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11. 发明专利

JPH03176122A MANUFACTURE OF CORRUGATED FILM 失效
公开(公告)号：JPH03176122A
公开(公告)日：1991-07-31
申请号：JP31711989
申请日：1989-12-06
申请人： MITSUBISHI CHEM IND
发明人： FUJII TOSHIO , SAKAI AKIHIKO
IPC分类号： B29C53/24
摘要： PURPOSE:To enable formation of a favorable wave form on a raw fabric sheet or a film, by a method wherein at the time of roll stretching treatment of the raw fabric sheet or the film, the film is pressed against a stretching roll with nip rolls in a specific form. CONSTITUTION:A raw fabric film 1 is temperature-controlled to a temperature suitable for stretching with preheating rolls 2, 2', 2'' and stretched with differ ence between a number of revolutions of a feeding-in roll 3 and those of a take-off roll 4. A draw ratio is made at least 1.5 times, preferably at least 2 times. Shaping of a wave form is performed by a method wherein the surface of nip rolls 5 or 6 is formed into uneven state and the same is pressed against the film on a feeding-in roll 3 or the take-off roll 4. A difference between the maximum value and minimum value of the diameter of the rolls is made prefer ably at least 500 mum in relation to a change ratio of a widthwise direction of the surface of the nip rolls 5 or 6 and a matter comprised of an elastic material such as neoprene rubber or EPD rubber or silicone rubber is preferable as the quality of the material or the nip rolls 5 or 6.

12. 发明专利

JPH03136831A PREPARATION OF PACKING BAG 失效
公开(公告)号：JPH03136831A
公开(公告)日：1991-06-11
申请号：JP21197789
申请日：1989-08-17
申请人： MITSUBISHI CHEM IND
发明人： FUJII TOSHIO , HOSODA IZUMI , YAMAGATA NOBUYUKI
IPC分类号： C08J5/18 , B29C55/28 , B29D22/00 , B29K23/00 , B29L7/00 , B29L22/00 , C08L23/00 , C08L23/04
摘要： PURPOSE:To obtain a packing bag having good heat-sealing strength and body part strength by subjecting modified linear low density polyethylene specified in its physical properties to inflation molding and heat sealing under a specific condition. CONSTITUTION:0.0001 - 0.1pts.wt. of a radical generating agent is compounded with 100pts.wt. of a linear low density polyethylene or polyethylene mixture consisting of 100 - 60pts.wt. of linear low density polyethylene wherein a melt index is 2.0g/10 min or less, density is 0.910 - 0.945g/cm and a flow ratio is 35 or less prepared by the copolymerization of ethylene and 6C alpha-olefin due to a gaseous phase polymerization process and 0 - 40pts.wt. of branched low density polyethylene wherein a melt index is 1.9g/10 min or less, density is 0.915 - 0.930g/cm and a flow ratio is 50 or less to modify said mixture and the modified mixture is subjected to inflation molding under such a condition that a blow-up ratio is 0.9 - 2.0 and a draft ratio is 5 - 40 or said mixture is subjected to inflation molding under the same condition while modified by the above mentioned method. The cylindrical film thus obtained is heat-sealed and cut along the direction crossing a taking-up direction.

13. 发明专利

JPH0353930A MANUFACTURE OF PACKING BAG 失效
公开(公告)号：JPH0353930A
公开(公告)日：1991-03-07
申请号：JP19021189
申请日：1989-07-21
申请人： MITSUBISHI CHEM IND
发明人： FUJII TOSHIO , HOSODA IZUMI , YAMAGATA NOBUYUKI
IPC分类号： B31B50/64 , B29C55/28 , B29K23/00 , B29L7/00 , C08L23/00 , C08L23/04
摘要： PURPOSE:To improve heat-sealing strength and belly part strength, by performing inflation molding and heat sealing of a matter obtained by compounding specific high-density polyethylene and an ethylene-olefin copolymer to specific linear low-density polyethylene in a specific quantity under a specific condition. CONSTITUTION:A composition constituted of 70-99 pts.wt. linear low-density polyethylene which is obtained by copolymerizing ethylene and 6C alpha olefin by making use of gas phase polymerization method process and possesses a melt index, density and a flow ratio of respectively 2g/10 minutes or lower, 0.910-0.945g/cm and 50 or lower, 0.5-10 pts.wt. high-density polyethylene whose melt index and flow ratio are respectively 0.1/10 minutes or lower and at least 70 and 0.5-20 pts.wt. ethylene-olefin copolymer whose melt index and density are respectively 20g/10 minutes or lower and 0.910g/cm or lower is used. Then inflation molding is performed under conditions where a blow-up ratio, draft rate and cooling speed index are respectively 0.9-20, 5-40 and 30 seconds or less. An obtained cylindrical film is heat-sealed and cut off along a direction crossing with a receiving direction.

14. 发明专利

JPH031944A DECORATIVE FILM 失效
公开(公告)号：JPH031944A
公开(公告)日：1991-01-08
申请号：JP13475589
申请日：1989-05-30
申请人： MITSUBISHI CHEM IND
发明人： FUJII TOSHIO , SHINOHARA YOSHINAO , HANDA KEISHIN
IPC分类号： B32B27/08 , B32B27/20 , B32B33/00
摘要： PURPOSE:To upgrade pearlescent gloss effect generated by irregular reflection by laminating a decorative film layer constituted of a thermoplastic resin film of specified thickness in which pearlescent pigment particles of specified grain diameter are dispersed by the specified volume ratio and a mirror gloss film layer having specified mirror gloss and transparency. CONSTITUTION:A decorative film layer is constituted of thermoplastic resin and pearlescent pigment particles dispersed in said resin, and said decorative film layer contains the pearlescent pigment particles at the ratio of 1 - 30 pts. wt. dispersed into 99 - 70 pts. wt. of thermoplastic resin. At that time, it is required that the larger part of grain diameter of pearlescent pigment particles should be 60 - 120 mum. It is desirable that the particles of grain diameter of 60 mum or less are not existing, but if existing, such particles should be 40 wt. % or less to the quantity of particles of 60 - 120 mum grain diameter, and also the particles of grain diameter of 120 mum or over should be 5 wt. % or less to the quantity of particles of grain diameter of 60 - 120 mum. Also, the tickness of said layer is required to be 30 - 120 mum. On the other hand, as a mirror gloss film layer, a film to be used should be 100 % or more of mirror gloss measured based on JIS Z 8741 and with 8 % or less of haze measured based on JIS K 6714. Superior mirror gloss can be retained by laminating said two film layers.

15. 发明专利

JPH02235613A MANUFACTURE OF FIBER REINFORCED THERMOSETTING SYNTHETIC RESIN MOLDING 失效
公开(公告)号：JPH02235613A
公开(公告)日：1990-09-18
申请号：JP5576589
申请日：1989-03-08
申请人： MITSUBISHI CHEM IND
发明人： GO SHIGEO , FUJII TOSHIO , KAMIZONO TETSUSHI , KONDO TOYOMITSU
IPC分类号： B29C43/34 , B29C39/00 , B29C39/24 , B29C45/00 , B29C70/06 , B29K105/12 , C08J5/04
摘要： PURPOSE:To make material sizing unnecessary and enable automatic molding by molten-kneading a web-shaped material containing thermoplastic synthetic resin and fibrous substance of 3-100mm in length at a specified volumetric rate by a screw type kneading extruding machine, and obtaining a molding then. CONSTITUTION:A web-shaped material containing thermoplastic synthetic resin of 60-90vol.%, fibrous substance of 10-40vol.% and fibers of 3-100mm in length is introduced into a screw type kneading extruding machine equipped with a heating unit inside a barrel and/or screw, and molten-kneading them, and then the molten kneaded matters are supplied into a molding mold or injection mold, and thus obtaining a molding. Olefin resin of polypropylene, polyethylene, ethylene-propylene copolymer or the like, and amide resin of nylon 6, nylon 6-10 or the like are sued as thermoplastic resin. And,inorganic fibers of glass fiber, carbon fiber, boron fiber or the like as well as organic fibers of synthetic or natural fiber can also be used as a fibrous substance.

16. 发明专利

JPH0236939A MANUFACTURE OF LAMINATED MATERIAL 失效
公开(公告)号：JPH0236939A
公开(公告)日：1990-02-06
申请号：JP18767488
申请日：1988-07-27
申请人： MITSUBISHI CHEM IND
发明人： FUJII TOSHIO , SHINOHARA YOSHINAO , HANDA KEISHIN
IPC分类号： B29C65/40 , B29K23/00 , B29L9/00 , B32B15/08 , B32B15/085
摘要： PURPOSE:To enable a laminated material which is excellent for adhesion of a polyolefin layer to a metal base material to be reasonable produced by a method wherein an adhesion layer of a specific thickness composed of modified polyolefin composition of a specific composition is used. CONSTITUTION:A polyolefin film or sheet having an adhesion layer of 0.5 to 20mum in thickness composed of a mixture of 0.1 to 5wt% to ethylene alpha-olefin copolymer of unsaturated carboxylic acid or 5 to 95wt% modified polyolefin which is modified by its anhydride and 95 to 5wt% unmodified polyolefin is prepared. The adhesion layer side of the sheet is adhered to a metal base material heated to a melting point of the adhesion layer or higher by pressing with a pressing roller. As unmodified polyolefin resin, polyolefin such as low density polyethylene, high density polyethylene, etc., is suitably used.

17. 发明专利

JPH0149302B2 失效
公开(公告)号：JPH0149302B2
公开(公告)日：1989-10-24
申请号：JP20730482
申请日：1982-11-26
申请人： MITSUBISHI CHEM IND
发明人： MATSUMOTO YOSHIO , FUJII TOSHIO , HASEGAWA KOICHI , SEKI IWAO
IPC分类号： C08L23/00 , C08K3/34 , C08K3/36 , C08K5/17 , C08K5/20 , C08K13/02 , C08L7/00 , C08L21/00 , C08L23/02 , C08L101/00

18. 发明专利

JPH01196333A MANUFACTURE OF PACKAGING BAG 失效
公开(公告)号：JPH01196333A
公开(公告)日：1989-08-08
申请号：JP2229888
申请日：1988-02-02
申请人： MITSUBISHI CHEM IND
发明人： FUJII TOSHIO , SHINOHARA YOSHINAO , YAMAGATA NOBUYUKI
IPC分类号： B29C55/28 , B29C65/00 , B29C65/74 , B29K23/00 , B29L7/00 , B31B23/00 , B31B50/64
摘要： PURPOSE:To improve the heat-sealing strength of linear low-density polyethylene as well as stabilize the film forming properties, by inflation-molding the blend of a specified linear low-density polyethylene, a specified high-density polyethylene and a specified ethylene-alpha olefin copolymer under a specified condition. CONSTITUTION:Linear low-density polyethylene is to be of a melt index of 10g/10min. or less, a density of 0.91-0.945g/cm and a fluidization of 70 or less, high-density polyethylene is to be of a melt index of 0.1g/10min. or less and a fluidization of 70 or more. The density of ethylene-alpha olefin copolymer is to be 0.910g/10min. or less and the melt index thereof is to be 20 or less. The blending ratio is used in the range of 70-99pts.wt. of linear low-density polyethylene, 0.5-10pts.wt. of high-density polyethylene and 0.5-20pts.wt. of ethylene-alpha olefin copolymer. The molding condition is to be 0.9-2 of blow-up ratio, 10-40 of draft ratio and 30sec or less of index of cooling rate.

19. 发明专利

JPS63218749A POLYETHYLENE RESIN COMPOSITION FOR EXTENSIBLE FILM 失效
公开(公告)号：JPS63218749A
公开(公告)日：1988-09-12
申请号：JP5078187
申请日：1987-03-05
申请人： MITSUBISHI CHEM IND
发明人： FUJII TOSHIO , HASEGAWA KOICHI , HANDA KEISHIN
IPC分类号： B22C9/03 , B22C9/02 , C08J5/18 , C08L23/00 , C08L23/06 , C08L23/08
摘要： PURPOSE:To obtain the titled composition having high extensibility, capable of being stuck fast to a mold of original form in vacuum in the use of sand mold for casting, by blending a specific copolymer of ethylene and an alpha-olefin with specific amounts of a linear low-density polyethylene and a plasticizer. CONSTITUTION:(A) 100pts.wt. copolymer of ethylene and >=3C alpha-olefin (e.g. propylene, etc.) having density and =500% elongation, density and 10-70 flow ratio and (C) 0.1-20pts.wt., preferably 0.2-10pts.wt. plasticizer (e.g. dimethyl phthalate, etc.).

20. 发明专利

JPS63175031A PRODUCTION OF ANTIFOGGING POLYOLEFIN FILM 失效
公开(公告)号：JPS63175031A
公开(公告)日：1988-07-19
申请号：JP557187
申请日：1987-01-13
申请人： MITSUBISHI CHEM IND
发明人： FUJII TOSHIO , HASEGAWA KOICHI
IPC分类号： B29C55/28 , B29K23/00 , B29L7/00 , C08J5/18 , C08K5/10 , C08K5/17 , C08K5/20 , C08K7/00 , C08K7/18 , C08L23/02
摘要： PURPOSE:To obtain the titled film having high transparency, by compounding a polyolefin resin, fine particles of an inorganic filler, an unsaturated fatty acid amide having low melting point and a polyhydric alcohol monoester of a specific fatty acid at specific ratios, extruding the obtained composition in molten state and quenching the product. CONSTITUTION:The objective film is composed of a polyolefin resin composition containing (A) 100pts.wt. of a polyolefin resin (preferably a low-density PE, etc., having a melt index of 0.4-10 and a density of 0.91-0.94g/cm ), (B) 0.02-1pt.wt. of an inorganic filler (preferably silica) having an average particle diameter of 2-10mu, (C) 0.05-1pt.wt. of an unsaturated fatty acid amide having a melting point of =60wt.%. The composition is extruded from a molding machine in molten state and solidified by quenching to

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