FR2489666A1 - Mfr. process for shoes - involves sewing upper into shape then putting it on last and bonding it to sole - Google Patents

Abstract

The process is for making shoes by making the upper and then fixing it to the sole. The upper is made by dropping the pattern of the upper squarely onto the mould, with notches in the punching machine to absorb folds at the toe. The toe and the counter, which are supple, are fixed by stitching or bonding and are then sewn to a band and the inner sole. The upper is put on a mould and the inner sole and the band are bonded round it, the sole is then bonded on this by heat and pressure.

Description

It - DESCRIPTION
a) Super flexible and super-relaxed shoes, including a
upper stitched on its first interior and a sole, followed
before the registered model.

b) The present invention relates to all manufacturing systems
tion of shoes: welded - sewn - injected - vulcanized
molded - twine, etc.
c) In known processes for manufacturing shoes,
has a large number of assembly operations:
end, rear, installation of the first assembly
end, rear mounting, side mounting, tear off
spikes or crampons for first display, carding, er
age, display - welding, milling, etc ...

Such operations require significant equipment and cc
teux with in addition, a specialized workforce and c
relatively large areas.

We also know the shoe manufacturing system
molding or injection of the sole, but which presents liii
This is a major disadvantage of using very expensive and inexpensive equipment.
therefore very difficult to amortize and which requires chc
frequent tool profile measurements due to the
11Mpde ".

d) The process according to the invention allows
1) avoid all machine assembly operations
traditional, except one, that of the press for welding
after display of the sole, hence a saving
aunt on equipment and labor.

Beforehand, the buttresses or thermo, or solvent
or shelled, can be curved, and possibly
then the shoes can be aged
to reactivate and fix the hard ends and the buttresses.

2) to save at least 20% of the surface area
there material of the rod quisertJ in tradi montages
welded soles over a width of 1 to
2 centimeters under all around the foot.

e) The system which is the subject of the invention consists in causing the pa
stem trimming exactly at the square edge, with what
ques notches in I 1pierces to absorb
the folds of the tip or of all other places of the assembly the born
ending.

The hard ends and buttresses should be flexible enough
for this kind of articles. However, tips can be used
and stiffer buttresses depending on the style of items.

The ends are laid in prick, either by thermo-bonding, by
bonding or any other process. The buttresses can be stitched,
thermo-glued, or glued. The set of ends and buttresses is
found caught by the tape laying and first laying bites.

 Then, stick a strip on its reverse side (if it has one).

It can be in crust or in any other material allowing a
bonding without carding; it is stitched edge to edge with the lathe
rod. This strip will have the width that we want to find
wrapped around the stem; a second bite is made
at the top of the strip to fix it with the rod.

Then we prick around the stem, the first one that can be used
both first assembly and first cleanliness.

The bite can be zig-zag, or made using a machine
STROBEL type or by jointing or traditional assembly.

At this stage of production, this part of the shoe is called
sour: the "STITCHED ROD"

To obtain a complete shoe, it remains to fix unt
sole under the stitched upper with the following operations:
- possible bending of the buttresses, thermo, or solv
or shelled.

 - thread a shape into the stitched rod.

 - transition to the necessary aging.

 - glue the first and the strip of the rod turn.

 - glue the inside of the sole and its rise.

- reactivate the glue after regular drying time
- display and welding of the sole with a press
appropriate.

 - form extraction.

 At this point, the shoe is completely finished.

f) The method of this invention can be used in all
types of shoes with or without raising the sole
around the foot and can adapt to all kinds of fabric
tion of shoes, such as: welded - sewn - injected
vulcanized - molded - twine - etc ...

Claims (1)

 III - CLAIM  "COUSU" process allowing the elimination of all so-called "ASSEMBLY" operations, other than curving, gluing and welding, charac  terrified by the fact that after the operations of the rod stitched on its first,  it only remains to carry out the fixing of the sole to obtain the shoe  complete.