256 results about "Material Stretched" patented technology

An absorbent article may comprise a chassis having a front waist region, a rear waist region, a crotch region between the front waist region and the rear waist region, a pair of longitudinal edges, and a pair of side panels extending between and connecting the front waist region and the rear waist region to form a leg opening. Each side panel may comprise a uniformly colored stretch laminate. The stretch laminate may comprise a colored elastomeric member and a first substrate joined to the elastomeric material. The side panels may be joined by a mechanical bond which may form an informational indicia.

The invention has an active touch-sensitive transparent layer over a display screen (LCD) in which an electrically responsive material, such as silicon oil or the above-described material is trapped in a very thin layer with a diode at the top part of the layer and an anode at the bottom. The electrically responsive material changes form by expanding when a current passes through the material from the anode part of the layer to the diode. The expanded material stretches part the top layer to create raised portions of the display screen. The raised portions can be used in the following capacities: to assist a vision impaired viewer, enhance night viewing, allowing for reduced attention or resources to touch-screen manipulation, or change the optical properties of the display by creating a three-dimensional optical property in the surface of the flexible material covering the expanding layer.

The invention discloses a method for testing tensile modulus of a brittle material, which is characterized by comprising the following steps of: arranging a test sample on a Brazilian split tester; symmetrically applying line load to the test sample in the radial direction of the test sample; measuring the total displacement of center of the test sample in the diameter direction, wherein the direction of the total displacement is vertical to the load applying direction of the test sample; calculating to obtain the tensile modulus Et of the material according to the following formula, wherein Et is the tensile modulus, sigma t is the Brazilian split tensile strength; Pt is the line load, L is the length of the test sample, D is the diameter of the test sample, Mu is the Poisson's ratio, and Delta ut is the total displacement of the center of the test sample in the diameter direction. The method for testing the tensile modulus of the brittle material can guarantee more accurate test result.

An electronic cigarette with a selectively replaceable mouthpiece. This includes a vapor generating electronic cigarette with a rigid mouthpiece that has a vapor opening at its distal end. The rigid mouthpiece is configured with a first circumference located about its longitudinal axis, and a second circumference, which is larger than the first circumference, located distal from the first circumference. A mouthpiece cover is formed from a pliable polymeric material, and has an internal cavity that generally conform with the shape of rigid mouthpiece. The mouthpiece cover also has a vapor passage extending from the internal cavity to an outlet end, which defines a continuous passage for vapor to pass from the vapor generating electronic cigarette to the outlet end. In addition, the pliable polymeric material stretches to enable removal and replacement of the mouthpiece cover to and from the rigid mouthpiece of the electronic cigarette.

This invention relates to one constant pushing test machine in metal materials stretching test technique field, which comprises machine rack, drive part and force test part, wherein, the rack is composed of socket, stand column, level beam and rack leg; the stand column is fixed onto socket with top end connected to beam to form one frame to fix drive and test parts; the drive part passes level beam fixed onto rack beam through drive screw or drive screw bar; the force test part is fixed on down end of drive part to realize puling and compressing data test.

The present invention provides a thermal treatment pack that includes a tubular body having a first opening, a second opening, an inner surface and an outer surface. The first opening, the inner surface and the second opening cooperate to define a passage through the tubular body for the limb. The inner surface and the outer surface of the tubular body are defined by a continuous film of flexible material such as a copolymer of polyester and polyurethane. A temperature-retaining fluid such as a water-based gel is received between the inner surface and the outer surface. Optionally, a thermal pack according to the invention can be covered with a fabric layer to provide insulation between the continuous film of flexible material and a user's skin. The diameter of the passage through the thermal treatment pack is preferably smaller than or equal to the diameter of the injured limb, which causes the inner surface of the thermal treatment pack to make contact the limb or an insulating wrap placed over the limb. The thermal treatment pack can thus be positioned at the desired location on the limb by rolling the thermal treatment pack onto the limb. During rolling, the continuous film of flexible material frictionally engages the limb and does not move relative to the limb as the thermal treatment pack is rolled onto the limb. The continuous film of flexible material stretches and conforms to the shape of the limb, providing compressive force and circumferential thermal treatment at the desired location.

A method of bonding material in a process system for producing a bonded product includes the steps of loading a plurality of rolls of elastomeric material in an unwind system; programming a controller with an unwind speed and a rewind speed, the controller in communication with the unwind system and a rewinder disposed downstream from the unwind system for respective communication of the unwind and rewind speeds to the unwind system and the rewinder; unwinding a quantity of material from the plurality of rolls of elastomeric material into a pressure bonder disposed upstream of the rewinder, the pressure bonder and the rewinder operating faster than the unwind system operating at the unwind speed to generate a speed differential, wherein the speed differential imparts a stretch state to the quantity of material; and bonding the stretched quantity of material with the pressure bonder.

The invention relates to an aging test method and an aging test device under the multi-field coupling of humidity, heat and force. The method is used for testing polymer materials and test specimens produced by composite materials of the polymer materials, and the test is based on the dynamic monitoring to the tensile creep compliance of the materials under the multi-field coupling of the humidity, the heat and the force. The device is based on a standard humid and hot environmental box controlled by a microcomputer, a test specimen clamping and loading mechanism is arranged in a box of the device, and an electronic extensometer and a laser extensometer are arranged to form a double displacement sensor and are connected to the microcomputer through an acquisition device after the data acquisition. The method and the device have the advantages of accurate and convenient test and low cost, and are suitable for the research of viscous-elastic mechanical properties and aging performances under the operation of polymers and composite materials of the polymers.

The invention discloses a preparation method of a micro-nano corrugated structure. The preparation method comprises the following steps of: (1) adding electrostatic spinning macromolecular solution into a syringe of a syringe pump, and fully filling the solution into a metal nozzle connected with the anode of a high pressure generator; (2) placing a metal cathode collecting plate connected with the ground electrode of the high pressure generator below the metal nozzle of the syringe, placing a flexible base material on the collecting plate, controlling the macromolecular solution to flow out at certain velocity, and electrifying the macromolecular solution to form jet flow; and (3) moving the metal collecting plate so that the jet flow falls on the flexible base material, namely the corrugated structure is formed on the whole base material. The invention also discloses the micro-nano corrugated structure prepared by using the method, a device for implementing the method and application of the method. When the elastic rubber base material stretches, the formed nano fiber graph can produce great deformation together with the elastic rubber base material and does not break, so that effective interconnection and stretching of flexible electrons are realized, and the invention has broad application prospect on the aspects of electronic skin, artificial muscles, bioelectronics and the like.

Relating to the field of material mechanical performance testing, the invention aims to provide a cryogenic environment material mechanical performance detection test device. The device comprises a testing machine control system, a data detection system, a low temperature and constant temperature system, and a testing machine main body. The testing machine control system includes an electronic servo controller connected to a computer. The testing machine main body consists of a hydraulic source and a double-column rack. There exist two sets of mutually switchable low temperature and constant temperature systems, i.e. a liquid nitrogen gasification refrigeration system and a liquid nitrogen direct refrigeration system. With the device, material stretching and fatigue tests under a temperature ranging from normal temperature to minus 185DEG C can be realized. Switching between the two modes of liquid nitrogen gasification refrigeration and liquid nitrogen direct refrigeration can be realized conveniently. And the device has the advantages of large test temperature range and high detection accuracy, etc.

The invention discloses a tapered tube made of glass fiber and carbon fiber hybrid composite materials and a method for manufacturing the tapered tube, and relates to tapered tubes made of glass fiber and carbon fiber hybrid composite materials and methods for manufacturing the tapered tubes. The tapered tube and the method aim to solve problems of excessively heavy structure weights and electromagnetic wave reflection of existing metal, cement or reinforced concrete wire poles, low tensile modulus of single glass fiber composite materials and high prices of single carbon fiber composite materials. The tapered tube is of a three-layer composite structure, an internal through hole of the tapered tube is cylindrical, an inner layer and an outer layer of the tapered tube are glass fiber layers, a middle layer of the tapered tube is a carbon fiber layer, wires are wound in a variable-length and variable-winding-angle manner to form the inner layer, and wires are wound in a full-length and single-winding-angle manner to form the inner layer and the outer layer respectively. The tensile modulus of the obtained tapered tube made of the glass fiber and carbon fiber hybrid composite materials ranges from 16.5GPa to 17.5GPa and is increased by 32-40% as compared with that of a single glass fiber composite material, a forming process is simple and is easy to operate, and the tapered tube and the method are applied to the field of wire poles and lamp poles.

A skirt or fairing system is provided that is attachable to a lower, longitudinal edge of a trailer, such as a commercial freight trailer, in a manner that alters the airflow beneath and around the trailer to produce increased fuel efficiency and greater driving safety. The skirt fairing is formed from a deformable skin material stretched tautly over a deflectable frame is provided that is attachable to the lower edge of a trailer. The installation of the skirt fairing deflects and alters the airflow beneath the trailer by creating smooth and cohesive airflow along the side and underneath the trailer of a tractor trailer rig in a manner that improves safety and decreases fuel consumption. Further, the fairing is formed using a deformable skin and deflectable frame that prevents damage or permanent displacement of the fairing should it impact an obstruction.

A label wrapper block assembly for mounting in a rotatably mounted wrapper frame in a label wrapper assembly includes a base having opposing ends joined by a top surface and a bottom surface. A channel extends between the ends in the top surface for receiving an object being wrapped by the label wrapper assembly. At least one biasing member is extendible into the channel for urging the label against the object received in the channel. In one embodiment, the at least one biasing member is a flexible material stretched across the base top surface.

The invention relates to a film of plastics material stretched to present a privileged shrinkage orientation and used in particular for fabricating heat-shrink sleeves, the film including at least one line of mechanical weakness and at least one local region of extra thickness extending along the line of weakness so as to border it, the line of weakness and the adjacent local region of extra thickness together defining a tear line. According to the invention, the local region of extra thickness is constituted by applying liquid or semi-liquid material to the film, the applied material being applied to the film in a quantity that depends on the expected shrinkage ratio in the portion of the film that includes the tear line while a sleeve made using such a film is being heat-shrunk onto an article.

The present invention provides a strong yet lightweight truss which could be used in many applications, and is adapted particularly to a support framework for those fabric covered structures utilizing a fabric stretched over the top of the supporting framework. The truss can be made up into sections comprising tubular upper and lower truss members separated by a continuous tubular web. The coupling plates may be attached to each end of the sections such that the top edge of the coupling plate is below the upper side of the upper member, providing a smooth upper surface to the truss and eliminating wear points which could damage the fabric or other material stretched over or supported by the truss. The truss is easily transported and manufactured.

Composite structure trampoline key structures are described for use on top of a touchscreen or other touch, pressure, motion or gesture sensitive components. The aforementioned touch screen may be referred to as a pressure sensitive layer or PSL. The composite structure trampoline key array comprises a frame of one or more physical materials comprising of a perimeter structure and an internal array structure, the frame's function being to position the composite overlay in position in relation to the PSL and to hold a flexible fingertip material in place above the PSL and at a specified surface tension, and (2) a flexible fingertip material integral or attached to the frame which flexible fingertip material stretches in the open areas of the frame's array thereby providing the location for fingertip presses to activate the underlying PSL at specific locations.

The invention provides a method for controlling whole-course displacement in a program-controlled metal material stretching test. The control method is arranged is a test application program of an electro-hydraulic servo or electronic universal testing machine; the control method comprises the following steps of: displacement control in the first stage, displacement control in the second stage, displacement control in the third stage and the displacement control in the fourth stage. The method has the effects that the control method provides a mathematic model which automatically computes theflexibility of the system in the testing process, and the model is simple and reliable and aims at the system flexibility computation on each testing sample. The whole test is carried out automatically, great convenience is brought to the testing personnel, and the working efficiency and accuracy of the yield strength test are improved obviously. The method is applicable to the requirements on thestretching rates at different stages of various metal material samples; furthermore, rate conversion is smoothly transitional before the yield stage is finished; and the discontinuity is not introduced on the stress-strain curve. The method is applicable to the production, research and technical reconstruction on a stretching testing machine.

The invention relates to a strain test device for a tension-torsion multi-shaft fatigue test under a corrosion environment, which is characterized in that an electrobath with a bed sealing system and a lateral-wall sealing system is fixed on a testing machine to form a supporting structure, wherein the bed sealing system is positioned between a support plate and the electrobath and formed by an upper sealing ring, a lower sealing ring, an organic glass plate, an outer sealing ring and a liquor guide opening, and the lateral-wall sealing system is positioned on a joint position of ceramic thimbles and the electrobath and is formed by a lateral sealing ring and a sealing baffle plate; a sample is led into the electrobath and passes through the bed sealing system, one end of each ceramic thimble passes through the lateral-wall sealing system to extend into the electrobath, and the other ends of the ceramic thimbles are connected with an upper induction support frame and a lower induction support frame which are parallel and provided with a tension deformation tester and a torsion deformation tester. The invention designs the more perfect sealing systems, realizes the measurement of material tension and torsion strain under the corrosion environment and has simple structure, difficult leakage, wide measurement range and higher precision.

The present invention disclosed a tension gripping device for testing tension mechanical property of non-metal material. When said gripping device is used, it is fixedly connected with one end portion of dumbbell-like standard sample. Said gripping device includes a plate-shaped main body with upper surface and lower surface, in the main body a recessed zone extended toward lower surface from upper surface is limited, and said recessed zone has an opening end positioned on side of said main body, and the form and size of said zone are basically identical to that of end portion of standard sample.

A method of making an elastic laminate includes the steps of feeding a first substrate in a machine direction, feeding a second substrate aligned with the first substrate in the machine direction, and feeding an array of elastomeric strand material stretched in the machine direction between the first and second substrates. A hot melt adhesive is applied onto the strand material, and a curable adhesive is applied to one or both of the substrates. The two substrates and the elastomeric strand material are then compressed to form an elastomeric preform web while maintaining the elastomeric strand material in its stretched state. The stretched elastomeric preform web is then heated in line by feeding it over heated rolls, and thereafter allowed to relax and contract in the machine direction as it cools and moves downstream from the heated rolls to form a gathered elastomeric laminate. A release liner is fed in the machine direction and aligned with the gathered elastomeric laminate, and a pressure sensitive adhesive is applied to the release liner. The gathered elastomeric laminate and release liner are then compressed to form the elastic laminate which is particularly useful as window flashing.

The invention relates to a DIC weld dynamic strain measurement based high-temperature speckle preparation method. The DIC weld dynamic strain measurement based high-temperature speckle preparation method comprises the following steps: preparing a double-component aluminosilicate into pasty high-temperature resistant glue; grinding, polishing, coating the surface of a substrate material cleaned by alcohol with the high-temperature-resistant glue, then scattering a layer of evenly distributed high-temperature-resistant particles on the high-temperature-resistant glue, and modifying the surface of the substrate material; curing the high-temperature-resistant glue, and thus preparing high-temperature-resistant speckles on the surface of the substrate material. Compared with the prior art, the speckles obtained by the method can resist temperature of around 800 DEG C; the preparation method is especially suitable for the measurement of digital images of weld dynamic strain and also can be applied to the measurement of mechanical performance under the conditions of material stretching, crack damage and the like at high-temperature environment, is novel in concept, is simple to operate, is low in preparation cost, and has wide application prospect in the high-temperature optical measurement mechanical performance.

The invention provides a multi-point loading control curved surface stretch forming device. The device is mainly composed of a machine body framework, a mold installing base, a loading control unit set and a loading control auxiliary mechanism, wherein the loading control unit set and the loading control auxiliary mechanism are distributed on the two sides of the mold installing base; the loading control unit set is composed of a plurality of loading control units; each loading control unit comprises a clamping forcep with the movement capable of being independently controlled, a flexible belt with the work length adjustable, a movable slider capable of moving up and down, a vertical lead screw and a vertical movement control motor; the load in plate material stretch forming is applied by the clamping forceps; the movement trajectories of the clamping forces are controlled through the loading control units; a plate material and a stretch forming mold molded surface can be closely attached in real time, and the optimal curved surface stretch forming effect and an accurate stretch-forming curved surface part are obtained; and the device is adopted for forming the curved surface part, various defects in the curved surface forming process can be avoided, the excessive materials of the process can be remarkably reduced, and materials are saved.