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Composite material for packaging full-biological degradation medicament

A composite material and all-biological technology, applied in the field of fully biodegradable pharmaceutical packaging composite materials, can solve the problems that threaten human survival and development, non-biodegradable, white pollution, etc., achieve excellent biocompatibility, easy processing and molding, The effect of good mechanical properties

Inactive Publication Date: 2008-07-02
威海赛绿特科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, processing aids must be used in the processing of polyvinyl chloride, and there is a problem of precipitation of additives during use and storage, which affects the health of patients
Moreover, for medical materials, incineration is generally required, and polyvinyl chloride is prone to produce hydrogen chloride and even chlorinated dioxins during incineration, which seriously pollutes the environment and affects people's health.
Moreover, this general-purpose product is not biodegradable, so more and more plastic wastes are piling up like mountains, causing serious "white pollution" and seriously threatening the survival and development of human beings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: take each component by following formula (weight percentage):

[0023] Polypropylene carbonate (PPC) 20

[0024] Polylactic acid (PLA) 80

[0025] The components are mixed in a high-speed mixer for 5 minutes, then cooled and stirred, discharged at 20-30°C, and then plasticized, extruded and granulated in a twin-screw or single-screw extruder. The temperature setting of the extruder is: 70-120°C in the feeding section, 130-155°C in the plasticizing section, and 130-150°C in the extrusion section. The screw speed is: 300 rpm. The film produced by this composite material has very good gloss, transparency and hand feeling, and can be used in the production of medical packaging materials and other aspects. The tensile strength of the film made of the composite material is 30.50Mpa. Elongation at break: 402.25%, 45 days of intensive composting test, turned into small fragments that are difficult to pick up.

Embodiment 2

[0026] Embodiment 2: take each component by following formula (percentage by weight)

[0027] Polypropylene carbonate (PPC) 70

[0028] Polylactic acid (PLA) 30

[0029] The components are mixed in a high-speed mixer for 5 minutes, then cooled and stirred, discharged at 20-30°C, and then plasticized, extruded and granulated in a twin-screw or single-screw extruder. The temperature setting of the extruder is: 70-120°C in the feeding section, 130-155°C in the plasticizing section, and 130-150°C in the extrusion section. The screw speed is: 300 rpm. The film produced by this composite material has good gloss, transparency and hand feeling.

Embodiment 3

[0030] Embodiment 3: take each component by following formula (percentage by weight)

[0031] Polypropylene carbonate (PPC) 80

[0032] Polylactic acid (PLA) 20

[0033] The components are mixed in a high-speed mixer for 5 minutes, then cooled and stirred, discharged at 20-30°C, and then plasticized, extruded and granulated in a twin-screw or single-screw extruder. The temperature setting of the extruder is: 70-120°C in the feeding section, 130-155°C in the plasticizing section, and 130-150°C in the extrusion section. The screw speed is: 300 rpm. The film produced by this composite material has good gloss, transparency and hand feeling.

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Abstract

The invention relates to a full-biodegradable composite material for packaging medicine, which is prepared by mixing 20 percent to 80 percent of polylactic acid (PLA) and 20 percent to 80 percent of poly propylene carbonate (PPC), and the percentage is weight percentage. The invention has good mechanical property, biodegradability, good thermal stability, simple processing and moulding, excellent brightness and transparency, and meets the various performance requirements of medicine packaging sheets. The invention can be completely degraded by microorganisms in soil, and after being used, no pollution is produced, thus being a desirable full-biodegradable composite material for packaging medicine.

Description

technical field [0001] The invention relates to a packaging composite material, in particular to a fully biodegradable pharmaceutical packaging composite material. Background technique [0002] We know that the composite materials used in the existing disposable drug packaging generally use aluminum foil and polyvinyl chloride or polyvinylidene chloride composite materials, aluminum foil as the support layer, polyvinyl chloride or polyvinylidene chloride as the barrier layer, and the middle layer A tie coat is required. The barrier layer is used to isolate oxygen and water vapor. From the aspects of material cost and barrier performance, polyvinyl chloride is generally used as the barrier layer of disposable pharmaceutical packaging materials. However, processing aids must be used in the processing of polyvinyl chloride, and there is a problem of precipitation of additives during use and storage, which affects the health of patients. Moreover, medical materials generally n...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L69/00
Inventor 冯超
Owner 威海赛绿特科技发展有限公司
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