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A kind of glue for pvc tape adhesive film and preparation method thereof

A glue and film technology, applied in the direction of adhesives, film/sheet adhesives, non-polymer adhesive additives, etc., can solve problems such as easy to cause adhesion, reduce shrinkage stress of the adhesive layer, and VOC environmental impact

Active Publication Date: 2021-04-23
常州勤邦新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the impact of VOC emitted by solvent-based glue on the environment in the prior art, the recycling process is difficult, adhesion is easy to occur during transportation, and the existing water-based glue is resistant to high temperature and high humidity and the technical problems of poor peel strength
Water-based microgel polyurethane resin is used to form protrusions, which makes it easy for the glue to exclude air during lamination, and it is not easy to form air bubbles after lamination, thus overcoming the adhesion of PVC tape film during transportation. The sea-island structure is formed in the adhesive layer, which can reduce the shrinkage stress of the adhesive layer after lamination, thus bringing stable peel strength without peeling ink

Method used

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  • A kind of glue for pvc tape adhesive film and preparation method thereof
  • A kind of glue for pvc tape adhesive film and preparation method thereof
  • A kind of glue for pvc tape adhesive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024]

[0025] The sum of all the above components equals 100%.

[0026] Preparation and use process:

[0027] First add water-based polyurethane dispersion and water-based microgel polyurethane, then add water-based defoamer, water-based non-foaming substrate wetting agent, water-based nano-silica, adjust the pH value to 7-8 with a pH regulator, and filter to remove impurities Granules and foam, get water-based glue. Before coating, add water-based isocyanate curing agent accounting for 1% of the total mass of water-based polyurethane dispersion and water-based microgel polyurethane resin, dilute it with water to a coating viscosity of about 17 seconds (coat 4 cups), and then use it.

[0028] Drying process: Coat the water-based glue with adhesive film on the PVC film with a precision dimple coating production line. The mesh of the anilox roll is 120 mesh, and it is dried in a drying tunnel at a temperature of 70°C for 60 seconds, and 60 after off-line. ℃ oven for anoth...

Embodiment 2

[0030]

[0031] The sum of all the above components equals 100%.

[0032] When in use, a water-based isocyanate curing agent accounting for 1% of the total mass of the water-based polyurethane dispersion and the water-based microgel polyurethane is added.

[0033] Using method and drying process are the same as embodiment 1.

Embodiment 3

[0035]

[0036] The sum of all the above components equals 100%.

[0037] When in use, a water-based isocyanate curing agent accounting for 1% of the total mass of the water-based polyurethane dispersion and the water-based microgel polyurethane is added.

[0038] Using method and drying process are the same as embodiment 1.

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Abstract

The invention belongs to the field of water-based glue, and particularly relates to a glue for PVC film with glue and a preparation method thereof. The glue is composed of: water-based polyurethane dispersion: 60-70, water-based microgel polyurethane: 30-40, water-based disinfectant Foaming agent: 0.1-0.5, water-based non-foaming substrate wetting agent: 0.1-0.5, water-based nano silicon dioxide: 1-5, PH value regulator: 0.1-0.5. Water-based PVC adhesive film glue greatly reduces VOC emissions and reduces its hazards. High-temperature self-crosslinking water-based polymer resin is used to greatly improve the heat resistance and high-temperature and high-humidity resistance of the film. Water-based glue that can form microgel protrusions is used to overcome the adhesion of PVC tape film during stacking. At the same time Form stable non-peeling ink adhesion for various colors of UV offset printing inks. Adopt precision dimple coating, precisely control the thickness of the adhesive layer, and avoid the fluctuation of the peel strength caused by the uneven thickness of the adhesive layer.

Description

technical field [0001] The invention belongs to the field of water-based glue, in particular to a glue for PVC film with glue and a preparation method thereof. Background technique [0002] With the increasing use of PVC adhesive film in the laminated card or laminated board industry, the solvent-based glue used for PVC adhesive film is also increasing, and the impact of the VOC emitted into the atmosphere on the environment is also gradually increase. In order to reduce coating defects such as impurity spots during the coating process, the coating of PVC adhesive film needs to be carried out in a dust-free workshop, so the solvent volatilization during the production process is completely eliminated by the exhaust system. A large amount of organic solvents are produced in a relatively closed space, which will have adverse effects on the health of workshop workers and put a lot of pressure on fire prevention. In order to reduce the discharge of organic solvents, many facto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J175/06C09J11/04C09J7/24
CPCC08K2201/011C08L2205/02C09J11/04C09J175/04C09J2427/006C09J2475/00C09J7/245C08L75/06C08K3/36
Inventor 段旻刘勤学孔云飞王小兵朱明
Owner 常州勤邦新材料科技有限公司