Borosilicate glassware manufacturing
In year 2018, SHULOPAL started the business of borosilicate glassware, with daily production of 163,000 pcs of pressed items.
Introduction
The borosilicate glass food containers,bakeware, mixing bowls are made by press process. A molten glass gob falls onto the bottom mold of the press, and the punch above presses the glass block into the desired shape.
Glass furnaces
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Porduciton lines
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Daily production by pieces
128000
Number of workers
285
How to make Pressed Borosilciate Glassware Step by Step
Step#1 Raw Material
SHULOPAL borosilicate glass is made from natural minerals, with high-quality quartz sand as the main raw material.
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Step#2 Furnace Melting
Two fully electric kilns with zero pollution and zero exhaust emissions. Raw materials are melted at temperatures above 1800°C and mixed thoroughly. Daily output capacity is 80 tons.
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Step#3 Press Forming
Molten glass chunks are placed onto the bottom mold of the press, and the upper punch presses the glass into the desired shape. Equipped with 4 fully automatic pressing machine, the daily output is approximately 130,000 pieces.
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Step#4 Polishing
The inner and outer surface and rim of the pressed products usually require polishing by fire.
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Step#5 Annealing
After maintaining a constant temperature and uniform heating in the annealing furnace for a certain period, the glass is slowly cooled to eliminate or reduce thermal stress caused by rapid and uneven temperature changes during production, thereby improving the product's heat resistance and impact strength.
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Step#6 Finished product QC
SHULOPAL’s quality inspection team conducts a full inspection of all finished products after annealing according to the inspection standards.
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Step#7 Packaging
Assemble lids and other accessories , and package them securely according to the customer's requirements.
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Step#8 Pre-shipment inspection
Each order is regularly sampled and inspected according to the specified AQL standards before shipment. SHULOPAL only allows qualified products to be delivered to our customers.
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Step#9 Loading
SHULOPAL pays close attention to every customer requirement, including container weight, carton orientation, loading sequence, and safety nets.
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