1. A Lyocell fiber having a hemicellulose content of between 3.5%-5% by weight and an average molar mass of xylans isolatable from the fiber of about 20 kDa or more.
2. The Lyocell fiber according to claim 1, wherein the fiber’s strength is 37 cNtex or more in the conditioned state.
3. A process for obtaining the Lyocell fiber according to claim 1 or 2 comprising:
1) producing a dissolving pulp from a cellulosic starting material using the kraft process which comprises the step of cooking the cellulosic starting material with a cooking liquor, wherein the cellulosic starting material is exposed to a steam treatment prior to cooking and wherein the pulp obtained by cooking is subjected to cold caustic extraction (CCE) in the course of further processing to form the dissolving pulp; and
2) spinning the dissolving pulp to form the Lyocell fiber.
4. The process according to claim 3, wherein the steam treatment is carried out at a temperature of 120\xb0 C. or more and a P-factor of 50 or less.
5. The process according to claim 3, wherein, for the steam treatment, the starting material is treated with medium-pressure steam at a temperature of from 150 to 180\xb0 C.
6. The process according to claim 3, wherein the starting material is subjected to an impregnation prior to cooking.
7. The process according to claim 3, wherein the cooking, the steam treatment and optionally the impregnation of the starting material are carried out in the same cooker.
8. The process according to claim 3, wherein the cooking is carried out in the form of continuous batch cooking (CBC).
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 steering wheel adapter that is interposed between a steering wheel and a boss of a vehicle and that enables attachment and detachment of the steering wheel to and from the boss, the steering wheel adapter comprising:
a base having an opening, the boss being attached to a face of the base opposite the opening;
a ring that covers an outer side face of the base and that is capable of sliding and rotating along the outer side face;
a guide hole penetrating the side face of the base from outside to the inside of the opening;
a cam face formed on an inner circumferential face of the ring so as to face the guide hole;
a locking member that is installed in the guide hole and that is capable of protruding into the opening by a press-out force generated by the cam face in accordance with slide and rotation of the ring;
a plate, to one end of which the steering wheel is attached;
a plug that is formed on a face opposite to the one face of the plate and inserted into the opening of the base, and an outer side face of which is pressed to contact the locking member protruding into the opening; and
a press-out assisting member that is interposed between the cam face and the locking member so as to be capable of moving to protrude and withdraw from the outer side face of the base along a penetration direction of the guide hole, and that conveys the press-out force generated by the cam face to the locking member,
wherein the press-out assisting member is a roller rotating on the cam face in accordance with slide and rotation of the ring.
2. The steering wheel adapter according to claim 1, further comprising:
a rotation blocker configured to block slide and rotation of the ring on the base, wherein the rotation blocker comprises:
facing holes that are formed in both the ring and the base and that face each other in a state where the locking member protrudes into the opening; and
a pin that is disposed slidable in the facing holes and that is capable of moving to a position where it crosses both the facing holes of the ring and the base and a position where it withdraws into the ring or the base.
3. The steering wheel adapter according to claim 2, further comprising:
a lever that is disposed so as to be capable of setting up from a side face of the ring and grasped by an operator, and which, when sets up, applies a pressing force with a tip to the pin to withdraw the pin into the base.
4. The steering wheel adapter according to claim 1, further comprising:
a groove formed with the same width as the cam face along a circumferential direction of the ring; and
a bump that is disposed on the base and that protrudes into the groove.
5. The steering wheel adapter according to claim 1, further comprising:
a ring-protrusion protruding and extending in the opening of the base on an inner face of the ring; and
a plate-protrusion protruding and extending from an outer face of the plate,
wherein the ring-protrusion and the plate-protrusion come in contact with each other in a shaft axis direction in a state where the locking member protrudes into the opening and presses to contact the outer side face of the plug.