JPH01246432A - Production of shape-memory natural fiber yarn - Google Patents

Abstract

PURPOSE:To obtain the subject yarn having uniformly attached protein and capable of restoring from a stretched or contracted state, by immersing a feeding member of natural fiber in a protein solution, feeding the yarn to a hydration tank containing the protein solution, heating the yarn under twisting and finally untwisted with a spinner member. CONSTITUTION:A feeding member 2 of a natural fiber 1 is immersed in a protein solution in a tank 50. The natural fiber 1 attached with the protein is unwound and transferred from the feeding member 2. A hydration tank 37 provided with a guide roll 6 is placed in the middle of the transfer path of the fiber and the protein solution is stored in the hydration tank. The natural fiber is passed through the protein solution in the hydration tank 37 along the guide roll 6 to uniformly attach the protein to the fiber surface. The hydrated natural fiber 1' subjected to the above treatment is heated with a heater 5 under twisting at a twisting zone side and, immediately after the heating process, untwisted with a spinner member 3 and wound on a winding cylinder 4 to obtain the objective shape-memory yarn.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is made of natural fibers that have the appearance of ordinary natural fibers, but which retain their memory when heated in pretreatments such as soaking in hot water or exposing to steam. If you put a shrunken object in water and stretch it, if you dry it without applying any tension, it will remember when it shrunk and return to its original shrunken state, and then it will shrink again depending on the degree of heating. This relates to a method for producing a natural fiber memory shaped yarn which, when shrunk and dried under water and under tension, retains its memory before shrinking and returns to a state close to the state of the shrunk curve.

[Problems to be solved by conventional technology and invention]

Conventionally, filament yarns of thermoplastic synthetic fibers are twisted, heat-set, and then untwisted to create crimps in the single fibers, resulting in bulky and highly elastic yarns.

Moreover, crimped yarn has the disadvantage that weaving and knitting cannot be performed well because it is crimped.

The applicant has filed Japanese Patent Application No. 61-578445 and Japanese Patent Application No. 62-1.
When weaving and knitting, as in No. 51748, completely ordinary natural fibers, such as ordinary silk threads, are easy to weave and knit, but if they are then immersed in hot water or exposed to steam, they are heated during pretreatment. It remembers the memory of when it was shrunk and shrinks depending on the degree of heating, and even if you put something that has shrunk into water and it stretches, if you dry it without applying tension, it will remember the memory of when it shrunk and it will be close to its original shrunken state. Developed a manufacturing method and manufacturing device for memory-shape yarn which, when shrunk and dried under tension in water, remembers its memory before shrinking and returns to a state close to the state before shrinkage. We created a prototype machine, conducted repeated tests, and improved various aspects.

The present invention relates to improvements in protein adhesion and hydration.

[Means for solving problems]

The present invention solves these drawbacks, and will be detailed as follows with reference to the accompanying drawings.

When the natural fiber 1 is fed and wound onto the winding crimp 4 through the spinner body 3, the natural fiber 1 is immersed in a protein solution on the heating zone side, and the hydrated natural fiber 1' to which this protein is attached is immersed in a protein solution. In the production of memory-shaped yarn, the hydrated natural fibers 1 to which proteins have been attached are heated by a heating device 5 on the heating zone side, and then untwisted by a spinner body 3 immediately after heating. A water tank equipped with a guide roll 6 is provided in the middle of the yarn feeding of the natural fiber 1 which is immersed in a solution and has a protein attached thereto fed from the yarn feeder 2, and the protein solution is stored in the water tank. The yarn is fed along the guide roll 6 to uniformly attach the protein while adding water.

In addition, the protein solution is infiltrated into the thread supply body 2 under vacuum suction,
This yarn supply body 2 is immersed in a protein solution, and a hydration tank 37 equipped with a guide roll 6 is provided in the middle of the yarn feeding of the natural fiber 1 to which proteins fed from the yarn supply body 2 are attached. A protein solution is stored in d, and the yarn is fed along guide rolls 6 to uniformly attach the protein while adding water.

[For production]

To explain based on an example, the natural fiber 1 passing through the spinner body 3 becomes a heating zone below and an untwisting zone above the rotating roller 19 as a boundary.

When the water adding device a and the heating device 5 are arranged on this heating zone side, ・Heating in the S direction ・Wetting and heating (same result as heating with steam) ・Continuous untwisting in the Z direction This will be done in a specific manner.

When the natural fiber 1 is immersed in a protein solution and the protein-adhered thread is passed through a false twisting device, the protein adhering to the thread is heated with water and combined with the protein, which is an isomer of the thread. However, due to this bonding, the thread looks like a normal thread but shrinks when soaked in hot water.

This modified yarn is subjected to the usual post-vibration treatment and is spun into a product.

This thread looks like a normal natural fiber, but when it is soaked in hot water or exposed to steam, it retains the memory of being heated in the pretreatment process and shrinks depending on the degree of heating, and the shrunken material is dipped in water. Even if it stretches, if you dry it without applying tension, it will remember the memory of when it shrunk and will return to its original shrunken state, and if you soak it in water and dry it with tension, it will remember what it was before it shrunk. It becomes a natural fiber memory-shaped yarn that remembers this and returns to a state close to its original state before shrinking.

In this case, if protein addition and hydration are not sufficiently carried out to the core of the natural fiber, the molecular bonding between the post-treated protein and the protein of the yarn itself will not occur well, and the desired memory-shaped yarn will not be obtained. There was found.

The present invention involves immersing the yarn supplying body 2 in a protein solution, allowing the protein solution to penetrate into the inside of the yarn supplying body 2, and applying a special watering device to the natural fiber 1 to which the protein is attached. By guiding the natural fibers 1 along the guide roll 6 and adding water while making the protein adhesion uniform, the protein is sufficiently adhered to the yarn core and is evenly adhered. Water is added at the same time as the fiber is soaked, which improves the bond between the protein attached to the thread and the protein inherent in the thread.The desired appearance is a completely normal thread, but it is a modified thread that shrinks when soaked in hot water. will be obtained.

Alternatively, the yarn supplying body 2 is placed in a vacuum pot, for example, and the protein solution is injected after vacuum suction is applied, and the protein solution is forcibly penetrated into the yarn supplying body 2 to the inside under vacuum suction, and then the treatment is performed as described above. This will improve the addition of protein.

〔Example〕

When silk thread refined from natural W4 fibers is used, the above-mentioned molecular bonding between proteins can be carried out even better.

Furthermore, an amino acid solution may be used as the protein solution.

The drawing shows a case in which an amino acid solution is filled in a tank 50 equipped with a heater to maintain an appropriate temperature, and a cone-shaped yarn supply body 2 is immersed in the tank 50, but a yarn supply bobbin is used instead of the cone. may be adopted.

Although the drawing of the process of permeating the protein solution under vacuum suction is omitted, a normal vacuum pot may be used.

The guide roll 6 in the water adding device a shown in the figure has a fixed guide roll 6° made of ceramic with a small diameter and a rotating guide roll 6" with a large diameter arranged side by side, and the thread is detoured from the guide 40 to the fixed guide roll 6". By levering, air is expelled from the yarn core to improve white matter content and water absorption.

Also, a seesaw frame 42 attached to the support shaft 41
A gear shaft 43 is provided at one end, a driven gear material is provided on this gear shaft 43, a drive gear mesh is meshed with this driven gear, and a roll shaft 49 on the opposite side is formed by a chain 46 and a sprocket gear 47. The figure shows a configuration in which rotational power is transmitted to a rotating guide roll 6'' provided on the shaft, and the seesaw frame 42 is caused to move the driven gear shed away from the driving gear shaft, thereby cutting off the power transmission.

A small-diameter fixed guide roll 6'' is provided protruding from the side wall of the water tester, and thread section flanges 51 are arranged in parallel, and thread section flanges 52 are arranged in parallel on the rotating guide roll 6'', but the initial spacing between the flanges is set according to the twist. Since it does not fit, it is made wide.

The symbol A in the figure is the fixed guide auxiliary roll on the drawer side.

Furthermore, it is efficient to provide the water tank M with a heater 39 and impregnate it with heated water.

In addition, by using an electromagnetic heater that generates far infrared rays, the movement of water molecules is promoted, which improves the bond between the fiber's original protein and the pretreated protein, resulting in an excellent memory-shaped yarn. Become.

Furthermore, if the tension adjusting device 8 with a buffering effect is provided, the upper spinner bodies 3 that prevent yarn breakage are disposed above and below, and one spinner body 3 is sufficient without providing the heating device 5 between them. Since it exhibits a buffering effect so that a constant tension is always applied, it is possible to obtain a good memory shape yarn that shrinks uniformly without yarn breakage.

Alternatively, the spinner bodies 3 may be arranged one above the other and the heating device 5 may be provided between them. In this case, when the same rotation is applied to the upper and lower spinner bodies 3, the twisting between the upper spinner body 3 and the lower spinner body 3 is not untwisted, but the twisting is stopped while remaining in the heating zone, and the twisting is stopped and the twisting is stopped while the upper spinner body 3 is passed through the upper spinner body 3. It will be untwisted for the first time.

Further, it is recommended that the wound memory shape yarn be stored in a normal steam room at about 40° C. for about 15 to 20 minutes for post-vibration prevention treatment.

A yarn holding idle roller twist may be provided above the feed-out roller 7.

The tension adjusting device 8 is shown in the figure in which the thread is passed between the polymerizers 14 and 14' which are pressed by a spring 13 for polymerization.

Although various structures can be adopted for the heating device 5, it is preferable to use an electromagnetic wave heater of the type in which a heater that generates far infrared rays is built into the tube wall and 1 degree of hydrated natural fiber passes through the center of the tube. A method of passing 1° of hydrated natural fibers through the heater may also be used.

As shown in Fig. 2, an oil heating cylinder 5 is provided inside the case cylinder U, oil heated to a constant temperature is passed through the heating cylinder 5, and 1 degree of hydrated natural fiber is brought into contact with the oil heating cylinder 5. By adopting this, heating management at a constant temperature becomes easier than when using an electric heat source.

In this case, the oil heating tube 5 may be bent to ensure contact with the hydrated natural fibers 1.

As shown in FIG. 4, the spinner body 3 is provided with a bearing cylinder on the upper part of the spindle cylinder 20, which rotates at high speed and is supported by a holding cylinder 31 with a bearing inside, with which the belt is in pressure contact. Bearings n-to are set upright facing each other,
A support shaft 10 fixed to this bearing 28-28' with a screw 32
・The rotating roller 19, which has a thread receiving recess 19'' with a 10° angle, is rotatably provided via a hair ring so as not to generate noise and to ensure smooth rotation, and placed above the center of the spindle sleeve. The structure in which the spindles 10 and 10 degrees are arranged eccentrically so that 1 degree of hydrated natural fiber is wound around the thread receiving recess 19' of the rotating roller 19 prevents thread breakage of weak natural fibers and reduces needle thread wobbling. desirable.

If the rotational speed of the spindle tube 20 is increased or decreased by increasing or decreasing the rotational speed of the take-up roller 9 or the driving speed of the heald 18, the degree of heat untwisting by the spinner body 3 will differ, and as a result, the degree of shrinkage will also be variable. It will be possible.

After untwisting, the post-stretching treatment may be carried out by exposing the fabric to steam emitted from hot water of 60° C. or lower for 15 minutes or more.

The present invention can be applied to any yarn containing natural fiber protein.

In the figure, reference numeral 11 is a bolt, 21 is a thread guide, 22 is a drag pass guide, 16 is a ceramic, and 23 is a heater.

I is a heat insulating part, 30 is a support shaft 10 and a sharp part of 10 degrees, 35 is a surf ace roller, 场 is a winding roller, 53 is a buffer guide roller, 8 is a buffer, and 55 is a guide.

〔Effect of the invention〕

As described above, the present invention uses natural fibers as processed yarns when heated yarns are heat-treated and untwisted, and the natural fibers are immersed in a protein solution to attach proteins, and the yarns are immersed in the protein solution. Since water is sufficiently added to the yarn core by letting the yarn pass through the water, the proteins attached to the yarn during heat treatment and the proteins inherent in natural fibers are molecularly bonded, and due to this molecular bonding action and heat untwisting action, they are When immersed or exposed to steam, it looks like a normal natural fiber, but it retains the memory of being heated during pretreatment and shrinks depending on the degree of heating, and even if it stretches when it is dipped in water, the tension remains. If you dry it without putting it on, it will remember the memory of when it shrunk and return to a state close to its original shrunken state, and if you put the shrunk item in water and dry it under tension, it will remember the memory of shrinking and will shrink. It will be modified into a memory shape yarn with natural fibers that will return to a state close to its previous original state.

At this time, protein adhesion and hydration are performed by immersing the thread supply body in a protein solution to allow the protein to penetrate sufficiently into the inside, then storing the protein solution in a hydration tank, and immersing the guide partially or completely in this protein solution. By feeding natural fibers along a roll, protein adhesion is made uniform and water is added at the same time, resulting in a superior modified yarn.

In addition, if the protein solution is forcibly permeated into the yarn supplying body under vacuum suction, the protein solution will adhere even better.

This memory-shaped yarn is normally a normal natural fiber, such as silk, so it is easy to weave and knit, and by making it into various products and then treating it with heated water, it can be modified into products that exhibit the desired elasticity. Even if the product stretches a little after washing, it will return to its original elasticity after drying, and it can also be returned to its original state before heated water treatment, which does not exhibit elasticity.It has a wide range of applications. It is possible to produce a wide range of natural fiber memory shape yarns.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show one embodiment of the present invention, and FIG. 1 is an explanatory diagram of the present device, FIG. 2 is a partially cutaway perspective view of the heating device, and FIG.
FIG. 3 is a perspective view of another heating device, FIG. 4 is a partially cutaway side view of the spinner body, and FIG. 5 is a front sectional view of the bottom part.
Fig. 6 is a plan view of the spinner body, Fig. 7 is a perspective view before fitting the concealing cylinder with the bearing, Fig. 8 is a sectional view of the fitted state, Fig. 9 is a plan view thereof, and Fig. 1O. 1 is a plan view of the water adding device section, and FIG. 1f is a front sectional view thereof. 1...Natural fiber, 1°...Hydrated natural fiber, 2...
Yarn feeder, 3... Spinner body, 4... Winding cylinder, 5... Heating device, 6... Guide roll, d...
・Water tank. 7ri 40 7e Ishi 1 12 Jun 79 side 76/fA

Claims (1)

[Scope of Claims] 1. A hydrated natural fiber in which the natural fiber is dipped in a protein solution on the twisting zone side when the natural fiber is fed and wound onto a winding cylinder via a spinner body, and the protein is attached to the natural fiber. In the production of memory shape yarn, the fibers are heated by a heating device on the twisting zone side to twist the hydrated natural fibers to which proteins have been attached, and immediately after heating, they are untwisted by a spinner body. A hydration tank equipped with a guide roll is provided in the middle of the yarn feeding of the natural fibers, which are immersed in water and coated with proteins fed from the yarn supplying body.A water addition tank equipped with a guide roll is provided in the yarn feeding tank, and a protein solution is stored in this water addition tank, and the protein solution is fed along the guide roll. A method for producing a natural fiber memory-shaped yarn, which is characterized by adding water while uniformly attaching proteins by threading. 2. When natural fibers are fed and wound onto a winding cylinder via a spinner body, the natural fibers are immersed in a protein solution on the twisting zone side, and the hydrated natural fibers with the protein attached are immersed in a protein solution on the twisting zone side. In the production of memory shape yarn, in which hydrated natural fibers to which proteins are attached are heated by a heating device and twisted, and then untwisted by a spinner body immediately after heating, a protein solution is permeated into a yarn supplying body under vacuum suction. The yarn feeding body is immersed in a protein solution, and a water tank equipped with a guide roll is provided in the middle of feeding the natural fibers to which proteins fed from the yarn feeding body are attached, and the protein solution is added to this water tank. A method for producing natural fiber memory-shaped yarn, characterized by adding water while storing and feeding the yarn along guide rolls to make protein adhesion uniform.