1. A tamper-evident closure for a bag that comprises a tube having at least one layer of polymeric material, the closure comprising:
a first strip and a second strip at a first end of the bag, the first and second strips configured to transition between an open strip position in which the first and second strips are separated from each other and a closed strip position in which the first and second strips are in abutting contact with each other to thereby form a strip seal; and
a bag seal zone between a second end of the bag and the first and second strips, wherein the second end of the bag is opposite the first end of the bag, wherein the bag seal zone is closer to the first end of the bag than to the second end of the bag, and wherein the bag seal zone comprises an inner surface of a front wall region of the tube in abutting contact with an inner surface of a back wall region of the tube,
wherein the at least one layer of polymeric material comprises the abutting inner surfaces of the front and back wall regions, and wherein the abutting inner surfaces comprise a heat seal.
2. The closure of claim 1, wherein the heat seal allows the inner surfaces of the front wall and back wall regions to peelingly separate and unseal the inner surfaces of the front and back wall regions without substantial damage to the inner surfaces when the bag is initially opened.
3. The closure of claim 1, wherein the polymeric material comprises at least one of polyethylene, polypropylene, nylon, ethylene vinyl acetate, ethylene vinyl alcohol, maleic anhydride grafted polyethylenes and propylenes, and polyesters.
4. The closure of claim 1, wherein the at least one layer of polymeric material is formed by at least one of extrusion, co-extrusion, lamination, and coating processes.
5. The closure of claim 1, wherein the heat seal extends substantially the entire lengthwise extent of the bag seal zone and substantially the entire widthwise extent of the bag.
6. The closure of claim 1, wherein the bag seal zone is configured to transition from an initial closed orientation to an open orientation without returning to the closed orientation.
7. The closure of claim 6, wherein the bag seal zone, when in the closed orientation, substantially prevents movement of product from a position between the second end of the bag and the heat seal zone to a position between the heat seal zone and the first and second strips.
8. The closure of claim 7, further comprising a fin member of which at least a portion is disposed between the heat seal zone and the first and second strips, wherein the fin member is configured to transition from a closed orientation to an open orientation.
9. The closure of claim 1, further comprising a fin member of which at least a portion is disposed between the heat seal zone and the first and second strips, wherein the fin member is configured to transition from a closed orientation to an open orientation.
10. The closure of claim 9, wherein the fin member defines a score line along which the fin member is configured to be separated to move to the open orientation.
11. The closure of claim 1, wherein the first and second strips comprise zipper tracks.
12. The closure of claim 11, further comprising a zipper block that is configured to transition the first and second strips between the open strip position and the closed strip position.
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. An electric power steering apparatus for calculating a steering assist command value based on a steering torque and a velocity, generating a PWM signal based on said steering assist command value, PWM-controlling a motor via a motor drive circuit comprised of switching elements, and assist-controlling a steering system that an electromagnetic type motor relay is inserted between said motor drive circuit and said motor, comprising:
a steering status detecting section that detects a steering status of a steering wheel, outputs a longtime steering holding signal when detecting that said steering status is a longtime steering holding status, and outputs a normal steering signal when detecting that said steering status is a normal steering status, and
a motor current control section that determines a motor current control value for controlling a motor current flowing in said electromagnetic type motor relay in accordance with said longtime steering holding signal or said normal steering signal that is outputted from said steering status detecting section,
wherein said steering status detecting section detects a steering status at a time that a given time elapses from a time of determining that said steering status is a steering holding status as said longtime steering holding status.
2. An electric power steering apparatus according to claim 1, wherein when said longtime steering holding signal from said steering status detecting section is inputted into said motor current control section, via said motor current control section, in accordance with said motor current control value corresponding to said longtime steering holding signal, control so as to decrease said motor current to a maximum limit desired value within a motor current decline time based on a given decrease rate,
when said normal steering signal from said steering status detecting section is inputted into said motor current control section, via said motor current control section, in accordance with said motor current control value corresponding to said normal steering signal, control so as to increase said motor current that is decreased to said maximum limit desired value and recover.
3. An electric power steering apparatus according to claim 2, wherein an increase rate in control of said motor current is more than a normal time.
4. An electric power steering apparatus according to claim 3, wherein said motor is a three-phase brushless DC motor.