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1. 发明专利

JPH09286909A LACTIC ACID-BASED POLYMER FILM FOR AGRICULTURAL USE 失效
公开(公告)号：JPH09286909A
公开(公告)日：1997-11-04
申请号：JP10086796
申请日：1996-04-23
申请人： MITSUI TOATSU CHEMICALS
发明人： KOBAYASHI NAOKI , IMON SHUHEI , KOUNO AKIRA , KUROKI TAKAYUKI , WANIBE HIROTAKA
IPC分类号： A01G13/00 , A01G9/14 , A01G13/02 , B29C55/02 , B29K67/00 , B29L7/00 , C08J5/18 , C08K3/36 , C08K5/09 , C08K5/103 , C08K5/20 , C08L67/00 , C08L67/04
摘要： PROBLEM TO BE SOLVED: To prepare the subject film markedly improved in antimisting sustainability, excellent in transparency, with no mould growth during use, and useful for e.g. agricultural greenhouses, by incorporating a lactic acid-based polymer film with a specified amount of lubricant, etc. SOLUTION: This film is prepared by incorporating (A) 100 pts.wt. of a lactic acid-based polymer with (B) 0.1-5 pts.wt. of an antifogging agent, (C) 0.1-2 pts.wt. of a lubricant and/or (D) 0.1-5 pts.wt. of an antiblocking agent and (E) 0.1-2 pts.wt. of a fluorine-based surfactant as an antimisting agent. It is preferable that the component C is at least one kind of compound selected from the group consisting of fatty acid-based lubricant, fatty acid amide-based lubricant and montan wax, the component D is silica, and this film is such one as to be at least uniaxially oriented by a factor of 1.3-10 and is 0.01-2mm in thickness.

2. 发明专利

JPH06166024A PRODUCTION OF THERMOPLASTIC POLYIMIDE PELLET 失效
公开(公告)号：JPH06166024A
公开(公告)日：1994-06-14
申请号：JP31881292
申请日：1992-11-27
申请人： MITSUI TOATSU CHEMICALS
发明人： TAKEO MASAAKI , OTA YASUHIKO , MATSUMURA HIDEJI , ISAKI TAKEHARU , KOKADO NAOHIRO , KOUNO AKIRA
IPC分类号： B29B9/06 , B29C31/00 , B29K86/00
摘要： PURPOSE:To form a thermoplastic polyimide pellet by a method wherein a thermoplastic polyimide is supplied to an extruder as a granulated substance of a specific particle diameter and stably extruded by a fixed extruding amount. CONSTITUTION:A thermoplastic polyimide is granulated to be 50-1000mum in particle diameter. The granulated substance is supplied to an extruder. The substance less than 50mum in particle diameter is difficult to stably pelletize by a fixed extruding amount. The substance more than 1000mum in particle diameter is reduced in bitten amount to an extruder and results in the reduction of an extruding amount. After being supplied to the extruder, kneaded, melted, and extruded in a strand form, the polyimide granulated substance is cooled and cut into a predetermined size as a pellet. Therefore, the polyimide can be ideally transported through a feeder and favorably bitten to the extruder, and an air accompanying the resin in a barrel of the extruder easily flows back to a supply port. Thus, a fixed extruding amount is stably ensured.

3. 发明专利

JPH02127041A FILM FOR TWIST WRAPPING 失效
公开(公告)号：JPH02127041A
公开(公告)日：1990-05-15
申请号：JP28044688
申请日：1988-11-08
申请人： MITSUI TOATSU CHEMICALS
发明人： KOUNO AKIRA , KIMURA KAZUHIKO
IPC分类号： B65D65/38 , B29C55/04 , B29K23/00 , B29L9/00 , B32B7/02 , B32B27/32
摘要： PURPOSE:To prevent tearing at the time of lateral twist by thermocompression- bonding a straight chain low-density polyethylene film with a high-density polyethylene group film and forming a film for a twist wrapping through monoaxial stretching. CONSTITUTION:A high-density polyethylene filmy article extruded from a mold at 180-280 deg.C is cooled and solidified on a chill roll at 60-100 deg.C, thus shaping a film not oriented. The film not oriented is heated by a preheating roll at 80-120 deg.C, a previously film-formed straight chain low-density polyethylene film is heat-bonded between a pair of pinched metallic roll and rubber roll, and a thermal adhesive film is monoaxial-stretched at drawing speed of 30-12m/min and a draw ratio of 4-10 times, thus acquiring a film for twist wrapping. The film acquired has ductility, vertical tearing is prevented, lateral twist holding properties are improved, and excellent packaging-machine aptitude is obtained.

4. 发明专利

JPH02127022A FILM FOR TWIST WRAPPING 失效
公开(公告)号：JPH02127022A
公开(公告)日：1990-05-15
申请号：JP27946588
申请日：1988-11-07
申请人： MITSUI TOATSU CHEMICALS
发明人： KOUNO AKIRA , KIMURA KAZUHIKO
IPC分类号： B65D65/38 , B29C47/88 , B29K67/00 , B29L7/00
摘要： PURPOSE:To improve appropriateness for twist by melting by heat polyester resin of which the ultimate viscosity is in a specified range and of which the melting viscosity at a specified temperature is a specified poise of above, and by extruding the same within a specified range of a draw ratio. CONSTITUTION:Polyester resin of which the ultimate viscosity is 0.5 to 1.0 and of which the melting viscosity at the temperature of 265 deg.C is 2300 poise or above is melted by heating and extruded from a T die in a draw ratio within the range of 2 through 150. On the occasion of cooling, the temperature of a first chill roll is set at 40 deg.C to the glass transition point, while the temperature of a second chill roll cooling down the opposite side is set within the range of the glass transition point to the glass transition point +15 deg.C, and a low- orientation polyester film is obtained by this cooling. This method enables attainment of the polyester film being excellent in appropriateness for twist, having physical properties balanced between the length and the width and being excellent in transparency.

5. 发明专利

JPS63304032A FILM FOR SHRINK PACKAGING 失效
公开(公告)号：JPS63304032A
公开(公告)日：1988-12-12
申请号：JP13828887
申请日：1987-06-03
申请人： MITSUI TOATSU CHEMICALS
发明人： KOUNO AKIRA , MATSUTOMO KAZUYUKI , KIKUMOTO HIROFUMI
IPC分类号： B65D65/02 , C08J5/18 , C08L23/08 , C08L23/16 , C08L57/02 , C08L65/00
摘要： PURPOSE:To obtain a film for shrink packaging, having excellent transparency and gloss, by blending ethylene.propylene random copolymer with petroleum polymer, etc., and ethylene.alpha-olefin polymer in a specific proportion, melt forming a film and uniaxially orienting the formed film. CONSTITUTION:A polymer composition consisting of 45-87wt.% ethylene.propylene random copolymer (preferably with 3-6mol.% ethylene content), 10-40wt.% petroleum polymer and/or terpene type polymer (preferably having 60-150 deg.C melting point) and 3-15wt.% ethylene.alpha-olefin polymer (preferably 1-butene, etc.) is melt formed into a film, which is then uniaxially oriented to afford the aimed film for shrink packaging, having 1-3g/10min melt flow index, -30--60% heat distortion ratio in the orienting direction after heating in an oven at 120 deg.C for 15min and

6. 发明专利

JPS60233137A FILM FOR TWIST WRAPPING 失效
公开(公告)号：JPS60233137A
公开(公告)日：1985-11-19
申请号：JP8838084
申请日：1984-05-04
申请人： MITSUI TOATSU CHEMICALS
发明人： KOUNO AKIRA , UEJIMA TAMOTSU , KAKIHARA SUKEAKI
IPC分类号： C08L23/04 , B29C55/04 , B29K23/00 , B65D65/02 , C08J5/18 , C08L7/00 , C08L21/00 , C08L23/00 , C08L101/00
摘要： PURPOSE:A film having improved transparency, twist remaining properties, and warp tear resistance, comprising a specific polyethylene resin and a specified straight-chain low-density polyethylene resin. CONSTITUTION:(A) 100pts.wt. polyethylene resin having >=0.94, preferably >=0.95 density and 8-15, preferably 9-13 MI10/MI2.16 is blended with (B) 5-50pts.wt., preferably 10-40pts.wt. straight-chain low-density polyethylene resin having 0.91-0.95 density, and 0.5-20, preferably 1.0-5.0 MI. Propylene, 1-butene, etc. are used as an alpha-olefin to be copolymerized in the component B, and an amount of the alpha-olefin is 0.5-10wt%.

7. 发明专利

JPS5842609A SELF-STICKING WRAPPING FILM 失效
公开(公告)号：JPS5842609A
公开(公告)日：1983-03-12
申请号：JP13982481
申请日：1981-09-07
申请人： MITSUI TOATSU CHEMICALS
发明人： HOSONUMA MAKOTO , KOUNO AKIRA
IPC分类号： C08L23/00 , B65D65/00 , B65D65/02 , C08F10/00 , C08F210/00 , C08F210/06 , C08F210/16 , C08J5/18 , C08L7/00 , C08L21/00 , C08L23/14 , C08L101/00
摘要： PURPOSE:The titled film having remarkably excellent stickiness, consisting mainly of a polypropylene resin composition which is a random copolymer of a propylene monomer and at least a specified amount of other copolymerizable alpha- olefin monomers. CONSTITUTION:The titled film is obtained by using, as the principal component, a propylene resin composition consisting of a random copolymer of a propylene monomer and at least 5wt% other copolymerizable alpha-olefin monomers. Moreover, according to a preferred embodiment of this film, use is made of, as the random copolymer, a two-stage polymerization product obtained by producing 5-20wt% polypropylene polymer in the first stage polymerization and copolymerizing the propylene monomer in the presence of other alpha-olefins in the second stage polymerization. As compared with a general one-stage process, this process can provide the titled material having higher stickiness more economically.

8. 发明专利

JPH07117047A PRODUCTION OF THERMOPLASTIC RESIN PELLET 失效
公开(公告)号：JPH07117047A
公开(公告)日：1995-05-09
申请号：JP26342493
申请日：1993-10-21
申请人： MITSUI TOATSU CHEMICALS
发明人： KOUNO AKIRA , OTA YASUHIKO , MATSUMURA HIDEJI , KOKADO NAOHIRO , JITOSHO HIROYUKI , YANO SHIGERU
IPC分类号： B29B9/06 , B29B13/04
摘要： PURPOSE:To enhance a workability in producing pellets without entrapment of bubbles inside by a method wherein thermoplastic resin strands are extruded into grooves of a cooling roll having the ring grooves at right angles to the direction of a rotating shaft, held therein, and cooled while the non-contact surfaces thereof are cooled by a cooling belt, and the strands are cut. CONSTITUTION:Under a strand die 1, a cooling roll 4 provided with ring grooves 5 on the surface thereof at right angles to a rotating shaft is controlled to be cooled to a predetermined temperature range. Strands 2 in a melt state extruded from the die 1 are led into the ring grooves 5 of the cooling roll 4 at contact points 3 to be cooled. Between the contact point 3 and a release point 6, the strand 2 in tne ring groove 5 is held by a cooling belt 9 controlled to a predetermined temperature range. Thus, the both surface of the strand 2 are cooled to the order of a room temperature. The strands 2 are cut into pellets 15 by a cutter 14. The predetermined temperature range is a temperature range 5 deg.C lower than the glass transition point of a thermoplastic resin to a room temperature. Therefore, the strand is not quickly cooled, thus being prevented from foaming, and bubble-free pellets can be easily produced.

9. 发明专利

JPH0648458A TWIST WRAPPING FILM AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH0648458A
公开(公告)日：1994-02-22
申请号：JP19830592
申请日：1992-07-24
申请人： MITSUI TOATSU CHEMICALS
发明人： KOUNO AKIRA , MATSUMURA HIDEJI , KOKADO NAOHIRO , ARIMOTO MASASHI , JITOSHO HIROYUKI , MIYAKE TAKAHITO
IPC分类号： B65D65/40 , C08G64/00 , C08J5/18
摘要： PURPOSE:To provide a polycarbonate resin film which has an excellent twist properties and vertically and laterally well-balanced physical properties, is excellent in transparency, has an appropriate hygroscopicity, and is suitable for twist wrapping. CONSTITUTION:A polycarbonate resin of which MFR at 280 deg.C is 2-50g/10min is heat-molten and extruded from a die, and is formed into a film by a draw ratio of 2-150 when it is hauled by a haul-off machine. When the formed film is cooled, the temperature of a first cooling roll is set to be 70 deg.C - the glass transition temperature of the resin, and the temperature of a second cooling roll which cools the opposite surface of the film is set to be 20-90 deg.C to cool and obtain the title polycarbonate resin film for twist wrapping.

10. 发明专利

JPH0623827A PRODUCTION OF POLYCARBONATE SHEET 失效
公开(公告)号：JPH0623827A
公开(公告)日：1994-02-01
申请号：JP18216892
申请日：1992-07-09
申请人： MITSUI TOATSU CHEMICALS
发明人： MATSUMURA HIDEJI , OTA YASUHIKO , KOUNO AKIRA , ISAKI TAKEHARU , ARIMOTO MASASHI , KOKADO NAOHIRO
IPC分类号： B29C47/14 , B29C47/88 , B29K69/00 , B29L7/00
摘要： PURPOSE:To obtain polycarbonate sheet good in surface conditions and excellent in transparency by a method wherein a sheet-like material is cooled by a polishing roll having a plating layer of a specific thickness on its surface. CONSTITUTION:Polycarbonate or polycarbonate composition is kneaded, melted and extruded by using an extruder into the form of a sheet. The resulting sheet-like material is then cooled by using a specific polishing roll to obtain a polycarbonate sheet. This polishing roll has a hard chrome plating layer having a thickness of 20-80mum on its surface. The polycarbonate is the resin which is obtained by the condensation polymerization of divalent phenol compound, glycol monomer or the mixture thereof and carbonic acid derivative or by allowing phosgene to react with divalent phenol compound, glycol monomer or the mixture thereof in the presence of alkali.

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