EP0354699A2
Expired / Lapsed
EP
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Film material
Assignee: THREE S TECHNOLOGIES BV
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Filing: 1989-07-31
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Granted: —
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Expires: 2009-07-31
Abstract
Abstract A film material (1) suitable for use as, for example, a printing material or packaging material, composed of colourless or coloured transparent thermoplastic polymer film having one surface (2) molded into an uneven shape so that light incident from a flat surface (5) on the opposite side of the film exhibits a total reflection or an approximate thereto.
Inventors
- 👤 Masahiro Shigemitsu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 22:42
CPC Classifications
C; C08; C08J; C08J5/00; B; B65; B65D; B65D55/00; B65D55/02; B65D55/06; B65D55/066; B32; B32B; B32B3/00; B65D65/00; B65D65/38
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
43 words
A film material (1) comprising a colourless or coloured transparent thermoplastic polymer film having one surface (2) molded into an uneven shape so that light incident from a flat surface (5) on the opposite side of the film is totally or approximately reflected.
Claim 2
Dependent Claim
43 words
A film material (1) comprising a colourless or coloured transparent thermoplastic polymer film having one surface (2) molded into an uneven shape so that light incident from a flat surface (5) on the opposite side of the film is totally or approximately reflected.
Claim 3
Dependent Claim
24 words
A printing material composed of a film material according to claim 1, wherein printing is effected on the non-molded surface (5) of the film.
Claim 4
Dependent Claim
24 words
A material according to claim 1 or claim 2, which is stretched in a specific direction to provide the characteristics of a heat-shrinkable film.
Claim 5
Dependent Claim
47 words
A material according to any of the preceding claims, wherein the non-molded surface of the film is provided with pinholes of any desired size and number such that deformation of a vessel covered with the material due to a pressure change within the vessel cannot be observed.
Claim 6
Dependent Claim
34 words
In combination: a colourless or coloured paper or polymer film (6) superposed on the molded surface (2) of a film according to any of the preceding claims with a thin fluid layer sandwiched therebetween.
Claim 7
Dependent Claim
47 words
A combination according to claim 5 defining packaging material and comprising two sheets of films according to any of claims 1 to 4 superposed one on the other so that the uneven shape grooves on the two respective films are at a required angle from each other.
Claim 8
Dependent Claim
36 words
A combination according to claim 6, wherein the films are superposed in such a way that the molded surface of one film (1) is in contact with the non-molded flat surface of the other film (6).
Claim 9
Dependent Claim
15 words
A combination according to any of claim 5 to 7, wherein the fluid is air.
Claim 10
Dependent Claim
38 words
A combination according to at least claim 6, wherein when a liquid penetrates between the two films (1,6) or the film on the incident light side is peeled off, the total reflection phenomenon disappears and the transparency increases.
Claim 11
Dependent Claim
57 words
A combination according to at least claim 6, wherein the two films (1,6) comprise an iron salt and tannic acid or a derivative thereof coated on the uneven shape surface, and when water or an aqueous solution penetrates between the films, the colour of the material becomes black simultaneously with the disappearance of the total reflection phenomenon.
Claim 12
Dependent Claim
57 words
A combination according to at least claim 6, wherein any desired liquid is filled as a thin layer between the two films (1,6) and a peripheral portion thereof is sealed by heating under a reduced pressue to form a transparent state, and the transparent state exhibits a total reflection phenomenon when released from the reduced pressure state.
Claim 13
Dependent Claim
91 words
A combination according to at least claim 6, wherein each film is molded into an uneven shape in a single direction or a plurality of directions on one surface so that light incident from the flat surface on the opposite side of the film is totally reflected, the films being sealed by heating at peripheral portions thereof under a reduced pressure and in a state by which a moire stripe is exhibited, the material exhibiting a total reflection phenomenon and the moire stripe disappearing when released form the reduced pressure state.
References Cited (Backward Citations)
No citation records indexed.
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