US3145242A - Flame treatment of polymeric film and apparatus - Google Patents

Flame treatment of polymeric film and apparatus Download PDF

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Publication number
US3145242A
US3145242A US225639A US22563962A US3145242A US 3145242 A US3145242 A US 3145242A US 225639 A US225639 A US 225639A US 22563962 A US22563962 A US 22563962A US 3145242 A US3145242 A US 3145242A
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US
United States
Prior art keywords
film
flame
edge
burner
travel
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.)
Expired - Lifetime
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US225639A
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English (en)
Inventor
Bryan William Locke
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EIDP Inc
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EI Du Pont de Nemours and Co
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Publication date
Priority to BE637742D priority Critical patent/BE637742A/xx
Priority to NL298313D priority patent/NL298313A/xx
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US225639A priority patent/US3145242A/en
Priority to GB37582/62A priority patent/GB1012923A/en
Priority to LU44430D priority patent/LU44430A1/xx
Priority to FR948398A priority patent/FR1369833A/fr
Priority to DE19631504695 priority patent/DE1504695A1/de
Application granted granted Critical
Publication of US3145242A publication Critical patent/US3145242A/en
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/08—Surface shaping of articles, e.g. embossing; Apparatus therefor by flame treatment ; using hot gases

Definitions

  • This invention relates to the treatment of plastic surfaces and more particularly to improvements in the process and apparatus for flame treating the surface of continuous webs of organic polymeric films to modify the surface characteristics thereof.
  • a further object is to provide an apparatus for carrying out the above method.
  • the present invention comprises, in a process and apparatus for flame treating a polymeric film wherein continuous organic polymeric film is brought continuously into intimate contact with a relatively highly thermally conductive surface and while in contact therewith passes through the flame of an elongated burner spaced from and disposed parallel to said film and transversely of the direction of travel thereof, whereby to heat the surface of said film exposed to said flame to an elevated temperature, said thermally conductive surface opposite said flame being maintained at a temperature substantially below said elevated temperature; the improvement which comprises the step of, and adjustable means for, directing a narrow stream of substantially inert gas through the gap between said film and said burner in the vicinity of each edge of said film and in a direction substantially paralleling the direction of travel thereof through said flame, whereby to cool said film in the vicinity of the edges thereof.
  • Any gas may be used for the jets provided it is substantially inert.
  • gases which do not comprise combustibles for example, fuel components such as hydrocarbons, hydrogen, carbon monoxide
  • gases which of themselves will not tend to cause local increases in the burning velocity of the flame as would pure oxygen
  • gases found useful may be mentioned air, nitrogen, helium and carbon dioxide.
  • Gases generally considered unsuitable for this purpose either for safety or economic reasons include hydrogen, carbon monoxide, oxygen and gaseous paraflinic and olefinic hydrocarbons.
  • FIG. 1 is a schematic illustration of an arrangement of apparatus suitable for carrying out the process of this invention.
  • FIG. 2 is a schematic illustration, partly in section, showing in detail a preferred film edge-sensing and following apparatus.
  • Idling rubber-covered nipping roll 5 serves to minimize wrinkling and press out entrapped air which substantially improves the uniformity of contact of the film with back-up roll 6 as it passes burner 7.
  • After the treated film leaves back-up roll 6 it passes under metal idler roll 8, over driven metal tension isolation roll 9 and finally under metal idler roll 10 to driven wind-up roll 11.
  • Burners varying widely in design can be and are commonly employed in flame treating a wide variety of polymeric films and sheeting.
  • Elongated burners whose discharge openings permit the establishing and maintaining of a substantially uniform flame front are preferred. Included among such burners are those whose discharge openings consist of one or more longitudinally disposed rectangular orifices defined preferably by adjustable lips and those whose discharge openings consist of multiple longitudinally disposed rows of holes the size and relative spacing of which is selected to contribute to flame front uniformity.
  • Flame fronts measuring (in the direction of film travel) from less than flt-inch up to several inches at film-to-burner distances ranging from less than /s-inch up to nearly an inch are commonly employed in carrying out the flame treatments in conjunction with which the invention herein described may be used.
  • Jet delivery nozzle-positioning cylinder 12 (filled with hydraulic fluid) is suspended from traversing bar 13 by means of carriage 19, provided with a pair of cylindrical wheels 20 which roll in a rectangular slot (not shown) milled into the upper quadrant of traversing bar 13 which extends transversely across the entire width of back-up roll 6.
  • Locking screw 21 permits the lateral position of carriage 19 on bar 13 to be fixed.
  • Jet delivery nozzle 14 is supported by arm 22 which in turn is secured to and supported by one end of the center rod of hydraulically positionable piston 23.
  • a pneumatic pressure signal from the upper jaw of edge-sensing nozzle 15 passes through signal line 16 to controller 17, a pneumatic-hydraulic transducer of conventional design.
  • the controller acts (through a pair of hydraulic lines 18) to establish a differential hydraulic pressure across the piston in cylinder 12 of such magnitude and direction that the piston (and thereby edgesensing nozzle 15) is moved to a position which restores the pneumatic signal to its preset value,
  • the position of jet delivery nozzle 14 relative to the edge of the film remains substantially unchanged although the edge of the film may wander laterally over a considerable distance as it passes through the flame treating apparatus.
  • Two such assemblies are needed for continuously and automatically positioning a jet delivery nozzle relative to each edge of the traveling film.
  • the amplitude of the pneumatic pressure signal transmitted via signal line 16 to controller 17 would decrease, causing the controller to act to increase the hydraulic pressure in line 18a and proportionately to decrease the hydraulic pressure in line 18b.
  • controller 17 a pneumatic-hydraulic transducer of conventional design
  • This will create an hydraulic pressure differential across piston 23 in cylinder 12 which will move piston 23 to the right until edge-sensing nozzle 15 has resumed its pre-set position relative to the edge of the film and the amplitude of the pneumatic pressure signal has been restored to the pre-set evel.
  • edge-sensing nozzle 15 Conversely, if the film passing through edge-sensing nozzle 15 should move to the left, the amplitude of the pneumatic signal transmitted via signal line 16 would increase, causing controller 17 to act to decrease the hydraulic pressure in line 18a and to increase the hydraulic pressure in line 18b, establishing in cylinder 12 an hydraulic pressure differential across piston 23 of opposite direction to that hereinabove described. This pressure differential would move piston 23 to the left until the edge-sensing nozzle 15 had resumed its pre-set position relative to the edge of the film and the amplitude of the pneumatic pressure signal had been restored to the pre-set level.
  • the apparatus has been shown as sensing the positions of the edges of the film prior to its passage across the flame front of the burner, it will be understood that the edge-sensing may take place after the film has left the treating back-up roll.
  • the positions of the edges of the film should be sensed a relatively short film-travel distance away from the film-to-burner
  • the invention may be carried out without the use of the preferred edge-sensing and following nozzle assembly.
  • the jet delivery nozzles may be suspended from a slotted traversing bar by means of appropriately keyed bushings, the lateral positions of the bushings being manually variable through the action of hand-cranked worm gears.
  • burner 7 is shown in the position relative to treating back-up roll 6 which is preferred from the standpoint of minimizing thermally caused distortion of the burner.
  • Delivery nozzles 14 are shown positioned below the burner and aimed upward to direct their gaseous jets through the aperture between film and burner in a direction substantially paralleling the direction of film travel through the treating apparatus. Although the delivery nozzles could be positioned above the burner, aimng downward, the former positioning is preferred since it greatly reduces the heat flux from the burner to the nozzles and thus minimizes the risk that thermal distortion of either nozzle might misdirect the gaseous jet therefrom.
  • the burner may alternatively be positioned above the treating back-up roll directing its flame downward or below the treating back-up roll directing its flame upward. In either of these alternative apparatus arrangements, delivery nozzles 14 will be positioned to direct their gaseous jets in a substantially horizontal direction either in the direction of film travel or counter thereto.
  • jet delivery nozzles employed in carrying out the process of this invention need not be of elaborate design.
  • successfully employed jet delivery nozzles have been fabricated from 'short lengths of copper tubing ranging in OD. (outside diameter) from fii-inch down to -inch.
  • the deformability of copper tubing permits the cross sectional shape of the gaseous jet to be controlled to some extent by pinching or otherwise shaping the copper tubing. 7
  • the tips of these nozzles may be and are often skewed a few degrees from being absolutely parallel to the direction of film travel so that they direct their jets slightly away from the center line of the traveling film. This reduces the chance that the expanding gaseous jets will distort or extinguish a portion of the flame front overlapping the edge of the film and thus prevent the proper treatment of the film in these regions. For this reason the skewing of the jet delivery nozzles in this manner is preferred when carrying out the process of this invention.
  • the jet velocities necessary to accomplish the amount of edge cooling required to prevent curling, beading, or other distortion attributable to local overheating will normally be determined by trial and error by a skilled operator inasmuch as they depend at least in part on the thickness and nature of the film being treated, its speed through the treating apparatus, the heat quenching capacity of the treating back-up surface in proportion to the heat flux from the flame front, the dimensional stability of the film (particularly if it is biaxially oriented), the width of the flame front measured in the direction of film travel, the film-to-burner distance and both the composition and supply rate of the gaseous mixture with which the burner is fueled.
  • Examples 1 to 4 Biaxially oriented films (1.5 mils thick and 42 inches wide) of (l) polyvinyl fluoride, (2) polyvinyl chloride, (3) isotactic linear polypropylene and (4) high density, linear polyethylene were flame treated in the apparatus shown in FIG. 1, using a 53-inch long burner having a longitudinally disposed rectangular discharge orifice 100- mils wide. The burner was positioned 2.5 millimeters from the film in each case and was supplied with a stoichiometric mixture of air, propane and oxygen at the rate of 15.6 standard cubic feet per minute. A pair of jet delivery nozzles made of 41-inch O.D.
  • Examples 5 to 8 The runs of Examples 1 to 4, including their corresponding controls were repeated using the automatic film edge-sensing and following apparatus shown in FIG. 2, operating to automatically position a pair of jet delivery nozzles fabricated from Vs -inch O.D. copper tubing. Film speed during each control and example run was varied over the same range as before. During each example run, nitrogen was supplied to one and air to the other jet delivery nozzle at rates (for each nozzle) which were purposely varied over the range of 0.05 to 0.5 standard cubic feet per minute. Edge curling, thickening and beading were substantially eliminated even at the lower gas rates within this range.
  • Examples 9 and 10 A biaxially oriented polyvinyl fluoride fihn and a tubu-' lar melt-blown, low density branched polyethylene film (each 42 inches wide and 1.5 mils thick) were flame treated in the apparatus shown in FIG. 1, using a 53-inch long burner the discharge opening of which comprised six longitudinal rows of -inch diameter holes spaced on As-inch centers in an equilateral triangular pattern. The burner was positioned 5.0 millimeters from the film in each case and was supplied with a propane:air mixture in the ratio of 1221.6 at the rate of 12.6 standard cubic feet per minute. The automatic film edge-sensing and following apparatus and Ai-inch O.D. jet delivery nozzlesof Examples 5 to 8 were employed.
  • Film speed during each control and example was varied from 30 to 300 feet per minute.
  • the temperature of the treating back-up roll opposite the burner was maintained in the range of 45- 55 C.
  • no gas was supplied to the jet delivery nozzles and curling, thickening and. beading of the edges of the film (with consequent distortion of wind-up) were noticeable to an objectionable degree.
  • nitrogen was supplied to one and helium to the other jet delivery nozzle at rates (for each nozzle) which were purposely varied over the range of 0.1 to 0.7 standard cubic feet per minute.
  • edge curling, thickening and beading were substantially eliminated even at the lower gas rates within this range.
  • the flame was extinguished over a narrow portion of its length (approximately inch) immediately outboard of each edge of the film.
  • this invention provides an economical and easily operated technique for eliminating film edge distortion caused by overheating during flame treatment. It also makes available a means for providing one or more untreated margins or lanes on the film being treated.
  • the gaseous jets of the invention at hand do not obstruct the flow of gaseous fuel from the burner orifices, there. is no need to adjust either the composition of the fuel mixture or its rate of supply to the burner in order to maintain a stable flame.
  • the use of gaseous jets is readily adapted to cooperating with an automatic film edge-sensing and following apparatus of conventional design, an advantage not attributable to the prior art technique.
  • apparatus for continuously flame treating continuous film of organic polymeric material comprising in combination a relatively highly thermally conductive surface adapted to support continuously travelling continuous film, an elongated burner spaced from said surface and disposed parallel to said surface and transversely of the direction of travel of film thereon said burner being of a length at least that of the maximum width of film travelling over said surface, means for continuously supplying a fuel mixture to said burner whereby to sustain a stable flame directed across said surface and effective to heat film travelling over said surface to an elevated temperature, means to maintain said surface opposite said burner at a temperature substantially below said ele* vated temperature, and means for continuously bringing continuous film into intimate contact with said surface and passing through said flame; the improvement which comprises, in combination, means for directing a narrow stream of substantially inert gas through the gap formed between said burner and said surface, in vicinity of the edge of film passing over said surface, and in a direction substantially paralleling the direction of travel of said film through said flame.
  • apparatus for continuously flame treating continuous film of organic polymeric material comprising in combination a relatively highly thermally conductive surface adapted to support continuously travelling continuous film, an elongated burner spaced from said surface and disposed parallel to said surface and transversely of the direction of travel of film thereon said burner being of a length at least that of the maximum width of film travelling over said surface, means for continuously supplying a fuel mixture to said burner whereby to sustain a stable flame directed across said surface and effective to heat film travelling over said surface to an elevated;
  • the improvement which comprises, in combination, means for directing a narrow stream of substantially inert gas through the gap formed between said burner and said surface, in vicinity of the edge of film passing over said surface, and in a direction substantially paralleling the direction of travel through said flame, and means for maintaining said stream in predetermined position relative to said edge of the travelling film.

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  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
US225639A 1962-09-24 1962-09-24 Flame treatment of polymeric film and apparatus Expired - Lifetime US3145242A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE637742D BE637742A (en(2012)) 1962-09-24
NL298313D NL298313A (en(2012)) 1962-09-24
US225639A US3145242A (en) 1962-09-24 1962-09-24 Flame treatment of polymeric film and apparatus
GB37582/62A GB1012923A (en) 1962-09-24 1962-10-04 Process and apparatus for the surface treatment of polymeric film
LU44430D LU44430A1 (en(2012)) 1962-09-24 1963-09-12
FR948398A FR1369833A (fr) 1962-09-24 1963-09-23 Perfectionnements aux procédés de traitement à la flamme de la surface de pellicules en matières polymères, par exemple en chlorure de polyvinyle ou en polyoléfines comme le polyéthylène et le polypropylène
DE19631504695 DE1504695A1 (de) 1962-09-24 1963-09-24 Verfahren und Vorrichtung zur Flammbehandlung einer Polymerfolie

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US225639A US3145242A (en) 1962-09-24 1962-09-24 Flame treatment of polymeric film and apparatus

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BE (1) BE637742A (en(2012))
DE (1) DE1504695A1 (en(2012))
GB (1) GB1012923A (en(2012))
LU (1) LU44430A1 (en(2012))
NL (1) NL298313A (en(2012))

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477119A (en) * 1964-11-23 1969-11-11 Bunker Ramo Method and apparatus for forming an electric bond between two metallic members
US4617468A (en) * 1983-02-24 1986-10-14 Fuji Photo Film Co., Ltd. Stimulable phosphor sheet with hydrophilic surface
US4631155A (en) * 1985-02-01 1986-12-23 American Hoechst Corporation Process for manufacture of surface-modified oriented polymeric film
US4810434A (en) * 1985-02-01 1989-03-07 American Hoechst Corporation Process for manufacture of surface-modified oriented polymeric film
US4822451A (en) * 1988-04-27 1989-04-18 Minnesota Mining And Manufacturing Company Process for the surface modification of semicrystalline polymers
US4868006A (en) * 1987-03-16 1989-09-19 Minnesota Mining And Manufacturing Company Polymeric film with reduced surface friction
US4879176A (en) * 1987-03-16 1989-11-07 Minnesota Mining And Manufacturing Company Surface modification of semicrystalline polymers
US4902378A (en) * 1988-04-27 1990-02-20 Minnesota Mining And Manufacturing Company Polymer with reduced internal migration
US5028292A (en) * 1987-03-16 1991-07-02 Minnesota Mining And Manufacturing Company Adhesive bonding to quasi-amorphous polymer surfaces
US5032209A (en) * 1987-03-16 1991-07-16 Minnesota Mining And Manufacturing Company Heat sealing of semicrystalline quasi-amorphous polymers
US5059114A (en) * 1988-12-09 1991-10-22 Automated Packaging Systems, Inc. Heating apparatus and method
US5914079A (en) * 1995-03-14 1999-06-22 Hoechst Aktiengesellschaft Process for the treatment of a sealable film surface
US6632384B2 (en) * 2000-03-29 2003-10-14 Sumitomo Chemical Company, Limited Process for producing resin molded article
US6753088B1 (en) * 1998-05-06 2004-06-22 Corus Technology Bv Locally providing a coated article with a sealing material
US20060086379A1 (en) * 2004-10-26 2006-04-27 Maytag Corporation Flame treatment of washing machine parts
US20060125139A1 (en) * 2002-10-09 2006-06-15 3M Innovative Properties Company Methods for flame-perforating films
US20070096356A1 (en) * 2003-10-06 2007-05-03 3M Innovative Properties Company Methods and apparatus for oxygen enriched flame-perforation of a polymer film
CN117445380A (zh) * 2023-12-22 2024-01-26 余姚泰速自动化科技有限公司 一种汽车腰线和扶手的火焰处理工装

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19601943C2 (de) * 1996-01-11 1998-10-22 Fraunhofer Ges Forschung Verfahren zur Oberflächenaktivierung von perfluorierten Polymeren

Citations (15)

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Publication number Priority date Publication date Assignee Title
US2648097A (en) * 1952-04-04 1953-08-11 Traver Corp Method of securing decorative matter to a surface of a polyethylene body
US2683894A (en) * 1951-06-27 1954-07-20 Traver Corp Apparatus for treating plastic film
US2746084A (en) * 1949-01-18 1956-05-22 Traver Investments Inc Apparatus for treating polyethylene bodies
US2795820A (en) * 1954-11-02 1957-06-18 Celanese Corp Treatment of polyethylene
US2890483A (en) * 1955-07-01 1959-06-16 Owens Illinois Glass Co Machine for forming plastic containers
GB827195A (en) * 1956-05-28 1960-02-03 Plax Corp Improvements in or relating to method and apparatus for modifying the surfaces of polyethylene films
US2943349A (en) * 1959-03-26 1960-07-05 Owens Illinois Glass Co Apparatus for trimming excess plastic from blown plastic articles
US2953814A (en) * 1957-07-18 1960-09-27 Owens Illinois Glass Co Method and apparatus for forming and trimming articles from plastic sheets
US2975473A (en) * 1953-06-17 1961-03-21 Hagen Reinold Manufacture of hollow plastic articles
US2978745A (en) * 1956-12-07 1961-04-11 Battenfeld Geb Process and a machine for the production of hollow bodies
US2988776A (en) * 1959-07-27 1961-06-20 Owens Illinois Glass Co Method and apparatus for trimming blown hollow plastic articles
US2994103A (en) * 1960-05-26 1961-08-01 Owens Illinois Glass Co Method and apparatus for trimming blown plastic articles
US3003187A (en) * 1958-10-16 1961-10-10 Owens Illinois Glass Co Method and apparatus for forming and trimming hollow plastic articles
US3009198A (en) * 1959-01-12 1961-11-21 Metal Box Co Ltd Apparatus for making and trimming hollow plastic articles
US3145243A (en) * 1960-09-12 1964-08-18 Hagen Reinold Manufacture of hollow plastic articles

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746084A (en) * 1949-01-18 1956-05-22 Traver Investments Inc Apparatus for treating polyethylene bodies
US2683894A (en) * 1951-06-27 1954-07-20 Traver Corp Apparatus for treating plastic film
US2648097A (en) * 1952-04-04 1953-08-11 Traver Corp Method of securing decorative matter to a surface of a polyethylene body
US2975473A (en) * 1953-06-17 1961-03-21 Hagen Reinold Manufacture of hollow plastic articles
US2795820A (en) * 1954-11-02 1957-06-18 Celanese Corp Treatment of polyethylene
US2890483A (en) * 1955-07-01 1959-06-16 Owens Illinois Glass Co Machine for forming plastic containers
GB827195A (en) * 1956-05-28 1960-02-03 Plax Corp Improvements in or relating to method and apparatus for modifying the surfaces of polyethylene films
US2978745A (en) * 1956-12-07 1961-04-11 Battenfeld Geb Process and a machine for the production of hollow bodies
US2953814A (en) * 1957-07-18 1960-09-27 Owens Illinois Glass Co Method and apparatus for forming and trimming articles from plastic sheets
US3003187A (en) * 1958-10-16 1961-10-10 Owens Illinois Glass Co Method and apparatus for forming and trimming hollow plastic articles
US3009198A (en) * 1959-01-12 1961-11-21 Metal Box Co Ltd Apparatus for making and trimming hollow plastic articles
US2943349A (en) * 1959-03-26 1960-07-05 Owens Illinois Glass Co Apparatus for trimming excess plastic from blown plastic articles
US2988776A (en) * 1959-07-27 1961-06-20 Owens Illinois Glass Co Method and apparatus for trimming blown hollow plastic articles
US2994103A (en) * 1960-05-26 1961-08-01 Owens Illinois Glass Co Method and apparatus for trimming blown plastic articles
US3145243A (en) * 1960-09-12 1964-08-18 Hagen Reinold Manufacture of hollow plastic articles

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477119A (en) * 1964-11-23 1969-11-11 Bunker Ramo Method and apparatus for forming an electric bond between two metallic members
US4617468A (en) * 1983-02-24 1986-10-14 Fuji Photo Film Co., Ltd. Stimulable phosphor sheet with hydrophilic surface
US4631155A (en) * 1985-02-01 1986-12-23 American Hoechst Corporation Process for manufacture of surface-modified oriented polymeric film
US4810434A (en) * 1985-02-01 1989-03-07 American Hoechst Corporation Process for manufacture of surface-modified oriented polymeric film
US4868006A (en) * 1987-03-16 1989-09-19 Minnesota Mining And Manufacturing Company Polymeric film with reduced surface friction
US4879176A (en) * 1987-03-16 1989-11-07 Minnesota Mining And Manufacturing Company Surface modification of semicrystalline polymers
US5028292A (en) * 1987-03-16 1991-07-02 Minnesota Mining And Manufacturing Company Adhesive bonding to quasi-amorphous polymer surfaces
US5032209A (en) * 1987-03-16 1991-07-16 Minnesota Mining And Manufacturing Company Heat sealing of semicrystalline quasi-amorphous polymers
US4822451A (en) * 1988-04-27 1989-04-18 Minnesota Mining And Manufacturing Company Process for the surface modification of semicrystalline polymers
US4902378A (en) * 1988-04-27 1990-02-20 Minnesota Mining And Manufacturing Company Polymer with reduced internal migration
US5059114A (en) * 1988-12-09 1991-10-22 Automated Packaging Systems, Inc. Heating apparatus and method
US5914079A (en) * 1995-03-14 1999-06-22 Hoechst Aktiengesellschaft Process for the treatment of a sealable film surface
US6753088B1 (en) * 1998-05-06 2004-06-22 Corus Technology Bv Locally providing a coated article with a sealing material
US6632384B2 (en) * 2000-03-29 2003-10-14 Sumitomo Chemical Company, Limited Process for producing resin molded article
US20060125139A1 (en) * 2002-10-09 2006-06-15 3M Innovative Properties Company Methods for flame-perforating films
EP1854597A3 (en) * 2002-10-09 2009-03-11 3M Innovative Properties Company Method for flame-perforating a film
US7686996B2 (en) 2002-10-09 2010-03-30 3M Innovative Properties Company Methods for flame-perforating films
US20100140826A1 (en) * 2002-10-09 2010-06-10 3M Innovative Properties Company Apparatus and method for flame-perforating films
US7980849B2 (en) 2002-10-09 2011-07-19 3M Innovative Properties Company Apparatus and method for flame-perforating films
US20070096356A1 (en) * 2003-10-06 2007-05-03 3M Innovative Properties Company Methods and apparatus for oxygen enriched flame-perforation of a polymer film
US7622064B2 (en) 2003-10-06 2009-11-24 3M Innovative Properties Company Methods and apparatus for oxygen enriched flame-perforation of a polymer film
US20060086379A1 (en) * 2004-10-26 2006-04-27 Maytag Corporation Flame treatment of washing machine parts
CN117445380A (zh) * 2023-12-22 2024-01-26 余姚泰速自动化科技有限公司 一种汽车腰线和扶手的火焰处理工装

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BE637742A (en(2012))
DE1504695A1 (de) 1969-09-18
LU44430A1 (en(2012)) 1964-03-12
GB1012923A (en) 1965-12-08
NL298313A (en(2012))

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