Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Reexamination Certificate
2001-06-01
2003-06-17
Chen, Vivian (Department: 1773)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
C428S156000, C428S323000, C428S328000, C428S332000, C428S339000, C428S458000, C428S480000, C428S481000, C428S537100, C428S702000
Reexamination Certificate
active
06579611
ABSTRACT:
INDUSTRIAL FIELD
The present invention relates to a resin film for a decorative plate made from a polyester film with crystallization accelerating agent, wherein the film is embossed so as to form a ruggedness pattern at an outer surface of the resin film. The invention also relates to a decorative plate laminated with the resin film.
BACKGROUND OF THE INVENTION
In the prior art, a film made from soft plastic polyvinylchloride resin which is excellent in view of a forming, a design and a chemical resistance, polyolefin resin such as polyethylene and polypropylene, thermoplastic acrylate resin and fluororesins including fluorine, a metal plate covered with biaxial stretching polyester film and so on, a laminated wooden sheet and a MDF are used for an outer plate and an inner part of construction materials, furniture, electric and electronic appliances, sound equipment and business machines.
The polyvinylchloride resin is excellent in characteristics such as economy, embossing and molding. On the other hand, a large amount of plasticizer is added so as to form and mold the resin easily. Therefore, the resin film is too soft and apt to bleed the plasticizer to a surface of the resin film by a long term. In addition, when the resin is burning, toxic substance produced by hydrogen chloride gas is baneful influence to the environment. It becomes a serious problem.
Instead of the polyvinylchloride resin, polyolefin resin mainly including polyethylene resin and polypropylene resin have been considered. Although a single layered film made from these resins has excellent characteristics in view of embossing and chemical resistance, the film is softer than a plastic polyvinylchloride resin. When the resin is laminated on a metal plate and formed, a design is damaged by whitening the formed portions. Although any rubber constituent might be mixed so as to avoid for whitening the portions, the resin becomes as soft as the plastic polyvinylchloride resin.
The thermoplastic acrylate resin and the fluororesins have some useful characteristics, respectively. However, these resins are as soft as the polyvinylchloride resin. Recently, biaxial stretching polyester film mainly including polyethylene terephthalate as a laminate material is paid attention. However, when the resin is embossed, a deep, clear ruggedness pattern can not be formed easily and the design is not so good. Moreover, if some kinds of color pigments are mixed into the resin so as to emphasize the ornament effect, the other characteristics such as forming and water-proof aging would be deteriorated.
To solve the above drawbacks, the present invention provides a resin film laminated on a decorative plate having useful characteristics in view of the embossing, forming, water-proof aging and design, which are more excellent or equal to those of the conventional decorative plate including polyvinylchloride resin.
DISCLOSURE OF THE INVENTION
The present invention provides a resin film laminated on a decorative plate comprising a polyester resin film, wherein crystallization accelerating agent has 0.01 to 5 &mgr;m in grain diameter and is included 0.5 to 60 wt % in weight content and at least one surface of the polyester resin film is embossed. The crystallization accelerating agent is pigment. The pigment is one or more kinds selected from a group of carbon-base pigments, titanium-base pigments, azo compound pigments, cyanine-base pigments. The polyester resin film is a polyethylene terephthalate resin film. The resin film is laminated on a metal sheet, a wooden sheet or a board.
BEST MODE FOR CARRYING OUT THE INVENTION
The inventors of the present application have been researched a crystallization and the characteristics of resin films. Then, the inventors found that a crystallization speed of the resin influenced to forming and embossing of the resin.
By improving a crystallization speed, the crystallization of the resin can be promoted and the crystallization growth can be controlled so that the forming can be improved by increasing number of minute crystals without ruining the transparency.
In case of using a decorative plate in water, it is found that a deterioration of the resin could be prevented from promoting. In case of adding minute resin powder having particle sizes in a predetermined range, it was found that the crystallization of the resin was promoted. Thus, the inventors recognized that the minute powder was affected as crystallization accelerating agent.
The present invention is explained hereinafter.
(Used Substrate)
A metal plate such as a steel plate, an aluminum plate, an aluminum alloy plate, a copper plate, a cooper alloy plate, a zinc-or zinc-alloy plating steel plate is used as a substrate of a decorative plate according to the present invention.
Further, a single wooden plate, a laminated wooden plate such as wood veneers and a wood plywood and MDF are also used. Moreover, a plate made from inorganic materials such as a plasterboard, a silicic acid calcium board and an asbestos cement straight board is also used.
The metal plate is an ordinary steel cold rolled steel sheet of 0.10 to 1.2 mm in thickness preferably. An ordinary steel cold rolled steel of 0.10 to 0.50 mm in thickness is more preferable. Among the cold rolled steel, low carbon or extra low carbon aluminum killed steel sheet is preferably used. A non-aging steel sheet in which Nb, Ti or the others are added, a chromium content steel sheet in which chromium of 3 to 18 wt % is included and a stainless steel sheet having various compositions may be used. A surface treated steel sheet which gives surface treatment to the surface of the cold rolled steel sheet may be used. Plating and a conversion treatment and painting processing can be considered as the surface treatment. As plating, zinc-plating, zinc-aluminum alloy plating, zinc-cobalt-molybdenum plating, tin plating, nickel plating, chromium plating, nickel-phosphorous plating, nickel-zinc plating, nickel-cobalt plating, nickel-tin plating and aluminum plating can be considered. As a conversion treatment, chromate treatment and phosphate treatment and the other well-known methods can be considered. As coating process, various paints may be coated or baked responding to the characteristics.
(Used Resin Film)
A film comprising crystal resin is necessary as a resin film for a decorative laminated resin film according to the present invention. Especially, polyethylene terephthalate, polybutylene terephthalate, and a copolymer of polyethylene terephthalate and polybutylene terephthalate and other polyester resins may be used. For instance, one of terephthalic acids is used and the copolymerization body replaced with isophthalic acid and adipic acid, etc may be used. Further, one of butanediol is used and the copolymerization body replaced with ethylene glycol etc. may be used. Moreover, two kinds or more of the above mentioned blend resins are used. In addition, two kinds or more of laminated filmsmade from the above mentioned resins may be used as a compound resin film. It is desirable that a thickness 20 to 300 &mgr;m preferable, and especially 70 to 200 &mgr;m.
(Crystallization Accelerating Agent Included in a Resin Film)
A resin film laminate on a decorative plate in the present invention is a film made from a crystalline resin including crystallization accelerating agent. As minute powder for promoting resin crystallization, pigments ordinary used for paints can be used. For instance, one or two more kinds of pigments selects from a group comprising carbon-base pigments such as carbon blacks, titanium-base pigments such as titanium white and titanium yellow, inorganic pigments such as red iron oxide, lead white, ultra marine blue pigment, cadmium yellow, azo compound pigments such as parared, cyanine-based pigments such as phthalocyanine blue and anthraquinone may be used.
The crystallization accelerating agent such as the above described pigments is utilized as minute powder of which diameter is 0.01 to 5 &mgr;m. The diameter is more preferably 0.01 to 0.5 &mgr;m. The minute powder is containe
Iwashita Hiroyuki
Sugimoto Yoshiyuki
Taguma Koji
Browdy and Neimark PLLC
Chen Vivian
Toyo Kohan Co. Ltd.
LandOfFree
Resin film for producing decorative laminate and decorative... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Resin film for producing decorative laminate and decorative..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resin film for producing decorative laminate and decorative... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3147295