EP0047559A2
Expired / Lapsed
EP
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Squeegee device and method of using the same
Assignee: Stork Brabant BV
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Filing: 1981-09-02
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Granted: —
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Expires: 2001-09-02
Abstract
Abstract A squeegee device for use in a movable stencil, comprises a support structure (1) for a squeegee element (3) which in operation is held slightly curved under some pressure in contact with the stencil, a closure strip (11) being mounted upstream of the squeegee element and also being in contact with the stencil, thus forming a gap (16) sealed at both ends, while means are provided for the supply of pressurised viscous substance to said gap.
Inventors
- 👤 Cornelis Blaak
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 02:18
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/14; B41F15/44; B41F15/46
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
159 words
A squeegee device for pressing a viscous substance through the perforations in a movable stencil on to an advancing substrate, the device being provided with a support structure for a squeegee element, a supply for the substance, and a biasing member whereby the squeegee element in a slightly curved condition and under some pressure is held in contact with the stencil, characterized by a closure strip (11) borne by the support structure (1) and being held with only its front edge (15) also under some pressure in contact with the stencil in a zone which, as considered in the direction of advance, is situated some distance upstream of the squeegee element (3) so that a passage gap (16) is formed between the strip and those edges of the squeegee element which are in contact with the stencil, means also being provided for the pressurized supply of the viscous substance and for laterally sealing off the ends of the gap.
Claim 2
Dependent Claim
159 words
A squeegee device for pressing a viscous substance through the perforations in a movable stencil on to an advancing substrate, the device being provided with a support structure for a squeegee element, a supply for the substance, and a biasing member whereby the squeegee element in a slightly curved condition and under some pressure is held in contact with the stencil, characterized by a closure strip (11) borne by the support structure (1) and being held with only its front edge (15) also under some pressure in contact with the stencil in a zone which, as considered in the direction of advance, is situated some distance upstream of the squeegee element (3) so that a passage gap (16) is formed between the strip and those edges of the squeegee element which are in contact with the stencil, means also being provided for the pressurized supply of the viscous substance and for laterally sealing off the ends of the gap.
Claim 3
Dependent Claim
32 words
A squeegee element according to claim 1, characterized in that the closure strip (11) is mounted displaceably in the support structure (1) so that the width of the gap (16) is adjustable.
Claim 4
Dependent Claim
55 words
A squeegee device according to claim 1 or 2, characterized in that the squeegee element (3) consists of a prismatic plastics bar (7), preferably of polyethylene, which, on the one hand, is borne by a L-shaped gusset (21) and which, on the other hand, is subject to the direct action of the biasing member (9).
Claim 5
Dependent Claim
48 words
A squeegee device according to any one of claims 1 to 3, characterized in that the closure strip (11) consists of plastic and rests on a metal part (13) of the support structure (1), which part extends close to the front edge (15) of the strip (Figure 5).
Claim 6
Dependent Claim
35 words
A squeegee device according to any one of the preceding claims, characterized in that the sealing means for the ends of the gap (16) consist of cellular rubber elements (31) having a closed cellular structure.
Claim 7
Independent Claim
91 words
A method of applying a viscous substance to an advancing substrate by means of a stencil, using a squeegee device according to any one of claims 1 to 5, characterized in that at least one pump is used to supply the substance ready for use, the output of the pump or pumps being kept in direct proportion to the speed of advance of the substrate while the requisite quantity of the substance applied is determined by controlling the force of the biasing member and by adjusting the width of the gap.
Claim 8
Dependent Claim
26 words
A method according to claim 6, characterized in that the drive for the viscous substance feed pump or pumps is coupled to the substrate advancing means.
Claim 9
Dependent Claim
36 words
A method according to claim 6 or 7, characterized in that the viscous substance is supplied in a foamed condition from a mixer connected both to a substance supply pump and to a metered gas supply.
References Cited (Backward Citations)
No citation records indexed.
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