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Latex for coating drinking filter bag cotton paper and its preparing method

A filter bag and latex technology, which is applied in the coating of coated paper and its preparation, can solve the problems of unhygienic production and use, high monomer residue, and difficult removal of latex, and achieve high cost performance and high tear strength. High, less soluble matter effect

Inactive Publication Date: 2007-01-10
浙江森兰德包装科技有公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, manufacturers use styrene-acrylic latex to impregnate tissue paper. However, due to the large amount of high-boiling point monomers such as styrene and acrylate, the boiling point of styrene is as high as 146 ° C. It is difficult to remove residual monomers from latex. The amount is relatively high, and the smell is very bad during the coating process. After the coated tissue paper is made into a coffee bag, there are many dissolved substances in the water that affect the coffee taste, and it is extremely unhygienic during production and use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Name Quantity (grams)

[0030] Kettle material:

[0031] Deionized water 80

[0032] Sodium alkyl sulfonate 2

[0033] Organic peroxide 0.011

[0034] Mixed monomer:

[0035] Vinylidene chloride (VDC) 85

[0036] Methacrylic acid (MAA) 9

[0037] Butyl Acrylate (BA) 6

[0038] Initiator:

[0039] Initiator A: tert-butyl hydroperoxide 0.099

[0040] Deionized water 10

[0041] Initiator B: carved white powder 0.08

[0042] Deionized water 10

[0043] The latex has a solids content of 30%.

[0044] The specific operation process: first add 80 grams of deionized water and 2 grams of sodium alkylsulfonate to the reactor to pass nitrogen to fully replace the air inside, then raise the temperature, and add 0.011 grams of organic peroxide when the temperature rises to 40 ° C. When the temperature rises to 51°C, the mixed monomers and initiators A and B are continuously added to the reaction kettle through the metering pump, while keeping the tempe...

Embodiment 2

[0046] Repeat Example 1, the difference between this embodiment and Example 1 is that the component of mixed monomer is: vinylidene chloride (VDC), consumption is 70 grams; (2) methacrylic acid (MAA), consumption is 20 grams; (3) butyl acrylate (BA), the dosage is 10 grams. The latex has a solids content of 10%. When the temperature rises to 53°C, the mixed monomers and initiators A and B are continuously added to the reaction kettle through the metering pump, while keeping the temperature at 52-53°C. The prepared latex has good identity.

Embodiment 3

[0048] Repeat Example 1, the difference between this Example and Example 1 is that the components of the mixed monomers are: vinylidene chloride (VDC), the consumption is 80 grams; (2) acrylic acid (AA), the consumption is 15 grams ; (3) butyl acrylate (BA), the dosage is 5 grams. The latex has a solids content of 16%. When the temperature rises to 53°C, the mixed monomers and initiators A and B are continuously added to the reaction kettle through the metering pump, while keeping the temperature at 52-53°C. The prepared latex has good identity.

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Abstract

The latex for coating tissue paper of drink filtering bag is prepared through emulsion polymerization in the presence of emulsifier and initiator. The monomer mixture for the latex includes: vinylidene chloride in 60-85 wt%, acrylate in 5-30 wt%, and unsaturated fatty acid in 5-10 wt%. The latex makes the coated tissue paper possess high wet strength, high water penetrating capacity, no toxicity, no smell, few leached matter and high performance / cost ratio, and is especially suitable for coating tissue paper for coffee, tea and other drink extracting bag.

Description

technical field [0001] The invention relates to a coating for coated paper and a preparation method thereof, in particular to a latex for coating tissue paper of a beverage filter bag and a preparation method thereof. technical background [0002] Coffee or tea filter bags were originally made of cloth, but in recent years they have been made of permeable tissue paper with sufficient wet strength. When the tissue paper is soaked in water directly, due to its extremely low wet strength and poor tear strength, It loses its strength after soaking and is neither aesthetic nor hygienic. So later, the method of coating a layer of latex on the tissue paper was adopted to enhance its strength, so that it can be soaked in water for a long time and continue to maintain its strength, and at the same time, it can also make the tissue paper have good water permeability. At present, manufacturers use styrene-acrylic latex to impregnate tissue paper. However, due to the large amount of hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/16D21H19/16
Inventor 何祥麟黄建阮国富应忠芳季国华陈荣
Owner 浙江森兰德包装科技有公司
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