Method for preparing hot-melt adhesive net film

Abstract

The invention provides a method for preparing a hot-melt adhesive net film. The method comprises the following steps of: melting a hot-melt adhesive serving as a raw material; squeezing and spinning; heating and crystallizing by infrared light; and solidifying the material to form a net by spraying and the like. The hot-melt adhesive net film with uniform aperture and stable gram weight is prepared by controlling the melting temperature of the hot-melt adhesive, the spinning speed, the speed of a conveying belt, infrared temperature and spray. The steps are continuously finished in a production flow, so that the production efficiency is greatly improved, and the method is suitable for industrial production.

Description

technical field

[0001] The invention relates to a method for preparing a hot-melt adhesive omentum, in particular to a method for preparing a hot-melt adhesive omentum by using polyester hot-melt adhesive and the like as raw materials. technical background

[0002] Hot melt adhesive is known as "green" adhesive due to its solvent-free, pollution-free, fast curing speed and good process performance. It has developed rapidly in recent years. Hot-melt adhesive film is a material with aging resistance, corrosion resistance, good thermal stability, good tensile resistance, burst resistance and good water permeability, so it is widely used in clothing industry, filter materials, shoe leather materials, Packaging materials etc. It is the most promising emerging industry in the textile industry, known as the "new material" in the textile industry.

[0003] Chinese patent CN101240148A provides a method for preparing a hot-melt adhesive omentum, including processes such as melting ...

Examples

Embodiment 1

[0016] Weigh a total of 10kg of copolyamide hot melt adhesive (melt index: 30g / 10min) model 7200, put it into the twin-screw to melt at 225°C after drying, and then enter the melt pump to pressurize to 0.8MPa. The diameter of the nozzle is 0.9mm, and the pressure of the compressed air is controlled so that the airflow speed is 90m / min, the spinning line speed is 13m / min, the diameter of the hot melt glue is 60μm, and the moving speed is 15m / min It is heated to 100°C by infrared radiation on the conveyor belt, and then sprayed by a sprayer with a water spray rate of 2Kg / h for 1.5min, crystallized and solidified, and the total time is 10min, and finally a hot-melt adhesive omentum is made. The average pore size of the omentum is 110 mesh, the average weight is 61g / m 2 .

Embodiment 2

[0018] Weigh a total of 10kg of 3150 polyester hot melt adhesive (melt index: 40g / 10min), put it into a twin-screw to melt at 200°C after drying, and then enter the melt pump to pressurize to 0.8MPa. It is ejected from a 0.3mm nozzle, the pressure of the compressed air is controlled so that the airflow velocity is 90m / min, the spinning line speed is 15m / min, the diameter of the hot melt adhesive filament ejected is 50μm, and the speed is 10m / min. Heated to 90°C by infrared radiation on the conveyor belt, sprayed by a sprayer with a water spray rate of 1Kg / h for 2 minutes, crystallized and solidified, and took a total of 12 minutes to make a hot-melt adhesive omentum. The average pore size of the omentum is 120 mesh. The average weight is 69g / m 2 .

Embodiment 3

[0020] Weigh 10kg of 3142 polyester hot-melt adhesive (melt index: 80g / 10min), put it into the twin-screw to melt at 200°C after drying, and then enter the melt pump to pressurize to 0.5MPa. It is ejected from a 0.9mm nozzle, the pressure of the compressed air is controlled so that the airflow velocity is 60m / min, the spinning line speed is 10m / min, the diameter of the hot melt adhesive filament ejected is 60μm, and the speed is 10m / min. Heated to 85°C by infrared radiation on the conveyor belt, sprayed by a sprayer with a water spray rate of 1Kg / h for 2 minutes, crystallized and solidified, and took a total of 13 minutes to make a hot-melt adhesive omentum. The average pore size of the omentum is 100 mesh. The average weight is 65g / m 2 .

technical field

[0001] The invention relates to a method for preparing a hot-melt adhesive omentum, in particular to a method for preparing a hot-melt adhesive omentum by using polyester hot-melt adhesive and the like as raw materials. technical background

[0002] Hot melt adhesive is known as "green" adhesive due to its solvent-free, pollution-free, fast curing speed and good process performance. It has developed rapidly in recent years. Hot-melt adhesive film is a material with aging resistance, corrosion resistance, good thermal stability, good tensile resistance, burst resistance and good water permeability, so it is widely used in clothing industry, filter materials, shoe leather materials, Packaging materials etc. It is the most promising emerging industry in the textile industry, known as the "new material" in the textile industry.

[0003] Chinese patent CN101240148A provides a method for preparing a hot-melt adhesive omentum, including processes such as melting ...

Examples

Embodiment 1

[0016] Weigh a total of 10kg of copolyamide hot melt adhesive (melt index: 30g / 10min) model 7200, put it into the twin-screw to melt at 225°C after drying, and then enter the melt pump to pressurize to 0.8MPa. The diameter of the nozzle is 0.9mm, and the pressure of the compressed air is controlled so that the airflow speed is 90m / min, the spinning line speed is 13m / min, the diameter of the hot melt glue is 60μm, and the moving speed is 15m / min It is heated to 100°C by infrared radiation on the conveyor belt, and then sprayed by a sprayer with a water spray rate of 2Kg / h for 1.5min, crystallized and solidified, and the total time is 10min, and finally a hot-melt adhesive omentum is made. The average pore size of the omentum is 110 mesh, the average weight is 61g / m 2 .

Embodiment 2

[0018] Weigh a total of 10kg of 3150 polyester hot melt adhesive (melt index: 40g / 10min), put it into a twin-screw to melt at 200°C after drying, and then enter the melt pump to pressurize to 0.8MPa. It is ejected from a 0.3mm nozzle, the pressure of the compressed air is controlled so that the airflow velocity is 90m / min, the spinning line speed is 15m / min, the diameter of the hot melt adhesive filament ejected is 50μm, and the speed is 10m / min. Heated to 90°C by infrared radiation on the conveyor belt, sprayed by a sprayer with a water spray rate of 1Kg / h for 2 minutes, crystallized and solidified, and took a total of 12 minutes to make a hot-melt adhesive omentum. The average pore size of the omentum is 120 mesh. The average weight is 69g / m 2 .

Embodiment 3

[0020] Weigh 10kg of 3142 polyester hot-melt adhesive (melt index: 80g / 10min), put it into the twin-screw to melt at 200°C after drying, and then enter the melt pump to pressurize to 0.5MPa. It is ejected from a 0.9mm nozzle, the pressure of the compressed air is controlled so that the airflow velocity is 60m / min, the spinning line speed is 10m / min, the diameter of the hot melt adhesive filament ejected is 60μm, and the speed is 10m / min. Heated to 85°C by infrared radiation on the conveyor belt, sprayed by a sprayer with a water spray rate of 1Kg / h for 2 minutes, crystallized and solidified, and took a total of 13 minutes to make a hot-melt adhesive omentum. The average pore size of the omentum is 100 mesh. The average weight is 65g / m 2 .

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