METHOD FOR PRODUCING LAMINATED EMBOSSED WEBS

• US 3,867,225 A
• Filed: 04/30/1973
• Issued: 02/18/1975
• Est. Priority Date: 01/23/1969
• Status: Expired due to Term

• Current Assignee: Ernst Daniel Nystrand
• Original Assignee: Ernst Daniel Nystrand
• Inventors: Nystrand, Ernst Daniel
• Primary Examiner(s): Van Horn, Charles E.
• Assistant Examiner(s): Simmons, David A.
• Application Number:
  US05/355,565
• Time in Patent Office: 659 Days
• Field of Search: 156/219,220,209,290,291,292
• US Class Current: 156/209
• CPC Class Codes: B31F 1/07 Embossing , i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profilesB31F1/128 takes precedence; corrugating B31F1/20; embossing in combination with printing B41F19/02, B41M1/24; typewriters for embossing B41J3/38; stamping in combination with deforming B41K3/36
• CPC Class Codes: B31F 2201/0725 Hardness
• CPC Class Codes: B31F 2201/0728 Material
• CPC Class Codes: B31F 2201/073 Rollers having a multilayered structure
• CPC Class Codes: B31F 2201/0733 Pattern
• CPC Class Codes: B31F 2201/0738 Cross sectional profile of the embossments
• CPC Class Codes: B31F 2201/0764 the layers being nested
• CPC Class Codes: B31F 2201/0787 Applying adhesive
• CPC Class Codes: B31F 2201/0792 Printing
• CPC Class Codes: D21H 27/40 at least one of the sheets being non-planar, e.g. crêped crêping or corrugating paper B31F
• CPC Class Codes: Y10T 156/1023 Surface deformation only [e.g., embossing]
• CPC Class Codes: Y10T 156/1039 Surface deformation only of sandwich or lamina [e.g., embossed panels]
• CPC Class Codes: Y10T 428/24678 Waffle-form

Abstract

A method for producing laminated embossed webs useful as toweling, napkins, placemats and the like. The method employs a novel arrangement of embossing and laminator rolls to achieve a nested configuration of the embossed, inwardly-extending projections, and avoids the speed limitations inherent in prior machines.

Claims

1. A method for producing laminated embossed webs comprising separately embossing two webs each with a pattern of projections of about 10 to about 200 per square inch and a height of about 0.01 to about 0.05 inches, applying adhesive to at least some of the projections of one of said webs while the same is supported on an embossing roll, orienting said webs so that the projections face each other and interlace with each other so as to provide air spacing in the interlacing, and applying a linear laminating pressure by passing said webs through the nip defined by a marrying roll and the embossing roll which provided the projections on said one web to join said webs while said one web has the projections thereon supported and while maintaining the hardness of said marrying roll and the pressure in said nip to prevent distortion of the projections of the other said webs.

2. The method of claim 1 in which said laminating pressure is of the order of 50-60 pounds per linear inch.