阅读说明：本技术 一种弹性包覆线 (A kind of elastomeric overmold line ) 是由 余小乐 王彪 张玉梅 魏红英 于 2018-05-24 设计创作，主要内容包括：本发明提供了一种弹性包覆线,包括：皮层材料与芯线,所述皮层材料包覆在芯线外,其中,所述皮层材料的至少部分区域晶相与非晶相发生相分离。本发明弹性包覆线,皮层材料晶相与非晶相发送相分离,实现了皮层径向收缩、与芯线轴向收缩(即径向膨胀)相结合,皮层与芯线紧密结合,从而提高了强度、抗弯折性、耐刮耐磨性以及弹性恢复率,拉伸、弯曲和压缩回弹率超过99％；拉伸、弯折和挤压时,芯线与皮层不易剥离。(The present invention provides a kind of elastomeric overmold lines, comprising: cortical material and core wire, the cortical material are coated on outside core wire, wherein at least partly region crystal phase of the cortical material is mutually separated with amorphous phase generation.Elastomeric overmold line of the present invention, cortical material crystal phase is mutually separated with amorphous phase transmission, it realizes cortex radial contraction, combined with core wire axial shrinkage (being radially expanded), cortex is combined closely with core wire, to improve intensity, buckle resistance, scratch resistance wearability and elastic restoration ratio, stretch, bending and compression rebound rate are more than 99%；When stretching, bend and squeezing, core wire is not easily stripped with cortex.)

1. a kind of elastomeric overmold line characterized by comprising cortical material and core wire, the cortical material are coated on outside core wire, Wherein, at least partly region crystal phase of the cortical material is mutually separated with amorphous phase generation.

2. elastomeric overmold line according to claim 1, which is characterized in that the partial region is at least 40% region.

3. elastomeric overmold line according to claim 1, which is characterized in that the cortical material is coated on core wire by elastic force Surface.

4. elastomeric overmold line according to claim 1, which is characterized in that the core wire intensity is >=0.5cN/dtex.

5. elastomeric overmold line according to claim 1, which is characterized in that 200 DEG C of cortical material melting temperature <.

6. elastomeric overmold line according to claim 1, which is characterized in that cortical material includes the first cortical material and second Cortical material, in which: the first cortical material melting temperature T1 meets: 120 < T1 < 200 DEG C, second cortical material are molten Melting temperature T2 is 40-120 DEG C.

7. elastomeric overmold line according to claim 6, which is characterized in that the first cortical material and the second cortical material are mixed Object is closed, and/or: different blocks of first cortical material from the second cortical material as block copolymer.

8. elastomeric overmold line according to claim 1, which is characterized in that the cortical material is with a thickness of 0.01-0.1mm.

9. elastomeric overmold line according to claim 1, which is characterized in that the cortical material is thermoplastic elastomer.

10. elastomeric overmold line according to claim 1, which is characterized in that the elastomeric overmold line is using the side being coextruded Method obtains, and the method for the coextrusion includes:

Cortical material melting, is squeezed out together with core wire by coating machine, and cortical material is coated on core wire surface, forms cladding Line；

Be less than or equal to cortical material melting temperature at a temperature of, cortical material is set in core wire surface, in process of setting, to packet It covers line and applies tensile stress, under tension and temperature collective effect, cortical material, which is crystallized, to be occurred simultaneously with mutually separating；The phase point From the separation for referring to crystalline region and amorphous area；

It is cooled and shaped.

Technical field

The present invention relates to a kind of fiber more particularly to a kind of elastomeric overmold lines.

Background technique

The long filament or yarn of higher-strength are the preferred materials of many shoes, outdoor goods, knapsack etc.；Usual long filament or There is easily hook silk, not wear-resisting, non-watertight etc. in use and lack in the multifilament that yarn is made of the tiny monofilament of many roots Point.Current solution is usually impregnation, coating or coating processing to be carried out to textile, but after processing, textile is distinctive Interfibrous gap is capped, sacrifices gas permeability, flexibility, gloss, lines sense of textile etc., and between coating and fabric Often because difference in shrinkage influences its usability, stickiness etc..If multifilament is changed into the monofilament of same thickness, although can solve The problem of hooking silk, but monofilament has Boardy Feeling, poor, not resistant to bending, the non-water-tight defect of comfort.

Have to solve the above problems, carrying out the method that external sheath waterproof layer prepares covering thread as core wire using high-strength multifilament Production and application, can not only retain the soft advantage of original multifilament in this way, but can overcome its easily hook silk, it is not wear-resisting, do not prevent The shortcomings that water.Currently, the raw material that cladding waterproof layer uses also has patented technology using PE, PP etc., these materials based on PVC Since resilience is poor, lead to that covering thread is resistant to bending, clad is loosely easily peeled off in conjunction with core wire, especially PVC poor processability needs a large amount of processing aid, such as plasticizer.

Summary of the invention

In view of the defect of above-mentioned art methods, it is high, resistant to bending, high-intensitive simultaneous that the present invention provides a kind of elastic recovery rate Has the elastomeric overmold line of the characteristics such as waterproof.

The present invention provides elastomeric overmold line, comprising: and cortical material and core wire, the cortical material are coated on outside core wire, In, at least partly region crystal phase of the cortical material is mutually separated with amorphous phase generation.

At least partly region crystal phase of the present invention is mutually separated with amorphous phase generation, is preferably referred to along its length, It is at least partly alternately present before and after amorphous phase and at least partly crystal phase, and/or at least partly crystalline phase distribution is in different layers.

In an advantageous embodiment, in cortical material of the present invention, the partial region is at least 40% region, It is more selected as at least 60% region, is more selected as at least 80% region.

In an advantageous embodiment, it can be bonding between the cortical material and core wire or do not bond.

In an advantageous embodiment, the cortical material is coated on core wire surface by elastic force.

In an advantageous embodiment, 200 DEG C of cortical material melting temperature <, more preferably≤180 DEG C, more preferably institute Stating cortical material melting temperature is to be at least 50 DEG C, more preferably 80-180 DEG C, more preferably 100-150 DEG C.

In an advantageous embodiment, cortical material includes the first cortical material and the second cortical material, in which: described the One cortical material melting temperature T1 meets: 120 < T1 < 200 DEG C, more preferably 140-180 DEG C；The second cortical material melting Temperature T2 is preferably 40-120 DEG C, more preferably 50-100 DEG C, more preferably 50-80 DEG C.

Wherein, the first cortical material and the second cortical material can be mixture, and/or: it is also possible to block copolymer, For example, different blocks of first cortical material from the second cortical material as block copolymer.

In an advantageous embodiment, core wire melting temperature >=200 DEG C, more preferably >=220 DEG C, more preferably >=250 ℃。

In an advantageous embodiment, the core wire intensity preferably >=0.5cN/dtex, more preferably >=1cN/dtex, More preferably >=1.5cN/dtex, more preferably >=2cN/dtex, more preferably >=2.5cN/dtex, more preferably >=3cN/ Dtex, more preferably >=3.5cN/dtex, more preferably >=4cN/dtex, more preferably >=4.5cN/dtex.

In an advantageous embodiment, the cortical material is with a thickness of 0.01-0.8mm, more preferably 0.05-0.8mm, more It is selected as 0.1-0.5mm.

In an advantageous embodiment, the cortical material is thermoplastic elastomer (TPE).

It is highly preferred that the thermoplastic elastomer (TPE), can be addition polymer or condensation polymer, the addition can be homopolymerization Object or copolymer, the copolymer can be block copolymer, alternate copolymer, random copolymer, one in graft copolymer Kind is several.

It is highly preferred that the thermoplastic elastomer can be phenylethylene thermoplastic elastomer, diene class thermoplastic elastomer, poly- ammonia It is esters thermoplastic elastomer, olefin type thermoplastic elastomer, polyurethanes thermoplastic elastomer, polyesters thermoplastic elastomer, polyamide-based One or more of thermoplastic elastomer, organic siliconresin.It is highly preferred that the thermoplastic elastomer can be polyurethane thermal-plastic's bullet The mixing of one or more of property body (TPU), polyether ester thermoplastic elastomer (TPEE) or polyetheramides thermoplastic elastomer.

Preferably, the thermoplastic elastic can be not higher than 1% pigments or dyes containing mass ratio.

Preferably, the thermoplastic elastic can be not higher than 10% color master-batch containing mass ratio.

Preferably, the thermoplastic elastomer can contain auxiliary agent, and the auxiliary agent can be including but not limited to: enhancing One or more of agent, fire retardant, preservative, lubricant, age resister.It is highly preferred that the auxiliary agent does not include plasticizer.

It is highly preferred that auxiliary agent mass ratio in the thermoplastic elastic is not higher than 5%, more preferably not above 3%, more preferably not above 1%.

Preferably, the core wire can be including but not limited to: plant fiber, animal origin, regenerated fiber, synthesis are fine Any one or a few in dimension.

Wherein, the plant fiber can be one or more of flax fiber, bamboo fibre, cotton fiber.

Wherein, the animal origin can be one or more of wool, camel hair, the rabbit hair, silk fiber.

Wherein, the synthetic fibers can be one of polyester, polyamide, polyimides, carbon fiber, acrylic fibers, polypropylene fibre Or it is several.

It includes synthetic fibers that core wire of the present invention, which is preferably at least, can specifically include PET, PBT, PA6, PA66 industry The combination of one or more of long filament.

Preferably, the core wire is also possible to coloured.

In an advantageous embodiment, the core wire is long filament, and preferably multifilament.

In an advantageous embodiment, the silk that the long filament can be twisting or not twist.

Wherein, the long filament continuous length is preferably at least 1m, more preferably at least 10m, more preferably at least 100m, More preferably at least 1000m.

In an advantageous embodiment, the elastomeric overmold line is obtained using the method for coextrusion, the side of the coextrusion Method includes:

Cortical material melting, is squeezed out together with core wire by coating machine, and cortical material is coated on core wire surface, forms packet Cover line；

Be less than or equal to cortical material melting temperature at a temperature of, cortical material is set in core wire surface, in process of setting, Tensile stress is applied to covering thread, under tension and temperature collective effect, cortical material, which is crystallized, to be occurred simultaneously with mutually separating；It is described Mutually separation refers to the separation of crystalline region and amorphous area；

It is cooled and shaped.

In an advantageous embodiment, the temperature appointing between cortical material glass transition temperature and melting temperature Meaning temperature value or temperature range, it is preferable that do not include cortical material glass transition temperature, cortical material melting temperature.

It is highly preferred that the temperature is 50 DEG C under cortical material melting temperature to core wire melting temperature or less.More preferably Temperature is heated under cortical material melting temperature 30 DEG C to below core wire melting temperature by ground.

In an advantageous embodiment, cortical material melt viscosity under extrusion temperature is at least 500Pas, more Preferably 800~2000Pas, preferably 1000-1500Pas.

In an advantageous embodiment, the tensile stress that applies is to be greater than extruded velocity by stretching the speed of covering thread To realize.It is highly preferred that the speed for stretching covering thread is at least 1.01 times of extruded velocity, more preferably 1.01-1.5 times, more Preferably 1.05-1.2 times, such as 1.1 times.

In an advantageous embodiment, the speed for stretching covering thread is 1-1000m/min, preferably 2-900m/ Min, more preferably 5-800m/min.

In above content of the present invention, given numberical range may each be finger chosen out of this it is one or more Fixed numbers or numerical intervals.

The method that the present invention produces elastomeric overmold line, has the advantages that

1) pass through heat setting process, realize cortex radial contraction, combined with core wire axial shrinkage (being radially expanded), Cortex is combined closely with core wire, to improve intensity, buckle resistance, scratch resistance wearability and elastic restoration ratio, is stretched, bending It is more than 99% with compression rebound rate；When stretching, bend and squeezing, core wire is not easily stripped with cortex；

2) the application uses melt-processed, does not use solvent and plasticizer, and product safety is nontoxic；

3) core wire provides good stretching using in the case where high-tenacity multifilament yarn, having soft, tough special efficacy for covering thread Intensity and buckling strength；

4) cortex and core wire are thermoplastic material, can pass through recycling and reusing.

Specific embodiment

Elastomeric overmold line produced by the invention, is made of cortex and core wire, and cortex is thermoplastic elastomer (TPE), such as be can be The mixing of one or more of polyurethane (TPU), polyether ester (TPEE) or polyetheramides.The core wire is long filament, such as can To be the combination of one or more of polyester, polyamide 6, polyamide 66 industrial filament.