US3667422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for transferring a particulate material to a web
Assignee: Sinter Ltd
•
Filing: 1968-11-14
•
Granted: 1972-06-06
•
Expires: 1988-11-14
Abstract
Abstract A device for adding a thermoplastic or thermosetting material to a receiving web includes means for distributing a particulate material throughout recesses or grooves defined on the surface of an endless member such as a continuously rotating drum. The grooves which have been filled with the material are then moved into association with a web of a material such as a textile material which is moved into contact with the drum and at the same speed as the drum while it is maintained at a temperature great enough to cause the tackiness and adherence of the particulate material to the web in the pattern defined by the grooves of the drum. The granules are advantageously directed to the top face of the drum as it rotates and the web is advantageously delivered to a location at which it feeds around a major portion of the lower part of the drum surface. A pressure roller is located at the infeed of the web and at the outfeed of the web and is advantageously maintained in a heated condition to provide a temperature to facilitate the transfer of the thermoplastic material from the grooves of the drum to the surface of the web. The particulate coating material is delivered to the backing material web at a coating station while the material is maintained at a temperature lower than that at which it is applied to the backing material. Conversely, the backing material is maintained at or heated to a temperature at which the particulate material will become tacky and move into adhering engagement with the backing material as it is transported into association therewith at the coating station.
Inventors
- 👤 Benno Saladin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:22
CPC Classifications
B; B05; B05C; B05C19/00; B05C19/04; B05D; B05D1/00; B05D1/28; D; D06; D06N; D06N3/00; D06N3/0086; D06N3/0088; D06N3/0093; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/52; D21H23/64; B05D2401/00; B05D2401/30; B05D2401/32
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
278 words
Apparatus for applying a particulate coating formed of discrete particles which particles become tacky when heated to a certain temperature, to a backing material, comprising a hopper for the discrete particles in a non-tacky condition, an endless carrier member defining a support surface for the backing material, tHe support surface of said endless carrier member being patterned for forming recesses therein arranged to receive the discrete particles, feed means for conveying the discrete particles from said hopper to the support surface of said endless carrier member and for positioning the discrete particles into the recesses formed therein and for removing any discrete particles from the remainder of the support surface with the discrete particles being at a temperature below the temperature at which they become tacky, means arranged for moving and placing the backing material into contact with the support surface of said endless carrier member including at least one pressure member arranged in juxtaposed relationship to the support surface of said endless carrier for contacting the backing material against the support surface, means for driving said endless carrier member for moving its support surface relative to said feed means and to said pressure member, and heating means associated with said support surface for heating the backing material in contact with said pressure member so that it is at a temperature at which the discrete particles become tacky when it is placed into contact with the support surface of said endless carrier member so that the discrete particles in the recesses in the support surface of said endless carrier member become tacky when contacted by the heated backing material for transferring the discrete particles to the backing material.
Claim 2
Dependent Claim
278 words
Apparatus for applying a particulate coating formed of discrete particles which particles become tacky when heated to a certain temperature, to a backing material, comprising a hopper for the discrete particles in a non-tacky condition, an endless carrier member defining a support surface for the backing material, tHe support surface of said endless carrier member being patterned for forming recesses therein arranged to receive the discrete particles, feed means for conveying the discrete particles from said hopper to the support surface of said endless carrier member and for positioning the discrete particles into the recesses formed therein and for removing any discrete particles from the remainder of the support surface with the discrete particles being at a temperature below the temperature at which they become tacky, means arranged for moving and placing the backing material into contact with the support surface of said endless carrier member including at least one pressure member arranged in juxtaposed relationship to the support surface of said endless carrier for contacting the backing material against the support surface, means for driving said endless carrier member for moving its support surface relative to said feed means and to said pressure member, and heating means associated with said support surface for heating the backing material in contact with said pressure member so that it is at a temperature at which the discrete particles become tacky when it is placed into contact with the support surface of said endless carrier member so that the discrete particles in the recesses in the support surface of said endless carrier member become tacky when contacted by the heated backing material for transferring the discrete particles to the backing material.
Claim 3
Dependent Claim
45 words
Apparatus, as set forth in claim 1, wherein said pressure member is a pressure roller and said means arranged to move and place the backing material being arranged for directing the backing material over a considerable portion of the circumferential surface of said pressure roller.
Claim 4
Dependent Claim
77 words
Apparatus, as set forth in claim 2, wherein said means to move and place the backing material including a second pressure roller spaced angularly about said drum from said pressure roller and being arranged in juxtaposed relationship to the support surface of said drum so that the backing material contacts said drum between said pressure roller and said second pressure roller, and said heating means being associated with said second pressure roller for heating the backing material.
Claim 5
Dependent Claim
36 words
Apparatus, as set forth in claim 3, wherein a heating device being located adjacent the path of the backing material extending from said second pressure roller for heating the particles which adhere to the backing material.
Claim 6
Dependent Claim
36 words
Apparatus, as set forth in claim 1, wherein said endless carrier member comprises a rotatable drum, and said means for driving said endless carrier member comprises a shaft on which said drum is mounted for rotation.
Claim 7
Dependent Claim
33 words
Apparatus, as set forth in claim 5, characterized in that cooling means is associated with said drum for maintaining said drum at a temperature at which the discrete particles do not become tacky.
Claim 8
Dependent Claim
166 words
Apparatus, as set forth in claim 5, wherein said hopper and said feed means being located above said drum, said feed means comprising an oscillatable downwardly directed guide plate positioned in the path of the discrete particles issuing from said hopper and with its lower end closely spaced above said drum, a shield member extending downwardly from the discharge end of said hopper about said guide plate and having its lower end enclosing the upper part of said drum, a doctor roller located within said shield member and in contact with the circumferential surface of said drum and positioned downstream from said guide member in the rotational direction of said drum, and a doctor blade located within said shield member and downstream from and adjacent to the contact between said roller doctor and said drum, said blade having its edge coinciding with the circumferential surface of said drum for removing discrete particles from the surface without affecting the discrete particles within the recesses in the surface.
Claim 9
Dependent Claim
36 words
Apparatus, as set forth in claim 1, wherein said means arranged to move and place the backinG material including a spherically shaped roller arranged to stretch the backing material before it passes over said pressure roller.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |