GB663428A - Hollow plastic structural units and method of making the same - Google Patents

Hollow plastic structural units and method of making the same

Info

Publication number
GB663428A
GB663428A GB17995/49A GB1799549A GB663428A GB 663428 A GB663428 A GB 663428A GB 17995/49 A GB17995/49 A GB 17995/49A GB 1799549 A GB1799549 A GB 1799549A GB 663428 A GB663428 A GB 663428A
Authority
GB
United Kingdom
Prior art keywords
strips
tube
joints
resin
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
GB17995/49A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB663428A publication Critical patent/GB663428A/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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/583—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features
    • B29C53/584—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features having a non-circular cross-section
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
    • 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
    • B29L2007/002—Panels; Plates; Sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

663,428. Paper &c. tubes. GONDA, D. July 7, 1949 [July 7, 1948], No. 17995/49. Class 99 (ii) [Also in Groups V and VIII] Laminated tubes used in the production of hollow structural panels of a kind such as is described in Specification 546,089, [Group VIII ], are formed from helically wound strips of fibrous material e.g., paper, wood, veneer, fabric, impregnated with thermo-setting plastic material. Strips 11-15 may be wound with close butt joints to form continuously a multi-ply tube 16 which is advanced by a looped belt 17 using apparatus which may be of the form described in Specification 657,298. In order to ensure that the joints of successive superposed strips of each tube are spaced apart axially of the tube thus preventing superposition of joint crevices the strips are made successively wider to compensate for the effect of the increasing diameter of each winding relative to the adjacent inner one, the pitch of the joints being the same for all the layers. The resin with which the strips are impregnated is not in adhesive condition during the winding and an adhesive e.g., Scotch glue, which may comprise aqueous formaldehyde solution, or a watersoluble phenol or melamine formaldehyde resin which will not subsequently interfere with flow and curing of the resin is applied as bands 22 and 23, 24, on the strips 11 and 15 to secure the windings in position. Each tube is deformed by passage through rollers 25, 26, 27, 28 to have walls 16a - 16d which are initially bulged inwardly but afterwards spring out to form a tube of quadrilateral cross-section.
GB17995/49A 1948-07-07 1949-07-07 Hollow plastic structural units and method of making the same Expired GB663428A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US663428XA 1948-07-07 1948-07-07

Publications (1)

Publication Number Publication Date
GB663428A true GB663428A (en) 1951-12-19

Family

ID=22068879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17995/49A Expired GB663428A (en) 1948-07-07 1949-07-07 Hollow plastic structural units and method of making the same

Country Status (1)

Country Link
GB (1) GB663428A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234202A (en) * 1989-06-09 1991-01-30 Molins Plc Composite panel assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234202A (en) * 1989-06-09 1991-01-30 Molins Plc Composite panel assembly
GB2234202B (en) * 1989-06-09 1993-03-24 Molins Plc Composite panel assembly

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