JP2009001316A - Transparent and high strength fastening band, fastening band kit, head for fastening band and strap for fastening band - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transparent and high strength fastening band made of a conventionally unrealized polyamide resin composition as to a fastening band provided with a strap arranged/lined with teeth on its surface and a head with a passage for the strap to be inserted for fastening an item such as a cable by engaging a tab provided in the passage and the teeth. <P>SOLUTION: This relates to a fastening band whose strap and head are made of a polyamide resin composition whose storage elasticity (E') is within a range of 1×10<SP>8</SP>to 5×10<SP>9</SP>Pa at temperatures between 30-100°C and which has loss modulus (E") peak in a temperature range of at least 90°C as to its dynamic viscoelasticity measured based on the prescriptions of JIS K7198. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a transparent and high-strength binding band and a binding band kit, and a binding band head and a binding band strap.

  Conventionally, a binding band made of a resin has been widely used for binding an article, typically an elongated article such as a cable. The binding band includes a strap having teeth arranged on the surface and a head having a passage into which the strap can be inserted. The passage is provided with claws that do not mesh with the teeth of the strap when moving the strap in the direction of insertion into the passage and mesh with the teeth of the strap when moving the strap in the direction of pulling out from the passage. The strap is deformed into a loop so as to wrap a binding object such as a cable, and is inserted into the passage and meshed with the teeth and claws, so that the strap retracts from the position where the teeth and claws are meshed with each other. The binding object can be bundled without any problem.

  Various types of resin can be used for the binding band. For example, a binding band using a polyamide resin typified by nylon has high strength while ensuring the toughness required as a binding band. Excellent wear resistance.

  On the other hand, a transparent binding band that can visually recognize the surface of a target object in a state where the target object is bound has been recently demanded. There are binding bands using polyolefin resins such as PP (polypropylene) and PE (polyethylene) as binding bands with high transparency, but these bands have low transparency and are substantially translucent. Not too much. Moreover, the strength of these bands is inferior to that of a binding band using a polyamide resin, and the conventional binding band using a polyamide resin is opaque. Therefore, it is desired to realize a binding band that is transparent while having high strength derived from the polyamide resin.

The binding band includes an integrated binding band having a structure in which the head and the strap are integrated, and a separate binding band in which the head and the strap are separated and combined with each other when used. An example of an integral binding band is disclosed in Patent Document 1, for example.
Japanese Patent Laying-Open No. 2005-187070

  However, a transparent and high-strength binding band made of a polyamide-based resin composition containing a polyamide resin has not been realized so far. This is because the polyamide resin composition having transparency is known, but the shape of the binding band is long due to the provision of the strap, but it is complicated with fine portions such as teeth and nails arranged in a row. This is because it is difficult to form a high-strength and transparent binding band by overcoming this difficulty because of its shape.

  Therefore, an object of the present invention is to provide a transparent and high-strength binding band made of a polyamide-based resin composition, which could not be realized conventionally.

The transparent and high-strength binding band of the present invention (integrated binding band) includes a band-shaped strap having teeth arranged on the surface, a head integrated with the strap, and a passage through which the strap can be inserted. Is provided. The passage is provided with a claw that does not mesh with the teeth when the strap is moved in the direction of insertion into the passage and meshes with the teeth when the strap is moved in a direction of being pulled out of the passage. In the binding band of the present invention, the strap is deformed into a loop so as to wrap the object to be bound, and is inserted into the passage so that the teeth and the claws are engaged with each other, whereby the teeth and the claws are engaged with each other The object can be bundled without the strap retracting from the position. Here, the strap and the head have a storage elastic modulus (E ′) in a temperature range of 30 to 100 ° C. of 1 × 10 ^{8 to} 5 × 10 ^{9 in} terms of dynamic viscoelasticity measured based on the provisions of JIS K7198. It consists of a polyamide-based resin composition that is in the range of Pa and has a peak of loss elastic modulus (E ″) in a temperature range of 90 ° C. or higher.

A transparent and high-strength binding band kit (separated binding band) according to the present invention includes a belt-shaped strap having teeth arranged on the surface and a head having a passage into which the strap can be inserted. The passage is provided with a claw that does not mesh with the teeth when the strap is moved in the direction of insertion into the passage and meshes with the teeth when the strap is moved in a direction of being pulled out of the passage. In the binding band kit of the present invention, the strap is deformed so as to wind the object to be bound, and each end of the strap is inserted into the passage so that the teeth and the claws are engaged with each other. The object can be bound without the strap retracting from the position where the claw is engaged. Here, at least one selected from the strap and the head has a storage elastic modulus (E ′) in a temperature range of 30 to 100 ° C. of 1 × 10 ^{8 with} respect to dynamic viscoelasticity measured based on JIS K7198. It consists of a polyamide-based resin composition having a peak of loss elastic modulus (E ″) in a temperature range of ˜5 × 10 ⁹ Pa and in a temperature range of 90 ° C. or higher.

The binding band head of the present invention is used as a binding band in combination with a band-shaped strap having teeth arranged on the surface. The head according to the present invention has a passage into which the strap can be inserted, and the passage is not engaged with the teeth when the strap is moved in the insertion direction into the passage, and the strap is pulled out from the passage. Claws that mesh with the teeth are arranged when moving in the direction. The head of the present invention has a storage elastic modulus (E ′) in a temperature range of 30 to 100 ° C. in the range of 1 × 10 ^{8 to} 5 × 10 ⁹ Pa with respect to dynamic viscoelasticity measured based on the provisions of JIS K7198. And a polyamide-based resin composition having a loss elastic modulus (E ″) peak in a temperature range of 90 ° C. or higher.

The strap for a binding band according to the present invention is a belt-like strap having teeth arranged on the surface, and has a passage into which the strap can be inserted, and the direction in which the strap is inserted into the passage. It is used as a binding band in combination with a head in which a claw that engages with the teeth is arranged when the strap is moved in the direction of pulling out from the passage. The strap of the present invention has a storage elastic modulus (E ′) in a temperature range of 30 to 100 ° C. in a range of 1 × 10 ^{8 to} 5 × 10 ⁹ Pa with respect to dynamic viscoelasticity measured based on JIS K7198. And a polyamide-based resin composition having a loss elastic modulus (E ″) peak in a temperature range of 90 ° C. or higher.

  According to the present invention, a transparent and high-strength binding band can be realized by using a polyamide-based resin composition that satisfies a specific dynamic viscoelasticity in a specific temperature range related to molding.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view showing an example of a binding band (integrated binding band) of the present invention. A binding band 1 shown in FIG. 1 includes a strap 2 and a head 3 integrated with the strap at one end of the strap 2. On one main surface of the strap 2, teeth 11 are arranged in a row, and the direction in which the edges of the teeth 11 extend is the short direction of the strap 2. The head 3 has a passage 12 through which the strap 2 can be inserted. The passage 12 is provided with a claw 13 that does not mesh with the teeth 11 when the strap 2 is moved from the other end in the direction to be inserted into the passage 12 and that meshes with the teeth 11 when the strap 2 is moved in the direction of being pulled out from the passage 12. Has been.

  FIG. 2 shows an enlarged view of the head 3 with the strap 2 inserted in the binding band 1. As shown in FIG. 2, the shape of the teeth 11 provided side by side with the strap 2 is a saw shape, and the surface of the claw 13 that contacts the strap 2 has a shape corresponding to the shape of the teeth 11. The claw 13 has flexibility, and when the strap 2 is moved in the direction in which the strap 2 is inserted into the passage 12 (the direction of arrow A in FIG. 2), the claw 13 is bent in a direction away from the teeth 11. The strap 2 can move in this direction without meshing the teeth 11 and the claws 12. On the contrary, when the strap 2 is moved in the direction in which the strap 2 is pulled out from the passage 12 of the head 3 (the direction of arrow B in FIG. 2), the claw 13 meshes with the teeth 11 without bending, and the strap 2 Movement in the direction (ie, retraction of the strap 2) is inhibited.

  As shown in FIG. 3, with respect to such a binding band 1, the strap 2 is deformed in a loop shape so as to wrap the binding object 51, and is inserted into the passage 12 of the head 3 to engage the teeth 11 and the claws 12. Thus, the binding object 51 can be bound without the strap 2 retreating from the position where the teeth 11 and the claws 12 are engaged with each other.

Here, the strap 2 and the head 3 have a storage elastic modulus (E ′) in a temperature range of 30 to 100 ° C. of 1 × 10 ^{8 to} 5 × 10 ^{9 in} terms of dynamic viscoelasticity measured based on the provisions of JIS K7198. The polyamide resin composition (A) is in the range of Pa and has a peak of loss elastic modulus (E ″) in a temperature range of 90 ° C. or higher. The binding band 1 has high strength derived from the polyamide resin and is transparent.

  As described above, since the shape of the binding band is a shape having a high degree of difficulty in molding, it has heretofore been difficult to overcome this difficulty and form a high-strength and transparent binding band. As a result of intensive studies, the present inventors have found for the first time that a high-strength and transparent binding band can be realized by the resin composition (A) having the above-mentioned characteristics with respect to dynamic viscoelasticity.

  According to the study by the present inventors, the storage elastic modulus (E ′) of the resin composition in the temperature range of 30 to 100 ° C. corresponding to the temperature of the molding process is the solidification of the resin necessary for forming a transparent binding band. It was found to be important for ensuring speed, solidification state (hardness) and releasability. The binding band is typically formed by injecting a molten resin into a mold, but in order to obtain a transparent binding band, the injected resin needs to be quickly cooled. For this reason, in addition to having a shape with a high degree of molding difficulty, in order to form a more transparent binding band, the resin solidification speed, solidification state, and mold release properties in the temperature range of 30 to 100 ° C. are extremely high. It becomes important. The storage elastic modulus (E ′) of the resin composition (A) in the temperature range of 30 to 100 ° C. is in the above range, and the above characteristics necessary for forming a transparent binding band can be ensured.

  When the storage elastic modulus (E ′) in the temperature range of 30 to 100 ° C. is larger than the above range, the solidification rate of the resin composition at the time of molding is excessively high, and the flow of the resin composition necessary for forming a binding band Sex cannot be secured. In this case, the resin composition is too hard and cracks are likely to occur during molding. On the other hand, when it is smaller than the above range, the release property of the resin during the molding process is lowered, and it becomes difficult to form a binding band.

  According to the study by the present inventors, it was found that the temperature at which the peak of the loss elastic modulus (E ″) of the resin composition is located (peak temperature) is important in order to obtain a transparent binding band. It was. When the peak temperature is located at the temperature of the molding process, specifically, when it is less than 90 ° C., the resin composition is crystallized during the molding process and becomes translucent or opaque. The peak temperature of the loss elastic modulus (E ″) of the resin composition (A) is 90 ° C. or higher, and a transparent binding band can be obtained.

The storage elastic modulus (E ′) in the temperature range of 30 to 100 ° C. of the resin composition (A) is preferably in the range of 2 × 10 ^{8 to} 3 × 10 ⁹ Pa, and 3 × 10 ⁸ to 2 × 10. More preferably, it is in the range of ⁹ Pa. The solidification speed, solidification state (hardness) and releasability of the resin composition (A) during the formation of the binding band can be further improved.

  The resin composition (A) preferably has a loss elastic modulus (E ″) peak in a temperature range of 100 ° C. or higher. Such a resin composition is more amorphous and can more reliably obtain a transparent binding band.

Moreover, it is preferable that the storage elastic modulus (E ') in the 70-100 degreeC temperature range of a resin composition (A) is 9 * 10 < ⁸ > Pa or less. In this case, the fluidity can be improved while securing the releasability of the resin composition when forming the binding band, and for example, a larger (long) binding band can be stably formed.

  The specific composition of the resin composition (A) is a polyamide-based resin composition containing a polyamide resin, and is not particularly limited as long as it satisfies the above-mentioned regulations regarding dynamic viscoelasticity. The resin composition (A) is, for example, Amorphous polyamide may be included.

  The kind of the amorphous polyamide is not particularly limited. For example, at least one diamine selected from an aromatic diamine, an arylaliphatic diamine, and an alicyclic diamine, and a dicarboxylic acid containing 50% by mole or more of tetradecandioic acid. Amorphous polyamide (B) obtained by condensation with an acid may be used.

  The diamine is, for example, an alicyclic diamine having two alicyclic rings, and has a structure represented by the following formula (1) as an example.

In the above formula (1), R _{1 to} R ₄ are selected from a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and may be the same or different from each other, and X is a single bond or the following ( a divalent group selected from a) to (d):
(A) a linear or branched aliphatic chain having 1 to 10 carbon atoms (b) an alicyclic group having 6 to 12 carbon atoms (c) an alicyclic group having 6 to 8 carbon atoms A linear or branched aliphatic chain having 1 to 10 carbon atoms which may be substituted with (d) a linear or branched dialkyl having a cyclohexyl group or a benzyl group having 8 to 12 carbon atoms Group of.

  The amorphous polyamide (B) may be a polyamide obtained by condensation of the at least one diamine and a dicarboxylic acid containing 70% by mole or more of tetradecandioic acid, and the at least one diamine and Polyamide obtained by condensation with tetradecandioic acid may be used.

  The amorphous polyamide (B) is excellent in fluidity, releasability and amorphousness when forming a binding band, and is made into a polyamide resin composition (A) containing the amorphous polyamide (B). Thus, a transparent binding band can be obtained stably.

  The high degree of difficulty in forming a transparent binding band is due to the fact that the type of release agent is limited in order to ensure the transparency of the resin composition. For example, when forming an opaque binding band, it is possible to ensure the release property of the resin composition during the molding process by adding various release agents widely used in the molding process. However, in order to obtain a transparent binding band, that is, to ensure the transparency of the resin composition, a release agent that generally has a refractive index different from that of the resin composition and can be a light scattering source is used as an opaque binding band. It is difficult to use in the same way as when forming a band. On the other hand, in the resin composition (A) containing the amorphous polyamide (B), although it depends on the specific shape of the binding band and the molding process conditions, the resin can be released without adding a release agent. It is also possible to ensure the sex.

  When the resin composition (A) contains an amorphous polyamide (B), the resin composition (A) may contain another polyamide, for example, a semicrystalline polyamide. 11 and / or polyamide 12.

  Moreover, when the resin composition (A) contains an amorphous polyamide (B), the resin composition (A) may contain, for example, a polyetheramide block copolymer. Such a resin composition (A) is excellent in fluidity at the time of molding.

  The resin composition (A) may contain a resin other than polyamide as long as it satisfies the above provisions on dynamic viscoelasticity, and various kinds of release agents, etc., as necessary, as long as a transparent binding band is obtained. The additive may be included.

  The binding band of the present invention may be a separation type binding band in which the head and the strap are separated, that is, a binding band kit including the strap and the head.

  FIG. 4 is a plan view showing an example of a strap constituting the binding band kit of the present invention, and FIG. 5 is a plan view showing an example of a head constituting the binding band kit of the present invention. On one main surface of the strap 4 shown in FIG. 4, teeth 11 are arranged in a row, and the direction in which the edges of the teeth 11 extend is the short direction of the strap 4. The head 5 shown in FIG. 5 has a pair of passages 14a and 14b into which both ends of the strap 4 can be individually inserted. In the passages 14a and 14b, when the strap 4 is moved from the end in the direction to be inserted into the passages 14a and 14b, the strap 4 is not engaged with the teeth 11 and is moved in the direction in which the strap 4 is pulled out from the passages 14a and 14b of the head 5. Claws 15 a and 15 b that mesh with the teeth 11 are arranged. The specific shape of the teeth 11 and the claws 15a and 15b and the state where the teeth 11 and the claws 15a and 15b mesh with each other are the shape of the tooth 11 and the claws 13 shown in FIG. 2 and the state where the teeth 11 and the claws 13 mesh with each other. It is the same.

  FIG. 6 shows a state in which the binding object 51 is bound by combining the strap 4 and the head 5. As shown in FIG. 6, the strap 4 is deformed so as to wind the binding object 51, and both ends of the strap 4 are individually inserted into the passages 14a and 14b to connect the teeth 11 and the claws 15a and 15b. By engaging, the object 51 can be bound without the strap 4 retreating from the position where the teeth 11 and the claws 15a and 15b are engaged (without the strap 4 falling off from the head 5).

  In the binding band kit of the present invention, at least one selected from the strap 4 and the head 5 may be made of the above-described resin composition (A). In addition, since both the strap 4 and the head 5 are made of the resin composition (A), like the integral binding band 1 of the present invention, both the strap and the head are transparent and have a high-strength separation binding band. can do.

  The strap 4 and the head 5 constituting the binding band kit of the present invention can be distributed independently as a binding band strap and a binding band head, respectively.

  The structure of the binding band (binding band kit) of the present invention including the integral type and the separation type, for example, the structure of the strap and the head, is not limited to the examples shown in FIGS. You may have the same structure.

  The binding band and the binding band kit of the present invention can be formed by a known molding method such as an injection molding method or an extrusion molding method.

  Hereinafter, the present invention will be described in more detail with reference to examples. The present invention is not limited to the following examples.

(Example 1)
As the polyamide-based resin composition (A), Rilsan Clear (hereinafter referred to as A-1) supplied from Arkema, which is an amorphous polyamide composition, is used, and one having the shape shown in FIG. Body tie band 1 (total length L = 100 mm, strap width W = 2.5 mm, strap thickness D = 2 mm, and a label or the like can be applied between the portion of the strap 2 where the teeth 11 are provided and the head 3 When the formation of the flat plate portion 6 was attempted, the above-described binding band could be formed without any problem. No release agent was used.

  The amorphous polyamide composition A-1 used was an amorphous polyamide obtained by condensation of a diamine having the structure represented by the above formula (1) and a dicarboxylic acid containing 50% by mole or more of tetradecandioic acid ( B).

  The obtained binding band (sample 1) is transparent as shown in FIG. 8, and the characters below it can be clearly read through the binding band 1 not only at the flat plate portion 6 but also at the head 3 portion. It was.

  Separately from this, for comparison, polyamide 66 (made by DuPont, trade name Zytel, grade for injection molding: hereinafter referred to as C-1), which has been conventionally used for a binding band, was subjected to injection molding and the above. When an attempt was made to form a similar integral binding band, the above binding band could be formed without any problem. However, the obtained binding band (Sample 2) was pale white and opaque.

  The results of measuring the dynamic viscoelasticity (dynamic viscoelastic profiles) of A-1 and C-1 used for forming the binding band based on the provisions of JIS K7198 are shown in FIGS. Shown in The dynamic viscoelasticity was measured using a dynamic viscoelasticity measuring apparatus (DVA-220) manufactured by IT Measurement Control Co., Ltd., at a temperature rising rate of 6 ° C./min and a measurement frequency of 10 Hz. The dynamic viscoelasticity measuring method for the resin composition is the same as in Example 2.

As shown in FIG. 9, the storage elastic modulus (E ′) in the temperature range of 30 to 100 ° C. of the amorphous polyamide composition A-1 is in the range of 9 × 10 ⁸ to 2 × 10 ⁹ Pa, that is, 1 × 10. ^{It was in} the range of ^{8 to} 5 × 10 ⁹ Pa, and the composition had a peak in loss elastic modulus (E ″) near 132 ° C.

On the other hand, as shown in FIG. 10, the storage elastic modulus (E ′) of polyamide 66 (C-1) in the temperature range of 30 to 100 ° C. is in the range of 4 × 10 ⁸ to 2 × 10 ⁹ Pa, that is, 1 × 10. Although in the range of ^{8 to} 5 × 10 ⁹ Pa, the polyamide did not have a peak of loss elastic modulus (E ″) in a temperature range of 90 ° C. or higher. Note that “tan θ” shown in FIGS. 9 and 10 is generally called “loss tangent” and indicates the ratio of the loss elastic modulus to the storage elastic modulus.

  Next, the loop strength was evaluated for both Sample 1 and Sample 2 obtained as described above. The loop strength is one of indices indicating the strength of the binding band in a state where the binding object is bound. In this example, the loop strength of the sample was evaluated based on the definition of SAE AS23190. The evaluation was performed with a tensile speed of 25 mm / min and a mandrel used of 10 mm.

  As a result of the evaluation, the loop strength of sample 1 was 180 N, the loop strength of sample 2 was 118 N, and sample 1 was stronger than sample 2. That is, a transparent binding band having higher strength than the conventional binding band made of an amide resin was realized. Note that the value of “180 N”, which is the loop strength of Sample 1, is not realized unless the conventional binding band made of polyamide 66 is a binding band having a larger size (total length 150 mm, strap width 3.5 mm). Value.

(Example 2)
As the polyamide-based resin composition, A-1 and C-1 used in Example 1, and supplied by Arkema, Inc .: Rilsan fine crystal grade (hereinafter referred to as A-2), supplied by Arkema, Inc .: Pebax (Shore hardness 63 , Hereinafter referred to as A-3), supplied by Arkema, Inc .: Pebax (Shore hardness 55, hereinafter referred to as A-4), and EMS Systemer S400 were mixed at the mixing ratio shown in Table 1 below. Then, an attempt was made to form an integral binding band 1 (total length L = 840 mm, strap width W = 6 mm, strap thickness D = 2 mm) having the shape shown in FIG. 1 by injection molding. In addition, A-2 is a polyamide having transparency which contains polyamide 11 which is a semi-crystalline polyamide as a main component (concentration is 50 mol% or more), and further contains an amorphous polyamide and a polyetheramide block copolymer. System resin composition. A-3 and A-4 are polyetheramide compositions containing a polyetheramide block copolymer as a main component. Systemer S400 manufactured by EMS is a polyamide-based alloy material having a structure in which polyamide 66 is a main component and polypropylene is alloyed.

The measurement results of the dynamic viscoelasticity of each resin composition sample shown in Table 1 are shown in Tables 2 to 3 below. In addition, as for the dynamic viscoelasticity of each resin composition shown in Table 2-Table 3, the said E 'is 1x10 < ⁸ > over the said temperature range about the storage elastic modulus (E') in a 30-100 degreeC temperature range. The case where it was in the range of 5 × 10 ⁹ Pa was designated as “◯”, and the case where it was not present was designated as “x”. Regarding the storage elastic modulus (E ′) in the temperature range of 70 to 100 ° C., the case where the E ′ is 9 × 10 ⁸ Pa or less over the above temperature range is defined as “◯”, and at least at some temperature in the above temperature range. The case where it exceeded 9 × 10 ⁸ Pa was defined as “x”. In addition, regarding the peak of the loss modulus (E ″), the case where the peak temperature was 90 ° C. or higher was “◯”, and the case where it did not was “X”. As an example, the dynamic viscoelastic profiles of Samples 6, 7, 16 and 17 are shown in FIGS.

  Tables 2 to 3 also show the results of the binding band molding test in each resin composition sample, and the binding band obtained after the test (the resin composition sample that passed the molding test if the binding band could not be formed). ) And the evaluation results of the loop strength of the obtained binding band for the sample in which the binding band was formed.

  The evaluation of the molding test is “◎” when the binding band can be formed without any problem, “○” when the binding band can be formed although there are some small scratches, etc., difficult to release from the mold. The case where the binding band could not be formed because the resin composition did not spread sufficiently inside the mold at the time of molding was defined as “x”.

  In the evaluation of the transparency, in the portion of the strap 2 where the teeth 11 are provided, “○” indicates that the text of the newspaper text can be clearly read through the strap, and “X” indicates that the character is difficult to read such as blurring. . About the sample which could not form a binding band, the same evaluation was performed in the part which has the same thickness as the said strap. FIG. 15 shows an example of a binding band from which the characters can be clearly read (the resin composition is Sample 6).

As shown in Tables 2 to 3, the storage elastic modulus (E ′) in the temperature range of 30 to 100 ° C. is in the range of 1 × 10 ^{8 to} 5 × 10 ⁹ Pa, and the temperature in the temperature range of 70 to 100 ° C. When a resin composition having a storage elastic modulus (E ′) of resin of 9 × 10 ⁸ Pa or less and a peak of loss elastic modulus (E ″) in a temperature range of 90 ° C. or higher is used, the polyamide 66 It was possible to realize a transparent binding band having higher strength than the binding band (Sample 15).

  Particularly, in the case of a resin composition (samples 4 to 7) in which A-1 and A-2 are mixed at a blending ratio of A-1 / A-2 = 95 to 40% by weight / 5 to 60% by weight. In addition, a transparent binding band having a high loop strength of 570 N or more could be realized.

In Example 1, a transparent and high-strength binding band could be realized using A-1 as the resin composition. However, in Example 2, it was difficult to form a binding band in Sample 3 using the same resin composition. Met. This is presumably because the binding band that was attempted to be formed in Example 2 was longer than the binding band of Example 1 and the degree of molding processing was high. That is, when forming a binding band having a high degree of difficulty in molding, it was found that the storage elastic modulus (E ′) in the temperature range of 70 to 100 ° C. is preferably 9 × 10 ⁸ Pa or less.

  In addition, in the sample 17 which consists of A-2 which is a transparent polyamide resin composition, transparency fell after the molding test.

  A binding band that is transparent and has higher strength than conventional binding bands made of polyamide resin such as nylon can be provided.

(A) is a top view which shows an example of the binding band (integrated binding band) of this invention, (b) is a side view of the binding band shown to (a). FIG. 2 is a cross-sectional view for explaining a state where a strap 2 is inserted into a head 3 in the binding band 1 shown in FIG. 1. It is a fragmentary sectional view which shows typically the state which bound the binding target object 51 by the binding band 1 shown in FIG. It is a top view which shows an example of the strap used for the binding band kit (separation type binding band) of this invention. It is a top view which shows an example of the head used for the binding band kit (separation type binding band) of this invention. FIG. 6 is a partial cross-sectional view schematically showing a state in which a binding object 51 is bound by the head 5 shown in FIG. 4 and the strap 4 shown in FIG. 5. 2 is a top view showing a binding band produced in Example 1. FIG. It is a figure for demonstrating the transparency of the binding band (sample 1) of this invention produced in Example 1. FIG. 2 is a diagram showing a dynamic viscoelastic profile of a resin composition used in Sample 1 of Example 1. FIG. 2 is a diagram showing a dynamic viscoelastic profile of a resin composition used in Sample 2 of Example 1. FIG. It is a figure which shows the dynamic viscoelastic profile of the resin composition (sample 6) used for Example 2. FIG. It is a figure which shows the dynamic viscoelastic profile of the resin composition (sample 7) used for Example 2. FIG. It is a figure which shows the dynamic viscoelastic profile of the resin composition (sample 16) used for Example 2. FIG. It is a figure which shows the dynamic viscoelastic profile of the resin composition (sample 17) used for Example 2. FIG. It is a figure for demonstrating the transparency of the binding band of this invention produced in Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Binding band 2 Strap 3 Head 4 Strap 5 Head 6 Flat plate part 11 Tooth 12 Passage 13 Nail 14 Passage 15 Nail 51 Binding object

Claims (13)

A strap having teeth lined up on the surface, and a head integrated with the strap having a passage through which the strap can be inserted;
A claw is disposed in the passage that does not mesh with the teeth when moving the strap in the direction of insertion into the passage, and meshes with the teeth when moved in the direction of pulling the strap out of the passage,
The strap is deformed into a loop so as to wrap the object to be bound, inserted into the passage, and meshed with the teeth and the claws, so that the strap retracts from the position where the teeth and the claws meshed. A binding band capable of binding the object without performing,
The strap and the head are
About the dynamic viscoelasticity measured based on prescription | regulation of JISK7198, the storage elastic modulus (E ') in the temperature range of 30-100 degreeC exists in the range of 1 * 10 < ⁸ > -5 * 10 < ⁹ > Pa, and 90 degreeC The polyamide resin composition having a peak of loss elastic modulus (E '') in the above temperature range,
A transparent and high-strength binding band. The transparent and high-strength binding band according to claim 1, wherein a storage elastic modulus (E ') of the resin composition in a temperature range of 70 to 100 ° C is 9 x 10 ⁸ Pa or less.   The transparent and high-strength binding band according to claim 1, wherein the resin composition has a peak of loss elastic modulus (E ″) in a temperature range of 100 ° C. or higher.   The transparent and high-strength binding band according to claim 1, wherein the resin composition contains amorphous polyamide.   The amorphous polyamide was obtained by condensation of at least one diamine selected from an aromatic diamine, an arylaliphatic diamine and an alicyclic diamine with a dicarboxylic acid containing 50 mol% or more of tetradecandioic acid. The transparent and high-strength binding band according to claim 4, which is an amorphous polyamide. The transparent and high-strength binding band according to claim 5, wherein the diamine has a structure represented by the following formula (1).
However, in said formula (1), R < ₁ > -R < ₄ > is selected from a hydrogen atom or a C1-C6 alkyl group, and may mutually be same or different,
X represents a single bond or a divalent group selected from the following (a) to (d):
(A) a linear or branched aliphatic chain having 1 to 10 carbon atoms (b) an alicyclic group having 6 to 12 carbon atoms (c) an alicyclic group having 6 to 8 carbon atoms A linear or branched aliphatic chain having 1 to 10 carbon atoms which may be substituted with (d) a linear or branched dialkyl having a cyclohexyl group or a benzyl group having 8 to 12 carbon atoms Group of.   The transparent and high-strength binding band according to claim 4, wherein the resin composition further contains a semicrystalline polyamide.   The transparent and high-strength binding band according to claim 7, wherein the semicrystalline polyamide is polyamide 11 and / or polyamide 12.   The transparent and high-strength binding band according to claim 4, wherein the resin composition further comprises a polyetheramide block copolymer. A strap having teeth arranged on the surface, and a head having a passage into which the strap can be inserted,
A claw is disposed in the passage that does not mesh with the teeth when moving the strap in the direction of insertion into the passage, and meshes with the teeth when moved in the direction of pulling the strap out of the passage,
The strap is deformed so as to wrap the object to be bound, and each end of each of the straps is inserted into the passage and meshed with the teeth and the claws, so that the teeth and the claws are engaged with each other. A binding band kit capable of binding the object without retracting the strap,
At least one selected from the strap and the head is
About the dynamic viscoelasticity measured based on prescription | regulation of JISK7198, the storage elastic modulus (E ') in the temperature range of 30-100 degreeC exists in the range of 1 * 10 < ⁸ > -5 * 10 < ⁹ > Pa, and 90 degreeC The polyamide resin composition having a peak of loss elastic modulus (E '') in the above temperature range,
Cable tie kit.   The binding band kit according to claim 10, wherein the strap and the head are made of the resin composition. Used as a binding band in combination with a strap with teeth arranged on the surface,
A passage through which the strap can be inserted; and when the strap is moved in a direction to insert the strap into the passage, the teeth do not mesh with the teeth, and when the strap is moved in a direction to be pulled out from the passage, the teeth Nail that is meshed with,
About the dynamic viscoelasticity measured based on prescription | regulation of JISK7198, the storage elastic modulus (E ') in the temperature range of 30-100 degreeC exists in the range of 1 * 10 < ⁸ > -5 * 10 < ⁹ > Pa, and 90 degreeC The polyamide resin composition having a peak of loss elastic modulus (E '') in the above temperature range,
Cable tie head. A strap with teeth arranged on the surface,
A passage through which the strap can be inserted; and when the strap is moved in a direction to insert the strap into the passage, the teeth do not mesh with the teeth, and when the strap is moved in a direction to be pulled out from the passage, the teeth Used as a binding band in combination with the head where the claws are arranged,
About the dynamic viscoelasticity measured based on prescription | regulation of JISK7198, the storage elastic modulus (E ') in the temperature range of 30-100 degreeC exists in the range of 1 * 10 < ⁸ > -5 * 10 < ⁹ > Pa, and 90 degreeC The polyamide resin composition having a peak of loss elastic modulus (E '') in the above temperature range,
Cable tie strap.