DE2035965A1 - Method and device for manufacturing the main body of a tampon for menstrual hygiene - Google Patents

Description

DR. ELISABETH JUNG PR. VOLXSB -VOS-ai.US

'DR. 30Ρ.3Ξ:! CCHiSDEVVAHN

PATUNTÄii'.VSlTE S Munich 23, C!: Ncnsstf. M.

Phone: 341047

Munich, July 20, 1970

u.z .: F 435 M + a (Ra / Dr.S / Ra)

AKIRAYAMAUCHI, 121, Tatsumachi, Sasäyama-cho, Taki-gun, Hyogb-prefecture, Japan

"Method and apparatus for making the main body of a Monthly hygiene tampons "

Priority: July 19, 1969 Registration No.: 57301/1969 '·. «■ ..'.

The invention relates to a method and an apparatus for manufacturing the main body of a tampon for menstrual hygiene by compressing a fiber material.

According to a conventional method of manufacturing the main body of a sanitary tampon from a fiber material? al, e.g., absorbent cotton, the fiber material has become common

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in cylinder form by applying uniform external pressure in pressed together in radial directions by means of various pressing tools.

However, such a method is not satisfactory in that when it is difficult to form a fiber body with a smooth surface because a part of the material is uncompressed channel-shaped remains on the surface "of the compressed material along the connecting lines of the molded parts. In addition, tends the product obtained in this way, due to the difficulty of causing a complete compression up to the core area of the tampon, to deform, and if such a tampon is saturated with menstrual fluid while wearing, it swells while maintaining its circular cross-sectional shape. The inevitable incomplete attachment to the vaginal wall therefore causes the liquid to seep through, so that an uncomfortable feeling is caused in this area of the body.

In contrast, the invention is based on the object of designing a main body of a tampon for menstrual hygiene in such a way that, when saturated, it can be deformed into an elliptical or spindle-like shape, the cross-section of which adapts to the cross-sectional shape of the vagina, so that the tampon is extremely effective and is convenient to carry. ,

The object is achieved according to the invention in that a Fiber material around a thorn-like abutment to form a wad. is folded that the fiber ball from opposite sides

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is laterally compressed, and that the fiber body obtained is then in the transverse direction to a cylindrical Fiber body is compressed.

The invention offers the advantages that the main body of such a tampon extends from the surface layer to the core area is completely compressed and is therefore least likely to flake or deform before absorbing liquid tends, and that the surface of such a tampon is smooth and without edged projections is what makes surface coating easier. ■

The cylindrical fiber body can be pressed together further in the axial direction by an upper and lower press mold, the cylindrical opening formed by the laterally acting compression molds and the transversely acting compression molds are introduced will. The main body of the tampon obtained can therefore, due to the separate implementation of the first and second compression processes to a ii cross-section elliptical or spindle-like Reshape shape when it becomes with menstrual fluid while wearing soaks up. This ensures a tight fit to the vagina, preventing the fluid from seeping through is prevented.

The invention is illustrated below with reference to schematic drawings explained in more detail using an exemplary embodiment.

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Show it: '

■ Fig. 1 is a perspective view of the fiber material of a Tampons before squeezing;

Fig. 2 is a perspective view of a device by means of which one of the main bodies is to be formed from the material;

Fig. 3 is a partially horizontally sectioned plan view showing the fiber material after the first compression process represents by means of movable, laterally acting dies;

4 is a partially horizontal sectional plan view showing the fiber material after the second compression process by transverse compression molds following the first compression process; and

5 is a partially vertical sectional view with a section along the center line of a compression mold assembly. a third compression process performed by this compression mold assembly with pressure rods represents.

The main body of the tampon according to the invention consists of rectangularly cut fiber material and a pull thread 2 fastened to it by interlocking or stitching (cf. FIG. 1). The fiber material provided with the pulling thread 2 is then folded lengthwise to form a roll ₉ so that a fiber ball la is obtained, in which one is to be described in the following

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bender mandrel or abutment 7 before being pressed together by the The molding device shown in Fig. 2 is introduced.

The molding device consists of two laterally acting molds 4, 4, which can be moved on guides 3, 3, two transversely acting molds 5, 5ι each having a concave recess with a semicircular cross-section at their inner end and on the inner surfaces of the lateral molds 4, 4 are displaceable when the latter are brought close together, and upper and lower dies 6, 6 ', which are inserted into one of the side dies 4, 4 and the transverse dies 5 | 5 formed cylindrical recess fit. As will be described below, the upper mold 6 is designed with a recess for the insertion of the dome 7, while the lower mold 6 ^{1 has} a semicircular recess at its end opposite the underside of the upper mold 6 * are pressure rods for the respective molds denoted by 9 and ¹ IO.

An important feature of the invention is the mandrel 7 to be provided with an elliptical cross-section, which is introduced coaxially into the center of the Fäserbausches la. The thorn ^ is there arranged so that its longer diameter is parallel to the side wall the laterally acting mold 4 is provided and its upper end 7 'protrudes outward. Even if the mandrel 7, how already described, can be introduced into the fiber ball la before the compression, the intended results are then

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scored if he did at least before the second, in the following still to be described compression process is introduced.

The movable, laterally acting ' Molds 4, 4 first moved towards one another, with the fiber ball la arranged between them from opposite one another Sides is pressed together while the mandrel 7 is in between, whereby one has a columnar body Ib with almost rectangular cross-section (see. Fig. 3). Then the transversely acting dies 5, 5 are actuated..The body Ib is now pressed into a cylindrical body Ic by the compression molds 5 »5 sliding on the inner surfaces of the lateral compression molds 4 (cf. FIG. 4). During this process the fiber material becomes between the mandrel 7 and each of the transversely acting dies • 5, 5 pressed together so that its density is very much greater than between the laterally acting molds 4, 4. As a result a special effect is achieved in that the swollen during wearing by the absorption of menstrual fluid Tampon is deformed elliptically or spindle-like to adapt to the formation of the vagina, so that a tight contact with the wall the vagina and thus the seepage of menstrual fluid reliably avoided and an uncomfortable feeling while wearing is also significantly alleviated.

The cylinder obtained by the second compression process Rische body Ic is shown in Fig. 5 by the upper and lower. right die 6, 6 * also pressed together in the axial direction,

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so that a short main body Id of the tampon is created. In order to bring about this compression, the upper die 6 and the lower die 6 'are moved towards one another, whereby they are in sliding contact with the wall of the cylindrical recess, which is formed by the laterally acting dies 4, h and the transverse dies 5, 5 is formed} the upper end 7 * of the dome extends through the recess β of the upper die

Alternatively, however, the third compression process to be carried out by the upper and lower mold 6, 6 *, as described, can also be omitted by providing fixed molds which form the upper and lower ends of the cylindrical Body Ic during the from the transversely acting dies 5, 5 performed second compression process should limit. Such a press phone arrangement also ensures an im essential effective compression.

After removal of the mandrel 7, an independently produced rod can be inserted into the cavity formed by the mandrel 7 when the tampon is to be inserted into the vagina; this makes it easier to insert the tampon into the vagina. The cavity, which has an elliptical cross section, is also used to indicate the direction in which the tampon swells particularly strongly.

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An s ρ r U c h e:

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Claims (7)

A η s ρ r U ch e: Process for the production of the main body of a tampon for monthly hygiene by compressing a tuft of fiber, thereby g e k β η η ζ ei c h η et that a fiber material around a thorn-like abutment (7) is folded into a wad (la), that the fiber ball (la) from opposite sides from the side is pressed together, and that the fiber body (Ib) obtained then in the transverse direction to a cylindrical fiber body (Ic) is compressed. 2. The method according to claim 1, characterized in that the obtained cylindrical fiber body (Ic) with the dornartlgem held The abutment (7) is pressed together in the axial direction will. 3 «Method according to claim 1 or 2, characterized in that« that the fiber wad (la) is provided with a pull thread (2). ■ w 4. The method according to any one of claims 1 to 3, characterized in that that the fiber wad (la) is additionally compressed axially, preferably after it has been radially compressed will. - Q - 003886/1584 5. Device for carrying out the method according to one of claims 1 to 4, characterized by a first pair of counteracting molds (4, 4), a second pair of counteracting molds (5, 5) which can be actuated after the first pair and which are transverse to the line of action of the first pair, preferably at right angles thereto, and a centrally arranged mandrel (7), to which the lines of action of the two pairs of compression molds extend approximately radially, and which has an outwardly protruding end. (7 ¹ ) has, 6. Apparatus according to claim 5, characterized in that the mandrel (7) has an elliptical cross-section, and that the second pair of dies (5, 5) transverse to the major cross-sectional axis, is preferably at right angles to the mandrel. 7. Apparatus according to claim 5 or 6, characterized by an additional pair of press molds (6, 6 ¹ ), the line of action of which follows the direction of extension of the dome (7), and a central recess (8) in the one (upper) press mold (.6) through which the mandrel (7) during the movement of the two dies 46, 6 '). this pair of press molds slides towards one another. 009886/1584 Blank page