US3353985A - Floor coverings and the like - Google Patents

Floor coverings and the like Download PDF

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Publication number
US3353985A
US3353985A US339726A US33972664A US3353985A US 3353985 A US3353985 A US 3353985A US 339726 A US339726 A US 339726A US 33972664 A US33972664 A US 33972664A US 3353985 A US3353985 A US 3353985A
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US
United States
Prior art keywords
coating
doctor knife
sheet
thermoplastic material
applying
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
Application number
US339726A
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English (en)
Inventor
Harrison Alan Morley
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.)
Welwyn Plastics 1955 Ltd
Original Assignee
Welwyn Plastics 1955 Ltd
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 Welwyn Plastics 1955 Ltd filed Critical Welwyn Plastics 1955 Ltd
Application granted granted Critical
Publication of US3353985A publication Critical patent/US3353985A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0005—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface
    • D06N7/0028—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface characterised by colour effects, e.g. craquelé, reducing gloss

Definitions

  • This invention relates to floor coverings, leathercloth, coated paper and the like with especial reference to socalled spread flooring, being sheet material having an upper or wearing surface in the form of an applied thermoplastic coating.
  • the base material may be any appropriate kind of fabric, felt, paper, metal foil or indeed any flexible sheet material which can be supplied in roll form.
  • the coating is applied in the form of a paste of thermoplastic material capable of being cured by heat and is suitably polyvinylchloride, P.V.C. cured by infra-red irradiation after being applied to the moving sheet under a doctor knife which defines the thickness of the applied coating.
  • the invention provides for the simultaneous application to the base material of coloured paste or coloured pastes of similar character via the doctor knife, prior to curing, so that a patterned upper or wearing surface is obtained.
  • the doctor knife through which the coloured paste is applied may be oscillatable and programme controlled to give variable patterns capable of repetition, and as will be appreciated there may be more than one different colour paste application, but all must be simultaneous with the application of the matrix of thermoplastic material forming the coating.
  • the cured coated sheet material may be given any desired surface finish, e.g. by passage of the coated sheet through suitably engraved rolls.
  • paste for the matrix is advantageously supplied by gravity feed from a hopper or by hand to the surface of the base material as it approaches the doctor knife of the coating or spreading machine.
  • the additional pattern forming paste or pastes which may be transparent, white or coloured, may be applied through ducts in or associated with the doctor blade and may be fed by hydrostatic head from hoppers arranged above the doctor knife, preferably with valves in the connecting ducts.
  • the doctor knife is advantageously a composite structure with the ducts for the application of paste formed by co-operative grooves in mating components of the knife which can be dismantled and separated to facilitate cleaning.
  • the ducts are distributed at spaced intervals along the doctor knife, i.e. across the web of material passing through the coating or spreading machine, and where provision is made for transverse oscillation of the knife, it is preferred not to interrupt the supply of additional paste but to remove any surplus at each side of the web by scrapers or similar devices.
  • Programming of the doctor knife oscillation may be effected by a reversible electric motor, but the oscillation is preferably effected hydraulically suitably under the control of a programming device which may follow any Patented Nov. 21, 1967 selected one of a plurality of patterns moving in synchronism with the passage of the web of base material through the spreading machine.
  • the programme may be in the form of a continuous or non-continuous band with perforations or serrated edge.
  • it may be a rotating disc with perforations, slots or serrations.
  • the band or disc when fed through the sensing head of a hydraulic controller varies the pressure or vacuum set up in the system and thereby operates the hydraulic mechanism.
  • the band or disc may interrupt the beam of light in a photo-electric type of sensing head which in turn operates the hydraulic mechanism.
  • FIGURE 1 is a perspective view of the apparatus.
  • FIGURE 2 is a side view of a doctor knife taken on the lines IIII of FIGURE 3 while FIGURE 3 is a front view of the doctor knife and FIGURE 4 is a detail view taken in cross section on the lines IVIV of FIGURE 3.
  • FIG. 1 represents the continuous web of base material drawn from a supply roll 2 over a guide roller 3 and passing under a doctor knife generally designated 4.
  • the web then passes through an infrared oven 5 to pull-through rollers 6, the web being supported during its passage through the oven 5 on freely rotating rollers 7, 8 and 9.
  • doctor knife 4 is a hopper divided into two separate containers 10a and 10b for polyvinyl pastes of the required colours for the pattern it is desired to form 11 and 12 are downcomer pipes leading from the containers 10a and 1% respectively to the doctor knife 4.
  • the main coating of polyvinylchloride paste for the web is applied to it by hand or from a third hopper by means of a duct or pipe, at a position ahead of the doctor knife where it passes over a table 14 between guards or vanes 20 and 21.
  • the doctor knife 4 is oscillatable laterally of the web 1 and its lateral position is determined by an hydraulic ram 22 controlled by a sensing head 23.
  • FIGURES 2, 3 and 4 show the doctor knife in greater detail.
  • 24 and 25 are front and back plates which are clamped on opposite sides of the blade 38 of the knife by the bolts 37.
  • 26 and 27 are ports through the plates 24 and 25 and provide communication between the downcomers 12 and 11 respectively, with galleries 28 formed in the blade 38.
  • ducts 30 terminating in orifices 31.
  • the orifices 31 are formed in steel sleeves 32 which are located in bores 34 formed for the purpose in the blade 38. Before the plates 24 and 25 are fixed to the blade 38 the sleeves 32 are passed from above into the bores 34 by way of the ducts 30 and are then rotated until shoulders 33 are engaged in recesses 35. If necessary the lower ends of the sleeves 32 are machined flush with the lower face of the blade 38.
  • the sleeves 32 are removable for cleaning or replacement and sleeves with orifices of different sizes may be substituted so that the correct size may be employed for a particular pattern.
  • 36 represents bolts which project into the ducts 30 and may be adjusted to control the flow of material through the ducts from galleries 28 to orifices 31.
  • the pull-through rollers 6 are driven by a belt or chain 29 from an electric-motor (not shown) it being understood that their speed of rotation regulates the rate at which the coated web 1 passes through the infra-red oven 5.
  • a method of applying a coating. of thermoplastic material capable of being cured by heat to a base material in sheet form comprising applying a basic coating of thermoplastic material to a moving sheet of the base material, passing the moving coated sheet under a transversely oscillating doctor knife having an operative edge which defines the thickness of the applied coating, simultaneously, and While doctoring the base coating, applying through transversely spaced separate orifices in said operative edge, additional thermoplastic material of a character similar to the base coating but of a different color; and doctoring with said oscillating doctor knife said basic coating and said additional material while it is being applied to form a patterned coating on said sheet of base material, and subsequently curing said applied coating.
  • thermoplastic material is applied through at least 4 two longitudinally spaced rows of transversely spaced separate orifices in the operative edge of said doctor knife.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Floor Finish (AREA)
US339726A 1963-01-24 1964-01-23 Floor coverings and the like Expired - Lifetime US3353985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3100/63A GB1023482A (en) 1963-01-24 1963-01-24 Improvements in coated fabrics

Publications (1)

Publication Number Publication Date
US3353985A true US3353985A (en) 1967-11-21

Family

ID=9751939

Family Applications (1)

Application Number Title Priority Date Filing Date
US339726A Expired - Lifetime US3353985A (en) 1963-01-24 1964-01-23 Floor coverings and the like

Country Status (4)

Country Link
US (1) US3353985A (de)
BE (1) BE642898A (de)
GB (1) GB1023482A (de)
NO (1) NO124551B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3507674A (en) * 1965-10-23 1970-04-21 Donald Deskey Associates Inc Plateless printing process

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1726055A (en) * 1925-08-29 1929-08-27 Carthage Mills Inc Ornamentation process and apparatus therefor
US2695005A (en) * 1953-01-05 1954-11-23 Tobey Color Card Company Apparatus for applying color coatings to sheet material
US2761418A (en) * 1955-02-23 1956-09-04 Eastman Kodak Co Multiple coating apparatus
US2851372A (en) * 1956-08-14 1958-09-09 Sun Steel Company Coated metal sheet and method of making the same
US2932855A (en) * 1956-09-11 1960-04-19 Eastman Kodak Co Method for forming film or sheeting
US3006026A (en) * 1957-03-02 1961-10-31 Glanzstoff Ag Spinneret with orifice insert
US3032008A (en) * 1956-05-07 1962-05-01 Polaroid Corp Apparatus for manufacturing photographic films
US3155540A (en) * 1959-06-15 1964-11-03 Landers Corp Apparatus for the extrusion coating of fabric or like materials
US3174183A (en) * 1962-04-16 1965-03-23 Us Rubber Co Spinneret plate

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1726055A (en) * 1925-08-29 1929-08-27 Carthage Mills Inc Ornamentation process and apparatus therefor
US2695005A (en) * 1953-01-05 1954-11-23 Tobey Color Card Company Apparatus for applying color coatings to sheet material
US2761418A (en) * 1955-02-23 1956-09-04 Eastman Kodak Co Multiple coating apparatus
US3032008A (en) * 1956-05-07 1962-05-01 Polaroid Corp Apparatus for manufacturing photographic films
US2851372A (en) * 1956-08-14 1958-09-09 Sun Steel Company Coated metal sheet and method of making the same
US2932855A (en) * 1956-09-11 1960-04-19 Eastman Kodak Co Method for forming film or sheeting
US3006026A (en) * 1957-03-02 1961-10-31 Glanzstoff Ag Spinneret with orifice insert
US3155540A (en) * 1959-06-15 1964-11-03 Landers Corp Apparatus for the extrusion coating of fabric or like materials
US3174183A (en) * 1962-04-16 1965-03-23 Us Rubber Co Spinneret plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3507674A (en) * 1965-10-23 1970-04-21 Donald Deskey Associates Inc Plateless printing process

Also Published As

Publication number Publication date
GB1023482A (en) 1966-03-23
NO124551B (de) 1972-05-02
BE642898A (de) 1964-05-15
DE1629760B1 (de) 1971-12-23

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