CN1180329A

CN1180329A - Production of prophylactic

Info

Publication number: CN1180329A
Application number: CN 96193053
Authority: CN
Inventors: 托马斯·肖尔
Original assignee: Innovation and Art GmbH
Current assignee: Innovation and Art GmbH
Priority date: 1995-12-15
Filing date: 1996-12-15
Publication date: 1998-04-29

Abstract

A plunger tool for producing a special prophylactic is disclosed. The special features of the plunger tool reside in the special curvatures in its shaped section. The shaped section of the plunger tool exhibits an extreme narrowing, at the deepest point of which there may be at least one annular groove. Unlike prior art transitions, the transition from the large diameter to the reservoir section is not steep and straight but takes the form of an S-shaped curve. An exact contour of the annular grooves on the surface of the plunger tool is essential for their production and can be done only by the use of a precision diamond abrasive point.

Description

A kind of making of condom

The present invention relates to a kind made from shaping condom of particular curve, wherein significant, be the special shape of immersion mould on the one hand, be processing technology on the other hand.

The processing technology of such immersion mould and condom proposes in international patent application book WO95/25622 or DE 4409449 C1 already, and describes in detail.Make a kind of condom with this known immersion mould, this condom by a little long cylinder body and with S shape section and the termination that is closed of the liquid storing part that is connected with it constitute.Design a recess in advance, form the structure that constitutes by two truncateds cone that utilize little cover-up surface to be stitched together when it uses in the glans penis scope.Recess has the subtended angle of an angular range between 60 ° to 120 °.Known condom is immersed in a kind of latex solution by three times and makes.Pass a drying baker after in immersion process each time, when last immersion process finishes, use to make the known condom demoulding changeing hairbrush.

Also learn some similar technology and equipment in addition, particularly utilized modern technologies to adopt the natural rubber chemical compound to make thin moulded similar technology and equipment.

In all processing technology of known condom, because the difficulty that is shaped, the immersion mould will experience the immersion process three times.Specific part at the immersion mould has less radius of curvature, cause elastomeric material (latex) skewness that is coated on this small curvature radius, because this tested often root of finding crack or fracture defective, thereby can not satisfy the requirement of inspecting authorities to condom, when being shaped in this case, three times the immersion process is a particular importance.

Make condom and will rationally satisfy various high instructions for use very fit and easy to use, this all acquires a certain degree of difficulty in the ordinary course of things.Because this cause has people's basis technical level suggestion at that time once to take different shapes, and particularly adopts on the top of condom to solve current in-problem various difformities.This respect can be enumerated by the famous United States Patent (USP) PS 1,142,443 of technical level in 1967, is famous comprising this condom of a cylindrical shape part and a top shaped portion.The top shaped portion of this famous condom has a contraction flow region, and its configuration guarantees that it is enclosed within on the male genitals of erection reliably.But this condom does not have visible liquid storing part on the condom of current trend at an upper portion thereof.For this reason, now do not allowed to produce again such condom.

Another important shortcoming is that the radius of curvature of condom top contraction flow region is evenly to stretch at whole recess, thereby can not guarantee fully suitably to cooperate the dissection ratio of penis at all.

In addition, according to the austrian patent description that is numbered 123532, there is a kind of condom of making of rubber known nineteen twenty-nine, shaped portion at an upper portion thereof has a fastening portions (a), whole condom is made of two truncateds cone that utilize little cover-up surface to be stitched together, and wherein the splicing position of the truncated cone is smooth.But the shape of the immersion mould of showing in this patent specification, truncated cone have very significantly sigmoid curve in appearance, and it is problematic therefore a kind of like this condom being put to practical application.

According to CH96564, known have a kind of short condom that has bar-shaped liquid storing part, but must be attached on the penis of user.In CH97674, do not have to disclose and allow the people understand to cause compressive stress and tension to make bar-shaped liquid storing part reach the way of straight and upright user mode by special linear design.

The objective of the invention is to; the shape that utilization obviously forms on top is protected a kind of new-type condom; wherein the radius of curvature of each radius plays a decisive role on the precalculated position, roll all can the decisive influence condom with deployed condition internal compressive stress and tension.

Therefore, task of the present invention is to make a kind ofly to guarantee condom the most fit and safe handling.

By the feature that claim 1,2 and 8 is mentioned, solved task proposed by the invention.

According to the present invention, the characteristics that are used for making the immersion mould of condom are:

-immersion mould (1) is 15 to 25mm at the diameter (D5) of the stenosis of recess (6);

The radius of curvature (R1) of the stenosis (D5) of-recess (6) is 17 to 20mm;

-top is 50 ° to the subtended angle of the open truncated cone of liquid storing part (4) (9);

The subtended angle of-bottom the truncated cone (8) is 40 °;

-cylindrical body (2) arrives the intermediate location of the recess (6) in the shaped segment (3) to evagination, and its radius of curvature is greater than 25mm;

-be 45 to 65mm from recess (6) to the length overall that enters liquid storing part (4) population;

-be 33 to 35mm at recess (6) and the maximum gauge (D2) that enters the shaped segment (3) in the scope between liquid storing part (4) porch.

Wherein, minimum profile curvature radius, i.e. recess bending part the most very roughly is the centre at recess.Little sigmoid curve that stretches to both sides is arranged at the place of adjoining with this sweep, and representative utilizes the outer envelope of two truncateds cone that little cover-up surface is stitched together.

The characteristics of another version according to the invention have a cannelure at least near the recess, the minimum diameter (DS), form a ring at least like this on the condom of having made, the quality of the elastomeric material of its quality around it.Condom according to the present invention is there to be two such cannelures comparatively desirable, and its spacing is about 1.5mm.

According to condom of the present invention especially preferably be arranged in the upper end so-called liquid storing part, its shape by the present invention be the wooden club shape.Because according to the special circular curve and the scale ratio of liquid storing part of the present invention, this liquid storing part has and is remaining on characteristic straight and upright on the service orientation from meeting to sell after extracting out the packing that requires.Have only shaped segment to produce tension and compressive stress in condom inside by its linear design when condom, its action direction make liquid storing part on the service orientation with axis normal wherein during in the plane of the condom of rolling, condom this straight and upright characteristic of liquid storing part under roll-up state is only possible.

In addition, special linear design also has another advantage because of its smooth-going circular curve, and promptly in the immersion process in independent immersion pond, elastomeric material is evenly distributed on the immersion mould, the underproof weak part of condom can not occur often causing.

Characteristics according to the invention and being also advantageous in that, the transition region from the maximum gauge of immersion die forming section to liquid storing part are not precipitous with straight, but are a suitably arcual sigmoid curve downwards.

On the basis of the molding of immersion mould according to the invention design, the processing technology of condom according to the invention might be proposed, wherein, the immersion mould divides the surperficial angled immersion of immersion elastomeric material (latex) of two immersion processes and use wherein to rotate around its longitudinal axis.Each once is placed on the process of drying in the special drying baker to design code after immersion processes.

In the technology of making condom according to the present invention, the problem that also has an aspect, the immersion mould is polished on the cannelure surface by at least one dish type mustard gold emery bistrique exactly, grinding angle (α) is between 60 ° to 120 °, and wherein a passivation region is arranged at the top of corundum bistrique.This passivation region needs especially, and purpose is to make that processed cannelure does not have the sharp edge rib on the immersion mould upper surface, because elastomeric material can may need special scale removal process attached on the sharp edge rib in the immersion process for this reason.

The version of cannelure is designed to make it to be symmetrical in its axis.

Another variant of the cannelure of polishing according to the present invention is that the formation of cannelure is symmetrical in the axis, makes the annular groove wall (Figure 11) in axle left side more precipitous than the wall on axle right side.A major issue of cannelure symmetry aspect is as can be seen, approximately is 1: 2 apart from the ratios of two distances (A, A ') of cannelure axis.Can guarantee that so coated latex or other elastomeric materials reach best distribution.

Under the more special situation of shape-designing, the condom of having made is taken off from the immersion mould, generally all be a problem.According to the present invention, the way that addresses this problem is, in knockout course, controls the direction of one water jet by special at least to changeing hairbrush, and this water jet is flushed on the immersion mould after the rolling ring that is formed by hairbrush.Like this, just produce the skim moisture film between condom of having finished and immersion mould, this moisture film can make the demoulding of finishing condom fully.

Some other feature of the present invention can be understood from dependent claims.

According to all accompanying drawings the present invention is described in further detail below.Wherein:

Fig. 1 is a schematic side view of immersion mould of the present invention (1), the linear design principle on its reflection immersion mould (1) top (3);

Fig. 2 is a schematic side view of immersion mould of the present invention (1), is shown with among the figure immersion mould (1) is demarcated the significant different size plane (Ma β eben) (10) of size;

Fig. 3 is a schematic diagram of immersion mould (1) liquid storing part (4), is shown with the special formed design of the changeover portion (15) of immersion mould from major diameter (D2) to liquid storing part (4) among the figure;

Its liquid storing part (4) was in a schematic diagram of straight and upright state when Fig. 4 rolled for condom in service orientation;

Fig. 5 when making a condom according to a schematic diagram of immersion of the present invention and drying course;

Fig. 6 is a sketch map of demoulding equipment, is shown with among the figure according to water jet of the present invention (27,28) in the situation of immersion mould that liquidated after the condom of brushing;

Fig. 7 is a cross-sectional view that has the polishing emery wheel (30) of corundum bistrique according to the invention (31,32);

Fig. 8 is an enlarged drawing of corundum bistrique according to the invention (31,32);

Fig. 9 is an enlarged drawing that has a corundum bistrique (31) of five identical bistriques according to the invention (32);

Figure 10 a is that symmetric cannelure (17,18) is at immersion mould (1) lip-deep one symbolic layout drawing;

Figure 10 b is the symmetrical cannelure (17,18) that has amplified;

Figure 11 a is the sketch map of a symmetrical cannelure (34) in immersion mould (a 1) groove (6) that is shaped;

Figure 11 b is the cannelure (34) that has amplified.

Fig. 1 is the schematic side view of immersion mould 1.In the present embodiment, the immersion mould constitutes with glass.But use other material, for example hard porcelain, plastics, pottery or similar material, it is good equally also to get the immersion Mold Making.As shown in the figure, immersion mould 1 is made of an extended cylindrical shape part 2 and a top shaped portion 3.The diameter D1 of cylindrical shape part 2 is about 34mm.Extended lower cylindrical part 2 and 3 seamless links of top shaped portion, not having therebetween can perceptible changeover portion.With bigger radius of curvature from cylindrical shape part to the shaped portion transition.The top shaped portion 3 of immersion mould 1 has three key components to constitute again.The body 8 and 9 that two truncated cone shapes are wherein arranged, its appearance are sigmoid curve significantly.The body 8 of two frustum-like shapes and 9 cover-up surface seamless connections little with it.Be one according to recess 6 of the present invention in the convergence part, its concave point, just the diameter of stenosis is D5.The diameter D2 of the truncated cone 9 almost equals the diameter D1 of the extended cylindrical shape part 2 of immersion mould 1.Be in the radius of curvature minimum of recess 6 of the junction of the truncated cone 8,9, compare with the curvature of the outer surface 11,12 of the truncated cone 8,9, recess 6 bending herein is the most obvious.In fact begun transition from the diameter D2 of the truncated cone 9 to so-called liquid storing part 4.In view of the importance of changeover portion, also to be described further this below.The diameter D3 of liquid storing part 4 porch is slightly less than the diameter D4 of liquid storing part 4 upper extent.

In a kind of version of immersion mould 1 according to the present invention, the immersion mould can have a cannelure at least or a ring is arranged near recess 6 stenosis.Under the situation of present embodiment, recess 6 has two cannelures 17,18.Spacing between two cannelures 17,18 is about 1.5mm.

Figure 2 shows that another schematic side view, be shown with different size plane 10.1 to 10.6 among the figure according to immersion mould 1 of the present invention.Size plane 10 is straight lines of imagining according to the needs of the size of the immersion mould 1 of demarcating present embodiment.Size plane 10.2 is parallel to the diameter D5 of recess 6 stenosis congruently.The ideal dimensions of diameter D5 is D5=20mm, but also can change between 15 to 25mm.Diameter D2 is just in time passed through on size plane 10.3, and D2 is approximately 34mm.Diameter D3 is just in time passed through on size plane 10.4, and D3 is approximately 10mm, and dimension line 10.5 is then by diameter D4 (12mm).Dimension line 10.6 is represented the termination of immersion mould 1, and the termination of it and liquid storing part coincides.The optimization of immersion mould 1 shaped portion 3 total lengths is of a size of about 100mm, and extends to size plane 10.6 from size plane 10.1.Size plane 10.1 is about 33mm to the spacing dimension on size plane 10.2, and size plane 10.2 is 50mm to the spacing dimension on size plane 10.4.Size plane 10.4 is about 16mm to the spacing dimension on size plane 10.6.

The subtended angle of the truncated cone is had nothing in common with each other.The subtended angle of its middle and lower part truncated cone 8 is 40 °, and the top subtended angle of the truncated cone 9 is 50 °.Radius of curvature R 1 is 18mm in the present embodiment, simultaneously radius of curvature R 2 〉=25mm.Liquid storing part 4 bottoms are 12mm near the radius of curvature R 3 of diameter D3.The radius of curvature R 4 of liquid storing part 4 upper ends is 6.5mm.The length overall of liquid storing part from size plane 10.4 to size plane 10.6 is 16mm.

Figure 3 shows that the topmost portion of immersion mould 1, promptly liquid storing part 4 and from diameter D2 to liquid storing part the important changeover portion of the lower diameter D3 of 4 bottom.Also significant according to the present invention, not only be the special linear design of bar-shaped liquid storing part 4, also be changeover portion 15.By prior art, that this changeover portion does not allow is precipitous-shown in dotted line among the figure 14, but must as figure describe-line segment of arc S curve shape, on the condom of making of rolling, finally can produce stress like this, and make the plane of liquid storing part 4 perpendicular to the condom of rolling.

Figure 4 shows that the sketch map of a condom of rolling.Because the radius of curvature R 3 at the radius D3 place of the special linear design of changeover portion 15 and close liquid storing part 4, and because the prestressing force that the rolling ring 7 by the condom rolled forms, thereby stress appears at this place, its stress makes liquid storing part 4 keep straight and upright under packed state on service orientation.

Figure 5 shows that one is used for producing in batches the equipment sketch map of condom.The length overall of this equipment from directive wheel 19 to another directive wheel 22 reaches about 30m.Immersion mould 1 utilizes a mechanism that is not further described to be fixed on the continuous conveyor 16, thereby immersion mould 1 passes through each processing step with certain speed.Processing step has been done detailed description in above-mentioned patent document WO 95/25622.According to technology of the present invention, significant is the immersion process of only carrying out in

immersion pond

10 and 13 twice.After immersion mould 1 is conducted through the immersion pond along with rotation, just in equipment 23, carry out the oven dry first time, immersion mould 1 is rotating in level and is passing through this drying plant.After in immersion pond 13, finishing for the second time the immersion process, by do not illustrate among the figure to changeing hairbrush, in equipment 29, make the peristome that is positioned at condom form a crimping 7.Next, the condom of soon finishing carries out intermediate baking in equipment 30.Sulfuration section 31 is extended baking ovens, and it almost extends to the whole length of equipment.

The demoulding equipment schematic of Fig. 6 for the condom of making is taken off from immersion mould 1.Two

hairbrush

25,26 to commentaries on classics act on the immersion mould 1, and downwards condom are taken off.Because the diameter D5 of the stenosis of recess is too little, depends merely on

hairbrush

25,26 and be difficult to take off having finished condom.Overcome this difficult way and be, after established rolling ring 7.One

water jet

27,28 is flushed on the immersion mould 1, causes the skim moisture film between condom and immersion mould, this moisture film can take off condom.As required, water jet can pulse ground or be flushed to continuously on the immersion mould.

Figure 7 shows that the schematic cross-section of a circular grinding wheel 30, the corundum cover 31 that sintering is crossed is housed around it.The thick approximately 10mm of wheel body, diameter 200mm.The material of wheel body can be hardened reinforcing ring epoxy resins, but also can adopt other suitable material.Around wheel body 30 along the with good grounds corundum bistrique 32 of the present invention of girth of agglomerating corundum cover 31.Corundum cover 31 has the tip of angled (α) in the end, as among Fig. 9 with shown in the ratio of amplifying.Angle α generally can be selected between 60 ° to 120 °, as required which type of cannelure and deciding.Normal conditions are elected α=90 ° as.For the cannelure on the upper surface of giving immersion mould 1 17,18 with suitable section form, make the corner angle 34 of bistrique become circle top 33 passivation a little of corundum bistrique 32.Blunt nosed 33 height (H) is to get 0.2 to 0.6mm for well, and is selected according to concrete operating position.In this case, significant is that arris has certain radius of curvature, under the situation of present embodiment, and r=0.4mm.

Figure 9 shows that another embodiment of corundum cover 31.Under must the situation of the many cannelures 17,18 arranged side by side of polishing, suitable way be to arrange a plurality of corundum bistriques 32 on cover 31.Adopt such being enclosed within a bruting process can make 5 cannelures 17.So just the working time of making cannelure 17,18 several times have been shortened.

The granularity of bistrique 32 must be quite thin, to guarantee can not produce the indentation with elastomeric material on cannelure.Required typical size is for example D10, and D20 is to D60.

Figure 10 a is depicted as the indentations section on immersion mould 1 surface, utilizes corundum bistrique according to the present invention to grind symmetrical cannelure 17 on this surface.The representative width (B) of symmetry cannelure 17 openings is 0.3 to 0.6mm (seeing Figure 10 b).Spacing between the single cannelure can freely be selected, but should be not less than 1.5mm basically.

Figure 11 a is depicted as half of top shaped portion of an immersion mould 1.Recess 6 the narrowest a bit on be one according to symmetrical cannelure 34 of the present invention, it is formed by corundum bistrique 32 polishings according to the present invention.Cannelure 34 is with respect to the axis symmetry of an imagination, and this axis is perpendicular to the longitudinal axis of immersion mould 1.The characteristics of symmetry on the cannelure are to define the steepness (seeing Figure 11 b) of the

wall

36,37 of cannelure.Wherein importantly be in the wall 36 in left side, axis suddenly in the wall 37 on right side, axis among this figure.The ratio of spacing A, A ' between the

cannelure arris

38,39 should be A: A ' ≈ 1: 2.This symmetry in cannelure cross section is significant for elastomeric material (latex) fluid property when the emersion from the latex pond.The condom that can prevent bubble and field trash like this or be produced produces the coarse phenomenon of material from the teeth outwards.

Use is made the immersion mould according to technique for grinding of the present invention, particularly make immersion mould 1 lip-

deep cannelure

17,18,34, can accomplish to produce from the teeth outwards clean and accurate polishing effect, guarantee to keep clean when elastomeric material flows, the processing technology of other cannelure then in contrast, the technology of for example utilizing chemical method to make by corrosion.

Claims

1. be used to make a kind of immersion mould (1) of condom, by a little long cylinder body (2) and with S shape shaped segment (3) and the termination that is closed of the liquid storing part (4) that is connected with it constitute, wherein, shaped segment (3) has the recess (6) of the truncated cone (8, the 9) formation of utilizing little cover-up surface to be stitched together, and gradient is stable on immersion mould (1) length surface direction, it is characterized in that

-immersion mould (1) is 15 to 25mm at the diameter (D5) of the stenosis of its recess (6);

The radius of curvature (R1) of the stenosis (D5) of-recess (6) is 17 to 20mm;

-be 50 ° facing to the subtended angle of liquid storing part (4) the open top truncated cone (9);

The subtended angle of-bottom the truncated cone (8) is 40 °;

The intermediate location of the recess (6) of-cylindrical body (2) in shaped segment (3) is to evagination, and its radius of curvature is greater than 25mm;

-from recess (6) to the length overall that enters liquid storing part (4) porch 45 to 65mm;

2. be used to make a kind of immersion mould (1) of condom, by a little long cylinder body (2) and with S shape shaped segment (3) and the termination that is closed of the bar-shaped liquid storing part (4) that is connected with it constitute, wherein, shaped segment (3) has the recess (6) that utilizes two truncateds cone (8,9) that little cover-up surface is stitched together to constitute, and gradient is to move towards continuously on immersion mould (1) length surface direction, it is characterized in that

The radius of curvature (R3) of transition range internal projection is more than or equal to 12mm between-liquid storing part (4) and the shaped segment (3);

Tangent line on the interior sigmoid curve flex point of-shaped segment (3) the maximum scope of shaped segment (3) diameter (D2) with from shaped segment (3) to having one to become 40 ° to 75 ° angle the transition region of liquid storing part (4) with respect to immersion mould (1) longitudinal axis.

3. according to the immersion mould of claim 2, it is characterized in that the bottom scope interior diameter (D3) that enters the inlet of liquid storing part (4) is 6mm to 11mm, the maximum gauge of liquid storing part (D4) is 11 to 14mm.

4. according to the immersion mould of claim 2, it is characterized in that the radius of curvature (R4) of the closed end scope internal projection of liquid storing part (4) approximates 6mm.

5. according to the immersion mould of claim 2, it is characterized in that the curve shape of wooden club shape liquid storing part (4) helps the uniform distribution of coated elastomeric material (latex).

6. according to the immersion mould of one of above claim, it is characterized in that, in the scope of the stenosis diameter (D5) of recess (6), arrange a cannelure (17,18) at least.

7. according to the immersion mould of claim 6, it is characterized in that under unnecessary one situation of cannelure (17,18), the mutual spacing of cannelure (17,18) is about 1.5mm.

8. the processing technology of a condom, wherein, condom is by a little long cylinder body (2) and with S shape shaped segment (3) with the termination that is closed of the liquid storing part (4) that is connected with it and the shaped portion formation made from the thin-walled elastomeric material, elastomeric material in the immersion pond from external coated to the immersion mould body that conforms to condom, its processing step is as follows:

-immersion mould (1) immersion process at twice (10,13) is immersed in in the elastomeric material (latex) that applies, and becomes heeling condition around its longitudinal axis rotation and with the elastomeric material surface during immersion;

After whenever doing once ,-immersion process (10,13) then does the first drying process; Then,

-allow the condom demoulding, use during the demoulding changeing hairbrush (25,26), and guarantee have one water jet (27,28) to be flushed on the immersion mould (1) at least.

9. processing technology according to Claim 8 is characterized in that, in knockout course, controls the action direction of one water jet (27,28) at least, and it directly is flushed on the immersion mould (1) afterwards in rolling ring (7).

10. make a kind of condom technology that a plurality of cannelures (17,18,34) are arranged from the teeth outwards, it is characterized in that, immersion mould (1) is polished on the cannelure surface by at least one dish type mustard gold emery bistrique (32), its angle (α) is between 60 ° to 120 °, and wherein the top (33) of corundum bistrique (32) is blunt shape.

11. the technology according to claim 10 is characterized in that, the height (H) of passivation region (33) is 0.2 to 0.6mm.

12. the technology according to claim 10 is characterized in that, has arranged 5 bistriques (32) on polishing emery wheel (30).

13. the technology according to claim 10 is characterized in that, the cannelure (17,34) that uses the corundum bistrique (32) of passivation to be processed into does not have sharp edge, and its opening (B) is 0.2 to 0.6mm.

14. the technology according to claim 10 and 13 is characterized in that, cannelure (17,18) is symmetrical in axis (35).

15. technology according to claim 10 and 13, it is characterized in that, cannelure (17,18) is symmetrical in the cannelure (34) of axis (35) when forming, and the wall (36) of the cannelure (34) in its axis (35) left side wants more precipitous than the wall (35) on axis (35) right side.

16. the technology according to one of claim is characterized in that, cannelure (34) is to the ratio A of the distance (A, A ') of axis (35): A '=1: 2.

17. the equipment according to claim 10 is characterized in that, at the corundum bistrique of all round arranging (32) of emery wheel wheel body (30) subtended angle (α) between one 60 ° to 120 ° is arranged, wherein, the top (33) of corundum bistrique (32) is passivation.