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Special white master batch for liquid packaging film, preparation method and application thereof

A technology of packaging film and white masterbatch, which is applied in the field of plastic packaging materials, can solve problems such as poor sealing, cracking of composite layers, and high cost, and achieve the effects of improving quality stability, good dispersion performance, and comprehensive performance guarantee

Inactive Publication Date: 2017-05-31
QINGDAO RICH PLASTIC NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are only a few large-scale enterprises that can produce high-end liquid packaging film color masterbatch, which are mainly used in daily convenience bag coloring, agricultural film colo

Method used

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  • Special white master batch for liquid packaging film, preparation method and application thereof
  • Special white master batch for liquid packaging film, preparation method and application thereof
  • Special white master batch for liquid packaging film, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] An embodiment of another aspect of the present invention provides a method for preparing a white masterbatch for liquid packaging films as described in the foregoing embodiment, including the following steps:

[0031] Compounding process: accurately weigh the main ingredients, titanium dioxide, antioxidants, and pigments in parts by weight, and then add the above-mentioned components to the mixer in the order of adding the main ingredients and then other components for mixing. After mixing uniformly, the compounding material is obtained;

[0032] Granulation process: The compounded materials are sent to the preset temperature twin-screw underwater pelletizing and extruding granulator. The compounded materials are melted at high temperature and blended by twin-screw high-speed shearing, extrusion, underwater pelletizing, and dehydration , Obtain the special white masterbatch for liquid packaging film.

[0033] The above embodiments provide a method for preparing a special whit...

Example Embodiment

[0039] Example 1

[0040] Accurately weigh 12 parts of LLDPE, 13 parts of high melting index LDPE, 70 parts of rutile titanium dioxide, 4.5 parts of antioxidants, and 0.5 parts of pigments according to parts by weight, and add LLDPE and high melting index LDPE first, and then add the remaining components Add the above-mentioned components to a high-speed mixer for mixing in the order of fractionation. After the mixing is uniform, the compounded material is obtained.

[0041] The compounding material is fed into the twin-screw underwater pelletizing and extruding granulator. The compounding material sequentially passes through the feeding section 140°C, the melting section 160°C, the plasticizing section 170°C, and the die area after being melted at a high temperature of 190°C. Screw high-speed shearing and blending, extrusion, water cooling, air drying, and pelletizing to obtain white masterbatch 1 for liquid packaging film.

Example Embodiment

[0042] Example 2

[0043] Accurately weigh 14 parts of LLDPE, 13 parts of high melting index LDPE, 68 parts of rutile titanium dioxide, 4.5 parts of antioxidants, and 0.5 parts of pigments in parts by weight, and add LLDPE and high melting index LDPE first, and then add the remaining components Add the above-mentioned components to a high-speed mixer for mixing in the order of fractionation. After the mixing is uniform, the compounded material is obtained.

[0044] The compounding material is fed into the twin-screw underwater pelletizing and extruding granulator. The compounding material passes through the feeding section 145°C, the melting section 165°C, the plasticizing section 175°C, and the die area after being melted at high temperature at 205°C. Screw high-speed shearing and blending, extrusion, water cooling, air drying, and pelletizing to obtain white masterbatch 2 for liquid packaging film.

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Abstract

The invention provides special white master batch for a liquid packaging film, a preparation method and application thereof, belonging to the field of plastic packaging material. The special white master batch for a liquid packaging film has the advantages of high concentration, high dispersion, high whiteness, excellent compound properties, equalized properties and the like, and can meet the operating requirements of the liquid packaging film industry. The special white master batch for a liquid packaging film is prepared from the following components in parts by weight: 21-30 parts of a main material, 65-75 parts of titanium dioxide, 3-5 parts of an antioxidant and 0.4-1 part of a pigment, wherein the main material is a mixture of LLDPE and high-melt flow index LDPE. The special white master batch can be applied to the production process of liquid packaging films.

Description

technical field [0001] The invention belongs to the field of plastic packaging materials, in particular to a special white masterbatch for liquid packaging films, its preparation method and its application. Background technique [0002] Among the plastic packaging materials, the market demand for film materials has increased the most, accounting for about 46% of the total plastic packaging materials. Plastic packaging films mainly include: heat shrinkable packaging film, wrapping packaging film, food aseptic packaging film, fruit and vegetable fresh-keeping film, liquid packaging film, etc. [0003] With the continuous improvement of the equipment level of my country's plastic film industry, a number of new products have emerged. For example, the biaxially oriented film as a composite packaging substrate not only overcomes the long-term import situation, but also exports about 300,000 tons per year, earning foreign exchange. More than 3 billion US dollars. The number of lar...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K13/02C08K3/22C08K5/526C08K5/134C08J3/22B29C47/92B29B9/06B29C48/92
CPCC08L23/06B29B9/06B29C48/92B29C2948/92704C08J3/226C08J5/18C08J2323/06C08J2323/08C08J2423/06C08J2423/08C08K2201/014C08L23/0815C08L2203/16C08L2207/066C08K13/02C08K2003/2241C08K5/526C08K5/1345
Inventor 金海木陈文礼牛茂平赵宁
Owner QINGDAO RICH PLASTIC NEW MATERIAL
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