A non-continuously laminated structure of thermoplastic films comprises thermoplastic films with differing material compositions and differing functional benefits. In particular, one or more embodiments comprise thermoplastic films that are co-extruded separately and then combined together by a post-extrusion bonding process. The differing composition of the various films of the non-continuously laminated structure of thermoplastic films and the post-extrusion bonding process, provide the structures with the functional benefits of the individual films.

Provided are a composite sheet whose recess-protrusion shape can easily be made crush-resistant in a state that the soft feel against the skin is maintained, and a device and method for manufacturing said composite sheet. A first sheet has a curved part in which one surface thereof rises and the other surface thereof is recessed, and a boundary part adjacent to the curved part. A second sheet is joined to the boundary part of the first sheet so as to cover the other surface of the curved part. A region of the second sheet facing the curved part has a protruding part in which an inside surface on the first sheet side rises so as to approach the curved part and an outside surface on the reverse side thereof is recessed, and a flat part surrounding the periphery of the protruding part.

An apparatus for the production of a paper web, includes: a first embossing unit (1) with a first embossing cylinder (2) and a corresponding counter-cylinder (3) for embossing a first paper ply (4); a second embossing unit (5) with a second embossing cylinder (6) and a corresponding counter-cylinder (7) for embossing a second paper ply (8), such that, once embossed, the plies have a series of oppositely oriented reliefs (R4, R8), the embossing units (1, 5) being synchronized so that the reliefs are nested into each other; a sizing unit (1C, 2C, 3C) associated with the first embossing cylinder (2) to distribute a predetermined amount of glue on the side of the second ply (8) opposed to that from which the respective reliefs (R8) emerge; a structure (11) for joining to each other the plies (4, 8) exiting from the apparatus.

Multi-layer bags may be formed to include first and second sidewalls joined along a first side edge, an opposite second side edge, and a closed bottom edge. The first and second layers may be non-continuously laminated together to include bonded regions in which the layers are bonded and unbonded regions in which the layers are not bonded. Such a bag may be described as a bag-in-a-bag type configuration in which the inner bag is non-continuously bonded to the outer bag. The inventors have surprisingly found that such configurations of non-continuous bonding provides increased and unexpected strength properties to the multi-layer films and bags.

Products having improved ply bonding, moldability and drape and methods for making those products are described. The methods comprise producing a multi-ply adhesively bonded product comprising a pattern of uniformly spaced microembossed elements with a bond area of less than about 0.020 inches/sq. inch.

The multi-ply tissue products that are both durable and dispersible may be manufactured using a creping process that employs a non-crosslinked vinyl acetate-ethylene polymer as a creping agent. The products generally have a Slosh time less than 2 minutes, such as less than about 60 seconds, such as less than about 45 seconds. Surprisingly, the foregoing Slosh times are achieved despite the tissue products having relatively high cross-machine direction (CD) wet tensile strength, such as greater than about 100 g/3. Typically, increasing wet tensile strength, particularly wet CD tensile strength, negatively effects dispersability and increases Slosh time. Despite this trend, the multi-ply tissue products have a relatively high degree of wet strength and good dispersability.

Disclosed is a tissue paper product including at least three plies with a top ply and bottom ply as outermost plies, and an inner ply between the top and bottom plies, a basis weight of the tissue paper product being 30-150. The top ply being embossed with at least two types of embossments including first embossments with a first height and second embossments with a second height, the first height being larger than the second height, and the bottom ply is embossed, the inner ply and the top ply being bonded with the bottom ply at tips of the first embossments with an adhesive, such as a lamination glue, or the inner ply, the top ply, and the bottom ply are ply-bonded with mechanical bonding, at least one of the top ply and the bottom ply being embossed by a heated embossing roll.

Disclosed is a coreless roll of a tissue paper product having a first end and a second end, and a web of tissue paper product being wound such as to define a central inner hole with the first end located on the outer side and the second end located at the inner hole, the product including a bonded first ply and a second ply, a grammage of the product being 35 to 55 g/m2, and having a Geometric Mean Tensile strength of at least 200 N/m, the first ply and the second ply being made of Conventional Wet Press (CWP) paper and embossed to be nested, the coreless roll having an outer diameter of 95 to 150 mm, an inner hole diameter of 20 to 50 mm, and a density of the coreless roll of 70 to 90 kg/m.sup.3, a caliper ratio of the roll of 40% to 70%.

A multi-ply tissue paper product includes at least three plies. The tissue paper product includes a first inner ply being a creped ribbed ply and having a basis weight of 10 to 30 gsm, and a first outermost ply and a second outermost ply on each side of said inner ply, the first and second outermost plies being non-ribbed plies, wherein a creped ribbed ply is a ply including ribs and valleys providing an average core roughness Rk in the range 10 to 300 m, and peaks being 4 to 12 per cm as measured along said first direction; and wherein a non-ribbed ply is a ply displaying no parallel ribs and valleys extending continuously along any direction of the ply or displaying parallel ribs and valleys extending continuously along any direction of the ply, the ribs and valleys providing peaks being less than 4 per cm.

Disclosed is a coreless roll of a tissue paper product having a first end and a second end, and a web of tissue paper product being wound such as to define a central inner hole with the first end located on the outer side and the second end located at the inner hole, the product including a bonded first ply and a second ply, a grammage of the product being 35 to 55 g/m2, and having a Geometric Mean Tensile strength of at least 200 N/m, the first ply and the second ply being made of Conventional Wet Press (CWP) paper and embossed to be nested, the coreless roll having an outer diameter of 95 to 150 mm, an inner hole diameter of 20 to 50 mm, and a density of the coreless roll of 70 to 90 kg/m.sup.3, a caliper ratio of the roll of 40% to 70%.