Bag member for compression prebonding, holding tool for producing laminated glass, and device of producing laminated glass and method of producing the same

A holding tool for use in producing of laminated glass used in a process of pre-pressing of an unbonded body in which one or a plurality of glass sheets and at least one resin film are laid up, comprising:

• a bag member;
• a frame;
• and
• a supporting member for suspending the bag member from the frame,
• wherein the bag member is a flat-shaped bag member made of a film with flexibility and airtightness, is provided with a sealable opening on a first side of a circumference of the bag member, has a sealed periphery on sides excluding the first side, and is provided with an evacuating port for evacuating air from the bag member,
• 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, and
• the bag member is suspended by the 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.