Patent classifications
B29C43/24
DEVICE FOR PRODUCING AND SMOOTHING PLASTIC FILMS OR PLASTIC PLATES
The smoothing device for plastic films comprises plastic-melt-producing means (1, 5), an adjustable slit die (10) and a roller smoothing unit (16) having cooled smoothing rollers (11, 12), which form an adjustable smoothing gap (13) between each other. Optionally, further rollers (15) are arranged downstream. A thickness gauge (23) measures the thickness of the plastic-film web (22). A controller (30) for controlling the thickness of the plastic-film web (22) may set a setpoint thickness (SD) of the plastic-film web (22) and the volumetric flow rate (SS) of the plastic melt or the line speed (LS). The controller (30) captures the current torques and rotational speeds of the rollers (11, 12, 15) and the current thickness (FD, FD1-FDn) of the plastic-film web (22).
The controller (30) sends setpoint rotational speed signals (C0S, C2S-CnS, CAS) calculated from the captured torques of the rollers (11, 12, 15) to the drives of the rollers and a smoothing-gap setpoint distance signal (GW) for adjusting the smoothing gap (13), and furthermore—in the case of a specified line speed (LS)—setpoint plastic-melt volumetric flow rate signals (SS) to the plastic-melt-producing means, or—in the case of a specified plastic-melt volumetric flow rate (SS)—setpoint line speed signals (LS) to the drives of the rollers (12).
METHOD OF FORMING TOPPING SHEET AND APPARATUS THEREOF
A topping sheet forming method includes: feeding a textile original fabric, obtained by weaving longitudinally aligned tire cords into a cord fabric by use of weft yams; cutting off the weft yarns at a predetermined widthwise position to divide the textile original fabric into a plurality of narrow textile original fabrics; and topping at least one surface of the narrow textile original fabric with unvulcanized rubber.
METHOD OF FORMING TOPPING SHEET AND APPARATUS THEREOF
A topping sheet forming method includes: a feeding and division step of feeding a textile original fabric, obtained by weaving longitudinally aligned tire cords into a cord fabric by use of weft yams, and cutting off the weft yarns in predetermined widthwise positions to divide the textile original fabric into a plurality of narrow textile original fabrics; a calender step of topping, with unvulcanized rubber, at least one surface of one narrow textile original fabric out of the divided narrow textile original fabrics; and a wind-up step of winding up the other narrow textile original fabrics out of the divided narrow textile original fabrics.
METHOD OF FORMING TOPPING SHEET AND APPARATUS THEREOF
A topping sheet forming method includes: a feeding and division step of feeding a textile original fabric, obtained by weaving longitudinally aligned tire cords into a cord fabric by use of weft yarns, and cutting off the weft yarns in predetermined widthwise positions to divide the textile original fabric into a plurality of narrow textile original fabrics; and a topping step of topping at least one surface of each of the narrow textile original fabrics with unvulcanized rubber.
Non-black rubber membranes
A roofing membrane comprising an olefinic rubber; and from about 20 to about 250 parts by weight of a silica filler per 100 parts by weight rubber; wherein the silica filler is chemically coupled to the olefinic rubber; and wherein the roofing membrane is non-black.
Non-black rubber membranes
A roofing membrane comprising an olefinic rubber; and from about 20 to about 250 parts by weight of a silica filler per 100 parts by weight rubber; wherein the silica filler is chemically coupled to the olefinic rubber; and wherein the roofing membrane is non-black.
FILM INSTALLATION AND METHOD FOR PRODUCING A FILM WEB AND USE OF A ROLL APPARATUS WHICH PROCESSES FILM MATERIAL MELT
The invention relates to a film installation and a method for producing a film web, in particular a cast film installation or smoothing calender installation, having: a machine direction in which the film web is conveyed through the film installation; a roll apparatus which processes a film material melt and comprises at least one film-producing roll and a film-producing gap having temperature control apparatuses for thermally treating the film web; and a stretching apparatus for stretching the film web, wherein the stretching apparatus is situated downstream of the at least one film-producing roll in the machine direction, circumventing a critical cooling section. The invention further relates to the use of a roll apparatus which processes film material melt.
FILM INSTALLATION AND METHOD FOR PRODUCING A FILM WEB AND USE OF A ROLL APPARATUS WHICH PROCESSES FILM MATERIAL MELT
The invention relates to a film installation and a method for producing a film web, in particular a cast film installation or smoothing calender installation, having: a machine direction in which the film web is conveyed through the film installation; a roll apparatus which processes a film material melt and comprises at least one film-producing roll and a film-producing gap having temperature control apparatuses for thermally treating the film web; and a stretching apparatus for stretching the film web, wherein the stretching apparatus is situated downstream of the at least one film-producing roll in the machine direction, circumventing a critical cooling section. The invention further relates to the use of a roll apparatus which processes film material melt.
METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITION FILM
Embodiments provide a method for producing a film including a thermoplastic resin composition, the method including: (1) a step of subjecting a thermoplastic resin composition to preliminary heating at 100-250° C.; (2) a step of subjecting a first roller and second roller of a calender roll film-forming apparatus to pre-heating; and (3) a step of introducing the thermoplastic resin composition, which has been subjected to preliminary heating in step (1), into the clearance between the first roller and second roller, which have been pre-heated in step (2), and continuously winding a molten film of the thermoplastic resin composition on the first roller. According to at least one embodiment, the rotational speed of the first roller is higher than the rotational speed of the second roller. According to at least one embodiment, the thermoplastic resin composition contains (A) 100 parts by mass of a thermoplastic resin, (B) 1-60 parts by mass of carbon nanotubes and (C) 1-100 parts by mass of at least one type of material selected from the group consisting of acetylene black and graphite.
Halogen-free decorative homogeneous surface coverings
Halogen-free decorative surface covering compositions comprising a polymer blend, the polymer blend comprising: a) at least one thermoplastic elastomer, the thermoplastic elastomer being a block copolymer comprising hard and soft sequences, wherein the hard sequence is a (co)polymer of one or more vinyl aromatic monomer(s) and wherein the soft sequence is a (co)polymer of one or more alkylene(s) or of a mixture of one or more alkylene(s) and one or more vinylaromatic monomers; b) at least one thermoplastic polyurethane.