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US 12,745,813 B2Granted
Hair weft and preparation process thereof
AssigneeWellna Co., Ltd
InventorsJunna Zou, Xiangpeng Lian, Jiarong Sun
Life of this patent
Estimating the term…
Abstract
A hair extension includes an upper hair extension unit, a lower hair extension unit, and an opening base connected to the upper hair base of the upper hair extension unit and the lower hair base of the lower hair extension unit, wherein the opening base has one or more openings, wherein the upper hair members of the upper hair extension unit are extended downward, so as to be stacked on the of lower hair members of the lower hair extension unit.
Claims15
A hair extension, comprising:
- an upper hair extension unit comprising an upper hair base and a plurality of upper hair members fixed to the upper hair base;
- a lower hair extension unit comprising a lower hair base and a plurality of lower hair members fixed to the lower hair base;
- and
- an opening base comprising an upper end portion, a lower end portion and a middle portion between the upper end portion and the lower end portion, wherein the middle portion of the opening base has one or more openings, wherein the plurality of upper hair members are extended downward from the upper hair base which is located at a position higher than the plurality of lower hair members, so as to be stacked on the plurality of lower hair members;
- wherein the one or more openings are located between the upper hair base and the lower hair base;
- wherein the upper hair base is attached to the upper end portion of the opening base, the lower hair base is attached to the lower end portion of the opening base, wherein the upper hair base and the lower hair base are spaced apart from each other and a gap is defined between the upper hair base and the lower hair base, wherein the one or more openings are communicated to the gap, wherein the plurality of upper hair members and the plurality of lower hair members are extended downward at a same side of the opening base;
- wherein the upper hair base comprises an upper glue base, wherein each of the plurality of upper hair members comprises an upper root part which is embedded in the upper glue base and an upper hair body part which is integrally extended from the upper root part, wherein the upper hair body part is extended out of the upper glue base from a bottom edge of the upper glue base to cover the one or more openings;
- wherein the upper hair base further comprises two stitching lines which are continual sewing threads provided on the upper glue base for fixing the plurality of upper hair members, a distance between the two stitching lines is smaller than 3 mm.
5 more elements
A hair extension, comprising:
- an upper hair extension unit comprising an upper hair base and a plurality of upper hair members fixed to the upper hair base;
- a lower hair extension unit comprising a lower hair base and a plurality of lower hair members fixed to the lower hair base;
- and
- an opening base comprising an upper end portion, a lower end portion and a middle portion between the upper end portion and the lower end portion, wherein the middle portion of the opening base has one or more openings which are located between the upper hair base and the lower hair base, wherein the plurality of upper hair members are extended downward from the upper hair base which is located at a position higher than the plurality of lower hair members, so as to be stacked on the plurality of lower hair members;
- wherein the upper hair base is attached to the upper end portion of the opening base, the lower hair base is attached to the lower end portion of the opening base, wherein the upper hair base and the lower hair base are attached to two opposite sides of the opening base;
- wherein the upper hair base comprises an upper glue base, wherein each of the plurality of upper hair members comprises an upper root part which is embedded in the upper glue base and an upper hair body part which is integrally extended from the upper root part, wherein the upper hair body part is extended out of the upper glue base from a bottom edge of the upper glue base to cover the one or more openings, wherein the upper hair base further comprises two stitching lines which are continual sewing threads provided on the upper glue base for fixing the plurality of upper hair members, wherein a distance between the two stitching lines is smaller than 3 mm.
3 more elements
A hair extension, comprising:
- an upper hair extension unit comprising an upper hair base and a plurality of upper hair members fixed to the upper hair base;
- a lower hair extension unit comprising a lower hair base and a plurality of lower hair members fixed to the lower hair base;
- and
- an opening base integrally extended from the lower hair base, wherein the opening base has one or more openings, wherein the opening base comprises an upper end portion, the upper hair base, which is not formed with the one or more openings, is attached to the upper end portion of the opening base, wherein the plurality of upper hair members are extended downward, so as to cover the one or more openings and be stacked on the plurality of lower hair members;
- wherein the upper hair base comprises an upper glue base, wherein each of the plurality of upper hair members comprises an upper root part which is embedded in the upper glue base and an upper hair body part which is integrally extended from the upper root part, wherein the upper hair body part is extended out of the upper glue base from a bottom edge of the upper glue base to cover the one or more openings, wherein the upper hair base further comprises two stitching lines which are continual sewing threads provided on the upper glue base for fixing the plurality of upper hair members, wherein a distance between the two stitching lines is smaller than 3 mm.
2 more elements
Dependencies are inferred from the claim text.