CN112009125A - Spraying process for plastic piece in-mold embedded sheet - Google Patents
Spraying process for plastic piece in-mold embedded sheet Download PDFInfo
- Publication number
- CN112009125A CN112009125A CN201910448818.2A CN201910448818A CN112009125A CN 112009125 A CN112009125 A CN 112009125A CN 201910448818 A CN201910448818 A CN 201910448818A CN 112009125 A CN112009125 A CN 112009125A
- Authority
- CN
- China
- Prior art keywords
- plastic
- abs
- plastic piece
- mold
- base film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/382—Contact thermal transfer or sublimation processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0036—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers dried without curing
Abstract
The invention discloses a spraying process of an embedded sheet in a plastic piece mould, which is characterized in that an ABS (acrylonitrile butadiene styrene) base film with texture patterns is formed by a thermal transfer printing technology, the surface shape of a plastic piece to be printed is formed by high-pressure plastic suction, the plastic piece is embedded into an injection mould, and finally the plastic piece with the texture patterns is formed by injection moulding through an injection moulding machine.
Description
Technical Field
The invention belongs to the technical field of plastic part printing, and particularly relates to a spraying process for an embedded sheet in a plastic part mould.
Background
The existing curved surface printing of plastic parts mainly adopts a water transfer printing process, and the process flow is as follows: the injection molding of the plastic piece, the spraying of the priming paint on the plastic piece, the spraying of the primed plastic piece, the transfer printing of the ink on the film on the plastic piece by using the water transfer film, the washing of the residual film on the transferred plastic piece by using water, the hot drying, the spraying of the wear-resistant finish paint and the finished product.
The water transfer printing technology has the main defect that a large amount of sewage cannot be treated, and the water pollution is caused because a direct discharging mode is adopted at home at present. The water transfer printing technology is to print the texture on the polyvinyl alcohol film, when in use, the printed water transfer printing film floats on the surface of clear water in a water tank, then the solvent is sprayed on the water transfer printing film to slightly dissolve the ink, then the plastic part is immersed from the surface of the film, the ink can be attached to the surface of the plastic part, the polyvinyl alcohol film can be completely dissolved in the water, and the used water can not be reused and can only be drained.
The wastewater produced by one water transfer printing production line per day is as high as more than 80 cubic meters.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a plastic piece in-mold insert spraying process, wherein an ABS base film with a texture pattern is formed by a thermal transfer printing technique, a plastic piece to be printed is formed into a surface shape by high pressure vacuum forming, and is embedded into an injection mold, and finally the plastic piece with the texture pattern is formed by injection molding through an injection molding machine, and varnish is sprayed.
In order to solve the technical problem, the invention discloses a spraying process of an embedded sheet in a plastic piece mould, which comprises the following steps: step a: printing a predetermined texture pattern on the PET release film on a printer;
step b: installing the printed PET release film on a thermal transfer printing thermoprinting machine, thermally transferring an ABS base film with the thickness of 0.4mm to transfer the texture pattern onto the ABS base film, and tearing off the PET release film;
step c: forming the ABS base film into the surface shape of a plastic part to be printed by a hot plastic suction process, and punching and cutting off the residual edges to obtain an ABS membrane;
step d: placing the ABS membrane in an injection mold, injecting raw materials, forming a plastic piece with a texture pattern and taking out the plastic piece;
step e: and spraying wear-resistant varnish on the plastic part with the texture pattern, and drying.
According to an embodiment of the present invention, before the step a, a high-resolution texture picture is firstly produced by a computer, then a dot-matrix electroengraving intaglio is produced according to the picture size, and the dot-matrix electroengraving intaglio is installed on a printing machine to print on the PET release film.
According to an embodiment of the present invention, the thermal transfer temperature in step b is 140 ° -160 °; the thermal transfer pressure is 4-6 kg/cm 2; the thermal transfer printing time is 8-15 s.
According to an embodiment of the present invention, the hot plastic suction process in step c includes clamping the ABS base film on a frame of a vacuum forming machine, heating for softening, adsorbing the ABS base film on a mold through an air channel of the mold edge by vacuum, and cooling for a short time to obtain a formed ABS membrane with a remaining edge; the surface shape of the mould corresponds to the surface shape of the plastic part to be printed.
Compared with the prior art, the invention can obtain the following technical effects:
the ABS basement membrane with the texture patterns is formed through a thermal transfer printing technology, the surface shape of a plastic piece to be printed is formed through high-pressure plastic suction, the plastic piece to be printed is embedded into an injection mold, the plastic piece with the texture patterns is finally formed through injection molding through an injection molding machine, varnish is sprayed, the problem of waste water in the past printing is solved, curved surface printing can be carried out on the surface of the plastic piece, water can be omitted, the purposes of water saving and environmental protection are achieved, and the production cost is reduced.
Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
Detailed Description
The following embodiments are described in detail with reference to the accompanying drawings, so that how to implement the technical features of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.
The invention discloses a spraying process of an embedded sheet in a plastic piece mould, which is named in English: imp (insert molding bonding), which comprises:
step a: printing a predetermined texture pattern on the PET release film on a printer; specifically, firstly, a computer is used for manufacturing a high-resolution texture picture, then a dot type electric carving intaglio is manufactured according to the picture size, the dot type electric carving intaglio is installed on a printing machine and is printed on a PET release film, and the PET release film with a preset texture pattern is formed.
Step b: installing the printed PET release film on a thermal transfer printing thermoprinting machine, thermally transferring an ABS base film with the thickness of 0.4mm to transfer the texture pattern onto the ABS base film, and tearing off the PET release film; in the operation step, the thermal transfer printing temperature is 140-160 degrees; the thermal transfer pressure is 4-6 kg/cm 2; the heat transfer printing time is 8-15 s, and the transfer printing is fully performed.
Step c: forming the ABS base film into the surface shape of a plastic part to be printed by a hot plastic suction process, and punching and cutting off the residual edges to obtain an ABS membrane; wherein, the hot plastic uptake process comprises clamping the ABS basement membrane on the frame of a vacuum forming machine, heating and softening, adsorbing the ABS basement membrane on a mould by vacuum through an air channel at the edge of the mould, and cooling for a short time to obtain the formed ABS membrane with the residual edge; it should be understood that the surface shape of the mold corresponds to the surface shape of the plastic part to be printed, and the surface shape of the final plastic-suction-molded ABS membrane also corresponds to the surface shape of the plastic part. And then cutting off the residual edge under high pressure so that the ABS membrane can be embedded into the injection mold.
Step d: placing the ABS membrane in an injection mold, injecting raw materials, forming a plastic piece with a texture pattern and taking out the plastic piece; the melting point of the ABS membrane selected by the invention is higher than that of a plastic part, the ABS membrane cannot be melted and damaged during injection molding, and the ABS membrane is fused with the surface of the formed plastic part during injection molding, so that the plastic part with texture patterns is finally obtained.
Step e: and spraying wear-resistant varnish on the plastic part with the texture pattern, performing surface treatment, and drying.
The ABS base film with the texture patterns is formed by a thermal transfer printing technology, the surface shape of the plastic piece to be printed is formed by high-pressure plastic suction, the plastic piece to be printed is embedded into an injection mold, and finally the plastic piece with the texture patterns is formed by injection molding through an injection molding machine, and varnish is sprayed.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A spraying process for an embedded sheet in a plastic piece mold is characterized by comprising the following steps:
step a: printing a predetermined texture pattern on the PET release film on a printer;
step b: installing the printed PET release film on a thermal transfer printing thermoprinting machine, thermally transferring an ABS base film with the thickness of 0.4mm to transfer the texture pattern onto the ABS base film, and tearing off the PET release film;
step c: forming the ABS base film into the surface shape of a plastic part to be printed by a hot plastic suction process, and punching and cutting off the residual edges to obtain an ABS membrane;
step d: placing the ABS membrane in an injection mold, injecting raw materials, forming a plastic piece with a texture pattern and taking out the plastic piece;
step e: and spraying wear-resistant varnish on the plastic part with the texture pattern, and drying.
2. The plastic in-mold insert spraying process of claim 1, wherein step a is preceded by computer-generated high resolution texture picture, then by generating dot-engraved electro-gravure according to picture size, and installing the dot-engraved electro-gravure on a printing machine for printing on PET release film.
3. The process of claim 1, wherein the thermal transfer temperature in step b is from 140 ° to 160 °; the thermal transfer pressure is 4-6 kg/cm 2; the thermal transfer printing time is 8-15 s.
4. The plastic in-mold insert spraying process of claim 1, wherein the hot plastic suction molding process of step c comprises clamping the ABS base film on a frame of a vacuum forming machine, heating for softening, passing through an air passage of the mold edge, sucking the ABS base film onto the mold by vacuum, and cooling for a short time to obtain the formed ABS film with the remaining edge; the surface shape of the mould corresponds to the surface shape of the plastic part to be printed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448818.2A CN112009125A (en) | 2019-05-28 | 2019-05-28 | Spraying process for plastic piece in-mold embedded sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448818.2A CN112009125A (en) | 2019-05-28 | 2019-05-28 | Spraying process for plastic piece in-mold embedded sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112009125A true CN112009125A (en) | 2020-12-01 |
Family
ID=73502083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910448818.2A Pending CN112009125A (en) | 2019-05-28 | 2019-05-28 | Spraying process for plastic piece in-mold embedded sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112009125A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030075003A1 (en) * | 1999-04-19 | 2003-04-24 | Wenderoth, Lind & Ponack, L.L.P. | Steering wheel and method for manufacturing same |
| CN1892943A (en) * | 2005-07-04 | 2007-01-10 | 周志强 | Power-supply switch covered up by decorative article |
| CN102510688A (en) * | 2011-10-21 | 2012-06-20 | 张立忠 | Protection shell for digital product and manufacturing method |
| CN102673293A (en) * | 2012-05-23 | 2012-09-19 | 南京科晖印刷科技有限公司 | Thermal transfer in-mould decoration and preparation method thereof |
| CN103448233A (en) * | 2012-05-29 | 2013-12-18 | 梁冠华 | Thermal transfer printing forming method |
| CN104999664A (en) * | 2015-08-04 | 2015-10-28 | 北京辰海高科科技有限公司 | Injection-molded part vacuum lamination decoration forming structure and method |
| CN107471736A (en) * | 2016-06-06 | 2017-12-15 | 天津市康华纸塑包装有限公司 | The preparation method that a kind of plastic packing box first decorates color printing picture and text aftershaping |
-
2019
- 2019-05-28 CN CN201910448818.2A patent/CN112009125A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030075003A1 (en) * | 1999-04-19 | 2003-04-24 | Wenderoth, Lind & Ponack, L.L.P. | Steering wheel and method for manufacturing same |
| CN1892943A (en) * | 2005-07-04 | 2007-01-10 | 周志强 | Power-supply switch covered up by decorative article |
| CN102510688A (en) * | 2011-10-21 | 2012-06-20 | 张立忠 | Protection shell for digital product and manufacturing method |
| CN102673293A (en) * | 2012-05-23 | 2012-09-19 | 南京科晖印刷科技有限公司 | Thermal transfer in-mould decoration and preparation method thereof |
| CN103448233A (en) * | 2012-05-29 | 2013-12-18 | 梁冠华 | Thermal transfer printing forming method |
| CN104999664A (en) * | 2015-08-04 | 2015-10-28 | 北京辰海高科科技有限公司 | Injection-molded part vacuum lamination decoration forming structure and method |
| CN107471736A (en) * | 2016-06-06 | 2017-12-15 | 天津市康华纸塑包装有限公司 | The preparation method that a kind of plastic packing box first decorates color printing picture and text aftershaping |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102198721B (en) | Injection-moulding mould for in-mould transfer printing | |
| CN101715394B (en) | Equipment and method of thermal transfer printing from image to object | |
| CN102950697B (en) | A kind of transfer decorative method in UV transfer mold | |
| CN102390193B (en) | Film transfer printing method | |
| CN102019779A (en) | Production method of three-dimensional pattern | |
| CN106738668A (en) | A kind of steam-type high-surface gloss traceless injection molding process of complex precise plastic products | |
| CN101947895A (en) | Method for making local laser marks on surface of printing material | |
| CN103507458A (en) | Manufacturing technology for environment-friendly multipoint orientating and anti-counterfeit printing paper | |
| CN102001254B (en) | Forming method of shell with high matt gradually changing effect and electronic product shell | |
| CN101396858A (en) | Decoration ejection molding method in mold | |
| CN102642421A (en) | Preparation method and transfer printing method of film capable of being printed in transfer mode | |
| CN102765269B (en) | Inkjet plastic printing process | |
| CN101618656B (en) | Plastic product with patterns on surface thereof and preparation method thereof | |
| CN112009125A (en) | Spraying process for plastic piece in-mold embedded sheet | |
| CN101733858A (en) | Film forming method using in-mould injection | |
| CN107150429A (en) | A kind of production technology of toilet lid | |
| CN202192865U (en) | Transfer printing film | |
| CN205735802U (en) | A kind of rubber mats mould | |
| KR100670573B1 (en) | Multi insert film processing method | |
| CN102092228B (en) | Preparation method of hot-laminated membrane with peripheral lines | |
| CN201842805U (en) | Plastic surface decorative direct injection film | |
| CN205835813U (en) | Automatically film pasting mold in the mould of waste material is removed | |
| KR20120138544A (en) | Injectiom mould having metal foil and manufacture method thereof | |
| CN106553466A (en) | Method for sticking | |
| CN208133497U (en) | A kind of refrigerator PET decorative panel mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201201 |