DE597551C - Process for the production of projection screens - Google Patents
Process for the production of projection screensInfo
- Publication number
- DE597551C DE597551C DEP65318D DEP0065318D DE597551C DE 597551 C DE597551 C DE 597551C DE P65318 D DEP65318 D DE P65318D DE P0065318 D DEP0065318 D DE P0065318D DE 597551 C DE597551 C DE 597551C
- Authority
- DE
- Germany
- Prior art keywords
- production
- fabric
- projection screens
- mass
- rolled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Description
Es ist bereits bekannt, die Struktur dadurch herzustellen, daß man auf eine untere Stoffbahn eine knetbare Masse aufbringt und in dieser dann durch Walzen die Struktur erzeugt.It is already known to produce the structure by clicking on a lower Fabric web applies a kneadable mass and then the structure in this by rolling generated.
Beim Walzen der knetbaren Masse, etwa ίο Wachslack, haben sich in erster Linie aus dem Haftvermögen zwischen Masse und Walzenoberfläche Schwierigkeiten ergeben, die der Erzielung einer richtigen Strukturkörperform hinderlich sind. Auch die weitere Er-1.5 haltung der Strukturkörperform läßt mangels eines Schutz und Halt bietenden Körpers zu wünschen übrig.When rolling the kneadable mass, such as ίο wax varnish, have primarily come off the adhesion between the mass and the roll surface difficulties that obstruct the achievement of a correct structural body shape. Also the other Er-1.5 Maintaining the structural body shape allows in the absence of a body that offers protection and support to be desired.
Diese Schwierigkeiten werden erfindungsgemäßi dadurch beseitigt, daß in an sich bekannter Weise eine zweite Stoffbahn als Oberschicht mit aufgewalzt wird.These difficulties are addressed according to the invention eliminated by the fact that a second web of material is rolled on as a top layer in a manner known per se.
Diese Oberschicht schmiegt sich der Strukturkörperform aufs engste an, schützt und unterstützt sie bei der späteren Benutzung as des Schirms und deckt während des Walzens die Walze gegen die knetbare und klebrige Masse ab.This top layer hugs the structural shape of the body very closely, protects and supports you in the later use of the umbrella and covers while rolling the roller against the kneadable and sticky mass.
Auf der Zeichnung ist die Erfindung beispielsweise veranschaulicht; es stellen dar:
Abb. ι eine schematische Ansicht eines Stücks des fertigen Schirms, etwa sechsfach
vergrößert,The invention is illustrated by way of example in the drawing; it represent:
Fig. Ι a schematic view of a piece of the finished screen, enlarged approximately six times,
Abb. 2 einen Teilschnitt durch den Rohschirm nach dem Zusammenbringen der drei Schichten,Fig. 2 shows a partial section through the raw screen after the three have been brought together Layers,
2 die aus knetbarer Masse, z. B. Wachslack, bestehende Zwischenschicht und 1 die als Deckschicht dienende Stoffbahn.2 made of kneadable mass, z. B. wax varnish, existing intermediate layer and 1 as Covering layer of fabric.
Nachdem auf die untere Stoffbahn 3 die knetbare Masse 2 und auf diese die obere Stoffbahn 1 aufgebracht ist (Abb. 2), wird die letztere bei dem üblichen Erzeugen der Strukturf orm mittels Walzen in die knetbare Masse 2 (Abb. ι und 3) eingewalzt; bei der Herstellung des Schirms dient die Stoffbahn 1 zur Erzielung einer gleichmäßigen Oberflächenstruktur und in mechanischer Hinsicht erhöht sie die Haltbarkeit des Schirms, ohne daß der Überzug zu erneuern ist. Der Schirm ist waschbar und gegen Temperatureinflüsse unempfindlich, auch nicht feuergefährlich. Die Zusammensetzung ergibt hohe Elastizitat, so daß sich der Schirm trotz der Struktur zum Transport zusammenrollen läßt.After on the lower panel 3 the kneadable mass 2 and on this the upper web of fabric 1 is applied (Fig. 2), the the latter in the usual production of the structural shape by means of rollers into the kneadable mass 2 (Fig. Ι and 3) rolled in; In the manufacture of the screen, the fabric 1 is used for Achievement of a uniform surface structure and increased in mechanical terms the durability of the screen without having to renew the cover. The screen is washable and insensitive to temperature influences, also not inflammable. The composition results in high elasticity, so that the umbrella can be rolled up for transport despite the structure.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP65318D DE597551C (en) | Process for the production of projection screens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP65318D DE597551C (en) | Process for the production of projection screens |
Publications (1)
Publication Number | Publication Date |
---|---|
DE597551C true DE597551C (en) | 1934-05-26 |
Family
ID=7390577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP65318D Expired DE597551C (en) | Process for the production of projection screens |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE597551C (en) |
-
0
- DE DEP65318D patent/DE597551C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3802646C2 (en) | ||
DE597551C (en) | Process for the production of projection screens | |
DE2135487A1 (en) | Method for producing an in sizing surface pattern | |
DE472246C (en) | Cylindrical or pyramidal bag filter with a spring-loaded wire frame | |
DE392883C (en) | Rolling process for the production of patterned covering materials | |
DE524630C (en) | Process for the production of rollers with raised patterns from absorbent material for the production of colored figurative patterns on paper, cardboard or cardboard webs | |
DE521862C (en) | Mold with holding strips for treating socks | |
DE592954C (en) | Process for the production of rolled, including patterned glass panes | |
DE560866C (en) | Process for the production of lace straps with a soft rubber tip | |
DE472583C (en) | Process for producing decorative effects on ceramic and metal enamel goods | |
DE614097C (en) | Device for the production of an artificial fur trim from chenille or the like. | |
DE359089C (en) | Device for the production of picture frames and other ring-shaped objects by compressing paper in a mold | |
DE683793C (en) | Multi-layer wallcovering fabric made of crepe paper and cardboard interlayer | |
DE364994C (en) | Process for the preparation of paper webs for the production of book covers with highlighted bookplate locations | |
DE452204C (en) | Process for making grids | |
DE564424C (en) | Method of making patterned Lincrusta | |
DE460523C (en) | Manufacture of acetyl cellulose relief materials | |
AT119350B (en) | Method and device for the production of wound bodies for tissue or the like. | |
DE627371C (en) | Method for producing patterned hollow rubber bodies | |
DE379815C (en) | Foil made from cellulose esters for cigarette tubes | |
DE691030C (en) | Roll-up curtains made of paper or fabrics with a paper-like structure, in particular for darkening purposes | |
DE671859C (en) | Method and apparatus for manufacturing wired glass | |
DE640994C (en) | Process for the production of wood-like patterns on knife handle trays made of celluloid | |
DE486907C (en) | Process for the production of wool or cotton wadding by carding | |
DE946920C (en) | Process for the production of rubber ring bands for band stamps |