Stock material or miscellaneous articles – Structurally defined web or sheet – Longitudinal or transverse tubular cavity or cell
Patent
1997-08-14
1999-04-20
Crispino, Richard
Stock material or miscellaneous articles
Structurally defined web or sheet
Longitudinal or transverse tubular cavity or cell
156 85, 156222, 156250, 156268, 264230, 264342R, 264DIG71, 4285422, 4285428, B32B 108, B32B 3126, D04D 906
Patent
active
058957030
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to decorative beads which are sewn to a cloth or the like along with embroideries.
BACKGROUND ART
By the present applicant, a useful method and an apparatus for embroidering beads are already developed and disclosed in a patent publication (Japanese Patent Application Publication No.5-321122). According to the published known art, by using a stringlike continuous member comprising multiple numbers of cylindrical beads connected in the axial direction, bead embroidery of high quality can be stably performed. The continuous member of beads used in the above mentioned art can be made in various forms by various kinds of method. It is possible to obtain remarkable effects from the beads embroidering methods of the published known art by applying any form of the continuous member of beads to the embroidering method.
However, the applicant intends to innovate the continuous member of beads applicable to the beads embroidering method and apparatus disclosed in the above mentioned publication so as to further efficiently perform the method and apparatus of known art.
Therefore, it is an object of the present invention to provide beads capable of stably executing bead embroidery having high quality by using a continuous form of beads which can accomplish automatic bead embroidery.
DISCLOSURE OF INVENTION
In order to achieve the object, the present invention provides beads that comprise a laminate film formed by laminating films having different thermal shrinkage ratios in a predetermined direction, the laminate film being heat-treated and curled into a cylindrical shape to form beads.
According to a preferred embodiment of the present invention, the beads are formed in a shape of continuous member comprising a plurality of cylindrical beads divided continuously in the axial direction by forming cuts into a cylinder in the radial direction with a portion of the cylinder left intact as a connecting section between successive beads.
The present invention further provides a method for producing a continuous member of beads wherein a longitudinal laminate tape formed by laminating films having different thermal shrinkage ratios in the lateral direction of the tape is heat-treated and curled in the lateral direction so as to form longitudinally continuous elongate cylinder and wherein cuts are formed into the cylinder at predetermined intervals with a portion of the cylinder left intact as a connecting section between successive beads so as to form a continuous member comprising a plurality of cylindrical beads continuous in the axial direction.
The laminate film is constituted for example from a laminate tape formed by laminating films having different thermal shrinkage ratios in the lateral direction. When the laminate tape is heated, the tape is curled in the lateral direction due to the difference between the thermal shrinkage ratios of the films so that a cylinder is formed from the tape. After that, cuts are formed into the cylinder at predetermined intervals so as to form a continuous member of the cylindrical beads. Even if the curled beads are further heated afterwards, the beads are not uncurled to open, therefore the cylindrical shape is stably maintained.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a perspective view of a laminate tape for forming the beads in accordance with the present invention.
FIG. 2 is a perspective view of a cylinder formed by heating the tape of FIG. 1.
FIG. 3 is a perspective view of a continuous member of beads made by forming cuts into the cylinder of FIG. 2.
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a perspective view of a laminate tape for forming the beads of the present invention. This laminate tape 1a is formed by laminating a first film 2 and a second film 3 made from for example polyester and having different thermal shrinkage ratios in the lateral direction (arrow A) of the tape. The thermal shrinkage ratio of the first film 2 is adjusted to be larger than that of the second film 3. Or the thermal expansion rat
REFERENCES:
patent: 3433688 (1969-03-01), Staats et al.
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