GB470331A - Improvements relating to the manufacture of material and articles from resinous substances - Google Patents

Improvements relating to the manufacture of material and articles from resinous substances

Info

Publication number
GB470331A
GB470331A GB304036A GB304036A GB470331A GB 470331 A GB470331 A GB 470331A GB 304036 A GB304036 A GB 304036A GB 304036 A GB304036 A GB 304036A GB 470331 A GB470331 A GB 470331A
Authority
GB
United Kingdom
Prior art keywords
fabric
reinforcement
composite material
tension
impregnated
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
GB304036A
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.)
De Havilland Aircraft Co Ltd
Original Assignee
De Havilland Aircraft Co 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 De Havilland Aircraft Co Ltd filed Critical De Havilland Aircraft Co Ltd
Priority to GB304036A priority Critical patent/GB470331A/en
Publication of GB470331A publication Critical patent/GB470331A/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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres

Abstract

A composite material comprising a substance capable of being hardened or set, reinforced with a non-metallic fibrous or filamentary material in felted, corded, or woven condition, is produced by imparting to the reinforcement a substantially permanent predetermined tension either during or after the manufacture of the composite material, the tension being equal to or greater than the maximum tensile stress to which the material is intended to be subjected during use. The setting substance may comprise natural or artificial resins, cellulose esters, and similar products. In an example, a cotton or artificial silk fabric is impregnated with a phenol-formaldehyde resin dissolved in methylated spirits or acetone by being drawn through a bath over suitable rollers. The impregnated fabric is then dried and stretched on a frame having one or more movable sides to which a load is applied by means of weights or turnbuckles. A stress of 2,000 lb. per sq. inch or more is applied to the fabric and is maintained while the fabric is pressed between hot plates to harden the resin. When using a thermo-plastic substance such as cellulose acetate or an acrylic ester, the material is heated to soften it and the tensile stress is maintained until the material has once more cooled below the softening point. In some cases, the tension may be imparted to the reinforcement by twisting it or by working the composite material while plastic. Tensile stresses of varying amount may be applied to different parts of the reinforcement or in different directions. The reinforcement may be of paper or felt as well as fabric or strands.ALSO:A composite material comprising chlorinated rubber or other substance capable of being hardened or set reinforced with a non-metallic fibrous or filamentary material in felted, corded, or woven condition, is produced by imparting to the reinforcement a substantially permanent predetermined tension either during or after the manufacture of the composite material, the tension being equal to or greater than the maximum tensile stress to which the material is intended to be subjected during use. In an example, a cotton or artificial silk fabric is impregnated with a phenol-formaldehyde resin dissolved in methylated spirits or acetone by being drawn through a bath over suitable rollers. The impregnated fabric is then dried and stretched on a frame having one or more movable sides to which a load is applied by means of weights or turnbuckles. A stress of 2000 lb. per sq. inch or more is applied to the fabric and is maintained while the fabric is pressed between hot plates to harden the resin. In some cases the tension may be imparted to the reinforcement by twisting it or by working the composite material while plastic. Tensile stresses of varying amount may be applied to different parts of the reinforcement or in different directions. The reinforcement may be of paper or felt as well as fabric or strands.
GB304036A 1936-01-31 1936-01-31 Improvements relating to the manufacture of material and articles from resinous substances Expired GB470331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB304036A GB470331A (en) 1936-01-31 1936-01-31 Improvements relating to the manufacture of material and articles from resinous substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB304036A GB470331A (en) 1936-01-31 1936-01-31 Improvements relating to the manufacture of material and articles from resinous substances

Publications (1)

Publication Number Publication Date
GB470331A true GB470331A (en) 1937-08-03

Family

ID=9750800

Family Applications (1)

Application Number Title Priority Date Filing Date
GB304036A Expired GB470331A (en) 1936-01-31 1936-01-31 Improvements relating to the manufacture of material and articles from resinous substances

Country Status (1)

Country Link
GB (1) GB470331A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673546A (en) * 1949-01-29 1954-03-30 Dan River Mills Inc Apparatus for treating impregnated yarn
US2679088A (en) * 1949-05-05 1954-05-25 Goodyear Tire & Rubber Method of treating thermoplastic web
US2939179A (en) * 1957-06-21 1960-06-07 Magee Carpet Co Method of molding a carpet
US3047444A (en) * 1955-07-15 1962-07-31 Kimberly Clark Co Non-woven fabric and method of making the same
DE1222647B (en) * 1956-12-05 1966-08-11 Detag Panel-shaped component
US3857751A (en) * 1971-11-15 1974-12-31 Tufdura Ltd Composite sheet capable of withstanding impingement by particulate materials

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673546A (en) * 1949-01-29 1954-03-30 Dan River Mills Inc Apparatus for treating impregnated yarn
US2679088A (en) * 1949-05-05 1954-05-25 Goodyear Tire & Rubber Method of treating thermoplastic web
US3047444A (en) * 1955-07-15 1962-07-31 Kimberly Clark Co Non-woven fabric and method of making the same
DE1222647B (en) * 1956-12-05 1966-08-11 Detag Panel-shaped component
US2939179A (en) * 1957-06-21 1960-06-07 Magee Carpet Co Method of molding a carpet
US3857751A (en) * 1971-11-15 1974-12-31 Tufdura Ltd Composite sheet capable of withstanding impingement by particulate materials

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