ES357943A1 - Wall panel that can be written on with chalk - Google Patents

Wall panel that can be written on with chalk

Info

Publication number
ES357943A1
ES357943A1 ES357943A ES357943A ES357943A1 ES 357943 A1 ES357943 A1 ES 357943A1 ES 357943 A ES357943 A ES 357943A ES 357943 A ES357943 A ES 357943A ES 357943 A1 ES357943 A1 ES 357943A1
Authority
ES
Spain
Prior art keywords
chalk
written
wall panel
projections
hollows
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
ES357943A
Other languages
Spanish (es)
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.)
Axalta Coating Systems Germany GmbH and Co KG
Original Assignee
Dr Kurt Herberts and Co GmbH
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 Dr Kurt Herberts and Co GmbH filed Critical Dr Kurt Herberts and Co GmbH
Publication of ES357943A1 publication Critical patent/ES357943A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04—Blackboards
    • B43L1/10—Writing surfaces thereof

Landscapes

  • Drawing Aids And Blackboards (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)

Abstract

A wall panel that can be written on with chalk or similar writing material so that it can be used as a blackboard consists of a plastic laminate with an irregular mat surface in the form of projections and hollows, every 3rd to 8th projection projecting from 20 to 80% and preferably 30 to 40% beyond the average height of the other projections. Further the difference between the greatest height of the projections and lowest depth of the hollows forming the surface is from 5 to 20 Á and preferably 10 Á. The surface is prepared by compressing the laminate with a plate having a surface which is a negative of the required surface.
ES357943A 1967-10-31 1968-09-07 Wall panel that can be written on with chalk Expired ES357943A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1967H0060673 DE1978995U (en) 1967-10-31 1967-10-31 WALL PANEL.

Publications (1)

Publication Number Publication Date
ES357943A1 true ES357943A1 (en) 1970-04-01

Family

ID=7161073

Family Applications (2)

Application Number Title Priority Date Filing Date
ES357943A Expired ES357943A1 (en) 1967-10-31 1968-09-07 Wall panel that can be written on with chalk
ES1968141408U Expired ES141408Y (en) 1967-10-31 1968-09-07 ANTI-GLARE WALL SLATE.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES1968141408U Expired ES141408Y (en) 1967-10-31 1968-09-07 ANTI-GLARE WALL SLATE.

Country Status (8)

Country Link
AT (1) AT283951B (en)
BE (1) BE723110A (en)
DE (1) DE1978995U (en)
ES (2) ES357943A1 (en)
FR (1) FR1585302A (en)
GB (1) GB1237269A (en)
NL (1) NL6813338A (en)
SE (1) SE341596B (en)

Also Published As

Publication number Publication date
NL6813338A (en) 1969-05-02
AT283951B (en) 1970-08-25
DE1978995U (en) 1968-02-15
GB1237269A (en) 1971-06-30
FR1585302A (en) 1970-01-16
ES141408U (en) 1969-01-16
BE723110A (en) 1969-04-01
ES141408Y (en) 1970-10-01
SE341596B (en) 1972-01-10

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