Abstract: The present application relates to a white, biaxially oriented, flame-retardant, UV-resistant polyester film with at least one base layer which comprises, based on the weight of the base layer, from 2 to 60% by weight of a cycloolefin copolymer (COC), where the glass transition temperature of the COC is within the range from 70 to 270° C. The film also comprises from 0.01 to 5.0% by weight of a UV stabilizer as light stabilizer and also comprises from 0.5 to 30% by weight of flame retardant, based in each case on the weight of the layer comprising the UV stabilizer and/or comprising the flame retardant. The film of the invention is suitable for packing foods or other consumable items which are sensitive to light and/or to air, or for use in industry, e.g. in the production of hot-stamping foils or as a label film, or for image-recording papers, printed sheets or magnetic recording cards.

Abstract: The present invention relates to a transparent, low-flammability, UV-resistant, oriented film made from a crystallizable thermoplastic and having a thickness of from 5 to 300 &mgr;m. The film comprises at least one UV stabilizer and at least one flame retardant, and at least the flame retardant, and preferably also the UV stabilizer, is fed directly as a masterbatch to the crystallizable thermoplastic during production of the film. The film may have one or more layers, and the UV stabilizer may have been selected from the group consisting of the 2-hydroxybenzophenones, the 2-hydroxybenzotriazoles, the organonickel compounds, the salicylic esters, the cinnamic ester derivatives, the resorcinol monobenzoates, the oxanilides, the hydroxybenzoic esters, the sterically hindered amines and triazines, and the flame retardant may be an organic phosphorus compound, in particular an organic phosphorus compound soluble in polyethylene terephthalate.

Abstract: The invention relates to an amorphous, transparently colored sheet having a thickness in the range from 1 to 20 mm, which comprises, as the main constituent, at least one crystallizable the thermoplastic and a dyestuff which is soluble in the thermoplastic, to a process for its production and to its use.

Abstract: The invention relates to a transparent, amorphous sheet having a thickness in the range from 1 to 20 mm which contains, as principal constituent, a crystallizable thermoplastic, where the surface gloss, measured in accordance with DIN 67530 (measurement angle 20°), is greater than 130, the light transmission, measured in accordance with ASTM D 1003, is greater than 84%, and the haze of the sheet, measured in accordance with ASTM D 1003, is less than 15%, to a process for the production of the sheet, and to the use of the sheet.

Abstract: A multilayer polypropylene film which includes at least one base layer containing propylene polymer or a propylene polymer mixture and resin, and at least one outer layer containing .alpha.-olefinic polymers having 2 to 10 carbon atoms is disclosed. The resin has a mean molecular weight of.gtoreq.1500. The invention also relates to a process for the production of the multilayer film, and to the use of the film in a twist wrapping process.

Abstract: An oriented, heat-sealable, multilayer polyolefin film comprising a base layer containing polypropylene and a heat-sealable outer layer on each side of the base layer. The heat-sealable outer layers contain a propylene copolymer and/or a propylene terpolymer and a mixture of an antiblocking agent having a mean particle diameter of from about 3 to 5 .mu.m and a further antiblocking agent having a mean particle diameter of from about 1 to 2.5 .mu.m.

Abstract: A polyolefinic multilayer film comprises a base layer containing polypropylene and at least one outer layer. The outer layer comprises a C.sub.3 /C.sub.4 -olefin resin composition with a low degree of crystallinity and has a minimum heat-sealing temperature of below 84.degree. C. A process for the production of the multilayer film and the use thereof are also described.

Abstract: The disclosed oriented polyolefin film contains at least one voided layer. The voided layer contains an amorphous void-initiating polymer which, after orienting, is present as a separate particle inside the void. In the process for producing the polyolefin film, a molten blend comprising an olefin polymer and the amorphous polymer is extruded through a die at an extrusion temperature above the glass temperature or Vicat softening point of the amorphous polymer, the resulting film is drawn off on one or more rollers, and is then subjected to stretch orientation, followed optionally by thermofixing and a surface treatment.

Abstract: A coextruded, biaxially orientated film comprising a base layer, which comprises a polypropylene or a polypropylene mixture, and at least one top layer comprising olefinic polymers. The top layer comprises a combination of inorganic and/or organic particles and tertiary aliphatic amine of the formula I ##STR1## in which R.sup.1 essentially is an at least partially unsaturated alkyl radical having at least 18 carbon atoms or an essentially completely saturated alkyl radical having 8 to 26 carbon atoms andR.sup.2 and R.sup.3 are identical or different and are R.sup.4 --CH.sub.2 OH, in which R.sup.4 is an essentially saturated C.sub.1 -C.sub.6 -alkyl radical.The film is useful, for example, as a label or wrapping.

Abstract: The invention relates to a polypropylene film comprising a layer which comprises polypropylene and resin. The resin has a mean molecular weight M.sub.w of .gtoreq.1500. The invention also relates to a process for the production of the film, and to the use of the film.

Abstract: A transparent, coextruded mutilayered polyolefin film which can be sealed on both sides and having a base layer essentially comprised of a resin-modified propylene polymer and top layers essentially comprised of sealable olefin polymers. At 120.degree. C., the multilayered film has a shrinkage in the longitudinal direction of more than 7% and a shrinkage in the transverse direction of more than 5%. The base layer of the film is essentially comprised of a peroxidically degraded propylene polymer, with the degradation factor A being in the range of 3 to 10, and it contains 5 to 25% of a hydrocarbon resin. The top layers of the multilayered film are essentially comprised of a random ethylene/propylene copolymer having an ethylene content of 2 to 8% by weight, a distribution factor V.sub.F of more than 8, and a thermooxidation temperature T.sub.OX of more than 230.degree. C. The film exhibits a surface gloss (angle of measurement 20.degree.

Abstract: A process for the production of a biaxially oriented propylene polymer film contains, in its single ply (or, if it is a multi-ply film, in its base ply) a low molecular weight resin, and the film has improved stretchability and other desirable physical properties, even though the propylene polymer of the sole or base ply is preferably a homopolymer. The n-heptane-insoluble fraction of the film has a chain isotacticity index, measured by means of .sup.13 C-NMR spectroscopy, of at least 85 to 94%. The sole or base ply contains less than 10% by weight of resin. The film is stretched in such a way that the product of tensile strength in the longitudinal and transverse direction is greater than 50,000 (N/mm.sup.2).sup.2. The film is made by, among other steps, carrying out the orientation in the longitudinal and transverse directions such that the product of the longitudinal stretching ratio and the transverse stretching ratio is.gtoreq.60.

Abstract: An oriented multilayer polyolefin film which includes a base layer containing polypropylene, and at least one heat-sealable outer layer. In one embodiment, the base layer contains a tertiary aliphatic amine and an amide of a water-insoluble carboxylic acid having 8 to 24 carbon atoms and the heat-sealable outer layer contains SiO.sub.2. The multilayer film is essentially free from silicone oil and is useful, for example, as a packaging film.

Abstract: The invention relates to a peelable, oriented, opaque, multilayer polyolefin film comprising at least one opaque layer and a peelable top layer. All layers of the film are essentially vacuole-free. The opaque layer contains pigments having a mean particle diameter of from 0.01 to 1 .mu.m.

Abstract: The disclosed oriented, multilayer olefin polymer film comprises a polyolefinic base layer and at least one heat-sealable or non-heat-sealable top layer. The top layer contains at least one olefin polymer and at least one amorphous polymer which is in the olefin polymer in the form of separated or discrete, substantially non-agglomerated particles. The discrete, substantially non-agglomerated particles form during the coextrusion process for the production of the multilayer film. The film is useful for printing, lamination, and packaging.

Abstract: The disclosed oriented, multilayer olefin polymer film comprises an olefin polymer base layer and at least one outer layer, which outer layer contains from 0.01 to 1% by weight, based on the weight of the outer layer, of approximately spherical ceramic particles. The outer layer can be heat-sealable or non-heat-sealable. The multilayer olefin polymer film is produced by a coextrusion process in which the coextruded film is biaxially stretched, heat-set, and optionally surface-treated. The resulting film is useful in packaging and as a printing surface or in laminates.

Abstract: An oriented, heat-sealable, multilayer polyolefin film is described, which includes a base layer containing polypropylene and resin, and at least one heat-sealable outer layer. The heat-sealable outer layer contains a propylene copolymer and/or a propylene terpolymer and a mixture of an antiblocking agent having a mean particle diameter of from 3 to 5 .mu.m and a further antiblocking agent having a mean particle diameter of from 1 to 2.5 .mu.m. In addition, a process for the production of the multilayer polyolefin film and the use of the film are described.

Abstract: A process for the production of a transparent, printable, biaxially oriented polyolefin multilayer film which can be sealed on both sides including (i) coextruding through a flat die melts corresponding to the individual layers of the film, (ii) taking off and cooling to consolidate the resulting film, via a take-off roll, (iii) biaxially stretching the consolidated film, (iv) thermofixing the biaxially stretched film, and (v) covering top layer C with a non-cohesive layer of polydialkylsiloxane.

Abstract: The invention relates to a matte multilayer polypropylene film which includes at least one base layer containing polypropylene and migrating additives or a mixture of migrating additives, and at least one outer layer which includes a mixture or a blend of two components I and II. Component I essentially contains a propylene homopolymer or a copolymer of ethylene and propylene or ethylene and butylene or propylene and butylene or ethylene and another .alpha.-olefin having 5 to 10 carbon atoms or propylene and another .alpha.-olefin having 5 to 10 carbon atoms or a terpolymer of ethylene and propylene and butylene or ethylene and propylene and another .alpha.-olefin having 5 to 10 carbon atoms or a mixture of two or more of said homopolymers, copolymers and terpolymers or a blend of two or more of said homopolymers, copolymers and terpolymers, if desired mixed with one or more of said homopolymers, copolymers and terpolymers. Component II essentially contains an HDPE or a blend of two components A and B.

Abstract: An oriented multilayer polyolefin film which comprises a base layer containing polypropylene, and at least one heat-sealable outer layer. In one embodiment, the base layer contains a tertiary aliphatic amine and an amide of a water-insoluble carboxylic acid having 8 to 24 carbon atoms and the heat-sealable outer layer contains SiO.sub.2. The multilayer film is essentially free from silicone oil and is useful, for example, as a packaging film.