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Using method and product of water polyurethane used for coating prime glue

A water-based polyurethane and primer technology, applied in the field of water-based polyurethane, can solve the problems of environmental and human health hazards, and high manufacturing costs of solvent-based polyurethane adhesives, and achieve the effects of improving economic benefits, improving comprehensive competitiveness, and reducing manufacturing costs.

Inactive Publication Date: 2008-03-26
海南现代高科实业有限公司
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  • Summary
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AI Technical Summary

Problems solved by technology

Solvent-based polyurethane adhesives will cause great harm to the environment and human health due to the volatilization and residue of the solvent, and the resulting environmental problems have attracted increasing attention from the industry; in addition, the manufacturing cost of solvent-based polyurethane adhesives is high

Method used

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  • Using method and product of water polyurethane used for coating prime glue

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Effect test

Embodiment

[0013] Embodiment (1) PVDC coating / primer / BOPP coating film. The substrate film is a BOPP film with a thickness of 19um, and the coating amount of the primer is 0.3g / m 2 , PVDC coating amount is 3.0g / m 2 , Cured at 43°C for 2 days. The coating speed is 200m / min, the drying temperature of the primer layer is 125°C, and the drying time is 6 seconds, and the drying temperature of the PVDC coating is 120°C, and the drying time is 8 seconds. In addition, the primer is dried with hot air, and the top coat is dried with a combination of far-infrared heating and hot air. Coating Material Formula: (1) Primer Coating Material Formula—Weigh 10kg of water-based polyurethane adhesive (55% solid content), 59kg of demineralized water, and stir evenly. (2) PVDC coating material formula for surface coating—weigh 250kg of PVDC emulsion (solid content 49%), 10kg of palm wax slip agent, 1kg of silicon dioxide anti-sticking agent, 30kg of demineralized water, mix and stir evenly.

[0014] Embo...

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Abstract

The present invention relates to an application method of aqueous polyurethane. It is mainly used as primer coating layer in coated film production using BOPP, PET and nylon film as base material and using polyvinyl dichloride (PVDC), modified polyvinyl alcohol (PVOH) and various acrylic acids (AC) as coating material.

Description

Technical field [0001] The invention relates to a method for using water-based polyurethane, which is mainly used for using BOPP, PET and nylon film as substrates, polyvinylidene chloride (PVDC), modified polyvinyl alcohol (PVOH) and various acrylic acid (AC) etc. are coating film production methods and products of coatings. Background technique [0002] At present, in the production process of coated films such as PVDC, PVOH and AC, which are widely used in food packaging, the primer coating (its function is to make these coatings firmly adhere to the coated substrate film such as BOPP, PET, nylon, etc.) The surface) mainly uses solvent-based polyurethane adhesives. Solvent-based polyurethane adhesives will cause great harm to the environment and human health due to the volatilization and residue of the solvent, and the resulting environmental problems have attracted increasing attention from the industry; in addition, the manufacturing cost of solvent-based polyurethane a...

Claims

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Application Information

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IPC IPC(8): B05D7/04B05D1/38B05D3/02C08J5/18C09J175/04
Inventor 谢文波杨强
Owner 海南现代高科实业有限公司
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