US1712178A - Treatment of transparent material - Google Patents
Treatment of transparent material Download PDFInfo
- Publication number
- US1712178A US1712178A US732120A US73212024A US1712178A US 1712178 A US1712178 A US 1712178A US 732120 A US732120 A US 732120A US 73212024 A US73212024 A US 73212024A US 1712178 A US1712178 A US 1712178A
- Authority
- US
- United States
- Prior art keywords
- treatment
- transparent
- transparency
- treating
- glare
- 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 - Lifetime
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/26—Agents rendering paper transparent or translucent
Definitions
- my invention consists in treating the surface of the panel material.
- one surface of the material is treated with a suitable solution which'is adapted upon evaporation to leave the surface in a matt or non-glare condition.
- a suitable solution which'is adapted upon evaporation to leave the surface in a matt or non-glare condition.
- a concentrated aqueous solution of calcium chloride there are quite a number of solutions which will accomplish this result, among 1 which may be mentioned a concentrated aqueous solution of calcium chloride.
- the other surface of the material is then treated with a suitable substance which will result in the formation of a film having the property of increasing the transparency of the material.
- Y Quite'a number of substances may be used for this purpose; for example, tannic acid dissolved in alcohol may be applied to form the film, and if desired, a material of a higher refractive index, such as terpin hydrate may TREATMENT OF TRANSPARENT MATERIAL.
- a material of a higher refractive index such as terpin hydrate may TREATMENT OF TRANSPARENT MATERIAL.
Landscapes
- Surface Treatment Of Glass (AREA)
- Laminated Bodies (AREA)
Description
Patented May 7, 1929.
UNITED STATES 1,712,178 PATENT OFFICE.
CHARLES E. SWETT, OF' WEST ROXIBURY, MASSACHUSETTS, ASSIGNOR T0 UNITED STATES ENVELOPE GOMPANY OF SPRINGFIELD, MASSACHUSETTS, A CORPORA- TION OF :MAINE.
No Drawing;
A which is secured a covering of glassine paper,
or other transparent or semi-transparent material.
It is known that the'degree of transparency of panel material, such as glassine paper, may be considerably increased by the treatment of a surface of the, material with a liquid having resinous, or other transparent matter in solutiomwhich liquid upon drying forms a transparent film. But as the transparent film resulting from this treatment is usually on the outside surface of the patch or panel When it is applied to the envelope, it has been found that the glare or reflection of light from thesurface of the transparent patch or panel, gives rise to objections on the part of those required to handle large numbers of such envelopes, as for instance, in the sorting of mail.
According to my present 1nvent1on, 1t is proposed to treat transparent panel material,
such as glassine paper, in such a manner as to both: increase its transparency and to reduce the glare, with a net gain in both directions. Broadly stated, my invention consists in treating the surface of the panel material.
which is to be outermost so as to leave it in a matt,or non-glare condition, and in treating the surfacc'of the material which is to be 1nnermost with a transparent film formingmaterial of high refractive index.
' In carrying out my invention, one surface of the material is treated with a suitable solution which'is adapted upon evaporation to leave the surface in a matt or non-glare condition. There are quite a number of solutions which will accomplish this result, among 1 which may be mentioned a concentrated aqueous solution of calcium chloride. The other surface of the material is then treated with a suitable substance which will result in the formation of a film having the property of increasing the transparency of the material.
Y Quite'a number of substances may be used for this purpose; for example, tannic acid dissolved in alcohol may be applied to form the film, and if desired, a material of a higher refractive index, such as terpin hydrate may TREATMENT OF TRANSPARENT MATERIAL.
I Application filed August 14, 1924. Serial No. 732,120.
be added to the solution to further increase the transparent qualities of the film.
The result of the above described treatment of opposite surfaces of the material is a decrease of the transparency of the original material due to the glare reduction on one surface and an increase of the transparency of the original material, due to. the formation of a transparent film on the other surface thereof. In the practice of my invention, the
treatment for glare reduction is carried out to such an extent as to diminish .the transparency of the original material by about 25%, while the treatment to increase the transparency'is carried out to such an extent as to increase the transparency of the original material about.50%, although it is obvious that other degrees of treatment may be employed. Considering the above figures as a concrete example, it follows that the carrylng out of my invention results in a net gain in transparency of about 25% and a reduction of glare as measured by standard instruments of about 50%.
. "From the foregoing it is apparent that by treating a transparent material such as glassine paper, in accordance with my invention, there is produced a material which can be used mosteffectively for the patches or panels of window envelopes, by reason of the fact that the surface which is outermost is substantially glareless, Whereas the treated material itself has a transparency greater than that of the original untreated material. In carrying out my invention I am in noway limited to the use of any specific substances for treating the surfaces of the material, my invention of transparency resulting from the second named treatment more than overcoming the loss of transparency resulting from the first named treatment, whereby there is a net gain in the transparent properties of the treated paper.
3. The improvement in the treatment of 5 flexible transparent material used for the patches or panels of windowenvelopes which consists in treating one surface of said material to reduce glare, and treating the other surface of said material to increase its trans- 10 pare'ncy.
' 4. The improvement in the treatment of flexible transparent material used for patches or panels of window envelopes which eon sists in treating one surface of said material to bring it to a matt or non-glare condition, and treating the other surface of said material to form a film of higher refractive index than the untreated material.
CHARLES E. SWETT.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US732120A US1712178A (en) | 1924-08-14 | 1924-08-14 | Treatment of transparent material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US732120A US1712178A (en) | 1924-08-14 | 1924-08-14 | Treatment of transparent material |
Publications (1)
Publication Number | Publication Date |
---|---|
US1712178A true US1712178A (en) | 1929-05-07 |
Family
ID=24942279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US732120A Expired - Lifetime US1712178A (en) | 1924-08-14 | 1924-08-14 | Treatment of transparent material |
Country Status (1)
Country | Link |
---|---|
US (1) | US1712178A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2401866A1 (en) * | 1974-01-16 | 1975-07-31 | Reflex Papier Fabrik Felix Hei | FLAT-SHAPED DRAWING CARRIER MATERIAL |
-
1924
- 1924-08-14 US US732120A patent/US1712178A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2401866A1 (en) * | 1974-01-16 | 1975-07-31 | Reflex Papier Fabrik Felix Hei | FLAT-SHAPED DRAWING CARRIER MATERIAL |
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