JPH01183534A - Production of shape-memorizing yarn of natural fiber - Google Patents

Abstract

PURPOSE:To obtain the title yarn having appearance of ordinary yarn, shrinking by immersing in warm water, by coating natural yarn with protein in a heating zone of false twisting and crimp processing process for natural fiber and simultaneously hydrating. CONSTITUTION:In subjecting natural yarn 1 to false twisting and crimp processing process through a heater 5 and a spinner 3, the natural yarn is coated with protein and simultaneously by a hydrating device (a) charged with a protein solution in a hydrating bath 37 equipped with a guide roll 6 at the heating zone side. The protein is penetrated into the core of the yarn and the yarn is hydrated to give excellent shape-memorizing yarn of natural fiber.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention has the appearance of a normal natural fiber, but when it is soaked in hot water or exposed to steam, it retains the memory of being heated during pretreatment. It 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 when it shrunk and return to its original shrunk state, and then shrink again. This relates to a method for producing natural fiber memory-shaped yarn that, when soaked in water and dried under tension, remembers its memory before shrinking and returns to a state close to its state before shrinking.

[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.

Since such crimped yarns are crimped, they have the disadvantage that weaving and knitting cannot be carried out well.

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

The present invention relates to protein attachment 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 cylinder 4 via 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 the protein is attached is heated. In the production of memory shape yarn, which is heated by a heating device 5 on the zone side to heat 1° of hydrated natural fibers to which proteins have been attached, and then untwisted by a spinner body 3 immediately after heating, a guide roll is used in the middle of yarn feeding. A water addition tank equipped with a water tank 6 is provided, a protein solution is stored in this water tank field, and by feeding the natural fiber 1 along the guide roll 6, protein can be attached to the natural fiber 1 and water can be added at the same time. This is a characteristic feature.

[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 assistant.

When the same rotation is given 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 remains in the heating zone, and the twisting is stopped until it passes through the upper spinner body 3. It will be twisted.

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, which binds 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 processed in the usual way and made into a product as certified yarn.

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, it was found that if the protein and hydration were not sufficiently applied to the core of the natural fiber, the molecular bonding between the post-treated protein and the protein of the yarn itself would not occur well, and the desired memory-shaped yarn could not be obtained. did.

The present invention employs a special water adding device a in which a protein solution is stored in a water adding tank equipped with guide rolls 6, and the natural fibers 1 are placed along the guide rolls 6 to perform water supply and protein attachment at the same time. The protein is sufficiently attached and hydrated to the thread core, and the bond between the protein attached to the thread and the protein inherent in the thread is improved, and the desired appearance is that of a completely normal thread. , resulting in a modified yarn that shrinks when soaked in hot water.

〔Example〕

When refined silk thread is used as the natural fiber 1, the above-mentioned molecular bonding between proteins is more effectively achieved.

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

The guide roll 6 in the water adding device a shown in the figure has a small-diameter fixed guide roll 6'' made of ceramic and a large-diameter rotating guide roll 6'' arranged side by side, and allows the yarn to bypass the guide 40 and the fixed guide roll 6'. By levering, air is expelled from the yarn core to improve protein and water retention.

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 driving gear 6 is meshed with this driven gear 44, and the roll shaft 4 on the opposite side is The figure shows a case 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 material away from the driving gear, thereby cutting off the power transmission.

The fixed guide roll 6° with a small diameter is provided protruding from the side wall of the hydration tank group, and thread section flanges 51 are installed in parallel, and the rotating guide roll 6° is also provided with yarn section flanges 52 in parallel, but the initial spacing between the flanges is Since there is no twist, it is made wide.

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

Furthermore, it is efficient to provide a heater 39 in the water tank # to 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 n 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 for polymerization by a spring.

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 may also be used in which the hydrated natural fibers 1' are passed through the heater.

As shown in Fig. 2, an oil heating device is provided inside the case, oil 3 heated to a constant temperature is passed through this heating tube 5, and the hydrated natural fiber 1° is brought into contact with this oil heating tube 2. 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 unit 20 which rotates at high speed while being supported by a holding cylinder 31 containing a bearing (within which the belt is in pressure contact). Bearings 2 and 3 are set upright facing each other, and a rotating roller W having a thread receiving recess η of a Tsuzumi type is rotated by a support shaft 1G fixed to this bearing 2 with a screw blade so as not to make noise. Bearings (
The hydrated natural fiber 1 is placed in the yarn receiving recess η of the rotating roller W above the center of the spindle.
A structure in which the spindles are eccentrically arranged at 10° and 10° so as to be wound around each other is desirable because it prevents thread breakage of weak natural fibers and reduces needle thread runout.

If the rotational speed of the spindle is adjusted by increasing or decreasing the rotational speed of the take-up roller 9 or the driving speed of the belt, the degree of heating and untwisting by the spinner body 3 will differ, and as a result, the degree of shrinkage will also change. This means that it can be changed.

Post-treatment to prevent looseness after untwisting is done using water vapor emitted from normal hot water below 60℃! You can also leave it on for 5 minutes or more.

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

In the figure, 2 is a yarn feeding bobbin, 11 is a bolt receiver, 21 is a yarn guide, 22 is a drape guide, 1fi is a ceramic,
23 is a heater, 27 is a heat insulator, 30 is a support shaft 10.
35 is a surf ace roller, and 35 is a winding roller.

〔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 soaked 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. If you dry it without applying tension, it will remember the memory of when it shrunk and will return to a state close to its original shrunken state, and if you soak it in water and dry it with tension, it will remember the memory of before it shrunk. It is transformed into a shape-memory yarn made of natural fibers that returns to a state close to its original state before shrinking.

At this time, protein attachment and hydration can be carried out simultaneously by storing a protein solution in a hydration tank and feeding the natural fiber along a guide roll partially or completely immersed in the protein solution. This means that the fibers can be sufficiently distributed to the yarn core, making it possible to obtain a modified yarn that is more efficient and superior in quality.

This memory shape yarn is easy to weave and knit because it is normally silk with a natural edge of 1 iN, and it can be modified into products that exhibit the desired elasticity by processing it with heated water after making it into various products. Even if it stretches a little after washing, it can return to its original elasticity after drying, and it can also be used to return to its original state before heated water treatment, which does not exhibit elasticity. A wide range of natural fiber memory shape yarns can be produced.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an explanatory diagram of the device, FIG. 2 is a partially cutaway perspective view of the heating device,
FIG. 3 is a perspective view of another heating device, FIG. 4 is a side view with a part of the spinner body cut away, and FIG. 5 is a front sectional view of the main 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. 10. 11 is a plan view of the water adding device section, and FIG. 11 is a front sectional view thereof. 1...Natural fiber, 1°...Hydrated natural fiber, 3...
Spinner body, 4... Winding cylinder, 5... Heating device, 6... Guide roll, Correction... Water tank. -su/6tJ 76 shield 2 α f3/p73 sif

Claims (1)

[Claims] When feeding natural fibers and winding them onto a winding cylinder via a spinner body, the natural fibers are immersed in a protein solution on the heating zone side, and the hydrated natural fibers with the protein attached are heated by a heating device on the heating zone side. In the production of memory shape yarn, in which hydrated natural fibers to which proteins are attached are heated and untwisted using a spinner body immediately after heating, a hydration tank equipped with a guide roll is provided in the middle of yarn feeding, and this A method for producing a natural fiber memory shape yarn characterized by storing a protein solution in a water tank and feeding the natural fiber along a guide roll to attach protein to the natural fiber and at the same time adding water.