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1. (WO1994001222) APPARATUS AND METHODS FOR APPLYING DISCRETE FOAM COATINGS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1994/001222 International Application No.: PCT/US1993/006426
Publication Date: 20.01.1994 International Filing Date: 08.07.1993
Chapter 2 Demand Filed: 07.02.1994
IPC:
B05B 7/08 (2006.01) ,B05C 5/02 (2006.01) ,B05D 1/26 (2006.01) ,B05D 3/04 (2006.01) ,B29C 44/46 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
05
SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
B
SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
7
Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
02
Spray pistols; Apparatus for discharge
08
with separate outlet orifices, e.g. to form parallel jets, to form intersecting jets
B PERFORMING OPERATIONS; TRANSPORTING
05
SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
C
APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
5
Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
02
from an outlet device in contact, or almost in contact, with the work
B PERFORMING OPERATIONS; TRANSPORTING
05
SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
D
PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
1
Processes for applying liquids or other fluent materials
26
performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
B PERFORMING OPERATIONS; TRANSPORTING
05
SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
D
PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
3
Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
04
by exposure to gases
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44
Shaping by internal pressure generated in the material, e.g. swelling, foaming
34
Component parts, details or accessories; Auxiliary operations
36
Feeding the material to be shaped
46
into an open space or onto moving surfaces, i.e. to make articles of indefinite length
Applicants:
NORDSON CORPORATION [US/US]; 28601 Clemens Road Westlake, OH 44145, US
Inventors:
RATERMAN, John; US
BENECKE, Jurgen; DE
CIEPLIK, Arthur; DE
BURMESTER, Thomas; DE
GILL, Michael, L.; US
Agent:
STALLARD, David, S. ; Wood, Herron & Evans 2700 Carew Tower Cincinnati, OH 45202, US
LLOYD WISE, TREGEAR & CO.; Norman House 105-019 Strand London WC2R OAE, GB
Priority Data:
07/910,76808.07.1992US
Title (EN) APPARATUS AND METHODS FOR APPLYING DISCRETE FOAM COATINGS
(FR) APPAREIL ET PROCEDES POUR APPLIQUER DES REVETEMENTS DE MOUSSE DISCONTINUS
Abstract:
(EN) Apparatus and methods for producing intermittent, discrete patterns (123) of foam coating material, onto discrete substrates (120) or substrate areas, where the patterns have sharp, square leading (121) and trailing (122) edges, as well as side edges (175, 176). A slot nozzle die has elongated air slots (61, 62) along the slot extrusion opening (40). Air flow is initiated from both air slots (61, 62) prior to the initiation of the foam flow. Also, the air flow is continued beyond that point in time when the foam flow ceases. The delays between the operations of the air flow and the foam coating flow are on the order of micro seconds. Alternatively, the lead and lag air start and stop times on each side of the foam coating material are different to control the exact disposition of the square cut-on and square cut-off coating edge (121, 122) on the substrate.
(FR) Sont décrits un appareil et des procédés pour produire des configurations intermittentes et discontinues (123) de matériau de revêtement en mousse, sur des substrats discontinus (120) ou des régions de substrat. Ces configurations présentent des bords avant (121) et arrière (122) nets et carrés, ainsi que des bords latéraux (175, 176). Une filière plate comporte des fentes d'air allongées (61, 62) le long de l'ouverture plate d'extrusion (40). Un flux d'air est amorcé à partir des deux fentes d'air (61, 62) avant l'amorce du flux de mousse. De même, le flux d'air est maintenu après la cessation du flux de mousse. Les décalages entre les mises en action du flux d'air et du flux de revêtement de mousse sont de l'ordre des microsecondes. En variante, l'avance et le retard au démarrage et à l'arrêt du flux d'air de chaque côté du matériau de revêtement en mousse sont différents pour moduler la disposition exacte des bords carrés avant et arrière (121, 122) du revêtement coupés nets sur le substrat.
Designated States: AT, AU, BB, BG, BR, BY, CA, CH, CZ, DE, DK, ES, FI, GB, HU, JP, KP, KR, KZ, LK, LU, MG, MN, MW, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SK, UA, VN
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0651677JPH07508923AU1993046683