Abstract:
High bulk tissue webs are processed sequentially through separate calendering and embossing units to optimize the balance between sheet caliper for winding tension and embossing element height for pattern definition, resulting in embossed, high-bulk tissue products with improved embossing pattern clarity. The multiple step converting process enables the use of male embossing elements having a height of about 0.04 inch or greater. The tissue webs have a Residual Waviness value of 12 micrometers or greater, which is attributable to average surface waviness values for the spot embossements being about 30 micrometers or greater.
Abstract:
A pressing roller (10) for the processing of web paper material, in particular of the type used in cooperation with an engraving roller (G1) for the bonding of two or more embossed plies of web paper material, comprises a cylindrical pressure surface (1 1) defined by a plurality of annular resilient pressure bodies (15) of rubber material that have a high surface hardness which allows to avoid the effect of "double embossing" and at the same time have a high elastic yielding which allows to obtain adequate nip also with relatively low contact pressures.
Abstract:
A converting roll for processing web materials is disclosed. The converting roll has a core with a radius ranging from about 1 inch (2.54 cm) to about 12 inches (30.48 cm) and an outer surface. The converting roll also has an elastomeric roll cover disposed about the outer surface of the core. The elastomeric roll cover has a hardness ranging from about 80 P & J to about 140 P & J and a thickness ranging from about 0.25 inches (6.35 mm) to about 1.25 inches (31.75 mm).
Abstract:
A method for producing embossed paper webs, particularly for manufacturing products of the tissue type, such as toilet tissue, which includes a step of first embossing and characterized in that it includes a second embossing, after the first one, which is deeper than the thickness of the web plus a certain value.
Abstract:
The invention concerns a multilayered web-like tissue product comprising at least two webs, the layers of this product being held together by an embossed connecting portion common to the layers. The individual layers are smooth or provided with an embossed pattern extending substantially over the entire surface. The invention is characterized in that the embossed connecting portion takes the form of embossed strips (4, 5) which immediately adjoin the edges (2, 3) of the multilayered web (1) on both sides and accommodate part of the web width (6). The invention also concerns a process and a device for producing the above-mentioned multilayered web-like tissue product, a plurality, e.g. two or three, of paper webs (18, 19, 20), which are provided with an embossed nub pattern and whose width is a multiple of the width of the paper web (1) to be produced, being guided together through an axially divided embossing gap which is formed between at least three steel nub-embossing rollers (26), arranged at a spacing from and axially aligned with one another, and one or a plurality of counter-rollers (27) which are associated with these nub-embossing rollers and have a surface preferably of steel, rubber, paper or plastics. After the layers have been joined together in the embossing gap, the resultant multilayered paper web is divided by cuts into a plurality of narrower paper webs, these cuts each being made approximately in the centre of the stripe-like embossed patterns produced when the layers are joined. The process of cutting into a plurality of narrower paper webs, of the width appropriate for the subsequent use of the tissue product, is performed when the paper web has passed through the embossing gap and has been rolled up after the joining process.
Abstract:
A method for embossing a sheet of crêpe paper having at least one ply, wherein the sheet is engaged between two metal cylinders provided with projections and rotated by a per se known system such that they mesh with a clearance (e1) between the tips of the projections of one cylinder and the facing surface on the other cylinder, and a clearance (e2) between the sides of two adjacent projections. The method is characterized in that (e1) and (e2) are determined, transversely to the moving direction of the paper, in such a way that the ratio of (e1) to (e2) is between 0.8 and 1.
Abstract:
Process for the manufacture of embossed laminated film consisting in: separately embossing a first and second film by the use of a first and second embossing device, each comprising a rubber cylinder (1, 4) and an engraved cylinder (2, 11) fitted wich a series of projections of a height of between 0.3 and 2 mm and of a density of between 3 and 20 projections per cm2, applying at least partially an adhesive (60) on the tops of the projections on one of the films and fitting together both films using a mating cylinder (5) disposed parallel to one of the engraved cylinders, so that the projections are interlocking. The invention is characterized in that the mating cylinder (5) is metallic ou made of another equally hard material and in that it is held in abutment at a predefined minimum distance (H) from said engraved cylinder (2).
Abstract:
A method for embossing and printing sheets of paper made of two-ply cellulose (101, 107) or further characterized in that the printing of one ply is performed directly on the embossing cylinder (112) by means of one or more printers provided on the embossing units, and in that said ply is combined with a further embossed and coated ply to form a sheet, the printing pigments being located on the inner surface of the sheet between said two or more plies.
Abstract:
1쌍의 플렉서블 베이스(2a,2b)를 대향 배치되는 1쌍의 원통 형상의 롤러에 각각 권취하고, 이들 1쌍의 롤러 사이에 가공 대상 시트(S)를 통과시켜서 엠보싱 가공을 행하는 엠보싱 가공 장치에 사용되고, 1쌍의 플렉서블 베이스(2a,2b)는 서로 암수하는 암측 플렉서블 베이스(2a)와 수측 플렉서블 베이스(2b)로 구성되며, 암측 플렉서블 베이스(2a)에는 엠보싱 가공을 행하는 가공 패턴의 윤곽에 대응하는 선상의 볼록부(3a)가 형성되어 있고, 수측 플렉서블 베이스(2b)에는 암측 플렉서블 베이스의 선상의 볼록부(3a)로 둘러싸여지는 영역 내에 상기 선상의 볼록부(3a)의 내주면에 대해서 간격을 두고 감합되는 볼록부(3b)가 형성되어 있음과 아울러, 이 볼록부(3b)에는 오목부(30)가 형성되어 있다.