Patent classifications
D21H25/005
Thermoplastic fiber sheet
A thermoplastic fiber sheet includes at least cellulosic fibers and thermoplastic resin fibers having a softening temperature of 100 to 140° C. A weight ratio of the cellulosic fibers to the thermoplastic resin fibers (the cellulosic fibers: the thermoplastic resin fibers) is 4:6 to 2:8, and porosity is 20 to 70%.
Elongated tubular articles from wet-laid webs
Embodiments of the present invention relate to elongated tubular members that include at least one layer comprising a cellulose ester. In some cases, the cellulose ester may be in the form of staple fibers. The layer may be formed via a wet-laid fiber web that may also include cellulose fibers. The elongated tubular members may be suitable for use with food and/or beverage items as, for example, drinking straws or other similar items.
Expanded slit sheet cushioning products with novel slit pattern and paper properties
In the preferred embodiments, the present invention provides substantially improved slit sheet cushioning products by advantageously combining novel paper properties with novel slit patterns for improved features and characteristics. In some illustrative and non-limiting example embodiments, cushioning products of the present invention can include, e.g., a novel slit sheet material in combination with extensible paper employed as, e.g., a cushioning pad or as cushioning within an envelope product, wherein the cushioning product can be substantially more resilient, but, yet, e.g., thinner for better utilization of space.
EXPANDED SLIT SHEET CUSHIONING PRODUCTS WITH NOVEL ALTERNATING EXPANSION PATTERNS
In the preferred embodiments, a paper cushioning product is provided that includes: a sheet of slit paper having a slit pattern, the slit pattern upon expansion forming cells that include land regions that are inclined with respect to a plane of an unexpanded sheet; the sheet of slit paper being configured such that expanding the sheet of slit paper with said slits produces land regions that have angles of inclination from the plane of the unexpanded sheet, with said land regions alternating on a row by row basis in forward and backward directions such that the slit pattern upon expansion includes an alternating cell opening pattern wherein each row opens in an opposite direction from an adjacent row. In preferred embodiments, the product further includes at least one of a) said sheet of slit paper is extensible paper that is extensible in a machine direction in a range of at least 3% and/or b) said sheet of slit paper includes slits configured such that upon expansion the slit sheet paper expands into an alternating row expansion pattern.
Aramid compound paper with pinning effect and preparation method thereof
The present invention provides aramid compound paper with a pinning effect and a preparation method for the aramid compound paper. The preparation method for the aramid compound paper includes the following steps: preparing aramid paper from polyphenylene sulfide meltblown superfine fibers and aramid chopped fibers with wet papermaking; then placing polyphenylene sulfide meltblown superfine fiber non-woven fabrics on two sides of aramid base paper as face layers respectively; embedding the polyphenylene sulfide superfine fibers on the face layers into pores of the aramid paper at a middle layer by using a hot-pressing technology to be fusion-joined to the polyphenylene sulfide super-short fibers which are uniformly dispersed in the aramid base paper, so as to form the pinning effect; and meanwhile, melting and then solidifying the polyphenylene sulfide superfine fibers between the aramid chopped fibers to form a continuous network, and firmly bonding the aramid chopped fibers.
Expanded slit sheet cushioning products with novel alternating expansion patterns
In the preferred embodiments, a paper cushioning product is provided that includes: a sheet of slit paper having a slit pattern, the slit pattern upon expansion forming cells that include land regions that are inclined with respect to a plane of an unexpanded sheet; the sheet of slit paper being configured such that expanding the sheet of slit paper with said slits produces land regions that have angles of inclination from the plane of the unexpanded sheet, with said land regions alternating on a row by row basis in forward and backward directions such that the slit pattern upon expansion includes an alternating cell opening pattern wherein each row opens in an opposite direction from an adjacent row. In preferred embodiments, the product further includes at least one of a) said sheet of slit paper is extensible paper that is extensible in a machine direction in a range of at least 3% and/or b) said sheet of slit paper includes slits configured such that upon expansion the slit sheet paper expands into an alternating row expansion pattern.
FIBROUS STRUCTURES
Fibrous structures, and more particularly sanitary tissue products containing fibrous structures having a surface exhibiting a three-dimensional (3D) pattern such that the fibrous structure and/or sanitary tissue product exhibits novel properties compared to known fibrous structures and/or sanitary tissue products, and methods for making same are provided.
Sanitary tissue product with a shaped line of weakness
A web of toilet tissue that includes a shaped line of weakness, wherein toilet tissue exhibits a LWP Factor of greater than about 7.
SYSTEM AND METHOD FOR PRODUCING MULTI-LAYERED BOARD HAVING AT LEAST THREE MEDIUMS WITH AT LEAST TWO MEDIUMS BEING DIFFERENT
A system and method for producing a board product characterized by having two corrugated mediums and at least one embossed medium in the board product. The board product may further include one or more facings that are adhesively coupled to either the corrugated medium, the embossed medium, or both. Generally speaking, a corrugated medium may be characterized as a paper product that exhibits flutes induced by a cross-corrugating process such that the induced flutes are perpendicular (or at least not congruent) with the machine direction of the paper product. An embossed medium may be characterized as a paper product that exhibits flutes induced by a linear-embossing process such that the induced flutes are aligned with the machine direction of the paper product. A resultant board product is stronger and more efficiently produced because of the linearly-embossed medium harnessing the natural strength of the paper in the machine direction.
SYSTEM AND METHOD FOR PRODUCING MULTI-LAYERED BOARD HAVING AT LEAST THREE MEDIUMS WITH AT LEAST TWO MEDIUMS BEING DIFFERENT
A system and method for producing a board product characterized by having two corrugated mediums and at least one embossed mediumin the board product. The board product may further include one or more facings that are adhesively coupled to either the corrugated medium, the embossed medium, or both. Generally speaking, a corrugated medium may be characterized as a paper product that exhibits flutes induced by a cross-corrugating process such that the induced flutes are perpendicular (or at least not congruent) with the machine direction of the paper product. An embossed medium may be characterized as a paper product that exhibits flutes induced by a linear-embossing process such that the induced flutes are aligned with the machine direction of the paper product. A resultant board product is stronger and more efficiently produced because of the linearly-embossed medium harnessing the natural strength of the paper in the machine direction.