This disclosure is to provide a method for manufacturing a pneumatic tire without generation of end material when manufacturing an inner liner. The method for manufacturing a pneumatic tire according to this disclosure, which arranges an inner liner on an inner circumferential surface of a tire molded body, includes a cutting process of cutting in a widthwise direction a strip-like resin film having a thermoplastic resin film layer, at a constant spacing in a longitudinal direction of the resin film; a joining process of joining uncut edges of a plurality of resin film pieces generated in the cutting process; and a process of arranging the inner liner generated in the joining process on the inner circumferential surface of the tire molded body.

The present technology provides a method of manufacturing a pneumatic tire. The method of manufacturing a pneumatic tire uses a laminated sheet having a predetermined length and an inner liner layer formed from the laminated sheet through a step of cure-molding the tire with end portions of the laminated sheet lap-spliced. In the method, when at least the sheet made of thermoplastic resin or a thermoplastic resin composition obtained by blending the thermoplastic resin and the elastomer is cut into the predetermined length, the cutting is performed by using an edge tool having a non-sharp edge under a temperature condition not lower than 60 C. and not higher than a melting point of the thermoplastic resin.

Provided is a thermoplastic resin composition for the inner liner of pneumatic tires, which has low air permeability and a small percent change in air permeability from fatigue. A thermoplastic resin composition obtained by dispersing a modified rubber having an acid anhydride group or an epoxy group into a polyamide resin and an ethylene vinyl alcohol copolymer, the thermoplastic resin composition being characterized in that the ratio of the polyamide resin to the ethylene vinyl alcohol copolymer is between 47/53 and 61/39. The percent change in air permeability of the thermoplastic resin composition in the present invention when subjected 1 million times to 20% elongation strain at room temperature is 1.30 times or more. Additionally, a pneumatic tire using a film comprising the thermoplastic resin composition in the present invention as an inner liner has a percent change in air leakage of 1.30 times or less at room temperature after going 70,000 km.

A process for forming a film for dynamically vulcanized alloy comprising at least one elastomer dispersed within a thermoplastic resin domain wherein the film is characterized by low shrinkage rates after completion of the formation of the extruded film. The film has a shrinkage rate, measured at not earlier than 96 hours after formation of the film, of less than 1.5% relative to the film width as measured just after film formation. During formation of the film, the extruded film is subjected to a cooling rate of less than 97 C. per second and the frost line of the extruded film is greater than 135 mm.

A process for producing tyres with auxiliary components for vehicle wheels is described. The process includes i) covering the external surface of an expandable chamber for tyre vulcanisation and moulding apparatuses with a first substantially cross-linkable polysiloxane composition and ii) covering the radially inner surface of the impermeable elastomeric material layer of the green tyre with a second substantially non-cross-linkable polysiloxane composition. An expandable chamber for tyre vulcanisation and moulding apparatuses and, a process for treating the expandable chamber are also described.

Techniques for managing fast path evaluation of Boolean predicates are provided. In some examples, the fast path evaluation may be based at least in part on received queries and/or query statements associated with a database and/or streaming data. In some examples, a first instruction for enabling execution of a subset of logical operators of the query may be determined. The determination may be based at least in part on the logical operators of the query. Additionally, based at least in part on the first instruction, logical instructions for implementing the query may be generated. Further, the logical instructions may be compiled into machine-readable instructions for implementing only the subset of the logical operators of the query.

A process for manufacturing a self-sealing elastomer composition, said process comprising the following steps: a masterbatch, comprising at least one diene elastomer and more than 30 phr of a hydrocarbon resin, is firstly manufactured by compounding these various components in a mixer at a temperature or up to a temperature called the hot compounding temperature which is above the softening point of the hydrocarbon resin; and then at least one crosslinking system is incorporated into the masterbatch thus prepared, by compounding everything in the same mixer or in a different mixer, at a temperature or up to a temperature which is kept below 100 C., in order to obtain said self-sealing composition.

The present invention provides a tire sound absorbing material crimping device, and more particularly, a tire sound absorbing material crimping device intended to uniformly and firmly press a sound absorbing material adhered to an inner liner portion of a tire. The tire sound absorbing material crimping device according to an embodiment of the present invention includes a fixing unit configured to align a center of a tire transported by a tire conveying unit and position the tire; a crimping unit configured to press a sound absorbing material while expanding radially toward the sound absorbing material adhered to an inner liner of the tire fixed to the fixing unit; and a motor unit connected to an upper portion of the crimping unit and configured to raise and lower the crimping unit toward the tire.

A tire comprises a sealing layer comprising a junction (21) extending in a main direction (D4) forming, with the circumferential direction (Z) of the tire: in a portion (15S) of the sealing layer extending axially in radial line with the working layer, an angle (ES) ranging, in absolute value, from 20 to 60, and in a portion (15F) of the sealing layer extending radially in each sidewall, an angle (EF), in absolute value, strictly greater than the angle (ES) of the main direction (D4) of the junction (21) in the portion (15S) of the sealing layer extending axially in radial line with the working layer.

The invention discloses a method for manufacturing a bulletproof and explosion-proof tubeless tire, first, the innerliner is attached to the carcass cord ply to make the carcass innerliner, and then the steel wire braided layers and the intermediate rubber layers are laminated to each other to make an explosion-proof layer, using a first stage building machine to complete the first stage forming of the carcass innerliner, explosion-proof layer and belt to obtain a semi-finished embryo, and then using a second stage building machine, the semi-finished embryo and the tread slab base are formed in the second stage to obtain the embryo, which is baked and stored for 896 h and then vulcanised to obtain a bulletproof and explosion-proof tire; through the second stage forming process, the invention solves the problem that the explosion-proof layer is difficult to form due to the excessively hard metal material when making the embryo.