Hot-melt adhesive for transparent PP (polypropylene) boxes and preparation method of hot-melt adhesive

A hot-melt adhesive and transparent box technology, applied in the direction of adhesives, adhesive types, grafted polymer adhesives, etc., can solve the problems of hot pressing temperature not being too high, complex production process, and general bonding effect, etc. Achieve the effect of reducing mixing time, good strength and low cost

Active Publication Date: 2013-10-23
WUXI WANLI ADHESION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Now on the market, direct hot pressing and polyurethane hot melt adhesive are generally used for the bonding of PP transparent boxes. Because the two sides of the direct hot pressing are at a 90-degree right angle, the tension is relatively large, and the material of the PP box is thin. It is too high and the time should not be too long, so the bonding effect is general, and the bonding effect of polyurethane hot melt adhesive is excellent. But for PP materials, the hot melt adhesive needs to be pretreated with corona or solvent before sizing. , the production process is complicated, the polyurethane hot melt adhesive is a moisture curing reactive hot melt adhesive, the curing time is long, the initial viscosity is weak, the production process is long and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Amorphous polyolefin APAO: 60kg, C5 hydrogenated petroleum resin: 25kg, metallocene catalyzed polypropylene: 10kg, maleic anhydride modified polyolefin: 5kg, antioxidant 1010: 0.15kg, antioxidant 168: 0.15kg .

[0023] (1) Heating: Put 10kg of metallocene catalyzed polypropylene wax, 25kg of tackifying resin carbon pentahydrogenated petroleum resin and 0.3kg of antioxidant into an electric heating reaction furnace, raise the temperature to 130°C, and heat for 40min;

[0024] (2) Melting: Start stirring, stir the mixture in step (1), and set the final stirring speed to 150r / min, put in 60kg of amorphous polyolefin APAO and 5kg of maleic anhydride modified polyolefin, heat up to 160°C until the reaction all melted

[0025] (3) Vacuumizing and discharging: Seal the electric heating reaction furnace, turn on the vacuum pump, so that the vacuum degree in the reaction furnace reaches -0.09MPa, and the vacuuming time is 70min; turn off the vacuum pump, release the vacuum to n...

Embodiment 2

[0033] 55kg of amorphous polyolefin APAO, 20kg of tackifying resin C5 hydrogenated petroleum resin, 5kg of metallocene catalyzed polypropylene wax, 5kg of maleic anhydride modified polyolefin, 0.1kg of antioxidant 1010 and 0.1kg of antioxidant 168.

[0034] The preparation method of the hot melt adhesive for the PP transparent box, the steps are as follows:

[0035] (1) Heating: put 5kg of metallocene catalyzed polypropylene wax, 20kg of tackifying resin carbon pentahydrogenated petroleum resin, 0.1kg of antioxidant 1010 and 0.1kg of antioxidant 168 into an electric heating reaction furnace, and raise the temperature to 200°C. Heating for 20min;

[0036] (2) Melting: Start stirring, stir the mixture in step (1), set the final stirring speed to 100r / min, put in 55kg of amorphous polyolefin APAO and 5kg of maleic anhydride modified polyolefin, heat up to 160°C until the reaction all melted

[0037] (3) Vacuumizing and discharging: Seal the electric heating reaction furnace, tu...

Embodiment 3

[0040] A kind of hot-melt adhesive for PP transparent box, formula ratio is as follows by weight: amorphous polyolefin APAO 65kg, tackifying resin C5 hydrogenated petroleum resin 30kg, metallocene catalyzed polypropylene wax 10kg, maleic anhydride modified poly Olefin 10kg and antioxidant 1010 0.25kg and antioxidant 168 0.25kg;

[0041] (1) Heating: Put 10kg of metallocene catalyzed polypropylene wax, 30kg of tackifying resin carbon pentahydrogenated petroleum resin, antioxidant 1010 0.25kg and antioxidant 168 0.25kg into the electric heating reaction furnace, heat up to 160°C, Heating for 30min;

[0042] (2) Melting: Start stirring, stir the mixture in step (1), and set the final stirring speed to 120r / min, put in 65kg of amorphous polyolefin APAO and 10kg of maleic anhydride modified polyolefin, heat up to 200°C until the reaction all melted

[0043] (3) Vacuumizing and discharging: Seal the electric heating reaction furnace, turn on the vacuum pump, so that the vacuum deg...

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PUM

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Abstract

The invention relates to a hot-melt adhesive for transparent PP (polypropylene) boxes and a preparation method of the hot-melt adhesive, in particular to a hot-melt pressure-sensitive adhesive of polyolefin and a preparation method of the hot-melt pressure-sensitive adhesive of polyolefin, belonging to the technical field of a macromolecular adhesive. The preparation method comprises the following steps: adding metallocene-catalyzed propylene wax, tackifying resin which is C5 hydrogenated petroleum resin, and antioxidant into an electric-heating reaction furnace for heating; starting stirring, adding amorphous poly alpha olefin (APAO) and maleic anhydride-modified polyolefin, heating and melting; vacuumizing and then packaging to obtain the product hot melt adhesive for transparent PP boxes. The hot-melt adhesive of the polyolefin provided by the invention is characterized by simple preparation process, excellent performance at high temperature and low temperature, no carbonization, good initial adhesion, good final strength and low cost. The components with low viscosity are added firstly and then the components with high viscosity are added in the component adding process; and the rotation load of stirring paddles in the whole stirring process can be reduced, the mixing time can be decreased and the production cost can be saved by the adding sequence of the components.

Description

technical field [0001] The invention relates to a hot-melt adhesive for PP transparent boxes and a preparation method thereof, in particular to a polyolefin hot-melt pressure-sensitive adhesive and a preparation method thereof, belonging to the technical field of polymer adhesives. Background technique [0002] Polyolefin hot-melt adhesive is a new type of adhesive, which does not contain any solvents, is pollution-free, has a simple production process, is convenient to use, and has a wide range of uses. It can be used in sanitary materials, packaging, book binding, wood, and automobile industries. [0003] Polyolefin hot melt adhesives are solid at room temperature, and melt into liquid when heated to 120~200°C. They can be used by spraying, rolling and scraping, and become solid when cooled to room temperature. Pressure, cooling and solidification will produce good bonding effect. [0004] Now on the market, direct hot pressing and polyurethane hot melt adhesive are gener...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/00C09J157/02C09J123/12C09J151/06
Inventor 周其平周尚李洁玲
Owner WUXI WANLI ADHESION MATERIALS
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