US3061886A - Method for producing a form-retaining roll of extensible tape - Google Patents

Method for producing a form-retaining roll of extensible tape Download PDF

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Publication number
US3061886A
US3061886A US49360A US4936060A US3061886A US 3061886 A US3061886 A US 3061886A US 49360 A US49360 A US 49360A US 4936060 A US4936060 A US 4936060A US 3061886 A US3061886 A US 3061886A
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United States
Prior art keywords
tape
roll
temperature
tension
winding
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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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US49360A
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English (en)
Inventor
Seager Donald William
Perry Alwyn Brooks
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International Business Machines Corp
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International Business Machines Corp
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Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to US49360A priority Critical patent/US3061886A/en
Priority to DE19611479317 priority patent/DE1479317B2/de
Priority to GB25947/61A priority patent/GB913913A/en
Priority to DK314961AA priority patent/DK117252B/da
Priority to ES0269576A priority patent/ES269576A1/es
Priority to CH928361A priority patent/CH394590A/de
Priority to NO141160A priority patent/NO121180B/no
Application granted granted Critical
Publication of US3061886A publication Critical patent/US3061886A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/32—Coiling
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/007—Narrow strips, e.g. ribbons, tapes, bands
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension

Definitions

  • FIG. 1 METHOD FOR PRODUCING A FORM-RETAINING ROLL OF EXTENSIBLE TAPE Filed Aug. 12. 1960
  • FIG. 1 METHOD FOR PRODUCING A FORM-RETAINING ROLL OF EXTENSIBLE TAPE Filed Aug. 12. 1960
  • FIG. 1 METHOD FOR PRODUCING A FORM-RETAINING ROLL OF EXTENSIBLE TAPE Filed Aug. 12. 1960
  • FIG. 1 METHOD FOR PRODUCING A FORM-RETAINING ROLL OF EXTENSIBLE TAPE Filed Aug. 12. 1960
  • FIG. 1 METHOD FOR PRODUCING A FORM-RETAINING ROLL OF EXTENSIBLE TAPE Filed Aug. 12. 1960
  • FIG. 2 PRODUCTION OF WIDE TAPE INTERMEDIATE PRECONDITIONING OF WIDE TAPE INTERMEDIATE T0 INDUCE RELAXATION SIMULTANEOUS WINDING OF RELAXED TAPE INTERMEDIATE UNDER REGULATED TENSION AND AT PRESCRIBED TEMPERATURE
  • FIG. 3 PRODUCTION OF WIDE TAPE INTERMEDIATE PRECONDITIONING OF WIDE TAPE INTERMEDIATE T0 INDUCE RELAXATION SIMULTANEOUS WINDING OF RELAXED TAPE INTERMEDIATE UNDER REGULATED TENSION AND AT PRESCRIBED TEMPERATURE
  • FIG. 3 PRODUCTION OF WIDE TAPE INTERMEDIATE PRECONDITIONING OF WIDE TAPE INTERMEDIATE T0 INDUCE RELAXATION SIMULTANEOUS WINDING OF RELAXED TAPE INTERMEDIATE UNDER REGULATED TENSION AND AT PRESCRIBED TEMPER
  • Such tapes are normally wound in roll form and are paid out from the roll during their intended use.
  • a core member is provided for support of the wound tape and in order to store a maximum of tape in the roll, such core member preferably is of a relatively small diameter with respect to the overall diameter of the roll.
  • the wound roll When the tape comprises an extensible film serving as a substrate for the functional coating, the wound roll often deforms when subjected to ambient temperatures encountered in storage, shipment, and use, due in large part to the forces exerted upon the film by the coating whose coefficients of expansion are different from those of the film. This deformation may result in axial telescoping or peripheral dishing of the roll of tape, wrinkling of the tape, loss of uniform wind of the tape, loosening of the tape upon its core, or other undesirable effects. To compensate for such deformation, various mechanical devices have been suggested such as special cores for supporting the tape, as, for example, resilient cores, large diameter cores, slotted cores, and the like.
  • the compensating support given to the tape by the core is largely limited to the portion of the rolled tape contiguous the core itself, the unconfined sides of the roll becoming quite flexible, such flexibility increasing with decreasing ratio of the diameter of the core to the overall diameter of the roll.
  • the present invention has as a purpose the overcoming of the above-mentioned problems by suitable treatment of the tape itself, all to the end that the roll of tape may retain its specified form even under the ambient temperatures encountered after the roll is manufactured.
  • An object of the invention is to provide an improved form-retaining roll of extensible tape.
  • Another object is to provide a method for manufacturing an improved form-retaining roll of extensible tape.
  • FIG. 1 is a chart illustrating the sequence of steps en ployed in the production of the form-retaining rolls of tape characteristic of the invention
  • FIG. 2 is a side elevation of a completed roll of tape
  • FIG. 3 is a sectional view taken on line 3-3 of FIG. 2.
  • thermoplastic thin film of substantial width has a functional coating applied thereto on one face thereof and this coated film serves as a tape intermediate article of manufacture.
  • This intermediate is then suitably heated to cause a relaxing of the same with an accompanying physical sagging of the intermediate.
  • the relaxed coated film is thereafter subjected to a winding tension and with the coated film being at a prescribed temperature during the winding of the same into roll form.
  • the wound tape is at this time deposited directly upon a central core and with the wide intermediate being subdivided into a plurality of firmly wound small rolls during such winding.
  • the invention includes as alternatives the formation of a single wound roll of Wide width upon a Wide core as Well as the later rewinding and subdivision of the completely treated wide intermediate into separate small rolls.
  • Each such roll has its tape convolutely wound on its core and with the parallel sides of the roll being rigid and unconfined, the innermost turn of the tape being supported by the core of the roll.
  • Each roll as thus produced has the property of being substantially form-retaining when later subjected to temperatures within the range of 50 F. to 140 F. and which temperature range includes the ambient temperatures likely to be encountered by the roll during normal use of the tape.
  • the tape intermediate indicated in FIG. 1 comprises an extensible thermoplastic film having a functional coating on one face thereof, it being understood that the precise method of applying such coating in adhering relation to the film forms no part of the present invention and is conducted upon conventional apparatus by using conventional coating techniques.
  • the precise type and thickness of the film and type and thickness of coating are chosen in accordance with the intended usage of the finished tape.
  • the film may comprise an extensible thermoplastic material, such as cellulose acetate, cellulose acetate butyrate, polyethylene, nylon, Mylar, or the like.
  • the coating for such an illustrative tape may included a hot melt microcrystalline wax as a base material, a resinous base material, or the like.
  • the film which jointly serves to support its adhering coating in a uniform layer and to give structural strength to the tape preferably has the following combined characteristics: a modulus of elasticity in tension of not more than 4.0 10 p.s.i., an elongation of not less than 10%, a coefficient of linear thermal expansion greater than 7 X 10 per de ree centrigrade, and a thickness of not more than 2.0 mils.
  • the lower limit of thickness of the film depends essentially upon the structural strength required of the tape during its use, it being apparent that When the requirement of structural strength is satisfied, the thinner the film the more of the tape which can be stored in a roll of given diameter.
  • the coating preferably has a thickness in all cases of not less than 0.05 mil and not more than 2.0 mils.
  • the tape intermediate may be about inch in width and 0 feet long, being wound in temporary roll form upon passage from the apparatus in which the coating is applied to the film.
  • the described large roll of tape intermediate is subjected to an essential preconditioning step wherein a relaxation of the coated film occurs with a concomitant physical sagging of the same. It has been found that the necessary relaxation will be induced when the coated film, depending upon the particular constituents of film and coating, is heated for a period of not less than 20 hours at a temperature of not less than 90 F. and not more than F.
  • the higher the preconditioning temperature the shorter the preconditioning time required, provided at least 20 hours of treatment is secured. Greater lengths of time may, of course, be used with temperatures less than 140 F., but it has been found at the temperature of 90 F. no benefit is secured by periods of treatment in excess of 170 hours.
  • a conventional oven or the like maintained at a constant temperature may be employed for this preconditioning.
  • the relaxed tape intermediate may be stored indefinitely for later conversion, or may be promptly passed to the converting state of operation now to be described.
  • the conversion may be conducted upon any conventional winding apparatus capable of maintaining a prescribed tension upon the tape being wound and While that tape is at a prescribed temperature.
  • the tape may be wound into small rolls each having a core -10 and with the wide tape intermediate preferably being slitted during the winding to form a plurality of such rolls simultaneously.
  • Each roll has its innermost turn 11 of tape supported upon the periphery of the core, the two parallel sides 12 and 13 of the roll are unconfined and all portions of the outermost turn of the tape lie at a substantially uniform distance from the axis of the core.
  • a leader strip 14 may also be attached to the trailing edge of the tape being wound upon the core and the diameter of the finished roll is at least twice the diameter of the core.
  • the tape also has to be at a prescribed temperature at the time of its winding in order to achieve the improved dimensional stability upon its roll, and which is characteristic of the invention.
  • the reason for this phenomenon is not known but experience has shown that rolls of tape produced without the tape having been at the proper conversion temperature during its winding (all other steps of the process being followed) will not possess the dimensional stability found in rolls wherein such proper conversion temperature conditions were employed.
  • the winding operation conducted upon the roll which, for example, may include about 925 feet of tape, may be accomplished in the order of 3 minutes and which time period may coincide with the period of conversion heating, as when the relaxed tape is at a temperature lower than the required conversion temperature upon being passed to the winding shaft.
  • any suitably regulated heating means located adjacent the winding shaft of the winding apparatus may be employed.
  • conventional winding and supplementary heating equipment forming no part of the present invention may also be employed at this conversion stage.
  • Example 1 A tape intermediate comprising a film of cellulose acetate butyrate with a thickness of 0.88 mil was provided with a transferable coating in the form of a petroleum wax base having a pigment dispersed therein for printing purposes in a typewriter, the coating having a thickness of 0.15 mil.
  • the intermediate was preconditioned at a temperature of 100 F. for 24 hours. Thereafter, the relaxed tape intermediate was wound and subdivided into small rolls at a tension of 150 grams per lineal inch of its width and at a conversion temperature of 90 F. The finished rolls were of 7 inch width on a core of 1 /2 inch diameter and with an overall roll diameter of 4 inches. Upon being later subjected during use to ambient temperatures ranging from 50 F.
  • the small rolls of tape remained dimensionally stable during their expansions and contractions without telescoping on their cores, becoming loose on such cores, or wrinkling.
  • the innermost turn of each roll moreover, remained firmly supported on its core and the unconfined sides of the roll remained rigid and parallel to each other when bending pressure was manually applied thereto transversely of the roll.
  • no scalloping or dishing occurred at the periphery of the roll.
  • Example 1A The sametape intermediate described in Example 1 was preconditioned at a temperature of F. for 48 hours and thereafter the relaxed tape intermediate was wound into the small rolls at a tension of 100 grams per lineal inch of its width and at a conversion temperature of 90 F. The dimensional stability of the small rolls was substantially the same as the small rolls in Example 1.
  • Example 2 A tape intermediate comprising a film of 0.95 specific gravity polyethylene 0.75 mil in thickness was provided with a transferable coating in the form of a vegetable wax base having a pigment dispersed therein for printing purposes in a typewriter and with a coating thickness of 0.20 mil. The intermediate was preconditioned at a temperature of 100 F. for 36 hours. Thereafter, the relaxed tape intermediate was wound into small rolls at a tension of 300 grams per lineal inch of its width and at a conversion temperature of 105 F. The finished rolls exhibited the same dimensional stability found in the small rolls of Example 1.
  • Example 2A The same tape intermediate described in Example 2 was preconditioned at a temperature of 100 F. for 56 hours and thereafter the relaxed tape intermediate was wound into the small rolls at a tension of 150 grams per lineal inch of width and at a conversion temperature of F. The finished rolls exhibited the same dimensional stability found in the small rolls of Example 1.
  • Example 3 A tape intermediate comprising a film of 0.96 specific gravity polyethylene with a thickness of 0.90 mil was provided with a transferable coating in the form of a vegetable wax base having a pigment dispersed therein for printing purposes in a typewriter and with a coating thickness of 0.20 mil. The intermediate was preconditioned at a temperature of F. for 48 hours. Thereafter, the relaxed tape intermediate was wound into small rolls at a tension of 400 grams per lineal inch of its width and at a conversion temperature of F. The finished small rolls exhibited the same dimensional stability found in the small rolls of Example 1.
  • Example 3A The same tape intermediate described in Example 3 was preconditioned at a temperature of 100 F. for 60 hours and thereafter the relaxed tape intermediate was wound into the small rolls at a tension of 200 grams per lineal inch of its width and at a conversion temperature of 100 F. The finished rolls exhibited the same dimensional stability found in the small rolls of Example 1.
  • tension applied to the relaxed tape during its winding is insuflicient to cause the film and its applied coating to become unduly attenuated, a residual extensibility at all times remaining in the film after it is wound upon the core.
  • the method of producing form-retaining rolls of extensible tape having substantial dimensional stability under ambient temperatures within the range of about 90 F. to 140 F including, providing a wide tape intermediate comprising a thermoplastic film having a coating on one face thereof, heating said intermediate for a period of not less than 20 hours and at a temperature of not less than 90 F. to cause the same to relax and to assume a sag, and winding the relaxed intermediate under tension and at a predetermined temperature while under said tension thereby to form a roll of tape characterized by its dimensional stability under said ambient temperatures.
  • a roll of extensible tape comprising a thermoplastic film having a coating on one face thereof, the steps comprising heating a sheet of said coated film at a temperature of not less than 90 F. nor more than 140 F. for a period of time not less than hours nor more than 170 hours and forming thereby a relaxed sheet of said coated film, and thereafter winding said relaxed sheet of said coated film under a tension of not less than 10 grams nor more than 400 grams per lineal inch of width of said relaxed sheet into a roll, said relaxed sheet being at a temperature of not less than 80 F. nor more than 140 F. during said winding under said tension.
  • a roll of extensible tape comprising a film of cellulose acetate butyrate having a thickness of about 0.00088 inch with a coating of petroleum wax having a thickness of about 0.00015 inch on one face thereof, the steps comprising heating a sheet of said coated film at a temperature of about 100 F. for about 24 hours and forming a relaxed sheet of said coated film and thereafter winding said relaxed sheet of said coated film under a tension of about 150 grams per lineal inch of width of said relaxed sheet into a roll, said relaxed sheet being at a temperature of about F. during said Winding under said tension.
  • a roll of extensible tape comprising a film of polyethylene having a thickness of about 0.00075 inch and a specific gravity of 0.95 with a coating of vegetable wax having a thickness of about 0.0002 inch on one face thereof, the steps comprising heating a sheet of said coated film at a temperature of about F. for about 36 hours and forming a relaxed sheet of said coated film and thereafter winding said relaxed sheet of said coated film under a tension of about 300 grams per lineal inch of Width of said relaxed sheet into a roll, said relaxed sheet being at a temperature of about F, during said winding under said tension.
  • a roll of extensible tape comprising a film of polyethylene having a thickness of about 0.0009 inch and a specific gravity of 0.96 with a coating of vegetable wax having a thickness of about 0.0002 inch on one face thereof, the steps comprising heating a sheet of said coated film at a temperature of about 100 F. for about 48 hours and forming a relaxed sheet of said coated film and thereafter Winding said relaxed sheet of said coated film under a tension of about 400 grams per lineal inch of width of said relaxed sheet into a roll, said relaxed sheet being at a temperature of about 105 F. during said winding under said tension.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Winding Of Webs (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
US49360A 1960-08-12 1960-08-12 Method for producing a form-retaining roll of extensible tape Expired - Lifetime US3061886A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US49360A US3061886A (en) 1960-08-12 1960-08-12 Method for producing a form-retaining roll of extensible tape
DE19611479317 DE1479317B2 (de) 1960-08-12 1961-07-01 Verfahren zum formhaltigen Aufwickeln thermoplastischer Folien
GB25947/61A GB913913A (en) 1960-08-12 1961-07-18 Method of producing a roll of thermoplastic web
DK314961AA DK117252B (da) 1960-08-12 1961-08-01 Fremgangsmåde til behandling af en termoplastisk folie med høj elasticitet til undgåelse af formforandringer ved temperaturvariationer.
ES0269576A ES269576A1 (es) 1960-08-12 1961-08-04 Mejoras introducidas en la fabricaciën de rollos de cinta extensible con estabilidad de forma
CH928361A CH394590A (de) 1960-08-12 1961-08-08 Verfahren zur Verarbeitung thermoplastischer Folien
NO141160A NO121180B (en)van) 1960-08-12 1961-08-11

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Application Number Priority Date Filing Date Title
US49360A US3061886A (en) 1960-08-12 1960-08-12 Method for producing a form-retaining roll of extensible tape

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US3061886A true US3061886A (en) 1962-11-06

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US49360A Expired - Lifetime US3061886A (en) 1960-08-12 1960-08-12 Method for producing a form-retaining roll of extensible tape

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US (1) US3061886A (en)van)
CH (1) CH394590A (en)van)
DE (1) DE1479317B2 (en)van)
DK (1) DK117252B (en)van)
ES (1) ES269576A1 (en)van)
GB (1) GB913913A (en)van)
NO (1) NO121180B (en)van)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461199A (en) * 1966-05-03 1969-08-12 Du Pont Process for improving dimensional stability of tensilized polyester film
US3873664A (en) * 1973-08-29 1975-03-25 Celanese Corp Heat treatment of polyester rolls
US3936559A (en) * 1971-02-19 1976-02-03 Columbia Ribbon And Carbon Manufacturing Co., Inc. Pressure-sensitive transfer elements
US4087579A (en) * 1976-01-16 1978-05-02 Columbia Ribbon & Carbon Mfg. Co., Inc. Pressure-sensitive transfer elements
US4141735A (en) * 1975-03-31 1979-02-27 Eastman Kodak Company Process for reducing core-set curling tendency and core-set curl of polymeric film elements
US4226818A (en) * 1979-06-08 1980-10-07 Monsanto Company Production of polyvinylbutyral sheet rolls
EP0347786A1 (de) * 1988-06-24 1989-12-27 Audi Ag Verfahren und Vorrichtung zum Montieren von Riemen an Riementrieben
US4942000A (en) * 1986-07-30 1990-07-17 Penoyer John A Contactless knurling process for winding of high modulus thermoplastic films

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2176153A (en) * 1937-12-07 1939-10-17 Goodrich Co B F Method of stress-relieving plastics
US2177661A (en) * 1938-08-13 1939-10-31 Eastman Kodak Co Method and apparatus for improving thermoplastic sheeting
US2451597A (en) * 1944-08-23 1948-10-19 Bakelite Corp Annealing of calendered thermoplastic material
US2772774A (en) * 1953-03-19 1956-12-04 Minnesota Mining & Mfg Tape roll and core
US2779684A (en) * 1954-06-08 1957-01-29 Du Pont Polyester films and their preparation
US2812550A (en) * 1953-08-17 1957-11-12 Chavannes Marc Alfred Method for making stretched thermoplastic film
US2876893A (en) * 1954-08-30 1959-03-10 Johnson & Johnson Adhesive tape with convolutions tensioned under predetermined program
US2903379A (en) * 1952-06-06 1959-09-08 Johnson & Johnson Method of preventing distortion or change of shape in pressure-sensitive adhesive tapes
US2952033A (en) * 1957-10-16 1960-09-13 Chemstrand Corp Apparatus for annealing filamentary tow

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2176153A (en) * 1937-12-07 1939-10-17 Goodrich Co B F Method of stress-relieving plastics
US2177661A (en) * 1938-08-13 1939-10-31 Eastman Kodak Co Method and apparatus for improving thermoplastic sheeting
US2451597A (en) * 1944-08-23 1948-10-19 Bakelite Corp Annealing of calendered thermoplastic material
US2903379A (en) * 1952-06-06 1959-09-08 Johnson & Johnson Method of preventing distortion or change of shape in pressure-sensitive adhesive tapes
US2772774A (en) * 1953-03-19 1956-12-04 Minnesota Mining & Mfg Tape roll and core
US2812550A (en) * 1953-08-17 1957-11-12 Chavannes Marc Alfred Method for making stretched thermoplastic film
US2779684A (en) * 1954-06-08 1957-01-29 Du Pont Polyester films and their preparation
US2876893A (en) * 1954-08-30 1959-03-10 Johnson & Johnson Adhesive tape with convolutions tensioned under predetermined program
US2952033A (en) * 1957-10-16 1960-09-13 Chemstrand Corp Apparatus for annealing filamentary tow

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461199A (en) * 1966-05-03 1969-08-12 Du Pont Process for improving dimensional stability of tensilized polyester film
US3936559A (en) * 1971-02-19 1976-02-03 Columbia Ribbon And Carbon Manufacturing Co., Inc. Pressure-sensitive transfer elements
US3873664A (en) * 1973-08-29 1975-03-25 Celanese Corp Heat treatment of polyester rolls
US4141735A (en) * 1975-03-31 1979-02-27 Eastman Kodak Company Process for reducing core-set curling tendency and core-set curl of polymeric film elements
US4087579A (en) * 1976-01-16 1978-05-02 Columbia Ribbon & Carbon Mfg. Co., Inc. Pressure-sensitive transfer elements
US4226818A (en) * 1979-06-08 1980-10-07 Monsanto Company Production of polyvinylbutyral sheet rolls
US4942000A (en) * 1986-07-30 1990-07-17 Penoyer John A Contactless knurling process for winding of high modulus thermoplastic films
EP0347786A1 (de) * 1988-06-24 1989-12-27 Audi Ag Verfahren und Vorrichtung zum Montieren von Riemen an Riementrieben

Also Published As

Publication number Publication date
DE1479317A1 (de) 1969-05-29
GB913913A (en) 1962-12-28
NO121180B (en)van) 1971-01-25
CH394590A (de) 1965-06-30
ES269576A1 (es) 1961-12-16
DE1479317B2 (de) 1970-05-27
DK117252B (da) 1970-04-06

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