WO2000056547A1 - Films multicouches en propylene opaques et nacres a orientation biaxiale possedant des proprietes ameliorees - Google Patents

Films multicouches en propylene opaques et nacres a orientation biaxiale possedant des proprietes ameliorees Download PDF

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Publication number
WO2000056547A1
WO2000056547A1 PCT/TR1999/000013 TR9900013W WO0056547A1 WO 2000056547 A1 WO2000056547 A1 WO 2000056547A1 TR 9900013 W TR9900013 W TR 9900013W WO 0056547 A1 WO0056547 A1 WO 0056547A1
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WO
WIPO (PCT)
Prior art keywords
equal
less
film
opaque
films
Prior art date
Application number
PCT/TR1999/000013
Other languages
English (en)
Inventor
Cumhur BÜYÜKAKINCI
Turgut Selbasti
Oktay Aral
Hasan YEŞILTUNA
Kemal Alptekin
Original Assignee
Polinas Plastik Sanayi Ve Ticaret A.Ş.
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 Polinas Plastik Sanayi Ve Ticaret A.Ş. filed Critical Polinas Plastik Sanayi Ve Ticaret A.Ş.
Priority to AU36348/99A priority Critical patent/AU772959B2/en
Priority to PCT/TR1999/000013 priority patent/WO2000056547A1/fr
Priority to TR2001/00853T priority patent/TR200100853T2/xx
Publication of WO2000056547A1 publication Critical patent/WO2000056547A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/41—Opaque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Definitions

  • the present invention concerns the field of plastics fabrication and uses, specifically, biaxially oriented polypropylene multilayer opaque-pearlised films with improved physicomechanical properties.
  • the packaging food and non-food industry, agriculture, industrial markets, art, etc. has a high demand for biaxially oriented thin films of different types such as opaque, matte, colorless, antifog, antibacterial, photosensitivity, biodegradable, heat-sealable, non heat-sealable, monoand multilayer, laminated, metallizated and other films and materials.
  • Opaque appearance films can be produced by using conventional film- forming polymers such as polyesters, polyamides, polyolefins, vinyl chloride polymers, styrene polymers, etc., and organic and inorganic fillers (CaCO 3 , TiO , etc.), and different methods for preparation of opaque surfaces.
  • film- forming polymers such as polyesters, polyamides, polyolefins, vinyl chloride polymers, styrene polymers, etc., and organic and inorganic fillers (CaCO 3 , TiO , etc.
  • Patent US 4560614 describes nonblocking opaque biaxially oriented polypropylene film filled with inorganic filler such as talc to prevent blocking.
  • the film also contain TiO on the surface for paperlike properties. Resulted nonblocking film have good printability, adhesion, and ink and adhesive wet out.
  • said films did not contain CaCO 3 -based special filler in the core polypropylene layer and antistatic agent in the skin layers, and therefore did not possess pearlecent lustre and antistatic properties, and also have relatively low fight transmission (25 %).
  • Patent EP 0317276 B I describes biaxially oriented polypropylene film with good crease and twist retention containing 15 % of ⁇ -methylstyrene-vinyltoluene- indene terpolymer and/or organic (polyester or polyamide) and inorganic (CaCO 3 ,
  • BaSO 4 , talc, etc. fillers conventional antistatic and/or slip agents and organosilicon surfactant.
  • thermoplastic films with improved heat-lealing properties containing biaxially oriented propylene polymers such as polypropylene, ethylene(4 %)-propylene copolymer and ethylene-propylene- ⁇ -olefin (C . 10 ) terpolymer, finely distributed inorganic fillers (CaCO 3 , TiO 2 , silicates, preferably zeolites, silica, etc.).
  • said opaque films contain CaCO 3 and TiO 2 as a fillers and silica as an antiblocking agent.
  • said films were prepared in sheet of tubular form and were contained ethylene-propylene copolymer as a based layer and ethylenepropylene- ⁇ -olefin (C 4- ⁇ 0 ) terpolymer as a heat-sealable layer, organic opaque particles, which were not corona-treated, and had high density (0.9 glcm 3 ) and relatively low output, and also had not antistatic and slip properties.
  • the base layer furthermore contained aliphatic alkylamine as antistatic agent.
  • extruded four-layer film was taken off a first take-off roll and further trio of rolls. The film was then cooled, subsequently stretched longitudinally and transversely, set and corona treated.
  • the films resulted has matte appearance with gloss (85° angle, D side) 29-84, coefficient of friction 0.4-0.6, whiteness (D side) 65-81, opacity (D side) 67-70 and density 0.69-0.94 %.
  • the multilayer film according to this patent invention was distinguished by a multiplicity of advantageous properties and was recommended for wide variety of applications such as an attractive matte lamination film, an opaque packaging film in high-speed packaging machines, an opaque film in wrapping film, and a base film for adhesive tape or for aqueous barrier coating systems.
  • the film was also suitable for the production of plastic labels and laminates with paper, cardboard, metals, and metalized plastic films.
  • Biaxially oriented polypropylene opaque film with 44 ⁇ m thickness is prepared by use cyclopentadiene based petroleum resins with softening point (T s .) 160-230°C as an opaque filler and have average transmission of 22 % against 95 % for a film containing a petroleum resin with T s , 145°C instead [Pat. 04-20542, 1992, Japan].
  • Antifogging polyolefin composition useful for molding films used in packaging photosensitive materials comprises a mixture of ethylene(3.2 %)-propylene random copolymer (60 %) and ethylene (21 %)-propylene block copolymer (38.9 %), oleic amide as a lubricant (0.1 %), glycerol monostearate as a dripproofmg agent (0.2 %), dibenzyhdene sorbitol as an organic nucleating agent (0. I %), CaCO (0.2 %) and TiO 2 (0.3 %) as an inorganic nucleating agents, phenolic and phosphor-containing antioxidants (0.2 %) [Eur. Pat. EP 524404, 1993)].
  • Multilayer polymer paper with good offset printability and pencil writability comprise a base layer from CaCO 3 -filled (3-35 %) stretched film of polyolefins, an inner layer from ethylenevinyl alcohol copolymer, a top layer from inorganic- filled (8-65 %) stretched film of polyolefins, multilayer laminate with polypropylene (80 %), HDPE (8 %) and CaCO 3 (12 %) [Pat. 05-00490, 1993, Japan].
  • Oriented polypropylene synthetic paper with good ink receptivity and opacity having suitable writability and printing properties comprises an extruded core layer from polypropylene, CaCO 3 and TiO 2 and an extruded skin layer on > I side thereof containing styrene polymers, modified polypropylene, CaCO 3 , TiO , and co- and/or terpolymers of ethylene [Eur. Pat. EP 605938, 1994].
  • the prototype of the present invention is Pat. TR 97/00058 Al, 1997 (Turkey).
  • This patent describes biaxially oriented polypropylene opaque- pearlised films, process for their manufacture and use of films.
  • Title multilayer films with 20-60 ⁇ m thickness, high yield (51-62 m 2 lkg), low density (0.62-0.65 g/cm 3 ) and relatively good phisico-mechanical properties (light transmission 30-
  • TD dynamic friction coefficient 0.25-0.30, water vapour transmission 3.5-4.0 g/m -24 h, oxygen permeability 2100-2500 cm /m -24 -24 h-atm and wetting tension 38-42 dyne/cm), specially useful for roll-fed labelling and food, confectionery, cold-seal and heatsealable packaging materials as well as for high-speed packaging machine, comprising virgin and/or marked polypropylene (0.01-0.001 % of 5-cholesten-30-ol as a tracer agent), LDPE, HDPE, white pigment (TiO2), pearlised filler (CaCO3), and conventional antistatic, slip and antiblocking agents were prepared by using the tandem extruder system supllied with three independent co-extruders, and air corona- discharge, 'bifference and deficiency of these films as compared with films of present invention are following: multilayer films non contain an outer layer comprising virgin or marked polypropylene, LDPE, CaCO
  • the aim of the present invention is the attempt to remove these deficiences.
  • it is an object of the present invention to design and prepare a multilayer structure for biaxially oriented polypropylene based opaque-pearlised film in addition containing outer layer with given composition (Table 3) which is provided advantageous properties as compared with known and commercial films.
  • the present invention describes a four-layer biaxiafly oriented polypropylene opaque pearlised films having advantageous properties such as dimensional stability, low density, high adhesion, tear strength, tensile strength and elongation at break, and high surface tension after storage for 6 months.
  • the films of the present invention as compared with commercial opaque film also have advantageous properties (Tables I and 2).
  • the technological aspect of manufactured process of said films is distinguished from known processing [Pat. TR 97/00058 ⁇ l, Turkey] used in the production of opaque-pearlised films by the fact that tandem extruder system with two main extruders supplied with three satellite co-extruders, recycling line and corona discharge.
  • the process is carried out by three chill-roll treatments and two step of longitudinal orientation allowing to prepare good homogenized matte film with improving surface properties and dimensional stability.
  • One or both surface of biaxially oriented films prepared are treated in a known manner by air corona discharge.
  • the use of said recycling line for film waste forming in the transverse stretching stage allows to lower film cost by 3.5 %.
  • the extruded five-layer film is taken off over the corresponding process steps through a chill roll and cooled, and cast film profile is controlled by P-Gauge equipment.
  • the film is subsequently stretched longitudinally at two steps and stretched transversely. After biaxially orientation, the film is set and air corona-treated on one or two sides.
  • Extrusion extrusion temperature 200-260°C, first chill roll temperature 35-45°C
  • Machine (longitudinal) stretching stretching roll temperature of first step 140-150°C and second step 120-130°C, longitudinal stretching ratio 5:1 - 6:1 for first step and 1: 1 - 1:2 for second step
  • Transverse stretching temperature of heat-up zones 150-165°C, temperature of stretching zones 170-180°C, transverse stretching ratio 9:1 - 10:1
  • Recycling edges of the biaxially orientated film is recycled and fed to the line again
  • Setting setting temperature 165-170°C
  • Air corona discharge voltage 15-25 kV and frequency 20-30 kHz.
  • A/B/C/D structure multilayer film with a thickness of 27,um comprising (A) 1.2 ⁇ m outer layer from 69.37 % by weight of polypropylene (density 0.90- 0.91g/cm 3 3-6 g/ 10 min at 230°C and load at 21.6 N, m.p.
  • opaque-pearlised film After biaxially stretching [10 times at 165 'C in the transverse direction, TD and 6 times at 150°C in the machine (longitudinal) direction, NM] and air corona discharged of one or both surfaces in the given conditions opaque-pearlised film has composition and properties showing in Tables 1-4, respectively.
  • the film a thickness of 27 ⁇ m and A/B/C/D structure and composition as in Example I repeated with following changes: (A) outer layer have a thickness of
  • 5 ⁇ m film prepared has properties showing in Tables I and 2.
  • the film a thickness of 27 ⁇ m and A/B/C/D structure and composition as in
  • Example 1 repeated with following changes: (A) outer layer have a thickness of
  • 0.5 ⁇ m and (B) core layer have a thickness of 23.5 Ian. After biaxially stretching, setting and corona discharged in the given conditions 0.5 ⁇ m / 23.5 ⁇ m / 1.5 ⁇ m /
  • 1.5 ⁇ m film prepared has properties showing in Tables I and 2.
  • the film a thickness of 31 ⁇ m and A/B/C/D structure and composition as in Example I repeated with following changes: (A) outer layer have a thickness of 0. 5 ⁇ m and (B) core layer have a thickness of 27.2 ⁇ m. After biaxially stretching, setting and corona discharged in the given conditions 0. 8 ⁇ m / 27.2 ⁇ m / 1. 5 ⁇ m / 1. 5 ⁇ m film prepared has properties showing in Tables I and 2.
  • the film a thickness of 31 ⁇ m and A/B/C/D structure and composition as in Example 1 repeated with following changes: (A) outer layer have a thickness of 0.5 ⁇ m and (B) core layer have a thickness of 27.5 ⁇ m. After biaxially stretching, setting and corona discharged in the given conditions 0.5 ⁇ m / 27.2 ⁇ m / 1.5 ⁇ m / 1.5 ⁇ m film prepared has properties showing in Tables I and 2.
  • the film a thickness of 35 ⁇ m and A/B/C/D structure and composition as in Example I repeated with following changes: (A) outer layer have a thickness of 0.5 ⁇ m and (B) core layer have a thickness of 27.5 ⁇ m. After biaxially stretching, setting and corona discharged in the given conditions 0.5 ⁇ m /27.5 ⁇ m / 1.5 ⁇ m / 1.5 ⁇ m film prepared has properties showing in Tables I and 2.
  • S pecific density is determined in according to ISO 1 1 83 and/or ASTM D- 1 505.
  • Melting Flow Index (WI) is measured in according to ASTM 1238/L at 2300C and load of 21.6 N.
  • Melting point (m.p.) is measured by DSC method, maximum point of the melting curve, at heating rate 1 O'Clmin is corresponded to m. p. value.
  • Vicat softening ⁇ oint is determined in according to ASTM D- 1 525.
  • Izod impact stretgth is measured in according to ISO 180/1 A.
  • Tensile strength and elongation at break are determined in accordmg to ASTM D-882.
  • Adhesion and tear strength of films toward scotch adhesive tape are determined by using LNSTRON Testometer with specimen dimensions 2.5 x 15 cm.
  • Transfer degree of opaque layer from film to said adhesive tape is calculated by using of tear strength data and changes of film weight after testing as a function of outer skin layer's delamination property.
  • Light transmission (haze) of the film is measured in accordance with ASTM D- 1003.
  • Dynamic - friction coefficient of the film is determined in accordance with ASTM D-1984.
  • Sheen of the film is measured in accordance with ASTM D-2103, the angle of incidence is set at 45°.
  • Shrinkage of the film is measured in accordance with ASTM D-1204.
  • the test sample is shrink at 120'C for a period at 15 min.
  • Thickness of outer A layer ( ⁇ m) 1.2 0.8 0.5 0.8
  • Thickness of A-layer ( ⁇ m) 1.2 0.8 0.5 0.8 0.8 0.8 0.8 0.8
  • Titanium dioxide 2.18 1.98 1.82 1.72 1.58 1.52 2.40 1.35 1.20
  • Thickness of outer A layers 1.2 (El), 0.5(E3) and 0.8 ⁇ m (E2 and E4-E6).

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  • Laminated Bodies (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

L'invention concerne des films multicouches en propylène, opaques et nacrés, à orientation biaxiale et possédant des propriétés améliorées; ces films peuvent être utilisés dans des étiquettes en rouleau ainsi qu'avec des confiseries et des produits alimentaires à des fins de surenveloppage, d'impression et de laminage, et ce avec différents substrats, dans des applications à soudure par pression à froid ou à adhésif thermofusible, dans des emballeuses rapides et, de manière générale, dans des applications d'emballage.
PCT/TR1999/000013 1999-03-19 1999-03-19 Films multicouches en propylene opaques et nacres a orientation biaxiale possedant des proprietes ameliorees WO2000056547A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU36348/99A AU772959B2 (en) 1999-03-19 1999-03-19 Biaxially oriented polypropylene multilayer opaque-pearlised films with improved properties
PCT/TR1999/000013 WO2000056547A1 (fr) 1999-03-19 1999-03-19 Films multicouches en propylene opaques et nacres a orientation biaxiale possedant des proprietes ameliorees
TR2001/00853T TR200100853T2 (tr) 1999-03-19 1999-03-19 Gelişmiş özellikteki çift yönlü gerdirilmiş çok katlı opak-pearlize polipropilen filmler.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR1999/000013 WO2000056547A1 (fr) 1999-03-19 1999-03-19 Films multicouches en propylene opaques et nacres a orientation biaxiale possedant des proprietes ameliorees

Publications (1)

Publication Number Publication Date
WO2000056547A1 true WO2000056547A1 (fr) 2000-09-28

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PCT/TR1999/000013 WO2000056547A1 (fr) 1999-03-19 1999-03-19 Films multicouches en propylene opaques et nacres a orientation biaxiale possedant des proprietes ameliorees

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AU (1) AU772959B2 (fr)
TR (1) TR200100853T2 (fr)
WO (1) WO2000056547A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002083414A1 (fr) * 2001-04-18 2002-10-24 Polinas Plastik Sanayi Ve Ticaret A. S. Composition polyolefine pour films opaques multicouche, blancs d'aspect, orientes biaxialement
WO2004113071A1 (fr) * 2003-06-18 2004-12-29 Gunze Limited Film polyamide multicouche
CN104149403A (zh) * 2014-07-14 2014-11-19 湖北富思特材料科技集团有限公司 Bopp亮白涂布膜
WO2020083738A1 (fr) * 2018-10-24 2020-04-30 Sabic Global Technologies B.V. Film de polypropylène bi-orienté destiné au thermoscellage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201799A2 (fr) * 1985-05-11 1986-11-20 Wolff Walsrode Aktiengesellschaft Feuilles multicouches, thermoscellables, opaques à base de polyoléfines
DE4118572A1 (de) * 1991-06-06 1992-12-10 Hoechst Ag Siegelbare weisse folie aus polyolefinen
US5364704A (en) * 1991-10-24 1994-11-15 Hoechst Aktiengesellschaft Nonsealable, matt, hazy, biaxially oriented multilayer polyolefin film, method of producing it, and its use

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201799A2 (fr) * 1985-05-11 1986-11-20 Wolff Walsrode Aktiengesellschaft Feuilles multicouches, thermoscellables, opaques à base de polyoléfines
DE4118572A1 (de) * 1991-06-06 1992-12-10 Hoechst Ag Siegelbare weisse folie aus polyolefinen
US5364704A (en) * 1991-10-24 1994-11-15 Hoechst Aktiengesellschaft Nonsealable, matt, hazy, biaxially oriented multilayer polyolefin film, method of producing it, and its use

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002083414A1 (fr) * 2001-04-18 2002-10-24 Polinas Plastik Sanayi Ve Ticaret A. S. Composition polyolefine pour films opaques multicouche, blancs d'aspect, orientes biaxialement
WO2004113071A1 (fr) * 2003-06-18 2004-12-29 Gunze Limited Film polyamide multicouche
CN104149403A (zh) * 2014-07-14 2014-11-19 湖北富思特材料科技集团有限公司 Bopp亮白涂布膜
WO2020083738A1 (fr) * 2018-10-24 2020-04-30 Sabic Global Technologies B.V. Film de polypropylène bi-orienté destiné au thermoscellage

Also Published As

Publication number Publication date
AU772959B2 (en) 2004-05-13
TR200100853T2 (tr) 2001-10-22
AU3634899A (en) 2000-10-09

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