HEAT-INSULATING PANEL OR SHEET AND A METHOD OF AND APPARATUS FOR MAKING THE SAME

• US 3,720,558 A
• Filed: 06/16/1969
• Issued: 03/13/1973
• Est. Priority Date: 06/16/1969
• Status: Expired due to Term

• Current Assignee: John Ian Menzies, Maureen Menzies
• Original Assignee: John Ian Menzies, Maureen Menzies
• Inventors: Menzies, John Ian, Menzies, Maureen
• Primary Examiner(s): Quarforth, Carl D.
• Assistant Examiner(s): Gaither, Roger S.
• Application Number:
  US04/834,241
• Time in Patent Office: 1,366 Days
• Field of Search: 156/182,200,201,210,233,235,324,199,269,301,306,309,202,205,207,222,223,267,269
• US Class Current: 156/199
• CPC Class Codes: B29C 63/00 Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor B29C73/00 takes precedence; by blowing B29C49/00; by thermoforming B29C51/00
• CPC Class Codes: B29C 65/02 by heating, with or without pressure
• CPC Class Codes: B29C 65/106 using flames coming in contact with at least one of the parts to be joined
• CPC Class Codes: B29C 65/44 Joining a heated non plastics element to a plastics element
• CPC Class Codes: B29C 66/1122 Single lap to lap joints, i.e. overlap joints B29C66/45, B29C66/472, B29C66/52272 take precedence
• CPC Class Codes: B29C 66/45 Joining of substantially the whole surface of the articles methods or apparatus for laminating B32B37/00
• CPC Class Codes: B29C 66/742 to metals or their alloys
• CPC Class Codes: B29C 66/8248 Pressure application by weights by the own weight of the joining tool B29C66/8282
• CPC Class Codes: B29C 66/83413 cooperating rollers, cylinders or drums
• CPC Class Codes: B29C 66/836 Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table B29C66/65 takes precedence
• CPC Class Codes: B29K 2995/0015 Insulating
• CPC Class Codes: B29L 2016/00 Articles with corrugations or pleats B29L2023/18, B29L2024/003 take precedence
• CPC Class Codes: E04D 3/35 Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation self-supporting roofing slabs laminated with layers of insulating material E04B7/22; insulating devices or arrangements in the roof covering E04D13/16; connecting, fastening of double roof covering E04D3/3608
• CPC Class Codes: Y10T 156/1007 Running or continuous length work
• CPC Class Codes: Y10T 156/1008 Longitudinal bending
• CPC Class Codes: Y10T 156/101 Prior to or during assembly with additional lamina
• CPC Class Codes: Y10T 156/1011 Overedge bending or overedge folding
• CPC Class Codes: Y10T 156/1016 Transverse corrugating
• CPC Class Codes: Y10T 156/1044 of parallel stacked sheets only
• CPC Class Codes: Y10T 156/108 Flash, trim or excess removal
• CPC Class Codes: Y10T 156/1084 : of continuous or running length bonded web

Abstract

A panel or sheet is insulated against heat from a heat source by a metal foil lamination bonded to, and separated from direct contact with, the surface of the panel or sheet remote from the heat source by an interposed lamination of transparent thermoplastic material, the bonding being effected by the application of heat and pressure.

Claims

1. A method of heat insulating a panel or sheet comprised of superimposed laminates of thermoplastic film material and metal foil bonded to said panel comprising the steps of:

a. simultaneously applying, to a surface of a moving panel, layers of a metal foil and a film of clear or transparent thermoplastic material, with the film being interposed between said panel and said foil so as to maintain said foil continuously out of contact with said panel, b. positioning a flexible sheet over the entire exposed surface of said foil on said moving panel, said sheet being longitudinally non-movable and assuming the surface configuration of said moving panel and layers. c. applying a continuous mass of deformable weight on the surface of said flexible sheet contacting said sheet against said foil thereby firmly pressing the entire surface of said foil and film layers against said panel, and d. heating said moving laminated panel to cause said thermoplastic film to adhere both to said foil and to said surface of said panel during the weight applying step thereby firmly bonding said foil to said panel.

2. The method of claim 1 wherein said panel or sheet is of galvanized sheet steel and said thermoplastic film comprises polythene approximately .00075 inches in thickness.

3. The method of claim 1 further including the step of applying said layers of metal foil and thermoplastic film material on said panel in a transversely offset manner so that said foil at one side of said panel serves to insulate said flexible sheet from the effect of said heating means, with both said foil and said film having exposed marginal portions at said one side which extend laterally beyond the edge of the panel, said thermoplastic film at the opposite side of said panel extending laterally beyond said foil, said film serving to space said foil from said associated surface of said panel throughout the width of said foil.

4. The method of claim 3 further including the step of cutting the exposed side marginal portions of said foil and said film downstream of said heating means.