An environment-friendly material includes 50 wt % to 70 wt % of inorganic mineral powder, 20 wt % to 45 wt % of polyolefin, and 5 wt % to 15 wt % of auxiliary agent. The inorganic mineral powder contains calcium carbonate; the polyolefin may be linear low density polyethylene, low density polyethylene, medium density polyethylene, high density polyethylene, or polypropylene; and the auxiliary agent may be polyolefin elastomer, maleic anhydride grafted polyolefin elastomer, or maleic anhydride grafted polyethylene. The disclosure also provides a manufacturing method of window covering slat using the environment-friendly material and a window covering slat manufactured by the method.
B29B 9/10 - Making granules by moulding the material, i.e. treating it in the molten state
C08L 23/02 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers not modified by chemical after-treatment
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment
A window blind includes top and bottom beams, and many slats disposed therebetween. The top beam has two opposite lateral holes. The window blind further includes a slat folding transmission device having a cord rolling member disposed in the top beam, and two opposite lift transmission cords passing through the lateral holes of the lateral plates of the top beam respectively. Two ends of each lift transmission cord are connected with the bottom beam and the cord rolling member respectively, so that the two lift transmission cords can pull the bottom beam simultaneously when being rolled by the cord rolling member, thereby moving the bottom beam upwardly to fold up the slats. Therefore, the slats of the window blind of the invention need no processing and keep complete in structure, thereby providing good effect of blocking out the light when being adjusted to the inclined condition.
E06B 9/303 - Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
E06B 9/322 - Details of operating devices, e.g. pulleys, brakes, spring drums, drives
E06B 9/306 - Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape with tilting bar along which the raising cords are guided
An adjustable cord winder includes a winding unit, two cord-winding gears, two glide units, and two driving cords. The winding unit has two coil spring gears. A coil spring is connected between the coil spring gears. Each cord-winding gear meshes with one of the coil spring gears and thus rotates synchronously with the coil spring gear. Each glide unit has a roller unit capable of rotating by a specific angle and rollers freely, rotatably disposed at the roller unit. Each driving cord has one end connected to the cord-winding gear to allow the driving cord to wind on or let out from the cord-winding gear. The driving cords wind on at least one roller. The adjustable cord winder is characterized by the rollers for enhancing stability and smoothness of the driving process of the driving cords, and the roller unit for adjusting the tension on the driving cords.
E06B 9/322 - Details of operating devices, e.g. pulleys, brakes, spring drums, drives
E06B 9/78 - Operating, guiding or securing devices or arrangements for roll-type closuresSpring drumsTape drumsCounterweighting arrangements therefor for direct manual operation, e.g. by tassels, by handles
E06B 9/42 - Parts or details of roller blinds, e.g. suspension devices, blind boxes
A one-way driving mechanism for a cordless window blind essentially includes two volute spring gears, which are meshed with each other, and a volute spring connected between the volute spring gears. The volute spring gears each meshes with a cord gear. Each of the cord gears is connected with a cord, which is encircled with a single loop by a clutch wheel. Each clutch wheel is provided therein with a position-securing member.
A blind body actuator used in a cordless window blind assembly is provided to include a casing, a winding mechanism, two guide units and two lift cords. The winding mechanism includes two winding wheels and a volute spring connected to the winding wheels. Each of the winding wheels is meshed with one respective lift-cord wheel so that the lift-cord wheels can be driven by the winding mechanism to rotate synchronously. The guide units are respectively disposed adjacent to one respective lift-cord wheel, each including a first cylinder roller. Each of the lift cords is wound around the first cylinder roller of one respective guide unit, having one end thereof connected to one respective lift-cord wheel and an opposite end thereof extended out of the casing.
A blind body brake mechanism for non pull cord window blind utilizes two one-way clutch units to control the positioning of the blind body during the extending or receiving operation. Each one-way clutch unit includes a wheel axle, multiple stop blocks equiangularly connected to the wheel axle, an arched rolling groove defined between each two adjacent stop blocks, a planetary gear movably mounted in each arched rolling groove, and a one-way wheel mounted on the wheel axle and having an internal gear meshed with the planetary gears.
A lift-cord guide for window blind is disclosed to include a roller holder including a pull cord inlet and a pull cord outlet extending in a perpendicular manner relative to the pull cord inlet, and a first guide roller rotatably mounted in the roller holder at the intersection between the extending direction of the pull cord inlet and the extending direction of the pull cord outlet. The axial direction of the first guide roller obliquely intersects with the extending direction of the pull cord inlet, and defines with the extending direction of the pull cord outlet a contained angle smaller than 90-degrees. Thus, the lift-cord guide of the invention effectively reduces the turning angle of the pull cords, and smoothens the operation to open or close the blind slats.
A window body brake mechanism for non pull cord window blind includes a rolling-up unit including two coil spring winding wheels meshed together and a coil spring connected between the coil spring winding wheels, a transmission unit including two transmission gears respectively meshed with the coil spring winding wheels and two transmission cords respectively connected to the transmission gears, and a brake unit including an operating button having a braking portion disposed between the two coil spring winding wheels and so configured that when the operating button is operated into a press position, the braking portion is released from the coil spring winding wheels for allowing synchronous rotation of the coil spring winding wheels; when the operating button is operated into a release position, the braking portion is engaged with the coil spring winding wheels to stop the coil spring winding wheels from rotation.
A curtain cutting aid includes a curtain holder including an insertion space, an insertion slot in communication with the insertion space and a positioning portion disposed between the insertion space and the insertion slot, and a positioning unit including a movable bar inserted through the insertion slot into the insertion space and provided with spaced positioning grooves and an operating knob mounted in the curtain holder and coupled with the movable bar and movable between an initial position where one positioning groove of the movable bar is engaged with the positioning portion of the curtain holder to lock the movable bar in the insertion space, and a pressed position where the positioning groove of the movable bar is disengaged from the positioning portion of the curtain holder for allowing adjustment of the position of the movable bar according to the size of the curtain to be cut.
A blind body braking mechanism used in a non-cord window blind assembly is disclosed to include two take-up wheels, two one-way clutch units respectively disposed adjacent to the two take-up wheels and respectively provide one clutch wheel, two guide rods respectively disposed at one lateral side relative to one respective take-up wheel in a parallel manner relative to the axis of the take-up wheels, and two transmission cords respectively extending over one respective guide rod and wound round one respective one-way clutch wheel with respective one end thereof fixedly connected to one respective one-way clutch wheel. Subject to the functioning of the guide rods, the transmission cords can be properly wound round the respective take-up wheels.
A curtain body locating mechanism for use in a curtain with no cord comprises a fixed base, two first driving wheels, two second driving wheels, two movable shafts and two resistance wheels. The first driving wheels are disposed on the fixed base and connected together by a coil spring, and the second driving wheels are disposed on the fixed base and engaged with the first driving wheels. Each of two driving ropes is connected to each of the second driving wheels, and the two movable shafts are disposed on the fixed base movably in the horizontal direction and are connected together by a tension spring. The resistance wheel is nested onto the movable shaft rotatably and is surrounded by one of the driving ropes.
A curtain body locating mechanism of a curtain with no cord mainly utilizes two separation and reunion units to control the locating effect when a curtain body is being spread or folded. The separation and reunion unit comprises an axle, two braking blocks, a separation and reunion wheel and two planetary gears. The two braking blocks are spaced apart and connected to the periphery of the axle so that a rolling groove is formed between the two braking blocks. The separation and reunion wheel is nested onto the axle and has an inner ring gear surrounding the two braking blocks. Each of the planetary gears is disposed within one of the rolling grooves and engaged with the inner ring gear of the separation and reunion wheel.
A window body positioning mechanism of a non pull cord window blind includes two first transmission wheels, two transmission cords respectively connected with one ends thereof to the first transmission wheels, two second transmission wheels meshed together and respectively meshed with the first transmission wheels, a coil spring connecting the two second transmission wheels and selectively wound round one second transmission wheel, and two resistance units each including a one-way pawl and a resistance wheel wound by one respective transmission cord and meshed with the one-way pawl. Thus, when extending out or receiving the blind body, the friction resistance between the resistance wheels and the transmission cords and the engagement relationship between the resistance wheels and the respective one-way pawls help achieve excellent blind body positioning effects.
A window body positioning mechanism of a non pull cord window blind includes a transmission unit including two first transmission wheels meshed together, a coil spring connected between the first transmission wheels and wound round one first transmission wheel, two second transmission wheels respectively meshed with one respective first transmission wheel, and two transmission cords each having one end thereof fixedly connected to one respective second transmission wheel and being wound round the respective second transmission wheel upon its rotation, and a damper unit including a damper and a reel connected to the damper and wound round by one transmission cord in such a manner that when the blind body is being extended out or received, the damper imparts a damping resistance to the transmission cords through the reel to achieve excellent positioning effects.
A controlling mechanism for a cordless blind set includes a fastening seat, a controlling member, and two driving gears. A coil spring is between the two driving gears each engaged with a driven gear. Each of the driven gears is coupled with a transmission rope passing through the fastening seat and the controlling member and then gets fixed in an upper beam. To operate the blind set, a pushing force is applied to the controlling member to release the transmission ropes. The driving gears are then driven by the coil spring and rotate the driven gears simultaneously, so the driven gears can roll up/release the transmission ropes.
Disclosed herein are a biomass composite composition and a foaming method thereof. The biomass composite composition includes (a) polyester alloy containing biodegradable polyester and petrochemical plastic, (b) reinforcing agent, (c) foaming agent, (d) compatibilizer, (e) lubricant, and (f) impact modifier. The biomass composite composition of the present invention is biodegradable and of heat resistance and melt strength suitable for manufacture of foam products.
C08L 25/00 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ringCompositions of derivatives of such polymers
C08J 9/12 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
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