Abstract: A bolt tensioning tool is adapted to tension a bolt protruding from a workpiece, and includes a bolt receiving element adapted to be screwed onto the bolt, a nut socket adapted to receive a nut, an axle adapted to exert an axial force on the bolt receiving element, a threaded sleeve arranged to engage the axle and having an internal thread adapted to cooperate with an external thread of the axle such that a relative rotational movement therebetween results in a relative axial displacement between the axle and the threaded sleeve, a supporting sleeve coupled to the threaded sleeve and adapted to selectively bear against the workpiece, and a coupling adapted to connect the nut socket and the supporting sleeve, the coupling is a coupling allowing a limited relative movement between the socket and the sleeve.

Abstract: The present invention relates to greenhouse screens comprising strips of film material that are interconnected by a yarn system of longitudinal threads and transverse threads by means of a knitting, warp-knitting or weaving process to form a continuous product. At least 50% of the strips comprise a single- or multi-layer polyester film having a transparency of at least 92%, wherein the polyester film has a first and a second surface, wherein a permanent antifog coating has been applied to at least one of the first or second surfaces of the polyester film. The antifog coating comprises at least one water-soluble polymer, an inorganic hydrophilic material and a crosslinker, wherein the water-soluble polymer is a polyvinyl alcohol or a hydrophilic amorphous copolymer. Furthermore, the present disclosure relates to production processes of the coated polyester film and its use for the production of energy-saving screens having excellent antifogging effect in greenhouses.

Abstract: A greenhouse screen strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product, wherein at least some of the strips comprise a film material in the form of a single- or multilayer polyester film is disclosed. The film material has a transparency of at least 93.5% and is provided with at least a first anti-reflective coating or layer on a first side of the film material.

Abstract: A greenhouse screen comprising strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product. The film material comprises a highly transparent, biaxially oriented, UV and flame-stable polyester film which is provided on at least one side with a coating which reduces the reflection of visible light. The greenhouse screen is particularly suited for the cultivation of plants with high light requirements.

Abstract: A greenhouse screen comprising strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product is disclosed. At least some of the strips comprise a film material in the form of a single- or multilayer polyester film wherein the film contains at least 1.0 wt.-% SiO2 and a maximum of 2.5 wt.-% SiO2, and has a spreading factor of at least 2 and not more than 8. The greenhouse screen as disclosed herein has a reduced flammability and light scattering properties particularly suited for greenhouse applications.

Abstract: The present specification relates to a bolt tensioning tool adapted to tension a bolt protruding from a workpiece, and comprising a bolt receiving element (5) adapted to be screwed onto the bolt, a nut socket (10) adapted to receive a nut, an axle (3) adapted to exert an axial force on the bolt receiving element, a threaded sleeve (6) arranged to engage the axle and having an internal thread (6a) adapted to cooperate with an external thread (3a) of the axle (3) such that a relative rotational movement there between results in a relative axial displacement between the axle and the threaded sleeve, a supporting sleeve (2) coupled to the threaded sleeve and adapted to selectively bear against the workpiece and a coupling (9) adapted to connect the nut socket and the supporting sleeve, the coupling is a coupling allowing a limited relative movement between the socket and the sleeve.

Abstract: A greenhouse screen comprising strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product. The film material comprises a highly transparent, biaxially oriented, UV and flame-stable polyester film which is provided on at least one side with a coating which reduces the reflection of visible light. The greenhouse screen is particularly suited for the cultivation of plants with high light requirements.

Abstract: A greenhouse screen strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product, wherein at least some of the strips comprise a film material in the form of a single- or multilayer polyester film is disclosed. The film material has a transparency of at least 93.5% and is provided with at least a first anti-reflective coating or layer on a first side of the film material.

Abstract: A greenhouse screen comprising strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of a knitting, warp-knitting or weaving process to form a continuous product is provided. At least some of the strips comprise a polyester film having a transparency of at least 93%, said polyester film having at least one base layer B comprising a thermoplastic polyester and a UV stabilizer. The polyester film has a first and a second surface, wherein a permanent anti-fog coating is applied to at least one of the first or second surfaces of the polyester film. The anti-fog coating has a lower refractive index than the base layer B.A process for producing said film is also disclosed.

Abstract: A greenhouse screen comprising strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product is disclosed. At least some of the strips comprise a film material in the form of a single- or multilayer polyester film wherein the film contains at least 1.0 wt.-% SiO2 and a maximum of 2.5 wt.-% SiO2, and has a spreading factor of at least 2 and not more than 8. The greenhouse screen as disclosed herein has a reduced flammability and light scattering properties particularly suited for greenhouse applications.