HPL must be processed by the special machine with certain
requirement to the substrate and glue. We suggest: Before
bulky use of Zhongxing Postforming HPL, take small samples
and test them on the machine.
The quality of Substrate has great
effect on the postforming operation. First, the rate of containing
water or moisture should be about 12%. Second, the substrate
should be even, no warp, with well-sanded surface, without
dust or oil. The edge to be covered with postforming HPL
should be smooth, without ridge but kept same curve radius.
It's better to use MDF in good quality. Also please use good
urea-formaldyhyde resin as adhesive.
A. Spread the glue
on the plane part of the substrate. (No glue is allowed on
the curved surface of the substrate)
B. Put the Postforming
HPL on the substrate, put apart sufficient space in order
to carry out the postforming operation. Make it into a whole
part by hot pressure or cold pressure.
C. Push the component
into the postforming machine to perform the postforming process(If
hot pressure is adopted, postforming process must be conducted
after the component cooling down to the room temperature.).
- Postforming process:
In the process of postforming, when
the machine meet the HPL, please keep it for 5 seconds, then
rotate the HPL along the bent surface and pause 2-3 seconds
at the different part of the HPL for 5-6 times. When the
machine turns to the dead end, press for 20 seconds to ensure
that postformed HPL is sticked firmly to the substrate.