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Charcoal-containing plastic packing material and method for manufacturing same

A technology of plastic packaging and manufacturing method, which is applied in the field of carbon-containing plastic packaging materials and its manufacturing, can solve the problems of poor quality, insufficient compatibility of carbon and resin, and foreign body sensation, so as to reduce odor and ammonia gas, and inhibit corruption. bacteria, the effect of delaying the process of corruption

Inactive Publication Date: 2012-11-14
KOREA COMPOSITE RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of trying to find out how to solve the problems of insufficient physical properties, clumping phenomenon (feeling of foreign body), poor molding, and poor quality caused by insufficient compatibility of carbon and resin, the inventors found that plastic packaging materials have different thicknesses, The extent of these problems also varies
Then the inventors learned that according to the thickness of the molded plastic packaging material, the particle size of the carbon powder compatible with the resin, the amount of resin used, and the uniformity of the particle size can be adjusted to solve the problem of compatibility between carbon and resin. Insufficient problem caused, and then completed the present invention
The object of the present invention is to provide a method not only for general physical properties, but also for solving problems such as lack of physical properties caused by insufficient compatibility of carbon and resin, clumping phenomenon, foreign body sensation, poor molding, and poor quality. A plastic packaging material with excellent performance, including carbon, which has the functions of inhibiting spoilage bacteria, absorbing pollution particles and odors, emitting far infrared rays and anions, and antistatic

Method used

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  • Charcoal-containing plastic packing material and method for manufacturing same
  • Charcoal-containing plastic packing material and method for manufacturing same
  • Charcoal-containing plastic packing material and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0046] Manufacture of plastic packaging bags

[0047] 100kg of polyethylene resin and 0.5kg of carbon powder with an average diameter of about 10μm and a particle uniformity of 97% are put into the mixing machine, and the resin and carbon powder are mixed and extruded in a vacuum state to form a masterbatch in the form of flakes. Then, the masterbatch is blown into a film with a thickness of 0.05 mm, and then the film is cut to make a carbon-containing polyethylene zipper bag.

[0048] figure 1 It is a cross-sectional simulation diagram of the plastic packaging bag (zipper bag) manufactured in this way. The packaging material manufactured according to the invention can adjust the particle size and particle size distribution according to the thickness, the carbon particles will not protrude on the surface, and the surface of the packaging bag will not appear lumpy or foreign body feeling, and maintain a smooth state as a whole. on the contrary, figure 2 It is an illustra...

manufacture example 2

[0050] Manufacture of fruit trays for fruit packaging

[0051] 100kg of polyethylene resin and 2kg of charcoal powder with an average diameter of about 20μm and a particle uniformity of 92% are put into the mixing machine, and the resin and charcoal powder are mixed and extruded in a vacuum state to form a masterbatch in the form of flakes, and then extruded The masterbatch is made into thin sheets with a thickness of 0.8mm by compression molding, and then air-pressed into a fruit plate for fruit packaging.

manufacture example 3

[0053] Manufacture of airtight containers

[0054] 100kg of polyethylene resin and 7kg of charcoal powder with an average diameter of about 35μm and a particle uniformity of 85% are put into the mixing machine, and the resin and charcoal powder are mixed and extruded in a vacuum state to form a masterbatch in the form of flakes, and then injected. Forming method The masterbatch is made into a sealed container with a thickness of up to 3 mm.

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Abstract

The present invention relates to a charcoal-containing plastic packing material and to a method for manufacturing same. The present invention provides a plastic packing material which resolves the problems caused by the immiscibility of charcoal and resin, such as deficiencies in mechanical properties, an aggregation phenomenon, foreign body sensation, defective forms, and poor quality, and which not only exhibits high-level general qualities, but which also, as a result of containing charcoal, has functional properties such as suppressing putrefactive bacteria, absorbing polluted particles and smells, radiating far-infrared rays and anions, and preventing the generation of static electricity. Also, the present invention provides a method for manufacturing a plastic packing material, in which the particle size, the amount used for resin, and the particle size uniformity of charcoal powder to be mixed with resin are adjusted in accordance with the thickness of the plastic packing material to be formed.

Description

technical field [0001] The invention relates to a plastic packaging material containing functional substances, in particular to a carbon-containing plastic packaging material and a manufacturing method thereof. Background technique [0002] As a kind of packaging material with light weight and airtightness, plastic packaging material is widely used because of its good physical properties, strong processability and economical efficiency. Nowadays, in addition to the simple packaging function, plastic packaging materials are gradually endowed with additional functions such as inhibiting the corrosion of the contents (food, etc.) and keeping fresh. For example, in order to maintain the freshness of the content (food, etc.) for a long time, pores are drilled on the film, or a variety of functional substances (such as inorganic substances, minerals, charcoal powder, spices, etc.) are added to the film. [0003] Among the functional substances, charcoal powder is widely used due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/04C08K3/04B29C48/10
CPCB29K2105/0008B29C51/002B29C45/0001B29C49/0005B29K2507/04B29C47/0004B29C45/0013B29C47/0026B29K2105/0041B29K2105/0023B29C49/04B29K2105/0011B29C48/022B29C48/10
Inventor 朴幸洙
Owner KOREA COMPOSITE RES
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