摘要:
The adhesive tape has an adhesive layer of the hot-melt type applied to a backing film based on biorientated polypropylene. This film comprises in succession at least one first layer comprising polypropylene or a mixture of polypropylene resins having a melting point of between 150 and 170°C and an MFI of between 1 and 5 g/10 min at a temperature of 230°C and 2.16 kg, an opaque layer comprising a polyethylene-based resin having a melting point of between 120 and 150°C and an MFI of between 1 and 5 g/10 min at a temperature of 230°C and 2.16 kg, and a layer of polyamide-resin-based lacquer.
摘要:
The tape comprises a substrate in the form of an olefinic polymer film, a pressure-sensitive adhesive layer on one face of the substrate, and a printable, non-stick layer on the other face of the substrate. The non-stick layer is formed by a composition including a chlorinated olefinic resin and an acrylic resin in which the ratio by weight of the acrylic resin to the chlorinated olefinic resin may vary from 4:1 to 1:4. The composition also includes from 0.1 to 2 parts by weight of a non-stick agent per 100 parts by weight of the sum of the first two components, the non-stick agent being prepared by the reaction of an alkyl isocyanate with polyvinyl alcohol and a reactive silicon compound.
摘要:
The adhesive tape has an adhesive layer of the hot-melt type applied to a backing film based on biorientated polypropylene. This film comprises in succession at least one first layer comprising polypropylene or a mixture of polypropylene resins having a melting point of between 150 and 170°C and an MFI of between 1 and 5 g/10 min at a temperature of 230°C and 2.16 kg, an opaque layer comprising a polyethylene-based resin having a melting point of between 120 and 150°C and an MFI of between 1 and 5 g/10 min at a temperature of 230°C and 2.16 kg, and a layer of polyamide-resin-based lacquer.
摘要:
A pressure-sensitive and printable self-adhesive tape of the type including a substrate in the form of a polyolefin film has a release layer deposited on one face of the substrate, including from 50 to 62 parts by weight of polyamide resin produced by the condensation of fatty acid dimers and/or trimers with diamines and/or triamines, from 30 to 42 parts by weight of ketone resin, and from 5 to 10 parts by weight of a release agent constituted by a polyvinyl carbamate obtained from stearyl isocyanate and a polyvinyl alcohol having a Brookfield viscosity of between 5 and 45 cPs (20-45 10⁻³ Pascal seconds). In order to prevent set-off phenomena, particularly for self-adhesive tapes in which the adhesive layer is of the type with a solvent, a commercially-available type of polyamide ink is used with a polyvinyl carbamate additive produced from a polyvinyl alcohol having a preferred viscosity of between 4 and 6 cPs (4-6 10⁻³ Pascal seconds).
摘要:
A multilayer, polyolefin, bi-axially oriented film comprises at least one base layer, a first intermediate layer, a first cover layer and a second cover layer disposed on the opposite side from the first cover layer and the first intermediate layer with respect to the base layer. Antifog additive is contained at least in the base layer and in the first cover layer. In the film the ratio between the thickness of the first cover layer and the thickness of the first intermediate layer is greater than 1 and lies between 1 and 2 and the surface tension of the face of the film belonging to the first cover layer is greater than the surface tension of the other face of the film belonging to the second cover layer.
摘要:
A lacquer is applied on a biaxially oriented polypropylene (BOPP) film, in order to decrease considerably the transmission rate of mineral oils. The lacquer is applied in the form of an aqueous dispersion on an intermediate primer layer and is composed of at least one resin acting as a binder and an amino acid.
摘要:
The adhesive tape comprises a support layer based on substantially homopolymeric polypropylene and a layer of adhesive based on natural rubber, with an intermediate layer based on polypropylene copolymer that is interposed between the support layer and the layer of adhesive.
摘要:
A multilayer, polyolefin, bi-axially oriented film comprises at least one base layer, a first intermediate layer, a first cover layer and a second cover layer disposed on the opposite side from the first cover layer and the first intermediate layer with respect to the base layer. Antifog additive is contained at least in the base layer and in the first cover . layer. In the film the ratio between the thickness of the first cover layer and the thickness of the first intermediate layer is greater than 1 and lies between 1 and 2 and the surface tension of the face of the film belonging to the first cover layer is greater than the surface tension of the other face of the film belonging to the second cover layer.
摘要:
The film is of the multilayered, biaxially oriented, polyolefin type and comprises titanium dioxide in a quantity of between 0.20 and 0.48% relative to the total weight of the film and at least one antifog additive in a quantity of between 0.2 and 1.2% relative to the total weight of the film. The titanium dioxide is present in the form of particles which have an average dimension of between 10 and 50 nm and are covered with a coating that opposes their agglomeration.