GB1030288A - Method of making a polymeric strap - Google Patents

Method of making a polymeric strap

Info

Publication number
GB1030288A
GB1030288A GB30811/64A GB3081164A GB1030288A GB 1030288 A GB1030288 A GB 1030288A GB 30811/64 A GB30811/64 A GB 30811/64A GB 3081164 A GB3081164 A GB 3081164A GB 1030288 A GB1030288 A GB 1030288A
Authority
GB
United Kingdom
Prior art keywords
strap
drum
stretch
hot
imparted
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
Application number
GB30811/64A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FMC Corp
Original Assignee
FMC Corp
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 FMC Corp filed Critical FMC Corp
Publication of GB1030288A publication Critical patent/GB1030288A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/885—External treatment, e.g. by using air rings for cooling tubular films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
    • B29C48/9155—Pressure rollers
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

1,030,288. Films. FMC CORPORATION. Aug. 4, 1964 [Aug. 27, 1963], No. 30811/64. Heading B5B. A strap of hot polymeric material is oriented by imparting stretch to a straight line segment of the strap while positively preventing any stretch from being imparted to any other portion of the strap. Specified polymeric materials include polyethylene and polypropylene, polycarbonates, polyesters, polyamides, e.g. polyhexamethylene adipamide, acrylic resins and polystyrene. Stretch may be imparted to the strap between a relatively slow hot drum 32 or 42 and a relatively fast cold drum, 34 or 44, any stretch on the curved surface of the hot drum being prevented by nipping the strap against the hot drum at the point of departure of the strap therefrom, e.g. by rolls 33 or 43. As in Fig. 2, the strap may be directed tangentially of the cold drum and nipped against the drum at the point of tangency. One side of the strap is rapidly cooled by contact with drum 34 while the other side of the strap cools more slowly and shrinks to a narrower width than the rapidly cooling side, thus producing a cambered strap as in Fig. 4 (not shown), the convex side 15<SP>1</SP> being that which was in contact with the drum. Such straps have some coil set due to the passage of film about drum 23, but this can be substantially eliminated by winding the strap in the opposite direction on reel 27. Alternatively, both sides of the strap may be brought to the same temperature while in engagement with the fast drum, suitably, as in Fig. 3, by immersing the strap in a liquid medium while the stretch is being imparted thereto. Straps so made are free from camber owing to the absence of a temperature differential between the two sides of the strap, and are free from coil set as the drum 23 of Fig. 3 is at substantially the same temperature as the strap.
GB30811/64A 1963-08-27 1964-08-04 Method of making a polymeric strap Expired GB1030288A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30491363A 1963-08-27 1963-08-27

Publications (1)

Publication Number Publication Date
GB1030288A true GB1030288A (en) 1966-05-18

Family

ID=23178511

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30811/64A Expired GB1030288A (en) 1963-08-27 1964-08-04 Method of making a polymeric strap

Country Status (1)

Country Link
GB (1) GB1030288A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299560A2 (en) * 1987-07-14 1989-01-18 Agfa-Gevaert N.V. Process for making a curled photographic film
US4892689A (en) * 1987-07-14 1990-01-09 Agfa-Gevaert N.V. Process for making curled photographic film
EP0402484A1 (en) * 1988-12-29 1990-12-19 Dai Nippon Insatsu Kabushiki Kaisha Production of ultrahigh-molecular polyethylene sheet
US4994214A (en) * 1988-07-05 1991-02-19 Agfa-Gevaert, N.V. Process for controlling the curl of photographic film
US5076977A (en) * 1990-01-10 1991-12-31 Eastman Kodak Company Process for controlling curl in polyester film

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299560A2 (en) * 1987-07-14 1989-01-18 Agfa-Gevaert N.V. Process for making a curled photographic film
US4892689A (en) * 1987-07-14 1990-01-09 Agfa-Gevaert N.V. Process for making curled photographic film
EP0299560A3 (en) * 1987-07-14 1991-09-04 Agfa-Gevaert N.V. Process for making a curled photographic film
US4994214A (en) * 1988-07-05 1991-02-19 Agfa-Gevaert, N.V. Process for controlling the curl of photographic film
EP0402484A1 (en) * 1988-12-29 1990-12-19 Dai Nippon Insatsu Kabushiki Kaisha Production of ultrahigh-molecular polyethylene sheet
EP0402484B1 (en) * 1988-12-29 1996-04-24 Dai Nippon Insatsu Kabushiki Kaisha Production of ultrahigh-molecular polyethylene sheet
US5076977A (en) * 1990-01-10 1991-12-31 Eastman Kodak Company Process for controlling curl in polyester film

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