JPS5656827A - Polyamide film - Google Patents

Polyamide film

Info

Publication number
JPS5656827A
JPS5656827A JP13291379A JP13291379A JPS5656827A JP S5656827 A JPS5656827 A JP S5656827A JP 13291379 A JP13291379 A JP 13291379A JP 13291379 A JP13291379 A JP 13291379A JP S5656827 A JPS5656827 A JP S5656827A
Authority
JP
Japan
Prior art keywords
film
stretched
stretching
alpha type
polyamide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP13291379A
Other languages
Japanese (ja)
Other versions
JPS6227982B2 (en
Inventor
Kenji Tsunashima
Seizo Aoki
Masabumi Sakubayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP13291379A priority Critical patent/JPS5656827A/en
Publication of JPS5656827A publication Critical patent/JPS5656827A/en
Publication of JPS6227982B2 publication Critical patent/JPS6227982B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a biaxially stretched polyamide film which is provided with a specific crystallinity, a specific crystalline size and a specific refraction index, large in vapor permeability and excellent in water absorbing dimension stability. CONSTITUTION:In order to obtain a vertical uniaxial stretched film in which the crystallinities of crystals excepting alpha type one show 50-80% of the total crystallinity, a nonoriented cost film obtained when polyamide such as nylon 6 and the like is fused and extruded is stretched at a high speed under a stretching magnification OB corresponding to a point A showing the same stretching tension OC as a stretching yield point Y so that the yield point Y may appear and at 80% or more of the stretching magnification OB. Then, the film is stretched preferably 3-6 times in a width direction and undergoes a primary heat treatment at 120-180 deg.C. Subsequently, the biaxially oriented film is stretched again in a longitudinal direction, so that a general vertical stretching magnification may have preferably 3-6 times at 125- 185 deg.C in order to obtain the purposed polyamide film in which the crystallinities of crystals excepting the alpha type one show 10% or less and the crystalline size of the alpha type crystal takes 60Angstrom or less.
JP13291379A 1979-10-17 1979-10-17 Polyamide film Granted JPS5656827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13291379A JPS5656827A (en) 1979-10-17 1979-10-17 Polyamide film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13291379A JPS5656827A (en) 1979-10-17 1979-10-17 Polyamide film

Publications (2)

Publication Number Publication Date
JPS5656827A true JPS5656827A (en) 1981-05-19
JPS6227982B2 JPS6227982B2 (en) 1987-06-17

Family

ID=15092444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13291379A Granted JPS5656827A (en) 1979-10-17 1979-10-17 Polyamide film

Country Status (1)

Country Link
JP (1) JPS5656827A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001341198A (en) * 2000-06-02 2001-12-11 Unitika Ltd Biaxially stretched polyamide film and method for manufacturing the same
WO2013137153A1 (en) * 2012-03-16 2013-09-19 出光ユニテック株式会社 Biaxially-stretched nylon film, laminate film, laminate packaging material, and manufacturing method for biaxially-stretched nylon film
WO2013146455A1 (en) * 2012-03-28 2013-10-03 出光ユニテック株式会社 Biaxially stretched nylon film, laminate film, laminate packing material, and method for manufacturing biaxially stretched nylon film
CN112243448A (en) * 2018-11-05 2021-01-19 株式会社Lg化学 Polyamide resin, and polymer film and resin laminate using same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5318669A (en) * 1976-08-05 1978-02-21 Toyo Boseki Method of producing biaxially stretching polyamid film

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5318669A (en) * 1976-08-05 1978-02-21 Toyo Boseki Method of producing biaxially stretching polyamid film

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001341198A (en) * 2000-06-02 2001-12-11 Unitika Ltd Biaxially stretched polyamide film and method for manufacturing the same
WO2013137153A1 (en) * 2012-03-16 2013-09-19 出光ユニテック株式会社 Biaxially-stretched nylon film, laminate film, laminate packaging material, and manufacturing method for biaxially-stretched nylon film
WO2013146455A1 (en) * 2012-03-28 2013-10-03 出光ユニテック株式会社 Biaxially stretched nylon film, laminate film, laminate packing material, and method for manufacturing biaxially stretched nylon film
CN112243448A (en) * 2018-11-05 2021-01-19 株式会社Lg化学 Polyamide resin, and polymer film and resin laminate using same
EP3789423A4 (en) * 2018-11-05 2021-09-01 Lg Chem, Ltd. Polyamide resin, and polymer film and resin laminate which use same
EP3789422A4 (en) * 2018-11-05 2021-09-08 Lg Chem, Ltd. Polyamide resin, and polymer film and resin laminate each using same
JP2021526569A (en) * 2018-11-05 2021-10-07 エルジー・ケム・リミテッド Polyamide resin, polymer film and resin laminate using this
TWI779246B (en) * 2018-11-05 2022-10-01 南韓商Ｌｇ化學股份有限公司 Polyamide resin, and polymer film, resin laminate using the same

Also Published As

Publication number Publication date
JPS6227982B2 (en) 1987-06-17

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