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1. WO2007145231 - HEAT-SHRINKABLE POLYESTER FILM AND PROCESS FOR PRODUCTION THEREOF

Publication Number WO/2007/145231
Publication Date 21.12.2007
International Application No. PCT/JP2007/061860
International Filing Date 13.06.2007
IPC
B29C 61/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
61Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
06Making preforms having internal stresses, e.g. plastic memory
B29C 55/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
10multiaxial
12biaxial
14successively
C08J 5/18 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5Manufacture of articles or shaped materials containing macromolecular substances
18Manufacture of films or sheets
CPC
B29C 55/146
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
10multiaxial
12biaxial
14successively
146firstly transversely to the direction of feed and then parallel thereto
B29C 61/003
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
61Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
003characterised by the choice of material
B29C 61/06
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
61Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
06Making preforms having internal stresses, e.g. plastic memory
B29K 2067/00
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2067Use of polyesters ; or derivatives thereof; , as moulding material
B29K 2995/0049
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2995Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
0037Other properties
0049Heat shrinkable
C08J 2367/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2367Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain
02Polyesters derived from dicarboxylic acids and dihydroxy compounds;
Applicants
  • 東洋紡績株式会社 TOYO BOSEKI KABUSHIKI KAISHA [JP]/[JP] (AllExceptUS)
  • 遠藤 卓郎 ENDO, Takurou [JP]/[JP] (UsOnly)
  • 春田 雅幸 HARUTA, Masayuki [JP]/[JP] (UsOnly)
  • 多保田 規 TABOTA, Norimi [JP]/[JP] (UsOnly)
  • 野瀬 克彦 NOSE, Katsuhiko [JP]/[JP] (UsOnly)
Inventors
  • 遠藤 卓郎 ENDO, Takurou
  • 春田 雅幸 HARUTA, Masayuki
  • 多保田 規 TABOTA, Norimi
  • 野瀬 克彦 NOSE, Katsuhiko
Priority Data
2006-16521214.06.2006JP
2006-35536528.12.2006JP
2007-15487412.06.2007JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) HEAT-SHRINKABLE POLYESTER FILM AND PROCESS FOR PRODUCTION THEREOF
(FR) FILM POLYESTER THERMORÉTRACTABLE ET SON PROCÉDÉ DE PRODUCTION
(JA) 熱収縮性ポリエステル系フィルム、およびその製造方法
Abstract
(EN)
A heat-shrinkable polyester film which causes the main shrinkage in the lengthwise direction and which is controlled in such a way that the lengthwise and widthwise heat shrinkage factors observed when treated in warm water of 90°C for 10 seconds, the lengthwise and widthwise refraction indexes, and the natural shrinkage factor observed after the aging at 40°C and 65%RH for 700 hours fall within prescribed ranges respectively. The heat-shrinkable polyester film can be produced by stretching an unstretched film at a temperature ranging from the Tg plus 5°C to the Tg plus 40°C at a draw ratio of 2.5 to 6.0 in the widthwise direction, passing the resulting film through an intermediate zone not accompanied with positive heating, heat-treating the film at 100 to 170°C for 1.0 to 10.0 seconds, cooling the film to lower the surface temperature of the film to a temperature of 30 to 70°C, stretching the film at a temperature ranging from the Tg plus 5°C to the Tg plus 80°C at a draw ratio of 2.0 to 7 in the lengthwise direction, and then cooling the film at a cooling rate of 30 to 70°C/sec to lower the surface temperature of the film to a temperature of 45 to 75°C.
(FR)
La présente invention concerne un film polyester thermorétractable dans lequel le retrait principal se produit dans la direction de la longueur et qui est régulé de telle manière que les facteurs de thermorétraction en longueur et en largeur observés quand le film est traité dans de l'eau chaude à 90 °C pendant 10 secondes, les indices de réfraction en longueur et en largeur et le facteur de retrait naturel observé après un vieillissement à 40 °C et 65 % d'humidité relative pendant 700 heures tombent respectivement dans des limites prescrites. Le film polyester thermorétractable peut être produit en étirant un film non étiré à une température allant de la Tg plus 5 °C à la Tg plus 40 °C à un rapport d'étirage de 2,5 à 6,0 dans la direction de la largeur, en faisant passer le film résultant dans une zone intermédiaire sans chauffage positif, en traitant thermiquement le film entre 100 et 170 °C pendant 1,0 à 10,0 seconds, en refroidissant le film pour abaisser la température superficielle du film à une température de 30 à 70 °C, en étirant le film à une température allant de la Tg plus 5 °C à la Tg plus 80 °C à un rapport d'étirage de 2,0 à 7 dans la direction de la longueur, puis en refroidissant le film à une vitesse de refroidissement de 30 à 70 °C/s pour abaisser la température superficielle du film à une température de 45 à 75 °C.
(JA)
not available
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