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Special PVDC coating latex for cigarette film and its preparation method and application

A technology for coating latex and cigarette film, which is applied in coating, transportation and packaging, flexible coverings, etc. It can solve the problems of unsatisfactory barrier properties, achieve good stability and maintain the effect of cigarette flavor

Active Publication Date: 2016-01-20
海南聚能创新服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating is used on the cigarette film, so that the cigarette film has a certain heat sealing performance, but the barrier performance cannot meet the current market demand

Method used

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  • Special PVDC coating latex for cigarette film and its preparation method and application
  • Special PVDC coating latex for cigarette film and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] PVDC latex for cigarette film, the total weight of the copolymerization system is 200kg, and the mixed monomer accounts for 100kg;

[0035] Vinylidene chloride 90kg;

[0036] Methyl acrylate 9.6kg;

[0037] Itaconic acid 0.4kg;

[0038] Additives: 48g of ammonium acetate and 1.6g of ferrous chloride;

[0039] Initiator: 80g of tert-butyl hydroperoxide and 80g of sodium formaldehyde sulfoxylate;

[0040] Emulsifier: sodium secondary alkane sulfonate 2kg;

[0041] Seed emulsifier: sodium secondary alkane sulfonate 80g;

[0042] The specific operation process is:

[0043] (1) Mixed monomer preparation: mix the vinylidene chloride and methyl acrylate, stir for 2 hours, and set aside;

[0044] (2) Preparation of emulsion polymerization emulsifier: dilute the sodium secondary alkane sulfonate with water to 10 parts, and set aside;

[0045] (3) Initiator preparation: Dilute the two initiators to a concentration of 2% by mass respectively, and set aside;

[0046] (4) Se...

Embodiment 2

[0056] PVDC latex for cigarette film, the total weight of the copolymerization system is 200kg, and the mixed monomer accounts for 100kg;

[0057] Vinylidene chloride 90.6kg;

[0058]Methyl acrylate 9.1kg;

[0059] Itaconic acid 0.3kg;

[0060] Additives: 72g of ammonium acetate and 2.4g of ferrous chloride;

[0061] Initiator: 160g of tert-butyl hydroperoxide and 160g of sodium formaldehyde sulfoxylate;

[0062] Emulsifier: sodium secondary alkane sulfonate 2.4kg;

[0063] Seed emulsifier: sodium paraffin sulfonate 100g;

[0064] The specific operation process is:

[0065] (1) Mixed monomer preparation: mix the vinylidene chloride and methyl acrylate, stir for 2 hours, and set aside;

[0066] (2) Preparation of emulsion polymerization emulsifier: dilute the sodium secondary alkane sulfonate with water to 10 parts, set aside;

[0067] (3) Initiator preparation: Dilute the two initiators to a concentration of 2% by mass respectively, and set aside;

[0068] (4) Seed pol...

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Abstract

The invention discloses polyvinyl dichloride (PVDC) coating latex special for cigarette films and a preparation method and application of the PVDC coating latex special for the cigarette films. The PVDC latex is prepared from a certain amount of mixed monomers of vinylidene chloride, methyl acrylate and itaconic acid, a ptomotor, an initiator, an emulgator and a seed emulgator, and the preparation method is seed emulsion polymerization. According to the preparation method, microcrystalline wax capable of having a defoaming effect is added to enable the residual quantity of monomers in the latex is smaller. The cigarette films made of the latex has heat sealing performance and a high barrier property, and can maintain the scent of cigarettes and enable the cigarettes to not go bad and not be affected with damp. The heat sealing strength of the cigarette films is equal to or larger than 3N / 15mm, the coating weight is 3g / m<2>, the permeation amount of water vapor is equal to or smaller than 6g / m<2>*24h, the permeation volume of oxygen is equal to or smaller than 36g / m<2>*24h, and the residual quantity of vinylidene chloride monomers is equal to or smaller than 1mg / kg or is not detected.

Description

technical field [0001] The invention relates to a special PVDC coating latex for cigarette film, which is suitable for coating on the cigarette film to improve the heat sealing performance and barrier performance of the cigarette film, and belongs to the field of polymer materials. Background technique [0002] Cigarette packaging film cartridges are referred to as cigarette film for short. At present, biaxially oriented polypropylene film and polyester film are mainly used in the cigarette film market. Although these packaging films have certain characteristics such as heat sealing performance, barrier performance, and transparency, they are now With the advancement of the national anti-smoking policy, the sales of cigarettes are gradually decreasing, which leads to an increase in the inventory of cigarettes and a slowdown in the circulation rate. During the storage of cigarettes, as time goes on, the fragrance of cigarettes gradually loses and there are damp and moldy spots...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/08C08F220/14C08F222/02C08F2/26C09D127/08B65D65/40
Inventor 方勇邢青涛
Owner 海南聚能创新服务有限公司
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