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Publication numberUS3613635 A
Publication typeGrant
Publication dateOct 19, 1971
Filing dateAug 8, 1969
Priority dateMar 13, 1969
Also published asDE1912773A1
Publication numberUS 3613635 A, US 3613635A, US-A-3613635, US3613635 A, US3613635A
InventorsHans Brehm
Original AssigneeFreudenberg Carl
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Apparatus for the spot application of adhesives to continuous sheet material
US 3613635 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

United States Patent Inventor Hans Brehm Fuerth, Odenwald, Germany Appl. No. 848,459 Filed Aug. 8, 1969 Patented Oct. 19, 1971 Assignee Carl Freudenberg Weinheim, Germany Priority Mar. 13, 1969 Germany P l9 12 773.2


US. Cl 118/406, 101/119 Int. Cl B05c 3/00 Field of Search 1 18/406, 301, 312, 308, 24, 25; 101/123,126, 119, 382

MV; l07/1.6

[56] References Cited UNITED STATES PATENTS 1,541,806 6/1925 Flick 101/114 2,242,182 5/1941 McCann.. 118/312 X 2,333,382 11/1943 Kent 101/115 2,736,290 2/1956 Scholl...... 118/259 X 2,928,340 3/1960 Stein 101/120 3,091,216 5/1963 Scotti 118/406 3,196,784 7/1965 Kraft 101/123 3,343,504 9/1967 Beik 107/].6

3,421,455 1/1969 Werner 118/24 X Primary ExaminerMorris Kaplan Attorney-Burgess, Dinklage & Sprung ABSTRACT: Apparatus for spot printing a powder onto a substrate including a perforated hollow roller; means for rotating the roller relative to a textile or other substrate; and hopper means within the hollow roller for holding the powder which hopper means mouth is about equal to the diameter of the perforations in the roller and registers with the perforations only when the perforations are adjacent the substrate.


sum 2 or 3 INVENTOR HANS BREHM ATTORNEYS PATENTEDum 19 l97| sum 30F 3 NVENTOR HANS BR ATTMNE vs APPARATUS FOR THE SPOT APPLICATION OF ADIIESIVES TO CONTINUOUS SHEET MATERIAL It is in the prior art to imprint polyvinyl chloride or other plastic compositions in paste form onto continuous sheets of textiles or other materials, see Green US. Pat. No. 1,248,006. Carpets, particularly, have been provided with spots of polyvinyl chloride to prevent slipping, and padding and stiffening materials for clothing are often imprinted with thermoplastic paste compositions for ultimate adhesive use. After the paste spots dry, they remainon the material in a very uniform pattern in the form of dots of thermoplastic binding agent. A padding or lining material of this kind needs only to be laid on the surface of material that is to be padded or stiffened, with the dotted side facing it, and then the two materials can be bonded together by simple ironing, thereby eliminating the tedious sewing that was formerly required.

In many cases, it is desirable to apply to a continuous sheet material, not a paste, but a dry powder in the form of uniformly distributed dots. It can be seen that dry powder cannot be accurately imprinted in predefined dot areas by means of the conventional roller printing or rotary printing machines. These are suitable only for handling viscous pastes.

It is an object of this invention to provide an apparatus to be described hereinbelow', whereby dry powder can be applied to a continuous sheet material, in the form of small, discrete spots distributed in a predeterminedpattern over its surface.

Other and additional objects will become apparent from a consideration of this entire specification including the drawing and claims hereof.

This invention will be described with relation to the drawing, in which:

FIG. I is a diagrammatic perspective view, with parts broken away of the apparatus of the invention.

FIG. II is a sectional elevation through the apparatus of the invention.

FIG. III is similar to FIG. II showing another embodiment of the invention.

Referring now to the drawing, the apparatus of this invention comprises a perforated cylinder 1, which rolls over a continuous sheet of material 2. On the interior of the cylinder 1 there is located a hopper type of structure made up of four rods 3, 4, and 6 which extend from one end of the cylinder to the other. The rods 3 and 4 and 5 and 6 have disposed therebetween stiff plates 8 and 7, respectively. Two additional plates 9 and 10 extend from rods 4 and 6, respectively, toward each other so as to form an elongated mouth 13. These plates 9 and I0 each contact the inside wall of the perforated cylinder and are arranged such that the mouth 13 between plates 9 and 10 corresponds approximately to the diameter of a hole 11 in the perforated cylinder. The plates 9 and 10 may be pivotally attached to the rods 4 and 6 to make the mouth size adjustable.

If the hopper means is filled with powder, the powder can then emerge from a hole 11 only when the hole (perforation) is directly over the continuous sheet 2. In other words, the distance between the hole and the sheet is substantially zero at the moment in which the powder passes through the hole and lands on the sheet. In this manner, sharply defined dots are formed, each containing substantially the same quantity of powder.

If the dry powder were deposited from a perforated cylinder without the hopper structure according to the invention therein, powder would fall from those holes of the cylinder which were downwardly disposed as the cylinder rolled over the sheet material. The powder would fall from the hole even when the hole has covered only one-sixteenth to one-eighth of a turn, i.e., when the distance between the hole and the sheet amounts to from a few millimeters to a few centimeters, depending on the diameter of the cylinder and the amount of powder therein. This continued trickling of powder, however, causes such to feather out to such a degree that the deposit will be in a series of streaks rather than in precisely defined dots as desired.

The edges of plates 9 and 10 must bear against the inside of the cylinder 1 with sufficient force to prevent powder from escaping beyond the edges of plates 9 and I0, and eventually falling from holes 11 in the cylinder as the cylinder continues to roll, thus again causing smearing.

This can be accomplished in a very simple manner by arranging a magnet 12 underneath plates 9 and 10 and utilizing ferromagnetic material for these plates.

The equipment, therefore, is substantially stationary, except for the rotating cylinder 1. A magnet 12 is disposed directly beneath the tabletop. In operation, a sheet 2, disposed on a rubber belt, coming from the right in FIGS. I and 2, passes underneath the cylinder 1. This rubber belt urges the sheet 2 against the cylinder 1. If this sheet 2 is then pulled to the left, the perforated cylinder is rotated in a clockwise direction. During this rotation, the hopper system 3 to 10 inside of the cylinder precisely spans each successive hole, and precisely meters a sharply defined pile of powder onto the sheet 2 corresponding to each hole.

It has been found that this invention works quite well in practice and that'excellently precise deposition of material is accomplished. It has been found however that occasionally one of the plates 9 presses against the rotating cylinder I to an extent sufficient to be partially pressed into an aperture II. Continued rotation of the cylinder 1 has caused plate 9 to break. A preferred embodiment of this invention is shown in FIG. 3 wherein the feeding hopper and its associated plates and rods 3', 4, 5, 6, 7, 8', 9 and 10 is canted away from the direction of rotation so that there is an acute angle of attack between both the plates 9 and I0 and the inside wall of the rotating cylinder. This effectively prevents catching the plate 9 on the inside of an aperture and breaking the plate 9.

In the manufacture of iron-on stiffening materials with the aid of the above-described apparatus, the sheet containing dots is passed into a hot air chamber located as near as possible to the point of emergence of the sheet from the cylinder. This hot air chamber softens the thermoplastic powder soas to form precisely defined dots which are anchored firmly to the sheet material 2.

What is claimed is: n

1. In an apparatus for applying discontinuous dots of dry powder material in a predetermined pattern onto a substantially continuous substrate, which apparatus comprises perforated hollow roller means movable with respect to said substrate whereby to sequentially juxtapose said perforations to said substrate and to permit material in said hollow roller to pass through said perforations onto said substrate; the improvement, whereby permitting said material in dry powder form to be applied as discreet dots through said perforations, which comprises ferromagnetic hopper means with respect to said apparatus, and magnet means disposed proximate to said substrate and said hopper means on the side of said substrate directed away from said hopper which hopper means has mouth means directed toward said substrate and in contact with the inside wall of said roller, which hopper means is canted in the upstream direction and which mouth means comprises two arms both of which are canted upstream of the leading edge of a perforation in registry therewith whereby said powder material is maintained substantially only in said hopper means and passes through only those perforations in said roller means juxtaposed to said substrate and wherein both of said mouth arms form an acute angle with the trailing surface of said roller.

2. The improved apparatus claimed in claim I, wherein the mouth of said hopper means is adjustable in width and substantially corresponds to the diameter of said perforations 3. The improved apparatus claimed in claim I, wherein said hopper means is elongated and substantially coextensive in length to said roller width.

4. The improved apparatus claimed in claim 2, wherein said hopper means arms are pivotally connected to the remainder of said hopper.

cylinder and said hopper means has two lower rods extending parallel to the axis of said cylinder, which rods are joined together by substantially rigid plates, and which lower rods are pivotally connected to two moveable rods which extend therefrom and terminate, at the end thereof opposite to the end pivotally connected to said lower rods, in said mouth.

Patent Citations
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3890896 *Jan 3, 1973Jun 24, 1975Zimmer PeterTextile-printing machine
US3994220 *Jul 1, 1975Nov 30, 1976Stork Amsterdam B.V.Pressurized squeegee with stiff resilient sealing strips
US4014289 *Sep 12, 1975Mar 29, 1977Johannes ZimmerDevice for treating a web
US4016830 *Jul 16, 1975Apr 12, 1977Brown & Williamson Tobacco CorporationApparatus for dispensing spaced deposits of particulate material
US4050409 *Oct 7, 1974Sep 27, 1977Alain DuchenaudCylinder for reproducing raised patterns on all surfaces
US4076567 *Dec 9, 1975Feb 28, 1978Takiron Co., Ltd.Method of producing plastic sheets with integrated geometric decorative patterns
US4095557 *May 4, 1976Jun 20, 1978Westinghouse Electric Corp.Apparatus for making electrical coils using patterned dry resin coated sheet insulation
US4562099 *Jan 18, 1984Dec 31, 1985Molins PlcApparatus for applying adhesive
US4709631 *Jan 20, 1987Dec 1, 1987Armstrong World Industries, Inc.Method of printing a raised pattern of liquid
US4854230 *May 11, 1988Aug 8, 1989Mitsubishi Denki Kabushiki KaishaScreen printing apparatus
US4920914 *Oct 11, 1988May 1, 1990Johannes ZimmerDoctoring installation and doctoring device
US5063873 *Mar 29, 1990Nov 12, 1991Johannes ZimmerDoctor device
US5938106 *Aug 1, 1996Aug 17, 1999International Business Machines CorporationMethod and apparatus for applying solder and forming solder balls on a substrate
US6027006 *Jun 24, 1998Feb 22, 2000International Business Machines CorporationMethod and apparatus for applying solder and forming solder balls on a substrate
US6119598 *May 18, 1998Sep 19, 2000Faust Thermographic Supply, Inc.Apparatus and method for thermographic printing
US6155165 *Aug 11, 1995Dec 5, 2000Giesecke & Devrient GmbhRotary screen printing cylinder having separated ink zones
US8083658 *Dec 5, 2005Dec 27, 2011Filtrona International LimitedTobacco smoke filter production
US20080190439 *Dec 5, 2005Aug 14, 2008Serge VeluzTobacco Smoke Filter Production
US20150034679 *Jan 31, 2013Feb 5, 2015Haas Food Equipment GmbhDevice for metering and conveying viscous masses
EP0315466A2 *Nov 4, 1988May 10, 1989The Dow Chemical CompanyFormation of flexible laminates
EP0315466A3 *Nov 4, 1988Dec 6, 1989The Dow Chemical CompanyFormation of flexible laminates
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WO2012143581A1 *May 30, 2011Oct 26, 2012Advance Liberty, S.L.Method for obtaining a self-adhesive substrate to be used as a covering, resulting substrate and device for performing said method
U.S. Classification118/406, 101/119
International ClassificationB05C1/10, D06Q1/00, B41F15/46, B29C65/48, D06M17/00
Cooperative ClassificationB29C65/48, D06M17/00, D06Q1/00, B41F15/46, B05C1/10
European ClassificationB29C65/48, D06Q1/00, B05C1/10, B41F15/46, D06M17/00