Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1995-07-17
1998-02-17
Nold, Charles
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
428283, 524 10, 524 11, 524 12, 524 13, 524 17, 524 18, 524 19, 524 20, 524 21, 106124, 106406, 106407, 106493, D06M 1000, C08J 518, B24D 1500
Patent
active
057189544
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a method for producing a substance including a natural organic substance fine powder, such as a silk fine powder, which can be used in plastics film or sheet, coating medium, fiber treatment agents and the like.
2. Description of the Related Art
Prior art thermoplastic films, for instance, an olefin type such as polyethylene and polypropylene, are inferior in the moisture absorbing/releasing property and also the anti-condensation property. Further, they are sometimes sticky. Therefore, they have been inferior in their overall character.
A thermoplastics film which additionally contains a waxing compound is apt to be poor in drape and does not show good results in moisture permeation property, moistureabsorption-and-discharge property and condensation inhibition property.
According to the inventions disclosed in Japanese Patent Laid-Open Publication No. 3-195800 and also Japanese Patent Laid-Open Publication No. 1-293142, there are attempts to overcome the above drawbacks by incorporating skin particles or silk particles in thermoplastic films. The particles of these natural organic materials, however, have a great water content, and therefore their dispersion is poor. In addition, the natural organic material powder and the plastics are subject to hydrolysis due to their water content, thus posing problems in the stability during film formation (such as generation of gum or bubbles) to disable continuous production. Further, the overall character, moisture absorbing/releasing property, moisture permeability and anti-condensation property are unsatisfactory, and satisfactory effects of incorporating the above power additives are not attained.
A first object of the invention, accordingly, is to provide a thermoplastic film and laminate with excellent overall character, moisture absorbing/releasing property, moisture permeability, anti-condensation property, anti-blocking property, etc.
A second object of the invention is to provide a method of manufacturing the thermoplastic film as noted above.
When writing or printing a letter, numeral or graphic directly on plastic article, glassware, metal parts or the like, the respective surfaces to be written or printed are too smooth to put letters thereon having clarity and abrasion resistance by using generally used ink.
Accordingly, when signing on a credit card or writing on a video cassette tape a recording date and contents thereof by using a water aqueous ink pen or ball point pen, it has been required to use paper labels capable of being stuck on them after writing information thereon.
Otherwise, a white coating is preliminary put on a portion of the card and cassette tape to make a surface to be written on. These coating materials are generally combined with silica for delustering.
However, in a conventional process utilizing the labels, it was always necessary to prepare labels with an adhesive agent and prepare a new one for every card or cassette tape, which is time-consuming and costly.
When using a coating material containing silica for writing, there will be disadvantages such that the written letters are easily defaced and unreadable (poor adhesion or low abrasion resistance), the surface of the coating film is hard and slippery, the touch feeling is bad and the like.
Especially when writing with a water ink, the ink is not absorbed into the material so that the ink is shed. As the ink after writing does not readily dry, the ink may run on the paper after being touched by fingers to break the written letters, and even after drying, the written letters still tend to wipe off. Furthermore, the touch feeling is not so comfortable and the write feeling is not fine.
Accordingly, it is the third object of the present invention to provide a coating material which forms an information display surface and products having a surface to be written on formed by this coating material, which provides a good adhesion and feel.
There have been proposed various kinds of methods for produc
REFERENCES:
patent: 3634184 (1972-01-01), Wang
patent: 4223211 (1980-09-01), Ohtomo et al.
patent: 4325741 (1982-04-01), Otoi et al.
patent: 4456639 (1984-06-01), Drower et al.
patent: 4834762 (1989-05-01), Nishibori
English Translation of Japanese Patent Appln. No. Sho 39-1941 entitled "Method of Producing Powder Silk Fibroin for Utilizing For Chromatograph" (1 page).
English Translation of Japanese Patent Appln. No. Sho 61-36840 entitled "Method of Producing Powder Silk Fibroin" (1 page).
English Translation of Japanese Patent Appln. No. Sho 63-51160 entitled "Method of Producing Powder Silk Fibroin" (1 page).
English Translation of Japanese Patent Appln. No. Hei 1-293142 entitled "Method of Grinding for Silk, Resin Film, Resin Membrane and Coating" (1 page).
English Translation of Japanese Patent Appln. No. Hei 3-195800 entitled "For Products of Molding in Leather Type" (1 page).
English Translation of Japanese Patent Appln. No. Hei 4-300369 entitled "Silk Fine Powder and Method of Producing Silk Fine Powder Used to Reform Feeling and Function of Artificial Leather" (1 page).
"Leather and fur processing", Fibrous protein, and Collagen. McGraw-Hill Encyclopedia of Science & Technology, 681-682, 101, 143-145, 1992.
Fukatsu Fumioki
Kusamoto Nobuo
Mikami Satoshi
Ohyama Shigeru
Sano Masahiro
Idemitsu Petrochemical Co. Ltd.
Nold Charles
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