DE1685176A1 - METHOD OF MANUFACTURING A MATTRESS - Google Patents

Description

Dipl.-Ing. August Bosharf Dipl.-Ιπσ. Walter Jackisch ι e q c ι 7 e Sponsorship I 0 O 0 I / O

Pateniortwätle Stuttgart-N, Μβηζβΐιίταβ 46

Thank God Gussmann South German bolster factory

Pleidelsheim Krs »Ludwigsburg

Aug 17, 1917

A 29 787 - see

Method of making a mattress

The invention relates to a method for producing a Mattress in which a spring core is provided with a foam cover.

It is known j spring cores of mattresses with a two-part! gen foam hood to clad, which is cut to size before cladding the innerspring as a settlement and then is glued. The disadvantage of this method is that it is very cumbersome and expensive. Further the adhesive points of the foam cladding are relatively susceptible to damage.

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The invention is based on the object of a method of the type described at the outset to create a simple and complete covering of a spring core Guaranteed in a short time. It should also be possible be »in a simple way or in a work course with oW cladding of the spring core on this cladding a cover »such as a fabric cover, to attach. The mattress should be easy to reinforce in particularly stressed areas.

In a method for making a mattress, at a spring core with a foam cover is provided, the prefabricated spring core is according to the invention in a foaming process with an in closed casing made of polyester, polyether or a similar soft foam. »As a result, that the foam layer is directly on the innerspring The inner spring can be clad very quickly take place. The spring core itself forms the inner shape of the cladding so that it is accurate after manufacture is appropriate. Furthermore, according to the invention The casing is made completely seamless, which makes it very strong even with a small thickness Has.

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The method according to the invention can be implemented very easily perform if the spring core is covered with a textile cover before foaming the foam layer, Plastic or the like is provided for each Case is avoided that the foam layer between the springs or their coils can be lengthened. In certain cases, however, it can also be advantageous » the foam layer is poured out directly onto the outside of the spring core without the use of a cover.

In a further embodiment of the invention, the prefabricated spring core is provided with the casing in a closed foam mold so that the outer shape of the casing is precisely predetermined .

409886/0001

An advantageous embodiment of the method results in particular »if the innerspring before the Foaming of the casing was provided with a cover, since this cover, which is formed, for example, by a textile fabric, with the foam material enters into such an intimate and firm connection, whereby the air trapped in the spring core during the Foaming process can escape. This air core then forms during the further Foaming process creates a counter pressure against the foaming = pressure. The air core formed in this way is therefore during the manufacture of the mattress or during the foaming " Process very beneficial.

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In certain cases it is advantageous to use the edges of the Mattress with one designed, for example, as a visible edge Reinforcement to provide · This reinforcement is in accordance with a further feature of the invention in the form A reinforcement fabric or the like applied, which connects intimately with the soft brow. " ,Through this Reinforcement can be made in certain edges of the mattress

shape «
easier way than constantly? edges are formed.

Textile fabrics, wire fabrics, plastic fabrics, wooden or metal parts are particularly suitable for reinforcement.

According to a further proposal according to the invention is a Überzugßohlcht for the spring core, such as a Textile fabric, inserted into the foam mold and then

the spring core is encased in it with the soft foam layer, the coating layer firmly with the

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Soft foam layer is connected · This allows in one Operation of the innerspring with both the casing as

also with the leg mattresses: common cover or upholstery fabric layer, such as a drill hole.

The top layer is held non-slip because of the firm connection with the soft foam lining the reinforcement points are also with this cover | covered with the inserted fabric "

Thus, the coating layer of the foam can be adjusted accurately, it is _o applied with a pressurized gas filling against the inner wall of the foaming mold this gas filling is zweekmässig deducted in the filling of the mold with Weiohschaum in one of these corresponding degree.

According to another Merkel of the invention, the Soft foam layer on the seldom of the spring core is thicker and / or thinner than on the two large areas of the spring core, the spring core, for example, a height of 7 * 5 cm, the soft foam layer at the top and bottom a height of about 3om and the WeichsohauBschioht on the sides can have a thickness of about 2 cm »The thinner side parts of the

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Soft foam layers have a higher level of space * during the foaming process and become stiffer, so that a side reinforcement and thus an increase in the dimensional stability is achieved.

The method according to the invention is not only suitable

.also format parts, such as for the production of mattresses, but ^ of upholstered bodies, such as car seats or the like in general.

The invention is described below with reference to the in Drawings illustrated embodiments explained in more detail »It is shown in

1 shows a mattress produced in a foam mold in cross section,

Flg. 2 another exemplary embodiment of an inventive mattress "

Flg. 2 shows a section of the spring core. inventive mattress in plan view «

Flg. 4 shows a section of the vegetables in FIG. 1 in perspective Depiction"

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Flg. 5 another embodiment "one Pederkernes in a representation according to Flg. 3 *

Like Flg. 1 shows a spring core 24 with a Cover 25 provided, which is formed for example by a cover made of nettle, jute or the like "kmn" In this form, the innerspring 24 is in an outlet form 26, which consists of two mold halves 27, 28, attached arranges, wherein between the inner surface of the foam 2 $ and the outer surface of the cover 25 a Gap 29 is provided on all sides, the height of which corresponds to the predetermined height of the barn layer of fabric. The spring core 24 is therefore floatingly mounted, this floating mounting by pins or the like. Distance means can be achieved. In the closed Mold halves 2 ?, 28 is then over one or more Zuftihrkanäle 30 the material to be broached.

* killed and immediately killed; the spring core 24 out sohäuot, so that this on its surface with a self-contained foam layer is provided

t
During the first attempts at foaming for mattresses with a spring core

has shown that the textile fabric, which surrounds the spring core, with the foam material one

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intimate and firm connection that the im

The spring core trapped during the foaming process creates an airtight seal finds, so that an air core is formed which during the Schäunxvorganges a counter pressure against the foaming pressure when foaming forms such that an undesirable Compression of the innerspring prevents so that Form-fitting and flawlessly shaped foam bodies are created in which the spring core is firmly embedded.

In Fig. 2 is a further embodiment of a mattress with a preferred size ratio between the spring core 24a and foam liner 32 is shown. At the Obersfce and the underside has the foam layer 32 each have a thickness which is only slightly smaller than half the height of the spring core 24a. The side Parts 33 of the Schaunflboffschicht 32 are on the other hand only slightly thicker than a quarter of the height of the spring core 24a, but these lateral parts 33 are larger Have density and thus greater dimensional stability.

oh On the edges of the mattress are in the foam foam

32 reinforcements 34 in the form of textile fabric or the like.

forraembedded so that the hat has stiff edges.

Oils entire foam layer 3 ² is provided with a coating 35, the inner surface of which is firmly with over the entire surface

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the foam layer 32 and possibly with the reinforcements 34 is connected.

As shown in FIGS. 3 and 4, the spring core of the mattress according to FIG. 2 consists of in its longitudinal direction Arrow 3 and its transverse direction arrow 4 side by side arranged springs 1, which have an angular shape in plan view of the spring core 4. The springs are in Cross direction arrow 4 of the spring core In rows 5 arranged side by side «while running lengthways Arrow 3 of the spring core in rows 6, 7 one after the other are appropriate.

The individual springs are indicated by arrow in the transverse direction, 4 running filler wires 8 to 10 and in the longitudinal direction Arrow 3 extending filler wires 11 to 13 with each other tied together.

As FIG. 4 shows, the outermost spring coils 14 are located

the springs 1 in parallel to the plane of the spring core

Levels, these outermost coils through each

three legs 15 lying approximately at right angles to one another to l6 are formed. The next two "to each other the outer spring coil 14 connecting leg i8,

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are inclined to the level of the spring core, the see subsequent leg 20, 21 of spring 1 again lie in a plane parallel to the plane of the spring core. The. Inclination of the legs 18, 19 is like this chosen that the distance between the legs 20, 21 or 16 in the longitudinal direction of the spring 1 lying parallel to the plane to the | Eederkern is approximately equal to the length of the legs 15 or 16 or 19 or 18 or 20 or 21, respectively. In the embodiment shown in the drawings, the legs 15, 16 and 20, 21 are in four parallel planes one above the other.

Cross section through the rectangular 'of the springs in connection with their outermost coils, each lying in a plane parallel to the plane of the spring core after foaming the casing> 2 a very great dimensional stability of the spring core and, if necessary, a firm connection between the foam casing and the spring core 24a.

The two end legs 17 of each spring 1 run to The center of the spring core is inclined so that the foam cover 32 and the cover 25 are not can be damaged.

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Like fig. also shows the springs 1 are in plan view seen essentially trapezoidal, with two each Leg 15 «16 or 20» 21 at right angles and the two opposite legs 18, 19 are at an angle of slightly less than 20 ° to each other.

The springs 1 in the longitudinal direction arrow? des Federkernesjerstreokenden spring rows 6, 7 are in the respective Rows 6 and 7 arranged in a corresponding position. The springs 1 in the transverse direction arrow 4 of the The rows 6, 7 of adjacent rows 6, 7 extending in the longitudinal direction of arrow 5 are each rotated by 90 ° arranged to each other in such a way that, for example, the spring end legs 17 of these adjacent rows 6 or » are rotated by 90 ° to each other. The springs each extending in the longitudinal direction arrow 3 of the spring core Row of springs are therefore arranged in the same position,) however to the springs of the adjacent row of springs Rotated 90 °. As a result, the legs of two adjacent rows of springs, which run parallel to the plane of the spring core, lie directly next to one another, with the legs 15 and Ii lying in a straight line one behind the other are connected to one another by filler wires 15.

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such that geraäss FIGS. 5 and 4 each have two filamentary wires 15 are right next to each other. Through this it is achieved that the legs 15, l6 of the neighboring Rows of springs to pivot towards each other when the springs are loaded and can therefore support each other «

Furthermore, it is achieved by the design described that the filamentary wires on the The entire extension of the spring core includes rectangles of the same size, each roughly corresponding to the floor plan correspond to two springs, so that a very uniform structure and thus a uniform Spring action and a uniform load on the cladding 52 result. The longitudinal central area of the Spring core is reinforced by the filler wires 15 lying next to one another in pairs, so that in the middle area ensures sufficient spring force of the spring core 1st. The asymmetry of the Springs is canceled out by the twisted arrangement of the individual springs with respect to one another.

The springs 1 are arranged so that in the longitudinal direction arrow 5 and in the transverse direction arrow 4 of the spring core each leg 16 or 20 and 15, 16 or 21, 20 in

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- l4 -

straight line and plane parallel to the plane of the Spring core lie one behind the other. Around these legs of the springs 1, which lie one behind the other in a straight line the helically bent filler wires 8 to are wound. In the edge area 2 of the spring core are the outermost turns 14 with each other via two filamentary wires 8, 9 and 11, 12 running in the same direction connected »which results in additional stiffening of the innerspring edge 2.

Instead of reinforcing the spring core feeder 2 with the help two or more filler wires 8, 9 or 11, 12 can dor the edge area 2 of the spring core also by one or several flat steel frames 22 are reinforced according to FIG. 5, the edge springs lying in the edge area attached and preferably embedded in the foam envelope 1st.

The ends 2? of the pilier wires 8 to 13 are each unbent at right angles and around the legs of the corresponding ones that form the edge region 2 of the spring core

Wrapped springs 1.

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The soft foam can be on the cover 25 of the Spring core to be foamed that he with the Abdeokung enters into such a connection that this Blickicht a great strength, especially against Has wear. There is therefore an intermediate layer between the spring core and the actual soft foam layer designed, which guarantee a secure support on the spring core & eto

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Claims (1)

Expectations 1. A method of manufacturing a mattress, in which a spring core is provided with a covering made of foam is, characterized in that the prefabricated innerspring £ 0 in a Ausäumvorgang with a self-contained casing (52) made of polyester, polyether or a similar soft foam "is provided. 2ο method according to claim 1, characterized in that the spring core (24) before the foaming of the foam layer (52) in a known manner with a Cover (25) made of textile, plastic or the like. Provided v / lrd. 5 · Method according to claim 1 or 2, characterized thereby. shows that the prefabricated innerspring (24) is provided with the casing (52) in a closed foam mold (26). 409886/0001 BATH ORIGINAL 4. The method according to any one of the preceding claims., characterized in that on the spring core or in or on the Umkleüong f | j52) partially for example a reinforcement, such as a reinforcing fabric (3 ^ ·) or the like. Attached and this reinforcement then intimately connected with the Weichsehauraumklmeldung (32) will. 5 "Method according to one of the preceding claims, characterized in that an over pulling slide (35) for the mattress «like a textile fabric into which Foam mold is inserted and then the spring core is covered in it with the soft foam lining (32), wherein the Uberzugssohicht (35) firmly with the soft foam casing is connected. 409886/0001 BATH ORIGINAL Method according to Claim 5, characterized in that the covering layer (35) is under pressure standing gas filling against, the inner wall of the foaming mold is created. 7 "Method according to claim 6" characterized in that when the mold is filled with flexible foam, the gas filling is removed to a corresponding extent. * is pulled. 8. The method according to one of the preceding claims, characterized in that the welch foam clothing (32) on the sides (33) of the spring core (# 24a) is made thicker and / or thinner than on the two large surfaces of the spring core (24a). c According to the method according to claim 1 or claim 1 Un one or more of the following claims produced mat with an interconnected Springs existing spring core and Ddt a soft foam Covering, characterized in that the springs (1) of the spring core viewed in their longitudinal direction have quadrangular coils, the outermost coils (14) at least partially parallel to the plane - 4 -409886/0001 BATH ORIGINAL lie to the level of the spring core and that in the longitudinal direction (arrow 3) and / or width direction (arrow k) of the pedar core are approximately in a straight line one behind the other (15 bK ·. 21 or 20 or 15 »16 or« 20, 21) of the peder coils are at least partially attached to one another with helically bent filament wires (8 to 15). XO. Mattress according to claim 9, characterized in that the springs (1) viewed in their longitudinal direction are trapezoidal. Il _m mattress according to claim 9 or claims 9 and 10, characterized in that the outermost coils (14) of the springs (1) lying plane-parallel to the spring core are formed by three legs (15 to 17) lying at an angle to one another 12. Matraz ^ e according to one of the preceding claims, characterized in that in the longitudinal and / or width direction (arrow 5 or arrow 4) of the spring core adjacent springs (1) are each arranged rotated by 90 ° to each other. 409886/0001 _ΟΙΜΔ1 ORIGINAL 13 * mattress according to one of the preceding claims, characterized in that the ends (17) of the spring wire of the springs (1) are inclined towards the core center Hh get lost. Ik. Mattress according to one of the preceding claims, characterized in that the legs of the edge springs forming the edges (2) of the spring core are connected to one another by two or more filler wires (8, 9 or 11, 12). 15. Mattress according to one of the preceding claims, characterized in that the parallel to the spring core plane edges (2) of the spring core by a at least on the outermost spring coils (14) of the Flat frames (22) made of steel or the like, fastened with edge springs, are formed. 409886/0001 8AD ORIGINAL