3.IML technology
The outstanding features of in-mold insertinjection molding (IML) technology are: the surface is a hardened transparent
film, the middle is a printed pattern layer, and the back is a plastic layer.
Because the ink is sandwiched between, the product can prevent the surface from
being scratched and resistant. It can rub and keep the color vivid for a long
time.
IML technology production process:
IMLtechnology product effect:
1) Diversification of printing appearance effects: By combining
soft-touch transfer printing with printing technologies such as color and
electroplating, various appearances can be realized.
2) The research and development of ultra-thin IML, the thinnest can
reach 0.80mm, and the deformation is less than 0.5mm; the deformation of 6-inch
battery cover is less than 1.0mm; the thickness of local glue reduction can be
0.6mm.
development
trend:
In the
existing equipment and process flow of IML technology, the improvement has
evolved into an IMT process that is more suitable for future user needs and
technical requirements, and thus re-activates the development space of
traditional plastic molding plants.
4.IMT
technology
In-mold
decoration (IMT) technology is a new process that is the integration and
extension of in-mold insert injection (IML) technology and in-mold transfer
(IMR) technology.
Its
technology uses the separation technology of the membrane and ink of IMR technology,
and takes into account the monomer molding and injection manufacturing methods
of IML technology. Its multilayer protective film can effectively protect the
quality of the main decorative layer.
IMT
process advantages: product thickness can be as thin as 0.70mm / stable
deformation / no risk of peeling
Through
the process extension, such as spraying UV, the functional requirements of the
product surface can be better achieved, such as anti-fingerprint, wear
resistance, gloss, and 3D optical texture can be achieved by printing the layer
with 3D texture and applying magnetron sputtering technology. effect.
At
present, IMT technology is a popular solution for the back cover of smart
phones. Tongda said that the IMT project is very successful and provides
solutions other than glass back plates. In 18 years, more IMT solutions will be
launched to match the low-end market. The emergence of the IMT process will
replace the current processes in the industry such as fuel injection, UV
masking, electroplating, vacuum color plating, screen printing, pad printing
and transfer, etc., and will drive the leapfrogging innovation of the product
appearance industry, realizing three-dimensional, color Gradient, R-corner and
other irregular product appearance decorative effects, while providing better
innovation and platform implementation for the appearance craft design
industry. The new IMT process combines the most popular 3D optical texture +
PVD decoration method. Compared with the traditional, the appearance value is
higher, and the arc is larger. The current IMT process is changed from the new
process to the 3D optical texture + PVD. + 3D optical texture + PVD.
Development
trend: OPPO A79 adopts the IMT process and is already selling well. At present,
the problem encountered by IMT is that the through rate needs to be improved.
In the 5G era, IMT technology may become very popular. According to Xiaobian,
many domestic manufacturers such as Tongda, Zhaoyi, Lianhe, Yuding Nano, BYD,
Jingfeng, and Huanli are all in layout, and some companies Started mass
production. In the future, IMT technology can be merged with electronic
technology and evolved into IME technology. The circuit layer is added and
electronic components are mounted, which gives the diaphragm electronic
functions and various visual, tactile, and sensory effects. It will be applied
to the smart surfaces of future cars.
5.PC put
glass injection molding process
Injection
molded transparent PC back cover, as a lower cost and efficient product form,
with better impact strength and durability, is attracting more and more
attention from traditional plastic factories, and is expected to become the
mainstream mobile phone back cover solution in 2019. It is understood that many
manufacturers such as Sanjing, Shuobeide, Tongda, Lianhe, BYD, Dongfang
Liangcai, Jierong, Xiuqiang, Jinsheng, Xinwanda, and Huike are accelerating the
deployment of injection-molded transparent PC mobile phone back covers. Raw
material manufacturers such as Mitsubishi Chemical and Sabic are also verifying
the special materials for PC injection phone back covers, which can meet the
requirements of high hardness, low stress and no rainbow pattern.
Advantages
of PC imitation glass injection molding process: Compared with PC imitation
glass injection molding process, it is easier to measure and has high
efficiency. It can imitate the effect of 2.5D / 3D glass shell. decoration.
OPPO realme is a test of PC injection molding 2.5D glass shell.
development
trend:
In 2018,
the composite board has been widely used as a glass-like mobile phone back
cover solution, but the current capacity is limited, the product is easy to
deform, the investment risk is large, and the space for process improvement and
cost reduction is not large. The cost of glass and ceramics is too expensive
and fragile. Large-scale production and good yield make it more suitable for
high-end models. As the cost of glass and 3D composite boards is difficult to
fall in a short period of time, plastic injection phone back covers have
emerged as an efficient and low-cost alternative, and have risen rapidly.
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