Antibacterial biaxially oriented polypropylene film and preparation method thereof

A technology of biaxially stretched film and antibacterial polypropylene, which is applied in the field of antibacterial polypropylene biaxially stretched film and its preparation, and can solve problems such as cumbersome production steps

Active Publication Date: 2011-11-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of cumbersome production steps in the prior art and improve the antibacterial effect, the present invention provides an antibacterial polypropylene biaxially stretched film and a preparation method thereof, which have low production cost and good antibacterial effect

Method used

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  • Antibacterial biaxially oriented polypropylene film and preparation method thereof
  • Antibacterial biaxially oriented polypropylene film and preparation method thereof
  • Antibacterial biaxially oriented polypropylene film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Weigh 60.0 g of inorganic montmorillonite (Zhejiang Fenghong Clay Chemical Co., Ltd. MMT, sheet thickness 20-30 nm, sheet width 1 μm-30 μm), and add it to 20.0 g of polyhexamethyleneguanidine propionate (Shanghai High Polyguanidine F3000) in an aqueous solution (concentration is 10% wt), heated to 80 ° C, vigorously stirred for 8 hours, then the suspension was put into an oven for drying, and the dried product was put into a pulverizer to pulverize to obtain polyguanidine / Montmorillonite composite antibacterial agent (composite antibacterial agent 1), wherein the ratio of polyhexamethylene guanidine propionate to montmorillonite is 1:3.

Embodiment 2

[0072] Montmorillonite 80.0g (same as Example 1) is added to the ethanol solution (concentration is 10%wt) of 20.0g polyhexamethyleneguanidine hydrochloride (Shanghai High Poly Corporation F1000), and other steps are the same as Example 1 . A polyguanidine / montmorillonite composite antibacterial agent (composite antibacterial agent 2) was obtained, wherein the ratio of polyhexamethyleneguanidine hydrochloride to montmorillonite was 1:4.

Embodiment 3

[0074] Take by weighing montmorillonite 1000.0g (same as embodiment 1), join in the aqueous solution (concentration is 30%wt) that contains 300.0g polyhexamethylene biguanide hydrochloride (Shanghai Shan's Industrial Co., Ltd. PMHB), utilize spray Drying equipment for drying. The inlet temperature is set at 170°C, the outlet temperature is set at 80°C, and the ejected product is polyguanidine / montmorillonite composite antibacterial agent (composite antibacterial agent 3), in which polyhexamethylene biguanide hydrochloride and montmorillonite The ratio is 1:3.3.

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Abstract

The invention discloses an antibacterial biaxially oriented polypropylene (BOPP) film and a preparation method thereof. The antibacterial BOPP film comprises the following blended components, by weight, 100 parts of a polypropylene resin and 0.1-3 parts of a compound antibacterial agent. The compound antibacterial agent comprises montmorillonite and polyguanidinium. The polyguanidinium is coated on a surface of montmorillonite lamellas and is embedded between the montmorillonite lamellas. A weight ratio of the polyguanidinium to the montmorillonite is 3:1-1:10. The polypropylene resin is a special polypropylene resin for the BOPP. The preparation method is characterized by: mixing the components according to the ratios, or melt blending the components after mixing; carrying out casting toobtain the lamellas; carrying out biaxial stretching to obtain the antibacterial BOPP film. The antibacterial BOPP film prepared through the method has advantages of high antibacterial efficiency, low cost, innocuity and harmlessness for human body, strong water resistance and the like. The method provided by the present invention has simple production steps, and is easily applicable for industrial production.

Description

technical field [0001] The invention relates to a polypropylene composition, and furthermore, relates to an antibacterial polypropylene biaxially stretched film and a preparation method thereof. Background technique [0002] In modern society, with the enhancement of people's health and hygiene awareness, antibacterial requirements are put forward for the packaging used for food, fruits, vegetables, etc. Polypropylene biaxially oriented film (BOPP for short) occupies an important proportion in the packaging field. At present, the annual consumption of BOPP in China has exceeded 2 million tons. Antibacterial BOPP film can improve the shelf life of packaged food, fruits, vegetables, etc., prevent them from spoilage, and has a positive effect on improving human health. In addition, the application of antibacterial BOPP film in public places such as hospitals and restaurants can also reduce the chance of cross-spreading of harmful bacteria and reduce the occurrence of diseases....

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K9/04C08K3/34C08K13/06B29C55/12
Inventor 李杰高达利刘涛王小兰张丽英邵静波张师军
Owner CHINA PETROLEUM & CHEM CORP
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