US4913858A
Expired / Lapsed
US
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Method of embossing a coated sheet with a diffraction or holographic pattern
Assignee: Dennison Manufacturing Co
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Filing: 1988-10-03
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Granted: 1990-04-03
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Expires: 2008-10-03
Abstract
Abstract A method for decoration of paper of plastic sheeting and other substrates, involving a novel technique for coating and embossing the substrate. The paper or plastic sheeting is supplied with a coating of thermosensitive material, as by extrusion. The coated sheet is heated to adequately soften the coating, such as by use of a heated cylinder, and remote heat sources such as infrared heaters. The softened sheet surface is then decorated using an embossing member, to provide a diffraction pattern or hologram. Use of an embossment pattern of lesser depth than the surface roughness of the sheet before embossing provides attractive decorative patterns.
Inventors
- 👤 Richard G. Miekka
- 👤 Thomas D. Bushman
- 👤 Arthur W. Taylor
- 👤 Tim Parker
- 👤 Dennis R. Benoit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:59
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/02; B29C59/04; B29C59/046; B29C59/022; B42; B42D; B42D25/00; B42D25/30; B42D25/328; B42D25/40; B42D25/405; B42D25/425; B44; B44B; B44B5/00; B44B5/0004; B44B5/0009; B44B5/009; G; G03; G03H; G03H1/00; G03H1/02; G03H1/0276; G03H1/028; B29C2059/023; B29L; B29L2031/00; B29L2031/722; B29L2031/7224; B32; B32B; B32B2309/00; B32B2309/02; B42D2033/30; B42D25/45; B42D25/455; G03H2250/00; G03H2250/12
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
143 words
The method of decorating sheeting which comprises the steps of: A. providing a substrate comprising paper; B. providing a coating of thermoplastic material comprising styrene butadiene on a surface of said substrate forming a multilayer sheeting, said thermoplastic material containing a hydroxylated polysiloxane release agent; C. heating the coating before embossing to a temperature above its softening temperature; D. embossing said sheeting by embossing the thermoplastic coating on said substrate with a diffraction or holographic pattern, said embossing achieved with an embossing roller which comes into pressure contact with said coating; said embossing roller being at a temperature below the softening temperature of the thermoplastic coating during embossing said embossing being carried out at speeds of between about 100 to 800 ft/min of said sheeting, and wherein, the depth of surface roughness of said substrate before embossing exceeds the depth of the embossment.
Claim 2
Independent Claim
143 words
The method of decorating sheeting which comprises the steps of: A. providing a substrate comprising paper; B. providing a coating of thermoplastic material comprising styrene butadiene on a surface of said substrate forming a multilayer sheeting, said thermoplastic material containing a hydroxylated polysiloxane release agent; C. heating the coating before embossing to a temperature above its softening temperature; D. embossing said sheeting by embossing the thermoplastic coating on said substrate with a diffraction or holographic pattern, said embossing achieved with an embossing roller which comes into pressure contact with said coating; said embossing roller being at a temperature below the softening temperature of the thermoplastic coating during embossing said embossing being carried out at speeds of between about 100 to 800 ft/min of said sheeting, and wherein, the depth of surface roughness of said substrate before embossing exceeds the depth of the embossment.
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein the roughness of said substrate exceeds one micron and the depth of said embossment is less than one micron.
Claim 4
Dependent Claim
38 words
The method of claim 1 wherein the depth of surface roughness of said coating is greater than 0.7 microns, and the depth of the embossment is less than the depth of surface roughness of the coating before embossing.
Claim 5
Dependent Claim
23 words
The method of claim 1 wherein the embossing member during embossing is at a temperature below the self-adhesive temperature of the thermoplastic coating.
Claim 6
Dependent Claim
21 words
The method of claim 1 wherein the embossing member during embossing is at a temperature between about 100° to 200° F.
Claim 7
Dependent Claim
59 words
The method of claim 1 wherein the embossing is accomplished by passing said sheeting being embossed between an embossing roller and a nip roller, and wherein the force applied between the embossing roller and nip roller during embossing is in the range between about 50 to 1000 pounds per lineal inch along the length of contact of said rollers.
Claim 8
Dependent Claim
35 words
The method of claim 6 wherein the embossing force applied between the embossing roller and nip roller is between about 100 to 500 pounds per lineal inch along the length of contact of said rollers.
Claim 9
Dependent Claim
35 words
The method of claim 7, wherein the contact time in which the embossing roller and nip roller contact the sheeting to effect embossing, is in a range between about 1 millisecond to about 40 milliseconds.
Claim 10
Dependent Claim
22 words
The method of claim 1 wherein the thermoplastic coating before embossing is in a range between about 250° F. and 350° F.
Claim 11
Dependent Claim
24 words
A method in claim 1 wherein the heating of said coating before embossing is accomplished with at least one heater not contacting the coating.
Claim 12
Dependent Claim
32 words
A method as in claim 10 wherein at least one of said heaters not contacting the coating is an infrared heater and operates at a heater surface temperature of about 1000° F.
Claim 13
Dependent Claim
14 words
The method of claim 1 further including the step of metallizing the embossed coating.
Claim 14
Dependent Claim
22 words
The method of claim 1 wherein the substrate is paper having a depth of surface roughness between about 1.0 and 5.0 microns.
Claim 15
Dependent Claim
19 words
The method of claim 1 wherein the depth of the embossment is between about 0.1 to about 0.5 microns.
Claim 16
Dependent Claim
26 words
The method of claim 1 further comprising the step of filling in said embossed pattern at least in parts with an ink or lacquer coating material.
Claim 17
Independent Claim
153 words
The method of decorating sheeting which comprises the steps of: A. providing a substrate comprising paper, B. providing a coating of thermoplastic material on a surface of said substrate forming a multilayer sheeting, said thermoplastic material selected from the group consisting of polyethylene, styrene acrylate, styrene butadiene and polyvinylacetate, said thermoplastic material further containing a hydroxylated polysiloxane. C. heating the coating before embossing, to a temperature above its softening temperature, D. embossing said sheeting by embossing the thermoplastic coating on said substrate with a diffraction or holographic pattern, said embossing achieved with an embossing roller which comes into pressure contact with said coating, said embossing roller being at a temperature below the softening temperature of the thermoplastic coating during embossing, embossing being carried out at speeds between about 100 to 800 ft/min of said sheeting, and wherein the depth of surface roughness of said substrate before embossing exceeds the depth of the embossment.
Claim 18
Independent Claim
153 words
The method of decorating sheeting which comprises the steps of: A. providing a substrate comprising paper, B. providing a coating of thermoplastic material on a surface of said substrate forming a multilayer sheeting, said thermoplastic material selected from the group consisting of polyethylene, styrene acrylate, styrene butadiene and polyvinylacetate, said thermoplastic material further containing a hydroxylated polysiloxane. C. heating the coating before embossing, to a temperature above its softening temperature, D. embossing said sheeting by embossing the thermoplastic coating on said substrate with a diffraction or holographic pattern, said embossing achieved with an embossing roller which comes into pressure contact with said coating, said embossing roller being at a temperature below the softening temperature of the thermoplastic coating during embossing, embossing being carried out at speeds between about 100 to 800 ft/min of said sheeting, and wherein the depth of surface roughness of said substrate before embossing exceeds the depth of the embossment.
Claim 19
Independent Claim
154 words
The method of decorating sheeting which comprises the steps of: A. providing a substrate selected from the group consisting of paper and heat resistant plastic film, B. providing a coating of thermoplastic material on a surface of said substrate forming a multilayer sheeting, said thermoplastic material containing a release agent; C. heating the coating before embossing, to a temperature above its softening temperature and in a range between about 250° F. and 450° F., D. embossing said sheeting by embossing the thermoplastic coating on said substrate with a diffraction or holographic pattern, said embossing achieved with an embossing roller which comes into pressure contact with said coating, said embossing roller being at a temperature below the softening temperature of the thermoplastic coating during embossing, said embossing roller being at a temperature between about 100° F. to 200° F., said embossing being carried out at speeds between about 100 to 800 ft/min of said sheeting.
Claim 20
Independent Claim
154 words
The method of decorating sheeting which comprises the steps of: A. providing a substrate selected from the group consisting of paper and heat resistant plastic film, B. providing a coating of thermoplastic material on a surface of said substrate forming a multilayer sheeting, said thermoplastic material containing a release agent; C. heating the coating before embossing, to a temperature above its softening temperature and in a range between about 250° F. and 450° F., D. embossing said sheeting by embossing the thermoplastic coating on said substrate with a diffraction or holographic pattern, said embossing achieved with an embossing roller which comes into pressure contact with said coating, said embossing roller being at a temperature below the softening temperature of the thermoplastic coating during embossing, said embossing roller being at a temperature between about 100° F. to 200° F., said embossing being carried out at speeds between about 100 to 800 ft/min of said sheeting.
Claim 21
Dependent Claim
17 words
The method of claim 17 wberein the substrate is a heat-resistant plastic film supporting the thermoplastic coating.
Claim 22
Dependent Claim
24 words
The method of claim 18 wherein the thermoplastic coating has a softening temperature below the temperature wherein the heat-resistant plastic film begins to distort.
Claim 23
Dependent Claim
30 words
The method of claim 19 wherein the temperature of the thermoplastic coating during embossing is above its softening temperature but below the heat-distortion temperature for the supporting heat-resistant plastic film.
Claim 24
Dependent Claim
16 words
The method of claim 17 wherein the coating of thermosensitive material contains a polysiloxane release agent.
Claim 25
Dependent Claim
19 words
The method of claim 21 wherein the embossing is achieved with an embossing member comprising a metallized plastic film.
Claim 26
Dependent Claim
36 words
The method of claim 21 wherein said thermoplastic coating has opposed surfaces of which an outer surface is embossed and an underlying surface is metallized; thereby to provide an embossed metallized member at relatively high speeds.
Claim 27
Dependent Claim
26 words
The method of claim 21 wherein the thermoplastic coating contains an opaque or tinted material; thereby to permit the embossed coating to have a metallic-like lustre.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |