Patent US3814388A successfully refreshed from Google Patents.
US3814388A
Expired / Lapsed
US
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Dyeing process for synthetic materials
Assignee: Colortronic Reinhard GmbH and Co KG
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Filing: 1972-01-28
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Granted: 1974-06-04
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Expires: 1992-01-28
Abstract
Abstract Method for adding liquid color to uncolored synthetics. The dyestuffs are metered by an electronically controlled metering pump and delivered to the synthetics just before or after the synthetic enters the plasticizer of a fabrication device.
Inventors
- 👤 P Jakob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:13
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/71; B01F35/717; B01F35/7176; B01F35/80; B01F35/83; B01F35/831; B01F35/8311; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/44; B29B7/58; B29B7/60; B29B7/74; B29B7/7461; B29B7/80; B29B7/88; B29B7/94; B29C; B29C45/00; B29C45/17; B29C45/18; B29C45/1816; B29C48/00; B29C48/25; B29C48/285; B29C48/29; B01F33/00; B01F33/80; B01F33/82; B29C48/03; B29K; B29K2105/00; B29K2105/0005; B29K2105/0032; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
64 words
A method for dyeing synthetic resin material in an intermittently working plastic processing machine having a plasticizer unit and a feed hopper for feeding colored resin particles into the plasticizer unit, characterized in the step for introducing liquid dye directly and without pre-mixing with the resin particles into the plasticizer unit at cyclic intervals corresponding to the cyclic intervals of operation of the machine.
Claim 2
Independent Claim
64 words
A method for dyeing synthetic resin material in an intermittently working plastic processing machine having a plasticizer unit and a feed hopper for feeding colored resin particles into the plasticizer unit, characterized in the step for introducing liquid dye directly and without pre-mixing with the resin particles into the plasticizer unit at cyclic intervals corresponding to the cyclic intervals of operation of the machine.
Claim 3
Dependent Claim
35 words
A method according to claim 1 comprising the steps for metering certain amounts of the liquid dye for introduction into the plasticizer unit corresponding to the cyclic intervals of the processing operation of the machine.
Claim 4
Dependent Claim
32 words
A method according to claim 2 comprising the steps for dividing the metered amounts of the liquid dye into several partial amounts which are distributed over the plasticizing period of the machine.
Claim 5
Dependent Claim
32 words
A method according to claim 3 comprising the steps for adjusting the functional relation between the amount of the liquid dye introduced into the plasticizer unit and the output of the machine.
Claim 6
Dependent Claim
19 words
A method according to claim 4 comprising the steps for metering in accordance with the output of the machine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |