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High-temperature-resistant heat-seal adhesive applied to medicinal aluminum foil packaging

A high-temperature-resistant technology, applied in the field of heat-sealing adhesives, can solve problems such as containing harmful substances, producing harmful substances, and drug pollution, and achieves good safety effects

Inactive Publication Date: 2012-11-28
ZHENGZHOU CHENLONG ALUMINUM FOIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing heat-sealing adhesives are difficult to meet the above-mentioned performance requirements, and some of them also contain harmful substances or produce harmful substances at high temperatures, which are easy to cause pollution to medicines during the sealing process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1 The high-temperature-resistant heat-sealing adhesive applied to pharmaceutical aluminum foil packaging is made of the following raw materials:

[0015] Ethyl acetate (EA) 100kg, methyl ethyl ketone (MEK) 100kg, butyl acetate (BA) 16kg, polyurethane resin (PU) for ink 120kg, (VMCH) 64kg.

[0016] The specific preparation method is as follows: measure ethyl acetate, butyl acetate, and butanone according to the stated ratio, add them to the reaction kettle in turn, stir at 65°C for 30 minutes, add chlorine wax and continue stirring, and add polystyrene after the chlorine wax is completely infiltrated and dissolved for 30 minutes. ester, stop stirring after 2 hours, and discharge it for use after the foam completely disappears.

[0017] Performance indicators of the above high temperature resistant heat sealant:

[0018] Solid content: 25±1% (180°C for 10 seconds) (tested according to the national standard test method);

[0019] Fineness: ≤50 centipoise;

[002...

Embodiment 2

[0023] Example 2 The high-temperature resistant heat-sealing adhesive applied to pharmaceutical aluminum foil packaging has the following raw material composition:

[0024] 28% ethyl acetate, 22% methyl ethyl ketone, 5% butyl acetate, 27% polyurethane resin for ink, and 18% vinyl chloride. The preparation method is the same as in Example 1.

[0025] Performance indicators of the above high temperature resistant heat sealant:

[0026] Solid content: 25.5±1% (180°C for 10 seconds);

[0027] Fineness: ≤50 centipoise;

[0028] Viscosity: 17±2 seconds / 25℃;

[0029] Appearance: light yellow transparent liquid;

[0030] Heat-sealing strength: ≥7.9 Newton (test sample 15×200mm, heat-sealing temperature 150°C, pressure 2kg, time 1s).

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PUM

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Abstract

The invention relates to high-temperature-resistant heat-seal adhesive applied to medicinal aluminum foil packaging. The high-temperature-resistant heat-seal adhesive comprises 25 to 30 percent of ethyl acetate, 20 to 30 percent of butanone, 3 to 6 percent of butyl acetate, 25 to 35 percent of polyurethane resin for printing ink and 15 to 20 percent of chloride vinyl acetate. The high-temperature-resistant heat-seal adhesive has the beneficial effects of flexibility, light weight, high heat-seat strength, high oil resistance, high solvent resistance, high temperature cooking resistance, excellent thermal insulation, excellent barrier property, high wettability and transparency to pigment, high glossiness, no influence on the color of bottom materials, no benzene solvent and high safety.

Description

technical field [0001] The invention relates to a heat-sealing adhesive, in particular to a high-temperature-resistant heat-sealing adhesive applied to pharmaceutical aluminum foil packaging. Background technique [0002] In the process of packaging medicines in aluminum foil, specific heat-sealing glue is often used to heat-seal and fix the gravure printing surface. This requires that the heat-sealing adhesive has excellent adhesion to the plastic film, and the formed sealing film has good heat resistance and water boiling resistance, good solvent release and less residue, good wettability to pigments, and high gloss. . However, most of the existing heat-sealing adhesives are difficult to meet the above-mentioned performance requirements, and some of them also contain harmful substances or produce harmful substances at high temperatures, which are easy to cause pollution to medicines during the sealing process. The "National Drug Packaging Container (Material) Standard"...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J127/06
Inventor 王敏生杜景跃
Owner ZHENGZHOU CHENLONG ALUMINUM FOIL
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