China glass marble toy glass marbles hand made glass marble

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Specification of " glass marble, toy glass marbles,hand made glass marble " Brand nameG&SAdvantageWe are an expert on hand made glass marble for 10 years in this line. All our products can pass EN71,1,2,3 ASTM F963.Type:glass marble, toy glass marbles,hand made glass marble Size suitable for printing:11mm,16mm,22mm,25mm,35mm,.42mmWeight: 25mm approx 21g16mm approx 5.5g; Technique:Machine made and hand madeMaterial:100% glassColor:due to customer's requirementSample:Free & Freight CollectTest:Can pass EN71 & ASTM Delivery time:30 days after 30% depositePort of loading:shanghai,ningbo,qingdao,lianyungangPayment terms:30 % deposite, 70% balance against the copy of B/LMOQ$3000/orderPacking:1. Color box2. Foil bag packaging3. Mesh bag packaging4. Blister packaging5.Other packs you requireUsage:1.a.glass marble game, game shooter b.glass marble collection , c.glass marble decoration:2.Aquarium and vase filler3.Christmas and Halloween decoration,4.Wedding decorations5.Special events
Technic of glass marble:
Raw materials of glass marble ball can only be glass, which is industrialized production. The main raw material are quartz sand, feldspar, calcite, glauber's salt and ore. They are heated to thousands of degrees above to reaction liquid glass. Usually children paly glass marble ball in 16mm,25mm,35mm,42mm diameter. And its production method can be described:
Making glass marble ball, first of all, all kinds of ore need to be crushed. Some powder is added into it. After composition, all things turn into glass liquid. Glass liquid cutted by machine scissors, it rolls in ball groove. Because of the effect of surface tension of globular embryo and its roller rotation, gradually form a smooth round glass ball.
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