Patent US3047789A successfully refreshed from Google Patents.
US3758649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing holographic replicas
Assignee: RCA Corp
•
Filing: 1971-06-21
•
Granted: 1973-09-11
•
Expires: 1991-06-21
Abstract
Abstract A holographic replica in the form of a tape comprises a thermoplastic vinyl polymeric sheet having holographic information in the form of a relief pattern embossed on a surface thereof. The polymeric sheet generally has a thickness of 1 to 6 mils. and the embossed information generally has a contour depth of about up to 500A. The process for making the holographic replicas comprises embossing a pattern consisting of peaks and valleys from either an original holographic image or a holograph master onto a thermoplastic polymeric sheet at a temperature substantially below the flow temperature of the thermoplastic sheet and with a pressure of less than about 200 psi.
Inventors
- 👤 J Frattarola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:52
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/0074; B29C; B29C59/00; B29C59/02; B29C59/04; B44; B44B; B44B5/00; B44B5/02; B44B5/028; G; G03; G03H; G03H1/00; G03H1/02; G03H1/0276; G03H1/028; B29L; B29L2031/00; B29L2031/722; B29L2031/7224; G03H2250/00; G03H2250/12; G03H2270/00; G03H2270/20; G03H2270/23; G03H2270/52; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
146 words
A method of pressing a holographic relief pattern of an object spacially modulated in at least two dimensions from a metal holographic master onto a flexible thermoplastic tape capable of being rolled on a reel to form a replica of said relief pattern having an average relief depth of about 500 A comprising the steps of a. passing said thermoplastic tape and said holographic master simultaneously through a pair of calender rollers with a pressure of from about 10 to 200 psi, b. heating said thermoplastic tape indirectly to a temperature from about 0.3 to 0.85 times the flow temperature of said thermoplastic tape as it passes through said calender rollers by heating said master in contact with said tape, c. cooling the thermoplastic replica formed thereby, d. separating the thermoplastic replica from said holographic master, and e. rolling said replica on a reel for storage.
Claim 2
Independent Claim
146 words
A method of pressing a holographic relief pattern of an object spacially modulated in at least two dimensions from a metal holographic master onto a flexible thermoplastic tape capable of being rolled on a reel to form a replica of said relief pattern having an average relief depth of about 500 A comprising the steps of a. passing said thermoplastic tape and said holographic master simultaneously through a pair of calender rollers with a pressure of from about 10 to 200 psi, b. heating said thermoplastic tape indirectly to a temperature from about 0.3 to 0.85 times the flow temperature of said thermoplastic tape as it passes through said calender rollers by heating said master in contact with said tape, c. cooling the thermoplastic replica formed thereby, d. separating the thermoplastic replica from said holographic master, and e. rolling said replica on a reel for storage.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein said thermoplastic tape has a thickness of from 1 to 6 mils and wherein said holgraphic master is of nickel.
Claim 4
Dependent Claim
24 words
The process of claim 1 wherein heat is applied to the thermoplastic tape by heating the calender roller in contact with the metal master.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein each of said calender rollers have yieldable surfaces.
Claim 6
Dependent Claim
20 words
The process of claim 2 wherein said thermoplastic tape has a maximum elongation before rupture of 5 percent at 25*C.
Claim 7
Independent Claim
138 words
A method for replicating a holographic relief pattern comprising the steps of a. passing a transparent, cast vinyl, thermoplastic tape and a holographic master simultaneously through a pair of calender rollers having yieldable surfaces at a speed of about 20 inches per second, b. applying heat to said master to bring said vinyl thermoplastic tape to a temperature of from about 0.3 to 0.85 times the centigrade flow temperature of said vinyl tape, c. applying a pressure of from about 10 - 200 psi to the vinyl tape and holographic master as they pass through said calender rollers so as to press the holographic relief pattern into said tape, d. cooling the embossed tape after it passes through said calender rollers, e. separating said embossed tape from said master, and f. winding said embossed tape onto a reel.
Claim 8
Independent Claim
138 words
A method for replicating a holographic relief pattern comprising the steps of a. passing a transparent, cast vinyl, thermoplastic tape and a holographic master simultaneously through a pair of calender rollers having yieldable surfaces at a speed of about 20 inches per second, b. applying heat to said master to bring said vinyl thermoplastic tape to a temperature of from about 0.3 to 0.85 times the centigrade flow temperature of said vinyl tape, c. applying a pressure of from about 10 - 200 psi to the vinyl tape and holographic master as they pass through said calender rollers so as to press the holographic relief pattern into said tape, d. cooling the embossed tape after it passes through said calender rollers, e. separating said embossed tape from said master, and f. winding said embossed tape onto a reel.
Claim 9
Independent Claim
121 words
A method for forming a replica of a holographic relief pattern having an average depth of 500 A which comprises a. passing a flexible, embossable thermoplastic tape and a metal master having a holographic relief pattern on a surface thereof simultaneously between a pair of calender rollers so as to press said relief pattern into said tape under pressure of from about 10 - 200 psi, b. heating said master to a tempErature which is substantially below the flow temperature of said tape while said master is in contact with said tape, c. cooling said tape while it is in contact with said master, d. separating said tape now having said relief pattern embossed on a surface therof from said master.
Claim 10
Independent Claim
121 words
A method for forming a replica of a holographic relief pattern having an average depth of 500 A which comprises a. passing a flexible, embossable thermoplastic tape and a metal master having a holographic relief pattern on a surface thereof simultaneously between a pair of calender rollers so as to press said relief pattern into said tape under pressure of from about 10 - 200 psi, b. heating said master to a tempErature which is substantially below the flow temperature of said tape while said master is in contact with said tape, c. cooling said tape while it is in contact with said master, d. separating said tape now having said relief pattern embossed on a surface therof from said master.
Claim 11
Dependent Claim
35 words
The method of claim 7 wherein said thermoplastic tape is cast vinyl having a belt side and an air side and wherein said relief pattern is pressed into said belt side of said cast vinyl.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |