CN101665054A

CN101665054A - Process for preparing vacuum thermal transfer plane textures of saturated polyurethane powder spray-paint part

Info

Publication number: CN101665054A
Application number: CN200910040778A
Authority: CN
Inventors: 许浩洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-02
Filing date: 2009-07-02
Publication date: 2010-03-10

Abstract

The invention discloses a process for manufacturing vacuum thermal transfer plane textures of a saturated polyurethane powder spray-paint part, comprising the following steps: firstly, selecting a metal spray-paint part required to be thermally transferred, thermal transfer paper having textures of wood grains or flower patterns and the like and being big enough to cover the thermally transferredmetal spray-paint part, and a tubular PET thermal transfer film being big enough to cover the metal spray-paint part covered by the thermal transfer paper; then putting the metal spray-paint part covered by the thermal transfer paper and the PET thermal transfer film in an oven with a pumped vacuum system; carrying out vacuum pumping from both ends of the tubular PET thermal transfer film so as toenable the thermal transfer paper and the thermal transfer film to cling to the thermally transferred metal spray-paint part and enable the temperature of the oven to rise to 160-180 DEG C, and baking for 5-8min; taking out the metal spray-paint part after the transfer is ended; then disassembling the thermal transfer film and the thermal transfer paper; cleaning the surfaces of the thermal transfer film and the thermal transfer paper; and packaging. The invention enables the coating color sprayed and painted on the part to be diverse after adopting the technology of the preparation process and greatly improves the work efficiency.

Description

The manufacture craft of the vacuum hot transferred plane grains of saturated polyurethane powder spray-paint part

Technical field:

What the present invention relates to is a kind of by the vacuum hot transferred manufacture craft that obtains planar grains such as imitative wood grain, decorative pattern on PU saturated polyurethane powder powder spray-paint part.

Background technology:

At present, the sprayed aluminum architectural shape of Chu Shouing on the market, aluminum spraying furniture and other iron and steel spray daily ornament, because the coating color of its spraying is single, more and more are difficult to satisfy people's decoration esthetic requirement.More existing manufacturers utilize glue that the picture and text transfer film is pasted on the metal spraying piece, and the back is heated and picture and text are transferred on the spray piece.There are some defectives in this method in production application: paste transfer film speed and expend man-hour slowly; The operant level that the workman pastes transfer film need relatively more skilled and operation careful, picture and text that cause transfer printing to go out are unintelligible or picture and text are chaotic otherwise transfer film is pasted bad; Make the transfer film that fastens with glue, need heating transfer to cause environmental pollution easily after the stickup.

Summary of the invention:

Be to overcome the weak point of above technology by the change purpose of this technological requirement, a kind of manufacture craft of vacuum hot transferred plane grains of saturated polyurethane powder spray-paint part is provided.

For achieving the above object, the technical scheme that this technology provides is: the manufacture craft of the vacuum hot transferred plane grains of saturated polyurethane powder spray-paint part, concrete processing step method is: at first, selection need be by the metal spraying piece of hot transfer printing, enough cover heat-transferring printing paper and the tubulose of being imitated textures such as wood grain or decorative pattern by the band of the metal spraying piece of hot transfer printing enough wraps up the PET heat transfer film of cover heating transfer paper metal spraying piece; Then the metal spraying piece that has wrapped up heat-transferring printing paper and PET heat transfer film is put into the baking oven of band pumped vacuum systems, vacuumize from PET heat transfer film two of tubulose, heat-transferring printing paper and heat transfer film are close to by the metal spraying piece of hot transfer printing, and make baking oven be warmed up to 160～180 ℃, baking 5～8min; Take out metal spraying piece after transfer printing finishes, disassemble heat transfer film, heat transfer film can be reused, remove heat-transferring printing paper, clean its surface, definite at last transfer quality is also packed.

After adopting above-mentioned manufacture craft technology, utilize and vacuumize the negative-pressure adsorption mode, make transfer film tightly be adsorbed on the spray piece and heating is carried out hot transfer printing and obtained planar grains, can make the coating color of Workpiece painting various, and operating efficiency improve greatly.

The specific embodiment:

The effect that needs transfer printing plane wood grain to obtain resembling pale brown background color log with a kind of aluminium architectural shape is an example below, and the present invention is described further,

One, its concrete operations processing step method is as follows:

(1) chooses the heat-transferring printing paper of the wood grain that meets the requirements.

(2) choose the satisfactory aluminium section bar that sprayed, start heat transfer machine 4 simultaneously, make its baking room temperature be preheating to 160～180 ℃.

(3) smooth heat-transferring printing paper, be coated to and spray on the aluminium section bar rightly, joint uses and seals paper and paste, and makes it and can not scatter.

(4) with the PET heat transfer film shell type of tubulose wrap up cover heating transfer paper spray aluminium section bar after aluminium section bar is fixed on the derivation arm of heat transfer machine, the vacuum-pumping tube of derivation arm packs in the PET heat transfer film cover of tubulose, the derivation arm is advanced to aluminium section bar in the baking vessel, starts simultaneously to vacuumize.

(5) suction is 0.3～0.8Mpa, and stoving time is 5～8min.This parameter is with the selection of material adjustment.

(6) take out aluminium section bar after transfer printing finishes, carefully disassemble heat transfer film, heat transfer film can be reused, remove heat-transferring printing paper, the cleaning aluminium shape surface.

(7) determine transfer quality, the good aluminium section bar of packing transfer printing.

Two, the technology point in the operating process:

(1) heat transfer machine tool equipment should be able to meet instructions for use.

(2) the qualified section bar of choosing spraying, its coating quality should be able to anti-secondary baking to 180 ℃ more than not xanthochromia, breakage, should determine that simultaneously coating answers completion of cure before hot transfer printing.

The printing-ink of the heat-transferring printing paper of (3) selecting for use should can distil under design temperature and finish, and the condensation temperature after the distillation should be lower, makes its sublimate can not pollute the good pattern of transfer printing.The color and luster of transfer printing image-text should be clear, firm simultaneously.

(4) the PET heat transfer film of selecting for use should be able to anti-setting transfer printing high temperature.

Three, operating procedure case study

(1) product after the transfer printing aberration occurs or color is inhomogeneous: check transfer substrate aberration and transfer apparatus stability; Whether the laying of checking transfer paper and transfer film is neatly smooth.

(2) spot or vaporific phenomenon appear in the product of transfer printing: check whether substrate surface is clean; Whether sticking paper or mucous membrane appear after the transfer printing; Whether completion of cure of layer dusts.

The embodiment of the above is preferred embodiment of the present invention only, is not to limit practical range of the present invention with this, so the equivalence that all shapes according to the present invention, structure and principle are done changes, all should be covered by in protection scope of the present invention.

Claims

1, the manufacture craft of the vacuum hot transferred plane grains of saturated polyurethane powder spray-paint part, it is characterized in that: concrete processing step method is: at first, selection need be by the metal spraying piece of hot transfer printing, enough cover heat-transferring printing paper and the tubulose of being imitated textures such as wood grain or decorative pattern by the band of the metal spraying piece of hot transfer printing enough wraps up the PET heat transfer film of cover heating transfer paper metal spraying piece; Then the metal spraying piece that has wrapped up heat-transferring printing paper and PET heat transfer film is put into the baking oven of band pumped vacuum systems, vacuumize from PET heat transfer film two of tubulose, heat-transferring printing paper and heat transfer film are close to by the metal spraying piece of hot transfer printing, and make baking oven be warmed up to 160～180 ℃, baking 5～8min; Take out metal spraying piece after transfer printing finishes, disassemble heat transfer film, heat transfer film can be reused, remove heat-transferring printing paper, clean its surface, definite at last transfer quality is also packed.