DE2040042A1 - Procedure for the production of foil material embossed on both sides, pair of rollers and machine for practicing the procedure and foil material made by the procedure - Google Patents

Description

Patent attorney

Ni 4649
21770

Nielsen oils

and
Max -Beidil

Copenhagen, Denmark

Procedure for the production of foil material embossed on both sides, a pair of rollers and a machine for performing the procedure, and foil material through the procedure prepared.

The invention relates to a method of manufacturing of foil material embossed on both sides by introducing output foil material through the gaps between two rollers, the surfaces of which are provided with protrusions in such a way that 3 a protrusion on each of the rollers in the column on all sides of protrusions on the other Roller is surrounded; and where each protrusion on a roller in relation to the peripherally closest protrusions is axially offset on the same roller, and where the projections alternate on the two rollers in the main Line lie in the axial direction.

From Danish patent specification no. 61292 a Verfahrungsweiae of the specified type is known. The protrusions are approximately hemispherical, and between ibJEBn Bind hemispherical depressions. Before the film material is introduced into the gap between the two rollers, β a is brewed to pass between a significant number of Y / roller pairs; which have round ribs and grooves, so that the material is grooved and has a smaller width. in the rollers with the projections and

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Wells the material is clamped between the top of a protrusion and the bottom of the corresponding well, and bumps are formed on both sides of the pile material. No material expansion or stretching of the source material takes place. This gives you a material that can be stretched on all sides.

One purpose of the invention is to provide a method of operation indicated manner by which a simpler and cheaper machine can be used.

Another purpose of the invention is to indicate a manner of operation of the type indicated, by which such Material distribution can be achieved that the sheet material has a significant strength and shock absorption capacity angularly gets on the plan of the Polienmaterial.

It is also a purpose of the invention to indicate a procedure of the type indicated, whereby one in treatment of paper and other fiber material can achieve a soft textile-like character.

The characteristic of the method according to the invention is that the embossing is carried out by stretching the foil material from each projection top on each roller to the surrounding projection stops of the other roller. This procedure can be carried out by means of a single pair of rollers and consequently a very simple and inexpensive machine. This procedure can, by and large, be carried out without any special pretreatment, such as, for example, moistening of the paper material. Furthermore , a separate material distribution can be achieved by using the straw, since the material has become thinner in the vicinity of the top, whereas

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it wholly or mainly its thickness in between has retained the "tops of the two sides" so that one is relative Great strength and shock absorption capacity is achieved. · If the procedure is on paper or If other fiber material is used, a soft, textile-like character can be achieved.

According to the invention, the embossing can be in such a manner be made so that the sheet material lying on each projection stopper is not touched by the other roller. Through this it becomes possible for the lOlie material lying on the top to move and stretch. This gives you an advantageous one Material distribution by making the material relatively thin on the tops protruding from both sides, whereas it is mainly its strength amidst the Tops the two sides has retained.

If the procedure is used with paper or other fibrous material, the elongated tops of the two become Pages have good moisture absorbency, making the material suitable for napkins or similar purposes will.

The invention further comprises a pair of rollers for performing the method of travel, and the characteristic of the pair of rollers loud The invention is that the projections have a mainly planar top surface and a marked * but rounded preferential passage to the side face have »This gives you a good • Holding the material during the embossing, i.e. a whole or partial closure of the material in position the cooperating projections on the awei rollers, so-. that you can do the intended stretching from the projection stops on

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of one roller as far as the protrusion stops on the other roller is achieved by a migration of the material during the initiation of the engagement between the two rollers is avoided.

The mentioned rounding must not be too big, because then a significant friction will arise during the embossing. the The top surface does not have to be completely flat, or more precisely, part of a cylinder surface, i.e. part of the surface the roller before machining the same for the formation of the tenons, but may possibly be slightly curved with advantage be upwards, but with a larger radius of curvature than the transition to the side of the pin.

According to the invention, the angle between the top surface and at least the upper part of the side surface can be over 90 G., This gives you support for the material in the diagonal direction from a top on one side during the embossing to a top on the other side, so a powerful question can be done without tearing the material.

According to the invention, the side surface of the projections can mainly have the shape of an unwinder, at least on upper part. As a result, the projections would work together in a manner similar to unwinding teeth in gears. One achieves a gentle treatment of the material so that a strong embossing can be made without distortion. The two Rollers can be placed in relation to one another so that they roll down under pressure from each protrusion stop takes place, whereby one gets a gentle treatment of the opposite side of the material protrusion when the roll protrusions here come into engagement with oin ^ ier.

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; The side surface can according to the invention like the side : surface of a gear wheel base with 20 G. pressure angle made stairs- ;: ) must be, at least on the upper part. It has been found to be particularly beneficial shown to use rollers with such projections.

■ In the case of a pair of rollers, where the projections are formed by ; parallel grooves are formed in two intersecting directions, according to the invention, at least one of the two directions can be inclined. This is how you get on

■ a simple way of the above-mentioned axial displacement of a Projections on a roller in relation to the peripheral ones closest protrusions on the same roller. Preferably the two directions are oblique, and preferably oblique

; at the same angle.

According to the invention, the angle between each of the two Directions and the axial direction less than 45 G-. be. It It has been shown that this is a more gentle treatment than with an angle of 45 G. According to the Invention, the angle can be between 38 G. and 41 G., preferably 38.5 G.

According to the invention, the size of the projection stop be smaller than the Hoho of the ledge. This gets such a relationship between the tensile stresses in the material area on the top surface and on the side surfaces that there is a significant stretching of the material on the top surface and gets on the upper part of the Soitenflachen. The size of the Tope in relation to the protrusion height can with advantage like at ordinary gears leg.

According to the invention, the two rollers can have the same diameter to have. This gives you an advantageous equality » like engagement from the two sides

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The drawing shows:

Pig. 1 shows a machine for performing the method according to the invention, schematically in vertical direction Length cut,

Fig. 2 the same in vertical cross section,

Pig 33 shows the section of a roller indicated in FIG. 1, on a larger scale and in processing,

Fig. 4 schematically shows a representation of the engagement between the two rollers shown in Fig. 1, and

FIG. 5 shows a section of the gap between the two rollers shown in FIG. 1.

In the . The machine shown in FIGS. 1 and 2 has two rollers 1 and 2, which are equal and divided into 5 sections in the lengthwise direction which are fixed on two shafts 3 and 4 in such a way that they cannot rotate. These carry gears 5 and 6 at one end, of which the gear 6 is divided into two parts which are rotungaeingestift relative to each other to accommodate play can. The shaft 3 is mounted in a frame 7 and through a sprocket 8 and a chain 9 and a sprocket IO connected to a gear motor 11.

The shaft 4 is mounted in slides 12 and 13, which can be moved up and down on the pillars of the Gostellea. Each of these carriages has a protruding spindle 14 "which is in engagement with a nut 15, and the nuts have external sonic con gear teeth which are in engagement with a spindle 16, which is mounted in the frame 7 and carries a handwheel 17, whereby the spindle 36 Zwooks rotation dor nuts 13 can be rotated, the unpredictable attached bind and therefore by the rotation the spindles 14 and thus; the soles 12 and 13 on ₍

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• and move down. This allows the roller 2 in relation to the fixed roller 1 can be set.

In Pig. 1 shows a surface area of the Y / alze 2. This area is shown on a larger scale in FIG. 2 in development, and it is added that preferably the whole Surface has the design in question, and this also applies to roller 1. The rollers are made from cylindrical workpieces in that under 38.5 G. grooves of a shape that corresponds to that used in the manufacture of screw-cut Gears used are milled. The intersection of the two set of grooves makes them almost pyramidal Formed before cracks where the sides preferably have the shape Tf ie for unwinder teeth with 20 G-. Have pressure angle. The transition between the almost flat top surface and the side surfaces is rounded off, as indicated in FIG. 5. Furthermore, the edges between the four side surfaces can be rounded.

During assembly, rollers 1 and 2 are positioned in relation to one another in such an angular position that each protrusion on one roller in the gap between the rollers between four projections of the other roller with the Corners close to the relevant corner of the four reels. This gives an engagement pattern as shown in Fig. 4, v / o the small compasses protrusions of one roller and the crosses Indicate before jumping the other Y / alze.

The Yifalzen are made to rotate, and flat web material is fed into the gap between the rollers. This results in an intervention as indicated in Fig. 5 »

In the embodiment shown, all teeth are the same, But there is no obstruction against the height and shape of teeth can vary, e.g. to achieve a special one

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Pattern effect. For example, it may be possible to make some of the projections with a relatively large surface area, what can be of importance if one wishes to glue a flat sheet onto the embossed product. The material likes Paper, fiber material, metal or thermoplastic molding material. In the embodiment shown, there are two sets Grooves at the same angle. But there is no obstacle to the fact that they are at different angles. Eventually one set of grooves can be in the axial direction and the other set of grooves can be inclined. The embossed product can be used for wrapping, either directly or with one or two flat arches glued on, for springy support and for many other purposes. If it is made of paper or fiber material, you get a cloth-like effect by adding the product is easily flexible in all directions. One prior treatment is usually not required. However, there is no obstruction against subjecting the material to such a treatment, e.g. dampening.

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Claims (15)

Claims. Procedure for the production of film material embossed on both sides by introducing the starting film material through the gap between two rollers, the surfaces of which are provided with cracks in such a Y / eise, that a projection on each of the rollers in the column is surrounded on all sides by projections on the other roller, and where each protrusion on a roll in relation to the peripherally closest protrusions on the same roll is axially offset, and where the projections alternate on the two rollers are mainly on line in the axial direction, characterized in that the Embossing by stretching the film material from each protrusion stop on each roller up to the surrounding protrusion tips before another roller is made. 2. mode of procedure according to claim 1, characterized GEK η η e ,, characterized in that the impression is made in such a manner that da3 applied to each projection stop film material is not affected by the other roller. ' 3. Pair of rollers for use in performing the Verfahrungswüise according to claim 1 or 2, characterized in that the PROJECTS A mainly flat top surface and one marked, but rounded transition to the side surface to have. 4. Walzönpaar according to claim 3 »thereby g e k ο η η ζ ο ic h-η ο t that the angle between the top surface and at least the oboron Toil of Seifconflä is over 90 g. 5. Walzonpurir according to claim 4, characterized β ο k ο η η ζ ei ο h no t , duao (Uo Soitonflä dor projection « in the main diu form oinoe unwinders, mlndootons dor obero great. 10 9 811/2041 ₁₀ 2040Ö42 6. pair of rollers according to claim 5 »characterized in that that the side surface is designed like the side surface of a gear tooth with 20 G. pressure angle, at least on the upper part. 7. pair of rollers according to one or more of claims 3-6, where the projections by designing parallel grooves in two intersecting directions are formed, characterized in that at least one of the two Directions is inclined. 8. pair of rollers according to claim 7> characterized in that the Y / angle between each of the two directions and the axial direction is less than 45 G. 9. Walzenpacir according to claim 8, characterized in that the angle between 38 G. and 41 G., preferably 38.5 G. is. 10. pair of rollers according to one or more of claims 3-9 _f, characterized in that the size of the projection stop is smaller than the height of the same. 11. Pair of rollers according to one or more of claims 3-10, characterized characterized in that the two rollers have the same diameter. 12. Procedure wholly or partially as described. 13. Walzonpaar completely or partially as shown or described. 14. Machine in whole or in part as shown or described. 15. Folion material in whole or in part as shown or described. for: Oils Nioleen and Max Beidil 10981 1 / 20A1