Other

Yeu Ming Tai Chemical Industrial Co., Ltd.

Ef-materials Industries Inc.

Kenmark Industrial Co., Ltd.

Lite-on Enclosure Inc.

Yeu Ming Tai Chemical Ind. Co., Ltd.

Yeu Ming Ti Chemical Industrial Co., Ltd.

James Huang

William Chou

David Chou

Lei-Ti Huang

Shia-Chung Chen

Wen-I Kuo

Chin-Chun Chou

Chin-Cha Chou

Juin-Yih Lai

Kueir-Rarn Lee

Da-Ming Wang

Ruoh-Chyu Ruaan

Tian-Tsair Wu

Woh-Jer Lee

Radium Huang

Sean Chen

Ching-Yao Huang

John Wu

Tin Chang

Jeff Han

Jenn-Yuh Kau

Yui-Whei Cheng-Yang

Disclosed is a water-proof and dust-proof membrane assembly and applications thereof. The water-proof and dust-proof membrane assembly comprises a body and a supporting member. The body is of membrane and has a first surface, a second surface, and an asymmetric porous structure formed between the first surface and the second surface of the body. The asymmetric porous structure has a thickness ranging between 1 &#x3bc;m and 1000 &#x3bc;m, a first volumetric porosity ranging between 5% and 99%. The asymmetric porous structure has plural pores, and each pore has a pore diameter between 0.01 &#x3bc;m and 15 &#x3bc;m. The supporting member is of a polymeric material and has a first contacting surface, a second contacting surface, and a second volumetric porosity which is greater than the first volumetric porosity. The first contacting surface of the supporting member is adhered to the first surface of the body.

Water-proof and dust-proof membrane assembly and applications thereof

Disclosed is a polymeric electret film as well as the method of manufacturing the same. The polymeric electret film comprises a polytetrafluoroethylene film and an electrode layer. The polytetrafluoroethylene film includes a porous layer, which has a porous structure. The porous structure has a pore diameter ranging between 0.01 &#x3bc;m and 5.0 &#x3bc;m and has a porosity ranging between 20% and 95%. The polytetrafluoroethylene film has a thickness ranging between 1 &#x3bc;m and 50 &#x3bc;m, and is preferably made of expanded porous polytetrafluoroethylene. The polymeric electret film has a surface potential ranging between 0.1 V and 1000 V.

Polymeric electret film and method of manufacturing the same

The PTFE real twist yarn of the present invention is a PTFE real twist yarn obtained by twisting a polytetrafluoroethylene (PTFE) multi-filament slit yarn. The yarn has a circular cross-section with a circularity in the range of 10/8 to 10/10, where the circularity is expressed by the ratio between the major axis width and the minor axis width, the average fineness of filaments is in the range of 1.5 to 200 dtex, a fineness D is in the range of 50 to 6000 dtex, and a twist coefficient K expressed by Formula (1) is in the range of 10000 to 35000:twist coefficient=number of twists&#xd7;(the finenessof the PTFE real twist yarn)&#x2003;&#x2003;(1)

Polytetrafluoroethylene real twist yarn and method of producing the same

A polytetrafluoroethylene (PTFE) fiber includes a filament obtained by partially slitting an oriented PTFE film in a lengthwise direction of the film. Emboss processing is conducted linearly along the lengthwise direction of the film and like a zigzag shape or a convexo-concave shape in a width direction of the film, followed by slitting, whereby the filament includes a network structure in which single fibrils that are opened partially are arranged regularly. A PTFE short fiber is obtained by cutting the above filament and includes a branch structure. Thereby, a PTFE fiber with a small average fineness of single fibrils, a uniform fineness and a single-peak distribution with the peak at a center of fineness and with a high production yield and uniform and stable branch structure can be provided and a method for manufacturing the PTFE fiber can be provided.

Polytetrafluoroethylene fiber and method for manufacturing the same

The present invention provides a retractable dual-purpose file folder, including a retractable chamber with a front panel, a rear panel, a retractable bottom wall, two retractable side walls and an accommodation space. A plurality of three-sided sealed spacers is arranged at intervals into the accommodation space of the retractable chamber, the bottom of which is coupled onto the retractable bottom wall. There is a multi-section locator, including first and second locators. The first locator is arranged onto the front panel, and the second locator arranged on the rear panel. The invention includes positioning bands, each with a positioning end located securely on the front panel and a moveable end with a mating portion mated securely with the first and second locators. The retractable dual-purpose file folder can be accommodated into the brief case and placed uprightly on the table for meeting the diversified customer requirements with better applicability.

Retractable dual-purpose file folder

The present invention provides a file holder with a hanging mechanism, wherein the file holder includes a main body and a hanging mechanism. The hanging mechanism is arranged onto the inner wall of a front panel of the main body and includes a limiting portion, a hanging band and a locator. The first locating end of the locator can be meshed with or disengaged from the second locating end. The hanging band is penetrated into the limiting portion. The hanging band can be retractably concealed into the front panel, or pulled outwards in a hanging state. The hanging band can be limited by meshing of the first locating end with the second locating end or by abutting separately the first and second locating ends onto the first and second threading portions.

File holder with hanging mechanism

The present invention provides an asymmetric porous PTFE membrane for a filter having little change over time and conventionally known properties of a porous PTFE molded article such as water permeability resistance, air permeability, sealing properties and electric properties, in which collection efficiency, air permeability and pressure loss are improved. Specifically, the present invention relates to an asymmetric porous PTFE membrane for a filter comprising a dense skin layer and a continuously foamed porous layer, wherein

Asymmetric porous polytetrafluoroethylene membrane for a filter

The present invention provides an asymmetric porous PTFE membrane for clothing having little change over time and conventionally known properties of a porous PTFE molded article such as water permeability resistance, air permeability, sealing properties and electric properties, in which durability and water vapor permeability are improved by strengthening adhesion strength with fabric. Specifically, the present invention relates to an asymmetric porous PTFE membrane for clothing comprising a dense skin layer and a continuously foamed porous layer, wherein (1) the contact angle of water to the surface of the skin layer is 120 to 140&#xb0;; and (2) the diffuse reflectance of light of the skin layer is 91 to 94%.

Asymmetric porous polytetrafluoroethylene membrane for clothing

A PTFE fiber with a low density and having a network structure that allows effective performances to be given to its finished articles and a method for manufacturing the PTFE fiber are provided. The PTFE fiber is a filament obtained by giving a heat treatment to a biaxially stretched polytetrafluoroethylene (PTFE) film, followed by slitting partially in a lengthwise direction of the film. The filament includes a network structured fiber in which single fibers are opened partially in the width direction, and the filament is an aggregate of the single fibers. This fiber is manufactured as the filament by feeding a biaxially stretched PTFE film to a revolving pin roll with needles implanted thereon, the needles being arranged so that a plurality of rows run obliquely along a circumferential direction at substantially regular intervals, and slitting the film partially in a lengthwise direction. This PTFE filament may be cut into short fibers with a cutter. The short fibers include a branch structure.

The present invention relates to an asymmetric porous polytetrafluoroethylene membrane comprising a dense skin layer and a continuously foamed porous layer, (1) the dense skin layer having a surface roughness Ra of 20 to 165 nm; (2) the dense skin layer having a contact angle for water of 120 to 135&#xb0;; (3) the porous layer having a maximum pore diameter of 0.03 to 1.0 &#x3bc;m; and (4) the membrane having a total porosity of 20 to 70%. The asymmetric porous PTFE membrane has an ability to separate each liquid component from a liquid-liquid homogeneous mixture in addition to known properties such as water permeability resistance, gas permeability, sealing property and electric property, wherein change of these properties over time is small.

Asymmetric porous polytetrafluoroethylene membrane and process for preparing the same

To provide a method of producing a uniaxially stretched polytetrafluoroethylene gasket tape, which comprises: (1) a step for preparing a paste comprising a mixture of a polytetrafluoroethylene powder obtained by emulsion polymerization and an extrusion aid, (2) a step for extruding the paste by means of an extruder equipped with a die which has plural separators inside an orifice thereof having a rectangular cross section, (3) a step for rolling, in the extruding direction, an extrudate having slit lines to give a rolled polytetrafluoroethylene sheet, (4) a step for uniaxially stretching the rolled sheet in the rolling direction after removing the extrusion aid from the rolled sheet, and (5) a step for heat-treating the obtained uniaxially stretched polytetrafluoroethylene sheet. The die of the extruder has plural sheet-like separators in the orifice thereof having a rectangular cross section. The separators are mounted so that free ends thereof are located at a point exceeding a center point of a long side of the orifice, and function to provide slit lines inside the extrudate in parallel with the long side of the orifice. The high performance inexpensive PTFE gasket tape is produced by the uniaxially stretching method and has properties equal to those of biaxially stretched PTFE gasket tape.

Production method of a polytetrafluoroethylene sheet or film

An AC adapter mounting structure is constructed to include a housing holding a rack. The housing has two vertical pivot rods and two locating holes symmetrically disposed in top and bottom sides of a side opening thereof, and an AC adapter for positioning in the rack inside the housing. The AC adapter has two pivots respectively pivoted in the pivot holes, two short positioning rods for engaging the locating holes of the housing after the pivots are pivoted in the pivot holes and the AC adapter is turned to the inside of the housing, and two stop blocks, which are forced into engagement with respective retaining holes in the rack when the AC adapter is set into the inside of the housing.

AC adapter mounting structure

A data disk container has a hollow file, a retainer device, and a movable plate. The retainer device has a positioning plate and a flap plate connected to the positioning plate. The positioning plate has a bottom notch and an adhered periphery. The flap plate has an adhered bottom edge. The movable plate has a top handle bar and a bottom slide plate having a slot. The flap plate is inserted through the slot of the bottom slide plate. The retainer device is disposed in the hollow file. The adhered periphery of the positioning plate and the adhered bottom edge of the flap plate are adhered on the hollow file.

Data disk container

A pepper mill includes a housing holding a driving mechanism and an output shaft, a top cover shell covered on the housing and defining with the housing a peppercorn chamber, the top cover shell having a peppercorn inlet through which peppercorns are inserted into the peppercorn chamber for further grinding, a threaded top neck, and a transparent swivel frame adapted to close/open the peppercorn inlet, a grinding mechanism provided in the top cover shell and driven by the output shaft to grind peppercorns into powder, a screw cap threaded onto the threaded top neck of the housing for output of ground pepper powder, and a protective cap adapted to close the screw cap.

Growing community of inventors

Taichung, Taiwan

James Huang