Technical
visit to Dongguan Longhui Architectural Glass Factory Visit
Organizer:
Materials
Division
Co-orangizer:
Date, Time
& Venue
6 October
2018 Saturday
Time and
assembly Place: 8:30 am ~ 4:00 pm at Futian Port Gate No.1
Programme
Highlights
The visitis
to learn the manufacturing process of glass production and their logistic
arrangement for the quality control of the glass production.
Registration & Enquiries
No. of Participants 20. Cost HK$200 included lunch and
transportation. For registration, please fill in the HKIE application standard
form and email to lamchising@hotmail.com.
The successful application will be notified for the payment method on or before
2 October 2018. For enquiries, please contact Ir CS Lam at 91527659.
CPD certificate will be issued after attending the factory visit.
Note:
1) The
successful applicant need not to equip with his/her own safety helmet, safety
shoes and safety vest for the visit. The host organizer will arrange safety
helmet for the visit.
2) The
host organizer has right to change the itinerary without prior notice. For
personal interest, the participants should purchase his own insurance.
3) The
seminar will be cancelled if No. 8 or higher Tropical Cyclone Warning Signal or
Black Rainstorm Warning is issued / still in effect within two hours before the
starting time.
Report
Technical Visit
to Longhui Glass Factory
A technical
visit to Longhui Glass Factory was organized on 6 October 2018. The Director – Mr.
Andrew Chiu of Longhui Glass warmly received our delegation. The representative
introduced their factory, in that Longhui was established in 1994, and the
group has 4 glass manufacturing factories. The Dongguan Factory mainly focuses
on the Hong Kong Market. Glass from production is supplied to private
developers and public housing projects. The three factories in Huizhou focus on
Mainland markets. They have acquired certification in terms of quality,
environmental and national standards. The Longhui factory has more than 60
machines for conducting the different processes of glass production. The
maximum size of glass which can be produced is about 2.9m x 6.0m.
The production
workflow of cutting, grinding, washing, tempering, IGU, lamination, silk screen
and heat soaking was also introduced. The factory has adopted a first-in-first-out
approach to managing stock levels, and all raw materials are traceable,
including glass, sealant, polyvinyl butyral (PVB) and paint.
A dust free
room has also been installed separately for lamination, silk screen and IGU
production. A laboratory was also available for product quality control. Low-e glass
products are also produced.
After the
talk, we were taken to visit their workshops. We were introduced to the process
of glass manufacturing; the cutting and edge grinding workshop, drill-hole
workshop, tempered glass workshop, jet convection combined flat tempering
furnace. A sample of tempered glass was made to show us the acceptable level of
less than 42 granular holes within 50 x 50mm square area measurement of broken
glass. We then visited the silk screen glass workshop and the dust free room
for laminated glass manufacturing. In the IGU room, which is temperature
controlled and less than 65% humidity, the polyvinyl butyral interlayer was
placed in the glass frame and then transferred to a vertical panel machine for
assembly. Desiccant is injected into the frame holes and used as an adsorbent to
de-hydrate any water between the two assembly panes. We then visited two heat soak
test Furnaces. The visit ended with a question-and-answer session.