DE1045934B - Process for the manufacture of lampshades - Google Patents

Process for the manufacture of lampshades

Info

Publication number
DE1045934B
DE1045934B DEA22217A DEA0022217A DE1045934B DE 1045934 B DE1045934 B DE 1045934B DE A22217 A DEA22217 A DE A22217A DE A0022217 A DEA0022217 A DE A0022217A DE 1045934 B DE1045934 B DE 1045934B
Authority
DE
Germany
Prior art keywords
plastic
lampshades
die
plastics
manufacture
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.)
Pending
Application number
DEA22217A
Other languages
German (de)
Inventor
Rudolf Arnold
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEA22217A priority Critical patent/DE1045934B/en
Publication of DE1045934B publication Critical patent/DE1045934B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/08Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Description

Verfahren zur Herstellung von Lampenschirmen Die Erfindung bezieht sich auf Verfahren zur Herstellung von Lampenschirmen aus Kunststoffen, bei welchem der Kunststoff auf eine als Matrize dienende Form aufgetragen wird. Es ist bekannt, Lampenschirme aus Kunststoff zu erzeugen, indem man sie in Formen gießt oder spritzt. Dieses Verfahren ist jedoch sehr unwirtschaftlich, da es eine zu große Menge verschiedener Spritzgußformen bedingt, wenn den Ansprüchen der Käufer nach einer Vielfalt der Lampenschirmgestaltungen Rechnung getragen werden soll.Method of making lampshades The invention relates to relates to processes for the manufacture of lampshades from plastics, in which the plastic is applied to a mold serving as a die. It is known, Making lampshades out of plastic by pouring or injecting them into molds. However, this method is very uneconomical since there are too many different Injection molds conditionally, if the demands of the buyer for a variety of Lampshade designs should be taken into account.

Es ist ferner bekannt, auf Formen einfacher Art Füllstoffe, wie Watte, Papierschnitzel, Stoffetzen cd. dgl., aufzutragen und dann diese Füllstoffe durch Kunststoffe miteinander zu verbinden. Hierbei bleibt aber die Struktur der Füllstoffe erhalten. Auch lassen sich keine Lampenschirme auf diesem Wege in gleichmäßig dünner Wandstärke erzeugen.It is also known to use fillers such as wadding, Shredded paper, scraps of cloth cd. Like. To apply and then these fillers through Joining plastics together. Here, however, the structure of the fillers remains obtain. Nor can lampshades be evenly thinner in this way Generate wall thickness.

Von diesen bekannten Verfahren unterscheidet sich der Erfindungsgegenstand in vorteilhafter Weise dadurch, daß der Kunststoff kalt oder warm in gelöster oder emulgierter Form auf die Matrize aufgespritzt und die Matrize in bezug auf die Spritzeinrichtung gedreht wird. Dabei hat es sich als vorteilhaft erwiesen, wenn man dem Kunststoff flammhemmende Mittel zusetzt.The subject matter of the invention differs from these known methods in an advantageous manner in that the plastic is cold or warm in dissolved or emulsified form is sprayed onto the die and the die in relation to the injection device is rotated. It has proven to be advantageous to use the plastic adds flame retardants.

Bei der Anwendung dieses neuen Verfahrens benötigt man zunächst nur ganz einfache Formen, da durch den Verzicht auf ein Gieß- oder Preßverfahren die dazu notwendigen Doppelformen aus Patrize und :Matrize entbehrlich sind. Außerdem brauchen die bei der Erfindung zu verwendenden Formen nicht aus Metall zu bestehen, da sie nicht wie Preßformen nennenswerten mechanischen Beanspruchungen ausgesetzt sind.When using this new method, you only need to begin with very simple forms, because by dispensing with a casting or pressing process the the necessary double molds made of male and female molds are dispensable. aside from that the molds to be used in the invention do not need to be made of metal, as they are not exposed to significant mechanical stresses like compression molds are.

Die Herstellung von Lampenschirmen im erfindungsaemäßen Rotations-Spritzverfahren ist sehr zeitsparend, da die auf die Form aufgespritzten Kunststoffe sofort erhärten, so daß praktisch kontinuierlich gearbeitet werden kann. Das Spritzverfahren erlaubt überdies die Herstellung von Lampenschirmen mit dünnen und dünnsten Wandstärken, und dies bei völliger Gleichmäßigkeit der Wanddicke.The production of lampshades in the rotary spraying process according to the invention is very time-saving, as the plastics sprayed onto the mold harden immediately, so that you can work practically continuously. The spraying process allowed In addition, the production of lampshades with thin and extremely thin walls, and this with complete uniformity of the wall thickness.

Dadurch, daß bei der Erzeugung der Schirme die Form an der Spritzeinrichtung vorbeigedreht wird, - oder, was dasselbe ist, durch Herumführen der Spritzeinrichtung um den stillstehenden Kern -läßt sich die Herstellungszeit verkürzen und die Bildung gleichmäßiger Wandstärken begünstigen. Infolge der Wohlfeilheit der erforderlichen Formen kann man mühelos einen großen Fo:rmvo.rrat bereitstellen, so daß die Schirmform schnell und leicht geändert, d. h. den Wünschen der Käufer angepaßt werden kann, wobei zusätzlich das Schirmmaterial hinsichtlich Färbung od. dgl. ebenso leicht gewechselt werden kann.In that when the screens are produced, the mold on the spray device is turned past, - or, what is the same, by moving the spray device around The production time and the formation can be shortened around the stationary core favor uniform wall thicknesses. As a result of the cheapness of the required Forms one can effortlessly provide a large form, so that the screen form changed quickly and easily, d. H. can be adapted to the wishes of the buyer, in addition, the screen material or the like with regard to coloration is just as light can be changed.

Zur Erhöhung der Leuchtkraft können den Kunststoffen optische Weißtöner oder Blankophor.e zugesetzt werden. Als Kunststoffe selbst eignen sich besonders Polymerisations-Thermoplaste, wie PolvvinyIabkömmlinge usw. Man kann ferner Polyamide, Polymeth.ane verwenden oder Kondensationsharze aus Harnstoff, Thioharnstoff, Melamin, Polyester usw. verwenden, die in vorkondensiertem Zustand vorliegen und durch latente Hei.ßbärter oder andere Reaktionsbeschleuniger in der Kälte oder Hitze ausgehärtet werden.Optical whiteners can be added to the plastics to increase the luminosity or Blankophor.e are added. As plastics themselves are particularly suitable Polymerization thermoplastics, such as PolvinyIabkändlinge etc. One can also polyamides, Use polymeth.ane or condensation resins made from urea, thiourea, melamine, Use polyester, etc., which are in a precondensed state and due to latent Hot beard or other reaction accelerators hardened in the cold or heat will.

Zur Verstärkung können Fasern oder Quer- bzw. Längsrippen eingearbeitet werden. Solche Verstärhungen bestehen vorteilhafterweise aus gewebten oder geflochtenen Glasfasern oder Faservliesen aus wolkenlosem Natronzellstoff, aus Folien aus Glasfaser oder Kunststoff u. dgl.Fibers or transverse or longitudinal ribs can be incorporated for reinforcement will. Such reinforcements are advantageously made of woven or braided Glass fibers or nonwovens made from cloudless soda cellulose, made from sheets made from glass fiber or plastic and the like.

Das Spritzmaterial oder auch der Untergrund oder die Verankerungselemente, die eingelegt oder eingespritzt sein können, können die verschiedensten Einfärbungen erhalten. Man ist dadurch in der Lage, die mannigfaltigsten Fa.rb- und Durchscheineffekte zu erzielen und stabile, selbsttragende Schirme auf einfache und schnelle Weise zu erhalten. Auf die noch feuchte Oberfläche des Kunststoffauftrages können bunte,oder einfarbige Fasern aufgesprüht werden, um einen samtartigen Affekt zu erzielen.The spray material or the subsurface or the anchoring elements, which can be inserted or injected can have a wide variety of colors obtain. This enables you to see the most varied of color and transparency effects to achieve and stable, self-supporting umbrellas in a simple and fast way to obtain. Colorful, or single-colored fibers are sprayed on to achieve a velvety affect.

Claims (2)

PATENTANSPRÜCHE: 1. Verfahren zur Herstellung von Lampenschirmen aus Kunststoffen, bei welchem der Kunststoff auf eine als Matrize dienende Form aufgetragen wird, dadurch gekennzeichnet, daß der Kunststoff kalt oder warm in gelöster oder emul:gierter Form auf die Matrize aufgespritzt und die Matrize in bezug auf die Spritzeinrichtung gedreht wird. PATENT CLAIMS: 1. Process for making lampshades from Plastics, in which the plastic is applied to a mold that serves as a die is, characterized in that the plastic is cold or warm in dissolved or emulsified form sprayed onto the die and the die in is rotated with respect to the spray device. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daB dem Kunststoff fiammhemmende Mittel zugesetzt werden. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 505 872, 570 463, 599 374; deutsche Gebrauchsmuster Nr. 1660 843, 1686 018; britische Patentschrift Nr. 546 719.2. The method according to claim 1, characterized in that flame retardants are added to the plastic. Considered publications: German Patent Nos. 505 872, 570 463, 599 374; German utility model No. 1660 843, 1686 018; British Patent No. 546 719.
DEA22217A 1955-03-07 1955-03-07 Process for the manufacture of lampshades Pending DE1045934B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA22217A DE1045934B (en) 1955-03-07 1955-03-07 Process for the manufacture of lampshades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA22217A DE1045934B (en) 1955-03-07 1955-03-07 Process for the manufacture of lampshades

Publications (1)

Publication Number Publication Date
DE1045934B true DE1045934B (en) 1958-12-11

Family

ID=6925121

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA22217A Pending DE1045934B (en) 1955-03-07 1955-03-07 Process for the manufacture of lampshades

Country Status (1)

Country Link
DE (1) DE1045934B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE505872C (en) * 1928-06-26 1930-08-26 Gertrud Eppinger Geb Hellner Bowls, screens or the like for lighting fixtures
DE570463C (en) * 1930-11-22 1933-02-16 Albert Blomberg Process for the production of seamless translucent screens for lighting fixtures
DE599374C (en) * 1931-09-16 1934-06-30 Edmund Boehm & Co Process for the production of translucent moldings
GB546719A (en) * 1941-03-05 1942-07-28 Rowley Gallery Ltd Improvements in and relating to lampshades
DE1660843U (en) * 1953-06-10 1953-08-06 J Winzen Fa LAMP SHADE WITH TEXTILE FIBER APPLICATION.
DE1686018U (en) * 1954-08-02 1954-10-28 J H Benecke Fa MATERIAL FOR LAMP SHADE OR OTHER LIGHTING EQUIPMENT.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE505872C (en) * 1928-06-26 1930-08-26 Gertrud Eppinger Geb Hellner Bowls, screens or the like for lighting fixtures
DE570463C (en) * 1930-11-22 1933-02-16 Albert Blomberg Process for the production of seamless translucent screens for lighting fixtures
DE599374C (en) * 1931-09-16 1934-06-30 Edmund Boehm & Co Process for the production of translucent moldings
GB546719A (en) * 1941-03-05 1942-07-28 Rowley Gallery Ltd Improvements in and relating to lampshades
DE1660843U (en) * 1953-06-10 1953-08-06 J Winzen Fa LAMP SHADE WITH TEXTILE FIBER APPLICATION.
DE1686018U (en) * 1954-08-02 1954-10-28 J H Benecke Fa MATERIAL FOR LAMP SHADE OR OTHER LIGHTING EQUIPMENT.

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