Claims
- 1. An apparatus for laminating a polymer plastic coated liner web surface to flute tip surfaces of a polymer plastic coated, single faced, corrugated web comprising:
- means for heating said flute tip surfaces and one surface side of said liner web to a tacky state of said polymer plastic coatings;
- a bonding nip between an endless belt carrying pulley and a cylindrical roller located along a continuous traveling route of said webs at a junction point therebetween whereat said heated liner web side is joined with said heated flute tip surfaces;
- pneumatic spring means for resiliently holding said roller against said nip;
- pressure control means for selectively changing the resilient holding force of said spring means; and,
- jack means between said roller and said spring means to selectively adjust the opening of said bonding nip.
- 2. An apparatus as described by claim 1 wherein said roller has a hollow interior fluid circulation conduit connected with said roller interior and chilled water circulation means for circulating chilled water through said interior.
- 3. An apparatus as described by claim 2 comprising air table means adjacent said roller for supporting double faced board product emerging from said bonding nip on a dynamic air cushion against said endless belt.
Parent Case Info
This is a division of application Ser. No. 758,040, filed Jan. 10, 1977, now U.S. Pat. No. 4,071,392.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
758040 |
Jan 1977 |
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