GB1561708A - Facingsheet - Google Patents

Facingsheet Download PDF

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Publication number
GB1561708A
GB1561708A GB21593/77A GB2159377A GB1561708A GB 1561708 A GB1561708 A GB 1561708A GB 21593/77 A GB21593/77 A GB 21593/77A GB 2159377 A GB2159377 A GB 2159377A GB 1561708 A GB1561708 A GB 1561708A
Authority
GB
United Kingdom
Prior art keywords
foil
facing sheet
sheet
metal foil
laminate
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
Application number
GB21593/77A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HPW HERZBERGER PLATTENWERKE
Original Assignee
HPW HERZBERGER PLATTENWERKE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HPW HERZBERGER PLATTENWERKE filed Critical HPW HERZBERGER PLATTENWERKE
Publication of GB1561708A publication Critical patent/GB1561708A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/14—Covers for frames; Frameless shades
    • F21V1/16—Covers for frames; Frameless shades characterised by the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/12—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0064—Smoothing, polishing, making a glossy surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/028—Paper layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/414—Translucent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/12—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard
    • B32B2317/125—Paper, e.g. cardboard impregnated with thermosetting resin

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)

Description

(54) FACING SHEET (71) We HPW HERZBERGER PLATEN WERKE GmbH & Co., KG, a Kommanditgesellschaft organised and existing under the laws of the Federal Republic of Germany, of 3420 Herzberg/Harz, Federal Republic of Germany, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be part icularly described in any by the following statement: This invention relates to a facing or covering or jacketing sheet for covering or masking light sources, more especially for lamp shades, which is provided with patterns and/or pictures made from material which is impervious to light and/or is poorly pervious to light.
In the case of known facing sheets of this type, which are used more especially for lamp shades, the sheet consists of oilpaper, transparent leather or imitation leather or the like, the patterns being produced by printing by means of a colour paint or dye application.
It is disadvantageous that it is difficult to produce patterns which are precise and which have sharp contours and that such foils are not sufficiently resistant to wear and to ageing.
Accordingly, an object of the present invention is to provide a facing sheet with which satisfactorily translucent sharpcontoured images or illustrations can be produced and which is resistant to ageing and to wear to a high degree.
The invention provides a facing sheet for covering light sources, more especially for lamp shades, and comprising a laminate of a plurality of layers of bleached sulphide cellulose paper, impregnated with phenolic resins the laminate having been coated on one side with a metal foil which has been etched.
away at locations where the sheet is desired to be translucent to produce a pattern or picture.
The invention also provides a method of producing a facing sheet as claimed in any preceding claim, wherein a laminate comprising a plurality of layers of bleached sulphide cellulose paper impregnated with phenolic resin, are coated with a metal foil, the metal foil is partly coated with a resist to define a picture or pattern, and subsequently the unprotected areas of the foil are etched away.
It is particularly advantageous if from two to five layers of paper consisting of bleached sulphide cellulose are used, since in this way a fine optical coordination with regard to the light sources to be used can be achieved.
The outer surface of the sheet can, after the etching-away, for the protection of the copper or aluminium parts, but also for the protection of the foil locations lying therebetween, be provided with a coat of lacquer or varnish. In order to make possible a satisfactory translucency, without getting interference patterns (or centres of disturbance or faults or discontinuities), and in order moreover to bring the foils to the exact accuracy to size, it is advantageous if the foil rear sides which, in use, face a light source are provided with a finishing or finish-grinding or final rub or finish. To fill-up possible remaining unevennesses, it is moreover advantageous if also the foil rear side is provided with a coat of varnish after the grinding or polishing.
The invention will be described further, by way of example, with reference to the accompanying drawings, wherein: Figure 1 shows, in perspective representation, a table lamp, a lamp shade of which is provided with a preferred facing sheet of the invention; Figure 2 shows, on an enlarged scale, the preferred facing sheet of the invention, in section.
In accordance with Figure 1, a lamp shade 1 is provided with pictures which consist of a - copper or aluminium foil, in which respect this metal foil forms the contours of the pictures.
The metal foil is applied to a laminate made from a plurality of layers of bleached sulphide cellulose, which is saturated with phenolic resins and is etched away at the locations 3 which are to be pervious to light. As emerges from Figure 1, flat pieces of the facing sheet can be joined at their corners into a lamp shade and have, for example, a quadratic or square plan.
Figure 2 shows the facing sheet, in accordance with the invention, in section. In the embodiment in accordance with Figure 2, three layers 4 of bleached sulphide cellulose, which is impregnated with phenol resins, are provided, from 2 to 5 layers is desirable. The metal foil 7 is applied to the side 6 remote from the light source S.The metal foil is etched away at those points 8 which are desired to be pervious to light or translucent.
The outer surface 6 of the sheet is provided, after the etching-away, for the protection of the copper or aluminium parts, but also for the protectionof the translucent locations 8, with a coat 9 of varnish. The foil rear side 10 facing the light source is, to avoid interference patterns or faults and to achieve an exact accuracy to size, provided with a fine-grinding or finishing, in which respect also the rear side of the foil, as shown, can be covered with a coat 11 of varnish.
WHAT WE CLAIM IS: 1. A facing sheet for covering light sources, more especially for lamp shades, and comprising a laminate of a plurality of layers of bleached sulphide cellulose paper impregnated with phenolic resins, the laminate having been coated on one side with a metal foil which has been etched-away at locations where the sheet is desired to be translucent to produce a pattern or picture.
2. A facing sheet as claimed in Claim 1, wherein the metal foil is a copper or aluminium foil.
3. A facing sheet as claimed in Claim 1 or 2, wherein in that the paper laminate consists of from two to five layers of bleached sulphide cellulose paper.
4. A facing sheet as claimed in any preceding Claim, wherein the outer surface of the foil has been provided, after etching, with a coat of varnish.
5. A facing sheet as claimed in any preceding Claim, wherein the rear side of the sheet has been treated by fine grinding or finishing or fine polishing.
6. A facing sheet as claimed in Claim 5, wherein the rear side of the sheet is provided with a coat of varnish.
7. A method of producing a facing sheet as claimed in any preceding claim, wherein a laminate comprising a plurality of layers of bleached sulphide cellulose paper impregnated with phenolic resin, are coated with a metal foil, the metal foil is partly coated with a resist to define a picture or pattern, and subsequently the unprotected areas of the foil are etched away.
8. A method as claimed in claim 7 wherein the resist is a bituminous varnish.
9. A method as claimed in claim 7 or 8 wherein after etching the remaining resist is removed.
10. A method as claimed in claim 7, 8 or 9 wherein the side of the sheet having the metal foil is finally provided with a protective coating.
11. A method as claimed in any of claims 7 to 10, wherein the surface of the laminate remote from the foil is subjected to a finefinishing operation.
12. A method as claimed in claim 11, wherein the surface of the laminate remote from the foil is provided with a protective coating.
13. A method of producing a facing sheet substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
14. A facing sheet substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (14)

**WARNING** start of CLMS field may overlap end of DESC **. preferred facing sheet of the invention, in section. In accordance with Figure 1, a lamp shade 1 is provided with pictures which consist of a - copper or aluminium foil, in which respect this metal foil forms the contours of the pictures. The metal foil is applied to a laminate made from a plurality of layers of bleached sulphide cellulose, which is saturated with phenolic resins and is etched away at the locations 3 which are to be pervious to light. As emerges from Figure 1, flat pieces of the facing sheet can be joined at their corners into a lamp shade and have, for example, a quadratic or square plan. Figure 2 shows the facing sheet, in accordance with the invention, in section. In the embodiment in accordance with Figure 2, three layers 4 of bleached sulphide cellulose, which is impregnated with phenol resins, are provided, from 2 to 5 layers is desirable. The metal foil 7 is applied to the side 6 remote from the light source S.The metal foil is etched away at those points 8 which are desired to be pervious to light or translucent. The outer surface 6 of the sheet is provided, after the etching-away, for the protection of the copper or aluminium parts, but also for the protectionof the translucent locations 8, with a coat 9 of varnish. The foil rear side 10 facing the light source is, to avoid interference patterns or faults and to achieve an exact accuracy to size, provided with a fine-grinding or finishing, in which respect also the rear side of the foil, as shown, can be covered with a coat 11 of varnish. WHAT WE CLAIM IS:
1. A facing sheet for covering light sources, more especially for lamp shades, and comprising a laminate of a plurality of layers of bleached sulphide cellulose paper impregnated with phenolic resins, the laminate having been coated on one side with a metal foil which has been etched-away at locations where the sheet is desired to be translucent to produce a pattern or picture.
2. A facing sheet as claimed in Claim 1, wherein the metal foil is a copper or aluminium foil.
3. A facing sheet as claimed in Claim 1 or 2, wherein in that the paper laminate consists of from two to five layers of bleached sulphide cellulose paper.
4. A facing sheet as claimed in any preceding Claim, wherein the outer surface of the foil has been provided, after etching, with a coat of varnish.
5. A facing sheet as claimed in any preceding Claim, wherein the rear side of the sheet has been treated by fine grinding or finishing or fine polishing.
6. A facing sheet as claimed in Claim 5, wherein the rear side of the sheet is provided with a coat of varnish.
7. A method of producing a facing sheet as claimed in any preceding claim, wherein a laminate comprising a plurality of layers of bleached sulphide cellulose paper impregnated with phenolic resin, are coated with a metal foil, the metal foil is partly coated with a resist to define a picture or pattern, and subsequently the unprotected areas of the foil are etched away.
8. A method as claimed in claim 7 wherein the resist is a bituminous varnish.
9. A method as claimed in claim 7 or 8 wherein after etching the remaining resist is removed.
10. A method as claimed in claim 7, 8 or 9 wherein the side of the sheet having the metal foil is finally provided with a protective coating.
11. A method as claimed in any of claims 7 to 10, wherein the surface of the laminate remote from the foil is subjected to a finefinishing operation.
12. A method as claimed in claim 11, wherein the surface of the laminate remote from the foil is provided with a protective coating.
13. A method of producing a facing sheet substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
14. A facing sheet substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
GB21593/77A 1977-02-17 1977-05-23 Facingsheet Expired GB1561708A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772706727 DE2706727A1 (en) 1977-02-17 1977-02-17 CLADDING FILM FOR COVERING LIGHT SOURCES, IN PARTICULAR FOR LAMP SHADES

Publications (1)

Publication Number Publication Date
GB1561708A true GB1561708A (en) 1980-02-27

Family

ID=6001434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21593/77A Expired GB1561708A (en) 1977-02-17 1977-05-23 Facingsheet

Country Status (5)

Country Link
DE (1) DE2706727A1 (en)
FR (1) FR2381239A1 (en)
GB (1) GB1561708A (en)
IT (1) IT1084147B (en)
SE (1) SE7704348L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2355299A (en) * 1999-10-12 2001-04-18 David John Wright A lampshade with various patterns
GB2365108A (en) * 2000-07-07 2002-02-13 Designed Architectural Lightin Indirect/direct luminaire

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB370975A (en) * 1930-01-10 1932-04-11 George Fielding Colbert Improvements in or relating to an ornamental composite plate
DE1891007U (en) * 1963-11-12 1964-04-16 Georg Werner LAMP SHADE.
DE1949704U (en) * 1966-10-04 1966-11-17 Renker Belipa G M B H LAMP SHADE CARTON.
BE758627A (en) * 1969-11-07 1971-04-16 Oetiker Jakob OPTICAL STRUCTURAL ELEMENT
FR2181252A5 (en) * 1972-04-20 1973-11-30 Evangelisti Albert Decorating thin sheet metal - by incisions cut through to a coloured support
DE2505183A1 (en) * 1975-02-07 1976-08-19 Schneider & Kern Metal plate with relief type picture in its surface - is backed by light transmitting epoxy support layer
DE7521471U (en) * 1975-07-05 1976-12-30 Schoeller & Co Elektronik Gmbh, 3552 Wetter LAMP COVERING

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2355299A (en) * 1999-10-12 2001-04-18 David John Wright A lampshade with various patterns
GB2355299B (en) * 1999-10-12 2003-11-26 David John Wright Lampshade
GB2365108A (en) * 2000-07-07 2002-02-13 Designed Architectural Lightin Indirect/direct luminaire

Also Published As

Publication number Publication date
FR2381239A1 (en) 1978-09-15
DE2706727A1 (en) 1978-08-31
SE7704348L (en) 1978-08-18
IT1084147B (en) 1985-05-25

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee