Method of making molded shells for luggage

  • Inventors:
  • Assignees: Samuel Joseph Holtzman
  • Publication Date: May 03, 1967
  • Publication Number: GB-1067830-A


1,067,830. Injection moulding of luggage; laminates. S. J. HOLTZMAN. Dec. 10, 1963 [Nov. 1, 1963], No. 30887/65. Divided out of 1,067,829. Headings B5A and B5N. A method of making a concavely shaped moulded shell surfaced with textile fabric for luggage, comprises injecting a heated thermoplastic composition into a mould containing a preformed textile fabric conforming to the shape of the finished shell, the mould being maintained at a tempereture less than the injected material so that the plastic material is bonded to the surface of the fabric adjacent thereto, the exposed surface of the fabric retaining its normal texture and appearance. The thermoplastic composition may be polypropylene and the textile fabric may be cotton or other woven or knitted fabric or, preferably, woven polypropylene fibre. The fabric layer may be on one or both sides and is held in place during moulding by means of a U-shaped two-part clamp (50, 51) (Fig. 6, not shown). The clamps are received in recesses, as 48, in the two parts of the mould, the male portion A only being shown (Fig. 4) The two parts (50, 51) of the clamp C are releasably held together by spring plungers (94) (Fig. 8, not shown). Injection is effected through an opening 44, runners 46, 47, 62, 64 and gates 54, 56, 58, 60. Cooling fluid is circulated through a conduit 74.




Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)


Cited By (8)

    Publication numberPublication dateAssigneeTitle
    EP-0332899-A2September 20, 1989AlliedSignal Inc.Spritzgiessen einer mit Gewebe verstärkten Elastomermembran
    EP-0332899-A3October 02, 1991AlliedSignal Inc.Moulage par injection d'un diaphragme élastomère avec un renfort textile
    EP-0480153-A2April 15, 1992Gebr. Happich GmbH, Schade KgProcédé et appareil pour la fabrication d'un objet moulé en matière plastique
    EP-0480153-A3June 03, 1992Happich Gmbh Gebr, Schade KgMethod and apparatus for manufacturing a moulded plastics article
    GB-2169845-AJuly 23, 1986Oberlausitzer Stahl FahrzeugInjection moulding process for composite materials using a textile reinforcing element
    GB-2226521-AJuly 04, 1990Halrona Developments LtdInjection moulding gutter elements
    US-5326523-AJuly 05, 1994Gebr. Happich GmbhMethod for the manufacture of a plastic molded part
    US-5462422-AOctober 31, 1995Gebr. Happich GmbhApparatus for the manufacture of a plastic molded part