Perimeter pressure seal module
AssigneeMoore Business Forms, Inc.
InventorRebecca L. Parker
Life of this patent
Estimating the term…
Abstract
A portable perimeter pressure sealer for sealing pressure sensitive adhesive strips along perimeter edges of a business form includes two pair of sealer wheels, the upper wheel of each pair being angularly movable relative to the lower wheel of each pair to insure uniform application of sealing pressure to a form passing therebetween. The upper wheels have peripheral pressure sealing surfaces which are biased into non-parallel relationship when no form is present between the respective sealer wheel pairs, but which are forced into a parallel relationship upon introduction of a form between the nips of the respective roll pairs.
Claims39
A pressure sealer for activating a pressure sensitive adhesive strip between at least a pair of form parts comprising:
- a first frame;
- at least a first pair of cooperating sealer wheels having first and second peripheral sealing surfaces, respectively, said sealer wheels rotatably mounted in said first frame;
- means for causing one of the first and second peripheral sealing surfaces to assume a non-parallel orientation with respect to the other of the first and second peripheral sealing surfaces when no form parts are present between the sealer wheels, and for causing the first and second peripheral sealing surfaces to assume a substantially parallel orientation when the form parts are introduced between the sealer wheels, said means exerting compressive force between said first and second peripheral sealing surfaces sufficient to activate the pressure sensitive adhesive strip when the form parts are introduced between the sealer wheels.
A modular pressure sealer for activating at least one pressure sensitive adhesive strip between two or more form parts comprising;
- a front frame having upper and lower portions;
- a rear frame extending substantially parallel and spaced from said front frame, wherein said lower portion of said front frame is rigidly secured to said rear frame and said upper portion of said front frame is movable relative to both said lower portion of said front frame and to said rear frame;
- two pair of sealer wheels, each pair including an upper sealer wheel mounted on the upper portion of the front frame and a lower sealer wheel mounted on the lower portion of the front frame, said upper and lower sealer wheels of each pair having vertically aligned peripheral sealing surfaces for engaging opposite sides of the form parts, wherein one sealer wheel of each pair of sealer wheels is biased toward the other sealer wheel of each pair of sealer wheels to thereby exert compressive forces on the form parts sufficient to activate the adhesive strip between said form parts.
A pressure sealer for activating a pressure sensitive adhesive strip between at least a pair of form parts comprising:
- a first frame having upper and lower portions and a flexible connection therebetween;
- a second frame spaced from and substantially parallel to said first frame, said lower portion of said first frame being rigidly secured to said second frame, and said upper portion of said first frame being resiliently connected to said second frame;
- a first pair of cooperating sealer wheels having first and second peripheral sealing surfaces, respectively, said sealer wheels rotatably mounted in said first frame, one of said first pair of sealer wheels mounted in the upper portion of said first frame, and the other of said pair of sealer wheels mounted in the lower portion of said frame;
- and
- means causing said first and second peripheral sealing surfaces to assume a substantially parallel orientation when the form parts are introduced between the sealer wheels.
A modular pressure sealer for activating at least one pressure sensitive adhesive strip between two or more form parts comprising;
- a front frame having upper and lower portions;
- a rear frame extending substantially parallel and spaced from said front frame;
- two pair of sealer wheels, each pair including an upper sealer wheel mounted on the upper portion of the front frame and a lower sealer wheel mounted on the lower portion of the front frame, said upper and lower sealer wheels of each pair having vertically aligned peripheral sealing surfaces for engaging opposite sides of the form parts, wherein one sealer wheel of each pair of sealer wheels is biased toward the other sealer wheel of each pair of sealer wheels to thereby exert compressive forces on the form parts sufficient to activate the adhesive strip between said form parts, and wherein first spring means are provided between said upper and lower portions of said front frame, and second spring means are provided between said upper portion of said front frame and said rear frame.
Dependencies are inferred from the claim text.