Patent GB-690004-A (GB)
Title: Process for producing textile-like materials from highly polymeric organic substances
IPC: B44F11/00
Filed: 1951-02-15
Abstract: Organic material of a textile-like nature having a large number of continuous individual elements or threads forming a continuous network is made as follows: (1) the material, which is a highly polymeric organic substance, e.g. a polyvinyl compound, a super-polyamide or a cellulose ester, is brought into a plastic, viscous or pasty condition by the action of heat and/or solvents and/or plasticizers; (2) the plastic &c. material is applied to the surface of a roller or plate having grooves constituting a network pattern in intaglio; (3) superficial plastic material is removed from the surface, material being retained only in the grooves; (4) the resultant network pattern of plastic material is imprinted from the roller &c. on to a base support; (5) the pattern, while on the base, is transformed into a firm continuous material, and removed from the base.  The product may be used as curtain fabric, lace tablecloths, furniture fabric, decorative fabric or fishing nets.  The organic substance may be initially mixed in powder form with a plasticizing agent or solvent to form a paste, and when the paste has been printed on to the base it is heated to gelatinize the substance or remove excess solvent, whereby it is hardened or solidified; alternatively it may, in the case of a superpolyamide for example, be initially plasticized by heat alone, in which case it is solidified on the base by cooling the latter.  The textile-like product may be removed from the base in various ways.  Thus, if the material is printed on to an endless metal band moving between two rollers of which the upper bears the design, the material may be removed by simply drawing off and winding up, or by scraping off with knives; in this procedure the steel band is first strongly heated and then cooled. Alternatively, the base may be dissolved away from the product; e.g. a paste consisting of a polyvinyl compound and pyridine is printed on to "Cellophate" (Registered Trade Mark), and the Cellophane is dissolved by cold strong sulphuric acid; or a viscous solution of a superpolyamide in phenol is printed on to a cellulose acetate film, the superpolyamide is precipitated in solid form by heating or by treatment with water, and finally the p  cellulose acetate is dissolved in acetone; or a base composed of gelatine, aliginate or starch may be dissolved in water.  When the base is to be dissolved it may be a thin foil supported on leather or rubber, which is in turn supported on steel; in this case the supports may be endless bands of leather or balata supported by pressure rollers.  The organic substance may be dyed, and differently coloured materials may be successively printed on the base to form a vari-coloured fabric. The fabric may be stretched to strengthen it.  Specification 605,105 is referred to.ALSO:Organic material of a textile-like nature having a large number of continuous individual elements or threads forming a continuous network is made as follows:-(1) The material, which is a highly polymeric organic substance, e.g., polyvinyl compounds, super-polyamides or cellulose esters, is brought into a plastic, viscous or pasty condition by the action of heat and/or solvents and/or plasticisers.  (2) The plastic &c. material is applied to the surface of a roller or plate having grooves constituting a network pattern in intaglio.  (3) Superficial plastic material is removed from the surface, material being retained only in the grooves.  (4) The resultant network pattern of plastic material is imprinted from the roller &c., on to a base support.  (5) The pattern, while on the base, is transformed into a firm continuous material, and removed from the base.  The product may be used as curtain fabric, lace tablecloths, furniture fabric, decorative fabric or fishing nets. The organic substance may be initially mixed in powder form with a plasticising agent or solvent to form a paste, and when the paste has been printed on to the base it is heated to gelatinise the substance or remove excess solvent, whereby it is hardened or solidified; alternatively it may, in the case of a superpolyamide for example, be initially plasticised by heat alone, in which case it is solidified on the base by cooling the latter.  The textile-like product may be removed from the base in various ways.  Thus, if the material is printed on to an endless metal band moving between two rollers of which the upper bears the design, the material may be removed by simply drawing off and winding up, or by scraping off with knives; in this procedure the steel band is first strongly heated and then cooled. Alternatively, the base may be dissolved away from the product; e.g. a paste consisting of polyvinyl compound and pyridine is sprinted on to "Cellophane" (Registered Trade Mark), and the Cellophane is dissolved by cold strong sulphuric acid; or a viscous solution of superpolyamide in phenol is printed on to a cellulose acetate film, the superpolyamide is precipitated in solid form by heating or by treatment with water, and finally the cellulose acetate is dissolved in acetone; or a base composed of gelatine, aliginate or starch may be dissolved in water.  When the base is to be dissolved it may be a thin foil supported on leather or rubber, which is in turn supported on steel; in this case the supports may be endless bands of leather or balata supported by pressure rollers.  The organic substance may be dyed, and differently-coloured materials may be successively printed on the base to form a vari-coloured fabric. The fabric may be stretched to strengthen it.  Specification 605,105 is referred to.