Patent ID: 8287683

Claim:
A production method for laminated glass comprising a step of performing pre-pressing by using a holding tool for pre-pressing capable of heating and pressing, wherein the holding tool includes a frame, a bag member and a supporting member for suspending the bag member from the frame, the bag member is made of a film with flexibility and airtightness, is provided with a sealable opening on a first side, is in a flat shape having a sealed periphery excluding the first side, and includes an evacuating port in the vicinity of the sealed periphery, the frame includes at least a first frame member and a second frame member disposed to oppose each other, with the first frame member and the second frame member disposed outside the periphery of the bag member, the bag member is suspended by a supporting member movably against the frame inside an area formed by connecting ends of the first frame member and the second frame member to each other in a plan view taken from a normal direction of a holding face formed by the first frame member and the second frame member, the step of performing the pre-pressing includes at least steps of: placing an unbonded body in the holding tool; sealing the opening of the bag member; pressing the unbonded body by evacuating the bag member; heating the bag member; and taking out a pre-pressed body resulting from the pre-pressing out of the holding tool.