FR2557011A1 - FORM FOR MOLDING OBJECTS, SUCH AS GLOVES, IN ELASTOMER - Google Patents

Abstract

FORM FOR THE MOLDING OF OBJECTS SUCH AS ELASTOMER GLOVES, CHARACTERIZED IN WHAT IT PRESENTS, IN THE AREA OF THE OBJECT WHERE THE MEANS INTENDED FOR ITS RELEASE ARE IMPLEMENTED, TWO A CAVITES, A SYMETRICALLY ARRANGED ON THE AREA CONSIDERED AND WHOSE DIMENSIONS, IN PARTICULAR WIDTH AND DEPTH, ARE SUCH AS ALLOWING, AFTER RETRACTION OF THE MATERIAL CONSTITUTING THE OBJECT, THE INTRODUCTION, BETWEEN THE FORM AND THE OBJECT FORM, OF THE MEANS USED FOR ITS DISMOLDING.

Description

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  -1- The present invention relates to the forms used for the manufacture, by dipping, of objects such as in particular of

gloves, made of elastomer.

  These forms are soaked in the elastomer bath and, once the layer - more or less thick depending on the destination of the object, in particular the glove - is dried, which we want to obtain, covering the form,

the formed object is removed from the mold.

  To operate, manually or mechanically, this release,

  you must be able to grasp the free edge of the object in pre-

  sufficient tension to exert traction on it allowing

read its release.

  It is in fact a delicate operation requiring the pre-

  elastomer film, supported or not by a textile, in order to

  casing of the form for the purpose of either introducing air or water so that, under the effect of the pressure, the object is ejected from the form, or to grasp, manually or mechanically, the film to strip the object of the form by inversion, which is the case for a flocked glove (a right shape produces a left glove). These operations are

  difficult and usually require manual intervention.

  The present invention brings, to the problem of demolding, in particular of demolding by turning, objects obtained on

  the forms considered, a simple and effective solution.

  It essentially consists in providing on the form, in the area of the object where the means intended for its use are used.

  demoulding, two cavities arranged symmetrically on the area

  and whose dimensions, in particular the width and the depth,

  are such that they allow, after retraction of the material

  killing the object, the introduction between the form and the formed object, means

used for its release.

  An embodiment of the invention has been described below, it being understood that this is only an example and that all other forms, proportions and arrangements could be adopted without

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depart from the scope of the invention.

  During this description we refer to the attached drawing

  on which ': FIG. 1 is an elevational view of a form according to the invention, FIG. 2 is a view of this shape also in elevation, but at 90 from the previous one, with part in section along II / II of FIG. 1,

  Fig. 3 is a sectional view along III / III of FIG. 1.

  In the example treated, form 1 is intended for the manufacture

  tion of elastomer gloves. It is porcelain and circular in section. According to the invention, this shape has, in the area oh, the glove once formed, it will be gripped for demolding

  by inversion, two cavities a, a1, diametrically opposite, pra-

  each ticked on one side of the shape.

  These cavities are, in the embodiment described and

shown, oblong.

  The provisions adopted, according to the invention, have the consequence that the elastomer b of which the glove is made is, after

  its withdrawal, stretched over the cavities a, a1 (see Fig. 2), the dimensions of which

  sions, in particular the width and the depth are chosen so as to allow the introduction between the shape and the glove, directly and without

  no difficulty whatsoever means that have been represented

  schematically felt in c, used to grip the glove and bury it for demolding. There is therefore no longer any need, thanks to the invention,

  to use means intended to prepare the glove to

  put its grip, hence a considerable saving, both of material and time since, even manually, the grip of the

  glove can be done conveniently and quickly.

  - 3- Advantageously, the edges of the cavities are, not at a sharp angle, but rounded so as to leave no trace on the glove obtained. As for the cavities themselves their dimensions are chosen

  depending on the object to be manufactured and the means used for its release

  age. In any event, the invention is not, as noted above, limited to the forms for obtaining gloves, these

  forms which can indeed be of any destination, of whatever form

  conch and in any kind whatever such as metallic, plas-

tick, etc ...

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Claims (4)

  1. Shape for the molding of objects, such as gloves, made of elastomer, characterized in that it has in the area of the object o are used the means for its release, two cavities (a, al) arranged symmetrically over the area considered and whose dimensions, in particular the width and the depth, are such that they allow, after retraction of the material constituting the object, the introduction between the form and the object formed, means (c) used for its release.   2. Shape according to claim 1, for obtaining gloves, this shape being circular in section and characterized in that the cavities which it has are diametrically opposite and provided   advantageously on the faces of the form.   3. Form according to any one of the preceding claims.   teeth, characterized in that the cavities which it presents are oblon- gues.   4. Form according to any one of the preceding claims.   teeth, characterized in that the edges (b) of the cavities are rounded   so as not to leave traces on the object, such as glove, obtained.