US3751281A - Method for preparing a dimensionally stable waxed polyethylene sheet - Google Patents
Method for preparing a dimensionally stable waxed polyethylene sheet Download PDFInfo
- Publication number
- US3751281A US3751281A US3751281DA US3751281A US 3751281 A US3751281 A US 3751281A US 3751281D A US3751281D A US 3751281DA US 3751281 A US3751281 A US 3751281A
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- US
- United States
- Prior art keywords
- film
- polyethylene
- wax
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- web
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/048—Forming gas barrier coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
Definitions
- ABSTRACT This invention relates to a method for applying a wax coating to one or both sides of a polyethylene-based film which eliminates a hitherto troublesome problem of dimensional instability of the overwaxed film. More specifically, this invention provides a method for producing a waxed polyethylene film having a degree of dimensional stability heretofore not achieved.
- the waxed sheet When prepared in accordance with the process of this invention, the waxed sheet is dimensionally stable within the limit of i2 percent even after extended periods of storage and exhibits very desirable protective properties as a packaging film.
- the basic polyethylene film which is to be overcoated with a petroleum wax is first subjected to a surface treatment of the oxidative type which so modifies the surface layer of the film that it is more readily wet by the molten wax, which then spreads more evenly on the film surface to form a smooth overall coating of uniform thickness.
- Any of the conventional polyolefin surface treatments may be utilized, including corona discharge, flame treatment or an oxidative chemical treatment, all being carried out in known manner and not being a part of the present invention.
- the protective properties of the overwaxed film are, in large measure, dependent on an even distribution of the wax composition coating over the surface of the polymer film, which is generally enhanced by the surface treatment of the base film.
- the moisture vapor transmission rate of a 1.5 mil (1 mil 0.001 inch) high density polyethylene film is in the range of 5 -l0 gm. per square meter per 24 hours. If this film is corona discharge treated and overwaxed with 4 lb. per ream (3,000 sq. ft.) of a F.
- the moisture vapor transmission rate is reduced to between 0.5 and L0 gm/M /24 hrs., whereas a similar film overwaxed without prior corona discharge treatment will have a MVTR of between 2 and 4 gm/Ml24 hrs.
- the data herein presented are all based on films which have been subjected to an oxidative surface treatment prior to the overwaxing operation.
- the stretching and waxing operation is carried out on apparatus such as that shown schematically in the accompanying drawingwherein a web of polyethylene 10 is unwound from stock roll 11, led over idler rolls 12 and through a nip formed between a back-up roll 16 and an application roll 17, which latter roll is rotatably mounted with the lower portion of the roll dipping in a bath of molten wax 20 maintained at the desired waxing temperature in a wax pan 21.
- the applicator roll preferably has an etched, engraved or knurled surface which carries sufficient molten wax from the pan 21 up into contact with the web 10 to maintain a flooded nip where the sheet passes between the two rolls l6 and 17.
- the rolls l6 and 17 may be so arranged that the web 10 dips in the wax bath so that both sides of the web receive a coating of the wax composition.
- the coated side (or coated sides) of the sheet may be passed over a heated metering rod or roll 22, suitably a conventional wire-wound rod or other comparable device to remove any-excess of wax and to smooth the wax film to a coating of even thickness on the web surface. If both sides of the sheet are coated, each side will be subjected to a metering operation, of course.
- the coated sheet after passing idler roll 23 is then successively passed into contact with a tempering drum 2S maintained at a few degrees below the melting point of the wax, and then to the surface of cooling drums 27 and 28 which complete the solidification and hardening of the wax coating and f1- nally, after passage over idler roller 30, the wax coated sheet is wound into roll form on a wind-up roll 32.
- the applicator and backup rolls 17 and 16 are provided with a first variable speed driving means, not shown, and the tempering drum 25, the cooling drums 27 and 28 and wind-up roll 32 are provided with a second variable speed driving means.
- the tempering and cooling drums and the wind-up roll may be run, as desired, at variably higher speeds than the applicator and back-up roll, thus imparting a preselected degree of stretch to the waxed film in the critical area between the waxapplying nip and the tempering and cooling drums.
- the film will attain a temperature above the melting point of the wax in the wax pan and it is important to the dimensional stability of the final, wax-coated film that the desired degree of stretch is applied to the film while it is heated in a temperature range between the wax melting point (usually at least 130 F.) and a maximum temperature which approaches the softening point of the polyethylene.
- the softening temperature of polyethylene varies depending on the molecular weight and density of the film, low density polyethylene generally softening in the vicinity of about 220-230 F. while the softening point of high density polyethylene may range as high as 260 F. or slightly above.
- the temperature of the waxing bath, the applicator roll, back-up roll and the metering roll be controlled to, first, raise the temperature of the film into the-desired temperature range and then to maintain it within this range during the waxing and stretching operations.
- the heatedfmolten wax provides sufficient heat to achieve the abovedescribed desired result, but it is to be understood that the film may be partially preheated before its delivery to the waxing nip as, for example, by utilizing one or more of the idler rolls 12 as a preheating roll for the film.
- wax coating required will depend on the particular protective requirements of the specific packaging situation and will also vary somewhat depending on the type and caliper of the polyethylene base film and on the particular wax composition utilized. It is to be understood that a wide variety of wax compositions based primarily on petroleum wax may be utilized. Both paraffin wax and microcrystalline petroleum wax may be used, as well as blends of either or both of these materials with such other known wax composition components as polyolefins, ethylene-vinyl acetate co-polymers, natural and synthetic resins and the like.
- Typical wax compositions suitable for the present invention would include paraffin wax containing from 1 percent to 50 percent ofethylene vinyl acetate co-polymer, blends of paraffin wax with minor percentages of microcrystalline wax and/or polyethylene, polyisobutylene, rosin, natural and synthetic rubber, hydrogenated rosin esters and the like.
- paraffin wax containing from 1 percent to 50 percent ofethylene vinyl acetate co-polymer, blends of paraffin wax with minor percentages of microcrystalline wax and/or polyethylene, polyisobutylene, rosin, natural and synthetic rubber, hydrogenated rosin esters and the like.
- Generally, between 1 lb. of wax composition and about 10 lbs. of wax composition per ream (3,000 sq. ft.) of polyethylene applied to either one or both surfaces of the web is quite adequate to provide the degree of protection desired in the packaging film. Greater amounts of the coating could be applied but are less economical and lesser amounts are generally ineffective.
- a preferred range of coating weight is from 3 to 6 lbs.
- the following table presents data comparing the water vapor transmission rate of an unwaxed high density polyehtylene film (1.5 mil in caliper) made from Chemplex 6,108 polyethylene resin with the MVTR of a similar film overwaxed with 4.8 lbs/ream of l35l40 F. melting point paraffin and with a similar waxed film which had been stretched to the extent of 12 percent during the waxing operation in accord with the process of this invention as hereinbefore described.
- Moisture vapor transmission rate was determined on all samples according to the procedure setforth in TAPPl standard method number T-464-m-45.
- the waxed films were conditioned for eight hours at 120 F. prior to conducting the MVTR tests. Values of MVTR are reported in grams per square meter per 24 hours.
- HDPE high density polyethylene
- LDPE low density polyethylene
- PP polypropylene
- Sample C is high density polyethylene film obtainable from Allied Chemical Corporation, Plastic Film Department, Chicago, Ill.
- Sample D is a blown high density polyethylene film prepared from pelletized resin designated Chemplex 6,108 and obtainable from Chemplex, Rolling Meadows, lll.
- Samples E and F are high density cast polyethylene films prepared from pelletized resins designated by the numbers 7,140 and 7,150, respectively, which are available from E. I. duPont de Nemours & Co., Electrochemicals Department, Chicago, 111.
- Sample G a cast high density polyethylene film, was prepared from pelletized resin designated Amoco 650- 134, which is obtainable from Amoco Chemical Corporation, Chicago, 111.
- Sample H a cast low density polyethylene film, was prepared from pelletized low density polyethylene, designated as USL, N.A. 222, obtained from U. S. Industrial Chemicals Company, Oak Brook, 111.
- Sample A is a high density polyethylene film designated as Philjo 606W.
- Sample B is a high density po nated as Philjo 670W.
- Sample 1 is a polypropylene fil 410.
- Samples A, B an Joanna, Division of Ladd, Illinois.
- lyethylene film desigm designated as Philjo d l are obtainable from Phillips Joanna Western Mill Company of ures on the percentage elongation of the waxed film at the end of the test period being 8 percent, 8.5 percent and 9.6 percent, respectively.
- the degree to which a given polyethylene film must be stretched during the waxing operation in order to achieve the maximum degree of dimensional stability during storage and use of the waxed film is dependent on a number of factors, including the type and degree of crystallinity of the film, the temperature which the film attains during the waxing and stretching operation and the length of time of exposure of the film to the molten wax before the waxed film is cooled sufficiently to solidify the wax.
- the film is heated to a temperature above 130 F., in which case the degree of stretch which must be imparted to the film during waxing to achieve satisfactory dimensional stability will seldom exceed 15 percent, and may even be as little as 6-8 percent, as will be discussed hereinafter.
- Variation of the temperature to which the film is heated between the limits of 130 F. and about 210 F. has a relatively small effect on the amount of stretching required for dimensional stability of the waxed film. It has been found, however, that the length of time of contact of molten wax with the film during the waxing and stretching operations has a profound effect on the degree of stretch which must be imparted to the polyethylene film to achieve optimum results.
- the waxed web need be stretched only by between percent and 9 percent while the wax is molten in order to achieve optimum dimensional stability, so that the voverwaxed sheet will change its dimensions by less than 2 percent even under extended storage under summer warehousing conditions.
- the time required for the flooding of the polyolefin web with molten wax, the metering off of excess wax, the stretching of the waxed film and finally the chilling of the molten wax into the solid state may be only a fraction of a second. Under these conditions, it has been found that the polyolefin web must be stretched as much as to 18 percent during the waxing operation in order to achieve a dimensional stability of the product within the desired ranges.
- melting point include maintaining the wax bath temperature at 215-220 F., flooding the web with wax at 400-450 feet per minute, metering off the excess wax with a conventional wire wound rod to leave 4.5 lbs. of wax on the web, and stretching the web during the waxing operation as hereinbefore described by the amount of 12-15 percent.
- the resulting sheet has excellent dimensional stability and very low water vapor permeability. It is a superior sheet for use as a cereal inner wrap.
- a method for obtaining a substantially dimensionally stable, waxed polyethylene sheet which comprises:
- a method for obtaining a dimensionally stable wax-coated polyethylene web suitable for use in highspeed packaging operations which comprises applying a molten petroleum wax composition to at least one surface of a polyethylene web having a thickness of between 0.0005 in. and 0.005 in., maintaining said wax coating in a molten state and said polyethylene web at a temperature between about 130 F. and the softening temperature of the polyethylene while mechanically stretching said coated polyethylene web in a machine direction by an amount between about 5 percent and 20 percent, and subsequently chilling said coated and stretched web to complete solidification of said wax composition coating.
Abstract
Description
Claims (6)
- 2. A method according to claim 1 wherein said contacting, metering, stretching and cooling steps are carried out at a speed between 200 and 500 feet per minute and said stretching is carried out to the extent of between 10 and 18 percent of the original film length.
- 3. A method according to claim 2 wherein the weight of said wax composition after said metering step is between 3 and 6 lbs. per ream.
- 4. A method according to claim 3 wherein said polyethylene film is between 0.001 in. and 0.0025 in. in thickness.
- 5. A method according to claim 4 wherein said polyethylene film has a surface which is treated to be receptive to fluid coatings.
- 6. A method for obtaining a dimensionally stable wax-coated polyethylene web suitable for use in high-speed packaging operations which comprises applying a molten petroleum wax composition to at least one surface of a polyethylene web having a thickness of between 0.0005 in. and 0.005 in., maintaining said wax coating in a molten state and said polyethylene web at a temperature between about 130* F. and the softening temperature of the polyethylene while mechanically stretching said coated polyethylene web in a machine direction by an amount between about 5 percent and 20 percent, and subsequently chilling said coated and stretched web to complete solidification of said wax composition coating.
- 7. A method according to claim 6 wherein said wax composition is applied to a surface treated polyethylene web traveling at between about 200 and 500 feet per minute, said coated polyethylene web being stretched by an amount between 12 percent and 15 percent.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22719272A | 1972-02-17 | 1972-02-17 |
Publications (1)
Publication Number | Publication Date |
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US3751281A true US3751281A (en) | 1973-08-07 |
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US3751281D Expired - Lifetime US3751281A (en) | 1972-02-17 | 1972-02-17 | Method for preparing a dimensionally stable waxed polyethylene sheet |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4086317A (en) * | 1974-04-08 | 1978-04-25 | Oji Yuka Goseishi Kabushiki Kaisha | Process for production of a synthetic paper improved against dusting trouble |
US4172910A (en) * | 1978-03-28 | 1979-10-30 | Asten Group, Inc. | Coating of papermaking fabrics |
US4238533A (en) * | 1976-04-16 | 1980-12-09 | La Cellophane | Coating process and apparatus |
US4275097A (en) * | 1978-03-29 | 1981-06-23 | Coors Container Company | Protective coating for cans and methods for application of coating thereto |
US4897235A (en) * | 1985-12-21 | 1990-01-30 | Wolff Walsrode Aktiengesellschaft | Process for imparting a surface coating to films |
US5155160A (en) * | 1988-05-02 | 1992-10-13 | James River Ii, Inc. | Polyolefin films having improved barrier properties |
US5709747A (en) * | 1994-04-25 | 1998-01-20 | Avgol Nonwoven Industries | Coating selective zones of thin webs to change the pervious character thereof, using a cover |
US20050120842A1 (en) * | 2003-12-05 | 2005-06-09 | Fuji Photo Film Co., Ltd. | Cutting method of fabric material |
US20050137342A1 (en) * | 2003-12-19 | 2005-06-23 | Krishnaswamy Rajendra K. | Polyethylene blend films |
US20060244185A1 (en) * | 2005-04-29 | 2006-11-02 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
US20060244184A1 (en) * | 2005-04-29 | 2006-11-02 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
US20090273115A1 (en) * | 2006-03-30 | 2009-11-05 | Makoto Morikawa | Method of producing film |
Citations (8)
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US2321635A (en) * | 1940-11-26 | 1943-06-15 | Du Pont | Treatment of polyamide films |
US2627088A (en) * | 1950-03-22 | 1953-02-03 | Du Pont | Preparation of oriented coated films |
US2880057A (en) * | 1958-01-22 | 1959-03-31 | Du Pont | Treatment of filaments to improve strength in tension |
US3068516A (en) * | 1960-06-01 | 1962-12-18 | Union Carbide Corp | Extruded contour coating |
US3140957A (en) * | 1960-02-23 | 1964-07-14 | Kurashiki Rayon Co | Heat treatment of fibers |
US3504075A (en) * | 1967-10-26 | 1970-03-31 | Eastman Kodak Co | Method of manufacturing high-gloss polymeric films |
US3506751A (en) * | 1968-05-03 | 1970-04-14 | Continental Can Co | Method of drawing plastic containers |
US3565985A (en) * | 1969-04-10 | 1971-02-23 | Dow Chemical Co | Method of preparing multilayer plastic articles |
-
1972
- 1972-02-17 US US3751281D patent/US3751281A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US2321635A (en) * | 1940-11-26 | 1943-06-15 | Du Pont | Treatment of polyamide films |
US2627088A (en) * | 1950-03-22 | 1953-02-03 | Du Pont | Preparation of oriented coated films |
US2880057A (en) * | 1958-01-22 | 1959-03-31 | Du Pont | Treatment of filaments to improve strength in tension |
US3140957A (en) * | 1960-02-23 | 1964-07-14 | Kurashiki Rayon Co | Heat treatment of fibers |
US3068516A (en) * | 1960-06-01 | 1962-12-18 | Union Carbide Corp | Extruded contour coating |
US3504075A (en) * | 1967-10-26 | 1970-03-31 | Eastman Kodak Co | Method of manufacturing high-gloss polymeric films |
US3506751A (en) * | 1968-05-03 | 1970-04-14 | Continental Can Co | Method of drawing plastic containers |
US3565985A (en) * | 1969-04-10 | 1971-02-23 | Dow Chemical Co | Method of preparing multilayer plastic articles |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4086317A (en) * | 1974-04-08 | 1978-04-25 | Oji Yuka Goseishi Kabushiki Kaisha | Process for production of a synthetic paper improved against dusting trouble |
US4238533A (en) * | 1976-04-16 | 1980-12-09 | La Cellophane | Coating process and apparatus |
US4172910A (en) * | 1978-03-28 | 1979-10-30 | Asten Group, Inc. | Coating of papermaking fabrics |
US4275097A (en) * | 1978-03-29 | 1981-06-23 | Coors Container Company | Protective coating for cans and methods for application of coating thereto |
US4897235A (en) * | 1985-12-21 | 1990-01-30 | Wolff Walsrode Aktiengesellschaft | Process for imparting a surface coating to films |
US5155160A (en) * | 1988-05-02 | 1992-10-13 | James River Ii, Inc. | Polyolefin films having improved barrier properties |
US5709747A (en) * | 1994-04-25 | 1998-01-20 | Avgol Nonwoven Industries | Coating selective zones of thin webs to change the pervious character thereof, using a cover |
US20050120842A1 (en) * | 2003-12-05 | 2005-06-09 | Fuji Photo Film Co., Ltd. | Cutting method of fabric material |
US7536937B2 (en) * | 2003-12-05 | 2009-05-26 | Fujifilm Corporation | Cutting method of fabric material |
US20050137342A1 (en) * | 2003-12-19 | 2005-06-23 | Krishnaswamy Rajendra K. | Polyethylene blend films |
WO2006118906A2 (en) * | 2005-04-29 | 2006-11-09 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
EP2251372A1 (en) * | 2005-04-29 | 2010-11-17 | The Procter and Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
US20060244184A1 (en) * | 2005-04-29 | 2006-11-02 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
WO2006118909A3 (en) * | 2005-04-29 | 2007-02-08 | Procter & Gamble | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
WO2006118906A3 (en) * | 2005-04-29 | 2007-03-01 | Procter & Gamble | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
US20060244185A1 (en) * | 2005-04-29 | 2006-11-02 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
US9637603B2 (en) * | 2005-04-29 | 2017-05-02 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
WO2006118909A2 (en) * | 2005-04-29 | 2006-11-09 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
US8158849B2 (en) | 2005-04-29 | 2012-04-17 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
CN101166780B (en) * | 2005-04-29 | 2012-06-20 | 宝洁公司 | Polymeric film exhibiting anti-blocking characteristics and process of making |
CN101166491B (en) * | 2005-04-29 | 2012-07-04 | 宝洁公司 | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
US8304599B2 (en) | 2005-04-29 | 2012-11-06 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
US20130030399A1 (en) * | 2005-04-29 | 2013-01-31 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
US9096731B2 (en) * | 2005-04-29 | 2015-08-04 | The Procter & Gamble Company | Polymeric film exhibiting improved anti-blocking characteristics and process of making |
US20150314490A1 (en) * | 2005-04-29 | 2015-11-05 | The Procter & Gamble Company | Polymeric Film Exhibiting Improved Anti-Blocking Characteristics and Process of Making |
US20090273115A1 (en) * | 2006-03-30 | 2009-11-05 | Makoto Morikawa | Method of producing film |
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Owner name: AMERICAN NATIONAL CAN COMPANY, STATELESS Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354 Effective date: 19870430 Owner name: AMERICAN NATIONAL CAN COMPANY Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354 Effective date: 19870430 Owner name: AMERICAN CAN PACKAGING INC., CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338 Effective date: 19861107 Owner name: AMERICAN CAN PACKAGING INC., AMERICAN LANE, GREENW Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338 Effective date: 19861107 |