CN1391447A - Shoe linings for the shoe industry - Google Patents

Abstract

The invention relates to a shoe lining for the shoe industry, wherein the material consists of a material having a mass of 80 to 170g/m²The continuous tearing strength non-woven fabric with the unit area weight and the longitudinal direction and the transverse direction both greater than 7N is composed of multi-component continuous monofilaments with the titer of 1.5-5 dtex, which are hot-melt spun, pneumatically stretched and immediately arranged into a fiber net, and at least 80% of the multi-component continuous monofilaments are split and solidified into micro-continuous monofilaments with the titer of 0.1-0.8 dtex after a pre-solidification treatment.

Description

Shoe linings for the shoe industry

technical field

The present invention relates to a shoe lining for the shoe industry and a method of manufacturing the shoe lining.

Background technique

In the footwear industry some wear-resistant materials are used for lining the inner part of the shoe, so-called shoe linings. On the one hand, these materials should help to transport the moisture formed by foot sweat outwards, on the other hand, they should be able to distribute the forces generated by the foot's spreading movement on the shoe leather over a large area, so as to avoid forming Wrinkles and the associated rapid wear and tear.

For this purpose, thermally bonded and calendered polyamide nonwovens, raised or carded knitted fabrics, raised fabrics, coagulated with polyurethane Material-based synthetic leather or natural raw material fission leather.

Contents of the invention

The task of the present invention is to provide a shoe liner for the shoe industry, which has a tear resistance greater than 7N in the length and width directions at a weight per unit area of 80-170g/ ^m2 . and continuous tear strength.

A further object of the invention is to provide a method in particular for producing such a shoe lining.

According to the invention, this task is solved by such a kind of shoe inner liner, and it has a weight per unit area of 80～170g/m ² and in length and width direction all greater than 7N continuous tear resistance, wherein The shoe lining is composed of multi-component continuous monofilaments with a fineness of 1.5-5 dtex (decentex) that are hot-melt-spun, pneumatically stretched and directly arranged into a fiber web, and the multi-component continuous monofilaments are passed through a After pre-curing, at least 80% of them are split and solidified into micro-continuous monofilaments with a denier of 0.1-0.8 dtex. The shoe inner liner has high tensile resistance and abrasion resistance with a small weight per unit area. For the shoe inner lining of the present invention, because it is a continuous unit, there is no need for welt and no fiber loosening, thereby also avoiding the thickening of the seam and the pressure part that may be generated thereby.

The shoe inner liner is preferably such an inner liner, wherein the non-woven fabric is composed of hot-melt-spun, pneumatically stretched and directly arranged into a fiber web with multi-component continuous monofilaments with a fineness of 2 to 3 dtex, and the The multicomponent continuous monofilaments, possibly after a precure, at least 80% of them are split and solidified into microcontinuous monofilaments with a titer of 0.1 to 0.5 dtex. The shoe liner has an isotropic monofilament distribution in its fiber web. Therefore, it is not necessary to take into account the cutting direction of the machine when cutting the shoe lining.

The shoe liner is preferably a liner in which the multicomponent continuous monofilament is a bilayer of two incompatible polymers, especially a polyester (PES) and a polyamide (PA). Constituent continuous monofilament. The multicomponent continuous monofilament thus has a very good resistance to breakage and a very favorable ratio of strength to weight per unit area.

The shoe liner is preferably a liner in which the multicomponent continuous monofilament has a cross-section of an orange or also called "pie" multi-segment structure, wherein the sectors alternately contain two One of the incompatible polymers. In addition to this orange multi-sector configuration of multicomponent continuous monofilaments, a "side-by-side" (S/S) or fan-shaped configuration of incompatible polymers in multicomponent continuous monofilaments is also possible. mode is preferably used to manufacture curly monofilaments. This fan-shaped arrangement of incompatible polymers in multicomponent continuous monofilaments proved to be very well splittable. The shoe liner has a very favorable ratio of weight per unit area to insulating properties, so that a soft and warm shoe liner can be produced, in particular through subsequent processing steps such as raising.

The shoe innerliner is preferably an innerliner in which the nonwoven fabric formed from multicomponent continuous monofilaments is pre-calendered for pre-curing. The material thus has a very good thickness uniformity.

In addition, a material with a textile appearance and a wear-resistant surface is preferably used as the shoe inner lining, which is held on a structured and/or open-mesh mesh substrate by high-pressure water jetting.

Particularly preferred is also a shoe lining in which at least one of the incompatible polymers constituted as multicomponent continuous monofilaments contains an additive, such as a pigment, a permanent-acting antistatic agent and/or capable of affecting hydrophilicity. or additives of hydrophobic nature in amounts up to 15% by weight. For this purpose, the shoe lining has a positive influence with respect to its light fastness, tendency towards static charging, transport of perspiration and moisture accumulation. In addition, pigments are added to textiles to help create deep and wearable colours.

Particularly preferred is also a shoe lining in which the multicomponent continuous monofilaments are not curled, since this ensures the hand of the fabric due to good splitting into micro-continuous monofilaments.

The shoe liner is preferably a liner in which one of the two sides is provided with a hot-melt adhesive coating. Such a material is especially suitable for further processing with automated machines.

The steps of the method according to the invention for the manufacture of the shoe lining are: blow spinning multicomponent continuous monofilaments from a melt, pneumatically stretching them and arranging them directly into a web, possibly precalendered or needled The non-woven fabric is solidified by high-pressure water jets and simultaneously split into micro-continuous monofilaments with a fineness of 0.1-0.8 dtex, preferably a fineness of 0.1-0.5 dtex. The strength bearing capacity of the resulting product is very uniform due to a broad isotropic distribution of fibrils in the product. The product is not prone to delamination and has high elastic modulus values and resistance to tearing and continuous tearing. In addition, the shoe inner liner according to the present invention also has good moisture transport properties, which are very beneficial for providing shoe comfort in terms of water vapor transport and drying of wet shoes.

A further advantageous embodiment of the method consists in that the solidification and splitting of the multicomponent continuous filaments is carried out in such a way that the possibly precured nonwoven is impacted at least once per side with a high-pressure water jet. This type of solidification and splitting of the multicomponent continuous filaments results in a very dense nonwoven with a smooth surface.

The final high-pressure water jet treatment is preferably carried out on a screen substrate with a mesh width of 5-50 mesh. This further cures the substrate, making it more wear resistant and having a textile appearance.

The impregnated material is preferably also subjected to subsequent treatments such as colouring, tumbling, polishing and/or shrinking. By means of these measures the surface properties and the hand feel of the resulting material can be further improved.

specific embodiment

A monofilament yarn with a weight per unit area of 110 g/m ² was produced from a PES-PA bicomponent continuous monofilament and was alternately treated on both sides with a water jet at a pressure of up to 280 bar. Here the water jetting is carried out on a total of four processing steps, the fourth step being carried out on a 20-mesh screen substrate. This results in a structured and/or porous surface, and the shoe lining has a textile appearance and a soft feel. After passing through the water jet, the output monofilament is simultaneously split into micro monofilaments with a fineness less than 0.2dtex. The resulting shoe liner is then spray-coloured and can be applied regardless of the orientation of the cutting machine. The shoe lining thus obtained has the strength parameters given in the table below and is very suitable for the given purpose of application. characteristic unit of measurement value weight g/ ^m2 110 Modulus 10%, longitudinal N/5cm 60 Modulus 10%, transverse N/5cm 40 Continuous tear strength, machine direction N 8 Continuous tear strength, transverse direction N 8 Martindale (Wear at 12kPa) Dry value after 51200 revolutions Wet value after 12800 revolutions well

Claims (13)

1. footwear liner that is used for shoe industry has 80～170g/m by a kind of ²Weight per unit area and vertical and horizontal are all formed greater than the nonwoven fabric of the anti-successive tear strength of 7N, wherein this nonwoven fabric by hot melt spray silk, pneumatic stretching and be arranged in immediately a silk screen, fiber number is that the multicomponent continuous monofilament of 1.5～5dtex is formed, and this multicomponent continuous monofilament wherein at least 80% is divided and is solidified into the little continuous monofilament with 0.1～0.8dtex fiber number after precuring processing.

2. footwear liner as claimed in claim 1, it is characterized in that: this nonwoven fabric by hot melt spray silk, pneumatic stretching and be arranged in immediately a silk screen, fiber number is that the multicomponent continuous monofilament of 2～3dtex is formed, and this multicomponent continuous monofilament wherein at least 80% is divided and is solidified into the little continuous monofilament with 0.1～0.5dtex fiber number after precuring processing.

3. footwear liner as claimed in claim 1 or 2 is characterized in that: this multicomponent continuous monofilament is a kind of two composition continuous monofilaments of being made up of two kinds of incompatible polymers, especially a kind of polyester and a kind of polyamide.

4. as the described footwear liner of one of claim 1～3, it is characterized in that: this multicomponent continuous monofilament has the cross section of the many sector structures of orange formula, wherein a kind of among these fan-shaped alternately each self-contained neither compatible polymerics and/or have the structure of a kind of " shoulder to shoulder ".

5. as the described footwear liner of one of claim 1～4, it is characterized in that: the nonwoven fabric that is formed by the multicomponent continuous monofilament is carried out precuring by pre-calendering.

6. as the described footwear liner of one of claim 1～5, it is characterized in that: this footwear liner has a kind of textile appearance.

7. as the described footwear liner of one of claim 1～6, it is characterized in that: constitute at least a in the incompatible polymer of multicomponent continuous monofilament and comprise a kind of additive, the antistatic additive of pigment, permanent effect and/or can influence the additive of water-wet behavior for example, its additive capacity is 15% weight ratio the most nearly.

8. as the described footwear liner of one of claim 1～7, it is characterized in that: this multicomponent continuous monofilament is not crimp.

9. as the described footwear liner of one of claim 1～8, it is characterized in that: the one side in the footwear liner two sides is provided with a kind of hot-melt adhesive overlay.

10. method that is used for making as the described footwear liner of one of claim 1～9, it is characterized in that: the multicomponent continuous monofilament is spun in spray from liquation, it is carried out pneumatic stretching and directly is arranged in a fiber web, carry out precuring through pre-calendering or acupuncture under the possible situation, and this nonwoven fabric solidifies with high pressure liquid jet and split into fiber number simultaneously is little continuous monofilament of 0.1～0.8dtex and floods with a polymer subsequently.

11. method as claimed in claim 10 is characterized in that: the curing of multicomponent continuous monofilament and division are carried out like this: under the possible situation by precuring each face of nonwoven fabric at least once impacted with high-pressure water jet.

12. as claim 10 or 11 described methods, it is characterized in that: it is to carry out in 5～50 purpose screen cloth substrates that last high-pressure water jet is handled at a mesh width.

13. as the described method of one of claim 10～12, it is characterized in that: carry out such as subsequent treatment such as colouring, tumbling, polishing and/or preshrunks.