PVB Vs SGP | What Is Limited Glass | What Is PolyVinyl Butyral (PVB) | What Is Sentry Glass Plus (SGP)

What Is Limited Glass?

Types of Interlayer for Laminated Glass

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  • PolyVinyl Butyral (PVA)
  • Ethylene-Vinyl Acetate (EVA)
  • Sentry Glass Plus (SGP)
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What Is PolyVinyl Butyral (PVB)?

What Is Ethylene-Vinyl Acetate (EVA)?

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What Is Sentry Glass Plus (SGP)?

Difference Between PVB And SGP

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Sr.No.DetailPVBย SGP
1ManufacturerPVB is Polyvinyl butyral, many different suppliers can produce this material all around the world.SGP is an abbreviation of Sentry Glass Plus Interlayer, crated by American brand Dupont, on June 1, 2014, Kuraray Co., Ltd. became the exclusive licensee for the technology and trademark of SentryGlasยฎ.
2StrengthPVB is by far the most commonly used and specified interlayer for a wide variety of applications in construction.The newer SGP interlayer is marketed as a product that offers 5-times the tear strength and 100-times the rigidity of standard PVB.
3ThicknessThe PVB thickness is 0.38mm, 0.76mm, 1.14mm, multiple of 0.38mm,The SGP thickness is 0.89mm, 1.52mm, 2.28mm, etc.
4StiffnessThe special PVB interlayer in laminated glass can absorb the impact and resists penetration.Under extremely harsh impact, the glass might break but the glass fragments will remain firmly attached to the interlayer and not shatter like ordinary glass.This minimises the risk of injuries and ensures safety.A laminate with SGP will not pass safety standards for windshields because the SGP is stiffer and the laminated glass would be too stiff for head impact.There is a reason that SGP is not used in laminates in automobile glazing.
5Yellow IndexThe PVB yellow index is 6-12The SGP yellow index is smaller than 1.5.so the SGP laminated glass is much more clear than PVB laminated glass.
6ApplicationApplication for PVB laminated glass: railing, fence, stair, floor, shower room, tabletop, windows, glass sliding door, glass partition, glass skylight, glass curtain wall, windows, glass doors, glass facade, windshields, Bullet-proof glass, etcApplication for SGP: Bullet-proof glass, Explosion-proof glass, High-speed train windshield, Railings -SGP hurricane glass, Ceiling, skylight, staircase, steps, floor, fence, canopy, partition, etc.
7Cost-EffectivePVB is more cost-effective than SGP laminated glassSGP is more expensive than PVB laminated glass.
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