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Water-based aluminium foil adhesive for cigarette packing and preparation method thereof

An adhesive, water-based technology, applied in the direction of adhesives, ester copolymer adhesives, unsaturated alcohol copolymer adhesives, etc., can solve the problem of residual formaldehyde in vinyl acetate monomer, performance degradation, poor adhesion, etc. Problems, to avoid the risk of delamination, improve the peel strength, excellent bonding performance effect

Active Publication Date: 2013-03-20
NANTONG GAOMENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While cigarette material factories generally use starch glue, vinegar-acrylic emulsion adhesive or VAE emulsion when making aluminum foil paper, the main problems are: (1) the adhesion is not good enough, and sometimes delamination occurs; (2) Poor water resistance, easy to delaminate after absorbing moisture; (3) Vinyl acetate monomer residue or formaldehyde exceeds the standard, and the smell is strong
(4) The frost resistance is poor, and the performance drops significantly when used in winter
The current problems of water-based aluminum foil adhesives on the market will affect the production and product quality of cigarette pack material factories, and even hinder the development of the tobacco packaging industry
[0003] Water-based acrylic emulsion is a kind of environmentally friendly and safe adhesive product. It has excellent bonding performance, good water resistance and low odor. It has been widely used in the cigarette pack industry, but its cost is lower than that of starch glue, vinegar-acrylic emulsion adhesive and VAE emulsion is much higher, and has greater cost pressure for cigarette pack material factories

Method used

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  • Water-based aluminium foil adhesive for cigarette packing and preparation method thereof
  • Water-based aluminium foil adhesive for cigarette packing and preparation method thereof
  • Water-based aluminium foil adhesive for cigarette packing and preparation method thereof

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preparation example Construction

[0022] The embodiment of the present invention provides a method for preparing the above-mentioned water-based aluminum foil adhesive for cigarette packaging, comprising the following steps:

[0023] Get water-based acrylic acid emulsion, vinyl acetate-ethylene emulsion, mass concentration by formula of the present invention and be the raw materials of 20% polyvinyl alcohol solution, water-based auxiliary agent and deionized water;

[0024] At 70°C, put the vinyl acetate-ethylene emulsion in the raw material into the water-based acrylic emulsion prepared in the polymerization kettle, and stir for 25-35 minutes;

[0025] Add the prepared polyvinyl alcohol solution with a mass concentration of 20% to the mixed emulsion in the above polymerization kettle, and stir for 25 to 35 minutes;

[0026] Raise the temperature of the polymerization kettle to 82-84°C, vacuumize, the vacuum degree is -0.03--0.04MPa, keep it for 60 minutes, and keep stirring; then lower the temperature to belo...

Embodiment 1

[0041] This embodiment provides a water-based aluminum foil adhesive for cigarette packaging, the preparation method of which is as follows:

[0042] (1) Raw material formula for the preparation of water-based acrylic emulsion (parts by weight, the same below):

[0043]

[0044]

[0045] (2) VAE emulsion:

[0046] BJ-706 (product of Beijing Organic Chemical Factory) 450

[0047] (3) PVA solution:

[0048] Deionized water 144

[0049] PVA2088 (product of Beijing Organic Chemical Factory) 36

[0050] (4) Water-based additives:

[0051] Defoamer 8034A (Cognis product) 1.8

[0052] Preservative Kathon (Rohm and Haas product) 1.2

[0053] (5) Deionized water 170

[0054] Preparation steps:

[0055] (1) Preparation of water-based acrylic emulsion: using the conventional pre-emulsification seed emulsion polymerization method, first put 40wt% deionized water, emulsifier and all monomers into the pre-emulsification tank, stir and emulsify to obtain the pre-emulsion; then ...

Embodiment 2

[0060] This embodiment provides a water-based aluminum foil adhesive for cigarette packaging, the preparation method of which is as follows:

[0061] (1) Raw material formula for the preparation of water-based acrylic emulsion (parts by weight, the same below):

[0062]

[0063] (2) VAE emulsion:

[0064] Celvolit 143 (Celanese product) 400

[0065] (3) PVA solution:

[0066] Deionized water 128

[0067] PVA2099 (product of Beijing Organic Chemical Factory) 32

[0068] (4) Water-based additives:

[0069] Defoamer AD01 (Air Chemicals) 1.4

[0070] Preservative Kathon (Rohm and Haas product) 1.8

[0071] (5) Deionized water 140

[0072] Preparation steps:

[0073] (1) Preparation of water-based acrylic emulsion: using the conventional pre-emulsification seed emulsion polymerization method, first put 42wt% deionized water, emulsifier and all monomers into the pre-emulsification tank, stir and emulsify to obtain the pre-emulsion; then polymerize Put 48wt% deionized wat...

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Abstract

The invention discloses a water-based aluminium foil adhesive for cigarette packing and a preparation method thereof and belongs to the field of adhesive preparation. The adhesive is composed of water-based acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, a polyvinyl alcohol solution, water-based additives and deionized water. The adhesive has the advantages that both the economy of the vinyl acetate-ethylene emulsion and the excellent adhesive property of the water-based acrylic emulsion are provided, so that the peel strength is high in and the risk that aluminium foil paper products are delaminated is avoided; meanwhile, the copolymerization is carried out by adopting soft monomer based acrylic monomers, so that the initial adhesive force is good; acrylic acid functional monomers are adopted, so that the emulsion stability is enhanced and the final peel strength of the emulsion is greatly increased; the water-based acrylic emulsion is introduced, so that the water resistance is obviously increased, the freezing resistance is better than that of general vinyl acetate-ethylene copolymer emulsion and the use cost is much lower than that of general water-based acrylic emulsion; and residual vinyl acetate monomers and formaldehyde are removed through vacuumizing, so that the requirements of water-based adhesives for the cigarette packing are completely satisfied.

Description

technical field [0001] The invention relates to the field of aluminum foil adhesive preparation, in particular to a water-based aluminum foil adhesive for cigarette packaging and a preparation method thereof. Background technique [0002] my country is a big cigarette production and consumption country. The annual production of cigarettes is about 34 million large boxes, and it needs to consume 400,000 to 800,000 tons of various cardboards, mainly including aluminized paper, aluminum foil paper and white cardboard, which are mainly used to make cigarette packaging. Boxes and cigarettes lined with paper. Aluminum-coated paper or laser-coated paper is more common for cigarette outer boxes, but aluminum foil paper is still the dominant cigarette lining paper. The main reason is that the production process of aluminum foil paper is simple, the stiffness is good, and it can meet the requirements of fast packaging. While cigarette material factories generally use starch glue, vin...

Claims

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Application Information

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IPC IPC(8): C09J131/04C09J123/08C09J133/08C09J133/12C09J129/04C08F220/14C08F220/18C08F220/06
Inventor 陈小锋沈峰邓煜东
Owner NANTONG GAOMENG NEW MATERIAL
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