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Патент USA US2405423

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Filed July 31, 1940
Patented Aug. 6, ‘1946
William F. Hayes, Detroit, Mich. 7
Application July 31, 1940, Serial No. 348,875
3 Claims. (Cl. 154-44)
This invention relates to a novel and improved
laminated ?ber board, and particularly pertains
to ?ber board provided with a decorative face and
having thermal insulating as well as sound dead
ening qualities. The laminations are adhered
with waterproof adhesive material, thereby seal
the adjacent base sheet and showing the ad
Fig. 2 is an enlarged cross-sectional view on
line 2--2 of Fig. 1;
Fig. 3 is a fragmentary perspective View of a
trunk structure and its till showing a laminated
ing the board against penetration of water and
structure, embodying the invention, lining the
trunk and its till; and
moisture into the'interior structure between the
Fig. 4 is a fragmentary perspective view of a
exposed facing sheets. The face of one exposed
lamination may be embossed with elevations and. 10 motor vehicle body, showing a laminated struc
depressions or otherwise treated to provide a ?n
ture, embodying the invention, covering the back
ished decorative face, and the rough texture of
the decorative lamination is preferably carried
of the seat.
Referring to the drawing in which like numer
als are used to designate like parts, numeral I is
through its thickness to the underside surface so
that the adhesive therebeneath employed for se 15 a laminated ?ber board composed of base sheets
2 and 3 adhered together by a hardened water
curing the decorative lamination may ?ll the de—
proof coating ll, such as asphalt or the like, and a
pressions and thereby preserve the elevations and
decorative facing sheet 5 adhered to one of the
depressions in the exposed side of the ?nishing
base sheets by a hardened waterproof coatingli.
lamination. The ?nishing sheet may be painted
The base sheet 3 is preferably cellular and po
on its exposed face in addition to the emboss 20
rous, typi?ed by some such material as felt or
ments. The outer layer on the side opposite to
loosely felted paper which is used as foundations
the ?nish layer is of the character of felt and un
in the manufacture of bituminized paper, fabrics,
saturated to provide for insulation. It is prefer
asphalt roo?ng, and the like. It may be of any
ably indented to give increased qualities of in
sulation. The core sheet or sheets are felt coated 25 desired thickness. Being cellular and porous it
may be saturated with a hardening waterproof
with bituminous or other suitable waterproof ad
adhesive or left unsaturated to provide for in
hesives. The adhesive coating next to the in
sulation but in either event builds up a laminated
dented felt which is on the face opposite to the
composite structure of greater thickness with no
decorative ?nished sheet also preferably ?lls the
depressions, if the felt be indented, to preserve 30 increase in weight over a more densely felted
sheet when sandwiched between facing sheets 2
the indented structure.
and 5. The hardening saturant or coating water
The invention is generally typi?ed by a lami
proo?ng adhesive provides for -a substantial ri
nated or composite structure comprising an em
gidity to make the composite laminated sheet
bossed ?nishing sheet of thin tough ?brous mate
rial, such as kraft paper, and two or more founda-.
more or less board-like in character although
tion sheets.
being su?iciently ?exible to be bent in applying
The foundation sheets are cellular
same around curved surfaces which are to be
and porous to provide for thermal insulation, and
covered. The exposed foundation sheet 2 may be
the undermost foundation sheet which is the ex
indented to provide elevations 1 and depressions
posed face opposite to the finish layer may be in
dented. The core foundation sheet or sheets be 40 8. The elevations in one side of the sheet are
opposite to the depressions in the “other side of
tween the facing sheets are saturated and coated
the sheet, and the elevations and depressions are
with a hardening waterproof adhesive to render
formed in'the sheet while same is being molded
‘7 them substantially rigid and give a board-like
character to the composite laminated structure. 45 so that they are permanent and will not be
pressed back in place.
While the composite laminated structure is sub
thin tough
stantially rigid and board-like, it is suf?ciently
paper, such as kraft, and is advantageously pro
?exible to be bent around corners and applied to
vided with separate small elevations 9 and depres
cover rounded surfaces.
sions 10 generally referred to as indentations.
For a better understanding of the invention 50 The indentations in one side are opposite to the
reference may be ‘made to the accompanying
elevations on the other side, and are molded in
drawing in which:
the sheet at the time it is formed on the felting
Fig. 1 is a face view of a portion of a laminated
sheet, embodying the invention, having part of
A ?nishing material H, such as Pyroxlyn or
the decorative embossed sheet turned back from 55 the like, can be applied to the exposed face of
the embossed sheet. The Pyroxlyn not only pro
vides a ?nished decorative side but protects the
sheet against scu?ing or roughening of the ?bers.
The coating is applied in a thin layer, conform
indented sheet. The fact, however, that the sat
urated sheet is alternately laid with an unsatu
rated sheet functions to break up the transmis
sion of sound and prevents rumbling and vibra
ing with the irregular surface texture of the in
dentations and elevations, and is relatively hard.
While one embodiment has been described in
If the sheet 3 be saturated it is preferably satu
detail for showing a representative composition
rated with a relatively hard saturant to rigidify
board and some suggested uses, it is understood
that there may be various changes without de
the sheet.
The rough texture of the facing sheet prefer 10 parting from the spirit of the invention.
ably carries through its thickness to its under
I claim:
1. A composite ?ber board comprising a plu
surface, and the coating 6 employed to adhere
the ?nish sheet is applied to conform to its
rality of loosely felted ?brous sheets, including at
undersurface and ?ll the indentations in order
least one sheet which is saturated and at least one
to permanently retain the indentations and ele 15 sheet which is not saturated with hardened ther
vations in the ?nishing sheet and prevent them
moplastic waterproo?ng material, adhered in
from collapsing when the board is being handled
superposed relation with a relatively hard ther
or is in use.
moplastic adhesive material, and a facing sheet
The composite laminated structure above de
adhered to an impregnated loosely felted sheet
scribed is adapted for many and various uses 20 by a relatively hard thermoplastic adhesive ma
wherever wood, leather, composition board, and
terial, said hard adhesive material associated with
other ?nishing materials are used. It is partic-'
the sheets rendering the laminated structure
ularly adapted for lining the walls l2 of a trunk
board-like in character.
or the tills [3 thereof, coveringthe backs of the
2. A composite ?ber board comprising a plu
front seats M of motor Vehicles or the interior
rality of loosely felted ?brous sheets adhered in
walls l5 of automobiles, particularly taxi-s. So,
superposed relation with a relatively hard ther
too, the composite board is suitable for lining the
moplastic adhesive material, one or more of which
trunk compartments, the dash, cab compart
sheets are and one or more of which sheets are
ments and the like in passenger and truck motor
not saturated with a hard thermoplastic adhe
30 sive material, and a facing sheet adhered to one
One or more of the sheets 3 may be included
of the saturated loosely felted sheets by a rela
between the decorative ?nishing layer 5 and the
tively hard thermoplastic adhesive material.
other foundation layer 2. The’; sheet or sheets 3
3. A composite ?ber board comprising a plu~
being coated on both sides with a relatively hard
rality of loosely felted ?brous sheets, including
adhesive render same substantially rigid and 35 at least one sheet which is saturated and one
board like, and even more so if also saturated
with a relatively hard adhesive. A light weight,
yet rigid, board is obtained.
If sheet 2 is indented, it can be more dense
and compact as the indentations would provide
the sound and heat insulating character. If not
indented, the sheet is‘ more loosely felted to pro~
vide numerous cells or pores throughout the felt
The composite structure is substantially rigid,
sheet which is not saturated with hardened ther
moplastic waterproo?ng material, adhered in
superposed relation with a relatively hard ther
moplastic adhesive material, and an indented
facing sheet adhered to one of the loosely felted
sheets by a relatively hard thermoplastic adhe
sive material, said adhesive adjacent the indented
sheet ?lling the indentations on the underside of
the indented sheet to a level above the elevations
between said indentations, thereby serving to pre?
combines therein sound and heat absorbing quali
serve the indentations on the exposed side of the
ties. The saturated sheet to some extent absorbs
heat, but not to the extent of the loosely felted or
facing sheet.
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