Abstract: A method for producing a laminated film includes continuous roll to roll production steps of: providing a first long polymer film and having an absorption axis in the transverse direction; providing a second long polymer film and having a slow axis in the machine direction (MD direction); and laminating the polarizing film on the retardation film by adhering the polarizing film to the retardation film with an adhesive layer so that an MD direction of the first long polymer film corresponds to the MD direction of the second long polymer film.

Abstract: A method for producing a long stretched film according to one aspect of the present invention includes at least a film forming step of forming a long film made of thermoplastic resin, an oblique stretching step of obliquely stretching the long film and a winding step of winding the long stretched film after the oblique stretching step. The oblique stretching device includes gripping tool travel support tools at opposite sides of the traveling long film. Each of the gripping tool travel support tools includes a plurality of gripping tools. In the oblique stretching device, the gripping tool travel support tools provided at the opposite sides of the long film include the same number of gripping tools. A combination of the gripping tools forming a gripping tool pair is constantly the same at grip start points where the long film is gripped by the gripping tools.

Abstract: A method for producing a long stretched film according to one aspect of the present invention includes at least a step of forming a long film, a step of obliquely stretching the long film and a step of winding the long stretched film. A winding direction of the long stretched film can be arbitrarily changed to a direction oblique to a delivering direction of the long film. In the oblique stretching step, grip release points of gripping tools gripping opposite end parts of the long stretched film are independently movable in the winding direction of the long stretched film and so adjusted that a grip release line connecting the grip release points on respective opposite sides becomes parallel to the width direction of the long stretched film.

Abstract: A rail support device installed in a clip chain type sheet stretching apparatus configured to stretch a sheet includes a first rail support member, a second rail support member, and an arc shaped rail support member. The arc shaped rail support member is engaged with each of the connecting portions of the first and second rail support members to form a higher pair. The rail support device is symmetrical with respect to an intersection angle bisecting plane which is a plane developing in a vertical direction and including an intersection angle bisector.

Abstract: A tenter system designed to be used for simultaneously treatment of two base fabrics for felts for paper machines, or similar products, an upper fabric (3) and a lower fabric (4), comprising a pair of tenter frames (6) for the upper fabric and a pair of tenter frames (7) for the lower fabric being adapted to grip respectively the upper and lower fabric along both edges of the fabrics through the heat treatment zone (5), and to maintain specified stretch in the direction transversally to the direction of fabric movement by allowing the two pairs of tenter frames (6, 7) to move in the transversal direction independently of each other, thereby allowing independent change of width of the two fabrics in the transversal direction.

Abstract: A fabric conveying guide rail has a G-shaped saddle locked to where below a conveying guide rail; screw holes being laterally drilled on both outer walls of the recess formed to the web of the saddle; a sleeve being positioned with tabs and slots of a setting nut to lock up the saddle; a guide screw being screwed into the nut; two saddles being mounted in symmetry on a laterally structured square tube; the setting nut being locked horizontally to the recess to define a space between the saddle and the top of the setting nut for insertion of a separation plate that is moved by adjusting the width of the guide screw to prevent the fabric from being contaminated by the guide screw.

Abstract: A joint is provided for articulately interconnecting the adjacent ends of rail assemblies in a tenter frame. The rail assemblies are arranged consecutively along a guide path, and have parallel guide channels for the advancing and returning legs of continuous chains carrying the clamps that grip the edges of the webs being transversely stretched. The joint includes flexible bands arranged to define intermediate channels connecting the guide channels of the rail assemblies. The flexible bands are resiliently deflected in response to articulation of the rail assemblies to thereby arcuately configure the outer medicate channels.

Abstract: A right rail and a left rail are constituted of an entrance rail portion, an exit rail portion, and a rail connecting portion. The respective portions of the rails are moved in a film-width direction via a rail attachment and a positioning section. The positioning section is constituted of a lead screw rod and a positioning motor. The respective positioning motors are controlled by a controller. Upon inputting an entrance width and an exit width through a data input section, the controller moves positions of the respective rail attachments and performs orientation so as to decline an orientation axis.

Abstract: A right rail and a left rail are constituted of an entrance rail portion, an exit rail portion, and a rail connecting portion. The respective portions of the rails are moved in a film-width direction via a rail attachment and a positioning section. The positioning section is constituted of a lead screw rod and a positioning motor. The respective positioning motors are controlled by a controller. Upon inputting an entrance width and an exit width through a data input section, the controller moves positions of the respective rail attachments and performs orientation so as to decline an orientation axis.

Abstract: The invention relates to a stenter for a textile material web with two chain conveyors mounted to be pivotable in a scissor-like manner in the feeding section of the machine. The chains extend in the chain conveyors and have gripping means for grasping the material web edges. The free wings or webs of the pivotable chain conveyors are mounted to be movable on a horizontal support by carrier wheels. At least one carrier wheel is in the form of a driven friction wheel, and a drive motor is directly associated with the carrier wheel.

Abstract: A width stretching unit for textile webs includes a first needle disc unit having first and second needle discs disposed along a first axis at a distance corresponding to the width of the web of material and a second needle disc unit having a second axis which is situated in the pivoting plane parallel to the first axis, and having third and forth needle discs arranged perpendicular to the second axis that rotate about the second axis with the same peripheral speed as the first and second needle discs. The axial distance between the third and fourth needle discs is equal to the axial distance between the first and second needle discs in a zone of increased distance between the first and second needle discs.

Abstract: A tentering system having a pair of spaced tenter rails defining a first end, a second end and a tentering path, and moveable material securement members carried by the tenter rails is disclosed. The tentering system may include first material guides at the first end of the tenter rails and second material guides at the second end of the tenter rails, and at least one drive motor for alternately and selectively driving the securement members in the first and second directions. In addition or in the alternative, a pair of direct drive motors is provided at the first end of the tenter rails, each of the direct drive motors including a clutch moveable between a drive position and a neutral position, and clutch actuating means to selectively and positively move the clutch from the neutral position to the drive position. In addition or in the alternative, first and second pairs of direct drive motors are provided at the first and second ends of the tenter rails, respectively.

Abstract: A combination section consisting of a base section (1) and a covering section (2). The covering section (2) is of an anti-friction material having a coefficient of expansion deviating from that of the material of the base section (1), and is divided between fastening points into partial lengths (4). The partial lengths (4) are interconnected by deformable bridges (6). This makes it possible for the partial lengths (4) to expand essentially unhindered, independent of the expansion of the base section (1) to a different extent.

Abstract: A tentering chain is guided between two guide rails extending in parallel to each other. One guide rail (19a) is an outer guide rail with regard to a course followed by the chain, while the other guide rail (19b) is an inner guide rail. The chain links are hinged to each other by a journal pin which carries a first guide roller on an inner pin section between chain link plates, and a second guide roller on a cranked outer pin section. Thus, the rotational axes of these two guide rollers extend in parallel to each other and spaced from each other, so that one guide roller can only contact one guide rail, but not the other and vice versa. This feature prevents the reversal of the rotation direction of the guide rollers as they travel along the parallel guide rails.

Abstract: Apparatus is illustrated for limiting the movement of tenter frame rails in order to avoid damage, particularly to chains, resulting from excessive movement which includes a spring biased plunger valve carried by the rail on one side of a rail junction, while the other side of the junction carries a member having a predetermined surface for actuating a switch when the member moves to an extreme position where it can no longer support the plunger against the resilient force of the spring, causing a switch to be activated to deactivate the motor imparting transverse movement to the rails.

Abstract: Stenter apparatus for stretching a web to produce a relatively thin film comprises two transversely spaced endless chains one the mirror image of the other relative to the stenter center line (C--C), each chain comprising an inner feed run (9) and an outer return run (10) mounted on supports. Each endless chain is constituted by film clip holders (3) and the chain pases around end sprockets (11B, 12B). The present invention provides a means for lateral adjustment of the feed runs (9) comprising adjustment means for lateral movement of the feed run support relative to the return run support and pivoting portions (10A, 10B) in the outer run support adjacent the end sprockets (11B, 12B) to enable said lateral movement of the feed run. Consequently a major portion of the outer run support does not require to have lateral movement and can be fixed in position and this provides economies in the construction. Further, end sprockets (11B, 12B) of smaller diameter can be used.

Abstract: An elastomer coated bias fabric for reinforcing power transmission belts and the like is disclosed wherein one face of the fabric is provided with an uncured, tacky, carboxylated elastomeric composition. In one embodiment, the fabric is prepared by pre-impregnating the fabric with a neoprene latex composition followed by coating the neoprene composition on both faces of the fabric, and after drying the fabric, overcoating one face only of the coated fabric with a tackified, carboxylated neoprene latex composition. A method and apparatus for manufacturing the coated fabric is also disclosed.

Abstract: An apparatus for simultaneously treating film webs biaxially is described. Film edges are clamped into tentering clamps running around in an endless track. The individual tentering clamps are interconnected with one another by an upper and a lower chain, whereby the connection between two successive tentering clamps is respectively established by two chain links loosely interconnected with each other. The loose chain links can be brought in pairs into a lengthwise extending arrangement or into a kinked arrangement and vice versa, with the aid of control rails arranged outside of the chain track cooperating with a chain link formed as a bellcrank. In this manner the spacing between two successive tentering clamps is shortened or alternatively lengthened. Thus, it is possible to achieve a lengthwise variation in the film web being treated, and especially to adjust a fine shrinking ratio.

Abstract: In a film stretching machine having tentering chains travelling in an endless loop, the forward advance tracks of the tentering chains are laterally adjustably arranged within the machine housing for adjusting to fit different material web widths and for adjusting the lateral or widthwise stretching ratio. The tentering chain reversal guide arrangements at the inlet and outlet ends of the machine are correspondingly laterally slidably adjustable. The return tracks for the tentering chains are arranged outside of the housing in a fixed position and orientation relative to the housing. Straight transition guide portions pivotally connect the stationary return chain tracks to connection points of the respective laterally movable reversal guide arrangement. The straight transition guide portions are each articulated at one end to the respective return chain track and at the other end to the respective reversal guide arrangement. The return chain tracks may be either open or completely closed channels.

Abstract: The guide track for a tentering chain carrying roller-supported tenter clips or clamps has two band-shaped flexible parallel guide rails extending horizontally along the edge of a material web, but protruding in an upright or on-edge manner perpendicular to the material web. The tenter clips have running rollers arranged in the material tentering plane and contacting respective opposite vertical surfaces of the guide rail arranged closer to the material web for taking up horizontal forces. The tenter clip reaches around the two guide rails in a C-shape so that an upper support roller contacts the upper edge of the guide rail lying closer to the material web for supporting the weight of the tenter clip and so that a lower support roller contacts the lower edge of the other guide rail for taking up any tipping or tilting moments of the tenter clip.

Abstract: A guide track for a tentering chain carrying tentering clamps supports the clamps by a number of rollers to form a tentering frame, especially for a film stretching machine. The guide track is an endless track with U-turns in which a single semicircle type of U-turn has been replaced by a U-turn including two partial curved sections each having a smaller radius of curvature and the two curved sections are interconnected by a straight intermediate section. The reversing or looping curved section at the beginning of the reverse run is so constructed that at this location a drive sprocket wheel can mesh with the tentering chain. Thus, the drive sprocket which was a source of contamination for the web is located remote from the web to thereby substantially reduce any possibilities of contaminating the web.

Abstract: A tensioning machine for use in the heat treatment of textile fabric for controlling the widthwise dimension of the fabric comprises a pair of continuously movable tenter chains for moving the fabric along a path and supported by guides which are coupled to one or more rotatable spindles operable to adjust the guides transversely of such path. One end of each spindle is both rotatable and axially movable and cooperates with a force sensitive device that is operable in response to an alteration in the force applied thereon to generate a signal. Each spindle is coupled to a rotary drive, the operation of which is controlled by the signal generated by the associated force sensitive device.

Abstract: A tenter frame drive is illustrated wherein auxiliary power operated means are provided to drive the sprockets at the entrance end of the chain runs, opposite the main drive at the exit end. The auxiliary drives remove the slack in the chains which normally occurs at the exit end opposite the point of driving engagement of the sprockets in such a fashion as to avoid chattering of the chain and tenter clips while providing for a division of the forces so as to some extent reduce the maximum tension in the chain, and at the same time insure sufficient tension for proper gripping of the web at the entrance end of the tenter.

Abstract: A chain guide for a stenter comprises head pieces and end pieces, each carrying a respective return wheel for the associated chain, each head piece being pivotally connected to an associated guide rail so that it can be swung out about a vertical axis and each end piece being displaceable outwardly while remaining parallel to the guide rails. The arrangement allows vertical chain reversal while still allowing clips to be carried by the chain and to engage and disengage a web satisfactorily.

Abstract: An apparatus is provided for detecting the presence of, for measuring the magnitude of, and for determining the location of, variations in the distance between the tenter chains in a carpet drying oven. Such apparatus facilitates the measurement of the distance between the tenter chains at various positions along the length of the oven without the need for prolonged shut-down of the oven as has heretofore been required for manual obtention of such measurements. In addition, the instant apparatus allows such measurement to be made while the tenter is under tension due to the weight of the carpet thereon.

Abstract: The present invention is directed to improvements in a tenter frame device, and more particularly relates to a means for enabling the rails of a tenter frame to be shifted transversely relative to the longitudinal axis of the rails and also for the rails to be angularly oriented with respect to each other, the device automatically maintaining the angular relation of the rails to each other within predetermined limits.

Abstract: A fabric printing machine, comprising a printing head, a steamer disposed beyond the printing head, a washer disposed beyond the steamer, a pair of stenter chains operative to engage the edges of the fabric advancing from the printing head and to drive it positively through the steamer, through the washer and past a suction slot disposed beyond a wash tank in the washer, means for adjusting the lateral spacing of the stenter chains to suit the width of the fabric, means for injecting steam into the steamer, and means in the wash tank for circulating water through the fabric.

Abstract: This invention relates to tenter frames and more particularly to a tenter rail provided with a gap crossing mechanism whereby the tenter clip engaging surfaces of the tenter guide rails, at the rail joints, are smooth for the gentle passage of the tenter clips arranged in a chain.

Abstract: This invention relates to tenter frames and more particularly to a tenter rail provided with a gap crossing mechanism whereby the tenter clip engaging surfaces of the tenter guide rails, at the rail joints, are smooth for the gentle passage of the tenter clips arranged in a chain.

Abstract: This invention relates to tenter frames and more particularly to a tenter rail provided with a gap crossing mechanism whereby the tenter clip engaging surfaces of the tenter guide rails, at the rail joints, are smooth for the gentle passage of the tenter clips arranged in a chain.