Patents by Inventor Isao Yoshimura
Isao Yoshimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5443765Abstract: A method for producing a high strength multi-layered film excellent in heat resistance, shrinkability and stretchability and usable for wrapping of various articles which comprises at least five layers comprising a surface layer (S layer) mainly composed of at least one polymer selected from (A), (B), etc. and as inner layers at least one base layer (SBC layer) containing mainly a mixed composition comprising a combination such as (A)+(B)+(C), at least one core layer (H layer) containing mainly a polymer selected from (C), and at least one auxiliary layer (R layer) containing mainly at least one polymer selected from (A) and (B), with a proviso that when the R layer is placed-adjacent to the S layer, the R layer comprises the resin different from that of the S layer, said (A) being a low-density polyethylene or a copolymer of ethylene with a specific monomer, said (B) being a soft thermoplastic elastomer having a Vicat softening point of 80.degree. C.Type: GrantFiled: January 19, 1994Date of Patent: August 22, 1995Assignee: Asahi Kasei Koygo Kabushiki KaishaInventors: Isao Yoshimura, Shin Kahata
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Patent number: 5300353Abstract: A high-strength multi-layered film excellent in heat resistance, shrinkability and stretchability and usable for wrapping of various articles which comprises at least five layers comprising a surface layer (S layer) mainly composed of at least one polymer selected from (A), (B), etc. and as inner layers at least one base layer (SBC layer) containing mainly a mixed composition comprising a combination such as (A)+(B)+(C) or the like, at least one core layer (H layer) containing mainly a polymer selected from (C), and at least one auxiliary layer (R layer) containing mainly at least one polymer selected from (A) and (B), with a proviso that when the R layer is placed adjacent to the S layer, the R layer comprises the resin different from that of the S layer, said (A) being a low-density polyethylene or a copolymer of ethylene with a specific monomer, said (B) being a soft thermoplastic elastomer having a Vicat softening point of 80.degree. C.Type: GrantFiled: July 13, 1992Date of Patent: April 5, 1994Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Isao Yoshimura, Shin Kahata
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Patent number: 5089341Abstract: The present invention relates to the high-sensitivity thermosensitive multilayer film and the method to produce plate-making paper using the film. In the present invention, the high-sensitivity thermosensitive multilayer film consists of at least one functional layer and at least one peeling layer. The said functional layer is made of the thermoplastic resin layer with the thickness of 0.1 to 12 .mu.m and with at least 30% of a thermal shrinkage rate and at least 50 g/mm.sup.2 of thermal shrinkage stress value. The peeling layer consists of the thermoplastic resin layer which is different from that of the functional layer and is the special multilayer film which is readily releasable and capable of exerting a compressive force to the functional layer. When the stencil sheet is manufactured by using the said multilayer film, the operation efficiency at time of lamination and the shrinkage capacity can improve by peeling the said peeling layer after lamination from porous supporting member.Type: GrantFiled: July 17, 1989Date of Patent: February 18, 1992Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Isao Yoshimura, Toshiaki Ohno, Hideo Hata
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Patent number: 4835218Abstract: A composition for shrinkable film which excells in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene- .alpha.-olefin copolymer and an elastomer consisting of block copolymer having at least one monovinyl substituted aromatic hydrocarbon polymer block and at least one polyolefin polymer block selected from at least one saturated polymer or unsaturated polymer made from mainly aliphatic conjugate diene derivative, and (C) is rigid polyolefin resins such as polypropylene.Type: GrantFiled: October 19, 1987Date of Patent: May 30, 1989Assignee: Asahi Kasei Kogyo Kabushiki KaishiInventors: Isao Yoshimura, Hideo Hata, Takashi Kaneko
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Patent number: 4766033Abstract: The present invention relates to a highly sensitive heat-sensitive film for stencil. This invention provides a highly heat-sensitive film for stencil, comprising a thermoplastic resin having a coefficient of temperature and melt viscosity (.DELTA.T/.DELTA. log VI) of not more than 100 and a thermal shrinkage (X%) at 100.degree. C. and a thermal shrinkage stress (Y g/mm.sup.2) at 100.degree. C. falling respectively in the ranges of the formulas; 15.ltoreq.X.ltoreq.80 and 75.ltoreq.Y.ltoreq.500; and both falling in the range of the formula; -8X+400.ltoreq.Y.ltoreq.-10X+1000; having a thickness in the range of 0.5 to 15 .mu.m, and excelling in low-energy perforation property.Type: GrantFiled: July 14, 1986Date of Patent: August 23, 1988Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Isao Yoshimura, Takashi Nakao, Mitsuo Kohno
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Patent number: 4701496Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer, and (C) is rigid polyolefin resins such as polypropylene.Type: GrantFiled: February 3, 1986Date of Patent: October 20, 1987Assignee: Asahi-Dow Ltd.Inventors: Isao Yoshimura, Hideo Hata, Takashi Kaneko
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Patent number: 4619859Abstract: The present invention provides primarily an entirely new type multilayer oriented film suited for stretch wrapping, particularly for wrapping of foods. Its features include various excellent characteristics such as mechanical strength, transparency, heat resistance, sealability, stretchability, low temperature resistance, etc. In particular, the present invention concerns a process for producing such a multilayer film by cold stretching a multilayer containing at least one layer with a specific composition capable of a high degree of cold stretching, which enables simultaneously cold stretching of other layers made of resins which can be or cannot be stretched solely, through its cold stretching force, thereby imparting high strength to all the layers, and further applying a specific heat treatment on the stretched film to modify orientation of the film so as to increase stretchability and to stabilize dimension of the film.Type: GrantFiled: September 25, 1984Date of Patent: October 28, 1986Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Isao Yoshimura, Hideo Hata
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Patent number: 4542886Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefine copolymer, and (C) is rigid polyolefin resins such as polypropylene.Type: GrantFiled: December 5, 1980Date of Patent: September 24, 1985Assignee: Y. Toyoda International Patent OfficeInventors: Isao Yoshimura, Hideo Hata, Takashi Kaneko
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Patent number: 4537935Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer, and (C) is rigid polyolefin resins such as polypropylene.Type: GrantFiled: October 29, 1984Date of Patent: August 27, 1985Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Hideo Hata, Takashi Kaneko
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Patent number: 4501634Abstract: A high-orientation multilayered film incorporates at least one cold drawn, highly oriented resin layer excellent in mechanical strength and suitable mainly for use as packaging material. Because of its specific stratal construction which is highly adaptable to afford a wide variety of specific functions, the composite film is suitable for manufacture of thermally shrinkable films which excel in transparency and in ability to shrink rapidly particularly at low temperatures. Also disclosed is a process for drawing at specific low temperatures at high expansion ratios the aforementioned multiplicity of resin layers either all by themselves or in conjunction with layers of other resins by utilizing the cold drawability of the aforementioned resin layers excelling in mechanical strength.Type: GrantFiled: November 1, 1983Date of Patent: February 26, 1985Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Osamu Mizukami, Hideo Hata, Junichi Kageyama, Takashi Kaneko
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Patent number: 4499241Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefin resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer, and (C) is rigid polyolefin resins such as polypropylene.Type: GrantFiled: December 5, 1980Date of Patent: February 12, 1985Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Hideo Hata, Takashi Kaneko
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Patent number: 4481334Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particulaly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer, and (C) is rigid polyolefin resins such as polypropylene.Type: GrantFiled: January 12, 1983Date of Patent: November 6, 1984Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Hideo Hata, Takashi Kaneko
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Patent number: 4472228Abstract: A high-orientation multilayered film incorporates at least one cold drawn, highly oriented resin layer excellent in mechanical strength and suitable mainly for use as packaging material. Because of its specific stratal construction which is highly adaptable to afford a wide variety of specific functions, the composite film is suitable for manufacture of thermally shrinkable films which excel in transparency and in ability to shrink rapidly particularly at low temperatures. Also disclosed is a process for drawing at specific low temperatures at high expansion ratios the aforementioned multiplicity of resin layers either all by themselves or in conjunction with layers of other resins by utilizing the cold drawability of the aforementioned resin layers excelling in mechanical strength.Type: GrantFiled: December 8, 1983Date of Patent: September 18, 1984Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Osamu Mizukami, Hideo Hata, Junichi Kageyama, Takashi Kaneko
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Patent number: 4469753Abstract: A high-orientation multilayered film incorporates at least one cold drawn, highly oriented resin layer excellent in mechanical strength and suitable mainly for use as packaging material. Because of its specific stratal construction which is highly adaptable to afford a wide variety of specific functions, the composite film is suitable for manufacture of thermally shrinkable films which excel in transparency and in ability to shrink rapidly particularly at low temperatures. Also disclosed is a process for drawing at specific low temperatures at high expansion ratios the aforementioned multiplicity of resin layers either all by themselves or in conjunction with layers of other resins by utilizing the cold drawability of the aforementioned resin layers excelling in mechanical strength.Type: GrantFiled: December 8, 1983Date of Patent: September 4, 1984Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Osamu Mizukami, Hideo Hata, Junichi Kageyama, Takashi Kaneko
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Patent number: 4469752Abstract: A high-orientation multilayered film incorporates at least one cold drawn, highly oriented resin layer excellent in mechanical strength and suitable mainly for use as packaging material. Because of its specific stratal construction which is highly adaptable to afford a wide variety of specific functions, the composite film is suitable for manufacture of thermally shrinkable films which excel in transparency and in ability to shrink rapidly particularly at low temperatures. Also disclosed is a process for drawing at specific low temperatures at high expansion ratios the aforementioned multiplicity of resin layers either all by themselves or in conjunction with layers of other resins by utilizing the cold drawability of the aforementioned resin layers excelling in mechanical strength.Type: GrantFiled: December 8, 1983Date of Patent: September 4, 1984Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Osamu Mizukami, Hideo Hata, Junichi Kageyama, Takashi Kaneko
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Patent number: 4454303Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B), and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer, and (C) is rigid polyolefin resins such as polypropylene.Type: GrantFiled: January 12, 1983Date of Patent: June 12, 1984Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Hideo Hata, Takashi Kaneko
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Patent number: 4430378Abstract: A high-orientation multilayered film incorporates at least one cold drawn, highly oriented resin layer excellent in mechanical strength and suitable mainly for use as packaging material. Because of its specific stratal construction which is highly adaptable to afford a wide variety of specific functions, the composite film is suitable for manufacture of thermally shrinkable films which excel in transparency and in ability to shrink rapidly particularly at low temperatures. Also disclosed is a process for drawing at specific low temperatures at high expansion ratios the aforementioned multiplicity of resin layers either all by themselves or in conjunction with layers of other resins by utilizing the cold drawability of the aforementioned resin layers excelling in mechanical strength.Type: GrantFiled: January 21, 1983Date of Patent: February 7, 1984Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Osamu Mizukami, Hideo Hata, Junichi Kageyama, Takashi Kaneko
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Patent number: 4430377Abstract: A high-orientation multilayered film incorporates at least one cold drawn, highly oriented resin layer excellent in mechanical strength and suitable mainly for use as packaging material. Because of its specific stratal construction which is highly adaptable to afford a wide variety of specific functions, the composite film is suitable for manufacture of thermally shrinkable films which excel in transparency and in ability to shrink rapidly particularly at low temperatures. Also disclosed is a process for drawing at specific low temperatures at high expansion ratios the aforementioned multiplicity of resin layers either all by themselves or in conjunction with layers of other resins by utilizing the cold drawability of the aforementioned resin layers excelling in mechanical strength.Type: GrantFiled: January 21, 1983Date of Patent: February 7, 1984Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Osamu Mizukami, Hideo Hata, Junichi Kageyama, Takashi Kaneko
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Patent number: 4399181Abstract: A high-orientation multilayered film incorporates at least one cold drawn, highly oriented resin layer excellent in mechanical strength and suitable mainly for use as packaging material. Because of its specific stratal construction which is highly adaptable to afford a wide variety of specific functions, the composite film is suitable for manufacture of thermally shrinkable films which excel in transparency and in ability to shrink rapidly particularly at low temperatures. Also disclosed is a process for drawing at specific low temperatures at high expansion ratios the aforementioned multiplicity of resin layers either all by themselves or in conjunction with layers of other resins by utilizing the cold drawability of the aforementioned resin layers excelling in mechanical strength.Type: GrantFiled: November 30, 1981Date of Patent: August 16, 1983Assignee: Asahi-Dow LimitedInventors: Isao Yoshimura, Osamu Mizukami, Hideo Hata, Junichi Kageyama, Takashi Kaneko
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Patent number: RE33832Abstract: A composition for shrinkable film which excells in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer and an elastomer consisting of block copolymer having at least one monovinyl substituted aromatic, hydrocarbon polymer block and at least one polyolefin polymer block selected from at least one saturated polymer or unsaturated polymer made from mainly aliphatic conjugate diene derivative, and (C) is rigid polyolefin resins such as polypropylene.Type: GrantFiled: July 25, 1990Date of Patent: February 25, 1992Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Isao Yoshimura, Hideo Hata, Takashi Kaneko