The 3 popular ways of vacuuming lamianted glass when heating in the oven are:
*silicone vacuum bag, avaialbe in in resue for many cycles
*silicone ring, suitable for curved glass
*vacuum bagging film, usually nylon film, disposable, suitable for any shape and any size of lamianted glass, very flexible, easy to use, suitable for autoclave heating, being more and more popular

And black butyl tape sealant is the tape to forming the vacuum bag, sealing the edges of the vacuum bag.
High temperature sistant,
Completely sealing,
Easy to remove after heating is done,

If you wantto learn more about the vacuuming bagging film method, please read following content:

Disposable Nylon Film Rolls for Forming Vacuum Bag for Laminating Curved Glass in Autoclave
The High Temperature Resistance Nylon Film for making vacuuming bags for laminating curved glass is best best solution for curved laminated glass in autoclave laminating.
You can cut it in various lengths and then by using black butyl tape sealant you can make a close bag around a curved glass to creating a vacuuming room.
It’s rejectable and disposal.
It’s often used in curved glass laminating, and taken into autoclave.
It’s high temperature resistance, so it won’t burn.

Vacuum Bag Tape (butyl tape sealant) for EVA PVB SGP lamination vacuum bagging films

Vacuum bag tape(butyl tape sealant) has high surface adhesion force on vacuum bag and a variety of tools. In the curing cycle it has excellent sealing, and it is very easy to remove the vacuum bag tape(butyl tape sealant) from the cold or heating surface after curing.

Application area:
(1) , Applied in between vacuum bags for vacuuming laminated glass with EVA film, PVB film, and SGP film
(2), Applied in between vacuum bag and composite tools
(3), Available being cured under room temperature to 150℃

3×12mm×15m/roll, packed in cartons, 10rolls/carton

(1), Make sure to clean water, oil, dust and other dirt on the surface where the vacuum bag tape stick to.
(2), Please store the vacuum bag tapes in cool and dry storeroom, keep them away from rain, heat resource, and stacked no more than five-story, side-release is strictly prohibited.
(3), Shelf life of vacuum bag tape: 12 months.