1. A facemask roll includes a plurality of masks made of elastic nonwoven fabric having a center filtration body with extended ear-loops on two ends, wherein the facemask roll is characterized by the fact that facemasks are connected successively to each other and wound around a core to make a roll.
2. The facemask roll of claim 1 wherein the elastic nonwoven fabric is selected from a group of thermally bonded and entangled nonwoven webs and their film laminates, with single or multiple layered constructions.
3. A facemask roll of plane masks which is made by the method comprising the sequential steps of:
(a) a process of feeding in which a piece of elastic nonwoven fabric is delivered by an unwinding system;
(b) a process of die-cutting in which outlines of the plane rectangular strip facemask, the extended ear-loops, and the adjacent border lines between masks are molded;
(c) a process of winding in which a plurality of facemasks in a continuous flat strip can be wound on a core;
(d) a process of finishing in which a determined quantity of facemasks can be counted and separated to make a mask roll.
4. The facemask roll of claim 3 wherein the elastic nonwoven fabric is selected from a group of thermally bonded and entangled nonwoven webs and their film laminates, with single or multiple layered constructions.
5. A facemask roll of folded plane masks which is made by the method comprising the sequential steps:
(a) a process of feeding in which at least one or multiple pieces of elastic nonwoven fabrics can be delivered;
(b) a process of layering and folding in which one piece of full width elastic nonwoven fabric can be folded symmetrically along its laterally central line, or two pieces of half width elastic nonwoven fabric can be layered together and sealed on one side to become a folded double layer;
(c) a process of die-cutting in which outlines of the facemask, ear-loops, and the adjacent border lines between masks can be made.
(d) a process of winding in which a plurality of folded facemasks in a continuous flat strip can be wound on a core;
(e) a process of finishing in which a determined quantity of facemasks can be counted and separated to make a mask roll.
6. The facemask roll of claim 5 wherein the elastic nonwoven fabric is selected from a group of thermally bonded and entangled nonwoven webs and their film laminates, with single or multiple layered constructions.
7. A facemask roll of butterfly folded type masks made by the method comprising the sequential steps:
(a) a process of feeding in which at least one or multiple pieces of elastic nonwoven fabrics can be delivered;
(b) a process of layering and folding in which one piece of full width elastic nonwoven fabric can be folded symmetrically along its laterally central line, or two pieces of half width elastic nonwoven fabric can be layered together and sealed on one side to become a folded double layer;
(c) a process of welding and sealing in which the double-layered folded-form elastic nonwoven fabric can be welded and sealed on an upper side line (nose line) and a lower side line (chin line) to form a filtration cup of the facemask;
(d) a process of die-cutting in which perforated outlines of the facemask, ear-loops, and the adjacent border lines between masks can be made.
(e) a process of winding in which a plurality of folded facemasks in a continuous flat strip can be wound on a core;
(f) a process of finishing in which a determined quantity of facemasks can be counted and separated to make a roll.
8. The facemask roll of claim 7 wherein the elastic nonwoven fabric is selected from a group of thermally bonded and entangled nonwoven webs and their film laminates, with single or multiple layered constructions.
9. A facemask roll of butterfly folded type masks made by the method comprising the sequential steps:
(a) a process of feeding in which at least one or multiple pieces of elastic nonwoven fabrics can be delivered;
(b) a process of layering and folding in which one piece of full width elastic nonwoven fabric can be folded symmetrically along its laterally central line, or two pieces of half width elastic nonwoven fabric can be layered together and sealed on one side to become a folded double layer;
(c) a process of welding and sealing in which the double-layered folded-form elastic nonwoven fabric can be welded on an upper side line (nose line) and a lower side line (chin line) to form a filtration cup of the facemask, and the connecting points between adjacent masks are also made;
(d) a process of die-cutting in which outlines of the facemask and ear-loops can be molded.
(e) A process of punching to remove trims between masks and inside of ear-loops.
(f) a process of winding in which a plurality of folded facemasks in a continuous flat strip can be wound on a core;
(g) a process of finishing in which a determined quantity of facemasks can be counted and separated to make a roll.
10. The facemask roll of claim 9 wherein the elastic nonwoven fabric is selected from a group of thermally bonded and entangled nonwoven webs and their film laminates, with single or multiple layered constructions.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A liquid crystal display device, comprising an upper polarizer, a lower polarizer and a first liquid crystal cell arranged between the upper polarizer and the lower polarizer, characterized in that a second liquid crystal cell is further arranged between the upper polarizer and the first liquid crystal cell, the second liquid crystal cell comprising a first electrode, a second electrode and a first liquid crystal layer arranged between the first electrode and the second electrode, the first liquid crystal layer being a blue phase liquid crystal layer, the first electrode and the second electrode being used for forming a vertical electric field.
2. The liquid crystal display device according to claim 1, characterized in that the first liquid crystal cell comprises a pixel electrode, a common electrode, a second liquid crystal layer as well as a first substrate and a second substrate arranged opposite to each other, the pixel electrode and the common electrode being arranged on top of the first substrate for forming a horizontal electric field, the horizontal electric field being used for controlling deflection of liquid crystal molecules in the second liquid crystal layer.
3. The liquid crystal display device according to claim 2, characterized in that the second liquid crystal cell further comprises a third substrate, the first electrode being arranged at the bottom of the third substrate, the second electrode being arranged on top of the second substrate.
4. The liquid crystal display device according to claim 1, characterized in that optical compensation films are further arranged at the bottom of the upper polarizer and on top of the lower polarizer.
5. The liquid crystal display device according to claim 4, characterized in that the optical compensation films are uniaxial compensation films or biaxial compensation films.
6. The liquid crystal display device according to claim 1, characterized in that the first liquid crystal cell is any one of an IPS liquid crystal cell, a MVA liquid crystal cell and a PVA liquid crystal cell.
7. The liquid crystal display device according to claim 1, further comprising a control circuit for applying a voltage to the first electrode and the second electrode based on a received control signal so as to generate the vertical electric field.
8. The liquid crystal display device according to claim 2, further comprising a control circuit for applying a voltage to the first electrode and the second electrode based on a received control signal so as to generate the vertical electric field.
9. The liquid crystal display device according to claim 3, further comprising a control circuit for applying a voltage to the first electrode and the second electrode based on a received control signal so as to generate the vertical electric field.
10. The liquid crystal display device according to claim 4, further comprising a control circuit for applying a voltage to the first electrode and the second electrode based on a received control signal so as to generate the vertical electric field.
11. The liquid crystal display device according to claim 5, further comprising a control circuit for applying a voltage to the first electrode and the second electrode based on a received control signal so as to generate the vertical electric field.
12. The liquid crystal display device according to claim 6, further comprising a control circuit for applying a voltage to the first electrode and the second electrode based on a received control signal so as to generate the vertical electric field.