Coreless twist-ties
AssigneesKyowa Kabushiki Kaisha, Clements Industries, Inc.
InventorsYoshio Iwai, Kazuyuki Takahashi, Takeshi Hirota, Tomoji Abe, Isao Imanishi
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Abstract
A non-metallic coreless twist-tie is formed by melting polymeric material, extruding the material in an elongated form, cooling the material, then drawing the material at a rate of more than about 2.5 times. The tie can include glass beads. The polymer is preferably formed from polymeric resin having a degree of crystallization of about 10% to 60% at a crystallized temperature range of about 100.degree. C. to 250.degree. C. and can also include a quantity of fine glass beads. The resulting tie can be twisted and untwisted many times without breakage, is suitable for use in microwave ovens and is simpler to construct than multicomponent ties.
Claims7
A wireless twist-tie having a cross-section of uniform composition which can be deformed from a ribbon into a releasable closure, comprising polymeric material extruded from polymeric resin and including an effective amount of glass beads having a particle size of less than about 60 .mu.m for enhancing the flexibility and plasticity of the tie to permit twisting and untwisting of the tie as well as for enabling the tie to remain in the form of a tight closure.
Dependencies are inferred from the claim text.