Aqueous deep-draw varnish and preparation technology thereof

Abstract

The invention discloses an aqueous deep-draw varnish and a preparation technology thereof. The preparation technology comprises the following steps: adding a water-soluble acrylic modified polyester resin, a water-soluble amino resin and an epoxy resin into a dispersing cylinder; after the resins are dispersed, adding a neutralizer and a cosolvent into the added resins, and adding a wetting agent in a dispersing process; after the resins are completely dissolved and uniformly dispersed, adding a curing agent, and performing stirring and dispersing; then adding wax thick liquid, a wetting and flatting agent, a flatting agent, an antifoaming agent, a cooling agent and a preservative, after uniformly dispersing the mixture of the resins into the dispersing cylinder, the neutralizer, the cosolvent, the wetting agent, the curing agent, the wax thick liquid, the wetting and flatting agent, the flatting agent, the antifoaming agent, the cooling agent and the preservative, adding a part of deionized water, and then sampling so as to perform detection; according to a detected PH(pondus hydrogenii) value, the detected stickiness and the detected solid content, adding the surplus deionized water again, and stirring uniformly. Through the use of the deep-draw varnish disclosed by the invention, the processing performance and the adhering requirements of a pot and an iron box are satisfied, and the product disclosed by the invention does not contain a benzene component, so that a harmful component is not volatilized in the use process, the aqueous deep-draw varnish is environment-friendly, in addition, the product is nonflammable and not corrosive, and the use, the transportation and the storage of the product are safe.

Description

technical field [0001] The invention relates to the field of preparation of protective varnish for the outer wall of miscellaneous can tin boxes, in particular to a kind of processing performance that is used to protect the surface of the tin can from being polluted and rusted after the iron sheet is made into an iron can, and at the same time plays a role of increasing luster Higher requirements for deep drawing varnish and its production process. Background technique [0002] In today's metal can industry, people pay more and more attention to the perfection of products. A large part of the iron sheet will be printed with paint / ink and varnish before it is made into an iron box to protect the iron sheet from rust and improve the appearance. At present, the deep drawing varnishes used in the market are basically oily deep drawing varnishes produced from saturated polyester resins. The curing condition of its deep-drawing varnish is to bake at 180 degrees for 12 minutes, a...

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Problems solved by technology

[0003] In order to solve the problem that the existing deep drawing varnish will have a large amount of irritating odor and a large amount of harmful benzenes and toxic and harmful substances volatilization during production and use, the invention discloses a water-based deep drawing varnish and its manufacturing technology solution, which can meet the processing performance and adhesion requirements of miscellaneous tin boxes, and the product of the present invention does not contain benzene components, no harmful components volatilize during use, and is environmentally friendly. In addition, the product is non-flammable and non-corrosive. Transport and storage safety

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