The purpose of the present invention is to provide a storage state in which a reactive compound layer can be stably maintained in a polymer film having a reactive compound layer on the surface. The film roll is obtained by winding together: a first polymer film having a reactive compound layer on the surface, and a second polymer film having a surface roughness (Ra) of 0.1 m or more and a modulus of elasticity of 300 MPa or more and 10 GPa or less. The film bundle is obtained by laminating the first and second polymer films. Preferably, storing the film roll and the film bundle at a low temperature enables a thin layer of a reactive compound to be stably maintained.

Provided is a pressure sensitive adhesive sheet for tires that enables continuous and efficient labeling on tires using a labeling apparatus. The pressure sensitive adhesive sheet includes a release material (C), a first pressure sensitive adhesive layer (B1), a first substrate (A1), a second pressure sensitive adhesive layer (B2), and a second substrate (A2), in this order, and satisfies Requirement (1): in a planar view of the pressure sensitive adhesive sheet, the outline of the first pressure sensitive adhesive layer (B1) exists inside the outline of the second substrate (A2); and Requirement (2): the MD stiffness of the second substrate (A2), measured in the Gurley method according to JIS L 1085, is 0.10 mN or more.

A packaging film suitable for an outer packaging composed of an optionally release-capable, upstretched, at least monolaminar polyolefin film comprising a) a layer (a) based on a mixture of ) 20-49% by weight of a polypropylene or of at least one propylene copolymer, or combination thereof, and of ) 80-51% by weight of at least one polyethylene or ethylene copolymer, and optionally ) customary auxiliaries, with a layer thickness of 20 m, on at least one surface of the layer (a) a release coating (b) composed of cured polysiloxane, wherein the tensile strength of the polyolefin film in machine direction is at least 6.5 N/cm, measured according to DIN EN ISO 527-3, and outer packagings produced therefrom.

A release liner that can be produced in a few method steps (e.g., a coextrusion step), exhibits very good interlaminate adhesion, and has little tendency to deform and deviate from planarity. The release liner is for use on pressure-sensitive adhesives and comprises: a layer system (POL) comprising one or more layers and comprising in each layer, based in each case on the total weight of the layer, a total of at least 80% by weight of one or more polyolefins, where each layer of the layer system (POL) comprises polypropylene; at least one layer (PEL) comprising, based on the total weight of the layer (PEL), at least 80% by weight of polyethylene; and an anchoring layer that connects each layer (PEL) to the layer system (POL).

Film constructions and articles including the film constructions, wherein a film construction includes: a backing having a first major surface and a second major surface, wherein the backing includes at least one backing layer comprising a polylactic acid and an ethylene-containing copolymer comprising a polar comonomer; a tie layer disposed on the first major surface of the backing; and a release layer disposed on the tie layer.

As described herein, the invention includes a building underlayment sheet that comprises an underlayment lamina having a top surface and a bottom surface. The bottom surface includes an interior portion and a selvage portion that extends from the interior portion of the bottom surface to a terminal distal edge of the sheet and the interior portion of the bottom surface bears a self adhesive layer. The selvage portion of the bottom surface bears a bonding composition that is capable of bonding to a top surface of a second underlayment lamina to form a full lap joint. In some embodiments, the self adhesive layer includes an asphalt, a polymer such as poly(styrene-butadiene-styrene)(SBS), and a tackifier, and/or the bonding composition includes asphalt, a polymer such as poly(styrene-butadiene-styrene), ground tire rubber (GTR), and tackifier. Also included are building assemblies that include the application of one or more of the underlayment sheets to a building surface, such as a roof surface and methods of installing the underlayment and waterproofing a roof surface.

Siliconized release film for the production of polymer moldings from fiber composites using a mold, which comprises a support film which is capable of vacuum deep drawing at room temperature and a coating which can be applied in liquid form and consists, optionally after removal of any solvent, of more than 90 atom % of silicon, carbon and/or oxygen, more than 45 atom % of carbon and more than 20 atom % of silicon, in each case based on the total coating and measured by XPS, characterized in that the coating has been crosslinked by means of condensation reactions, addition reactions or radiation.

A packaging film suitable for an outer packaging composed of an optionally release-capable, upstretched, at least monolaminar polyolefin film comprising a) a layer (a) based on a mixture of ) 20-49% by weight of a polypropylene or of at least one propylene copolymer, or combination thereof, and of ) 80-51% by weight of at least one polyethylene or ethylene copolymer, and optionally ) customary auxiliaries, with a layer thickness of 20 m, on at least one surface of the layer (a) a release coating (b) composed of cured polysiloxane, wherein the tensile strength of the polyolefin film in machine direction is at least 6.5 N/cm, measured according to DIN EN ISO 527-3, and outer packagings produced therefrom.

Multilayer polyolefin film comprising a layer sequence of a sealable layer (a) based on a polyethylene component, a layer (b) based on a polymer mixture of 51-85 wt. % of at least one polyethylene and 15-49 wt. % of at least one propylene homopolymer or copolymer and a sealable layer (c) based on a polyethylene component, wherein the melting point of the layer (a) or the layer (c) is at least 5 C. lower than the melting point of the layer (b); the tear propagation capability of the polyolefin film in the machine direction is <5 N, and the tear propagation capability transverse to the machine direction is at least four times higher than in the machine direction, and the tensile strength is >15 N approximately equal manner in machine direction as well as transversally to the machine direction.

A precursor composite material (60) is provided, having a layer sequence (50) comprising an adhesive layer (20), a carrier layer (10) on the adhesive layer (20), a release layer (40) on the carrier layer (10) and a parting layer (30) on the release layer (40), wherein the layer sequence (50) is arranged in such a way that the side of the adhesive layer (20) facing away from the layer sequence (50) is arranged at least in sub-regions on the side of the parting layer (30) facing away from the layer sequence (50). Further provided are a composite material, a method for producing the precursor composite material, a method for producing the composite material and a use of the precursor composite material and of the composite material.