Abstract: A thermoplastic hair connecting element is composed of an essentially prismatic body, wherein ends of replacement or extension hair can be embedded in the hair connecting element so as to extend in a longitudinal direction of the element. The hair connecting element has at least one free surface with a profiling extending inclined relative to the longitudinal direction of the element.

Abstract: A hair weft (5) for hair extension and thickening, in which contiguous hairs (2, 6) are connected to a transversely-running weave strip (3) by an adhesive support (4). In order to ensure various methods of attachment, the weave strip (3) projects beyond the adhesive support (4). In addition, the weave strip (3) together with the adhesive support (4) can be attached at a distance from the hair ends.

Abstract: A U-shaped thermoplastic hair-connecting element is provided with at least one intermediate partition disposed between parallel legs of the U-shaped element. The intermediate partition can be designed as a longitudinal partition which runs essentially parallel to the legs and which projects from a connector of the U-shaped element. Alternatively, the intermediate partition can be a transverse partition which runs essentially transverse to the legs and perpendicular to the connector which connects the legs to one another. There can also be provided longitudinal partitions together with transverse partitions. Foreign hairs can be embedded into the hair-connecting element either during manufacturing, or in a separate manufacturing step.

Abstract: An applicator for replacement hair strands, having hair embedded with one end in a U-shaped thermoplastic element, has a matrix having a recess for receiving the U-shaped thermoplastic element of the replacement hair strand. The applicator also has a stamp movable into the recess of the matrix. An actuating and heating device is provided into which the stamp and the matrix are inserted. The recess of the matrix is penetrated by a channel extending transversely to the movement direction of the stamp. The channel receives a magazine provided with receiving and storing spaces for replacement hair strands. The actuating and heating device has a step-by-step advancing device for the magazine.

Abstract: Method for producing a hair strip wherein hairs lying adjacent to one another are joined together striplike by fusing on and cooling of a strip of synthetic material. For secure cementing of the hairs these are joined together at a predetermined distance from one of their two ends by pouring on of a strip of synthetic material, following which the protruding ends are cut off after solidification of the synthetic material. For improving the hold of the hairs, they may be joined in the region of the strip of synthetic material either before or after this has been poured on by additionally stitching with a thread preferably consisting of the same material.