64results about How to "Reduce basis weight" patented technology

An absorbent personal care article, such as a sanitary napkin or incontinence pad is described having a longitudinal centerline and a transverse centerline and including a pair of opposed first and second wings extending along the longitudinal sides of the article. The article further includes first and second protective strips attached to the sides of the article such that when the wings are folded under the article and around the wearer's undergarment, the first and second protective strips extend laterally outboard of the article and the edges of the wearer's undergarment to provide additional protection against leakage of body fluids deposited onto the absorbent personal care article

Disclosed are coated multifilament dental devices overcoated with biofilm-responsive, imbedded, particulate abrasives.

An absorbent article comprising nonwoven fabric having convex and concave surfaces, and that allows liquid such as excreta and the like to permeate quickly. A sanitary napkin has a plurality of raised ridge portions and groove portions in a top sheet member. The fiber density of the side edge portions of each of the plurality of raised ridge portions in the thickness direction of the nonwoven fabric is substantially uniform, and is higher than the average fiber density in the raised ridge portions. The fiber density of the central portion between both the side edge portions of each of the plurality of raised ridge portions is substantially uniform in the thickness direction of the nonwoven fabric, and is lower than the average fiber density in the raised ridge portions.

A glass fiber reinforced thermoplastic sheet material is provided in which certain properties, or combinations of properties, are improved relative to similar comparative sheet materials. The sheet material generally comprises a glass mat or glass fabric fiber reinforced thermoplastic resin in which the thermoplastic resin at least partially impregnates the glass mat or fabric. The thermoplastic sheet material contains about 15 wt. % to about 65 wt. % of the glass mat or fabric based on the weight of the thermoplastic sheet material and has a thickness in the range of about 0.4 mm to about 3.0 mm. By including glass mat or fabric and maintaining the sheet thickness in the aforementioned range, the present invention thermoplastic sheet material exhibits improved flexural and/or tensile strength and modulus properties at reduced basis weight compared to a comparative thermoplastic sheet materials. A method of providing the glass fiber reinforced thermoplastic sheet material having an improved combination of flexural strength and modulus and/or tensile strength and modulus properties is also described, in which a first layer of a first thermoplastic resin, a second layer of a second thermoplastic resin, and a layer of glass mat or glass fabric are provided; the first thermoplastic resin layer, the second thermoplastic resin layer and the glass mat or glass fabric layer are arranged such that the glass mat or glass fabric layer is interposed between the first and second thermoplastic resin layers; and heat and pressure are applied to substantially melt and compress the first thermoplastic resin and/or the second thermoplastic resin and to at least partially impregnate the glass mat or glass fabric layer with the molten first thermoplastic resin and/or the molten second thermoplastic resin.

A fiber reinforced polymer material having an improved combination of characteristics. The polymer material generally comprises a fiber reinforced polymer resin containing reinforcing fibers and having a porosity between about 0% to about 95% by volume of the polymer material. The fiber reinforced polymer material may form a panel or substrate material that helps resist impact and/or environmental loading. Typically, such a material includes a fiber reinforced thermoplastic or thermoset support layer that has a skin layer on one or both sides, which are joined to one another to form the substrate or panel material. The exterior skin layer typically includes a polymer resin that may also include a support structure, such as reinforcing fibers. The resulting material is typically lightweight and has a reduced basis weight, particularly as compared to current commercial products, in addition to a low thermal expansion such that it provides improved resistance to delamination, improved dimensional stability and flexibility, and decreased water absorption and retention.

There is provided by the present invention a nonwoven fabric laminate which comprises a first spunbonded nonwoven fabric comprising a propylene-based polymer (first SB nonwoven fabric), a melt blown nonwoven fabric comprising a propylene-based polymer and laminated on the first spunbonded nonwoven fabric, and a second spunbonded nonwoven fabric (second SB nonwoven fabric) comprising a propylene-based polymer and laminated on the melt blown nonwoven fabric, and which has overall basis weight of not more than 30 g/m², wherein the basis weight of the first SB nonwoven fabric is in the range of 3 to 25 g/m², the basis weight of the second SB nonwoven fabric is in the range of 1 to 11 g/m², the ratio of the basis weight of the first SB nonwoven fabric to the basis weight of the second SB nonwoven fabric is not less than 1.6, the ratio of a thickness of the first SB nonwoven fabric to a thickness of the second SB nonwoven fabric is not less than 1.4, the basis weight of the melt blown nonwoven fabric is less than 3 g/m², and the compression bond area ratio is in the range of 6 to 25%.

Dental devices coated with substantially aqueous-free, saliva soluble, base coatings and ablative abrasives that break down during flossing; which combination creates the perception during flossing that said devices are working.

A method in connection with the production of mechanical pulp from a cellulose containing material wherein the material is processed in at least one refining step to produce pulp. According to the invention, the pulp is fractionated (4), after a first refining step (1), in order to separate primary fines (5) from the pulp. The invention also relates to a mechanical pulp, produced by the method, and to a paperboard, which at least partly consists of such mechanical pulp.

A method for making an opacity relevant grade paper or paperboard product, such as a communication type paper used for printing and writing applications, utilizes an effective amount of quaternized alkanolamine fatty acid ester compounds as an opacification aid to control the optical properties of the paper or paperboard product as a wet-end additive to a papermaking operation. Using the quaternized alkanolamine fatty acid ester compound can improve the opacity of the paper or paperboard product, maintain the opacity of the paper while reducing the use of other opacification aids, such as inorganic fillers and/or pigments, and allow for a reduction in paper grammage without a compromise in opacity. The improvements in paper optical properties are achieved without adversely affecting other characteristics of the paper product such as bulk value, tensile strength, tear index, and the like.

A method of forming a plurality of substantially-continuous and uninterrupted multi-component filaments for use as a high-loft non-woven web. The multi-component filaments include at least two polymers of different melt flow rates, which imparts latent crimp in each filament. After collection, the latent crimp of the filaments is activated either thermally or by applying tension to the non-woven web.

Disclosed are liquid impregnated sheets containing a combination of split-fibres and/or meltblown fibres with regular fibres of thermoplastic polymers. The sheets can be monolayers or multilayers with non-wovens of split-fibres on the outer portions of the multilayered sheets. The sheets possess good storage and release characteristics for a liquid and can be used as cleansing sheets for personal care or for polishing purposes.

This invention relates to nonwoven textile with barrier properties containing a first barrier layer A with a theoretical cover coefficient TCC A, and consisting of fibres having a median fibre diameter in the layer of dAm, and a second barrier layer B with a theoretical cover coefficient TCC B, and consisting of fibres having a median fibre diameter in the layer of dBm; while the first barrier layer A and the second barrier layer B are together in direct contact. The median diameters of fibres in the first and second layer have a theoretical fibre diameter coefficient x=(dBm−dAm)/dAm, where the theoretical fibre diameter coefficient x is less than or equal to 1 and where the theoretical fibre diameter coefficient x is greater than or equal to 0.25, and the sum of the theoretical cover coefficient TCC A and TCC B is greater than or equal to 50%.

A meltblown nonwoven fabric is provided having thermoplastic resin fibers having an average fiber diameter of 0.1 to 10 μm, a bulk density of not more than 36 kg/m³ and an air permeability, as measured by a Frazier type method at basis weight of 200 g/m², of 3 to 100 cc/cm²/sec. The meltblown nonwoven fabric has a low bulk density and is excellent in sound absorption performance, oil adsorption performance, heat insulation performance, dust collection performance and filtration performance. Since the meltblown nonwoven fabric can be formed from one kind of a resin composition, it can be simply and easily produced as compared with the case of using mixed fibers or conjugated fibers formed from many kinds of resins, and the resulting meltblown nonwoven fabric can have uniformity and no variability of properties.

A sheet feeding apparatus includes a feed roller, a separation roller configured to form a separation nip portion with the feed roller, and a drive unit configured to drive the feed roller and the separation roller. A control portion to control the drive unit stops the drive unit with a sheet nipped at both the separation nip portion and a conveyance nip portion provided in a conveyance portion disposed downstream of the separation nip portion. In the case where a second sheet having lower basis weight than that of a first sheet is conveyed, the control portion set a stop timing of the drive unit to a timing later than that in the case where the first sheet is conveyed.

To provide a polyester binder fiber with improved adhesiveness and a fiber structure containing the polyester binder. (1) A polyester binder fiber includes a polyester and a polymer having a repeating unit represented by the following formula (1) in a proportion of 0.1 to 5.0 mass % based on the mass of the polyester, and the polyester binder fiber has a crystallization temperature measured by differential calorimetry in a range of 100 to 250° C.; (2) a fiber structure includes the polyester binder fibers, and polyester subject fibers without a crystallization temperature, the polyester subject fibers being bonded via the polyester binder fiber.

In the formula R₁ and R₂ are substituents each comprising arbitrary atoms chosen from C, H, N, O, S, P, and a halogen atom, the sum of the molecular weights of R₁ and R₂ is 40 or more, and n is a positive integer.

Disclosed in the invention is an opening intensive type printed circuit board covering film comprising a polyimide film, an adhesion layer, and a piece of release paper. The release paper is formed by a release agent layer, a first PE layer, a body paper layer and a second PE layer successively. The thickness of the release agent layer is less than 1 micrometer, the thickness of the first PE layer is 10 to 20 micrometers, the thickness of the body paper layer is 40 to 60 micrometers, the thickens of the second PE layer is 10 to 30 micrometers, and the thickness of the release paper is 90 to 100 micrometers; and the basis weight of the release paper is 40 to 60g/m<2> and the release force of the release paper is 2 to 8g/5cm. Because the release paper with low basis weight, low thickness and low release force is used, the covering film has performance of low basis weight and low hygroscopicity and the excellent curling-resistant performance, so that the covering film is especially suitable for the high-density small hole opening and half-cutting printed circuit board. Therefore, the environment protection requirement is met; the environment pollution is reduced; the paperless trend of the covering film in the industry is followed; and the sustainable development demand can be satisfied.