Clear, low-iron, colored, acoustic and heat-treated laminated glass manufactured as a complete build-up with drawing-based edges, holes, printing and coating options.
Glass plies: 3-19 mm | PVB: 0.38-2.28 mm | Two-ply and multi-ply constructions
Technical Overview
Specify the Whole Laminate, Not One Thickness
PVB laminated glass permanently bonds two or more glass plies with polyvinyl butyral. The glass type, heat treatment, PVB grade, interlayer thickness, edge exposure and support condition together determine whether a build-up suits the project.
Performance belongs to the assembly.A thicker interlayer alone does not create a security, hurricane, fall-protection or ballistic rating. Use a tested or engineered construction for the required load and code.
Glass ply
3-19 mm; symmetrical or mixed thickness
PVB options
Clear, colored, acoustic, white and project-specific UV-control grades
PVB caliper
0.38 / 0.76 / 1.14 / 1.52 / 2.28 mm
Heat treatment
Annealed, heat-strengthened or fully tempered
Size class
Up to approx. 2440 x 3660 mm; jumbo routes reviewed up to approx. 3300 x 6000 mm
Geometry
Flat panels, custom profiles, holes, notches and cut-outs
Finishing
Ground or polished edges, printing, compatible coatings and IGU integration
Inspection
Dimensions, glass surface, edge, interlayer alignment, bubbles and optical appearance
Interactive Build-Up Decoder
Read Laminated Glass Notation Before You Quote
Select the two glass plies and conventional PVB layer count. The result is a nominal planning value, not a structural calculation.
Common shorthand records the glass plies and number of 0.38 mm PVB layers. Procurement drawings should still state the full construction.
4 mm glass0.76 mm PVB4 mm glass
Notation
44.2
Nominal total
8.76 mm
Construction
Symmetrical
Common notation varies by market. Always issue the ply thickness, heat treatment and PVB type in words on the purchase order.
Interlayer Selection
Choose PVB by Function and Exposure
Color, acoustic behavior and edge condition require different interlayer decisions. These options are not interchangeable labels.
01
Clear PVB
General safety glazing where neutral appearance and fragment retention are the starting requirements.
Windows / doors / facades02
Acoustic PVB
Viscoelastic acoustic grades are selected as part of the complete glazing build-up and target sound spectrum.
Traffic / rail / equipment noise03
Colored & White PVB
Transparent, translucent or opaque color requires approved samples under the intended light and glass substrate.
Partitions / decorative glazing04
UV-Control Grade
Use a named interlayer datasheet where ultraviolet transmission or conservation performance is a decision factor.
Displays / selected interiors
Manufacturing Route
Clean Lay-Up and Controlled De-Airing Matter
Glass is washed and inspected before the PVB is assembled in a controlled lay-up area. Pre-lamination removes most trapped air and creates an edge seal; autoclave pressure and temperature then complete the bond.
01Cut, edge, drill and heat treat
02Wash and inspect every ply
03Controlled PVB lay-up
04De-air and pre-bond
05Autoclave lamination
06Trim, clean and inspect
Technical Education
Why Exposed PVB Edges Need Early Review
PVB is hygroscopic. Long-term edge condition can be influenced by water, cleaning chemicals, sealants, frame drainage and the quality of the laminated edge. An exposed polished edge may look simple in a rendering but creates a compatibility and durability question.
Define whether the edge is enclosed, structurally sealed or permanently exposed. Sealant compatibility and the intended climate should be confirmed before the edge detail is approved.
Protected edgeFrame / compatible sealant
Uncontrolled exposureMoisture and chemical risk
Quality Control
Inspect the Bond and the Geometry
A visually clear laminate can still fail the drawing. Inspection links optical quality to the mechanical interfaces.
Incoming glassThickness, surface, coating side
FabricationSize, holes, notches, edge quality
Heat treatmentBow, roller wave, stress and fragmentation when specified
Lay-upInterlayer type, alignment and clean environment
LaminationBubbles, haze, edge condition and bond appearance
Final releaseBuild-up, labels, packing and traceability
Application Matrix
Start with the Failure Mode and Support
The right laminate differs for an acoustic window, an overhead lite and a balustrade. Send the support condition and governing performance requirement with the drawing.
Application
Starting Route
Must Be Confirmed
Windows and doors
Clear or Low-E PVB laminate
Impact zone, IGU make-up, edge cover
Acoustic glazing
Acoustic PVB with asymmetrical plies
Target spectrum and full frame
Skylights / canopies
Heat-treated laminated glass
Overhead load and post-breakage design
Balustrades
Tempered PVB or ionoplast alternative
Support, load, fall protection and code
Decorative partitions
Colored or printed PVB laminate
Viewed side, light source and sample
Procurement FAQ
PVB Laminated Glass Questions
Short answers for build-up, processing and specification.
What does 44.2 laminated glass mean?
It commonly means 4 mm glass + two 0.38 mm PVB layers + 4 mm glass, for an approximate nominal total of 8.76 mm.
Can PVB laminated glass be tempered?
Yes. Each ply is fully fabricated and tempered before lamination; tempered glass cannot be cut or drilled afterward.
Does thicker PVB automatically make security glass?
No. Security performance depends on the entire tested assembly, including all plies, interlayers, size, support and framing.
Can holes and custom shapes be produced?
Yes. Send hole diameter, position, edge distance, notches, radii, datums and tolerances. All fabrication is completed before heat treatment and lamination.
Can PVB laminated glass be used in an IGU?
Yes. The laminate can form one lite of an insulated glass unit when coating placement, spacer, sealants and edge deletion are compatible.
What information is needed for quotation?
Provide every glass ply, heat treatment, PVB grade and thickness, overall size, edge condition, holes, coating or print side, quantity, application and required test evidence.
Send the build-up, drawing, quantity, application and required test evidence. We will review the laminate and processing route before quotation.
Saving your time and cost is our common pursuit.
Tell us the material, size, thickness, tolerance, quantity, application, and any holes, slots, edges, coating, printing, or polishing requirements. We can manufacture custom glass components from your drawing, CAD file, sketch, or sample.
