-
公开(公告)号：JPH04275340A
公开(公告)日：1992-09-30
申请号：JP3639491
申请日：1991-03-01
Applicant: TORAY INDUSTRIES
Inventor： SUMIYA TAKASHI , FUNAYAMA NOBUTAKA , YAMAGISHI HIDEKI
Abstract: PURPOSE:To solve a problem such as control of lowering of flat property of film by heat shrinkage of heat sink, curl, etc., by stabilizing thermal behavior after film forming. CONSTITUTION:A biaxially oriented polyester film capable of giving at least >=2 endothermic peaks in addition to melting peak in heat analysis, being within the range of 20-130 deg.C in the difference of temperature between endothermic peak at maximum temperature and endothermic peak at the lowest temperature and being 0.8-0.5% in heat shrinkage.
-
公开(公告)号：JPH04275132A
公开(公告)日：1992-09-30
申请号：JP3639691
申请日：1991-03-01
Applicant: TORAY INDUSTRIES
Inventor： SUMIYA TAKASHI , FUNAYAMA NOBUTAKA , YAMAGISHI HIDEKI
Abstract: PURPOSE:To suppress the lowering of the flatness of a film due to heat shrinkage such as unevenness or a curl by stabilizing heat behavior after processing. CONSTITUTION:A biaxially stretched polyester film wherein at least two or more endothermic peaks are observed other than a melting peak at the time of thermal analysis and the temp. difference between the endothermic peak of the highest temp. and that of the lowest temp. excepting the melting peak is within the range of 20-130 deg.C and heat shrinkage factors at 150 deg.C in longitudinal and lateral directions are 0.8-0.5% has a water-soluble or water-dispersible resin layer with thickness of 0.001-0.3mum on at least the single surface thereof.
-
Patent Agency Ranking
公开(公告)号：JPH0441297A
公开(公告)日：1992-02-12
申请号：JP14911690
申请日：1990-06-06
Applicant: TORAY INDUSTRIES
Inventor： FUNAYAMA NOBUTAKA , SUMIYA TAKASHI , KATAYAMA ICHIRO
Abstract: PURPOSE:To obtain a ribbon for heat transfer with excellent printing performance by specifying a rate of change in dimension with respect to a temperature and an original length of a biaxially oriented polyester film at a point where gradient changes from negative to positive in a horizontal temperature dimension varying curve thereof. CONSTITUTION:Biaxially oriented polyester film has a point (minimal point) at which gradient changes from negative to positive in a horizontal temperature dimension varying curve of the film when the curve is measured and a rate of change in dimension is -5-+5% with respect to an original length of the film at the minimal point with the temperature at the minimal point exceeding 200 deg.C. When the temperature at the minimal point is lower than 200 deg.C or the rate of change in dimension at the minimal point is lower than -5% even with the temperature exceeding 200 deg.C, shrinking of the film during the printing increases to cause wrinkles in the film, which disables printing. When the rate of change in dimension at the minimal point is larger than +5%, the elongation of the film increases as caused by heat applied in the coating of an ink layer and a rear treated layer to make the film sag. which causes a coating spot. This eliminates a wrinkling in the ribbon for heat transfer during the printing thereby enabling the obtaining of a clear print.
-
公开(公告)号：JPH01209187A
公开(公告)日：1989-08-22
申请号：JP3629988
申请日：1988-02-17
Applicant: TORAY INDUSTRIES
Inventor： YOSHII TOSHIYA , NAKAHARA KOJI , FUNAYAMA NOBUTAKA
Abstract: PURPOSE:To suppress drop-out or hot sticking of a thermal transfer foil, by applying a specified coating agent to one side of a biaxially oriented polyester film having a specified thickness and a specified average surface roughness, and setting the electrification potential of the other side of the film to within a specified range. CONSTITUTION:A biaxially oriented polyester film for a thermal transfer foil comprises a layer of a mixture of a thermoplastic and/or thermosetting resin with an organosiloxane on one side of the film, having a thickness of 1-10mum and an average surface roughness of 0.06-0.25mum, with the electrification potential on the other side of the film being in the range of 50-1,500V. If the film thickness is less than 1mum, operability is poor, whereas if the thickness is more than 10mum, thermal conductivity is poor. If the average surface roughness is less than 0.06mum, hot sticking is liable to occur between the back side of the thermal transfer foil and a thermal head, resulting in generation of a larger number of drop-out parts. If the average surface roughness is more than 0.25mum, a larger number of drop-out parts are generated due to defective heat transfer. If the electrification potential is outside the range of 50-1,500V, the number of drop-out parts generated is increased.
-
公开(公告)号：JPH01141007A
公开(公告)日：1989-06-02
申请号：JP30046587
申请日：1987-11-27
Applicant: TORAY INDUSTRIES
Inventor： NAKAHARA KOJI , MATSUSHIMA KEISUKE , FUNAYAMA NOBUTAKA
Abstract: PURPOSE:To obtain a ceramic roll used for heating a synthetic resin sheet, preventing self-adhesion between a sheet-like material and the roll from occurring and producing no flaw on the surface of the sheet, by making the surface shape of a ceramic-coated roll to be appropriate. CONSTITUTION:Average roughness on the central line of the surface roughness of a ceramic roll is 0.7-2.0mum. If the average roughness 4 of the central line is lower than the lower limit of the above-described range, self-adhesion between the roll and a synthetic resin sheet tends to occur and on the contrary, if it is higher than the upper limit of the above-described range, the synthetic resin sheet slips on the roll and it causes occurrence of flaw. Moreover, the max. depth of the surface roughness is 15mum or smaller. If the max. depth is larger than the upper limit of the above- described range, as the thermal conductivity is powered, crater-shaped spots are partially transferred on the synthetic resin sheet and the appearance becomes worse. No. of recessed parts (roughness density) of 0.5mum or larger are 17-28/mm length. If the roughness density exceeds the upper limit of the above-described range, the synthetic resin sheet slips and it causes occurrence of flaw. On the contrary, it becomes less than the lower limit of the above-described range, the synthetic resin sheet becomes easily adhered with the roll.
-
公开(公告)号：JPS6416650A
公开(公告)日：1989-01-20
申请号：JP17343787
申请日：1987-07-10
Applicant: TORAY INDUSTRIES
Inventor： SHIBATSUJI KUNIO , NAKAHARA KOJI , FUNAYAMA NOBUTAKA
Abstract: PURPOSE:To improve the folding property of a packaging material after breaking the seal thereof, by laminating a specified biaxially oriented film and a heat seal layer. CONSTITUTION:A heat seal layer is provided on one side of a biaxially oriented film, consisting of the copolymer of polyethylene terephthalate having a yield point in the stress-strain curve thereof and satisfying the relation of 0.003
-
公开(公告)号：JPS6331570A
公开(公告)日：1988-02-10
申请号：JP17179386
申请日：1986-07-23
Applicant: TORAY INDUSTRIES
Inventor： FUNAYAMA NOBUTAKA , YAMAGISHI HIDEKI , KIRIMURA SHUNICHIRO
Abstract: PURPOSE:To perform uniform thin painting, by charging a liquid droplet having a specific particle size and adhering the charged liquid droplet to the running web on a metal roll being earthed. CONSTITUTION:A liquid is supplied from a liquid supply port 4 and formed into liquid droplets having a particle size of 0.05-50 mum by an ultrasonic sprayer 3 to be injected from a slit like nozzle 6 expanded in the same direction as the lateral direction of a film along with compressed air supplied from a compressed air supply port 5. The liquid droplets 7 pass in the vicinity of the electrode 8 of a Corotron type charger at a place issued from the nozzle 6 to be charged positively or negatively. The charged liquid droplets 7 are electrically attracted by the charging polarity opposite to that of said droplets induced on the surface of the metal roll 2 present on the back surface of a running web 1 and adhered to the surface of the web 1 to form a thin film.
-
-
-
-
-
-
Search Results
37
records
(took 0.068 seconds)
