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EVA hot melt adhesive, preparation process and application thereof

A technology of hot-melt adhesives and reactors, applied in adhesives, adhesive types, mineral oil hydrocarbon copolymer adhesives, etc., can solve the problems of easy rebound, short opening time, waste, etc., and achieve strong anti-rebound ability, The effect of high bond strength and long open time

Inactive Publication Date: 2020-07-10
上海路嘉胶粘剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of double-sided tapes has the following problems: 1. Insufficient fast stickiness: in the process of sealing cartons, it is necessary to wait for more time to allow the double-sided tapes to fully fit; 2. Fixed width: once the double-sided tapes leave the factory, the width of the tapes will be It cannot be changed anymore, and it will not be applicable due to the change of the type of carton during use, resulting in waste; 3. The double-sided tape affects the appearance of the carton packaging; 4. The double-sided tape is not resistant to high and low temperature, climate change, easy Unglue
[0004] Aiming at the above-mentioned technical problems, the present invention provides an EVA hot melt adhesive, which is mainly suitable for the automatic packaging and sealing of super-large cartons such as furniture cartons, loaded with overweight items, and solves the problem of using ordinary sealing hot melt adhesives for furniture sealing. The opening time is short, the strength is insufficient, and it is easy to rebound, which is not suitable for the large-volume carton of furniture and the sealing operation of heavy-weight items

Method used

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  • EVA hot melt adhesive, preparation process and application thereof

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preparation example Construction

[0075] Second aspect of the present invention provides the preparation method of described EVA hot-melt adhesive, at least comprise the following steps:

[0076] (1) Add vinyl acetate-ethylene copolymer and wax to the reaction kettle, heat to 70-130°C while stirring, and continue stirring until the mixture is uniform;

[0077] (2) Add antioxidant into the reaction kettle, continue heating to 130-170°C, and stir until evenly mixed;

[0078] (3) Add rosin resin and petroleum resin into the reaction kettle, stir for 30-60 minutes, cool down to 120-150°C, and discharge to obtain the product.

[0079] The third aspect of the present invention provides the application of the EVA hot melt adhesive, which is applied to the field of carton sealing and packaging for furniture packaging

[0080] In a more preferred embodiment, the EVA hot melt adhesive is especially suitable for the field of sealing and packaging of large cartons and cartons containing overweight items.

Embodiment 1

[0085] Embodiment 1 provides an EVA hot-melt adhesive, which comprises the following components by weight percentage: 45% of vinyl acetate-ethylene copolymer, 39% of tackifying resin, 15% of wax, and 1% of auxiliary agent.

[0086] The vinyl acetate-ethylene copolymer is selected from American DuPont, model 210W; the tackifying resin is a combination of petroleum resin and rosin resin, and the weight ratio is 1:8; 120S; the rosin resin is selected from Guangzhou Kemao Chemical, model 146; the wax is polyethylene wax, selected from Honeywell, model Ac6A; the auxiliary agent is an antioxidant, selected from Foshan Yuansheng Chemical Industry Co., Ltd., the model is Yuansheng-1010.

[0087] The preparation method of described EVA hot-melt adhesive, comprises the following steps:

[0088] (1) Add vinyl acetate-ethylene copolymer and wax to the reaction kettle, heat to 110°C while stirring, and continue stirring until the mixture is uniform;

[0089] (2) Add antioxidant into the ...

Embodiment 2

[0092] Embodiment 2 provides an EVA hot-melt adhesive, which comprises the following components by weight percentage: 50% of vinyl acetate-ethylene copolymer, 30% of tackifying resin, 19.9% ​​of wax, and 0.1% of auxiliary agent.

[0093]The vinyl acetate-ethylene copolymer is selected from American DuPont, model 210W; the tackifying resin is a combination of petroleum resin and rosin resin, and the weight ratio is 1:5; 120S; the rosin resin is selected from Guangzhou Kemao Chemical, model 146; the wax is polyethylene wax, selected from Honeywell, model Ac6A; the auxiliary agent is an antioxidant, selected from Foshan Yuansheng Chemical Industry Co., Ltd., the model is Yuansheng-1010.

[0094] The preparation method of described EVA hot-melt adhesive, comprises the following steps:

[0095] (1) Add vinyl acetate-ethylene copolymer and wax to the reaction kettle, heat to 110°C while stirring, and continue stirring until the mixture is uniform;

[0096] (2) Add antioxidant into...

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Abstract

The invention relates to the technical field of hot melt adhesives, in particular to an EVA hot melt adhesive special for furniture box sealing and a preparation process thereof. The EVA hot melt adhesive at least comprises the following components by weight percentage: 20-50% of a vinyl acetate-ethylene copolymer, 30-60% of tackifying resin, 0.1-2% of an assistant and the balance wax. The hot melt adhesive provided by the invention solves the problems that a common hot melt adhesive is short in opening time and low in strength, is not suitable for the high strength requirement of ultra-largeweight of furniture, is easy to rebound and come apart in carton sealing for large-size furniture, and is not suitable for sealing of cartons with long length. The EVA hot melt adhesive provided by the invention is especially suitable for sealing heavy furniture packaging cartons, and has the advantages of high bonding strength, good strength, bearability of the weight of super-large furniture, environmental protection, long opening time, adaptation to the super-long length of furniture cartons, good toughness, high rebound resistance and the like.

Description

technical field [0001] The invention relates to the technical field of hot-melt adhesives, in particular to an EVA hot-melt adhesive and its preparation process and application. Background technique [0002] With the promotion and implementation of national industrial manufacturing 4.0, China's domestic intelligent manufacturing is developing rapidly. Traditionally, the furniture industry is a labor-intensive industry with a large number of workers, a lot of manual work, and a low degree of automation. Some large domestic furniture factories and wooden door factories Responding to the government's call and keeping up with the development of the world's manufacturing industry, a new factory has been established in accordance with the standards of Industry 4.0, which has greatly improved the production efficiency of the furniture industry and reduced labor costs, thereby reducing the entire furniture manufacturing cost. [0003] However, the last link in the smart furniture ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J193/04C09J157/02C09J11/06C09J11/08
CPCC08L2205/035C09J11/06C09J11/08C09J123/0853C09J193/04C08L93/04C08L57/02C08L23/06C08K5/1345C08L23/0853
Inventor 凌万青
Owner 上海路嘉胶粘剂有限公司
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