethanol, anti-sticking agent 0.2% to 2%, the formula is simple, the raw material is environmentally friendly, and it can also meet the wetting and spreading on the aluminum foil without adding leveling and wetting additives, and the content of easy oxides is low, kept below 0.15mL, which can be safe for pharmaceutical packaging.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to a water-based VC adhesive used for medical packaging, and also relates to a preparation method of the water-based VC adhesive. Background technique [0002] At present, the adhesives used for bonding PVC and aluminum foil in medical packaging are mainly solvent-based, and the solvents used are generally ethyl acetate, toluene, acetone, etc., and the amount is large. These organic solvents have the disadvantages of being flammable, explosive, toxic, and harmful. During use, they endanger the health of operators, cause environmental pollution, and have fire safety hazards. In addition, the residues of organic solvents will also affect the quality of medicines. Water-based adhesives can effectively avoid these safety problems caused by solvent-based adhesives. [0003] The Chinese patent with the publication number CN102746818A provides a water-based VC adhesive for compounding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J175/06C09J175/08C09J11/06C09J11/04C08G18/66C08G18/42C08G18/48C08G18/44C08G18/32C08G18/34C08G18/12
Inventor 谭雪梅李有刚
Owner 重庆中科力泰高分子材料有限公司
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